Building frame structure

Abstract

To improve pull-out resistance of joints of tube columns forming a frame structure together with upper and lower steel beams in which load-bearing walls are incorporated, to the upper and lower steel beams so as to ensure sufficient earthquake resistance.SOLUTION: A building frame structure is provided with: upper and lower steel beams 2, 3; a pair of tube columns 4, 5 provided between the upper and lower steel beams 2, 3; and a load-bearing wall section 10 disposed inside a frame 1 comprising the upper and lower steel beams 2, 3 and the pair of tube columns 4, 5 and fixed to the upper steel beam 2 at its upper end and fixed to the lower steel beam 3 at its lower end. The upper and lower steel beams 2, 3 and the pair of tube columns 4, 5 are each connected by a frame connection member 6 provided across the steel beams 2, 3 and the tube columns 4, 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building skeleton structure. [Background technology]

[0002] In the past, buildings were provided with bearing walls to meet the required wall volume to resist horizontal loads during earthquakes and typhoons. Such bearing walls are constructed, for example, by placing braces across the opening between adjacent columns, or by attaching structural plywood to cover the entire opening between adjacent columns. In addition, walls with vibration-damping devices built in may be called vibration-damping bearing walls. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-156249 A [Patent Document 2] Patent Publication No. 2021-028453 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a demand for a decarbonized society through the promotion of carbon neutrality, which reduces carbon dioxide emissions to virtually zero, and for the achievement of the SDGs (Sustainable Development Goals), and in the construction industry, efforts are being made to build buildings using wood, which has low carbon dioxide emissions. Therefore, when constructing buildings, there is a demand for technology that can increase the amount of wood used as much as possible or reduce the amount of steel used. On the other hand, steel materials are also used in buildings that require structural strength, such as mid- to high-rise wooden buildings. In particular, when conventional load-bearing walls are incorporated, the beams located above and below the load-bearing walls are made of steel materials in order to effectively utilize their functions, and the upper and lower ends of the load-bearing walls are firmly fixed to these steel beams above and below. However, if the shear wall is firmly fixed to the upper and lower steel beams, when a horizontal load is applied during an earthquake or a typhoon, a large pulling force acts on the joint of the pipe column forming the structure together with the upper and lower steel beams, making it difficult to ensure sufficient seismic resistance.

[0005] The present invention has been made in view of the above circumstances, and aims to improve the pulling resistance of the joints of the pipe columns forming the structure together with the upper and lower steel beams incorporating the shear wall, and to ensure sufficient seismic resistance.

Means for Solving the Problems

[0006] The invention according to claim 1 is, for example, as shown in FIGS. 1 to 6, a building frame structure, upper and lower steel beams 2, 3, a pair of pipe columns 4, 5·40, 50 provided between the upper and lower steel beams 2, 3, a shear wall portion 10 disposed inside the frame 1 composed of the upper and lower steel beams 2, 3 and the pair of pipe columns 4, 5·40, 50, and having an upper end fixed to the upper steel beam 2 and a lower end fixed to the lower steel beam 3, each of the upper and lower steel beams 2, 3 and the pair of pipe columns 4, 5·40, 50 is characterized by being connected by a frame connection member 6·60 provided across between the steel beams 2, 3 and the pipe columns 4, 5·40, 50.

[0007] According to the invention described in claim 1, each of the upper and lower steel beams 2, 3 and the pair of pipe columns 4, 5·40, 50 is connected by a frame connection member 6·60 provided across between the steel beams 2, 3 and the pipe columns 4, 5·40, 50, so that the steel beams 2, 3 and the pipe columns 4, 5·40, 50 can be firmly connected by the frame connection member 6·60. Inside the structure 1 composed of the upper and lower steel beams 2 and 3 and the pair of pipe columns 4, 5, 40, and 50, a shear wall portion 10 is arranged. The upper end portion of the shear wall portion 10 is fixed to the upper steel beam 2, and the lower end portion is fixed to the lower steel beam 3. Therefore, when a horizontal load is applied to the building body, the shear wall portion 10 attempts to suppress the deformation of the structure 1, and the force acting on the shear wall portion 10 at that time can be transmitted through the upper and lower steel beams 2 and 3 to the pair of pipe columns 4, 5, 40, and 50 that are firmly connected to the upper and lower steel beams 2 and 3 by the structure connecting members 6 and 60. As a result, the horizontal load applied to the building body can be effectively dispersed, so that the building body can ensure sufficient seismic resistance.

[0008] The invention according to claim 2 is, for example, as shown in FIGS. 1 to 3 and FIG. 6, in the building body structure according to claim 1, The upper and lower steel beams 2 and 3 are shaped steel materials having webs 2a and 3a and flanges 2b and 3b in contact with the pair of pipe columns 4 and 5. The pair of pipe columns 4 and 5 are made of wood. The structure connecting member 6 A steel bar 6a inserted into each of a plurality of insertion holes 4b and 5b formed in the upper and lower end faces of the pipe columns 4 and 5, An adhesive layer composed of an adhesive filled between the insertion holes 4b and 5b and the steel bar 6a, And nuts 6b provided at the tip portions of the steel bar 6a protruding from the upper and lower end faces of the pipe columns 4 and 5. In the flanges 2b and 3b of the upper and lower steel beams 2 and 3, a plurality of through holes are formed through which the tip portions of the plurality of steel bars 6a inserted into the plurality of insertion holes 4b and 5b are inserted. The nut 6b is provided at the tip portion of the steel bar 6a inserted through each of the plurality of through holes.

[0009] According to the invention described in claim 2, the structural connecting member 6 includes steel bars 6a inserted into respective insertion holes 4b and 5b formed in the upper and lower end faces of the pipe columns 4 and 5, an adhesive layer composed of an adhesive filled between the insertion holes 4b and 5b and the steel bars 6a, and nuts 6b provided at the tip portions of the steel bars 6a protruding from the upper and lower end faces of the pipe columns 4 and 5. Therefore, the plurality of steel bars 6a are embedded in the upper and lower end faces of the pipe columns 4 and 5 and joined and fixed by the adhesive so that their tip portions protrude from the upper and lower end faces of the pipe columns 4 and 5. That is, due to the curing of the adhesive filled between the insertion holes 4b and 5b and the steel bars 6a, stress can be transmitted via the adhesive force of the adhesive and the steel bars 6a, and joint strength can be generated. As a result, the pipe columns 4 and 5 and the steel bars 6a can be firmly joined and fixed, so that the pull-out resistance of the pipe columns 4 and 5 can be improved. And since the tip portions of the plurality of steel bars 6a firmly joined and fixed to the pipe columns 4 and 5 are inserted into a plurality of through holes formed in the flanges 2b and 3b of the upper and lower steel beams 2 and 3, and nuts 6b are provided at their tip portions, the pipe columns 4 and 5 can be securely and firmly fastened to the upper and lower steel beams 2 and 3. As a result, each of the upper and lower steel beams 2 and 3 and the pair of pipe columns 4 and 5 are firmly connected by the structural connecting member 6 provided across between the steel beams 2 and 3 and the pipe columns 4 and 5, which can contribute to ensuring sufficient earthquake resistance.

[0010] The invention described in claim 3 is, for example, as shown in FIGS. 1, 2, and 6, in the building frame structure described in claim 2, steel first reinforcing caps 7 are covered and fixed to the upper and lower ends of the pipe columns 4 and 5, each of the upper and lower first reinforcing caps 7, has a flat plate portion 7a in contact with the end face of the pipe column 4 or 5, and a side wall portion 7b provided along the outer peripheral edge portion of the flat plate portion 7a and integrally formed with the flat plate portion 7a and in contact with the side surface of the pipe column 4 or 5, and is characterized in that a plurality of through holes 7c through which the tip portions of the plurality of steel bars 6a are inserted are formed in the flat plate portion 7a.

[0011] According to the invention described in claim 3, the first reinforcing cap 7 has a flat plate portion 7a that contacts the end faces of the pipe columns 4 and 5, and a side wall portion 7b that is provided along the outer peripheral edge portion of the flat plate portion 7a and is integrally formed with the flat plate portion 7a and contacts the side surfaces of the pipe columns 4 and 5. Since a plurality of through holes 7c through which the tip ends of the plurality of steel bars 6a are inserted are formed in the flat plate portion 7a, the first reinforcing cap 7 can be placed on and fixed to the upper and lower ends of the pipe columns 4 and 5 with the plurality of steel bars 6a protruding from the upper and lower end faces of the pipe columns 4 and 5. And, since the side wall portion 7b that is integrally formed with the flat plate portion 7a and contacts the side surfaces of the pipe columns 4 and 5 can cover the upper and lower ends of the pipe columns 4 and 5 from the outside, when a large pulling force acts on the upper and lower ends of the pipe columns 4 and 5, it is possible to suppress the occurrence of tearing at the upper and lower ends of the pipe columns 4 and 5, contributing to ensuring sufficient seismic resistance.

[0012] The invention described in claim 4 is, for example, as shown in FIGS. 4 and 5, in the building frame structure described in claim 1, the upper and lower steel beams 2 and 3 are shaped steel materials having webs 2a and 3a and flanges 2b and 3b that contact the pair of pipe columns 40 and 50, the pair of pipe columns 40 and 50 are made of steel and have a column main body and base plates 41 and 51 that are joined to the upper and lower end faces of the column main body and contact the flanges 2b and 3b, the frame connecting member 60 is bolts and nuts, a plurality of through holes through which the plurality of bolts are inserted are respectively formed in both the flanges 2b and 3b of the upper and lower steel beams 2 and 3 and the base plates 41 and 51 of the pair of pipe columns 40 and 50, and the nuts are provided at the tip ends of the bolts inserted through each of the plurality of through holes in both the flanges 2b and 3b and the base plates 41 and 51.

[0013] According to the invention described in claim 4, a plurality of through holes through which a plurality of bolts are inserted are respectively formed in the flanges 2b and 3b of the upper and lower steel beams 2 and 3 and in the base plates 41 and 51 of the pair of pipe columns 40 and 50. Since the nuts are provided at the tip ends of the bolts inserted through each of the plurality of through holes in both the flanges 2b and 3b and the base plates 41 and 51, the pipe columns 40 and 50 can be securely and firmly bolted to the upper and lower steel beams 2 and 3. As a result, each of the upper and lower steel beams 2 and 3 and the pair of pipe columns 40 and 50 is firmly connected by the structural connecting member 60 provided across between the steel beams 2 and 3 and the pipe columns 40 and 50, which can contribute to ensuring sufficient earthquake resistance.

[0014] The invention described in claim 5 is, for example, as shown in FIGS. 1 to 6, in the building frame structure according to any one of claims 2 to 4, the shear wall portion 10 has a pair of wooden side members 11 formed in a columnar shape, a shear wall main body (12, 20) provided between the pair of side members 11 and joined to the pair of side members 11, and a steel second reinforcing cap 15 that is placed and fixed on the upper and lower end portions of the pair of side members 11 and the shear wall main body, wherein each of the upper and lower second reinforcing caps 15 has a flat plate portion 15a that contacts the end faces of the pair of side members 11 and the end face of the shear wall main body, and a side wall portion 15b that is provided along the outer peripheral edge portion of the flat plate portion 15a and is integrally formed with the flat plate portion 15a and contacts the side faces of the pair of side members 11 and the shear wall main body.

[0015] According to the invention described in claim 5, the shear wall portion 10 has a pair of columnar wooden side members 11, a shear wall main body provided between the pair of side members 11 and joined to the pair of side members 11, and a steel second reinforcing cap 15 that is covered and fixed to the upper and lower end portions of the pair of side members 11 and the shear wall main body. Therefore, the second reinforcing cap 15 can enhance the integrity of the pair of side members 11 and the shear wall main body. In particular, the second reinforcing cap 15 has a flat plate portion 15a that contacts the end faces of the pair of side members 11 and the end face of the shear wall main body, and a side wall portion 15b that is provided along the outer peripheral edge portion of the flat plate portion 15a and is integrally formed with the flat plate portion 15a and contacts the side surfaces of the pair of side members 11 and the shear wall main body. Therefore, the side wall portion 15b can cover the upper and lower end portions of the pair of side members 11 and the shear wall main body from the outside. Thereby, when a large force acts on the shear wall portion 10, splitting of the upper and lower end portions of the pair of side members 11 can be suppressed, and separation of the pair of side members 11 and the shear wall main body can be suppressed, contributing to ensuring sufficient seismic resistance.

[0016] The invention described in claim 6 is, for example, as shown in FIGS. 1 to 4, in the building frame structure described in claim 5, each of the upper and lower steel beams 2, 3 and the pair of side members 11 in the shear wall portion 10 is connected by a wall connection member 13 provided across between the steel beams 2, 3 and the side members 11, the wall connection member 13 has a steel bar 13a inserted into each of a plurality of insertion holes 11a formed in the upper and lower end faces of the side member 11, an adhesive layer made of an adhesive filled between the insertion hole 11a and the steel bar 13a, and nuts 13b provided at the tip portions of the steel bars 13a protruding from the upper and lower end faces of the side member 11. In the flanges 2b, 3b of the upper and lower steel beams 2, 3, a plurality of through holes are formed through which the tip portions of the plurality of steel bars 13a inserted into the plurality of insertion holes 11a are inserted. A plurality of through holes 15c through which the tip portions of the plurality of steel bars 13a are inserted are formed in the flat plate portion 15a of the second reinforcing cap 15. The nut 13b is provided at the tip of the steel bar 13a inserted through each of the plurality of through holes 15c in both the flange 2b, 3b and the flat plate portion 15a.

[0017] According to the invention described in claim 6, the wall connecting member 13 includes a steel bar 13a inserted into each of a plurality of insertion holes 11a formed in the upper and lower end faces of the side member 11, an adhesive layer composed of an adhesive filled between the insertion hole 11a and the steel bar 13a, and a nut 13b provided at the tip of the steel bar 13a protruding from the upper and lower end faces of the side member 11. Therefore, the plurality of steel bars 13a are embedded in the upper and lower end faces of the pair of side members 11 and joined and fixed by an adhesive so that their tip portions protrude from the upper and lower end faces of the pair of side members 11. That is, by the curing of the adhesive filled between the insertion hole 11a and the steel bar 13a, stress can be transmitted through the adhesive force of the adhesive and the steel bar 13a to generate joint strength. Thereby, since the side member 11 and the steel bar 13a can be firmly joined and fixed, the pull-out resistance of the pair of side members 11 is improved. In addition, since a plurality of through holes 15c through which the tip portions of the plurality of steel bars 13a are inserted are formed in the flat plate portion 15a of the second reinforcing cap 15, the second reinforcing cap 15 can be placed and fixed on the upper and lower ends of the pair of side members 11 and the shear wall body with the plurality of steel bars 13a protruding from the upper and lower end faces of the pair of side members 11. And the tip portions of the plurality of steel bars 13a firmly joined and fixed to the pair of side members 11 are inserted into a plurality of through holes formed in the flanges 2b, 3b of the upper and lower steel beams 2, 3, and the nut 13b is provided at the tip portion thereof. Therefore, the pair of side members 11 can be securely and firmly fastened to the upper and lower steel beams 2, 3. As a result, the upper and lower steel beams 2, 3 and the shear wall portion 10 are firmly connected by the wall connecting member 13 provided across between the steel beams 2, 3 and the pair of side members 11, which can contribute to ensuring sufficient seismic resistance.

[0018] The invention according to claim 7 is, for example, as shown in FIGS. 1 to 3, in the building frame structure according to claim 6, the shear wall main body is characterized in that it is constituted by a wooden building panel 12 provided vertically between the pair of side members 11.

[0019] According to the invention of claim 7, since the shear wall main body is constituted by the wooden building panel 12 provided vertically between the pair of side members 11, it can be easily joined to the pair of wooden side members 11. Further, since the wooden building panel 12 is used in construction, it has a certain degree of strength even by itself, and since the shear wall main body is constituted by such a wooden building panel 12, the strength of the shear wall portion 10 incorporating such a shear wall main body is also improved. As a result, when a horizontal load is applied to the building frame, it becomes easier to suppress the deformation of the frame 1 by the shear wall portion 10.

[0020] The invention according to claim 8 is, for example, as shown in FIGS. 4 and 5, in the building frame structure according to claim 6, the shear wall main body is upper and lower frame members 16 and 17 provided across the upper end portions and the lower end portions of the pair of side members 11, and a vibration damping device 20 having vibration damping means and disposed inside a rectangular frame formed by the pair of side members 11 and the upper and lower frame members 16 and 17, the vibration damping device 20 is characterized in that it is joined to the pair of side members 11 and the upper and lower frame members 16 and 17.

[0021] According to the invention described in claim 8, the shear wall body has upper and lower frame members 16 and 17 provided across the upper ends and lower ends of the pair of side members 11, and a vibration damping device 20 having vibration damping means, which is arranged inside the rectangular frame formed by the pair of side members 11 and the upper and lower frame members 16 and 17. Since the vibration damping device 20 is joined to the pair of side members 11 and the upper and lower frame members 16 and 17, for example, when a horizontal load is applied to the building structure and the rectangular frame formed by the pair of side members 11 and the upper and lower frame members 16 and 17 is about to deform due to vibration, the vibration can be attenuated by the vibration damping device 20, and as a result, the deformation of the structure 1 can be suppressed.

[0022] The invention described in claim 9 is, for example, as shown in FIG. 6, in the building structure described in claim 5, the shear wall portion 10 is further provided with a damper device 30 having vibration damping means, which is provided between the second reinforcing cap 15 covering and fixed to the upper ends of the pair of side members 11 and the shear wall body and the upper steel beam 2.

[0023] According to the invention described in claim 9, the shear wall portion 10 is provided between the second reinforcing cap 15 covering and fixed to the upper ends of the pair of side members 11 and the shear wall body and the upper steel beam 2, and further has a damper device 30 having vibration damping means. Therefore, for example, when a horizontal load is applied to the building structure and the structure 1 is about to deform due to vibration, the vibration can be attenuated by the damper device 30 provided at the upper end of the shear wall portion 10.

Effect of the Invention

[0024] According to the present invention, it is possible to improve the pull-out resistance of the joint of the pipe column forming the structure together with the upper and lower steel beams in which the shear wall is incorporated with respect to the upper and lower steel beams, and to ensure sufficient seismic resistance.

Brief Description of the Drawings

[0025]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying out the Invention

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, although various technically preferable limitations are imposed on the embodiments described below for carrying out the present invention, the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Note that the directions in the following embodiments and illustrated examples are set only for the convenience of explanation.

[0027] In FIG. 1, reference numeral 1 indicates a framework. This framework 1 constitutes the body of a wooden building by being continuously provided in the horizontal direction and the height direction. Such a framework 1 is composed of an upper steel beam 2, a lower steel beam 3, a left pipe column 4, and a right pipe column 5. These upper and lower steel beams 2, 3 and the pair of left and right pipe columns 4, 5 are connected by a framework connecting member 6 provided across between the steel beams 2, 3 and the pipe columns 4, 5. More specifically, the body of the wooden building is configured such that the left and right pipe columns 4, 5 are erected on the upper surface of the lower steel beam 3, and the upper steel beam 2 is spanned between the upper end portions of these left and right pipe columns 4, 5. Although not shown, the lower steel beam 3 on the first floor is placed on the upper surface of the foundation and fixed to anchor bolts protruding from the upper surface of the foundation. Note that the wooden building in this embodiment refers to, for example, a mid-rise wooden building, but is not limited thereto, and may be a low-rise building or a high-rise building. Also, in this embodiment, the wooden building is assumed to refer to a relatively large-scale building, but may also be a small-scale building.

[0028] The upper steel beam 2 is composed of so-called shaped steel. In this embodiment, it is assumed to be composed of H-shaped steel, but it may also be I-shaped steel or channel steel. Such a shaped steel upper steel beam 2 includes a web 2a, upper and lower flanges 2b, and a plurality of stiffeners 2c. The stiffener 2c is provided in a recess surrounded by the web 2a and the upper and lower flanges 2b, and is joined to the web 2a and the upper and lower flanges 2b. Also, the plurality of stiffeners 2c are arranged at intervals in the length direction of the upper steel beam 2.

[0029] The lower steel beam 3 has the same configuration as the upper steel beam 2, and includes a web 3a, upper and lower flanges 3b, and a plurality of stiffeners 3c.

[0030] The left pipe column 4 is a wooden column, and is a long member that is square in a cross-sectional view perpendicular to the length direction (vertical direction). The pipe column 4 of this embodiment employs structural glued laminated timber, but solid square timbers, LVL (Laminated Veneer Lumber), CLT (Cross Laminated Timber), etc. may also be employed. That is, this pipe column 4 is a solid wood member.

[0031] As shown in FIGS. 1 and 2(a), steel first reinforcing caps 7 are put on and fixed to the upper and lower end portions of the pipe column 4. Mounting surfaces 4a that are in contact with the side wall portions 7b of the first reinforcing caps 7 are formed at the upper and lower end portions of the pipe column 4. The mounting surface 4a is formed by shaving a predetermined width and a predetermined depth along the circumferential direction of the outer periphery of the end portion of the pipe column 4, and has a predetermined step with the outer peripheral surface of the pipe column 4 at a position where the first reinforcing cap 7 is not provided. The predetermined step corresponds to the thickness of the side wall portion 7b of the first reinforcing cap 7. In addition, a plurality of insertion holes 4b into which a plurality of steel bars 6a in the frame connection member 6 are inserted are formed in the upper and lower end faces of the pipe column 4. In the present embodiment, the plurality of insertion holes 4b are formed at the four corners of the upper and lower end faces of the pipe column 4 along the length direction of the pipe column 4. Among the insertion holes 4b at the four corners, the insertion holes 4b located on the front side are located on the front side of the webs 2a and 3a of the upper and lower steel beams 2 and 3, and the insertion holes 4b located on the back side among the insertion holes 4b at the four corners are located on the back side of the webs 2a and 3a of the upper and lower steel beams 2 and 3. Note that the depth of the insertion hole 4b is set to be shorter than the length of the steel bar 6a. Therefore, the tip of the steel bar 6a inserted into the insertion hole 4b protrudes from the upper and lower end faces of the pipe column 4.

[0032] The first reinforcing cap 7 has a flat plate portion 7a in contact with the end face of the pipe column 4 and a side wall portion 7b provided along the outer peripheral edge portion of the flat plate portion 7a. The flat plate portion 7a is square according to the shape of the end face of the pipe column 4. A plurality of through holes 7c through which the tips of the plurality of steel bars 6a in the frame connection member 6 are inserted are formed in the flat plate portion 7a. In addition, a plurality of screw holes are formed in the flat plate portion 7a, and the flat plate portion 7a is screwed to the end face of the pipe column 4 (the use of an adhesive is also possible). The side wall portion 7b is integrally formed on each side of such a square flat plate portion 7a and rises in a state perpendicular to the flat plate portion 7a. As a result, the side wall portion 7b is in contact with the mounting surfaces 4a formed at the upper and lower end portions of the pipe column 4.

[0033] The pipe column 5 on the right side has the same configuration as the pipe column 4 on the left side, and steel first reinforcing caps 7 are put on and fixed to the upper and lower end portions. In addition, mounting surfaces 5a in contact with the side wall portions 7b of the first reinforcing caps 7 are formed at the upper and lower end portions of the pipe column 5. A plurality of insertion holes 5b into which a plurality of steel bars 6a in the frame connection member 6 are inserted are formed in the upper and lower end faces of the pipe column 5.

[0034] The frame connecting member 6 includes a steel bar 6a inserted into each of a plurality of insertion holes 4b and 5b formed in the upper and lower end faces of the pipe columns 4 and 5, an adhesive layer (not shown) composed of an adhesive filled between the insertion holes 4b and 5b and the steel bar 6a, and nuts 6b provided at the tip portions of the steel bar 6a protruding from the upper and lower end faces of the pipe columns 4 and 5. Note that at least the tip portion of the steel bar 6a has a male thread. That is, a thread is formed at least at the tip portion of the steel bar 6a so that it can be screwed into the female thread of the nut 6b. Also, the portion of the steel bar 6a inserted into the insertion holes 4b and 5b does not necessarily have a male thread, but it is preferable that unevenness is formed on the outer peripheral surface in order to increase the adhesive force of the adhesive. More specifically, a plurality of steel bars 6a are embedded in the upper and lower end faces of the pipe columns 4 and 5 so that their tip portions protrude from the upper and lower end faces of the pipe columns 4 and 5, and are joined and fixed by an adhesive. Such a joining method of the pipe columns 4 and 5 and the plurality of steel bars 6a is called Glued in Rod (GIR). That is, it is a method in which an adhesive is filled in the gap between the insertion holes 4b and 5b and the steel bar 6a, and the stress is transmitted through the adhesive force of the adhesive and the steel bar 6a due to the curing of the adhesive, thereby generating joint strength. According to such a joining method, the pipe columns 4 and 5 and the steel bar 6a can be firmly joined and fixed, so that the pull-out resistance of the pipe columns 4 and 5 can be improved.

[0035] Here, the first reinforcing cap 7 is placed and fixed on the upper and lower end portions of the pipe columns 4 and 5 such that a plurality of steel bars 6a provided on the upper and lower end faces of the pipe columns 4 and 5 are inserted through a plurality of through holes 7c. Since the side wall portion 7b of the first reinforcing cap 7 covers the upper and lower end portions of the pipe columns 4 and 5 from the outside, it is possible to suppress the splitting of the upper and lower end portions of the pipe columns 4 and 5.

[0036] And, in the flanges 2b and 3b of the upper steel beam 2 and the lower steel beam 3, a plurality of through holes are formed through which the tip portions of a plurality of steel bars 6a inserted into a plurality of insertion holes 4b and 5b in the pipe columns 4 and 5 are inserted. These plurality of through holes are respectively formed in portions of the flanges 2b and 3b located on the front side and the back side of the webs 2a and 3a. The plurality of steel bars 6a provided on the upper and lower end faces of the pipe columns 4 and 5 are inserted into each of the plurality of through holes formed in the flanges 2b and 3b. At this time, the first reinforcing cap 7 has a flat plate portion 7a in contact with the flanges 2b and 3b. The nut 6b is provided and coupled to the tip portion of the steel bar 6a inserted into each of the plurality of through holes formed in the flanges 2b and 3b. Thereby, the upper and lower steel beams 2 and 3 and the pair of left and right pipe columns 4 and 5 can be connected to form the structure 1.

[0037] Inside the structure 1 configured as described above, as shown in FIG. 1, a shear wall portion 10 having an upper end fixed to the upper steel beam 2 and a lower end fixed to the lower steel beam 3 is disposed. Note that the shear wall portion 10 is fixed to the upper and lower steel beams 2 and 3 by wall connection members 13 and fixed portions 14 described later.

[0038] The shear wall portion 10 is a wall for supporting the building body against the vertical load applied to the building body and the horizontal load due to itself, strong wind, etc. by being incorporated into the structure 1. Such a shear wall portion 10 includes a pair of left and right wooden side members 11 formed in a columnar shape, a wooden shear wall main body provided between the pair of side members 11 and joined to the pair of side members 11, and a steel second reinforcing cap 15 that covers and is fixed to the upper and lower end portions of the pair of side members 11 and the shear wall main body.

[0039] The left and right side members 11 are long members that are square in a cross-sectional view perpendicular to the length direction (vertical direction). The side members 11 of the present embodiment employ structural glued laminated timber, but solid square timbers, LVL (Laminated Veneer Lumber), CLT (Cross Laminated Timber), etc. may also be employed. That is, these pair of side members 11 are solid members. Further, a plurality of insertion holes 11a into which a plurality of steel bars 13a of the wall connecting member 13 are inserted are formed in the upper and lower end faces of the pair of side members 11. In the present embodiment, the plurality of insertion holes 11a are formed along the length direction of the side members 11 at the four corners of the upper and lower end faces of the side members 11. Note that the depth of the insertion hole 11a is set to be shorter than the length of the steel bar 13a. Therefore, the tip portions of the steel bars 13a inserted into the insertion holes 11a protrude from the upper and lower end faces of the side members 11.

[0040] The shear wall body is constituted by a plurality of building wooden panels 12 provided vertically between the pair of side members 11 and stacked in the thickness direction. In the present embodiment, it is assumed that it is constituted by a plurality of building wooden panels 12. The building wooden panel 12 is one in which vertical and horizontal frames are assembled in a rectangular shape, auxiliary cross members are assembled vertically and horizontally inside the rectangular frame to form a frame body, and a face material is attached to both sides or one side of this frame body, and has an internal hollow structure. In the present embodiment, the face materials are attached to both sides. Further, the internal hollow portion is usually filled with a heat insulating material (not shown) such as glass wool or rock wool. However, the shear wall body is not limited to the above-described building wooden panel 12, and may be a plywood nailed panel or other wooden panels. And the shear wall body of the present embodiment is constituted by the upper front building wooden panel 12, the lower front building wooden panel 12, the upper rear building wooden panel 12, and the lower rear building wooden panel 12. These four building wooden panels 12 are joined by an adhesive (combination use of screws, etc. is possible). The plurality of wooden building panels 12 that constitute the shear wall body are adhered and joined to a pair of side members 11. Further, the front surface of the shear wall body composed of the plurality of wooden building panels 12 and the front surface of the pair of side members 11 are flush, and the back surface of the shear wall body and the back surface of the pair of side members 11 are flush.

[0041] The second reinforcing cap 15 has a flat plate portion 15a that contacts the end faces of the pair of side members 11 and the end face of the shear wall body, and a side wall portion 15b that is provided along the outer peripheral edge of the flat plate portion 15a and is integrally formed with the flat plate portion 15a and contacts the side surfaces of the pair of side members 11 and the shear wall body. Since the flat plate portion 15a contacts the end faces of the pair of side members 11 and the shear wall body that are joined and integrated, it is rectangular in accordance with the end face shapes of these pair of side members 11 and the shear wall body. At the position where the end faces of the pair of side members 11 contact each other in this flat plate portion 15a, a plurality of through holes 15c through which the tip portions of the plurality of steel bars 13a in the wall connecting member 13 are inserted are formed. Further, a plurality of screw holes are formed in the flat plate portion 15a at the positions where the end faces of the pair of side members 11 contact and at the positions where the end face of the shear wall body contacts, and the flat plate portion 15a is screwed to the end faces of the pair of side members 11 and the shear wall body (the combined use of an adhesive is possible). The side wall portion 15b is integrally formed on each side of such a rectangular flat plate portion 15a and stands up in a state orthogonal to the flat plate portion 15a. Thereby, the side wall portion 15b contacts the side surfaces at the upper and lower end portions of the pair of side members 11 and the shear wall body.

[0042] The wall connecting member 13 includes steel bars 13a inserted into respective ones of a plurality of insertion holes 11a formed in the upper and lower end faces of the pair of side members 11, an adhesive layer (not shown) composed of an adhesive filled between the insertion holes 11a and the steel bars 13a, and nuts 13b provided at the tip portions of the steel bars 13a that protrude from the upper and lower end faces of the side members 11. Note that at least the tip portion of the steel bar 13a has a male thread. That is, a thread is formed at least at the tip portion of the steel bar 13a so that it can be screwed into the female thread of the nut 13b. Further, the portion of the steel bar 13a that is inserted into the insertion hole 11a of the side member 11 does not necessarily have to be a male screw, but it is preferable that unevenness is formed on the outer peripheral surface in order to enhance the adhesive force of the adhesive. More specifically, a plurality of steel bars 13a are embedded in the upper and lower end surfaces of the pair of side members 11 in such a manner that their tip portions protrude from the upper and lower end surfaces of the side members 11, and are joined and fixed by an adhesive. Such a joining method of the side member 11 and the plurality of steel bars 13a is called glued-in rod. That is, an adhesive is filled in the gap between the insertion hole 11a and the steel bar 13a, and by the curing of the adhesive, stress is transmitted through the adhesive force of the adhesive and the steel bar 13a to generate joint strength. According to such a joining method, the side member 11 and the steel bar 13a can be firmly joined and fixed, so that the pull-out resistance of the side member 11 can be improved. Also, the nut 13b is a high nut (also called a long nut), and its overall length is set long, and male screws can be screwed in separately from one end and the other end of the hole portion in which the female screw (thread) is formed.

[0043] Here, the second reinforcing cap 15 is covered and fixed to the upper and lower end portions of the pair of side members 11 and the load-bearing wall body such that a plurality of steel bars 13a provided on the upper and lower end surfaces of the pair of side members 11 are inserted through the plurality of through holes 15c. Since the second reinforcing cap 15 covers the upper and lower end portions of the pair of side members 11 and the load-bearing wall body from the outside by the side wall portion 15b, it is possible to suppress the splitting of the upper and lower end portions of the pair of side members 11 and to suppress the separation of the pair of side members 11 and the load-bearing wall body.

[0044] Then, a plurality of through holes are formed in the flanges 2b, 3b located on the load-bearing wall portion 10 side of the upper steel beam 2 and the lower steel beam 3, through which the tip portions of the plurality of steel bars 13a inserted into the plurality of insertion holes 11a of the pair of side members 11 are inserted. These plurality of through holes are respectively formed in portions of the flanges 2b and 3b located on the side of the load-bearing wall portion 10, which are located on the front side and the back side of the webs 2a and 3a.

[0045] In addition, on the flanges 2b and 3b of the upper steel beam 2 and the lower steel beam 3, which are located on the side opposite to the load-bearing wall portion 10, there are provided fixed portions 14 to which the wall connecting members 13 are fixed. The fixed portion 14 includes a base plate 14a and a plurality of beam-side fixing bolts 14b. The base plate 14a is formed with a plurality of through holes through which the plurality of beam-side fixing bolts 14b are inserted. Further, the plurality of beam-side fixing bolts 14b are inserted through the plurality of through holes formed in the base plate 14a, and the heads (nuts may also be used) are in contact with the base plate 14a.

[0046] The base plate 14a of the upper fixed portion 14 is provided on the upper surface of the upper flange 2b of the upper steel beam 2. The dimension of the base plate 14a in the front-back direction is set to be substantially equal to the width of the flange 2b (beam width). And the flange 2b is formed with a plurality of through holes through which the plurality of beam-side fixing bolts 14b are inserted. That is, the plurality of beam-side fixing bolts 14b inserted through the plurality of through holes in the base plate 14a are also inserted through the plurality of through holes in the flange 2b of the upper steel beam 2 and protrude toward the lower flange 2b of the upper steel beam 2. The tip portions of such plurality of beam-side fixing bolts 14b are screwed into the nuts 13b in the wall connecting member 13 and are coupled. In other words, the tip portion of the beam-side fixing bolt 14b penetrating the upper flange 2b and the tip portion of the steel bar 13a of the wall connecting member 13 are coupled to the nut 13b in the upper wall connecting member 13, and the wall connecting member 13 and the fixed portion 14 are in a connected state.

[0047] That is, the plurality of steel bars 13a of the wall connecting member 13 provided at the upper end portion of the shear wall portion 10 are inserted into the plurality of through holes 15c in the second reinforcing cap 15 and also inserted into the plurality of through holes formed in the lower flange 2b of the upper steel beam 2, and nuts 13b are coupled to the tip ends thereof. And a fixed portion 14 is provided on the upper flange 2b of the upper steel beam 2. The plurality of beam-side fixing bolts 14b in the fixed portion 14 are inserted into the plurality of through holes in the base plate 14a and also inserted into the plurality of through holes formed in the upper flange 2b of the upper steel beam 2, and the tip ends thereof are coupled to the nuts 13b of the wall connecting member 13.

[0048] On the other hand, the base plate 14a of the lower fixed portion 14 is provided on the lower surface of the lower flange 3b of the lower steel beam 3. Similar to the base plate 14a of the upper fixed portion 14, a plurality of through holes are formed so that the plurality of beam-side fixing bolts 14b are inserted therethrough. A plurality of through holes through which the plurality of beam-side fixing bolts 14b are inserted are also formed in the flange 3b of the lower steel beam 3. That is, the plurality of beam-side fixing bolts 14b inserted into the plurality of through holes in the base plate 14a are also inserted into the plurality of through holes in the flange 3b of the lower steel beam 3 and protrude toward the upper flange 3b of the lower steel beam 3. The tip ends of such plurality of beam-side fixing bolts 14b are screwed and coupled to the nuts 13b in the wall connecting member 13. In other words, the tip end of the beam-side fixing bolt 14b penetrating the lower flange 3b and the tip end of the steel bar 13a of the wall connecting member 13 are coupled to the nut 13b in the lower wall connecting member 13, and the wall connecting member 13 and the fixed portion 14 are in a connected state.

[0049] That is, the plurality of steel bars 13a of the wall connecting member 13 provided at the lower end portion of the shear wall portion 10 are inserted into the plurality of through holes 15c in the second reinforcing cap 15 and also inserted into the plurality of through holes formed in the upper flange 3b of the lower steel beam 3, and nuts 13b are coupled to the tip ends thereof. A fixed part 14 is provided on the lower flange 3b of the lower steel beam 3. A plurality of beam-side fixing bolts 14b in the fixed part 14 are inserted through a plurality of through holes in the base plate 14a and a plurality of through holes formed in the lower flange 3b of the lower steel beam 3, and their tip ends are in a state of being coupled to the nuts 13b of the wall connecting member 13.

[0050] In short, the shear wall part 10 is not fixed only to the flanges 2b and 3b on the shear wall part 10 side of the upper and lower steel beams 2 and 3, but is provided by the wall connecting member 13 and the fixed part 14 across the beam forming direction of the upper and lower steel beams 2 and 3. Therefore, the shear wall part 10 is in a state of being firmly fixed to the upper and lower steel beams 2 and 3. Further, since a pair of side members 11 of the shear wall part 10 are fixed to the upper and lower steel beams 2 and 3 via the wall connecting member 13 and the fixed part 14, the shear wall part 10 is fixed to the upper and lower steel beams 2 and 3 with a short span of the width dimension of the shear wall main body. Therefore, the connection strength between the upper and lower steel beams 2 and 3 and the shear wall part 10 is extremely high.

[0051] Note that the first-floor lower steel beam 3 is placed on the upper surface of the foundation as described above, but a plurality of anchor bolts protrude from the upper surface of the foundation. The plurality of anchor bolts include an anchor bolt corresponding to the steel bar 6a of the frame connection member 6 and an anchor bolt corresponding to the beam-side fixing bolt 14b of the fixed part 14. Therefore, when the first-floor lower steel beam 3 is placed on the upper surface of the foundation, the first-floor lower steel beam 3 is firmly connected to the foundation by the anchor bolt corresponding to the steel bar 6a of the frame connection member 6, and the lower end portion of the first-floor shear wall part 10 is firmly connected to the foundation and the lower steel beam 3 by the anchor bolt corresponding to the beam-side fixing bolt 14b of the wall connecting member 13 and the fixed part 14. At this time, it is assumed that the base plate 14a of the fixed part 14 in contact with the lower surface of the lower flange 3b of the lower steel beam 3 is omitted.

[0052] Also, in the case of the fixed part 14 of the present embodiment, a base plate 14a is provided on the upper surface of the upper flange 2b of the upper steel beam 2, and further, the beam-side fixing bolt 14b protrudes upward from the upper surface of the base plate 14a. Therefore, the upper-story shear wall part 10 is not provided above the lower-story shear wall part 10. In this case, when the lower-story shear wall part 10 and the upper-story shear wall part 10 are arranged in the structure 1 adjacent vertically, they are provided in a state where their positions do not overlap. Or, they are provided in each of the structures 1 that are not adjacent vertically. If it is desired to provide the upper-story shear wall part 10 above the lower-story shear wall part 10, the fixed part 14 is omitted, and the high nuts 13b in the wall connection member 13 for the upper and lower-story shear wall parts 10 are made common. That is, the upper end part of the steel bar 13a in the wall connection member 13 for the lower-story shear wall part 10 and the lower end part of the steel bar 13a in the wall connection member 13 for the upper-story shear wall part 10 are connected to a common high nut 13b.

[0053] As shown in FIG. 3, when a horizontal load (arrow A1) is applied to the frame structure 1 composed of the upper and lower steel beams 2, 3 and the pair of pipe columns 4, 5, for example, by an earthquake or a typhoon, the frame structure 1 composed of the upper and lower steel beams 2, 3 and the pair of pipe columns 4, 5 tends to deform into a parallelogram shape. That is, the upper steel beam 2 and the lower steel beam 3 tend to move in opposite left and right directions. At this time, forces (arrows A2, A3) in different vertical directions act on one side member 11 and the other side member 11 of the shear wall part 10 that are connected to the upper and lower steel beams 2, 3. Then, the forces acting on one side member 11 and the other side member 11 of the shear wall part 10 that are connected to the upper and lower steel beams 2, 3 are transmitted to the pair of pipe columns 4, 5 through the upper and lower steel beams 2, 3 and are dispersed vertically (arrow A4). As a result, the building body can ensure sufficient seismic resistance. On the contrary, if the upper and lower steel beams 2 and 3 and the pair of pipe columns 4 and 5 are not firmly connected by the structural connecting member 6, when a horizontal load (arrow A1) is applied, a large pulling force will act on the joints of the pair of pipe columns 4 and 5 with respect to the upper and lower steel beams 2 and 3. And if the joint cannot resist the large pulling force, the forces acting on one side member 11 and the other side member 11 of the shear wall portion 10 connected to the upper and lower steel beams 2 and 3 will not be transmitted to the pair of pipe columns 4 and 5 through the upper and lower steel beams 2 and 3, so that the building structure cannot ensure sufficient seismic resistance. In short, in this embodiment, since the upper and lower steel beams 2 and 3 and the pair of pipe columns 4 and 5 are firmly connected by the structural connecting member 6, the axial forces of the pair of side members 11 in the shear wall portion 10 against the horizontal load can be transmitted to the pair of pipe columns 4 and 5 through the upper and lower steel beams 2 and 3, so that the horizontal load can be effectively dispersed.

[0054] According to this embodiment, the following excellent effects can be obtained. That is, each of the upper and lower steel beams 2 and 3 and the pair of pipe columns 4 and 5 is connected by a structural connecting member 6 provided across between the steel beam 2 and 3 and the pipe column 4 and 5, so that the steel beam 2 and 3 and the pipe column 4 and 5 can be firmly connected by the structural connecting member 6. And inside the structure 1 composed of the upper and lower steel beams 2 and 3 and the pair of pipe columns 4 and 5, the shear wall portion 10 is arranged. The upper end portion of this shear wall portion 10 is fixed to the upper steel beam 2, and the lower end portion is fixed to the lower steel beam 3. Therefore, when a horizontal load is applied to the building structure, the shear wall portion 10 tries to suppress the deformation of the structure 1, and at this time, the force acting on the shear wall portion 10 can be transmitted to the pair of pipe columns 4 and 5 firmly connected to the upper and lower steel beams 2 and 3 by the structural connecting member 6 through the upper and lower steel beams 2 and 3. Thereby, the horizontal load applied to the building structure can be effectively dispersed, so that the building structure can ensure sufficient seismic resistance.

[0055] In addition, the frame connection member 6 includes steel bars 6a inserted into respective ones of a plurality of insertion holes 4b and 5b formed in upper and lower end faces of the pipe columns 4 and 5, an adhesive layer composed of an adhesive filled between the insertion holes 4b and 5b and the steel bars 6a, and nuts 6b provided at tip portions of the steel bars 6a protruding from upper and lower end faces of the pipe columns 4 and 5. Therefore, the plurality of steel bars 6a are embedded in the upper and lower end faces of the pipe columns 4 and 5 and joined and fixed by an adhesive so that their tip portions protrude from the upper and lower end faces of the pipe columns 4 and 5. That is, due to the curing of the adhesive filled between the insertion holes 4b and 5b and the steel bars 6a, stress is transmitted via the adhesive force of the adhesive and the steel bars 6a, and joint strength can be generated. Thereby, since the pipe columns 4 and 5 and the steel bars 6a can be firmly joined and fixed, the pull-out resistance of the pipe columns 4 and 5 can be improved. And, since tip portions of the plurality of steel bars 6a firmly joined and fixed to the pipe columns 4 and 5 are inserted into a plurality of through holes formed in flanges 2b and 3b of the upper and lower steel beams 2 and 3, and nuts 6b are provided at their tip portions, the pipe columns 4 and 5 can be securely and firmly fastened to the upper and lower steel beams 2 and 3. Thereby, since each of the upper and lower steel beams 2 and 3 and the pair of pipe columns 4 and 5 are firmly connected by the frame connection member 6 provided across between the steel beams 2 and 3 and the pipe columns 4 and 5, it can contribute to ensuring sufficient earthquake resistance.

[0056] In addition, the first reinforcing cap 7 has a flat plate portion 7a in contact with end faces of the pipe columns 4 and 5, and a side wall portion 7b provided along an outer peripheral edge portion of the flat plate portion 7a and integrally formed with the flat plate portion 7a and in contact with side faces of the pipe columns 4 and 5. Since a plurality of through holes 7c through which tip portions of the plurality of steel bars 6a are inserted are formed in the flat plate portion 7a, the first reinforcing cap 7 can be put on and fixed to upper and lower ends of the pipe columns 4 and 5 with the plurality of steel bars 6a protruding from upper and lower end faces of the pipe columns 4 and 5. And, since the side wall portion 7b integrally formed with the flat plate portion 7a and in contact with side faces of the pipe columns 4 and 5 can cover upper and lower ends of the pipe columns 4 and 5 from the outside, when a large pull-out force acts on upper and lower ends of the pipe columns 4 and 5, it is possible to suppress occurrence of tearing at upper and lower ends of the pipe columns 4 and 5, and it can contribute to ensuring sufficient earthquake resistance.

[0057] Further, the shear wall portion 10 includes a pair of columnar wooden side members 11, a shear wall main body provided between the pair of side members 11 and joined to the pair of side members 11, and a steel second reinforcing cap 15 that is covered and fixed to the upper and lower end portions of the pair of side members 11 and the shear wall main body. Therefore, the second reinforcing cap 15 can enhance the integrity of the pair of side members 11 and the shear wall main body. In particular, the second reinforcing cap 15 has a flat plate portion 15a that contacts the end faces of the pair of side members 11 and the end face of the shear wall main body, and a side wall portion 15b that is provided along the outer peripheral edge portion of the flat plate portion 15a and is integrally formed with the flat plate portion 15a and contacts the side faces of the pair of side members 11 and the shear wall main body. Thus, the side wall portion 15b can cover the upper and lower end portions of the pair of side members 11 and the shear wall main body from the outside. As a result, when a large force acts on the shear wall portion 10, it is possible to suppress the splitting of the upper and lower end portions of the pair of side members 11 and to prevent the pair of side members 11 and the shear wall main body from separating, contributing to ensuring sufficient seismic resistance.

[0058] In addition, the wall connecting member 13 includes steel bars 13a inserted into respective ones of a plurality of insertion holes 11a formed in the upper and lower end faces of the side member 11, an adhesive layer composed of an adhesive filled between the insertion holes 11a and the steel bars 13a, and nuts 13b provided at the tip portions of the steel bars 13a that protrude from the upper and lower end faces of the side member 11. Therefore, the plurality of steel bars 13a are embedded in the upper and lower end faces of the pair of side members 11 and joined and fixed by the adhesive so that their tip portions protrude from the upper and lower end faces of the pair of side members 11. That is, by curing the adhesive filled between the insertion holes 11a and the steel bars 13a, stress can be transmitted through the adhesive's adhesive force and the steel bars 13a to generate joint strength. As a result, the side member 11 and the steel bars 13a can be firmly joined and fixed, improving the pull-out resistance of the pair of side members 11. In addition, since a plurality of through holes 15c through which the tip portions of the plurality of steel bars 13a are inserted are formed in the flat plate portion 15a of the second reinforcing cap 15, the second reinforcing cap 15 can be placed and fixed on the upper and lower ends of the pair of side members 11 and the shear wall main body with the plurality of steel bars 13a protruding from the upper and lower end faces of the pair of side members 11. Then, the tip portions of the plurality of steel bars 13a firmly joined and fixed to the pair of side members 11 are inserted into a plurality of through holes formed in the flanges 2b, 3b of the upper and lower steel beams 2, 3, and are provided at the tip portions on the nuts 13b. Therefore, the pair of side members 11 can be securely and firmly fastened to the upper and lower steel beams 2, 3. As a result, the upper and lower steel beams 2, 3 and the shear wall portion 10 are firmly connected by the wall connecting member 13 provided between the steel beams 2, 3 and the pair of side members 11, which can contribute to ensuring sufficient seismic resistance.

[0059] In addition, since the shear wall main body is composed of the architectural wooden panel 12 provided vertically between the pair of side members 11, it can be easily joined to the pair of side members 11 made of wood. Further, since the architectural wooden panel 12 is used in construction, it has a certain degree of strength even by itself. Since the shear wall main body is composed of such an architectural wooden panel 12, the strength of the shear wall portion 10 incorporating such a shear wall main body is also improved. As a result, when a horizontal load is applied to the building frame, the deformation of the frame 1 is easily suppressed by the shear wall portion 10.

[0060] And since the building equipped with the building frame of the present embodiment can have the pair of pipe columns 4, 5 and the shear wall portion 10 made of wood, it can contribute to the realization of a decarbonized society by promoting carbon neutrality and the achievement of the SDGs goals.

[0061] 〔Modification Example〕 Note that the applicable embodiments of the present invention are not limited to the above-described embodiments and can be appropriately modified without departing from the spirit of the present invention. Hereinafter, modification examples will be described. The following modification examples may be combined as much as possible. Also, in each of the following modification examples, elements common to the above-described embodiments are denoted by common reference numerals, and the description thereof is omitted or simplified.

[0062] 〔Modification Example 1〕 In the building body of this modification example, as shown in FIG. 4, a pair of pipe columns 40 and 50 are made of steel, and include a column body formed in a square tube shape, base plates 41 and 51 joined to the upper and lower end faces of the column body and contacting the flanges 2b and 3b of the upper and lower steel beams 2 and 3, and rib plates 42 and 52 fixed to both the side surfaces of the upper and lower end portions of the column body and the base plates 41 and 51. And the pair of pipe columns 40 and 50 and the upper and lower steel beams 2 and 3 are firmly connected by a frame connecting member 60 composed of bolts and nuts.

[0063] The column body of the pipe columns 40 and 50 has the same dimensions in the left-right direction and the front-back direction, and the dimension in the front-back direction is set shorter than the beam width of the upper and lower steel beams 2 and 3. That is, the column body is formed thinner than the upper and lower steel beams 2 and 3. Note that this column body is formed thinner than the pair of side members 11 constituting the shear wall portion 10 and the pair of pipe columns 4 and 5 in the above-described embodiment.

[0064] The base plates 41 and 51 are square steel plates, and the dimensions in the left-right direction and the front-back direction are set longer than the dimensions in the left-right direction and the front-back direction of the pipe columns 40 and 50. In addition, the base plates 41 and 51 project in the left - right direction and the front - back direction beyond the side surfaces of the pipe columns 40 and 50. That is, the base plates 41 and 51 project in all four directions with respect to the pipe columns 40 and 50. Through - holes through which the bolts of the frame connection member 60 are inserted are respectively formed at the four corners of such base plates 41 and 51. Among the through - holes at the four corners, the through - holes located on the front side are located on the front side of the webs 2a and 3a of the upper and lower steel beams 2 and 3, and the through - holes located on the back side among the through - holes at the four corners are located on the back side of the webs 2a and 3a of the upper and lower steel beams 2 and 3.

[0065] The rib plates 42 and 52 are steel plates in a substantially triangular shape having two orthogonal sides and a hypotenuse. One of the two orthogonal sides is joined and fixed to the side surface of the column body, and the other of the two orthogonal sides is joined and fixed to the base plates 41 and 51. Note that the rib plates 42 and 52 provided at the lower ends of the pipe columns 40 and 50 are provided in two pieces each on the left and right and two pieces each on the front and back. On the other hand, the rib plates 42 and 52 provided at the upper ends are provided in two pieces each on the left and right. However, the joining locations and the number of rib plates 42 and 52 are not limited to this. By fixing such rib plates 42 and 52 to both the side surfaces of the upper and lower ends of the column body and the base plates 41 and 51, the joining strength of the base plates 41 and 51 to the column body can be improved, contributing to the improvement of the rigidity of the upper and lower ends of the pipe columns 40 and 50.

[0066] Also, among the flanges 2b and 3b on the side of the pipe columns 40 and 50 in the upper and lower steel beams 2 and 3, through - holes through which the bolts of the frame connection member 60 are inserted are formed at the locations where the base plates 41 and 51 of the pipe columns 40 and 50 are in contact. And the bolts of the frame connection member 60 are inserted through the through - holes formed at the four corners of the base plates 41 and 51 of the pipe columns 40 and 50 and the through - holes formed in the flanges 2b and 3b, and nuts are screwed onto the tip ends thereof. Thus, the pipe columns 40 and 50 can be firmly connected to the upper and lower steel beams 2 and 3.

[0067] In the load-bearing wall portion 10 of this modified example, the load-bearing wall main body is provided, as shown in FIGS. 4 and 5, with upper and lower frame members 16 and 17 spanned between the upper ends and the lower ends of a pair of side members 11 respectively, and a vibration damping device 20 having vibration damping means and arranged inside a rectangular frame formed by the pair of side members 11 and the upper and lower frame members 16 and 17. And the vibration damping device 20 is joined to the pair of side members 11 and the upper and lower frame members 16 and 17.

[0068] The upper and lower frame members 16 and 17 are made of wood, are formed to be long in the left-right direction, the left end portion is joined and fixed to the left side member 11, and the right end portion is joined and fixed to the right side member 11. Thus, the upper and lower frame members 16 and 17, together with the pair of side members 11, form a wooden rectangular frame.

[0069] In this modified example, two vibration damping devices 20 are arranged side by side vertically. And these upper and lower vibration damping devices 20 have the same configuration. Also, the thickness of these two vibration damping devices 20 is set to about half of the dimension in the front-rear direction of the pair of side members 11. And behind (the back side) of such a vibration damping device 20, for example, a building wooden panel of the same thickness may be provided. That is, the vibration damping device 20 and the building wooden panel may be arranged side by side so as to overlap in the thickness direction.

[0070] Each vibration damping device 20 includes a rectangular frame-shaped rectangular frame 21, a pair of support portions 22 provided opposite to the rectangular frame 21, a vertically long pendulum member 23 arranged between the pair of support portions 22 and supported by the pair of support portions 22, and vibration damping boxes 24 provided at the upper and lower end portions of the rectangular frame 21.

[0071] The rectangular frame 21 is formed by assembling a pair of left and right vertical frames and a pair of upper and lower horizontal frames in a rectangular frame shape, and the ends of the vertical frames and the ends of the horizontal frames are pin-jointed. Therefore, when a force acts in the left-right direction, the rectangular frame 21 can be deformed so as to form a parallelogram. Note that the vertical frames and the horizontal frames are formed of a metal such as iron or aluminum.

[0072] The vertical frame is composed of a strip-shaped outer peripheral plate portion that constitutes the outer peripheral surface of the rectangular frame 21, a strip-shaped inner plate portion that is formed at a right angle to the inner surface of this outer peripheral plate portion and extends toward the center side of the rectangular frame 21, and a strip-shaped extension plate portion that is integrally formed at the end portion on the extension direction side of this inner plate portion and further extends toward the center side of the rectangular frame 21. Among them, the outer peripheral plate portion of this vertical frame is in contact with the inner surface of the side member 11, and a plurality of locations spaced apart in the length direction are screwed to the side member 11.

[0073] The horizontal frame includes a strip-shaped outer peripheral plate portion that constitutes the outer peripheral surface of the rectangular frame 21, and a pair of inner plate portions that are respectively formed at right angles to the inner surfaces of both end portions of this outer peripheral plate portion and are pin-connected to the end portions of the inner plate portion of the vertical frame. And a vibration damping box 24 is integrally attached between the pair of inner plate portions. Among them, the outer peripheral plate portion of the horizontal frame is in contact with the upper frame member 16 and the lower frame member 17, and a plurality of locations spaced apart in the length direction are screwed to the upper frame member 16 and the lower frame member 17.

[0074] A support portion 22 is integrally fixed to each of the pair of left and right vertical frames in the rectangular frame. The support portion 22 is composed of a plate material formed in a substantially trapezoidal shape in a front view, and is in a state of tapering toward the center side of the rectangular frame 21. The pair of support portions 22 are arranged at intervals, and the central portion of the pendulum member 23 that is long in the vertical direction is bridged and supported between the pair of support portions 22.

[0075] The pendulum member 23 is plate-shaped and formed in a vertically long polygonal shape, and is arranged with its longitudinal direction facing up and down. The left half of the central portion in the length direction of the pendulum member 23 is rotatably attached to the left support portion 22, and the right half is rotatably attached to the right support portion 22. Note that the pendulum member 23 is formed of a metal such as iron or aluminum. Such a pendulum member 23 is supported at its longitudinal center by a pair of support portions 22, and is configured to swing about a substantially central portion between the pair of support portions 22 when the rectangular frame 21 is deformed by vibrations such as an earthquake and the pair of support portions 22 are displaced.

[0076] Each end portion of the pair of support portions 22 located on the central side of the rectangular frame 21 and the pendulum member 23 are rotatably connected by a rotating shaft (for example, a bolt). Thereby, the pendulum member 23 is supported by the pair of support portions 22 via the rotating shaft. The pendulum member 23 is configured to swing about a substantially central portion between the pair of support portions 22, in other words, the central portion between the two rotating shafts, when the pair of support portions 22 are displaced by vibrations such as an earthquake.

[0077] As shown in FIG. 5, the vibration damping box 24 includes a box-shaped box 24a with open upper and lower surfaces (only the front plate 24a1 and the back plate 24a2 of the box 24a are shown in FIG. 5, and the left and right plates are omitted), a pair of vibration damping members 24b attached inside the box 24a, and a plate 24c inserted between the vibration damping members 24b and fixed to the pair of vibration damping members 24b. As the vibration damping member 24b, for example, a viscoelastic body formed of high-damping rubber is used, which functions as a vibration damping means. One end portion of the plate 24c protrudes toward the center of the rectangular frame 21 more than the box 24a, and this protruding end portion is connected to the end portion in the length direction of the pendulum member 23. Therefore, when the pendulum member 23 swings about a substantially central portion between the pair of support portions 22, kinetic energy is transmitted to the vibration damping member 24b. Note that the box 24a, the plate 24c, etc. of the vibration damping box 24 are formed of a metal such as iron or aluminum.

[0078] The vibration control device 20 configured as described above is arranged vertically between a pair of side members 11. It is assumed that the upper horizontal frame in the rectangular frame 21 of the lower vibration control device 20 and the lower horizontal frame in the rectangular frame 21 of the upper vibration control device 20 are firmly joined to each other. Then, the vibration generated in the structure 1 can be suppressed by the vibration control devices 20 arranged vertically in this way. As a result, the energy absorption performance of the building structure including the structure 1 can be improved, so that it can sufficiently resist horizontal loads during, for example, earthquakes and typhoons, which is advantageous for constructing relatively large-scale wooden buildings.

[0079] According to this modification, each of the upper and lower steel beams 2, 3 and the pair of pipe columns 40, 50 is connected by a structure connecting member 60 provided across between the steel beams 2, 3 and the pipe columns 40, 50. Therefore, the steel beams 2, 3 and the pipe columns 40, 50 can be firmly connected by the structure connecting member 60. An earthquake-resistant wall portion 10 is arranged inside the structure 1 composed of the upper and lower steel beams 2, 3 and the pair of pipe columns 40, 50. The upper end portion of this earthquake-resistant wall portion 10 is fixed to the upper steel beam 2, and the lower end portion is fixed to the lower steel beam 3. When a horizontal load is applied to the building structure, the earthquake-resistant wall portion 10 attempts to suppress the deformation of the structure 1, and the force acting on the earthquake-resistant wall portion 10 at that time can be transmitted through the upper and lower steel beams 2, 3 to the pair of pipe columns 40, 50 firmly connected to the upper and lower steel beams 2, 3 by the structure connecting member 60. As a result, the horizontal load applied to the building structure can be effectively dispersed, so that the building structure can ensure sufficient seismic resistance.

[0080] In addition, a plurality of through holes through which a plurality of bolts are inserted are respectively formed in the flanges 2b and 3b of the upper and lower steel beams 2 and 3 and in the base plates 41 and 51 of the pair of pipe columns 40 and 50. Since the nuts are provided at the tip ends of the bolts inserted through each of the plurality of through holes in both the flanges 2b and 3b and the base plates 41 and 51, the pipe columns 40 and 50 can be securely and firmly bolted to the upper and lower steel beams 2 and 3. As a result, each of the upper and lower steel beams 2 and 3 and the pair of pipe columns 40 and 50 is firmly connected by a structural connecting member 60 provided across between the steel beam 2, 3 and the pipe columns 40, 50, which can contribute to ensuring sufficient seismic resistance.

[0081] In addition, the shear wall main body has upper and lower frame members 16 and 17 provided across between the upper end portions and the lower end portions of the pair of side members 11, and a vibration damping device 20 having vibration damping means, which is disposed inside a rectangular frame composed of the pair of side members 11 and the upper and lower frame members 16 and 17. Since the vibration damping device 20 is joined to the pair of side members 11 and the upper and lower frame members 16 and 17, for example, when a horizontal load is applied to the building structure and the rectangular frame composed of the pair of side members 11 and the upper and lower frame members 16 and 17 is about to deform due to vibration, the vibration can be damped by the vibration damping device 20, and as a result, the deformation of the structure 1 can be suppressed.

[0082] 〔Modification Example 2〕 In the building structure of this modification example, as shown in FIG. 6, the shear wall portion 10 is provided between a second reinforcing cap 15 covered and fixed to the upper end portions of the pair of side members 11 and the shear wall main body and the upper steel beam 2, and further has a damper device 30 having vibration damping means. Note that the shear wall main body is composed of a plurality of building wooden panels 12 provided vertically between the pair of side members 11.

[0083] The lower end portion of the shear wall portion 10 is firmly fixed to the lower steel beam 3 by a wall connecting member 13 and a fixed portion 14. On one hand, the upper end of the load-bearing wall portion 10 is fixed to the damper device 30. And this damper device 30 is firmly fixed to the upper steel beam 2.

[0084] The damper device 30 includes a vibration damping box 31 bolted to the upper steel beam 2 and a connecting frame 32 fixed to the upper ends of the pair of side members 11 and the load-bearing wall body. The vibration damping box 31 has a box-shaped box with an open bottom surface, a pair of vibration damping members installed in this box, and a plate 31a inserted between the pair of vibration damping members and fixed to the pair of vibration damping members. Note that as the vibration damping members, for example, viscoelastic bodies formed of high-damping rubber are used, which function as vibration damping means.

[0085] The box-shaped box of the vibration damping box 31 includes left and right and front side wall portions and a top plate portion provided at the upper ends of these side wall portions. And bolts are inserted through a plurality of through holes formed in the top plate portion and a plurality of through holes formed in the lower flange 2b of the upper steel beam 2, and nuts are provided at the tip ends of the bolts for connection. Thus, the box-shaped box of the vibration damping box 31 can be firmly fixed to the lower flange 2b of the upper steel beam 2.

[0086] A plurality of sets of the pair of vibration damping members and the plate 31a in this modification are used, and these plurality of sets of the pair of vibration damping members and the plate 31a are arranged at intervals in the left-right direction. The lower end of the plate 31a protrudes downward from the box, and this protruding lower end is bolted to the upper end of the connecting frame 32.

[0087] The connecting frame 32 has a fixing plate portion 32a that is fixed in contact with the upper surface of the second reinforcing cap 15 provided at the upper ends of the pair of side members 11 and the load-bearing wall body, and a rising plate portion 32b provided at a right angle to the fixing plate portion 32a and protruding upward. In the portion of the fixed plate portion 32a located above the pair of side members 11, through holes are formed through which a plurality of steel bars 13a of the wall connecting member 13 protruding upward from the upper end surfaces of the pair of side members 11 are inserted. Then, the plurality of steel bars 13a protruding upward from the upper end surfaces of the pair of side members 11 are inserted into the plurality of through holes formed in the fixed plate portion 32a, and nuts 13b are provided at their tip ends and are coupled. As a result, the connecting frame 32 can be firmly fixed to the pair of side members 11 and the upper end portion of the shear wall body. Since the lower end portions of the plurality of plates 31a are bolt-fixed to the rising plate portion 32b of the connecting frame 32, the upper end portions of the pair of side members 11 and the shear wall body are fixed to the upper steel beam 2 via the damper device 30. Note that the nuts 13b provided at the tip ends of the plurality of steel bars 13a protruding upward from the upper end surfaces of the pair of side members 11 are not high nuts.

[0088] When the damper device 30 is incorporated as described above, for example, when a horizontal load is applied to the building frame and the frame 1 tends to deform into a parallelogram shape due to vibration, the damper device 30 can attenuate the vibration, so that the deformation of the frame 1 can be suppressed. That is, when the upper steel beam 2 is displaced to the left, the vibration damping box 31 of the damper device 30 is also displaced to the left accordingly, and when the lower steel beam 3 is displaced to the right, the connecting frame 32 is also displaced to the right accordingly, so that the vibration generated in the frame 1 can be suppressed by the vibration damping means provided between the vibration damping box 31 and the connecting frame 32.

[0089] According to this modification example, each of the upper and lower steel beams 2, 3 and the pair of pipe columns 4, 5 is connected by a frame connecting member 6 provided across between the steel beams 2, 3 and the pipe columns 4, 5, so that the steel beams 2, 3 and the pipe columns 4, 5 can be firmly connected by the frame connecting member 6. Inside the structure 1 composed of upper and lower steel beams 2 and 3 and a pair of pipe columns 4 and 5, a shear wall portion 10 is arranged. The upper end portion of this shear wall portion 10 is fixed to the upper steel beam 2, and the lower end portion is fixed to the lower steel beam 3. Therefore, when a horizontal load is applied to the building frame, the shear wall portion 10 attempts to suppress the deformation of the structure 1. At this time, the force acting on the shear wall portion 10 can be transmitted through the upper and lower steel beams 2 and 3 to the pair of pipe columns 4 and 5 firmly connected to the upper and lower steel beams 2 and 3 by the structure connecting member 6. As a result, the horizontal load applied to the building frame can be effectively dispersed, so that the building frame can ensure sufficient seismic resistance.

[0090] In addition, the shear wall portion 10 is provided between the pair of side members 11 and the second reinforcing cap 15 fixed by covering the upper end portion of the shear wall main body and the upper steel beam 2, and further has a damper device 30 having vibration damping means. Therefore, for example, when a horizontal load is applied to the building frame and the structure 1 attempts to deform due to vibration, the vibration can be attenuated by the damper device 30 provided at the upper end portion of the shear wall portion 10.

Explanation of Signs

[0091] 1 Structure 2 Upper steel beam 2b Flange 3 Lower steel beam 3b Flange 4 Pipe column 4b Insertion hole 5 Pipe column 5b Insertion hole 6 Structure connecting member 6a Steel bar 6b Nut 7 First reinforcing cap 10 Shear wall portion 11 Side member 11a Insertion hole 12 Building wooden panel 13 Wall connecting member 13a Steel bar 13b Nut 14 Fixed portion 15 Second Reinforcing Cap 15a Flat Plate Portion 15b Side Wall Portion 15c Through Hole

Claims

1. Upper and lower steel beams, A pair of pipe columns provided between the upper and lower steel beams, It is arranged inside the structure composed of the upper and lower steel beams and the pair of pipe columns, and the upper end is fixed to the upper steel beam, and the lower end is fixed to the lower steel beam. A shear wall portion, Each of the upper and lower steel beams and the pair of pipe columns is connected by a structure connecting member provided across between the steel beam and the pipe column. A building frame structure characterized by this.

2. In the building frame structure according to Claim 1, The upper and lower steel beams are H-shaped steel materials having a web and flanges in contact with the pair of pipe columns, The pair of pipe columns are made of wood, The structure connecting member is, Steel bars inserted into each of a plurality of insertion holes formed in the upper and lower end faces of the pipe column, An adhesive layer composed of an adhesive filled between the insertion hole and the steel bar, Nuts provided at the tip portions protruding from the upper and lower end faces of the pipe column among the steel bars, In the flanges of the upper and lower steel beams, a plurality of through holes are formed through which the tip portions of the plurality of steel bars inserted into the plurality of insertion holes are inserted, The nut is provided at the tip portion of the steel bar inserted through each of the plurality of through holes. A building frame structure characterized by this.

3. In the building frame structure according to Claim 2, Steel first reinforcing caps are put on and fixed to the upper and lower ends of the pipe column, Each of the upper and lower first reinforcing caps, A flat plate portion in contact with the end face of the pipe column, A side wall portion provided along the outer peripheral edge portion of the flat plate portion and integrally formed with the flat plate portion and in contact with the side surface of the pipe column, The flat plate portion is characterized in that a plurality of through holes through which the tip portions of the plurality of steel bars are inserted are formed. A building frame structure.

4. In the building frame structure according to Claim 1, The upper and lower steel beams are H-shaped steel materials having a web and flanges in contact with the pair of pipe columns, The pair of pipe columns are made of steel and have a column body and base plates joined to the upper and lower end faces of the column body and in contact with the flanges, The structure connecting member is a bolt and a nut, In the upper and lower steel beams, a plurality of through holes through which the plurality of bolts are inserted are respectively formed in both the flange and the base plate in the pair of pipe columns, and the nut is provided at the tip of the bolt inserted through each of the plurality of through holes in both the flange and the base plate. A building frame structure characterized by this.

5. In the building frame structure according to any one of claims 2 to 4, The shear wall portion is A pair of wooden side members formed in a columnar shape, A shear wall main body provided between the pair of side members and joined to the pair of side members, It has a steel second reinforcing cap that is placed on and fixed to the upper and lower ends of the pair of side members and the shear wall main body, Each of the upper and lower second reinforcing caps A flat plate portion that contacts the end faces of the pair of side members and the end face of the shear wall main body, A side wall portion that is provided along the outer peripheral edge of the flat plate portion and is integrally formed with the flat plate portion and contacts the side surfaces of the pair of side members and the shear wall main body. A building frame structure characterized by this.

6. In the building frame structure according to claim 5, Each of the upper and lower steel beams and the pair of side members in the shear wall portion are connected by a wall connecting member provided between the steel beam and the side member, The wall connecting member is Steel bars inserted into each of a plurality of insertion holes formed in the upper and lower end faces of the side member, An adhesive layer composed of an adhesive filled between the insertion hole and the steel bar, It has nuts provided at the tip portions of the steel bars that protrude from the upper and lower end faces of the side member, In the flange of the upper and lower steel beams, a plurality of through holes through which the tip portions of the plurality of steel bars inserted into the plurality of insertion holes are inserted are formed, In the flat plate portion of the second reinforcing cap, a plurality of through holes through which the tip portions of the plurality of steel bars are inserted are formed, The nut is provided at the tip of the steel bar inserted through each of the plurality of through holes in both the flange and the flat plate portion. A building frame structure characterized by this.

7. In the building frame structure according to claim 6, The shear wall main body is composed of an architectural wood panel provided vertically between the pair of side members. A building frame structure characterized by this.

8. In the building frame structure according to claim 6, The shear wall main body is Upper and lower frame members provided across the upper ends and lower ends of the pair of side members, A vibration damping device having vibration damping means, disposed inside a rectangular frame formed by the pair of side members and the upper and lower frame members, The building frame structure, wherein the vibration damping device is joined to the pair of side members and the upper and lower frame members.

9. In the building frame structure according to claim 5, The shear wall portion further has a damper device having vibration damping means, provided between the second reinforcing cap fixed by covering the upper ends of the pair of side members and the shear wall main body and the upper steel beam. The building frame structure is characterized by this.

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