JP2022142955A - building frame - Google Patents

Abstract

[Problem] In a building frame formed by a gate-shaped frame having a large opening and a general section frame, the wall thickness can be adjusted even when the floor height of the general section changes or the load applied to the gate-shaped frame changes. To provide a building frame which does not need to be enlarged and does not require different fixing methods of outer walls between a gate type frame and a general part frame. A building frame (70) in which a gate-shaped frame (30) and a general part frame (60) are connected, the gate-shaped frame (30) comprising an upper chord member (21), a lower chord member (22), and a plurality of vertical members (23) connecting them. a ladder-shaped beam 20, two pillars 11, and a plurality of horizontal members 12 connecting them, supporting the ladder-shaped beam 20 and forming a portal frame 30 together with the ladder-shaped beam 20. A beam 50 with columns 10 and forming a general section frame 60 is connected to the upper chord 21 or the lower chord 22 . [Selection drawing] Fig. 1

Description

The present invention relates to building frames.

For built-in garages in buildings and shops on the first floor of buildings, beams made of shaped steel materials such as H-shaped steel with large cross sections are used to form a frame structure with large openings for garages and shops. A gate-type frame supported by ladder-type columns (ladder-type assembled columns) at both ends of the bridge may be applied. Here, the ladder-shaped pillar is a highly rigid pillar that includes two pillars and a plurality of horizontal members (binding members) that connect the pillars together.

On the side of the above-mentioned gate-shaped frame, the frame of the general section (general section frame) is connected, and the first floor is formed by the general section frame, and the floor beam of the second floor is formed by the gate-shaped frame and the general section frame. (or inter-floor torsion) is formed. At this time, the beams of the portal frame and the beams of the general section frame are connected to each other, so that the building frame consisting of the portal frame and the general section frame is formed on the same structure plane.

In the above building frame, when the floor height of the general frame increases, the height of the ladder-shaped columns forming the gate-shaped frame also increases, so the rigidity of the relatively elongated ladder-shaped columns decreases. will do. Therefore, if the size of the pillars forming the ladder-shaped pillars is increased in order to increase the reduced rigidity, the problem arises that the wall thickness of the gate-shaped frame increases.

On the other hand, in areas with heavy snowfall, the load acting on the beams that form the portal structure tends to increase. As a result, the size of the beam differs from that of the general frame, leading to the problem that it is necessary to use different fixing methods for the outer walls between the portal frame and the general frame.

In this way, in a building frame formed by a portal frame with a large opening and a general section frame, even if the floor height of the general section frame changes or the load applied to the portal frame changes, the wall There is a strong demand for a building frame that does not need to be thick and does not require different fixing methods for the outer walls of the portal frame and the general section frame.

Here, in Patent Document 1, a garage top surface portion forming the garage top surface, and a columnar shape having the property of a load-bearing wall, are arranged in a plurality of places overlapping the sides of the garage top surface portion in a plan view. A garage has been proposed which has a plurality of bearing members for supporting the parts.

JP 2010-209647 A

Patent Document 1 discloses a frame for a garage, but as described above, it does not solve the inherent problems of a building frame formed by a gate-type frame having a large opening and a general part frame. .

The present invention has been made in view of the above problems. To provide a building frame which eliminates the need to increase the wall thickness even when an applied load changes, and eliminates the need to change the fixing method of an outer wall between a gate type frame and a general part frame.

In order to achieve the above object, one aspect of the building frame according to the present invention is
A building frame in which a portal frame and a general section frame are connected,
The portal frame is
a ladder beam comprising an upper chord, a lower chord, and a plurality of longitudinal members connecting the upper chord and the lower chord;
a ladder-shaped pillar comprising at least two pillars and a plurality of horizontal members connecting the two pillars, and supporting the ladder-shaped beam to form a portal structure together with the ladder-shaped beam death,
A beam forming the general frame is connected to the upper chord member or the lower chord member.

According to this aspect, the gate-shaped frame has a ladder-shaped beam in addition to the ladder-shaped column, and the upper chord member or the lower chord member forming the ladder-shaped beam is connected to the beam of the general part frame, so that the upper chord When the beams of the general section are connected to the beams of the general section, even if the floor height of the general section is increased, only the upper chord members must be moved upward (change the length of the vertical member of the ladder-shaped beam). ), the problem that the ladder-shaped column becomes relatively elongated and the rigidity is lowered does not occur. In addition, since the ladder-shaped beams of the gantry frame generally have higher rigidity than the beams of the general frame, even if the load acting on the ladder-shaped beam of the gantry frame with a large opening increases, the The cross sections of the beams and the upper or lower chord members joined to them can be of the same size, and the fixing method of the outer walls can be the same between the portal frame and the general section frame.

Here, the “large opening” of the gate-type frame means, for example, an opening width of 4P to 10P (P indicates a module, and can be arbitrarily set according to the module design specifications, such as 800mm to 1100mm, such as a width of 910mm). means a large-span opening of about . Moreover, the ladder-shaped beam may be a Vierendiel structure beam in which the vertical members are vertical members, or may be a beam having a structure in which the vertical members include both vertical members and diagonal members. In either form, the upper chord members, the lower chord members, and the plurality of vertical members are welded or bolted to form an integral ladder-shaped beam that resists external force. Furthermore, the general part frame may share the ladder-type column at one end of the portal frame with the portal frame, and the other column of the general part frame may be provided with a load-bearing wall in addition to the general column. .

Another aspect of the building frame according to the present invention is
It is characterized in that the beams forming the general section frame and the upper chord member and/or the lower chord member, which are connected to each other, have the same cross section size.

According to this aspect, the beams forming the general section frame and the upper chord member and/or the lower chord member, which are connected to each other, have the same size in cross section, so that the portal frame and the general section frame are combined. The fixing method (fixing position) of the outer wall panels can be made common (same), and the size (and standard) of the beams applied to the building frame can be made common, thereby reducing the construction cost of the building frame.

Another aspect of the building frame according to the present invention is
A connecting member is provided at a position corresponding to the two pillars in the space between the upper chord member and the lower chord member.

According to this aspect, the connecting members are provided at the positions corresponding to the two pillars in the space between the upper chord member and the lower chord member. At or near the corners, it is possible to form a highly rigid ladder-shaped beam end structure in which the upper and lower chord members are integrated via a tie member, making it possible to withstand such large bending moments and shear forces. Become. Here, the joint member may be a vertical member that constitutes the ladder-shaped beam, or may be a member that is separate from the vertical member. In addition to the form in which two joints are attached at positions corresponding to the two pillars in the space between the upper and lower chords, one horizontally long jointer is installed in the space between the upper and lower chords. , may be attached so as to straddle two pillars. As with the vertical members, the connecting members are also joined to the upper chord member and the lower chord member by welding or bolting.

Another aspect of the building frame according to the present invention is
The pillars forming the ladder-shaped pillars and the pillars forming the general part frame have the same cross section size.

According to this aspect, the pillars forming the ladder-shaped pillars and the pillars forming the general frame have the same size cross section, so that the size (and standard) of the pillars applied to the building frame can be shared. As a result, the construction cost of the building frame can be reduced, and as mentioned above, the size (and standard) of the beams applied to the building frame can be shared, and the construction cost of the building frame can be further reduced. be possible.

Another aspect of the building frame according to the present invention is
A part of the space between the upper chord member and the lower chord member is provided for passage of a pipe.

According to this aspect, since a plurality of spaces separated by a plurality of vertical members exist between the upper chord member and the lower chord member forming the ladder-shaped beam, one or more of the spaces can be used in various ways. It can be used for piercing of piping (ventilation piping, electrical equipment piping, etc.), and there is no need to separately provide a sleeve for piercing piping unlike the conventional structure.

In another aspect of the building frame according to the present invention,
The portal frame is a frame forming a garage or a frame forming a store,
The lower chord member is characterized in that it also serves as a wind resistant frame.

According to this aspect, by applying the ladder-shaped beam, the lower chord member forming the ladder-shaped beam can also serve as the wind-resistant frame, eliminating the need to separately provide the wind-resistant frame. For example, when a shutter or other reinforcement is attached to a large opening in a built-in garage, a wind-resistant frame is required, and the lower chord member of the ladder-shaped beam also serves as this wind-resistant frame.

As can be understood from the above description, according to the building frame of the present invention, in the building frame formed by the gate-type frame having a large opening and the general part frame, the floor height of the general part frame changes, and the gate To provide a building frame which does not need to increase the wall thickness even when the load applied to the type frame changes, and does not require different fixing methods for the outer walls between the portal type frame and the general part frame. can.

1 is a front view of an example of a building frame according to an embodiment; FIG. It is a II-II arrow view of FIG. 1 and is a floor plan of the second floor of the building. It is a III-III arrow view of FIG. 2, and is an intermediate floor floor plan between the first and second floors of the building. FIG. 2 is an enlarged view of the IV section in FIG. 1, showing an enlarged corner of the portal frame. FIG. 2 is an enlarged view of the V portion of FIG. 1, showing an enlarged view of a portion of the ladder-shaped beam. FIG. 6 is a view in the direction of arrow VI in FIG. 5, and is a view of the ladder-shaped beam viewed from the longitudinal direction of the upper chord member and the lower chord member. It is an enlarged view of the VII part of FIG. 1, and is an enlarged view of the connection part of the H-shaped steel forming the upper chord. 8 is an arrow view in the direction of VIII in FIG. 7; FIG. FIG. 3 is a schematic diagram for explaining the connection structure between the beams (trunks) between the floors of the general frame structure and the outer wall panels of the first and second floors. FIG. 3 is a schematic diagram illustrating a connection structure between ladder-shaped beams between floors of a gate-shaped frame and exterior wall panels on the first and second floors. It is a schematic diagram explaining the connection structure of the large-sized beam (dorashi) between the floors of a gate-type frame and the outer wall panels of the first and second floors in a conventional example. FIG. 4 is a schematic diagram showing an exterior wall panel in a connection area between a portal frame and a general frame before a horizontal load acts upon it during an earthquake; FIG. 4 is a schematic diagram showing an exterior wall panel in a connection area between a portal frame and a general frame when a horizontal load during an earthquake acts. FIG. 10 is a schematic diagram showing an exterior wall panel in a connection region between a portal frame and a general section frame when a horizontal load during an earthquake acts in a conventional example.

Hereinafter, a building frame according to an embodiment will be described with reference to the accompanying drawings. In addition, in the present specification and drawings, substantially the same components may be denoted by the same reference numerals, thereby omitting duplicate descriptions.

[Building frame according to the embodiment]
An example of a building frame according to an embodiment will be described with reference to FIGS. 1 to 10. FIG. Here, FIG. 1 is a front view of an example of the building frame according to the embodiment, FIG. 2 is a view from the II-II direction in FIG. 1, which is a floor plan of the second floor of the building, and FIG. 2 is a view in the direction of arrow III-III in FIG. 2, which is an intermediate floor floor plan between the first and second floors of the building. 4 is an enlarged view of the IV section in FIG. 1, which is an enlarged view of the corner of the portal frame. FIG. 5 is an enlarged view of the V section in FIG. 1, which is a ladder-shaped structure. It is the figure which expanded a part of beam. 6 is a view in the direction of arrow VI in FIG. 5, showing the ladder-shaped beam viewed from the longitudinal direction of the upper and lower chord members, and FIG. 7 is an enlarged view of the VII section in FIG. 8 is an enlarged view of the connecting portion of the H-shaped steel forming the upper chord, and FIG. 8 is a view in the direction of arrow VIII in FIG.

The illustrated building frame 70 has a portal frame 30 and a general section frame 60 that are in the same structural plane and are connected to each other. In addition, the example of illustration shows one structural surface to which an exterior wall panel is attached in the multistory building of the 2nd floor or more. Here, the building having the building frame 70 is a building with a built-in garage, a building with a shop on the first floor, or the like. It is a frame that forms an opening or the like.

The portal frame 30 has a ladder-shaped beam 20 and two ladder-shaped columns 10 supporting the ladder-shaped beam 20 at both ends of the ladder-shaped beam 20 .

The ladder-shaped pillar 10 has two pillars 11 erected at intervals and a plurality of horizontal members 12 horizontally connecting the two pillars 11, and the horizontal members 12 extending in the horizontal direction are: They are arranged at intervals in the longitudinal direction (vertical direction) of the pillars 11 and welded to the two pillars 11 . In this specification, "welding" refers to groove welding (complete penetration welding, partial penetration welding), fillet welding, etc., depending on the strength and joining mode (rigid connection, pin connection) required for the connection. suitable welds selected by

A base plate 13 is welded to the lower end of the column 11 , and the base plate 13 and a concrete (reinforced concrete) foundation 75 are fixed by anchor bolts 18 . Note that the column 11 may be made of shaped steel such as H-shaped steel instead of the rectangular steel pipe.

The horizontal member 12 is made of steel plate and welded to the column 11 .

As shown in detail in FIG. 4 , a block-shaped connection fitting 15 is welded to the top end of the column 11 , and the connection fitting 15 is bolted to a lower chord member 22 forming a ladder-shaped beam 20 with a bolt 17 . be.

The length (height) t1 of the ladder-shaped column 10 is the length between the base 75 to which the column 11 is bolted and the lower chord member 22 of the ladder-shaped beam 20 . Further, the width t2 between the two ladder-shaped columns 10 forming the large opening (interval between the columns 11 outside the ladder-shaped columns 10) can be set within a range of about 4P to 10P. Any interval of 0.5P interval (4.5P, 5P, 5.5P, etc.) can be selected.

On the other hand, the ladder-shaped beam 20 has an upper chord member 21, a lower chord member 22, and a plurality of vertical members 23 connecting the upper chord member 21 and the lower chord member 22, and the vertical members 35 are vertical members. Ladder type beam. A ladder-shaped beam having a structure in which diagonal members are provided in addition to vertical members as vertical members, and the upper chord members 21 and the lower chord members 22 are connected by both the vertical members and the diagonal members may be used.

Both the upper chord member 21 and the lower chord member 22 are formed of H-shaped steel, and the vertical member 23 is a highly rigid member formed of a steel pipe, a square pipe, or the like. The ends are rigidly welded or bolted. The total height of the ladder-shaped beam 20 can be set to about 500 mm to 800 mm (eg, 600 mm), and when H-200 or H-250 is applied to the upper chord member 21 and lower chord member 22, the vertical member 23 has a height of 100 mm to 300 mm. A square pipe or the like is applied.

As shown in FIG. 1, since the width t2 between the two ladder-shaped columns 10 is wide, the upper chord member 21 is formed by connecting two H-section steels 21' via the connecting portion 21a, and the lower chord member 22 is also two H-section steels 22' connected via a connecting portion 22a. For example, by providing both connecting portions 21a and 22a at mutually displaced positions in the longitudinal direction of the ladder-shaped beam 20, it is possible to prevent the connecting portions 21a and 22a from becoming structurally weak portions of the ladder-shaped beam 20.

As shown in FIGS. 7 and 8, at the connection portion 21a (the connection portion 22a has the same configuration), the left and right H-section steels 21' are connected by bolts 21c via splice plates 21b. Both upper and lower flanges are rigidly joined by bolting with bolts 21e via a separate splice plate 21d.

As shown in FIGS. 1 and 5, reinforcing ribs 21f and 22f welded to the respective webs and upper and lower flanges are provided at the locations where the vertical members 23 are connected in the upper chord member 21 and the lower chord member 22. there is

As shown in FIG. 6, an end plate 25 is welded to the interior side of the lower chord member 22, and an end plate 27 is also attached to the end of a small beam 26 made of H-shaped steel for under-floor storage or an intermediate floor. The lower chord member of the ladder-shaped beam 20 and the small beam 26 extending toward the interior of the room are connected by welding and bolting the both end plates 25 and 27 .

As shown in detail in FIG. 4, two connecting members 29A and 29B are welded to the upper chord member 21 and the lower chord member 22 forming the ladder-shaped beam 20 at the corners of the portal frame 30, respectively. . More specifically, the two pillars 11 that form the ladder-shaped pillar 10 are bolted to the lower chord 22 via connection fittings 15, and the two pillars 11 are bolted directly above the bolted joints of the lower chord 22. Tie members 29A and 29B are welded to both the upper chord member 21 and the lower chord member 22. As shown in FIG.

In the illustrated example, one connecting member 29A is the same member as the vertical member 23 provided in the general portion of the ladder-shaped beam 20, and the other connecting member 29B is the same member as the connection fittings 15,85. Both of the two connecting members may be the vertical members 23 or may be the connecting fittings 15 .

In the portal structure 30, when a horizontal load during an earthquake acts on the structure, a large bending moment and shear force can act directly above the columns. , by connecting the upper chord member 21 and the lower chord member 22 with two connecting members 29A and 29B at positions corresponding to the two columns 11 of the ladder-shaped column 10, the entire ladder-shaped beam 20 is protected against bending moment and the like. It becomes possible to resist with (all beams).

As shown in FIG. 1 , beams 50 forming a general frame 60 are connected to upper chord members 21 of ladder-shaped beams 20 forming a portal frame 30 .

The general section frame 60 has a beam 50 and a load-bearing wall 40, and shares one ladder-shaped column 10 of the gate-shaped frame 30. As shown in FIG.

The load-bearing wall 40 includes a pair of pillars 41 and 42 erected with an interval, two dampers 46 attached to one of the pillars 41, a connecting member 44 connecting the two dampers 46, and two a brace 43; Each brace 43 is arranged to connect the intersection of the other column 42 with the beam 50 and the foundation 75 and the connecting member 44 .

The pillars 41 and 42 are made of square steel pipes, and a base plate 47 is welded to the lower end of each pillar 41 and 42. The pillars 41 and 42 are attached to the foundation by anchor bolts 18 via the respective base plates 47. Fixed.

The brace 43 is made of shaped steel such as H-shaped steel, angle steel, channel steel, square steel pipe, or the like.

One side of the damper 46 is welded to a reinforcing plate 45 made of flat steel or the like, and the reinforcing plate 45 is welded to the side of the column 41 made of square steel pipe. The two dampers 46 are connected by a connecting member 44, and the ends of the braces 43 are welded to projecting portions of the connecting member 44 outside (upper and lower sides) of the damper 46 attachment locations. ing.

The connecting member 44 is made of shaped steel such as H-shaped steel or channel steel, rectangular steel pipe, or the like, and has rigidity capable of transmitting the axial force from the brace 43 to the damper 46 .

In the building frame 70 shown in FIG. 1, the beams forming the gate-shaped frame 30 are the ladder-shaped beams 20, and the upper chords 21 forming the ladder-shaped beams 20 are connected to the beams 50 forming the general frame 60. Therefore, for example, when the floor height of the general section frame 60 is increased, in the portal frame 30, only the upper chord member 21 of the ladder-shaped beam 20 is moved upward (the length of the vertical member 23 of the ladder-shaped beam 20 is changing), the height of the ladder column 10 can be maintained at the current height t1. As a result, there is no problem that the rigidity of the ladder-shaped column 10 is lowered due to the height t1 of the ladder-shaped column 10 becoming higher than the current state (becoming elongated).

According to the verification by the present inventors, the initial floor height of the general frame 60 is 2630 mm (the length of the ladder-shaped column 10 is the same), and the floor height of the general frame 60 is increased to 2950 mm. However, by applying the ladder-shaped beam 20, it is possible to maintain the original length of the ladder-shaped column 10 (2630 mm). It has been proven to double.

Moreover, since the ladder-shaped beams 20 of the gate-shaped frame 30 have higher rigidity than the beams 50 of the general frame 60, the load acting on the ladder-shaped beams 20 of the gate-shaped frame 30 having a large opening can be applied to snowy areas and the like. , the upper chord members 21 joined to the beams 50 of the general frame 60 can have the same cross section as the beams 50, and the outer wall can be fixed between the portal frame 30 and the general frame 60. can be identical.

Here, the upper chord members 21 forming the ladder-shaped beams 20 and the beams 50 forming the general frame 60 are made of H-section steel of the same standard and having the same cross section size. As a result, as described above, the fixing method (fixing position) of the outer wall panels can be made common (the same), and furthermore, the size (and standard) of the beams applied to the building frame 70 can be made common. can reduce the construction cost of

In the illustrated example, the upper chord member 21 and the lower chord member 22 are formed of H-section steel having different sizes of cross sections, but both may be formed of H-section steel of the same size and of the same standard. , the upper chord member 21, the lower chord member 22, and the beams 50 of the general frame 60 are all made of H-shaped steel of the same size and standard, which further enhances the effect of reducing the construction cost.

Furthermore, the square steel pipes of the same standard and having the same cross section size are applied to the column 11 forming the ladder-shaped column 10 provided in the portal frame 30 and the columns 41 and 42 forming the load-bearing wall 40 provided in the general section frame 60. In combination with the uniform size and standard of the beams, it is possible to further reduce the construction cost of the building frame 70 .

1, in the ladder-shaped beam 20, a plurality of spaces 24 separated by a plurality of longitudinal members 23 are provided between the upper chord member 21 and the lower chord member 22. As shown in FIG. By providing a part of this space 24 for penetration of various types of piping (ventilation piping, electrical equipment piping, etc.), there is no need to separately provide a sleeve for piping penetration unlike the conventional structure.

If the gate-type frame 30 is a frame that forms a large opening of the built-in garage, the large opening of the built-in garage is equipped with a shutter or other reinforcement for the opening, and a wind-resistant frame is required, but the ladder-type beam 20 can be applied. Therefore, the lower chord member 22, which is a component thereof, can also serve as a wind resistant frame.

As shown in FIG. 2, in the building of the illustrated example, among the floor surfaces forming the second floor of the general section, immediately above the build-in garage, which is rectangular in plan view, there are ladder-shaped beams 20 between the four floors forming the build-in garage. is applied, the end of the small beam 64 that supports the floor of the second floor of the general part is attached to the ladder-shaped beam 20 on the indoor side, and the horizontal brace 65 is spanned over the horizontal structure surface. .

In addition, as shown in FIG. 3, ladder-shaped beams 20 are applied between the four floors directly above the build-in garage to provide underfloor storage and down-floor storage between the floor of the second floor and the ceiling of the build-in garage. can be formed. A horizontal brace 28 spans over the small beam 26 directly above the built-in garage connected to the lower chord member 22 of the ladder-shaped beam 20 .

Next, with reference to FIG. 9, the connection structure between the ladder-shaped beams and the exterior wall panels that constitute the building frame according to the embodiment will be described in comparison with the connection structure between the inter-floor beams and the exterior wall panels in the conventional example. do. Here, FIG. 9A is a schematic diagram for explaining the connection structure between the beams (trunks) between the floors of the general section frame and the outer wall panels of the first and second floors, and FIG. Fig. 10 is a schematic diagram for explaining the connection structure between the ladder-shaped beam in Fig. 1 and the outer wall panels on the first and second floors. FIG. 9C is a schematic diagram for explaining the connection structure between the large-sized beams (trunks) between the floors of the gate-type frame and the outer wall panels of the first and second floors in the conventional example.

In the general part frame shown in FIG. 9A, connection fittings 93 and 94 are attached to the upper and lower flanges of a beam 50 formed of H-shaped steel, and bolts 95 are attached to the outer wall panel of the second floor via the connection fittings 93 and 94. 91 and ground floor exterior wall panels 92 are attached.

In the building frame 70 according to the embodiment, since the upper chord member 21 of the ladder-shaped beam 20 forming the gate-shaped frame 30 shown in FIG. 9B is connected to the beam 50 of the general part frame 60 shown in FIG. In the frame 30, similarly to the general frame 60, the connection fittings 93 and 94 are attached to the upper and lower flanges of the upper chord member 21 formed of H-section steel of the same size as the beam 50, and the connection fittings 93 and 94 are attached. An outer wall panel 91 on the second floor and an outer wall panel 92 on the first floor are attached with bolts 95 through the holes.

Thus, in the building frame 70 according to the embodiment, the fixed positions of the exterior wall panels can be shared between the portal frame 30 and the general part frame 60 . In addition, as shown in FIG. 9B, since there is a space 24 between the upper chord member 21 and the lower chord member 22, the worker can reach the space 24 from the inside of the room to attach the outer wall panel. .

On the other hand, in the conventional example, as shown in FIG. 9C, a beam 21A made of a large H-section steel is applied to the portal frame in contrast to the general section frame 60 shown in FIG. 9A. Connecting metal fittings 93 and 94 are attached to the upper and lower flanges of 21A, and the outer wall panel 91 on the second floor and the outer wall panel 92 on the first floor are attached with bolts 95 via the connecting metal fittings 93 and 94.

As is clear from a comparison of FIGS. 9A and 9C, the large difference in size between the beams 50 and 21A results in different fixing positions of the exterior wall panels between the portal frame and the general section frame.

Next, with reference to FIG. 10, the rocking behavior of the exterior wall panels when a horizontal load during an earthquake acts in the connection area between the portal frame and the general frame of the building frame according to the embodiment is shown in a conventional example. The rocking behavior of the outer wall panels in the connection area between the portal frame and the general frame will be explained in comparison. Here, FIG. 10A is a schematic diagram showing the outer wall panel in the connection area between the portal frame and the general frame before the horizontal load during an earthquake acts, and FIG. is a schematic diagram showing an outer wall panel in the connection area of the portal frame and the general section frame. FIG. 10C is a schematic diagram showing an exterior wall panel in a connection region between a portal structure and a general structure when a horizontal load during an earthquake acts in a conventional example.

In the building frame before the horizontal load during an earthquake acts as shown in FIG. 10A, the outer wall panels 92 and 91 on the first and second floors are installed side by side with vertical and horizontal joints. When a horizontal load H during an earthquake acts on this building frame, as shown in FIG. Since the exterior wall panels 91 and 92 are fixed to the beams 50 of the substructure in common, the rocking behavior of the exterior wall panels 91 and 92 is approximately the same, so there is no danger of the exterior wall panels 91 and 92 colliding with each other.

On the other hand, in the conventional example, as shown in FIG. , the rocking behavior of the outer wall panels 91, 92 are different, and a collision S may occur at a part of the outer wall panels 91, 92, which may lead to the damage of the outer wall panels 91, 92.

In this way, according to the building frame 70, since the outer wall panels 91 and 92 are fixed to the upper chord members 21 of the ladder-shaped beams 20 and the beams 50 of the general frame that are connected to each other in common, the earthquake It is possible to effectively prevent damage caused by the collision between the outer wall panels 91 and 92 when the horizontal load H is applied.

It should be noted that other embodiments may be possible in which other components are combined with the configurations described in the above embodiments, and the present invention is not limited to the configurations shown here. Regarding this point, it is possible to change without departing from the gist of the present invention, and it can be determined appropriately according to the application form.

10: Ladder-shaped column 11: Column 12: Horizontal member 13: Base plate 15: Connection fitting 17: Bolt 18: Anchor bolt 20: Ladder-shaped beam 21: Upper chord member 21A: Beam (H-shaped steel with a large size)
21': H-shaped steel 21a: connecting portion 21b, 21d: splice plate 21c, 21e: bolt 21f: reinforcing rib 22: lower chord member 22': H-shaped steel 22a: connecting portion 22f: reinforcing rib 23: longitudinal member 24: space 25: End Plate 26: Small Beam 27: End Plate 28: Horizontal Brace 29A, 29B: Joint 30: Portal Frame 40: Bearing Wall 41, 42: Column 43: Brace 44: Connection Material 45: Reinforcement Plate 46: Damper 47: Base plate 50: Beam 60: General frame 64: Small beam 65: Horizontal brace 70: Building frame 75: Foundation 80: Column 85: Connection fitting 87: Bolt 91, 92: External wall panel 93, 94: Connection fitting 95: Bolt H: Horizontal load S: Collision

Claims (6)

A building frame in which a portal frame and a general section frame are connected,
The portal frame is
a ladder beam comprising an upper chord, a lower chord, and a plurality of longitudinal members connecting the upper chord and the lower chord;
a ladder-shaped column comprising at least two columns and a plurality of horizontal members connecting the two columns, supporting the ladder-shaped beam and forming a portal structure together with the ladder-shaped beam death,
A building frame, wherein the beams forming the general frame are connected to the upper chord member or the lower chord member. 2. Building according to claim 1, characterized in that the beams forming the general part frame and the upper chord and/or the lower chord, which are interconnected, have cross sections of the same size. Structure. The building frame according to claim 1 or 2, wherein a joint member is provided at a position corresponding to the two pillars in the space between the upper chord member and the lower chord member. The building frame according to any one of claims 1 to 3, characterized in that the columns forming the ladder-shaped columns and the columns forming the general section frame have the same cross section size. . 5. The building frame according to any one of claims 1 to 4, characterized in that part of the space between the upper chord and the lower chord is provided for passage of piping. The portal frame is a frame forming a garage or a frame forming a store,
The building frame according to any one of claims 1 to 5, characterized in that said lower chord member also serves as a wind resistant frame.

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