JP2010156167A - Fence for road - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fence for a road wherein a base metal fitting for supporting a support composing the fence for the road, such as a balustrade can be easily manufactured, and mass productivity is enhanced, while facilitating transportation to a job site and mounting work by lightening the weight of the base metal fitting. <P>SOLUTION: The fence 1 for the road includes: the support 2 consisting of a hollow member and composing the fence 1 for a road; the base metal fitting 30 including a base portion 10 which is fixed with an anchor bolt 4 on a felloe guard 3a at the installation location 3 of the fence for the road, and a support portion 20 which is erected on the base portion 10 and is inserted into the hollow portion 2a of the lower end of the support 2. The support portion 20 is formed with a pair of side pieces 21, 22 facing each other in parallel and has a reinforcing piece 24 for connecting both the side pieces 21, 22. The base portion 10 and the support portion 20 are formed with an aluminum extrusion material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a road fence that is used by being fixed to a road such as a railing installed on the ground cover at the end of a bridge, a sidewalk fence, a protective fence for a vehicle, and the like.

  Conventionally, this type of road fence is generally installed by embedding and fixing the lower end of a column in concrete that constitutes the ground cover of the installation location (see, for example, Patent Document 1).

  In addition, when fixing the column to the base plate fixed with anchor bolts, instead of fixing the column to the base plate with plate-shaped fixing ribs, a reinforcing member made of channel material is reinforced facing the center of the base plate. Protruding so that a gap is formed between the materials, inserting the struts between the reinforcing materials and fitting them, the reinforcing member upper edge and the reinforcing material side edge as the strut, and the reinforcing member lower edge as the base plate, respectively The thing of the structure to weld is also known (for example, refer patent document 2).

Moreover, the thing of the structure which fits the lower end side of a support | pillar in the support | pillar standing hole of the base metal fitting which consists of casting material which consists of a support | pillar standing hole and a base part is also known (for example, refer patent document 3).
Japanese Patent Laid-Open No. 11-93126 (FIGS. 1 and 2) Japanese Patent Laid-Open No. 2001-193029 (Claims, FIGS. 2 and 3) JP 2007-113266 A (Claims, FIGS. 1 and 2)

  However, since the method described in Patent Document 1 is a method of embedding struts in the ground cover, this method may not be used in road conditions.

  Moreover, since the thing of patent document 2 is a structure which fixes a base plate and reinforcement materials, such as H-shaped steel and a channel material, by welding, it requires an effort for preparation of the base metal fitting which consists of a base plate and a reinforcement material. There is a problem with mass productivity. In addition, a labor for welding the reinforcing material such as the channel material and the support is required.

  Moreover, since the base metal fitting is formed of a casting material, the device described in Patent Document 3 requires time and labor for producing the base metal and is expensive.

  The present invention has been made in view of the above circumstances, and facilitates the production of the base metal fittings, improves the mass productivity, and makes the base metal fittings light in weight so that it can be easily transported and installed on the site. The purpose is to provide fences.

  In order to solve the above-described problems, a road fence according to the present invention includes a support column made of a hollow member that constitutes the road fence, a base portion fixed to the ground by anchor bolts, and an upright stand on the base portion. And a base fitting made of a support portion inserted into the hollow portion at the lower end of the support column, and the support portion is formed such that a pair of opposing side pieces are formed in parallel, The base part and the support part are formed of an aluminum extruded profile (Claim 1).

  By configuring in this way, the base metal fitting is formed of an aluminum extruded shape consisting of a support portion and a base portion. Therefore, the base metal fitting can be easily manufactured, and the hollow portion can be easily formed by extrusion molding. Since it can form, a base metal fitting can be made lightweight.

  In the present invention, it is preferable that the upper ends of the pair of side pieces constituting the support portion are connected by a reinforcing piece to form a hollow portion (claim 2). By comprising in this way, the intensity | strength of a base metal fitting can be strengthened.

  Moreover, in this invention, it can be set as the structure which connected the said base part and the support part with the connection volt | bolt (Claim 3). In this case, the base portion is formed in a substantially channel-shaped cross section having a recess on the lower surface that can accommodate the head of the connecting bolt (Claim 4), or the head of the connecting bolt can be accommodated on the lower surface. It is preferable to form a plurality of concave grooves (claim 5). Further, it is preferable that a countersink is formed on the lower surface of the base portion and the head of the connecting bolt is formed in a dish shape.

  By comprising in this way, after forming a plate-shaped base part and a hollow support part with a separate extrusion shape member made from aluminum, it can fix with a connection bolt and can be integrated. In this case, it is possible to prevent the head portion of the connecting bolt from projecting to the lower surface of the base portion by forming a recess or a groove that can accommodate the head portion of the connecting bolt on the lower surface of the base portion. Item 4, 5, 6).

  Further, in the present invention, the base portion and the support portion may be formed of an integral aluminum extruded shape, and the support portion may be erected at the center of the base portion by cutting. ).

  By configuring in this way, the base metal fitting can be formed of an extruded aluminum member in which the base portion and the support portion are integrated, so that there is no overlapping portion for connecting the base portion and the support portion. The weight of the base metal fitting can be further reduced.

  In the present invention, the supporting portion may have any shape as long as the opposing side pieces are parallel and have sufficient strength to fix the road fence. For example, the outer shape of the supporting portion is formed in a substantially rectangular shape. Alternatively, one side piece of the support portion may be formed higher than the other side piece, and the top portions of the both side pieces may be connected by an inclined connecting piece (claim 8). In this way, one side piece of the support part is formed higher than the other side piece, and the top part of both side pieces is connected with the inclined connecting piece, so that the side piece formed higher is placed on the column from the side where the side piece is located. The reaction force acting on the support from the support portion when a horizontal load is applied can be reduced. In this way, it is effective to increase the side piece on the side having a large load acting on the support column.

  In the present invention, it is preferable that the reinforcing piece of the support portion constitutes a truss. In this way, by using a truss structure for the support portion, it is possible to reduce deformation when a bending moment acts on the support portion via the support column, so that the strength of the base bracket is improved and the base bracket is lightened. be able to.

  Moreover, in this invention, when the cross-sectional area of the said support | pillar is large and a hollow part is large, you may interpose a spacer in the clearance gap between a support | pillar and a support part (Claim 10). As described above, by interposing the spacer in the gap between the support column and the support portion, it is possible to support the support column having different inner dimensions with a single type of base bracket in a stable state.

  Furthermore, the said spacer is interposed in the side where the main load with respect to a road fence acts, and the height is good to make it higher than a support part. As a result, in a column having a large cross-sectional shape, the reaction force applied to the column is smaller than that of the base metal fitting even if the column wall is thinned.

  According to this invention, since it is configured as described above, the following effects can be obtained.

  Since the base bracket is formed of an aluminum extruded profile consisting of a support portion having a pair of parallel side pieces and a base portion, the base bracket can be easily manufactured, reduced in weight, and transported to the site. And installation work can be facilitated.

  Further, by providing the truss structure reinforcing piece on the hollow support portion, the support portion of the road fence can be given strength.

  In addition, by interposing a spacer in the gap between the support and the support portion, it is possible to support the support with different internal dimensions in a stable manner by using one type of base bracket, so even if the support has different dimensions, 1 By preparing various types of base brackets, you can install road fences. At this time, by increasing the height of the spacer, it is possible to reduce the reaction force acting on the support column rather than the base metal fitting.

  Below, the case where the best embodiment of the road fence which concerns on this invention is utilized for the railing for sidewalks is described in detail based on an accompanying drawing.

<First Embodiment>
FIG. 1 is a schematic perspective view showing an example of a use state in which a road fence according to the present invention is applied to a handrail, and FIG. 2 is a cross-sectional view showing an attachment state of the first embodiment of the handrail.

  As shown in FIGS. 1 and 2, the rail 1 includes a hollow member made of aluminum constituting the rail 1, for example, a column 2 made of an extruded aluminum member having a substantially hollow rectangular shape, and an installation place 3 such as a bridge. A base portion 10 fixed to the ground cover 3 a at the end by an anchor bolt 4, and a support portion 20 that is erected on the base portion 10 by a connecting bolt 5 and is inserted into the hollow portion 2 a at the lower end portion of the column 2. The base metal fitting 30 which consists of these is comprised. An upper horizontal beam 6 is installed at the upper end of each column 2, and a lower horizontal member 7 is installed at the middle portion of each column 2.

  As shown in FIGS. 2 to 4, the base portion 10 constituting the base metal fitting 30 is formed in a substantially channel-shaped cross section having a recess 11 in which the head 5 a of the connecting bolt 5 can be accommodated on the lower surface. As shown in FIG. 5, the base portion 10 is formed by cutting an aluminum extruded shape member 10a having a substantially channel cross section into a predetermined dimension. Through holes 12 through which the anchor bolts 4 are inserted are provided at the four corners of the base portion 10 thus formed, and mounting holes 13 through which the connecting bolts 5 are inserted are provided at four locations in the center. .

  As shown in FIG. 6, the support portion 20 is formed by a pair of parallel side pieces 21 and 22 and an upper end reinforcing piece 23 that connects the upper ends thereof and forms a substantially hollow rectangular shape. The support portion 20 is formed of an aluminum extruded shape member 20a having predetermined dimensions with both side pieces 21, 22 and an upper reinforcing piece 23 connecting the upper ends thereof and a reinforcing piece 24 connecting the both side pieces 21, 22 diagonally. It is formed by cutting.

  The support portion 20 formed in this manner is formed into a hollow shape by the upper end reinforcing piece 23 having a substantially hollow rectangular shape, and a reinforcing piece 24 that connects the pair of both side pieces 21 and 22 in the support portion 20 diagonally. Since the truss structure is formed, the deformation when the support portion 20 receives a bending moment can be reduced, so that the cross-sectional thickness can be reduced and the weight of the support portion 20 can be reduced. .

  Screw holes 25a into which the connecting bolts 5 are screwed are engraved at four places on the lower piece of the support portion 20 formed as described above, and attached to, for example, two places on the upper and lower sides of one side piece 21. A screw hole 25b into which the bolt 8 is screwed is formed. In addition, the screw hole 25b does not necessarily need to be two places, and may be one place.

  A base fitting in which the base portion 10 and the support portion 20 are integrated by screwing the connecting bolt 5 inserted into the mounting hole 13 of the base plate 10 formed as described above into the screw hole 25a of the support portion 20. 30 is formed.

  Next, the attachment procedure of the handrail 1 will be described. First, anchor bolts 4 are planted in advance on the ground cover 3a of the installation place 3 for road fences such as bridges. In addition, the support portion 20 is inserted into the hollow portion 2a of the lower end portion of the support column 2 in advance at the lower end of the support column 2 to be installed, and an attachment hole (not shown) provided on one side surface of the support column 2 is provided. The mounting bolt 8 to be inserted is screwed into the screw hole 25b formed in the side piece 21 of the support portion 20 to fix the support column 2 and the base metal fitting 30 in advance.

  Next, in the installation place 3, the anchor bolt 4 is inserted into the through hole 12 of the base metal fitting 30, and the nut 4a is screwed (fastened) to the anchor bolt 4 protruding above the base portion 10 of the base metal fitting 30, The support 2 is fixed by fixing the base metal fitting 30 to the ground cover 3a.

  In this embodiment, the mounting bolt 8 for fixing the support 2 and the base bracket 30 is on the side opposite to the sidewalk. For example, in the case of a roadside fence, the side opposite to the sidewalk, road protection is provided. In the case of a fence, it is convenient that the side opposite the roadway side is not in appearance or in the way, but it may be arranged on an appropriate side as necessary. The mounting bolts 8 are intended to prevent the column 2 from moving in the direction of pulling upward from the base metal fitting 30, and the number of the mounting bolts 8 may be changed or provided on both sides.

  Since the head portion 5a of the connecting bolt 5 is accommodated in the recess 11 in the base portion 10, the fixing of the base metal fitting 30 to the ground cover 3a can be facilitated and stabilized.

  FIG. 7 is a perspective view showing another form of the base metal fitting 30A in the first embodiment, and FIG. 8 is a front view of the base metal fitting 30A. The base metal fitting 30 </ b> A forms a support portion 20 </ b> A that is formed in a substantially hollow rectangular shape by a pair of side pieces 21, 22 and an upper reinforcing piece 23 that face each other in parallel instead of the support portion 20. This support portion 20A is formed by cutting an aluminum extruded shape member formed of a horizontal reinforcing piece 24A that connects the central portions of both side pieces 21 and 22 in the support portion 20A into predetermined dimensions. In this example, since the truss structure is not used as compared with the first embodiment, the wall thickness is slightly increased.

  In addition, since the other part of the base metal fitting 30A is the same as the said base metal fitting 30, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

  In the above description, the case where the base portion 10 is formed in a substantially channel shape having a recess 11 in which the head portion 5a of the connecting bolt 5 can be accommodated has been described, but as shown in FIG. A base portion 10A in which a plurality of concave grooves 14 capable of accommodating the heads 5a of the connecting bolts 5 are formed on the lower surface may be used. Alternatively, as shown in FIG. The base portion 10B in which the countersunk hole 15 is formed on the bottom surface of the base portion 10B is used, and the head 5b of the connecting bolt 5A may be formed in a dish shape. By forming in this way, the heads 5a and 5b of the connecting bolts 5 and 5A can be accommodated in the countersink 15, so that the base fitting 30 can be easily fixed to the ground cover 3a.

<Second Embodiment>
FIG. 10 is a cross-sectional view showing the mounting portion of the second embodiment in which the road fence according to the present invention is applied to a sidewalk fence, FIG. 11 is a perspective view of a base metal fitting 30C in the second embodiment, and FIG. It is a front view of metal fitting 30C. In this case, the right side of FIG. 10 is installed on the sidewalk side, and the main external force is applied to this sidewalk fence from the sidewalk side (horizontal load P from the right to the left side in the figure). Designed.

  As shown in FIG. 13, in the base metal fitting 30C of the second embodiment, the base portion 10C and the support portion 20C are formed of an aluminum extruded profile, and the support portion 20C is formed at the center of the base portion 10C by cutting. Is formed upright.

  The base portion 10C of the base metal fitting 30C in the second embodiment is formed in a plate shape. Further, the support portion 20C of the base metal fitting 30C is formed such that one side piece 26 parallel to each other, that is, the side piece 26 located on the side on which the main load P acts is formed higher than the other side piece 27. The top part of 27 is connected by the inclination piece 28, and the two reinforcement pieces 29 connected in an inclined manner between the both side pieces 26, 27 of the support part 20C constitute a truss. Note that through holes 12 through which the anchor bolts 4 are inserted are provided at the four corners of the base portion 10C. In addition, screw holes 25b into which the mounting bolts 8 are screwed are formed, for example, at two locations on the other side piece 27 in the support portion 20C. In addition, the screw hole 25b does not necessarily need to be two places, and may be one place.

  According to the base metal fitting 30C formed as described above, since the plate-like base portion 10C and the support portion 20C having a hollow portion are integrally formed of an extruded aluminum member, the base metal fitting 30C is hollow. Since it can be formed into a shape, the weight can be reduced, and its manufacture is easier and less expensive than forming by casting. Further, since there is no need to connect the base portion 10C and the support portion 20C, the portion for connection can be omitted, and the material can be reduced.

  Further, according to the base metal fitting 30C, one side piece of the support portion 20C, that is, the side piece 26 located on the inner side of the installation place 3 is the other, that is, the side piece located on the outer side of the road fence installation place 3. 27, and the top portions of both side pieces 26, 27 are connected by inclined connecting pieces 28. Therefore, a support portion when a horizontal load P is applied to the column 2 where the side pieces 26 formed higher are positioned. The reaction forces PH and PL applied to the support column 2 from 20C can be reduced compared to the case where the reaction pieces PH and PL have the same height as the side piece 27. For this reason, the burden to the lower end part of the support | pillar which becomes weak especially especially becomes small.

  Further, according to the base metal fitting 30C, since the two reinforcing pieces 29 connected in an inclined manner between the both side pieces 26 and 27 of the support portion 20C constitute a truss, the support portion 20C received a bending moment. The deformation at the time can be reduced, and the base metal fitting 30C can be given strength.

<Third Embodiment>
FIG. 14: is sectional drawing which is a case where the road fence which concerns on this invention is applied to a sidewalk fence, Comprising: When the cross-sectional dimension of a support | pillar changes, it is sectional drawing which shows the attachment state of 3rd Embodiment. In general, in the sidewalk fence, the external dimensions of the support column 2 may be larger than the design surface, but even in this case, the planned horizontal load P does not change. The plate thickness of 2 is reduced.

  The third embodiment is a case where the upright of the support column 2 is strengthened by interposing a spacer 50 in the gap 40 between the side piece 22 of the support portion 20 of the base metal fitting 30 and the inner wall surface of the support column 2. In this case, the spacer 50 is formed of an aluminum plate-like extruded shape longer than the height of the support portion 20 of the base metal fitting 30. If a plurality of types of spacers 50 having different thicknesses are prepared, an optimum spacer can be used according to the size of the gap 40. Further, a plurality of spacers 50 may be interposed in the gap 40.

  In this embodiment, the mounting bolt 8 that fixes the support column 2 and the base metal fitting 30 is attached to the side to which the main load P is applied (the right side in the figure) in order to fix the spacer 50 together.

  In this way, by interposing the spacer 50 in the gap 40 between the side piece 22 of the support portion 20 of the base metal 30 and the inner wall surface of the support 2, the support 2 having different inner dimensions can be stabilized by one type of base metal 30. It can be supported in the state. In this case, the height of the spacer 50 is higher than the height of the support portion 20 for the following reason.

  That is, when the load P is applied, the reaction force PH from the upper end of the spacer of the base metal fitting 30 and the reaction force PL from the lower end of the side piece 21 are applied as reaction forces. Acting on the upper end of the spacer 50 and the lower end of the wall 1b of the column 2. If the reaction loads PH and PL exceed the limit load of the walls 1a and 1b of the support column 2, damage to the support column 2 will occur. However, when the same load P is applied, the height of the spacer 50 is increased to increase the mechanical strength. However, reaction forces PH and PL become smaller. For this reason, it is effective to increase the height of the spacer 50 in the case of the pillar 2 having a large outer shape which is thinned.

  In FIG. 14, the case where the base metal fitting 30 is formed in the same manner as in the first embodiment has been described. However, in the base metal fitting 30A having the support portion 20A or the base metal fitting 30C in the second embodiment, the spacer 50 The support column 2 can be erected with the interposition.

  Further, in FIG. 14, the position of the mounting hole 13 is shifted to the left in the drawing and the position of the column 2 is positioned at the center. However, the position of the mounting hole 13 is positioned at the center as in the case of the column having a small outer shape. Thus, the position of the column 2 may be located on the right side in the figure. In this way, the same base metal fitting 30A can be used in common.

  In the third embodiment, the other parts are the same as those in the first embodiment. Therefore, the same parts are denoted by the same reference numerals and description thereof is omitted.

<Other embodiments>
In the said 1st Embodiment, after forming the support parts 20 and 20A and the base part 10 with a separate aluminum extrusion shape, it demonstrated the case where it connects with the connection bolt 5, but as shown in FIG. For example, after the support portion 20A of the first embodiment and the plate-like base portion 10D are formed by the aluminum extruded profile 30b as in the second embodiment, the support portion 20A is formed at the center of the base portion 10C by cutting. May be erected integrally to form the base metal fitting 30D. Here, the case where the support portion 20A and the base portion 10C are integrated is illustrated, but the support portion 20 and the base portion 10C of the first embodiment may be integrally formed.

It is a schematic perspective view which shows an example of the use condition which utilized the fence for roads concerning this invention for the handrail. It is sectional drawing which shows the attachment state of 1st Embodiment of the said handrail. It is a perspective view which shows the base metal fitting in 1st Embodiment. It is a front view which shows the base metal fitting in 1st Embodiment. It is a perspective view which shows the state which cut | disconnects the extrusion shape material which forms the base part of 1st Embodiment, and forms a base part. It is a perspective view which shows the state which cut | disconnects the extrusion shape material which forms the support part of 1st Embodiment, and forms a support part. It is a perspective view which shows the base metal fitting which shows the modification of the support part in 1st Embodiment. It is a front view of the said base metal fitting. The front view (a) which shows the base metal fitting which provided the ditch | groove in the base part in 1st Embodiment, and provided the ditch | groove which has an expansion taper surface in a base part, and the base metal fitting which made the head of the connecting bolt the dish shape. It is a front view (b) shown. It is sectional drawing which shows the attachment state of 2nd Embodiment of the fence for roads concerning this invention. It is a perspective view which shows the base metal fitting in 2nd Embodiment. It is a front view which shows the base metal fitting in 2nd Embodiment. It is a perspective view which shows the state which cuts the extrusion shape material which forms the base metal fitting in 2nd Embodiment, and forms a base metal fitting. It is sectional drawing which shows the attachment state of 3rd Embodiment of the fence for roads concerning this invention. It is a perspective view which shows the state which cuts the extruded profile which forms the modification of the base metal fitting in this invention, and forms a base metal fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Road fence 2 Support | pillar 2a Hollow part 3 Road fence installation location 3a Ground cover 4 Anchor bolt 5, 5A Connection bolt 5a Head 5b Dish head 10, 10A, 10C, 10D Base part 10a Extruded material 11 Concave Place 14 Concave groove 15 Countersunk hole 20, 20A, 20C Support part 20a Extruded profile 21, 22 Side piece 23 Upper end reinforcing piece 23
24, 24A Reinforcing pieces 26, 27 Side pieces 28 Inclined pieces 29 Reinforcing pieces 30, 30A, 30C, 30D Base metal fittings 30a, 30b Extruded profile 40 Clearance 50 Spacer

Claims (11)

A strut made of a hollow member constituting a road fence, a base portion fixed to the ground with an anchor bolt, and a support portion standing on the base portion and inserted into the hollow portion at the lower end of the strut A base bracket made of
The support portion has a pair of opposing side pieces formed in parallel and a reinforcing piece for connecting the two side pieces,
A road fence characterized in that the base portion and the support portion are formed of an aluminum extruded profile. In the road fence according to claim 1,
The road fence characterized by the upper end of a pair of side piece which comprises a support part being connected by the reinforcement piece, and forming the hollow part. In the road fence according to claim 1 or 2,
A road fence characterized in that the base portion and the support portion are connected by a connecting bolt. In the road fence according to claim 3,
The above-mentioned base part is formed in the cross-sectional substantially channel shape which has the recess which can accommodate the head of a connecting bolt in the lower surface, The fence for roads characterized by the above-mentioned. In the road fence according to claim 3,
The above-mentioned base part is formed with a plurality of concave grooves that can accommodate the heads of the connecting bolts on the lower surface thereof. In the road fence according to claim 3,
A road fence, wherein a countersink is formed in the lower surface of the base part, and a head portion of the connecting bolt is formed in a dish shape. In the road fence according to claim 1 or 2,
The road fence, wherein the base portion and the support portion are formed of an aluminum extruded profile, and the support portion is erected at the center of the base portion by cutting. The road fence according to any one of claims 1 to 7,
One side piece of the said support part is formed higher than the other side piece, It connects with the connection piece which the top part of both sides piece inclines, The fence for roads characterized by the above-mentioned. The road fence according to any one of claims 1 to 8,
A road fence characterized in that the reinforcing piece of the support portion constitutes a truss. In the road fence in any one of Claim 1 thru | or 9,
A road fence, wherein a spacer is interposed in a gap between the support column and the support when the cross-sectional shape of the support column is large and the hollow portion is large. The road fence according to claim 10,
The above-mentioned spacer is interposed on the side where a main load acts on the road fence, and the height thereof is higher than the support portion.

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