JP4101987B2 - Unit building upper and lower floor joint structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint structure for upper and lower floors of a unit building.
[0002]
[Prior art]
Conventionally, as a unit building composed of a wall-type building unit that can take a large space without a wall on the lower floor, as described in JP-A-8-311999, at least the outer edges of the two wall-type lower floor building units Wall-less parts that do not have walls in part are juxtaposed on the same straight line that is continuous with each other, and a beam is spanned between the walls standing on the side of the wall-less part in each of the lower floor building units. There are some that support the upper building unit with beams.
[0003]
[Problems to be solved by the invention]
In the above unit building, it is necessary to increase the joint strength between the beam and the lower-floor building unit and the beam and the upper-floor building unit against the pulling force that tries to peel the upper-floor building unit from the lower-floor building unit when an earthquake occurs. There is.
[0004]
An object of the present invention is to support an upper-floor building unit and a lower-floor via a beam when supporting the upper-floor building unit with a beam spanned between the walls on the side of the wallless portion of each of the two lower-floor building units. The purpose is to increase the joint strength of the building unit and improve the pull-out strength of the building.
[0005]
[Means for Solving the Problems]
The present invention according to claim 1 is arranged such that at least a part of the outer edges of two wall-type lower floor building units are juxtaposed on the same straight line that is not provided with a wall, so that both lower floor building units In the upper and lower floor joint structure of the unit building in which the beam is spanned between the walls standing on the side of the wallless part in each, and the upper building unit is supported by this beam, at both ends of the beam, The connecting bolt that protrudes downward from the beam is fixed to an attracting fixture fixed to the wall structure of the lower floor building unit, and the connecting bolt that protrudes upward from the beam is stored inside the floor structure of the upper floor building unit. It is designed to be tightly coupled to the floor hardware.
[0006]
According to a second aspect of the present invention, in the first aspect of the present invention, the upper support for a bolt to which the floor bracket is fastened to a pull-in bracket fixed to the wall structure of the upper floor building unit. And a lower support portion for the connecting bolt provided on the beam.
[0007]
[Action]
The invention according to claim 1 has the following effect (1).
(1) The connecting bolts projecting downward at both ends of the beam are fixed to the attracting hardware of the lower-floor building unit, so that the joint strength between the beam and the lower-floor building unit can be increased. Further, the beam has a connecting bolt that protrudes upward and is tightly coupled to the metal floor of the upper floor building unit, so that the joint strength between the beam and the upper floor building unit can be increased. Therefore, the joint strength between the upper-floor building unit and the lower-floor building unit via the beam can be increased, and the pulling-out strength of the building can be improved.
[0008]
The invention according to claim 2 has the following effect (2).
(2) The upper support for the bolts to be fastened to the attracting hardware fixed to the wall structure of the upper-floor building unit, the floor hardware stored in the floor structure of the upper-floor building unit, and the connection provided on the beam A lower support for the bolt is also provided. Therefore, the joint strength between the beam and the upper floor building unit can be improved by using a single floor hardware.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 is a schematic cross-sectional view showing a unit building, FIG. 2 is a perspective view showing a second floor portion of the unit building, FIG. 3 is a schematic cross-sectional view showing a part III in FIG. 1, and FIG. 4 is a schematic view showing a part IV in FIG. FIG. 5 is a schematic cross-sectional view showing a V portion of FIG. 1, FIG. 6 shows an L-shaped lower floor building unit, (A) is a perspective view, (B) is a perspective view showing a drawing metal, FIG. Is a perspective view showing an L-shaped lower-floor building unit with a small wall, FIG. 8 shows the installation process of the connecting bolt to the beam, (A) is a perspective view showing one end of the beam, (B) is the other of the beam FIG. 9 is a front view showing the installation process of the beam, FIG. 10 shows a joining process to the lower-floor building unit at one end of the beam, and (A) is a perspective view showing the insertion state of the connecting bolt. Fig. 11 (B) is a side view showing the screwed state of the connecting bolt, Fig. 11 is a perspective view showing the fastening state of the beam to the lower floor building unit, and Fig. 12 is the lower floor building unit. The perspective view which shows the joining state of the beam of FIG. 13, FIG. 13 shows the drawing metal of an upper-floor building unit, (A) is a perspective view, (B) is a side view, FIG. 14 shows the drawing metal, (A) is front view FIG. 4B is an end view.
[0010]
The unit building 1 shown in FIG. 1 has a first floor part formed by a plurality of first floor building units 11 and a second floor part formed by a plurality of second floor building units 12 mounted on the first floor building unit 11. A third floor portion is constituted by a plurality of third-floor building units 13 mounted thereon. At this time, the building units 11 to 13 are basically wall-type building units composed of the floor panel 14 and the wall panel 15, and are configured by standing the wall panel 15 on the outer edge of the floor panel 14. .
[0011]
Here, as shown in FIG. 2, the second floor portion of the unit building 1 is composed of four building units 12A to 12D, and the building unit 12A (same for 12C) has walls on two outer edges of the floor panel 14 that intersect each other. It is an L-shaped building unit (Fig. 6) formed by standing panels 15 and 15, and the building unit 12B (same for 12D) has wall panels 15 and 15 installed on two outer edges of the floor panel 14 that intersect each other. In addition, this is an L-shaped building unit with a small wall (FIG. 7) in which the small wall 16 is erected only at a part of one outer edge. Then, the two building units 12A and the building unit 12B are divided into a wallless portion that does not include the wall panel 15 on the outer edge of the building unit 12A, and a small wall 16 that is provided only on a part of the outer edge of the building unit 12B. The wall panel 15 and the small wall 16 that are erected on the side of the wall-less portion in each of the building units 12A and 12B are juxtaposed on the same straight line with the wall-less portion not provided with the wall panel 15. The beam 17 is spanned between them, and the building unit 13 (building units 13A and 13B corresponding to the building units 12A and 12B) on the third floor is supported by the beam 17. In addition, the two building units 12C and 12D are also erected on the side of the wallless portion of each of the building units 12C and 12D, similarly to the combination of the building unit 12A and the building unit 12B. A beam 18 is spanned between 15 and the small wall 16, and the building unit 13 (building units 13C and 13D (not shown) corresponding to the building units 12C and 12D) on the third floor is supported by the beam 18. .
[0012]
That is, the unit building 1 forms a large living space that is not obstructed by the wall panel 15 by the building units 12A to 12D on the second floor portion, and the building unit 12A, the building unit 12B, the building unit 12C, and the building unit 12D. The building units 13 (13A to 13D) on the third floor can be supported by the beams 17 and 18 that are respectively spanned.
[0013]
However, in the unit building 1, the joint strength between the third-floor building unit 13 (hereinafter referred to as the upper-floor building unit) and the second-floor building unit 12 (hereinafter referred to as the lower-floor building unit) through the beams 17 and 18 is increased. In order to improve the pulling strength of the building 1, (A) the joint structure of the beam 17 and the lower building units 12A, 12B (the joint structure of the beam 18 and the lower floor building units 12C, 12D is the same, so the explanation is (B) The joint structure of the beam 17 and the upper-floor building units 13A and 13B (the joint structure of the beam 18 and the upper-floor building units 13C and 13D is the same, so the description thereof is omitted) Prepare as follows.
[0014]
(A) Joining structure of beam 17 and lower floor building units 12A, 12B (FIGS. 3, 5, 6, 8 to 12)
The beam 17 fixes the connecting bolt 21 provided at one end to the attracting hardware 22 fixed to the wall panel 15 of the lower floor building unit 12A (FIG. 3), and connects the connecting bolt 31 provided at the other end to the lower floor building unit. It fixes to the attracting metal object 32 fixed to the small wall 16 of 12B (FIG. 5).
[0015]
As shown in FIG. 8A, the connecting bolt 21 is inserted from above into a bolt insertion hole provided at one end of the beam 17 with a hammer or the like, and the tip screw portion 21 </ b> A protrudes from the other end of the beam 17. The connecting bolt 21 is provided with a positioning flange 21 </ b> C at the attachment position to the beam 17 in the upper middle portion, and a tool engagement groove on the end surface of the proximal screw portion 21 </ b> B.
[0016]
As shown in FIG. 3 and FIG. 6 (B), the attracting member 22 to which the tip screw portion 21A of the connecting bolt 21 provided on the beam 17 is fastened to the vertical frame 15A of the wall panel 15 of the upper building unit 12A. Or it consists of a flat plate 22A fixed by nailing and a support plate 22C which is an upper surface material of a square frame-shaped support frame 22B coupled to the flat plate 22A, and the lower end surface of the beam 17 can be placed on the support plate 22C. And a screw hole 22D into which the tip screw portion 21A of the connecting bolt 21 is screwed. The attracting hardware 22 is also provided with a screw hole 22E in which a hanging tool 23 for the upper floor building unit 12A is attached and detached (FIG. 6B).
[0017]
As shown in FIG. 8 (B), the connecting bolt 31 is inserted into a bolt insertion hole provided at the other end of the beam 17 with a spring washer 33 and a flat washer 34 with a hammer or the like. The tip screw portion 31A is projected.
[0018]
As shown in FIG. 5, the attracting metal 32 to which the tip screw portion 31A of the connecting bolt 31 provided on the beam 17 is fastened to the vertical frame 16A of the small wall 16 of the lower building unit 12B by bolting or nailing. And a support plate 32C, which is an upper surface material of a square frame-shaped support frame 32B coupled to the flat plate 32A. The lower end surface of the beam 17 can be placed on the support plate 32C, and the connecting bolt 31 is provided with a screw hole 32D into which a tip screw portion 31A of 31 is screwed.
[0019]
Therefore, the beam 17 is joined to the lower building units 12A and 12B as follows.
(1) At the factory production stage of the lower-floor building units 12A and 12B, the attracting hardware 22 is fixed to the wall panel 15 of the lower-floor building unit 12A, and the attracting hardware 32 is secured to the small wall 16 of the lower-floor building unit 12B. deep.
[0020]
(2) The connecting bolts 21 and 31 are provided at both ends of the beam 17, respectively.
[0021]
(3) After installing the lower-floor building units 12A and 12B at the construction site, the beams 17 are supported by the support plate 22C of the attracting hardware 22 of the lower-floor building unit 12A and the support plate 32C of the attracting hardware 32 of the lower-floor building unit 12B. Hang it down (Figure 9).
[0022]
(4) At one end of the beam 17, the tip screw portion 21 A of the connecting bolt 21 protruding from the lower end surface of the beam is combined with the screw hole 22 D of the metal fitting 22 (FIG. 10A), and the air driver 24 is connected. The front end screw portion 21A of the connecting bolt 21 is engaged with the tool engaging groove on the upper end surface of the bolt 21 and fastened to the screw hole 22D of the drawing metal piece 22 (FIG. 10B) (FIG. 11).
[0023]
(5) At the other end of the beam 17, the tip screw portion 31 A of the connecting bolt 31 protruding from the lower end surface of the beam 17 is combined with the screw hole 32 D of the drawing metal 32, and the tip screw of the connecting bolt 31 is connected with a spanner 35 or the like. The part 31A is fastened to the screw hole 32D of the drawing metal 32 (FIG. 11).
[0024]
(6) At one end of the beam 17, the beam 17 is fixed to the wall panel 15 of the lower building unit 12A with a nail 36, and at the other end of the beam 17, the beam 17 is attached to the small wall 16 of the lower building unit 12B. It fixes with the nail | claw 37 (FIG. 12), and it complete | finishes joining of the beam 17 to the lower floor building units 12A and 12B.
[0025]
(B) Joint structure of beam 17 and upper-floor building units 13A and 13B (FIGS. 3, 4, 13, and 14)
(B-1) Joining structure of beam 17 and upper-floor building unit 13A (FIGS. 3, 4, and 13) Beam 17 has one end for joining to upper-floor building unit 12A in (A) described above. The connecting bolt 21 provided in the upper floor building unit 13A is fastened to the floor bracket 14A stored in the floor panel 14 (FIG. 3), and the connecting bolt 51 with a washer provided in the middle is connected to the upper floor building unit 13A. It is tightly coupled to a floor hardware 40B (same as the floor hardware 40A) stored inside the floor panel 14 (FIG. 4).
[0026]
First, the storage structure of the floor hardware 40A and 40B to the floor panel 14 of the upper floor building unit 13A will be described.
The floor hardware 40A includes a mounting plate 41 that is temporarily fixed to the floor joist 14A of the floor panel 14 and an upper support plate that is welded to the upper end portion of the mounting plate 41 and is positioned below the floor surface material 14B of the floor panel 14. 42, and a lower support plate 43 that is welded to the lower end portion of the mounting plate 41 and placed on the head joint 14C of the floor panel 14.
[0027]
At this time, the tip of the bolt 70 fastened to the drawing metal 60 fixed to the wall panel 15 of the upper floor building unit 13A is inserted into the upper support plate 42 of the floor metal 40A, and a nut 71 is screwed into the bolt 70. By wearing, the floor hardware 40 </ b> A and the attracting hardware 60 are connected via the bolts 70. The attracting hardware 60 includes a flat plate 61 fixed to the vertical frame 15A of the wall panel 15 of the upper floor building unit 13A by bolting or nailing, and a U-shape welded to the surface on the other end side of the flat plate 61. It comprises a cross-sectional locking plate 62. The bolt 70 is inserted into the locking plate 62, and the tip screw portion is supported from the floor surface material 14B of the floor panel 14 to the upper surface of the floor hardware 40A while the flat head portion 70A is in contact with the flat plate 61 and is prevented from rotating. The nut 42 is inserted into the plate 42 and screwed.
[0028]
The floor hardware 40B has the same configuration as that of the floor hardware 40A, and is connected to a pulling hardware 60 fixed to the wall panel 15 of the upper floor building unit 13A via a bolt 70.
[0029]
The connecting bolt 51 with a washer is an intermediate part of the beam 17 and is inserted into a bolt insertion hole provided at two positions corresponding to the wall panel 15 of the upper floor building unit 13A and the wall panel 15 of the upper floor building unit 13B with a hammer or the like. The thread portion is inserted from below and protrudes from the upper end of the beam 17.
[0030]
Accordingly, the upper floor building unit 13A is joined to one end and the middle of the beam 17 as follows.
(1) At the factory production stage of the upper-floor building unit 13A, the metal fittings 40A and 40B are fixed to the floor panel 14 of the upper-floor building unit 13A, and the attracting hardware 60 and 60 fixed to the opposite wall panels 15 and 15, respectively. Are fastened to the floor hardware 40A, 40B by bolts 70, 70.
[0031]
(2) The upper floor building unit 13A is installed on the lower floor building unit 12A at the construction site. At this time, the upper-floor building unit 13A is placed on the beam 17 joined to the lower-floor building units 12A and 12B as described above in (A).
[0032]
(3) At one end of the beam 17, a bolt insertion hole 14 </ b> D provided in the lower support plate 43 of the floor panel 14 of the upper floor building unit 13 </ b> A and the floor bracket 40 </ b> A protrudes from the upper end surface of the beam 17. The nut 44 is fastened to the base end screw portion 21B of the connecting bolt 21 together with the base end screw portion 21B of the connecting bolt 21 (FIG. 3).
[0033]
(4) Also in the middle part of the beam 17, the head connection 14C of the floor panel 14 of the upper floor building unit 13A and the bolt insertion hole 14D provided in the lower support plate 43 of the floor hardware 40B correspond to the upper floor building unit 13A. The nut 45 is fastened to the threaded portion of the connecting bolt 51 provided at the intermediate portion of the beam 17 (FIG. 4).
[0034]
The upper end of the beam 17 is provided with a bolt 82 planted in a pin 81 fitted in a lateral hole provided in the beam 17, and the head connection 14 </ b> C of the floor panel 14 of the upper building unit 13 </ b> A. The upper floor building unit 13A can be fixed in the horizontal direction with respect to the beam 17 by inserting the leg washer 83 into the head joint 14C with a nut 84 screwed into the bolt 82 and inserted into the tip of the bolt 82. Yes.
[0035]
(B-2) Joint structure of beam 17 and upper building unit 13B (Fig. 4)
The beam 17 is tightly coupled to a floor bracket 40C in which a connecting bolt 51 with a washer provided in an intermediate portion is stored inside the floor panel 14 of the upper floor building unit 13B (FIG. 4).
[0036]
The floor hardware 40C has the same configuration as the above-described floor hardware 40A of (B-1). Similarly to the above (B-1), bolts 70 are attached to the attracting hardware 60 fixed to the wall panel 15 of the upper building unit 13B. It is connected via.
[0037]
Therefore, the upper floor building unit 13B is joined to the middle part of the beam 17 as follows.
(1) At the factory production stage of the upper floor building unit 13B, the floor hardware 40C is fixed to the floor panel 14 of the upper floor building unit 13B, and the attracting hardware 60 fixed to the wall panel 15 is fastened to the floor hardware 40C by the bolt 70. .
[0038]
(2) The upper floor building unit 13B is installed on the lower floor building unit 12B at the construction site. At this time, a part of the upper-floor building unit 13B is placed on the beam 17 joined to the lower-floor building units 12A and 12B by the above-mentioned (A).
[0039]
(3) The bolt insertion hole 14D provided in the lower support plate 43 of the floor panel 14 of the upper floor building unit 13B and the lower metal plate 40C in the middle part of the beam 17 corresponds to the upper floor building unit 13B. The nut 45 is fastened to the threaded portion of the connecting bolt 51 provided at the intermediate portion of the beam 17 (FIG. 4).
[0040]
The upper end of the beam 17 is provided with a bolt 82 planted in a pin 81 fitted in a lateral hole provided in the beam 17 so as to connect the head of the floor panel 14 of the upper building unit 13B. 14C is inserted into the tip of the bolt 82, and the upper floor building unit 13B can be fixed in the horizontal direction with respect to the beam 17 by fastening the leg washer 83 to the head joint 14C by a nut 84 screwed to the bolt 82. It is said.
[0041]
Therefore, according to this embodiment, there are the following operations.
(1) The connecting bolts 21 and 31 at both ends of the beam 17 are fixed to the attracting hardware 22 and 32 of the lower floor building units 12A and 12B, so that the joint strength between the beam 17 and the lower floor building units 12A and 12B can be increased. In addition, the beam 17 has a connecting bolt 21 at one end and a connecting bolt 51 at the middle part fastened to the floor hardware 40A, 40B, 40C of the upper building units 13A, 13B, and the beam 17 and the upper building units 13A, 13B. The joint strength can be increased. Therefore, the joint strength between the upper floor building units 13A and 13B and the lower floor building units 12A and 12B via the beam 17 can be increased, and the pulling-out strength of the building can be improved.
[0042]
(2) At one end of the beam 17, the connecting bolt 21 fixed to the drawing hardware 22 of the lower building unit 12A and the connecting bolt 21 fastened to the floor fitting 40A of the upper building unit 13A are connected in a single connection. The bolt 21 is unified. Therefore, compared with the case where those connecting bolts are separate, the joint strength between the upper building units 13A, 13B and the lower building units 12A, 12B sandwiching the beam 17 can be further improved while simplifying the configuration.
[0043]
(3) Because of the bolts 70, the floor brackets 40A to 40C stored in the floor panels 14 of the upper floor building units 13A, 13B are fastened to the attracting hardware 60 fixed to the wall panel 15 of the upper floor building units 13A, 13B. The upper support plate 42 and the lower support plate 43 for the connecting bolts 21 and 51 provided on the beam 17 are also provided. Therefore, the joint strength between the beam 17 and the upper floor building units 13A and 13B can be improved by using the single floor hardware 40A to 40C.
[0044]
The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention. For example, the wall structure to which the attracting hardware is fixed in the lower-floor building unit or the upper-floor building unit is not limited to the vertical frame of the wall panel but may be a pillar.
[0045]
In the present invention, the connecting bolts provided on the beam may be fastened to the floor hardware stored inside the floor structure of the upper building unit at both ends of the beam.
In the present invention, the two lower-floor building units over which the beam is bridged may have the entire outer edge as a wallless portion. In addition, in both of the two lower-floor building units over which the beam is stretched, only a part of the outer edge may be a wallless portion.
[0046]
【The invention's effect】
As described above, according to the present invention, when the upper building unit is supported by the beam spanned between the walls on the side of the wallless part of each of the two lower building units, the upper building via the beam is supported. The joint strength between the unit and the lower-floor building unit can be increased, and the pulling-out strength of the building can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing a unit building.
FIG. 2 is a perspective view showing a second floor portion of a unit building.
FIG. 3 is a schematic cross-sectional view showing a part III in FIG. 1;
FIG. 4 is a schematic cross-sectional view showing a portion IV in FIG.
FIG. 5 is a schematic cross-sectional view showing a V portion in FIG. 1;
6A and 6B show an L-shaped lower floor building unit, in which FIG. 6A is a perspective view and FIG. 6B is a perspective view showing a drawing hardware.
FIG. 7 is a perspective view showing an L-shaped lower floor building unit with a small wall.
8A and 8B show a process of installing a connecting bolt to a beam, wherein FIG. 8A is a perspective view showing one end of the beam, and FIG. 8B is a perspective view showing the other end of the beam.
FIG. 9 is a front view showing a beam installation process;
FIG. 10 shows a process of joining one end of a beam to a lower-floor building unit, (A) is a perspective view showing an inserted state of a connecting bolt, and (B) is a side view showing a screwed state of the connecting bolt. FIG.
FIG. 11 is a perspective view showing a fastening state of a beam to a lower-floor building unit.
FIG. 12 is a perspective view showing a state in which a beam is joined to a lower-floor building unit.
FIGS. 13A and 13B show an attracting hardware for an upper-floor building unit, where FIG. 13A is a perspective view and FIG. 13B is a side view.
FIGS. 14A and 14B show a drawing metal, wherein FIG. 14A is a front view and FIG. 14B is an end view.
[Explanation of symbols]
1 Unit Building 12A, 12B Lower Floor Building Unit 13A, 13B Upper Floor Building Unit 14 Floor Panel (Floor Structure)
15 Wall panel (wall structure)
16 Small wall 17 Beam 21, 31, 51 Connecting bolt 22, 32 Pulling metal 40A-40C Floor metal 42 Upper support plate (upper support part)
43 Lower support plate (lower support part)
60 Pulling hardware 70 bolts

Claims (2)

Two wall-type lower-floor building units that have no walls on at least a part of their outer edges are juxtaposed on the same straight line, and stand on the side of the wall-less portion of each of the lower-floor building units. In the joint structure of the upper and lower floors of the unit building, in which the beam is spanned between the installed walls and the upper building unit is supported by this beam, the connecting bolts projecting downward from the beam at both ends of the beam, Fixed to the attracting hardware fixed to the wall structure of the lower floor building unit,
A connecting structure for upper and lower floors of a unit building, characterized in that a connecting bolt projecting upward from a beam is fastened to a floor hardware stored inside the floor structure of the upper floor building unit. The floor hardware includes an upper support for a bolt fastened to an attracting metal fixed to the wall structure of the upper floor building unit, and a lower support for a connection bolt provided on the beam. The upper and lower floor joining structure of the unit building according to claim 1.

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