JPH02120436A - Rigid frame structure for wooden three-storied building - Google Patents

Abstract

PURPOSE:To provide a roomy space by installing floor beams in parallel with the floor levels of the second and the third stories in the direction of the span of a rigid frame structure that is formed of a pair of the oppositely placed assembled construction members with the tops of their curved members bonded each other, and with the lower ends of their leg members fixed to footings. CONSTITUTION:Curved members 2 of a pair of assembled curved construction members 1 are placed facing each other with their tops 3 bonded each other and with the lower ends of their leg members 4 fixed to footings 5, and a rigid frame structure 6 is formed thereby. Further, floor beams 7 are installed in the direction of the span of the rigid frame structure 6 and in parallel respectively with floor levels of the second and the third stories.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a rigid frame structure for a three-story wooden building.

(Prior Art) Three-story wooden buildings are not permitted by the Building Standards Act, and as a matter of course, rigid frame structures for use therein have not been developed.

(Problems to be Solved by the Invention) When constructing a three-story wooden building using normal load-bearing wall methods such as bracing, it is impossible to secure a large living space without walls. The present invention aims to provide a rigid frame structure suitable for ensuring a large living space on each floor by eliminating the need for load-bearing walls in the span direction of each floor.

(Means for Solving the Problems) The present invention configures a rigid frame structure by arranging the curved portions of a pair of laminated timber for curved structures to face each other, tightly connecting both top portions, and fixing the lower ends of each leg to the foundation. , is characterized in that floor beams made of structural laminated wood are installed parallel to each other in the span direction of this rigid frame structure and at the floor levels of the second and third floors.

For fastening with bolts and nuts on both tops, an abutment surface is formed on the end face of each top, and bolt holes are opened and penetrated through the abutment surface and the outer surface, respectively. Then, the shear plate is placed concentrically with the bolt hole and the two abutting surfaces are butted, and a bolt is inserted through the bolt hole and the shear plate and tightened with a nut. Since the outer surface is sloped, a step may be provided to provide a seat for a bolt, nut or washer.

Use column base hardware to secure the legs and foundation. This column base hardware is composed of a U-shaped part and a base part, and this base part is parallel to the bottom of the U-shaped part and is suspended between both upright parts with a distance maintained between the bottom part and the bottom part. . This platform is buried in the foundation so that it matches the top surface of the foundation. The lower end of the leg is inserted between the two upright parts, and the lower end surface thereof is placed on the upper surface of the base. Then, tighten the bolts with nuts inserted through the bolt holes in both the legs and the legs. In this way, the legs and the foundation are fixed.

The floor beam is made up of a pair of structural laminated timber beam members. A piece of laminated timber for curved structures is sandwiched between each end of the beam member, and bolts are inserted into bolt holes coaxially penetrated through the floor beam and the laminated timber for curved structures and tightened with nuts. At this time, a shear plate is arranged concentrically with this bolt hole on the joint surface of the curved laminated timber and each beam member, and the bolt also passes through this shear plate. In this way, the floor beam is attached to the rigid frame structure. A washer is interposed between the floor beam and the bolt or nut.

(Function) The curved parts of the pair of laminated timber for curved structures face each other and are tied together at both tops, so they form a rigid frame structure, and the lower ends of each leg of this rigid frame structure are fixed to the foundation. Ru.

Therefore, this rigid frame structure can sufficiently resist the load in the span direction. This Ramen structure is divided into three levels, upper and lower, by floor beams on the second and third floors. Since the rigid frame structure resists the load in the span direction by itself, there is no need to install braced load-bearing walls between the spans. Therefore, this floor beam only needs to support the floor material placed over it and various amounts of vertical loads placed on this floor material.

When constructing a building, two or more sets of these Ramen structures should be used. Adjacent rigid frame structures are arranged opposite to each other. These rigid frame structures may be arranged on the same straight line or on a continuous curve E, and the mutual spacing may be freely determined. Thick plate roofs and wall materials are installed between the curved laminated timbers of the opposing rigid frame structures, and thick plate floors are also installed between the floor beams to integrate both curved structural laminated timbers. become - The floor part may be used as a garage or warehouse, or it may be used as a living room by laying floorboards.

By forming an abutting surface on the top end face of each laminated timber for curved structure, abutting each other on this abutting surface, and interposing a shear plate to tightly connect the tops of bolts and levers, it is possible to form laminated timber for both curved structures. The materials come into surface contact through the shear plate and can be firmly tightened, providing stronger resistance to loads in the span direction.

Column base metal fittings with a U-shaped part and a base are used to fix the legs of the laminated timber for curved structures and the foundation.The bottom of the U-shaped part is buried in the foundation, and the lower end of the leg is attached to the bottom of the U-shaped part. It is fitted between both the upright chamber parts, its lower end surface is placed on the upper surface of the base part, and the bolt is passed through both the upright parts and the leg part and tightened with a nut. In this way, the load of the rigid frame structure is transmitted evenly to the foundation through the entire surface of the platform, and the load in the span direction due to wind pressure etc. is resisted by the buried part of the U-shaped part and the bolts, and the load in the direction perpendicular to the span direction is resisted. The building is stable because the load is resisted by the buried parts and the upright parts.

The floor beam is made into a joint beam, and the curved structural laminated wood is sandwiched between the shear plates at both ends. Bolts are inserted into the bolt holes of the floor beam, the curved structural laminated wood, and the shear plate, and tightened with nuts. Since there is a shear plate between the floor beam and the laminated timber for curved structures, firm tightening can withstand force, and the floor beam is stable and the laminated timber for curved structures can be installed with ease. Therefore, a large load can be applied to this floor beam.

(Example) 1 is a pair of curved structural laminated timbers, 2 is a curved portion thereof, 3 is a top portion, and 4 is a leg portion. Both laminated timbers 1, l have a curved portion 2.
2 are placed opposite each other, the top part 3.3 is tightened, and the lower end of the leg part 4.4 is fixed to the base 5 to form a rigid frame structure 6. 7
．． 7 is a floor beam made of structural laminated wood for partitioning the rigid frame structure 6 into three upper and lower layers. These floor beams 7.7 are attached to the rigid frame structure 6, parallel to each other, in the span direction of the rigid frame structure 6, and at the floor level of the second and third floors, respectively. In this way, a rigid frame structure for a three-story wooden building is constructed.

As shown in FIG. 2, an abutment surface 21 is formed on the end surface of each apex 3, and both abutment surfaces 21.21 are abutted through a shear plate 22.22, and both apex portions 3.3 and the shear plate 22.22 are abutted. Bolt hole 23.23 passing through
By inserting a bolt 25 through 24 and 24 and tightening it with a nut 26, both top portions 3.3 are joined together. Note that 27 is a stepped portion and 28 is a washer.

As shown in FIG. 3, a column base metal fitting 31 is interposed at the portion where the lower end of the leg portion 4 rests on the foundation 5.

This hardware has a U-shaped part 35 with a bolt hole 34 for a bolt 33 in an upright part 32, 32 having an interval that matches the thickness of the leg part 4, and a U-shaped part 35 that is parallel to the bottom part 36 of this U-shaped part. In addition, it has a base part 37 which is mounted between the two upright parts 32 and 32 with a distance maintained between the base part 36 and the bottom part 36. This bottom 36 is the foundation 5
The base portion 37 is made to coincide with the upper surface of the base 1II5. The lower end portion of the leg portion 4 is fitted between the two upright portions 32, 32, and the lower end surface is placed on the upper surface of the base portion 36. and bolt 33
pass through one bolt hole 34 of the upright part 32, through the bolt hole 38 of the leg part 4, and then through the bolt hole 3 of the other upright part 32.
The leg portion 4 and the base 5 are fixed by screwing a nut 39 through the leg portion 4 to the other end and tightening the nut 39.

As shown in FIG. 4, the floor beams 7 are laminated beams each consisting of a pair of beam members 41, 41 made of structural laminated timber.

A shear plate 4 is provided between each end of the beam members 41 and 41, respectively.
2.42, insert the bolt 45 into the bolt holes 43 and 44 passing through the curved laminated timber 1 and the shear plate 42.42, and then tighten the nut 4.
6, and the floor beam 7 is mounted on the rigid frame structure 6.

(Effects of the Invention) Since the present invention has a rigid frame structure, it can be applied to three-story wooden buildings, and moreover, the interior side in the span direction, which was conventionally essential even in three-story wooden buildings. It is possible to omit load-bearing walls even in a three-story building, and it is possible to provide a large space with just one floor, making it effective for application to buildings such as stores and offices.

According to claim (2) of the present invention, the top parts of the curved laminated timber for a curved structure can be tied to each other, and a large load in the span direction can be sufficiently resisted, and the binding work can be performed easily.

According to claim (3), the legs and the foundation can be securely fixed, and the resistance force against wind pressure etc. can be effectively exerted.

According to claim (4), it is possible to easily and reliably attach the floor beam to the laminated timber for curved structures.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a rigid frame structure for a three-story wooden building according to the present invention, and FIGS. 2, 3, and 11 are sections A, B, and 0 of FIG. 1, respectively. FIG. 5 is a front view showing another aspect of the present invention. 1... Glulam for curved structure, 2... Curved part, 3...
Top, 4... Legs, 5... Foundation, 6... Ramen structure, 7... Floor beam, 21... Butt surface, 22...
... Shear plate, 23.24 ... Bolt hole, 25.
...Bolt, 26...Nut, 27...Step, 28
... washer, 31... column base hardware, 32... standing part,
33... Bolt, 34... Bolt hole, 35... U-shaped part, 36... Bottom part, 37... Base part, 38...
Bolt hole, 39... Nut, 41... Beam member, 42
... Shear plate, 43.44 ... Bolt hole, 45
...Bolt, 46...Natsuto. Patent Applicant: Nobu Yoshitoshi Arai Architectural Materials Research Co., Ltd.

Claims (4)

[Claims] (1) A rigid-frame structure is constructed by arranging the curved parts of a pair of laminated timber for curved structures to face each other, tightening the tops, and fixing the lower ends of each leg to the foundation. A rigid frame structure for a three-story wooden building characterized by having floor beams made of structural laminated wood installed parallel to each other at the floor levels of the second and third floors. (2) A butting surface is formed on the end face of each top, the butting surfaces are butted through a shear plate, and a bolt is inserted into a bolt hole passing through both tops and the shear plate,
A rigid frame structure for a three-story wooden building according to claim (1), wherein both top portions are fastened together by tightening nuts. (3) A column base metal fitting is installed in the part where the lower end of each leg rests on the foundation. It has a U-shaped part and a pedestal part that is mounted between both upright parts parallel to the bottom of the U-shaped part and with a distance between the bottom part, and this pedestal part is aligned with the top surface of the foundation. bury the bottom part in this foundation, insert the lower end of the leg between the two upright parts, place the lower end surface on the top surface of this base, insert the bolt into the bolt hole of both the upright part and the leg, and tighten the nut. A rigid frame structure for a three-story wooden building according to claim (1), wherein the legs and the foundation are fixed by tightening the legs. (4) A floor beam is a laminated beam consisting of a pair of structural laminated timber beam members, with curved structural laminated timber sandwiched between each end with a shear plate interposed between the floor beam, curved structural laminated timber, and shear plate. A rigid frame structure for a three-story wooden building according to claim 1, wherein the floor beam is attached to the rigid frame structure by inserting a bolt into a bolt hole passing through the frame and tightening it with a nut.