JP5238325B2 - Hardware for connection - Google Patents

Description

  The present invention provides a connecting hardware that can effectively cope with the external force of pulling out a pillar added to a pillar in a building such as an earthquake or a typhoon. As a means to reinforce the tensile strength of pillars and to retrofit existing structures, especially as a means of reinforcing the tensile strength of pillars in wooden buildings, this reinforcement can be easily performed and surely achieved. It is related with provision of the metal fitting for connection which can bring about the reinforcement effect of.

  When reinforcing the tensile strength of a column in a normal earthquake or typhoon, for example, the column base on the both sides of the newly added load-bearing wall is reinforced with an L-shaped cross section so that the column base and base are not pulled out due to earthquake motion, etc. I was trying to connect with.

  However, when the tensile strength of the column is required at the time of an earthquake exceeding 10 kN, it is necessary to directly connect the column to the concrete foundation.

  In addition, when reinforcing reinforcement is attached to an existing concrete foundation to increase the tensile strength of the column, the reinforcement foundation is attached to the concrete foundation with a lag screw, or anchor bolts are driven into the concrete foundation. It was necessary to drive in and attach the reinforcement hardware, and there was a problem that cracking or chipping occurred in the concrete foundation portion when the lag screw was screwed in or the anchor bolt was driven.

  In addition, when a lag screw is screwed in to attach a seismic reinforcement bracket to a concrete foundation with a reinforcing bar, or a hole for a driven anchor bolt is drilled, the embedded reinforcing bar is used for screwing or drilling a hole. There were problems such as hindering the installation or damaging the reinforcing bars by screwing or drilling holes.

  From this point, as a means to reinforce the column base in the renovation work, a U-shaped column-side joining member that is bonded to the three sides of the column so as to surround the column having a rectangular cross section, and the column via the base A pair of foundation-side joining members bonded to the side surface of the concrete foundation that supports the base member and a connecting member, and the non-adhesive side ends of the pair of foundation-side joining members are connected to the column-side joining member 2 via the connecting member. Bolt holes are respectively formed in the column side mounting plate constituting the connecting member and the base side mounting plate constituting the base side joining member, and the bolts are inserted through the bolt holes. There has been proposed a column base fixture that can be screwed together (for example, Patent Document 1).

Japanese Patent Laid-Open No. 2006-125064

  However, using the connecting hardware bonded to the concrete foundation, pull the pillar to the base with the hole-down hardware provided on the column side, or use the connecting hardware bonded to the concrete foundation to fix the foundation with the fixing screws. There was no means to fix it firmly on the concrete foundation.

  This invention uses a solid and smooth surface in a concrete foundation to bond the plate of the connecting hardware, and firmly connects the column to the concrete foundation via the foundation with a standardized hole-down hardware. The foundation can be firmly fixed to the concrete foundation using fixed screws such as lag screws, and the connection and fixing can be performed relatively easily and within the minimum construction space. The purpose is to provide the connected hardware.

In order to solve the above problems, the first invention is:
A plate having an adhesive surface that is secured to a concrete foundation;
An arm portion which is bent from the leg portion and a leg portion, for connecting with a bent metal forming the credit L-shape, which is fastened to respect the lower side of the leg portion upper side of the plate Hardware,
The plate of the connecting hardware is provided with four upper screw holes at equal intervals on the same horizontal line on the upper side, and lower screws respectively spaced apart from the upper screw holes at the same interval. With holes,
In the leg plate portion provided at the lower end of the leg portion, the bending metal fitting includes two adjacent upper screw holes and a lower screw hole below each of the upper screw holes in the plate. It has four holes that communicate with the
The leg plate part of the bent metal fitting is connected to two upper screw holes adjacent to each other among the eight screw holes provided in the plate and a lower screw hole below each of the upper screw holes. The four holes are connected to each other, and screws are screwed into the screw holes from the holes of the leg plate portion to fix the plate to the bent metal fittings,
When the plate to which the bent metal fitting is fixed is bonded to the concrete foundation,
The leg portion of the bent metal fitting is erected along the side of the foundation on the concrete foundation, and the arm portion protrudes on the foundation;
A bolt with a seat inserted from below the hole formed in the arm portion is fastened to a hole-down hardware provided on the column so that the concrete foundation and the column can be connected via the foundation. It is a metal fitting for connection characterized by being.

  With the connecting hardware configured in this way, the plate in the connecting hardware can be easily fixed to the concrete foundation surface having a solid and smooth surface, and it can be firmly fixed. It is possible to securely connect the pillar to the concrete foundation via the base together with the hole-down hardware that is used, and by using it together with the standardized hole-down hardware, the intended tensile strength can be reinforced. Can be easily brought to you.

  Further, in such a connecting hardware, the arm portion of the bending metal fitting in the connecting hardware bonded to the surface of the concrete foundation can be provided in close contact with the surface of the pillar perpendicular to the surface of the concrete foundation. Between the hole-down hardware provided on the contacted column surface, the column can be reliably connected to the concrete foundation in an attracted state.

  Further, in such a connection hardware, when there is no peripheral side surface of the concrete foundation directly below the pillar to be reinforced, for example, the concrete foundation is provided in a T shape or a cross shape, and the pillar is provided on the corner side of the concrete foundation. Even when it is necessary to reinforce the tensile strength of the concrete, the connecting hardware can be easily and reliably bonded to the concrete foundation surface, and the connecting hardware bonded to the concrete foundation surface is used to stand on the foundation. The installed pillar can be securely connected to the concrete foundation, and the pillar having the desired tensile strength can be reinforced.

  In addition, in such a connecting hardware, a bending bracket can be provided at a position where it can be conveniently connected to the hole-down hardware provided on the pillar, so that the seated bolt inserted from the connecting hardware can be securely tightened to the hole-down hardware. can do.

In order to solve the above-mentioned problem, the second invention
A plate having an adhesive surface that is secured to a concrete foundation;
An arm portion which is bent from the leg portion and a leg portion, for connecting with a bent metal forming the credit L-shape, which is fastened to respect the lower side of the leg portion upper side of the plate Hardware,
The plate of the connecting hardware is provided with four upper screw holes at equal intervals on the same horizontal line on the upper side, and lower screws respectively spaced apart from the upper screw holes at the same interval. With holes,
In the leg plate portion provided at the lower end of the leg portion, the bending metal fitting includes two adjacent upper screw holes and a lower screw hole below each of the upper screw holes in the plate. It has four holes that communicate with the
The leg plate part of the bent metal fitting is connected to two upper screw holes adjacent to each other among the eight screw holes provided in the plate and a lower screw hole below each of the upper screw holes. The four holes are connected to each other, and screws are screwed into the screw holes from the holes of the leg plate portion to fix the plate to the bent metal fittings,
When the plate to which the bent metal fitting is fixed is bonded to the concrete foundation,
The leg portion of the bent metal fitting is erected along the side of the foundation on the concrete foundation, and the arm portion protrudes on the foundation;
The connecting hardware is characterized in that a fixing screw is screwed into the base through a hole formed in the arm portion so that the base and the concrete foundation can be connected.

  In the connecting hardware configured as described above, the plate in the connecting hardware can be easily fixed to the concrete base surface having a robust and smooth surface, and moreover, since it can be firmly fixed, The foundation can be easily fixed firmly to the cockleet foundation with the fixing screw.

  Further, with such a connecting hardware, the base can be firmly fixed to the concrete foundation with a fixing screw such as a lag screw even at the side closest to the standing pillar.

  Further, in such a connecting hardware, by attaching the plates to both sides of the concrete foundation, the base can be provided so as to be sandwiched between the connecting hardware, and the foundation can be securely fixed to the concrete foundation. .

  Further, in the connection hardware according to the above configuration, in the connection hardware in which the plate can fix the two bent metal fittings in a parallel state on the upper side thereof, as necessary, The plate is equipped with one or two bent metal fittings and used in response to various requests.

  In the connecting hardware having the above-described configuration, the bending metal fitting includes a rectangular plate portion along a side of the base and a rectangular plate portion along an upper surface of the base, and at least a bending portion. In the case where the reinforcing side plate portion that protrudes outward from the longitudinal edge on both sides of the plate portion sandwiching the rim is provided, necessary and sufficient strength can be provided to the bent portion of the bent metal fitting.

  Further, in the connection hardware having the above-described configuration, the connection hardware can be easily and reliably applied to a narrower surface of the concrete foundation by making the plate a rectangular plate that is long in the vertical direction. It can be firmly bonded.

  The metal fitting for connection according to the present invention provides the desired tensile strength to the pillar by the hole down hardware and the metal fitting for connection provided on the surface of the concrete foundation and the surface of the column perpendicular to the surface, or the hole down The arm part of the connecting hardware can be positioned directly under the hardware so that the desired tensile strength can be provided to the target column easily and efficiently in a narrow construction space. The base can be stably fixed to the concrete foundation using hardware.

  Hereinafter, a metal fitting A for connecting pillars according to the best mode for carrying out the present invention will be specifically described.

  1 to 17 show a typical connecting hardware A according to the best mode for carrying out the present invention, and pulling of a column G and fixing of a base F using the connecting hardware A. 1 to 8, the bent metal fitting 20 is fixed to the central portion of the upper portion of the plate 10 to form a connecting hardware A, and the connecting hardware A is bonded to the concrete foundation E to form a hole-down hardware B. 9 and 10, the bent metal fitting 20 is moved to the side of the upper part of the plate 10 to form a connecting hardware A, and this is used together with the hole-down hardware B. Further, in FIGS. 11 to 14, two bent metal fittings 20 are provided in parallel on the upper portion of the plate 10 to form a connecting hardware A, and a column with a hole-down hardware B is used. For drawing G FIGS. 15 to 17 show a state in which the metal fitting A is configured by providing the plate 10 with the bent metal fitting 20 and the foundation F is fixed to the concrete foundation E using the metal fitting A. ing.

  The connecting hardware A constituting the first invention shown here includes a plate 10 having an adhesive surface 10a fixed to a concrete foundation E, a leg portion 21 and an arm portion bent from the leg portion 21. 22 and a bent metal fitting 20 having an inverted L shape that is secured to a lower side of the leg portion 21 at a predetermined position in a lateral direction with respect to the upper side of the plate 10. .

  Then, when the metal plate for connection A is bonded to the concrete foundation E, the leg portion 21 of the metal fitting for bending 20 is the Standing along the side of the base F on the concrete foundation E, and the arm portion 22 projecting above the base F, below the hole 23 formed in the arm portion 22 The concrete foundation E and the column G can be connected to each other through the base F by fastening the bolt 40 with a seat inserted through to a hole-down hardware B provided on the column G.

  Here, the concrete foundation E to which the connecting hardware A is fixed may be a foundation in any form as long as it is a concrete foundation E having a rising edge that receives the foundation F, for example, a single foundation, a cloth foundation, etc. Various concrete foundations can be targeted.

  Further, the connecting hardware A used here includes a plate 10 having an adhesive surface 10 a fixed to the concrete foundation E, a leg portion 21, and an arm portion 22 bent from the leg portion 21. A bent metal fitting 20 having an inverted L-shape that is fixed to a lower side of the leg portion 21 at a predetermined position in the lateral direction with respect to the upper side of the plate 10, When the fixed plate 10 is bonded to the concrete foundation E, the leg portion 21 of the bent metal fitting 20 is erected along the side of the base F on the concrete foundation E, and the arm portion 22 As long as it has a structure that protrudes on the base F, it may be made of any material or in any shape.

  Further, the hole-down hardware B used here has the tensile strength required for the pillar G reinforced with the hole-down hardware B together with the connection hardware A, and the target pillar G is pulled out from the base F. As long as it has strength that does not have any strength, it may be made of any material and any shape, and exceeds the tensile strength standard of the Building Standards Act, which is obliged as means for reinforcing the column base in the wooden frame construction method, etc. Those having a tensile strength are used.

  In addition, the bolt 40 with a seat for connecting the hole-down hardware B and the connection hardware A is used for the column G provided with the hole-down hardware B due to vibration during an earthquake or external force in the pulling direction during a typhoon. As long as it has a strength that can effectively prevent the column G from being pulled out, it may be made of any material or any shape.

  In the connecting hardware A configured as described above, the plate 10 in the connecting hardware A can be easily fixed to the surface Ea of the concrete foundation E having a robust and smooth surface, and can be firmly fixed. Therefore, it is possible to connect the pillar G to the concrete foundation E via the base F together with the hole down hardware B provided on the column base, and use it together with the standardized hole down hardware B. Thus, the desired tensile strength can be easily provided to the column G to be reinforced.

  Further, in such a connecting hardware A, the arm portion 22 of the bent metal fitting 20 in the connecting hardware A bonded to the surface Ea of the concrete foundation E is brought into close contact with the surface Ga of the column G perpendicular to the surface Ea of the concrete foundation E. The column G can be reliably connected to the concrete foundation E in a state of being attracted to the hole-down hardware B provided on the column surface Ga in contact with the arm portion 22.

  In addition, in the connection hardware A, when the peripheral side surface Ea of the concrete foundation E does not exist directly below the column G to be reinforced, the concrete foundation E is provided in a T shape or a cross shape, for example, and Even when it is necessary to reinforce the tensile strength of the column G on the corner side of the concrete foundation E, the connecting hardware A can be easily and reliably bonded to the surface Ea of the concrete foundation E. The column G standing on the base F can be reliably connected to the concrete foundation E using the connecting hardware A bonded to the surface Ea of E, and the column G is reinforced so as to have an intended tensile strength. can do.

  Further, in such a connecting hardware A, since the bent metal fitting 20 can be provided at a position where it can be conveniently connected to the hole down hardware B provided in the column G, the seated bolt 40 inserted from the connecting hardware A is provided with the hole down hardware. It can be fastened to B without difficulty.

  Subsequently, the connecting hardware A constituting the second invention configured here is bent from the plate 10 having the adhesive surface 10 a fixed to the concrete foundation E, the leg portion 21, and the leg portion 21. And a bent metal fitting 20 having an inverted L shape that is fixed at a predetermined position in the lateral direction with respect to the upper side of the plate 10. As a configuration.

  And when the said plate 10 which fixed the said bending | flexion metal fitting 20 in this connection metal fitting A was adhere | attached on the said concrete foundation E, the said leg part 21 of this bending | flexion metal fitting 20 is the base F side on the said concrete foundation E. Further, the arm portion 22 is protruded on the base F, and a fixing screw D is screwed into the base F through a hole 23 formed in the arm portion 22. Thus, the foundation F and the concrete foundation E can be connected.

  Here, the concrete foundation E to which the connecting hardware A is fixed may be a foundation in any form as long as it is a concrete foundation E having a rising edge that receives the foundation F, for example, a single foundation, a cloth foundation, etc. Various concrete foundations can be targeted.

  Further, the connecting hardware A used here includes a plate 10 having an adhesive surface 10 a fixed to the concrete foundation E, a leg portion 21, and an arm portion 22 bent from the leg portion 21. The lower portion of the leg portion 21 is provided with a bent metal fitting 20 having an inverted L shape that is fixed to the upper portion of the plate 10 at a predetermined position in the lateral direction. When the plate 10 to which the bent metal fitting 20 is fixed is bonded to the concrete foundation E, the leg portion 21 of the bent metal fitting 20 is erected along the side of the base F on the concrete foundation E, and As long as the arm portion 22 is configured to protrude on the base F, the arm portion 22 may be formed of any material or in any shape.

  In the connecting hardware A configured as described above, the plate 10 in the connecting hardware A can be easily fixed to the surface Ea of the concrete foundation E having a robust and smooth surface, and can be firmly fixed. Therefore, the base F can be easily fixed firmly to the cockleet foundation E with a fixing screw D such as a lag screw.

  In addition, in such a connecting hardware A, when the pillar G is erected on the base F, the base F is lag screwed to the concrete foundation E even at the side position closest to the erected pillar G. It can fix firmly with the fixing screws D, such as.

  Further, in such a connecting hardware A, the plate 10 is bonded to both side faces Ea and Ea of the concrete foundation E so that the base F is sandwiched between the connecting hardware A and A that form a pair from both sides of the base F. The foundation F can be securely fixed to the concrete foundation E with the required holding force.

  Further, in the connection hardware A according to the above-described configuration, in the connection hardware A in which the plate 10 can fix the two bent metal fittings 20 in a parallel state on the upper side thereof, as needed, If necessary, the plate 10 can be provided with one or two bent metal fittings 20 to meet various requirements.

  Further, in the connection hardware A having the above-described configuration, the bent metal fitting 20 includes a rectangular plate portion 21a along the side of the base F, and a rectangular plate portion 22a along the upper surface of the base F. In the connecting hardware A provided with reinforcing side plate portions 21b, 21b, 22b, and 22b projecting outwardly from the longitudinal edges on both sides of the plate portions 21a and 22a sandwiching at least the bent portions, The bent portion of the metal fitting 20 is effectively reinforced by the reinforcing side plate portions 21b and 22b.

  Further, in the connection hardware A having the above-described configuration, the connection hardware A in which the plate 10 is a rectangular plate 10 that is long in the vertical direction is also used for the connection to the narrow mounting surface Ea of the concrete foundation E. The metal A can be easily, surely and firmly bonded.

  A typical example of the connecting hardware A will be specifically described with reference to the illustrated examples of FIGS.

  1 to 8 includes a plate 10 having an adhesive surface 10a fixed to a concrete foundation E, a leg 21 and an arm 22 bent from the leg 21. , And a bent metal fitting 20 having an inverted L shape that is secured to the lower side of the leg portion 21 at a predetermined position in the lateral direction with respect to the upper side of the plate 10.

  Then, when the metal plate for connection A is bonded to the concrete foundation E, the leg portion 21 of the metal fitting for bending 20 is the Standing along the side of the base F on the concrete foundation E, and the arm portion 22 projecting above the base F, below the hole 23 formed in the arm portion 22 The concrete foundation E and the column G can be connected to each other through the base F by fastening the bolt 40 with a seat inserted through to a hole-down hardware B provided on the column G.

  The connecting hardware A having such a structure is typically a Japan residential wood technology center, and a wooden housing joint hardware that connects the column base to the concrete foundation E in order to prevent the column G from being pulled out due to an earthquake or a typhoon. It is prepared as having a tensile strength equal to or exceeding that of hardware certified as.

  First, the plate 10 constituting the connection hardware A is, for example, a vertically long rectangular plate 10 made of a steel plate, one surface of which is a smooth adhesive surface 10a, and the other surface 10b On the upper side, the lower side of the leg portion 21 of the bent metal fitting 20 can be fixed at a predetermined position in the lateral direction on the upper side.

  In this illustrated example, the lower side of the bent metal fitting 20 can be attached to the upper side of the surface 10b of the plate 10 so that two bent metal fittings 20 can be arranged side by side. The screw holes 11 to 11 are provided in the two, and the two bent metal fittings 20 arranged side by side can be effectively fixed to the plate 10 with screws 24 to 24.

  The screw holes 11 provided in the plate 10 are provided on the upper side of the plate 10, and the four screw holes 11 in which the spaces between the screw holes 11 to 11 are made uniform in the lateral direction are positioned on the same line. The lower screw holes 11 are provided at the same intervals below the vertical lines of the upper screw holes 11 so that eight screw holes 11 to 11 are provided for convenience.

  Further, the distance between the outermost screw hole 11 located in the lateral direction of the screw hole 11 provided in the plate 10 and the side edge of the plate 10 is shorter than half of the interval between the screw holes 11, 11. When the bent metal fitting 20 is attached to the lateral corner of the plate 10, the side edge of the leg plate portion 21 a ′ in the bent metal 20 is located at the same position as the side edge of the plate 10. It can be positioned and assembled.

  Further, screws 25 are screwed into the concrete foundation E as temporary fixing means when the vertically long plate 10 is bonded to the concrete foundation E, and the holes 12 to 12 for inserting the temporary fixing screws 25 are inserted. Are provided on the lower side and the relatively upper side of the plate 10.

  A bent metal fitting 20 that is connected to the plate 10 and constitutes the connecting hardware A includes a leg portion 21 including a rectangular plate portion 21 a that stands up along a side of the base F, and an upper surface of the base F. And an arm portion 22 having a rectangular plate portion 22a projecting out, and the plate portions 21a, 22a so as to extend between the vertically oriented plate portion 21a and the horizontally oriented plate portion 22a sandwiching the bent portion of the bent metal fitting 20. Reinforcing side plate portions 21b and 22b are provided so as to protrude from the longitudinal edges on both sides of the bent metal fitting 20 toward the bent outer side.

  The reinforcing side plate portions 21b and 22b provided in the bent metal fitting 20 may be provided over the entire width in the longitudinal direction of the bent metal fitting 20, and can provide a required strength to the bent portion of the bent metal fitting 20. If there is, it may be provided only in this bent portion. For example, between the required widths of the plate portions 21a and 22a sandwiching the bent portion, the bent portions are provided so as to protrude outward from the bend so that the bent portions can be reinforced from both sides of the plate portions 21a and 22a. Also good.

  The bent metal fitting 20 having such a configuration is provided with a substantially rectangular leg plate portion 21a ′ at the lower end of the leg portion 21 extending downward, and communicated with the screw hole 11 through the leg plate portion 21a ′. Four holes 21c to 21c are provided at equal intervals, and the distance from the hole 21c to the side end of the leg plate portion 21a ′ is the same as the dimension between the screw hole 11 and the side end of the plate 10. is there.

  The insertion hole 23 of the bolt 40 with a seat inserted between the plate 22a in the arm part 22 of the bent metal fitting 20 in the connecting metal A and the hole down metal B separately provided in the column G is the hole down metal. It is provided at a position where B can be inserted conveniently.

  The bolt 40 assembled to the connecting hardware A here can effectively cope with the external force in the pulling direction applied to the column G due to an earthquake or a typhoon. It is prepared as one having a tensile strength equal to or exceeding that of a bolt certified as a joint for a wooden house to be connected to E.

  The hole-down hardware B used in correspondence with the connecting hardware A is typically for a wooden house that connects the column base to the concrete foundation E to prevent the column G from being pulled out at the Japan Housing Wood Technology Center. A material having a tensile strength equal to or greater than that of a metal part certified as a joint metal part is used. As the hole-down hardware B, for example, a commercially available Z hardware or an equivalent thereof can be used.

  In this illustrated example, as a typical hole-down hardware B, a hole-down hardware fixed to the column surface Ga in a direction perpendicular to the surface Ea of the concrete foundation E to which the connection hardware A is prepared for bonding is secured with a screw 34. B is shown, and it is set as the structure provided with the bolt insertion part 33 which makes | forms cylindrical shape in the lower part side of the one side surface of the plate part 30 made from a rectangular steel plate long in the vertical direction. More specifically, a bolt insertion portion provided with a protruding edge portion of a steel bowl-like material having a U-shaped cross section in the plate portion 30 and a bolt insertion hole in a vertical direction on the lower side of the plate portion 30. It welds so that 33 may be provided. Further, the plate portion 30 is appropriately provided with holes 31 to 31 for inserting the screws 34 for fixing the hole-down hardware B to the column surface Ga. The plate portion 30 has the bolt insertion portion. A projecting portion 32 is provided for lifting the bolt 40 inserted through the surface 33 from the surface of the plate portion 30.

  With respect to the plate 10 prepared above, a leg plate portion 21a ′ below the leg portion 21 of the bent metal fitting 20 is attached to the upper end portion of the surface 10b on the plate 10 opposite to the bonding surface 10a. Then, this is fastened with screws 24 to form the connecting hardware A having the desired tensile strength.

  In this illustrated example, the adhesive force to the concrete foundation E is efficiently pulled out so that the column G can be reliably pulled toward the concrete foundation E with the hole-down hardware B in the center of the upper portion of the plate 10. The holes 21c of the leg plate portion 21a ′ of the bending fitting 20 of the connecting hardware A are connected to the four screw holes 11 to 11 and fixed with screws 24, and the bending fitting 20 is attached to the upper center of the plate 10. The connecting hardware A was configured to be positioned.

  A bolt 40 with a seat provided with a seat 40a integrally with a shaft portion 40b is inserted from below into the hole 23 of the arm portion 22 of the connecting hardware A having such a configuration, and the arm of the bent metal fitting 20 in the connecting hardware A is prepared. The portion 22 is positioned so as to be along the surface Ga of the column G on the foundation F in a direction orthogonal to the surface Ea of the concrete foundation E on which the connection hardware A is provided. In this state, the plate 10 is placed on the concrete foundation E. Adhesion is performed using an adhesive 50.

  The attachment of the connecting hardware A is performed by pulling out the pillar G at the Japan Housing Wood Technology Center when the connecting hardware A and the hole-down hardware B provided on the pillar G are connected with the bolt 40 and tightened. In order to prevent adhesion, it is designed to produce adhesive strength with tensile strength that is certified as a joint for wooden houses that connects the column base to the concrete foundation E, for example, using a two-pack type epoxy resin adhesive for connection The plate 10 of the metal object A is adhered to the upper end edge of the concrete foundation E so that the upper end edge of the plate 10 is aligned, and a screw 25 for temporary fixing is screwed into the concrete foundation E through the hole 12. 10 is kept pressed against the concrete foundation E and cured.

  Subsequently, the shaft portion 40b of the seated bolt 40 is inserted into the bolt insertion portion 33 at a position convenient for the mounting of the seated bolt 40 on the surface Ga of the column G standing on the foundation F provided on the concrete foundation E. The hole down hardware B is fixed to the pillar G with a screw 34 in a state of being received inside.

  Subsequently, the nut G is screwed into the male threaded portion 40c of the shaft portion 40b of the bolt 40 protruding upward from the bolt insertion portion 33 through the washer 42 or without the washer interposed, so that the column G is put into the concrete foundation E. The tensile strength of the column G is reinforced by pulling it through the base F.

  The bent metal fitting 20 according to the illustrated example will be described more specifically.

  The bent metal fitting 20 according to the illustrated example is composed of a leg portion having a U-shaped cross section and an arm portion 22 having a U-shaped longitudinal section.

  More specifically, the lower end side of the vertically long rectangular plate portion 21a is a leg plate portion 21a ', and from both vertical edges between the upper end of the plate portion 21a and the leg plate portion 21a'. Reinforcing side plate portions 21b, 21b bent in a right angle so as to protrude forward are provided on the plate portion 21a. Further, the reinforcing side plate portion 21b is a reinforcing side plate portion 21b 'having a progressively smaller protruding width from the middle to the lower end side, and is configured to increase the protruding width of the portion requiring the reinforcement of the bent portion. .

  Further, the arm portion 22 is provided with reinforcing side plate portions 22b and 22b at right angles so as to protrude upward from both side edges of the rectangular plate portion 22a which is long in the lateral direction, and the leg portion 21 side of the reinforcing side plate portion 22b. Further, a bending reinforcement side plate portion 22b ′ is extended from the reinforcement side plate portion 22b so as to be continuous in series.

The refractive reinforcing side plate portion 22b ′ extends continuously from the reinforcing side plate portion 22b so as to sandwich the reinforcing side plate portion 21b of the leg portion 21, and further sandwiches the reinforcing side plate portions 21b and 21b. The reinforcing side plate portions 21b and 21b constituting the leg portion 21 are configured to be tightly placed between the refractive reinforcing plate portions 22b ′ and 22b ′. Both are firmly welded and constructed integrally.
In this bent metal fitting 20, the upper side of the plate portion 21 a constituting the leg portion 21 is a reinforcing portion 21 a ″ that fits between the reinforcing side plate portions 22 b and 22 b constituting the arm portion 22. The back surface of the plate portion 21 a to be welded is in close contact with the front end of the plate portion 22 a constituting the arm portion 22.

  The reinforcing side plate portion 22b has a maximum protruding width at a portion sandwiching the reinforcing portion 21b. The protruding width is gradually reduced toward the tip of the arm portion 22 to reinforce the bent portion. The protruding width of the necessary part is configured to be large.

  Next, the pulling of the column G to the concrete foundation E using the connecting hardware A shown in FIGS. 9 and 10 will be specifically described.

  In the connecting hardware A shown here, the concrete foundation E has a T shape in plan view, and the plate 10 of the connecting hardware A is bonded to the corner of the concrete foundation E having the T shape. In addition, the arm portion 22 of the bent metal fitting 20 assembled to the plate 10 is provided so as to be in close contact with the surface Ga of the column G on which the hole-down hardware B is provided, and between the connection hardware A and the hole-down hardware B. In addition, the seat bolt 40 can be assembled in a substantially vertical state.

  In other words, the bending metal fittings 20 assembled to the center portion on the upper side of the plate 10 are arranged on the side so that the side edge of the leg plate portion 21 a ′ of the bending metal fitting 20 is aligned with the side edge of the plate 10. The lower end side of the leg portion 21 of the bent metal fitting 20, that is, the leg plate portion 21 a ′ is fastened with a screw 24 to form a connection hardware A, and the connection hardware A is the same as described above. The seated bolt 40 is prepared for insertion, and the plate 10 in the connection hardware A is placed on the surface Ea of the concrete foundation E using the adhesive 50, and the side edges of the plate 10 are in a direction perpendicular to the concrete foundation E. Adhere to the surface of the concrete foundation E '.

  The connection hardware A fixed to the concrete foundation E in this way is erected so that the leg portion 21 of the bent metal fitting 20 extends along the side of the base F ′ on the concrete foundation E ′, and the arm portion 22 is The receiving part of the seated bolt 40 can be conveniently configured to protrude on the base F along the surface Ga of the column G parallel to the surface of the concrete foundation E ′.

  In the illustrated examples shown in FIGS. 9 and 10, the configuration and usage other than the above configuration are the same as the configuration and usage of the connection hardware A shown in FIGS. 1 to 8, and are the same or substantially the same. The same number is assigned to the same component and the description is omitted.

  In such a connection hardware A, even when the surface Ea of the concrete foundation E convenient for bonding the connection hardware A does not exist below the reinforcement target column G, the connection hardware A, the hole down hardware B, and the seat bolt 40, the reinforcement work required for the reinforcement target column G can be reliably and easily applied.

  Next, the connection hardware A shown in FIGS. 11 to 14 will be described in detail.

  The connecting hardware A according to this illustrated example is formed by assembling two bent metal fittings 20 on the upper side of the plate 10 to form a strengthened connecting hardware A. The configuration other than that in which the bent metal fittings 20 and 20 are provided on the plate 10 in the same manner as shown in FIGS. 1 to 10 to form the connection hardware A, and the usability are the same as those in FIGS. The same reference numerals are given to the constituent parts and substantially the same constituent parts, and description thereof will be omitted.

  The connecting hardware A according to the illustrated example has the same configuration as that shown in FIGS. 1 to 10 on the upper side of the plate 10 having the same configuration as that of the plate 10 shown in FIGS. The bent metal fittings 20 are arranged side by side, and the four holes 21c provided in the leg plate portion 21a ′ on the lower end side of the bent metal fittings 20 are replaced with eight screw holes on the upper side of the plate 10. The screws 24 are used in a state where the rectangular plate portions of the leg plate portions 21a ′ are arranged on the left and right sides of the upper portion of the plate 10 so as to be in communication with the four screw holes 11 to 11 on the left and right sides of the plate 11, respectively. And a leg 21 that rises upward from the plate 10, and a connection that includes an inverted L-shaped bent metal fitting 20, 20 that includes an arm 22 so as to extend above the base F from the upper side of the leg 21. Hardware Constitute a.

  In addition, in this connection hardware A, the reinforcement between the tips of the arm portions 22 and 22 of each of the bent metal fittings 20 and 20 is reinforced so as to increase the reinforcing effect of the connection hardware A and to provide integrity during handling. It is connected with a hardware 26.

  The reinforcing metal piece 26 is made of a steel plate material having an L-shaped cross section, and is attached so as to extend over the lower surfaces of the arm portions 22 and 22 and bends at right angles from the contact plate portion 26b. Standing up so as to cover the front end surface of each arm part 22 and touching so as to cover the front end of the plate part 22a and the front ends of the reinforcing side plate parts 22b and 22b on both sides of the plate part 22a standing up from the plate part 22a. And a reinforcing plate portion 26a. Screws 26d to 26d are screwed into the screw holes 26c provided in the contact plate portion 26b from the holes 22c to 22c provided in the plate portions 22a and 22a, respectively. The front ends of the arm portions 22 and 22 of the metal fittings 20 and 20 are connected.

  Each of the connecting hardware A configured as described above can be used in the embodiment shown in FIGS. 1 to 10 as a unit integrally including a pair of bent metal parts 20 and 20, and will be described. It can also be used in the embodiments of FIGS.

  In the illustrated example, the concrete foundation E ′ oriented in a direction perpendicular to the surface Ea on the surface Ea of the concrete foundation E in the corner portion of the concrete foundation E having a T shape or a cross shape in plan view. The plate 10 of the connection hardware A is adhered to the surface of the metal plate A, and the bending metal fitting 20 on the concrete foundation E ′ side of the bending metal fittings 20 and 20 assembled to the plate 10 is attached. In a state where the seat bolt 40 is inserted into the hole 23 of the arm portion 22, the arm portion 22 of the bent metal fitting 20 is along a surface Ga in a direction orthogonal to the surface Ea of the concrete foundation E in the column G to be reinforced. The connecting hardware A and the hole-down hardware B provided on the column G are connected to each other by a bolt 40 with a seat.

  Next, the connection hardware A shown in FIGS. 15 to 17 will be described.

  15 to 17, the connecting hardware A constituting the second invention includes a plate 10 having an adhesive surface 10 a fixed to a concrete foundation E, a leg portion 21, and the leg portion 21. A bent metal fitting 20 having a bent arm portion 22 and having a bent L-shape, wherein the lower side of the leg portion 21 is fixed to the upper side of the plate 10 at a predetermined position in the lateral direction. It is configured with.

  And when the said plate 10 which fixed the said bending | flexion metal fitting 20 in this connection metal fitting A was adhere | attached on the said concrete foundation E, the said leg part 21 of this bending | flexion metal fitting 20 is the base F side on the said concrete foundation E. Further, the arm portion 22 is protruded on the base F, and a fixing screw D is screwed into the base F through a hole 23 formed in the arm portion 22. Thus, the foundation F and the concrete foundation E can be connected.

  Here, the concrete foundation E to which the connecting hardware A is fixed may be a foundation in any form as long as it is a concrete foundation E having a rising edge that receives the foundation F, for example, a single foundation, a cloth foundation, etc. Various concrete foundations can be targeted.

  Further, the connecting hardware A used here includes a plate 10 having an adhesive surface 10 a fixed to the concrete foundation E, a leg portion 21, and an arm portion 22 bent from the leg portion 21. The lower portion of the leg portion 21 is provided with a bent metal fitting 20 having an inverted L shape that is fixed to the upper portion of the plate 10 at a predetermined position in the lateral direction. When the plate 10 to which the bent metal fitting 20 is fixed is bonded to the concrete foundation E, the leg portion 21 of the bent metal fitting 20 is erected along the side of the base F on the concrete foundation E, and As long as the arm portion 22 is configured to protrude on the base F, the arm portion 22 may be formed of any material or in any shape.

  In the connecting hardware A configured as described above, the plate 10 in the connecting hardware A can be easily fixed to the concrete base surface Ea having a robust and smooth surface, and can be firmly fixed. The base F can be easily firmly fixed to the concrete foundation E with a fixing screw D such as a lag screw.

  In addition, in such a connecting hardware A, when the pillar G is erected on the base F, the base F is lag screwed to the concrete foundation E even at the side position closest to the erected pillar G. It can fix firmly with the fixing screws D, such as.

  Further, in such a connecting hardware A, the plates 10 are bonded to both side faces Ea and Ea of the concrete foundation E so that the pillars G are sandwiched between the connecting hardware A and A that form a pair from both sides of the base F. The foundation F can be securely fixed to the concrete foundation E with the required holding force.

  Further, in the connection hardware A according to the above-described configuration, in the connection hardware A in which the plate 10 can fix the two bent metal fittings 20 in a parallel state on the upper side thereof, as needed, If necessary, the plate 10 can be provided with one or two bent metal fittings 20 to meet various requirements.

  In the connecting hardware A having the above-described configuration, the bent metal fitting 20 includes a rectangular plate portion 21a along the side of the base F and a rectangular plate portion 22a along the upper surface of the base F. In the connecting metal fitting A provided with reinforcing side plate portions 21b, 21b, 22b, and 22b projecting outwardly from the longitudinal edges on both sides of the plate portions 21a and 22a sandwiching at least the bent portion, the bent metal fitting 20 Are effectively reinforced by the reinforcing side plate portions 21b and 22b.

  Further, in the connection hardware A having the above-described configuration, the connection hardware A in which the plate 10 is a rectangular plate 10 that is long in the vertical direction is also used for the connection to the narrow mounting surface Ea of the concrete foundation E. The metal A can be easily, surely and firmly bonded.

  The connection hardware A shown in FIGS. 15 to 17 is for fixing the base F to the concrete foundation E effectively using the connection hardware A, and the base F can be placed on the upper part. The plate 10 in the connecting hardware A is adhered to the surface Ea of the concrete foundation E parallel to the side surface of the foundation F in the concrete foundation E using the adhesive 50, and the plate 10 adhered to the surface Ea A fixing screw D such as a lag screw is screwed into the base F through a hole 23 provided in the arm part 22 protruding above the base F from the upper side of the leg part 21 standing along the side surface of the base F. The base F can be securely fixed to the concrete foundation E.

  Such a connecting hardware A has the same structure as that shown in FIGS. 1 to 14 except that the base F is fixed to the concrete foundation E in place of the pillar G with the fixing screw D such as a lag screw without using the hole down hardware B. The connecting hardware A having the same or substantially the same structure as the connecting hardware A is similarly adhered and used to the concrete foundation E, and the same or substantially the same components are assigned the same numbers. Therefore, the description is omitted.

  In this illustrated example, for the purpose of more firmly supporting the foundation F from the front-rear direction, the connecting hardware A, A is arranged on both sides of the concrete foundation E, and the foundation F is connected to the connecting hardware A, A. Fixing of the foundation F in the concrete foundation E portion where the anchor bolts are not provided, and fixing the foundation F after the building is constructed. It can be used conveniently for reinforcement.

“Test Example 1”
The plate 10 is composed of a steel plate having a size of 93 mm × 180 mm and a thickness of 4.5 mm, and the screw hole 11 is centered at 20 mm and 30 mm positions from the upper end of the plate 10, 9 mm from one end of the plate 10, It provided so that it might become a position of 34 mm, 59 mm, and 84 mm.
The bent metal fitting 20 includes a leg portion 21 and an arm portion 22. The leg portion 21 is formed of a steel plate portion 21a having a bottom surface width of 43 mm, a length of 230 mm, and a thickness of 4.5 mm. On both side edges, between the upper end of the plate portion 21a and a position 90 mm below, a reinforcing side plate portion 21b having a protruding width of the outer surface of 30 mm is further provided between the reinforcing side plate portion 21b having a width of 30 mm and a position below 75 mm. Then, the reinforcing side plate portion 21b ′ having a gradually reduced protruding width is further tapered between the reinforcing side plate portion 21b ′ and the position below the reinforcing side plate portion 21b ′ by 15 mm so that the protruding edge of the reinforcing side plate portion 21b approaches the plate portion 21a. The reinforcing side plate portion is provided, and the leg plate portion 21a ′ not provided with the reinforcing side plate portion 21b is provided as an extending portion of the plate portion 21a. The leg plate portion 21a 'with 43mm wide, moreover, and are configured to protrude from the reinforcement plate portion 21b to 50mm lower position.

  Further, the arm portion 22 side has a maximum protrusion width of the outer surface on the side of the plate portion 21a on both side edges of the plate portion 22a made of a steel plate having a lower surface width of 52 mm, a length of 100 mm, and a thickness of 4.5 mm. Is provided with a reinforcing side plate portion 22b of 34.5 mm, and further protrudes 30 mm from the reinforcing side plate portion 22b toward the leg portion 21 and is bent downward to bend the reinforcing side plate portion 22b ′ having a vertical width of 47 mm. It is as a structure to provide.

  A reinforcing side plate portion 21b is provided between the bent reinforcing side plate portions 22b ′ and 22b ′ so that the back surface of the plate portion 21a is brought into contact with the side end of the plate portion 22a between the bent reinforcing side plate portions 22b ′ and 22b ′. The plate portion 21a is accommodated, and both are integrally formed by welding.

  Further, the leg plate portion 21a 'is provided with four holes 21c to 21c having a hole center at a position of 9 mm from each side end, 10 mm from the lower end, and 40 mm. The plate portion 22a is provided with a hole 23 and two holes 22c and 22c.

  The reinforcing metal piece 26 includes a 95 mm long, 4.5 mm thick steel plate bent into an L shape and a backing plate portion 26 b having a bent outer surface width of 26 mm and a reinforcing plate portion 26 a having a bent outer surface width of 20 mm. In addition, the contact plate portion 26b is provided with screw holes 26c to 26c centered at positions of 10 mm, 33 mm, 62 mm, and 85 mm from one end.

In addition, when the said receiving metal object 10 was adhere | attached on the surface Aa of the concrete foundation A, and the tensile test was carried out, it was confirmed that it peels with the maximum load of 50 kN.
On the other hand, the reinforcement of the pillar by the receiving metal 10 is generally aimed at a short-term allowable strength of 20 kN and a maximum strength of 40 kN.
From this point, in order to secure the maximum proof stress of 20 kN while maintaining the horizontal width of 93 mm, 180 mm × 40/50 = 144 mm. In the case of the connecting hardware A that satisfies the target value, the adhesion of 93 mm × 144 mm or more. The plate 10 is preferably configured to have an area.

  As shown in FIG. 1 to FIG. 8, a metal fitting for connection A is prepared by fixing the bent metal fitting 20 with screws 24 in the four screw holes 11 in the central portion on the upper side of the plate 10. A bolt 40 with a seat having a diameter of a shaft portion 40b of 16 mm is inserted from below the hole 23 in the arm portion 22 of the bent metal fitting 20, and the bolt 40 is smoothly inserted into the bolt insertion portion 33 of the hole-down hardware B attached to the column G. The adhesive surface 10a of the plate 10 is made of a two-pack type epoxy resin adhesive 40 (Seacadur 30 manufactured by Seeker, Switzerland) so that the bent metal fitting 20 of the connecting hardware A is aligned with the surface Ga of the column G so that it can be inserted. Is pressed against the upper end of the surface Ea of the concrete foundation E under the base F where the pillar G is erected so that the upper end of the plate 10 is aligned with the temporary fixing screws 25 from the three holes 12. Put screws cornerstone E, the plate 10 were bonded while maintaining the state pressed against the surface Ea of the concrete foundation E.

  The hole-down hardware B having the above-described structure is bolted to the bolt insertion portion 33 of the hole-down hardware B on the surface Ga of the column G in a direction orthogonal to the surface Ea of the concrete foundation E prepared for bonding of the connection hardware A. It is prepared to be fastened with screws 34 so as to receive 40 shaft portions 40b.

  In addition, the hole down hardware B used here comprises a rectangular plate part 30 of 160 mm × 40 mm long in the vertical direction with a steel plate of 6 mm thickness, and a height of 38.5 mm is formed on the lower side of the plate part 30. The U-shaped member having a length of 60 mm is made of a steel material having a thickness of 4.5 mm, and each longitudinal edge of the U-shaped member is welded to the plate portion 30 to form a bolt insertion portion 33. It was fixed to the pillar G with five screws 34. The hole down metal B is provided with a tensile strength of 15 kN, and a nut 41 is screwed into a screw part 40c of a bolt 40 inserted into the bolt insertion part 33 of the hole down metal B, and the column G is drawn to the concrete foundation E. The tensile strength was measured.

  Table 1 shows the yield load and the two-thirds of the maximum load of each specimen under the above conditions and their short-term allowable yield strength.

  In this test example, it was confirmed that the connecting hardware A brings the required tensile strength to the column F.

"Test Example 2"
As shown in FIGS. 9 and 10, the plate 10 and the bent metal fitting 20 are used, and the bent metal fitting 20 is screwed into four screw holes 11 to 11 on one side of the upper side of the plate 10. -24 to secure the connecting hardware A in the same condition as described above, and the arm portion 22 of the bent metal fitting 20 extends along the surface Ga of the column G perpendicular to the surface Ea of the concrete foundation E. The joint hardware A was provided on the concrete foundation E under the same conditions as above, and the tensile strength was measured under the same conditions as described above with the same hole-down hardware B provided under the same conditions as the above conditions. .

  Table 2 shows the yield load and the two thirds of the maximum load of each specimen in this test example, and their short-term allowable yield strength.

  In this test example, it was confirmed that the connecting hardware A brings the required tensile strength to the column F.

“Test Example 3”
As shown in FIGS. 11 to 14, the plate 10 and the two bent metal fittings 20 are prepared, and the eight screw holes 11 to 11 are arranged so that the bent metal fittings 20 and 20 are arranged on the upper side of the plate 10. 11 with screws 24 to 24 under the same conditions as described above, and the arm 20 so that the reinforcing plate 22b comes into contact with the tip of the arm portion 22 of each of the bending brackets 20 and 20. The upper surface of the abutting plate portion 26b of the reinforcing metal piece 26 is pressed against the lower surface of the portion 22 and fixed with screws 26d, 26d to constitute the connecting hardware A,
Moreover, while the arm portion 22 of the one bent metal fitting 20 is provided along the surface Ga of the column G perpendicular to the surface Ea of the concrete foundation E, the connection hardware A is provided on the concrete foundation E under the same conditions as described above. The hole-down hardware B is composed of a 195 mm × 40 mm long rectangular plate portion 30 made of a steel plate having a thickness of 6 mm, and the lower portion of the plate portion 30 has a height of 38.5 mm and a length of A 60 mm U-shaped member is made of a steel material having a thickness of 4.5 mm, and each longitudinal edge of the U-shaped member is welded to the plate portion 30 to form a bolt insertion portion 33, which is made of seven screws. 34 is fixed to the pillar G, and the hole-down hardware B is provided with a tensile strength of 20 kN, and the seated bolt 40 inserted into the hole 23 of the arm portion 22 of the connection hardware A is attached to the hole-down hardware. Inserted through the bolt insertion portion 33, by screwing the nut 41 from the insertion portion 33 to the threaded portion 40c of the bolt 40 which protrudes upward, draw the posts G to concrete foundation E, and measured the tensile strength.

  Table 3 shows the yield load, two-thirds of the maximum load, and the short-term allowable yield strength of each specimen in this test example.

  In this test example, it was confirmed that the connecting hardware A brings the required tensile strength to the column F.

“Test Example 4”
As shown in FIGS. 15 to 17, the plate 10 and the bent metal fitting 20 are used, and the bent metal fitting 20 is inserted into the four screw holes 11 to 11 at the center portion on the upper side of the plate 10 with screws 24 to 24. At 24, the connection hardware A is constructed by fastening under the same conditions as described above, and the connection F is connected under the same conditions as described above so that the foundation F on the concrete foundation E is sandwiched from the front and rear by the bending metal 20 of the connection hardware A. A hardware A is provided on the concrete foundation E, and a fixing screw D (lag screw) having a length of 75 mm is screwed into the foundation F from the hole 23 of the arm portion 22 of each connection hardware A, and the foundation is placed on the concrete foundation E. F was fixed and its tensile strength was measured.

  Table 4 shows the yield load and the two thirds of the maximum load of each specimen in this test example, and their short-term allowable proof stress.

  In this test example, it was confirmed that the base F was fixed to the concrete foundation E by the connection hardware A in a state having the required tensile strength.

In the tensile test example, the yield load short-term allowable strength is measured by multiplying the average value of the yield load of the six specimens by a variation coefficient (a kind of safety factor) calculated based on the standard deviation.
In addition, the average value of the maximum load of six specimens multiplied by two-thirds is multiplied by a variation coefficient (a kind of safety factor) calculated based on the standard deviation to be two-thirds of the maximum load. Measure the short-term allowable strength,
Of the short-term allowable proof stress measured here, the allowable proof strength having a small value was defined as the allowable proof strength of the connection hardware.

In the connecting hardware A used for such a structure, the short-term allowable yield strength derived from the average value of the yield load is usually smaller than the value derived from the average value of two-thirds of the maximum load. The calculated value is the allowable strength of the connected hardware A.
In the event of a large earthquake, even if a force exceeding the allowable strength is applied to the hardware A for connection, the allowable strength derived from the maximum load is multiplied by a safety factor to two thirds of the maximum load. Generally, the allowable yield strength corresponding to one-half of the maximum load is set, and the connecting hardware A according to the present embodiment is designed based on the allowable yield strength value derived from the yield load smaller than this value. Therefore, it is possible to configure a connecting hardware having an allowable strength close to twice the allowable allowable strength as a reference.

The perspective view which shows the state using the typical metal fitting for connection Side view showing the same section in cross section Separate perspective view of the main parts The perspective view which shows a part of the principal part components Side view of the bending bracket Plan view Front view Front view of the plate The perspective view which shows the other use condition using the typical metal fitting for connection Side view showing the same section in cross section The perspective view which shows the other use condition which uses the typical metal fitting for connection Side view showing the same section in cross section Separate perspective view of the main parts Parts separation perspective view of the connecting hardware The perspective view which shows the other use condition which uses the typical metal fitting for connection Side view showing the same section in cross section Separate perspective view of the main parts

Explanation of symbols

A Connection hardware B Hole-down hardware E Concrete foundation F Base G Column 10 Plate 20 Bending bracket 21 Leg 22 Arm 23 Hole 33 Bolt insertion part 40 Bolt

Claims (5)

A plate having an adhesive surface that is secured to a concrete foundation;
An arm portion which is bent from the leg portion and a leg portion, for connecting with a bent metal forming the credit L-shape, which is fastened to respect the lower side of the leg portion upper side of the plate Hardware,
The plate of the connecting hardware is provided with four upper screw holes at equal intervals on the same horizontal line on the upper side, and lower screws respectively spaced apart from the upper screw holes at the same interval. With holes,
In the leg plate portion provided at the lower end of the leg portion, the bending metal fitting includes two adjacent upper screw holes and a lower screw hole below each of the upper screw holes in the plate. It has four holes that communicate with the
The leg plate part of the bent metal fitting is connected to two upper screw holes adjacent to each other among the eight screw holes provided in the plate and a lower screw hole below each of the upper screw holes. The four holes are connected to each other, and screws are screwed into the screw holes from the holes of the leg plate portion to fix the plate to the bent metal fittings,
When the plate to which the bent metal fitting is fixed is bonded to the concrete foundation,
The leg portion of the bent metal fitting is erected along the side of the foundation on the concrete foundation, and the arm portion protrudes on the foundation;
A bolt with a seat inserted from below the hole formed in the arm portion is fastened to a hole-down hardware provided on the column so that the concrete foundation and the column can be connected via the foundation. A metal fitting for connection, characterized by A plate having an adhesive surface that is secured to a concrete foundation;
An arm portion which is bent from the leg portion and a leg portion, for connecting with a bent metal forming the credit L-shape, which is fastened to respect the lower side of the leg portion upper side of the plate Hardware,
The plate of the connecting hardware is provided with four upper screw holes at equal intervals on the same horizontal line on the upper side, and lower screws respectively spaced apart from the upper screw holes at the same interval. With holes,
In the leg plate portion provided at the lower end of the leg portion, the bending metal fitting includes two adjacent upper screw holes and a lower screw hole below each of the upper screw holes in the plate. It has four holes that communicate with the
The leg plate part of the bent metal fitting is connected to two upper screw holes adjacent to each other among the eight screw holes provided in the plate and a lower screw hole below each of the upper screw holes. The four holes are connected to each other, and screws are screwed into the screw holes from the holes of the leg plate portion to fix the plate to the bent metal fittings,
When the plate to which the bent metal fitting is fixed is bonded to the concrete foundation,
The leg portion of the bent metal fitting is erected along the side of the foundation on the concrete foundation, and the arm portion protrudes on the foundation;
A connecting hardware characterized in that a fixing screw is screwed into the base from a hole provided in the arm portion so that the base and the concrete foundation can be connected.  The metal fitting for connection according to claim 1 or 2, wherein the plate is configured such that two bent metal fittings can be fastened in parallel on an upper side thereof.  The bending metal fitting includes a rectangular plate portion extending along the side of the base and a rectangular plate portion extending along the upper surface of the base, and at least from the longitudinal edges on both sides of the plate portion sandwiching the bending portion. The metal fitting for connection according to claim 1, 2 or 3, further comprising a reinforcing side plate portion projecting outward from the bent side.  The metal plate for connection according to claim 1, 2, 3, or 4, wherein the plate is a rectangular plate that is long in the vertical direction.

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