Floor structure and building

Abstract

To provide a building floor structure and a building that are capable of suppressing the quality of connecting members connecting beams from becoming excessive while ensuring the rigidity of the floor of the building against horizontal loads.SOLUTION: In a building 10, one end 28C of a first connecting member 28 is pin-joined to one beam 20, and the other end 28D of the first connecting member 28 is pin-joined to the other beam 20. Further, one end 30C of a second connecting member 30 is pin-joined to the other beam 20, the other end 30D of the second connecting member 30 is pin-joined to the one beam 20, and a central portion 30E of the second connecting member 30 is pin-joined to a central portion 28E of the first connecting member 28.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a floor structure of a building and a building. [Background technology]

[0002] The following Patent Document 1 discloses an invention related to a building. In this building, rigid floor plates (connecting members) are provided on each of the adjacent beams, and by connecting these rigid floor plates, the rigidity of the floor of the building against horizontal loads is ensured. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-209616 Summary of the Invention [Problem to be solved by the invention]

[0004] In the invention described in Patent Document 1, the load transmitted from the beam side is supported by the rigid floor plate, but it is thought that the magnitude of the load caused by this load differs between the connection parts between the rigid floor plates and the connection parts between the rigid floor plate and the beam. If the thickness of the rigid floor plate is set based on the point on the rigid floor plate where the load is greatest, it is thought that the rigid floor plate as a whole will have excessive quality.

[0005] Taking the above facts into consideration, the present invention aims to provide a floor structure and a building that can ensure the rigidity of the floor of the building against horizontal loads while preventing the quality of the connecting members that connect the beams from becoming excessively high. [Means for solving the problem]

[0006] The floor structure of a building according to the first aspect supports floor panels that form part of the floor of the building from the lower side of the building and includes a pair of beams extending parallel to each other, a first arm whose thickness direction is the building height direction, and a second arm extending from the first arm in the building height direction, the first connecting member extending in a direction intersecting the beams when viewed from the building height direction and having one end pin-joined to one of the beams and the other end pin-joined to the other beam, a third arm whose thickness direction is the building height direction and a fourth arm extending from the third arm in the building height direction, the second connecting member extending in a direction intersecting the beams and the first connecting member when viewed from the building height direction, having one end pin-joined to the other beam and the other end pin-joined to the one beam, and a central portion pin-joined to the central portion of the first connecting member.

[0007] In the floor structure of a building according to the first aspect, floor panels that form part of the floor of the building are supported from below the building by a pair of beams that extend parallel to each other.

[0008] In order to prevent the load from concentrating on one of the pair of beams when a horizontal load is input to a building, it is preferable that the horizontal load can be transmitted between the pair of beams. In this regard, it is conceivable to provide a rigid floor plate on each of the pair of beams and connect these rigid floor plates together to create a configuration that allows the horizontal load to be transmitted between the pair of beams.

[0009] However, in such a configuration, if the thickness of the rigid floor plate is set based on the point on the rigid floor plate that is subjected to the greatest load, it is conceivable that the rigid floor plate as a whole will be of excessive quality.

[0010] In this embodiment, a pair of beams are connected via a first connecting member and a second connecting member. Specifically, the first connecting member extends in a direction intersecting the beams when viewed from the building height direction. One end of the first connecting member is pin-connected to one beam, and the other end of the first connecting member is pin-connected to the other beam.

[0011] On the other hand, the second connecting member extends in a direction intersecting the beams and the first connecting member when viewed from the building height direction, and one end of the second connecting member is pin-connected to the other beam, the other end of the second connecting member is pin-connected to the one beam, and the center of the second connecting member is pin-connected to the center of the first connecting member.

[0012] Therefore, in this embodiment, when a horizontal load is transmitted between a pair of beams via the first connecting member and the second connecting member, tensile or compressive loads mainly act on the first connecting member and the second connecting member, and therefore the cross-sectional shapes of these connecting members can be made constant in their extension direction.

[0013] The first connecting member has a first arm whose thickness direction is the building height direction and a second arm extending from the first arm in the building height direction, and the second connecting member has a third arm whose thickness direction is the building height direction and a fourth arm extending from the third arm in the building height direction. This makes it possible to prevent the first connecting member and the second connecting member from buckling due to the load transmitted from the beam.

[0014] The floor structure of a building according to the second aspect is the floor structure of a building according to the first aspect, wherein the beam includes an upper flange portion that constitutes the upper part of the beam on the building side, a lower flange portion that constitutes the lower part of the beam on the building side, and a web portion that connects the upper flange portion and the lower flange portion in the height direction of the building, and the floor panel is arranged on the upper flange portion, and the first connecting member and the second connecting member connect the lower flange portion of the one beam to the lower flange portion of the other beam.

[0015] In the floor structure of a building according to the second aspect, the beam is configured to include an upper flange portion that constitutes the upper part of the building, a lower flange portion that constitutes the lower part of the building, and a web portion that connects the upper flange portion and the lower flange portion in the height direction of the building.

[0016] The floorboards are placed on the upper flanges of the beams. The first and second connecting members connect the lower flanges of one beam to the lower flanges of the other beam. Therefore, in this embodiment, a space can be secured between the mounting members of the floorboards and the first and second connecting members.

[0017] The floor structure of a building according to the third aspect is the floor structure of a building according to the second aspect, wherein at one end of the first connecting member, the first piece is arranged on the lower flange portion of one of the beams via a first spacer having the same thickness as the third piece, and at the other end of the first connecting member, the first piece is arranged on the lower flange portion of the other beam via a second spacer having the same thickness as the third piece, and at one end of the second connecting member, the third piece is arranged on the lower flange portion of the other beam in contact with the lower flange portion, and at the other end of the second connecting member, the third piece is arranged on the lower flange portion of the one of the beams in contact with the lower flange portion, and at the connection point between the first connecting member and the second connecting member, a recess is formed in the fourth piece into which the first connecting member can be inserted, and the first piece is arranged on the third piece in contact with the third piece.

[0018] In a building floor structure according to a third aspect, at one end of a first connecting member, the first piece of the first connecting member is disposed on the lower flange of one beam via a first spacer having the same thickness as the third piece of the second connecting member, while at the other end of the first connecting member, the first piece of the first connecting member is disposed on the lower flange of the other beam via a second spacer having the same thickness as the third piece.

[0019] Furthermore, at one end of the second connecting member, the third arm is disposed on and in contact with the lower flange of the other beam. Meanwhile, at the other end of the second connecting member, the third arm is disposed on and in contact with the lower flange of one beam. Therefore, the lower surface of the first arm and the upper surface of the third arm are positioned at the same position in the building height direction.

[0020] At the connection point between the first and second connecting members, the fourth arm has a recess into which the first connecting member can be inserted, and the first connecting member is inserted into the recess. At this time, the first arm of the first connecting member is placed on the third arm of the second connecting member in contact with the third arm. As a result, the first and second connecting members can be placed on the lower flange.

[0021] In addition, the first connecting member and the second connecting member support the load from the beam side in the area between the pin joints, thereby preventing the area where the recess is provided from becoming a weak area.

[0022] A floor structure of a building according to a fourth aspect is the floor structure of the building according to the third aspect, wherein the first spacer and the second spacer are joined to the first piece portion.

[0023] In the building floor structure of the fourth aspect, the first spacer and the second spacer are joined to the first piece portion of the first connecting member, so that the first spacer, the second spacer and the first connecting member can be installed together on the beam.

[0024] A building according to the fifth aspect has the floor structure of a building according to any one of the first to fourth aspects, and is provided with a plurality of pillars supporting the beams, and the pillars are arranged so as not to overlap with one end of the first connecting member, the other end of the first connecting member, one end of the second connecting member, and the other end of the second connecting member when viewed from the height direction of the building.

[0025] In a building according to a fifth aspect, a pair of beams is supported by a plurality of columns. Furthermore, the columns are arranged so as not to overlap one end of the first connecting member, the other end of the first connecting member, one end of the second connecting member, and the other end of the second connecting member when viewed from the building height direction. This prevents the columns from interfering with the work of attaching the first connecting member and the second connecting member to the beams. [Effects of the Invention]

[0026] As described above, the floor structure of a building according to the first aspect has the excellent effect of ensuring the rigidity of the floor of the building against horizontal loads while preventing the quality of the connecting members connecting the beams from becoming excessively high quality.

[0027] The floor structure of a building according to the second aspect has the excellent effect of preventing the connecting member connecting the pair of beams from interfering with the mounting member of the floorboard.

[0028] The floor structure of a building according to the third aspect has the excellent effect of preventing the expansion of the space required for installing the connecting member that connects a pair of beams, while allowing the connecting member to stably support the horizontal load acting on the floor of the building.

[0029] The floor structure of a building according to the fourth aspect has the excellent effect of preventing the installation work of the connecting member that connects a pair of beams from becoming complicated.

[0030] The building according to the fifth aspect has the excellent effect of preventing the installation work of the connecting members that connect a pair of beams from becoming complicated due to the pillars of the building. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a plan cross-sectional view (a cross-sectional view showing a state cut along line 1-1 in FIG. 2) that schematically shows the relationship between beams and connecting members in a building to which the floor structure of the building according to this embodiment is applied. [Figure 2]1 is a side view (viewed in two directions of arrows in FIG. 1) that schematically shows the configuration of beams, connecting members, and columns in a building to which the floor structure of the building according to the present embodiment is applied. [Figure 3] FIG. 4 is a plan view schematically showing the configuration of one of the connecting members according to the present embodiment. [Figure 4] 4 is a side view (view in the direction of arrow 4 in FIG. 3) that schematically shows the configuration of one of the connecting members according to the present embodiment. FIG. [Figure 5] FIG. 10 is a plan view schematically showing the configuration of the other connecting member according to the embodiment. [Figure 6] 6 is a side view (view taken in the direction of arrow 6 in FIG. 5) that schematically shows the configuration of the other connecting member according to the present embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0032] An example of an embodiment of a building floor structure according to the present invention and a building to which this floor structure is applied will be described below with reference to Figures 1 to 6. As shown in Figures 1 and 2, a "building 10" to which the floor structure of a building according to this embodiment is applied is constructed using a steel frame construction method, and is configured as a multi-story house including a lower floor 12 and an upper floor 14.

[0033] The skeleton 16 of the building 10 is composed of a plurality of "columns 18" and a plurality of "beams 20." More specifically, the columns 18 are erected at predetermined intervals on a foundation (not shown), and form the portion of the skeleton 16 on the lower floor 12 side.

[0034] On the other hand, the beams 20 are bridged between the upper ends of the columns 18 and are supported at their upper ends from below the building, with the beams 20 being located at the boundary between the lower floor 12 and the upper floor 14. The beams 20 function as ceiling girders on the lower floor 12 and as floor girders on the upper floor 14.

[0035] In detail, the pillar 18 is composed of a rectangular cylindrical main body extending in the vertical direction of the building, and a base plate which is rectangular in plan view and joined to the upper and lower ends of the main body by a joining means such as welding.

[0036] On the other hand, the beam 20 is made of I-beam steel and includes an "upper flange portion 20A" that forms the upper side of the building, a "lower flange portion 20B" that forms the lower side of the building, and a "web portion 20C" that connects the upper flange portion 20A and the lower flange portion 20B in the height direction of the building. In addition, the upper flange portion 20A and the lower flange portion 20B have insertion holes 22 formed at a predetermined pitch on two straight lines that extend in the longitudinal direction of the beam 20 and are spaced apart in the lateral direction of the beam 20.

[0037] Furthermore, a "floor panel 26" made of lightweight aerated concrete, which constitutes part of the "floor section 24" of the upper floor section 14, is disposed on the upper flange section 20A of the beam 20. A plurality of insertion holes (not shown) corresponding to the insertion holes 22 are formed in this floor panel 26, and the floor panel 26 is attached to the beam 20 via attachment members such as bolts (not shown) that are inserted into the insertion holes 22 of the beam 20 and the insertion holes of the floor panel 26.

[0038] In this embodiment, a pair of beams 20 extending parallel to each other and spaced apart by a predetermined distance or less (for example, 500 mm or less) are connected by a "first connecting member 28" and a "second connecting member 30." The configurations of the first connecting member 28 and the second connecting member 30 will be described in detail below.

[0039] In the following, the longitudinal direction of the beam 20 connected by the first connecting member 28 and the second connecting member 30 will be referred to as the first direction, the lateral direction of the beam 20 will be referred to as the second direction, and the building height direction will be referred to as the third direction. In each drawing, the first direction is indicated by arrow X, the second direction is indicated by arrow Y, and the third direction is indicated by arrow Z.

[0040] As shown in Figures 3 and 4, the first connecting member 28 is made up of angle steel, and when attached to a pair of beams 20, it is configured to include a "lower wall portion 28A" as a first piece whose plate thickness direction is the third direction, and a "side wall portion 28B" as a second piece extending from the peripheral portion extending in the longitudinal direction of the lower wall portion 28A to one side in the third direction (upward in the building height direction).

[0041] More specifically, insertion holes 32 are provided in the lower wall portion 28A at "one end portion 28C," "the other end portion 28D," and "the central portion 28E" of the first connecting member 28. Furthermore, at one end portion 28C and the other end portion 28C, "washers 34" are arranged on the surface of the lower wall portion 28A on the other side in the third direction so as to surround the insertion holes 32 when viewed from the third direction, and the washers 34 are joined to the lower wall portion 28A via joints (not shown) made by welding or the like. The washer 34 arranged on the one end portion 28C side functions as a first spacer, and the washer 34 arranged on the other end portion 28D side functions as a second spacer.

[0042] 1, one end 28C of the first connecting member 28 is disposed on one side in the third direction of the portion of the web portion 20C on the other side in the second direction of the lower flange portion 20B of the beam 20 on one side in the second direction. The one end 28C is attached to the beam 20 via an attachment member 36, such as a bolt, inserted through the insertion hole 32 and the insertion hole 22 of the beam 20, with the washer 34 on the one end 28C side abutting against the upper surface of the lower flange portion 20B.

[0043] On the other hand, the other end 28D of the first connecting member 28 is located on the other side in the first direction and the other side in the second direction relative to the one end 28C, and is disposed on one side in the third direction of the part of the lower flange portion 20B of the beam 20 on the other side in the second direction that is on one side in the second direction of the web portion 20C. The other end 28D is attached to the beam 20 via the attachment member 36 inserted through the insertion hole 32 and the insertion hole 22 of the beam 20, with the washer 34 on the other end 28D side abutting against the upper surface of the lower flange portion 20B. In other words, the first connecting member 28 extends in a direction intersecting the beam 20 when viewed from the third direction. In this embodiment, as an example, the angle formed between the extension direction of the first connecting member 28 and the extension direction of the beam 20 is set to 45°.

[0044] As shown in Figures 5 and 6, the second connecting member 30 is made up of angle steel, and when attached to a pair of beams 20, it is configured to include a "lower wall portion 30A" as a third arm whose plate thickness direction is the third direction, and a "side wall portion 30B" as a fourth arm extending from the peripheral portion extending in the longitudinal direction of the lower wall portion 30A to one side in the third direction (upward in the building height direction).

[0045] More specifically, insertion holes 38 are provided in the lower wall portion 30A at the "one end portion 30C," the "other end portion 30D," and the "center portion 30E" of the second connecting member 30. The thickness of the lower wall portion 30A is set to be the same as the thickness of the washer 34.

[0046] 1, one end 30C of the second connecting member 30 is disposed on one side in the third direction of a portion of the web portion 20C on one side in the second direction of the lower flange portion 20B of the beam 20 on the other side in the second direction. The one end 30C is attached to the beam 20 via an attachment member 40, such as a bolt, inserted through the insertion hole 38 and the insertion hole 22 of the beam 20, with the lower surface of the lower wall portion 30A abutting against the upper surface of the lower flange portion 20B. Note that the one end 28C of the first connecting member 28 and the one end 30C of the second connecting member 30 are disposed at the same position in the first direction.

[0047] On the other hand, the other end 30D of the second connecting member 30 is located on the other side in the first direction and on one side in the second direction with respect to the one end 30C, and is also arranged on one side in the third direction of the part of the web portion 20C on the other side in the second direction of the lower flange portion 20B of the beam 20 on one side in the second direction. The other end 30D is attached to the beam 20 via an attachment member 40 inserted through the insertion hole 38 and the insertion hole 22 of the beam 20, with the lower surface of the lower wall portion 30A abutting against the upper surface of the lower flange portion 20B. The other end 28D of the first connecting member 28 and the other end 30D of the second connecting member 30 are arranged at the same position in the first direction.

[0048] That is, the second connecting member 30 extends in a direction intersecting the beam 20 and the first connecting member 28 when viewed from the third direction. In the present embodiment, as an example, the angle formed between the extension direction of the second connecting member 30 and the extension direction of the beam 20 is set to 45°, and the angle formed between the extension direction of the second connecting member 30 and the extension direction of the first connecting member 28 is set to 90°.

[0049] 6, in the central portion 30E, the side wall portion 30B is formed with a "recess 42" that is open to one side in the third direction and into which the first connecting member 28 can be inserted. Then, as shown in FIGS. 1 and 2, the central portion 28E of the first connecting member 28 is inserted into the recess 42 from one side in the third direction.

[0050] Furthermore, in central portions 28E and 30E, with lower wall portion 28A in contact with lower wall portion 30A from one side in the third direction, lower wall portion 28A and lower wall portion 30A are connected via attachment members 44, such as bolts, inserted through insertion holes 32 and 38. That is, in this embodiment, the connection between first connecting member 28 and beam 20, the connection between second connecting member 30 and beam 20, and the connection between first connecting member 28 and second connecting member 30 are performed by pin joints. Note that in FIG. 2 , attachment members 36, 40, and 44 are not shown in order to make it easier to understand the positional relationship between beam 20, first connecting member 28, and second connecting member 30.

[0051] Also, as shown in Figure 1, the positions of one end 28C of the first connecting member 28, the other end 28D of the first connecting member 28, one end 30C of the second connecting member 30, and the other end 30D of the second connecting member 30 are set at positions that do not overlap with the pillar 18 when viewed from the third direction.

[0052] <Actions and Effects of This Embodiment> Next, the operation and effects of this embodiment will be described.

[0053] In this embodiment, as shown in FIG. 2, a floor plate 26 that constitutes a part of the floor portion 24 is supported from the other side in the third direction by a pair of beams 20 that extend parallel to each other.

[0054] Incidentally, when a horizontal load is input to the building 10, in order to prevent the load from concentrating on one of the pair of beams 20, it is preferable that the horizontal load be transferable between the pair of beams 20. In this regard, it is conceivable to provide a rigid floor plate on each of the pair of beams 20 and connect these rigid floor plates together to create a configuration that allows the horizontal load to be transferred between the pair of beams 20.

[0055] However, in such a configuration, if the thickness of the rigid floor plate is set based on the point on the rigid floor plate that is subjected to the greatest load, it is conceivable that the rigid floor plate as a whole will be of excessive quality.

[0056] 1, in this embodiment, a pair of beams 20 are connected via a first connecting member 28 and a second connecting member 30. Specifically, the first connecting member 28 extends in a direction intersecting the beams 20 when viewed from the third direction. One end 28C of the first connecting member 28 is pin-joined to one beam 20, and the other end 28D of the first connecting member 28 is pin-joined to the other beam 20.

[0057] On the other hand, the second connecting member 30 extends in a direction intersecting the beams 20 and the first connecting member 28 when viewed from the third direction. One end 30C of the second connecting member 30 is pin-joined to the other beam 20, the other end 30D of the second connecting member 30 is pin-joined to one beam 20, and a central portion 30E of the second connecting member 30 is pin-joined to a central portion 28E of the first connecting member 28.

[0058] Therefore, in this embodiment, when a horizontal load is transmitted between a pair of beams 20 via the first connecting member 28 and the second connecting member 30, a tensile load or a compressive load mainly acts on the first connecting member 28 and the second connecting member 30, and therefore the cross-sectional shapes of these connecting members can be made constant in their extension direction.

[0059] Furthermore, the first connecting member 28 includes a bottom wall portion 28A whose thickness direction is the third direction and a side wall portion 28B extending from the bottom wall portion 28A in the third direction, and the second connecting member 30 includes a bottom wall portion 30A whose thickness direction is the third direction and a side wall portion 30B extending from the bottom wall portion 30A in the third direction. Therefore, buckling of the first connecting member 28 and the second connecting member 30 due to the load transmitted from the beam 20 can be suppressed. Therefore, in this embodiment, the rigidity of the floor portion 24 of the building 10 against horizontal loads can be ensured, while the quality of the first connecting member 28 and the second connecting member 30 connecting the beams 20 can be suppressed from becoming excessive.

[0060] In addition, in this embodiment, as also shown in Figure 2, the beam 20 is configured to include an upper flange portion 20A that forms one side of the beam 20 in the third direction, a lower flange portion 20B that forms the other side of the beam 20 in the third direction, and a web portion 20C that connects the upper flange portion 20A and the lower flange portion 20B in the third direction.

[0061] The floorboards 26 are disposed on the upper flange portions 20A of the beams 20. The first connecting member 28 and the second connecting member 30 connect the lower flange portion 20B of one beam 20 to the lower flange portion 20B of the other beam 20. Therefore, in this embodiment, a space can be secured between the mounting members of the floorboards 26 and the first connecting member 28 and the second connecting member 30. Therefore, in this embodiment, the first connecting member 28 and the second connecting member 30, which connect the pair of beams 20, can be prevented from interfering with the mounting members of the floorboards 26.

[0062] 1, in this embodiment, at one end 28C of the first connecting member 28, the lower wall portion 28A is disposed on the lower flange portion 20B of one beam 20 via a washer 34 having the same thickness as the lower wall portion 30A of the second connecting member 30. Meanwhile, at the other end 28D of the first connecting member 28, the lower wall portion 28A is disposed on the lower flange portion 20B of the other beam 20 via the washer 34.

[0063] Furthermore, at one end 30C of the second connecting member 30, the lower wall portion 30A is disposed on and in contact with the lower flange portion 20B of the other beam 20. Meanwhile, at the other end 30D of the second connecting member 30, the lower wall portion 30A is disposed on and in contact with the lower flange portion 20B of the one beam 20. Therefore, in the third direction, the lower surface of the lower wall portion 28A and the upper surface of the lower wall portion 30A are positioned at the same position.

[0064] At the connection point between the first connecting member 28 and the second connecting member 30, a recess 42 into which the first connecting member 28 can be inserted is formed in the side wall portion 30B, and the first connecting member 28 is inserted into the recess 42. At this time, the lower wall portion 28A of the first connecting member 28 is disposed on the lower wall portion 30A of the second connecting member 30 in a state of contact with the lower wall portion 30A. As a result, the first connecting member 28 and the second connecting member 30 can be disposed on the lower flange portion 20B.

[0065] Furthermore, since the first connecting member 28 and the second connecting member 30 support the load from the beam 20 side in the portion between the pin-jointed portions, it is possible to prevent the portion where the recess 42 is provided from becoming a weak portion. Therefore, in this embodiment, it is possible to prevent the space required to install the first connecting member 28 and the second connecting member 30 that connect the pair of beams 20 from increasing, and to enable the first connecting member 28 and the second connecting member 30 to stably support the horizontal load acting on the floor portion 24.

[0066] Furthermore, in this embodiment, the pair of washers 34 are joined to the lower wall portion 28A of the first connecting member 28, so the washers 34 and the first connecting member 28 can be installed together on the beam 20. Therefore, in this embodiment, it is possible to prevent the installation work of the first connecting member 28 and the second connecting member 30 from becoming complicated.

[0067] Additionally, in this embodiment, the pair of beams 20 are supported by a plurality of pillars 18. Furthermore, when viewed from the third direction, the pillars 18 are arranged so as not to overlap one end 28C of the first connecting member 28, the other end 28D of the first connecting member 28, one end 30C of the second connecting member 30, and the other end 30D of the second connecting member 30. This prevents the pillars 18 from interfering with the work of attaching the first connecting member 28 and the second connecting member 30 to the beams 20, and as a result, prevents the pillars 18 from making the installation work of the first connecting member 28 and the second connecting member 30 more complicated.

[0068] <Supplementary explanation of the above embodiment> (1) In the above-described embodiment, the first connecting member 28 and the second connecting member 30 are attached to the upper surface of the lower flange portion 20B of the beam 20. However, the attachment locations of the first connecting member 28 and the second connecting member 30 are not limited to this. For example, the first connecting member 28 and the second connecting member 30 can be attached to the upper flange portion 20A of the beam 20 by forming a recess in the floorboard 26 into which a portion of the attachment member 36 or the attachment member 40 can be accommodated. Furthermore, depending on the configuration of the ceiling supported by the beam 20, the first connecting member 28 or the second connecting member 30 can also be attached to the lower surface of the lower flange portion 20B. Note that, if such a configuration is adopted, the recess 42 does not need to be provided in the second connecting member 30.

[0069] (2) In addition, in the above-described embodiment, mounting members such as bolts were used for the pin joints between the first connecting member 28 and the second connecting member 30, but rivets or the like may also be used for this pin joint, or a welded joint may be used as long as it can be considered a pin joint. [Explanation of symbols]

[0070] 10 Building 18 pillars 20 beams 20A Upper flange 20B Lower flange 20C Web section 24 Floor 26 Floorboards 28 First connecting member 28A Lower wall part (first piece) 28B Side wall part (second piece) 28C One end 28D Other end 28E Central part 30 Second connecting member 30A Lower wall part (3rd piece) 30B Side wall part (4th piece) 30C One end 30D Other end 30E central part 34 Washer (first spacer, second spacer) 42 recess

Claims

1. a pair of beams that support floor panels constituting a part of the floor of the building from the lower side of the building and extend parallel to each other; a first connecting member including a first arm portion whose plate thickness direction is the building height direction and a second arm portion extending from the first arm portion in the building height direction, the first connecting member extending in a direction intersecting the beams when viewed from the building height direction, one end of the first connecting member being pin-joined to one of the beams and the other end of the first connecting member being pin-joined to the other beam; a second connecting member including a third arm portion whose plate thickness direction is the building height direction and a fourth arm portion extending from the third arm portion in the building height direction, the second connecting member extending in a direction intersecting the beams and the first connecting member when viewed from the building height direction, one end of which is pin-joined to the other beam, the other end of which is pin-joined to the one beam, and a center of which is pin-joined to the center of the first connecting member; The floor structure of a building having:

2. The beam is configured to include an upper flange portion that constitutes a portion of the beam on the upper side of the building, a lower flange portion that constitutes a portion of the beam on the lower side of the building, and a web portion that connects the upper flange portion and the lower flange portion in the height direction of the building, The floor plate is disposed on the upper flange portion, and The first connecting member and the second connecting member connect the lower flange portion of the one beam to the lower flange portion of the other beam. The floor structure of a building according to claim 1.

3. At the one end of the first connecting member, the first piece is disposed on the lower flange portion of one of the beams via a first spacer having the same thickness as the third piece, and at the other end of the first connecting member, the first piece is disposed on the lower flange portion of the other beam via a second spacer having the same thickness as the third piece, At the one end of the second connecting member, the third piece is disposed on the lower flange portion of the other beam in a state of contact with the lower flange portion, and at the other end of the second connecting member, the third piece is disposed on the lower flange portion of the one beam in a state of contact with the lower flange portion, At a connection point between the first connecting member and the second connecting member, a recess into which the first connecting member can be inserted is formed in the fourth piece, and the first piece is disposed on the third piece in a state of contact with the third piece. The floor structure of a building according to claim 2.

4. the first spacer and the second spacer are joined to the first piece portion; The floor structure of a building according to claim 3.

5. The floor structure of a building according to any one of claims 1 to 4 is applied, a plurality of columns supporting the beam; When viewed from the building height direction, the pillar is arranged so as not to overlap with the one end of the first connecting member, the other end of the first connecting member, the one end of the second connecting member, and the other end of the second connecting member. building.

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