JP4568526B2 - Unit building joint structure - Google Patents

Description

  The present invention relates to a joint structure of unit buildings.

As a joint structure of unit buildings, as described in Patent Document 1, there is one that joins pipe columns arranged side by side with a gap between adjacent building units. The joint structure of Patent Document 1 includes a first nut member provided on one tube pillar, a second nut member provided opposite to the first nut member and provided on the other tube pillar, and both pipes. It is comprised from the screw member screwed together in both nut members in the clearance gap between pillars, and the round pipe-shaped spacer covered on the screw member between the clearance gaps between both pipe pillars.
JP-A-6-49911

The joint structure of Patent Document 1 has the following problems.
(1) A first nut member is welded to a tube column of one building unit of adjacent building units in advance at the factory, and a screw member is screwed to the first nut member and attached in a protruding state. Therefore, productivity is poor and handling of the building unit at the transportation and storage stage is poor.

(2) At the construction site, after the spacer is put on the screw member of one building unit,
The other building unit cannot be installed close to one building unit, and the building unit is poorly installed.

(3) The spanner that rotates the second nut member screwed into the screw member is a gap between both pipe pillars of adjacent building units, and further from the window provided in the spacer toward the second nut member. The nut member is poor in operability.

  An object of the present invention is to easily join bolted columns of adjacent building units.

According to the first aspect of the present invention, tube columns arranged side by side with a gap between adjacent building units are bolted together , and a bolt insertion hole is provided coaxially on each of opposite side walls of the arranged column columns. A bolt mounting operation hole is provided on the side wall on the back side of the side wall provided with the bolt insertion hole of one tube pillar, and a nut mounting operation hole is provided on the side wall on the back side of the side wall provided with the bolt insertion hole of the other pipe column. Perforated spacers that are coaxially arranged in the bolt insertion holes provided on the opposite side walls of the side-by-side pipe columns are provided in the gaps sandwiched between the side walls, and the bolts inserted from the bolt mounting operation holes of one of the pipe columns are A unit building joint structure in which a nut inserted through a bolt insertion hole of a column and a nut inserted through a nut mounting operation hole of the other tube column is screwed to the bolt, and at least one of the adjacent building units Building units Another building unit is placed on the ceiling beam rigidly joined to the tube column of the at least one building unit via a joint piece, and rigidly joined to the tube column of the other building unit via a joint piece Floor beams are stacked one above the other, and the lower half of the perforated spacer is provided in the space between the adjacent pipe columns of the adjacent building units, and the adjacent pipe columns are bolted to the lower half of the perforated spacer. The pipe pillars of the other building units are bolted to the upper half extending upward from the lower half of the perforated spacer, and sandwiched between the adjacent ceiling beam joint pieces of the adjacent building units. Protrusions in the lower half of the perforated spacer are provided in the gap, and the joint pieces are bolted to the projecting parts of the perforated spacer, and one end of the ceiling beam and floor beam of the building unit arranged above and below These joint pieces were, perforated spacer, and thereby bonded via Kanbashira is obtained by so also joined other ends of their ceiling beams and floor beams.

According to a second aspect of the present invention, in the first aspect of the present invention, the bolt is a high strength bolt .

According to a third aspect of the present invention, in the second aspect of the present invention, the high-strength bolt is a torcia type .

According to a fourth aspect of the present invention, in the invention of any one of the first to third aspects, the tube pillars are bolted at a plurality of positions of an upper end portion, a lower end portion and an intermediate portion thereof. .

(Claim 1)
(a) It is possible to rationally increase the horizontal rigidity of a unit building composed of both building units by synthesizing them by bolting together adjacent pipe columns of adjacent building units. Therefore, it is possible to reinforce a middle-high-rise unit building such as a three-story building or a column omitting unit building.

(b) At the factory production stage of a building unit, a bolt insertion hole and a bolt mounting operation hole are provided in the pipe column of one adjacent building unit, and a bolt insertion hole and a nut mounting operation hole are provided in the pipe column of the other building unit. It is only provided and the productivity is good, and the handling property in the transportation and storage stage of the building unit is also good.

(c) At the construction site, install one building unit close to the other building unit,
These spacers can be assembled by simply inserting between the side walls of the pipe columns of the building unit, and the building unit is easy to install and the spacer is easy to assemble.

(d) The bolt and / or nut installation tool is operated using the bolt mounting operation hole or the nut mounting operation hole provided in the pipe column, and has good operability.

(e) In the unit building, the two pillars of the two beams placed on top and bottom of the two ramen structure building units, which are the floor beam of the upper building unit and the ceiling beam of the lower building unit The two beams are bent and deformed under the action of a vertical load by joining the rigidly joined one ends together via both tube columns and perforated spacers, and also joining the other ends of the upper and lower beams. When doing so, the phase difference between both ends of the two beams is suppressed. As a result, the two beams exhibit a cross-sectional performance larger than the sum of the cross-sectional performances of the respective beams, are strengthened in rigidity, and can improve a yield strength against a vertical load. Further, when the two beams are deformed into an S shape by a horizontal load acting on the pillar of one building unit, the phase difference between both end portions and the intermediate portion of the two beams is suppressed. Thereby, the frame strength of the building unit is expanded, and the proof strength against horizontal load can be improved.

(Claim 2 )
(f) By using high-strength bolts, it is possible to strongly synthesize tube columns of adjacent building units and improve the horizontal rigidity of the unit building.

(Claim 3 )
(g) By using a torcia-type high-strength bolt, the bolt and nut can be easily tightened with a torcia tool.

(Claim 4 )
(h) By bolstering the adjacent columns of building units at multiple positions on their upper, lower, and middle parts, the combination of these columns is strengthened. The horizontal rigidity can be further improved.

1 is a schematic perspective view showing a unit building, FIG. 2 is a perspective view showing a building unit, FIG. 3 is a schematic front view showing a building unit to which construction method I is applied, and FIG. 4 is a cross section showing a specific structure of construction method I. 5 is a schematic front view showing a unit building to which construction method II is applied, FIG. 6 shows a specific structure of construction method II, (A) is a front view, (B) is a sectional view, and FIG. 7 is construction method II. Shows the principle of strengthening the rigidity of
(A) is a schematic diagram showing the deformation state of a beam, (B) is a schematic diagram showing a beam unit model, (C) is a schematic diagram showing a ramen structure model, and FIG. 8 shows the principle of strengthening the rigidity of the unit frame of Construction II. Show
(A) is a schematic diagram showing a deformed state of a beam, (B) is a schematic diagram showing a frame structure model, FIG.
Fig. 10 is a schematic diagram showing a joint structure of adjacent building units according to construction method III, Fig. 10 is a sectional view showing the main part of Fig. 9, Fig. 11 is a schematic diagram showing an example of joining of building units, and Fig. 12 is a modification of construction method III. An example is shown, (A) is a plan view showing a joint portion of a lower-floor building unit, (B) is a sectional view taken along line BB in (A), FIG. 13 is a perspective view showing a perforated spacer, and FIG. Shows a modification of Construction III, (A
) Is a plan view showing the joint portion of the lower-floor building unit, (B) is a cross-sectional view taken along line BB in (A),
FIG. 15 shows a modified example of construction method III, (A) is a plan view showing a joint portion of a lower-floor building unit,
B) is a cross-sectional view taken along line BB in (A), FIG. 16 shows a building unit to which construction method IV is applied, (A) is a front view showing the lowest floor building unit, and (B) is an upper floor. Front view showing the building unit,
FIG. 17 is a schematic diagram showing the principle of strengthening the frame of the construction method IV, FIG. 18 is a schematic diagram showing an example of the rigidity enhancement of the frame of the construction method IV, FIG. 19 is a front view showing an example of attaching the diagonal material of the construction method IV, and FIG. The lower end attachment part of an oblique member is shown, (A) is a front view, (B) is a sectional view, and FIG. 21 is a sectional view showing an intermediate part of the ceiling beam to which the upper end part of the oblique member is attached.

The unit building 1 in FIG. 1 is constructed by supporting a lowermost floor building unit 20 on a foundation 10 and sequentially mounting upper floor building units 30 and 40 on the lowermost floor building unit 20.
That is, the unit building 1 is constructed by installing a plurality of building units 20, 30, 40 adjacent to each other in the horizontal direction and the vertical direction. As shown in FIG. 2, the building unit 20 (the building units 30 and 40) has a frame structure in which a square steel pipe tube column 21, a shaped steel floor beam 22, and a shaped steel ceiling beam 23 are joined in a box shape. Is the body. The building unit 20 is configured by welding the floor beam 22 to the lower end portion of the pipe column 21 via the joint piece 22J and welding the ceiling beam 23 to the upper end portion of the pipe column 21 via the joint piece 23J. The building unit 20 can omit the floor beam 22.

The unit building 1 can constitute a middle-high-rise unit building such as a three-story building by stacking a plurality of building units 20 in the vertical direction. In addition, the unit building 1 is formed by joining a plurality of column-omitted building units adjacent to each other, with at least one corner portion of the building unit 20 as a column-omitted corner portion. It is also possible to configure a column omitting unit building formed by abutting and forming a column omitting joint.

As shown in FIGS. 3 and 4, the foundation 10 includes an anchor bolt 1 attached to a solid solid foundation 11.
The steel foundation structure 13 is fixed using 2, and the lowermost building unit 20 is supported on the upper portion of the foundation structure 13.

The lowermost floor building unit 20 is obtained by omitting the floor beam 22, and bridges the shape steel ceiling beam 23 between the upper ends of the four square steel pipe columns 21, and the end of the ceiling beam 23 is the column 21. This is a rigid frame structure that is rigidly joined to the upper end of the frame. The joint hardware 23J (FIG. 6) is welded to the upper end of the column 21, and the end of the ceiling beam 23 is welded to the joint hardware 23J. The lowermost floor building unit 20 may further include a shaped steel floor beam 22 spanned between the lower ends of the columns 21, and the end of the floor beam 23 may be rigidly joined to the lower ends of the columns 21. .

The upper floor building unit 30 (same for 40) spans a section steel ceiling beam 33 (43) between the upper ends of four square steel pipe columns 31 (41), and the end of the ceiling beam 33 is connected to the column 31. A rigid frame structure constructed by rigidly joining the upper end of the column 31, bridging a section steel floor beam 32 (42) between the lower ends of the column 31, and rigidly joining the end of the floor beam 32 to the lower end of the column 31. Is the body. Joint hardware 33J (not shown) and 32J (FIG. 6) are welded to the upper end and lower end of the column 31, and the joint hardware 33J and 32 are joined.
The ends of the ceiling beam 33 and the floor beam 32 are welded to each of J.

In the unit building 1, between the lowest floor building unit 20 and the upper floor building unit 30,
The ceiling beam 23 of the lowest floor building unit 20 and the floor beam 32 of the upper floor building unit 30 are arranged one above the other so that the ceiling beam of the upper floor building unit 30 is between the upper floor building unit 30 and the upper floor building unit 40. 33 and the floor beam 42 of the upper floor building unit 40 are arranged one above the other.

However, the unit building 1 is strengthened by applying each of the construction methods I, II, III, and IV.

Construction method I is foundation-column rigid joint structure,
Construction method II is a joint structure between upper and lower beams,
Construction method III is adjacent column joint structure,
Construction IV is a diagonal reinforcement structure.

(Construction I: Foundation-column rigid joint structure) (Figs. 3 and 4)
The construction method I is applied between the foundation 10 and the lowermost floor building unit 20 (FIG. 1), and the column base 21F of the column 21 of the lowermost floor building unit 20 is joined to the foundation 10 so as not to be substantially displaced ( FIG. 3).

As shown in FIG. 4, the foundation 10 has a mounting bracket 14 fixed to the upper end portion of the foundation structure 13 by welding, and a mounting bracket 24 fixed to the column base 21 </ b> F of the lowest floor building unit 20 by welding. The high strength bolts 15 are joined to the mounting hardware 14 so as not to be substantially displaced.

According to the construction method I, in the unit building 1, the column base 21 </ b> F of the lowest floor building unit 20 is joined to the foundation 10 so as not to be substantially displaced, whereby the rotation of the column base 21 </ b> F with respect to the foundation 10 is suppressed, and the building unit 20 The horizontal rigidity of can be improved. In order to increase the horizontal rigidity of the building unit 20, it is not necessary to reinforce the cross section of the column 21, and it is not necessary to add a middle column or a horizontal brace, thereby increasing the degree of freedom in the plan of the building unit 20 and reducing the cost.

(Structure II: Vertical beam joint structure) (Figs. 5-8)
Construction II is performed between the ceiling beam 23 of the lowest floor building unit 20 and the floor beam 32 of the upper floor building unit 30 and / or the ceiling beam 33 of the upper floor building unit 30 and the floor beam 42 of the upper floor building unit 40. (Figure 1). Hereinafter, application between the ceiling beam 23 of the lowest floor building unit 20 and the floor beam 32 of the upper floor building unit 30 will be described.

Vertical load of the ceiling beam 23 of the lower floor building unit 20 and the floor beam 32 of the upper floor building unit 30 (
In order to enhance the rigidity of the beam against the floor load), the end portions of the ceiling beam 23 and the floor beam 32 are joined so as not to be substantially displaced at the rigid joints R1 and R2 (FIG. 5).

Further, in order to enhance the rigidity of the frame against the horizontal load of the lowest floor building unit 20 and the upper floor building unit 30, in addition to the rigid joints R1 and R2, the intermediate portion in the longitudinal direction of the top beam 23 and the floor beam 32 is used. (In the present embodiment, the central portion) are joined at the rigid joint R3 so as not to be substantially displaced (FIG. 5).
).

The rigid joints R1 to R3 may be composed of four wires as schematically shown in FIG.
A plate 50 shown in FIG. 6 can be used. The plate 50 is a web w of the ceiling beam 23.
The web w of the ceiling beam 23 is attached to the web w of the floor beam 32 by two high-strength bolts 51, 51.
And fastened to the web w of the floor beam 32 with two high strength bolts 52, 52. Plate 5 in FIG.
0 shows what is sandwiched from both sides by the ceiling beams 23 and 22 of the lowermost floor building units 20 and 20 adjacent to the left and right and the floor beams 32 and 33 of the upper floor building units 30 and 30.
May be one in which only one side is attached to the ceiling beam 23 and floor beam 32 of each one building unit 20, 30. The plate 50 may be welded.

The plate 50 is attached to the flange f of the ceiling beam 23 and the flange f of the floor beam 32, and is fastened to the flanges f and f by high-strength bolts or welding joints, so that the ceiling beam 23 and the floor beam 32 are substantially omitted. It may be joined so as not to shift.

According to the construction method II, in the unit building 1, both ends of the two beams 23, 32, which are the floor beams 32 of the upper-floor building unit 30 and the ceiling beams 23 of the lower-floor building unit 20, which are vertically stacked, are rigidly connected. When the two beams 23 and 32 are bent and deformed under the action of a vertical load, the phase difference between both ends of the two beams 23 and 32 is suppressed by joining the joints R1 and R2 so that they are not substantially displaced. (FIG. 7A). As a result, the two beams 23, 32 have a cross-sectional performance I1,
Rigidity is enhanced by expressing a cross-sectional performance α (I1 + I2) larger than the sum of I2 (I1 + I2),
Yield strength against vertical load can be improved. Note that it is not necessary to provide the rigid joint R3 in order to enhance the beam rigidity by the construction method II.

The single beam model composed of only two beams 23 and 32 (FIG. 7B) exhibits a proof stress approximately 2.6 times that of the normal model to which the present invention is not applied. Columns 21 at both ends of the two beams 23 and 32,
In the rigid frame model (FIG. 7C) in which 31 is rigidly connected, 1.3 times the normal model.
Shows 1.4 times the proof stress. 7B and 7C, S provided between the central part of the ceiling beam 23 and the floor beam 32 is a spacer that fills the gap between the ceiling beam 23 and the floor beam 32. The floor load acting on 32 can be transmitted to the ceiling beam 23.

Further, in the construction method II, in the unit building 1, the two ramen structures that are the floor beams 32 of the upper-floor building unit 30 and the ceiling beams 23 of the lower-floor building unit 20 are arranged on top and bottom of each other.
One of the building units is formed by joining both ends of the beams 23 and 32 so as not to be substantially displaced by the rigid joints R1 and R2 and joining the intermediate parts so as not to be substantially displaced by the rigid joint R3. When the two beams 23 and 32 are deformed into an S shape by the horizontal load P acting on the 30 columns 31, the phase difference between the both ends and the middle portion of the two beams 23 and 32 is suppressed (FIG. 8A). ). Thereby, the frame intensity | strength of the building units 20 and 30 can expand, and the proof stress with respect to a horizontal load can be improved.

The frame rigidity of the building units 20 and 30 according to the present invention is about 1.3 times that of a normal model to which the present invention is not applied (FIG. 8B).

In construction II, the floor beam 32 of the upper building unit 30 and the ceiling beam 2 of the lower building unit 20
3 are joined so that the webs 3 of the floor beams 32 and the ceiling beams 23 do not substantially deviate from each other, or the flanges f of the floor beams 32 and the flanges f of the ceiling beams 23.
It can carry out simply using the plate 50 attached to. The one in which the plate 50 is attached to the web w can improve the frame strength of the building units 20 and 30.

(Structure III: Adjacent column joint structure) (FIGS. 9 to 15)
In the construction method III, the lower floor building units 20 and 20 are arranged side by side between the columns 21 and 21, the upper floor building units 30 and 30 are arranged side by side, and the upper floor building units 40 and 40 are arranged side by side. It is applied between the columns 41, 41 (FIG. 1).

However, in this embodiment, in the unit building 1 that constitutes the middle-high-rise unit building, the column omitting unit building, etc., in order to increase the horizontal rigidity of the unit building 1, as shown in FIG. Tubular columns 21 and 2 that line up with a gap between adjacent building units 20 and 20
The bolts are joined together as follows.

As shown in FIG. 10, the adjacent column units 21, 21 of the building units 20, 20 that are adjacent to each other are shown in the following (1) to (3) at the three positions of the upper end, the lower end, and the middle. As shown in FIG.

(1) Adjacent side walls 21A, 2 of adjacent pipe columns 21, 21 of adjacent building units 20, 20.
Bolt insertion holes 61 </ b> A and 61 </ b> A are provided coaxially in each of the 1 </ b> A and one tube pillar 2
The bolt mounting operation hole 6 is formed in the side wall 21B on the back side of the side wall 21A provided with one bolt insertion hole 61A.
Side wall 2 on the back side of the side wall 21A provided with 1B and provided with the bolt insertion hole 61A of the other tube column 21
A nut mounting operation hole 61C is provided in 1B. The bolt insertion holes 61A and 61A have the same diameter, and the bolt mounting operation hole 61B and the nut mounting operation hole 61C have the same diameter.

(2) Adjacent building units 20, 20 are installed on the foundation of the construction site, and the adjacent pipe columns 21, 2
A perforated spacer 60 that is coaxially disposed in the bolt insertion holes 61A and 61A provided in one opposing side wall 21A and 21A is provided in a gap sandwiched between the side walls 21A and 21A.

(3) The bolt 61 inserted from the bolt mounting operation hole 61B provided in the side wall 21B of one of the tube columns 21 is connected to the bolt insertion holes 61A and 61A of both the tube columns 21 and 21, and the opposite side walls of both the tube columns 21 and 21. The holes are inserted into the bolt insertion holes 60A of the perforated spacer 60 provided in the gap between 21A and 21A. A nut 62 inserted from a nut mounting operation hole 61 </ b> C provided in the side wall 21 </ b> B of the other pipe column 21 is screwed to the bolt 61. The bolt 61 is a high-strength bolt, which is a torcia-type high-strength bolt in this embodiment, and a torcia tool is inserted from the nut mounting operation hole 61 </ b> C and the nut 62 is fastened to the bolt 61.

Note that a high-strength hexagon bolt can be used as the bolt 61, and other bolts can also be used.

According to the present embodiment, the following operational effects can be obtained.
(a) It is possible to rationally increase the horizontal rigidity of the unit building 1 composed of the two building units 20 and 20 by combining the adjacent column units 21 and 21 of the building units 20 and 20 by bolting. it can. Accordingly, it is possible to reinforce the middle / high-rise floor unit building 1 such as a three-story building or the column omitting unit building 1.

(b) At the factory production stage of the building unit 20, the pipe column 21 of one of the adjacent building units 20
The bolt insertion hole 61A and the bolt mounting operation hole 61B are provided on the pipe column 21 of the other building unit 20, and the bolt insertion hole 61A and the nut mounting operation hole 61C are simply provided. Easy handling at the storage stage.

(c) At the construction site, the other building unit 20 is installed close to the one building unit 20, and the spacers 60 are arranged on the side walls 21 </ b> A and 21 of the pipe columns 21 arranged side by side with the building unit 20.
It can be assembled by simply inserting it between A, and the installation property of the building unit 20 and the assembly property of the spacer 60 are good.

(d) The installation tool of the bolt 61 and / or the nut 62 is operated using the bolt mounting operation hole 61B or the nut mounting operation hole 61C provided in the tube column 21, and the operability is good.

(e) By using the high-strength bolts 61, the pipe columns 21 arranged side by side in the adjacent building units 20 can be strongly combined, and the horizontal rigidity of the unit building 1 can be improved.

(f) By using the torcia-type high-strength bolt 61, the fastening operation of the bolt 61 and the nut 62 can be easily performed with a torcia tool.

(g) Adjacent pipe columns 21, 21 of adjacent building units 20, 20 are connected to each other at their upper ends,
By bolting at a plurality of positions at the lower end portion and the intermediate portion, it is possible to enhance the synthesis of the tube columns 21 and further improve the horizontal rigidity of the unit building 1.

The horizontal rigidity of the unit building 1 according to the present invention of FIGS. 11B to 11D, in other words, the allowable horizontal load P with respect to the capital of the building unit 20 is a normal model to which the present invention is not applied (FIG. 11 (
A)) to 1.2 to 1.9 times the allowable horizontal load Pa. FIG. 11B shows an example in which the tube pillars 21 and 21 are bolted to each other at the upper end and the lower end, and P = 1.2 Pa. FIG. 11C shows the tube pillars 21 and 21 connected to each other between the upper end, the lower end, and the intermediate portion. In the example of bolting at one place, P = 1.7 Pa, FIG. 11 (D)
Is an example in which the pipe columns 21, 21 are bolted at the three positions of the upper end, the lower end, and the middle, P = 1.9
Pa.

FIG. 12 shows a cross-shaped perforated spacer 70 in a unit building 1 in which the corner portions of four building units 20 adjacent to each other are arranged to face each other and the upper-floor building unit 30 is mounted on each building unit 20. This is an example of using construction method III. At this time, the pipe columns 21 of the four building units 20 are aligned with a cross-shaped gap, and the columns 31 of the four upper-floor building units 30 are also aligned with a cross-shaped gap. Moreover, between the building unit 20 corresponding to the upper and lower sides and the upper floor building unit 30, the ceiling beam 23 which is rigidly joined to the upper end part of the adjacent column 21 of the building unit 20 and is bridged between them, Floor beams 32 that are rigidly joined to the lower end portions of adjacent columns 31 of the floor building unit 30 and are spanned between them are stacked one above the other.

As shown in FIG. 13, the perforated spacer 70 includes a girder direction plate 71 arranged along the girder direction, and a wife direction plate 72 arranged orthogonal to the lower half of the central portion along the girder direction of the girder direction plate 71. It consists of.

The lower half of the girder direction plate 71 of the perforated spacer 70 is the building unit 20 adjacent in the wife direction,
Bolts 61 inserted into bolt mounting operation holes 61B provided in the gaps between the opposing side walls 21A, 21A of the 20 side-by-side columns 21, 21 and inserted in the side wall 21A of the one column 21 are both pipe columns 21, 21. Bolt insertion holes 61A, 61A, and side walls 21A, 21 of both tube columns 21, 21
A nut 62 inserted through a nut insertion hole 61C provided in the side wall 21B of the other pipe column 21 is inserted into the bolt insertion hole 71A in the lower half of the girder direction plate 71 provided in the gap between the bolts 61. Screw on. Further, the end plate 72 of the perforated spacer 70 is provided in a gap between the opposing side walls 21A, 21A of the side-by-side pipe columns 21, 21 of the building units 20, 20 adjacent to each other in the spar direction. The bolt 61 inserted from the bolt mounting operation hole 61B provided in the side wall 21B of the tube column 21 is a gap between the bolt insertion holes 61A and 61A of both the tube columns 21 and 21 and the side walls 21A and 21A of both the tube columns 21 and 21. A nut 62 inserted through a nut insertion operation hole 61 </ b> C provided in the side wall 21 </ b> B of the other pipe column 21 is screwed into the bolt 61. As a result, the adjacent pipe columns 21 of the four building units 20 adjacent to each other.
The horizontal rigidity of the unit building 1 including these building units 20 can be increased reasonably as in the embodiment of FIGS.

The upper half of the spar direction plate 71 of the perforated spacer 70 extends upward from the lower half of the spar direction plate 71, and the adjacent column pillars 31 of the upper floor building units 30, 30 that are adjacent in the wife direction, The bolt 61 inserted through the bolt mounting operation hole 61B provided in the side wall 31B of the one pipe column 31 is provided in a gap between the opposite side walls 31A, 31A of the bolt 31 and the bolt insertion holes 61A of both the tube columns 31, 31 are provided.
61A and nuts provided in the side wall 31B of the other pipe column 31 through the bolt insertion holes 71B in the upper half of the spar direction plate 71 provided in the gap between the side walls 31A, 31A of the both pipe columns 31, 31 The nut 62 inserted from the mounting operation hole 61C is screwed to the bolt 61. As a result, the adjacent pipe columns 31 of the four upper floor building units 30 adjacent to each other are joined together by bolts and synthesized, as shown in FIGS.
As in the first embodiment, the horizontal rigidity of the unit building 1 including the upper floor building units 30 can be increased reasonably.

Furthermore, in the unit building 1, the ceiling beam 23 of the building unit 20 that is placed one above the other.
And the one end of the floor beam 32 of the upper floor building unit 30 are joined together as described above via the pipe columns 21 and 31 and the girder direction plate 71 of the perforated spacer 70. The other end portions of the floor beam 32 can be joined so as not to be substantially displaced as in the above-described construction method II. When the two beams 23 and 32 are bent and deformed under the action of a vertical load, the phase difference between both ends of the two beams 23 and 32 is suppressed. As a result, the two beams 23 and 32 exhibit a cross-sectional performance larger than the sum of the cross-sectional performances of the beams 23 and 32, are strengthened in rigidity, and can improve the proof strength against a vertical load. Further, the two beams 23, 3 are caused by a horizontal load acting on the pillar 31 of one building unit 30.
When 2 is deformed in an S shape, the phase difference between the two end portions and the intermediate portion of the two beams 23 and 32 is suppressed. Thereby, the frame intensity | strength of the building units 20 and 30 can expand, and the proof stress with respect to a horizontal load can be improved. In the unit building 1, both the construction method II and the construction method III are applied, and the horizontal rigidity and the vertical rigidity of the unit building 1 can be strengthened together.

In FIG. 12, among the four building units 20, the upper floor building unit 30 is mounted only on the upper part of the two building units 20 on one side in the girder direction, and the upper part of the other two building units 20 is the upper side. In the unit building 1 which is a lower building in which the floor building unit 30 is not mounted, the girder direction plate 71 of the perforated spacer 70 is arranged on one side of the upper half of the girder direction as shown by a two-dot chain line in FIG. Excise.

FIG. 14 is a modified example of FIG. 12, in the unit building 1 in which the corner portions of two building units 20 adjacent to each other are arranged to face each other and the upper floor building unit 30 is mounted on each building unit 20. This is an example in which the construction method III is applied using a flat perforated spacer 80.

Side walls 21A, 21A opposite to each other of adjacent column columns 21, 21 of building units 20, 20 adjacent to each other.
A lower half portion of the perforated spacer 80 is provided in the gap between the two, and similarly to the embodiment of FIG. 12, the juxtaposed pipe columns 21 and 21 are bolted together by the bolt 61 to construct the construction method III.

Further, the opposite side walls 31 of the adjacent pipe columns 31, 31 of the upper building units 30, 30 adjacent to each other.
The upper half portion of the perforated spacer 80 is provided in the gap between A and 31A, and the tube columns 31 and 31 arranged side by side are bolted together with bolts 61 to construct the construction method III as in the embodiment of FIG. .

Furthermore, the protrusion 81 of the lower half part of the perforated spacer 80 is provided in the gap between the adjacent joint pieces 23J, 23J of the adjacent pipe columns 21, 21 of the building units 20, 20 adjacent to each other.
These opposing joint pieces 23J, 23J are bolted together by bolts 61. As a result, in the unit building 1, the end portions of the ceiling beam 23 of the building unit 20 and the floor beam 32 of the upper floor building unit 30 that are stacked one above the other are connected to the pillars 21 and 31 and the perforated spacer 80. Therefore, the construction method II can also be constructed by joining the other ends of the ceiling beam 23 and the floor beam 32 so as not to substantially deviate from each other.

FIG. 15 is a modified example of FIG. 12, in the unit building 1 in which the corner portions of the three building units 20 adjacent to each other are arranged to face each other and the upper floor building unit 30 is mounted on each building unit 20. In this example, construction method III is applied using an L-shaped perforated spacer 90.

The perforated spacer 90 includes a girder direction plate 91 disposed along the girder direction and a wife direction plate 92 disposed orthogonal to one longitudinal edge of the girder direction plate 91.

In each of the wife direction and the girder direction, the adjacent column 21 of the building units 20, 20 adjacent to each other.
, 21 in the gap between the opposing side walls 21A, 21A, the girder direction plate 9 of the perforated spacer 90
1. A lower half portion of the wife direction plate 92 is provided, and in the same manner as in the embodiment of FIG.
One to the other is bolted together with bolts 61 to construct construction method III.

Further, in each of the wife direction and the spar direction, the spar direction plate 91 of the perforated spacer 90 is formed in a gap between the opposing side walls 31A, 31A of the adjacent column columns 31, 31 of the upper building units 30, 30 adjacent to each other. The upper half portion of the wife direction plate 92 is provided, and in the same manner as in the embodiment of FIG. 12, the juxtaposed pipe columns 31 and 31 are bolted together by bolts 61 to construct the construction method III.

In the unit building 1, one end portions of the ceiling beam 23 of the building unit 20 and the floor beam 32 of the upper floor building unit 30 that are arranged one above the other are the tube columns 21 and 31 and the perforated spacer 90. Therefore, the construction method II can also be constructed by joining the other ends of the ceiling beam 23 and the floor beam 32 so that they do not substantially deviate from each other.

In FIG. 15, among the three building units 20, the building unit 20 on one side in the wife direction.
In the unit building 1 in which the upper-floor building unit 30 is mounted only on the upper part and the upper part of the other building unit 20 is a lower house on which the upper-floor building unit 30 is not mounted, the wife direction plate 92 of the perforated spacer 90 is provided. The upper half is excised as shown by a two-dot chain line in FIG.

(Structure IV: diagonal reinforcement structure) (FIGS. 16 to 18)
The construction method IV is between the column base 21F of the column 21 of the lowest floor building unit 20 and the middle part of the ceiling beam 23.
Between the column base 31F of the column 31 of the upper floor building unit 30 (40 is the same) and the middle part of the ceiling beam 33,
Alternatively, it is applied between the column head 31H of the column 31 and the intermediate portion of the floor beam 32 of the upper floor building unit 30 (the same applies to 40) (FIG. 1).

FIG. 16A shows an oblique member 101 provided between the column base 21 </ b> F of the column 21 of the lowest floor building unit 20 and the intermediate portion of the ceiling beam 23. The diagonal member 101 includes the column base 21F of the column 21 and the ceiling beam 2.
3 is pin-bonded to each of the intermediate portions of 3 (rigid bonding is also possible).

FIG. 16B shows an oblique material 102 provided between the column base 31 </ b> F of the column 31 of the upper floor building unit 30 and the intermediate portion of the ceiling beam 33. The diagonal member 102 includes the column base 31F of the column 31 and the ceiling beam 33.
It is pin-joined to each of the middle part of the (possibly rigid joint). Since the upper floor building unit 30 includes the floor beam 32, the diagonal member 10 described above is provided between the column head 31 </ b> H of the column 31 and the intermediate portion of the floor beam 32.
2 may be provided.

According to the construction method IV, in the unit building 1, the diagonal member 101 is provided between the column base 21 </ b> F of the lowest floor building unit 20 and the middle part of the ceiling beam 23.
A right-angled triangle formed by a part of the column 21 and the ceiling beam 23, which is a corner, together with the diagonal member 101 is defined as an undeformed body (undeformed truss). As a result, the apparent length L2 of the ceiling beam 23 in the building unit 20 (the deformed portion length L2 obtained by removing the undeformed truss portion L1 from the total length L of the ceiling beam 23) is shortened to enhance the frame rigidity, and the horizontal load Yield strength against P can be improved (FIG. 17).

Also, between the column base 31F of the upper floor building unit 30 (same for 40) and the middle part of the ceiling beam 33 (
Alternatively, the diagonal member 102 is provided between the column head 31H and the intermediate portion of the floor beam 32, so that the pillar 31 and a part of the ceiling beam 33, which are one corner of the frame of the rigid frame structure, form a right angle with the diagonal member 102. Let the triangle be an undeformed body (undeformed truss). As a result, the apparent length L2 of the ceiling beam 33 in the building unit 30 (the deformed portion length L2 obtained by removing the undeformed truss portion L1 from the total length L of the ceiling beam 33) is shortened to enhance the frame rigidity, and the horizontal load Strength against P can be improved.

The above-mentioned non-deformable body (non-deformable truss) with a simple configuration in which the diagonal members 101 and 102 are added while making use of the frame of the column 21 and the beam 23 and the frame of the column 31 and the beams 32 and 33. The above-described frame rigidity can be easily enhanced.

By simply connecting the diagonal members 101 and 102 to the columns 21 and 31 and the beams 23 and 33 (32), the above-mentioned indeformable body (undeformed truss) is easily formed at one corner of the frame of the rigid frame structure. It is possible to simplify the attachment of the diagonal members 101 and 102.

Since the frame rigidity is reinforced only by the diagonal members 101, 102, the building units 20, 30
A relatively large opening can be formed without disturbing the formation of the opening in the ramen structure.

The frame rigidity of the building units 20, 30 (same for 40) according to the present invention is 1.3 to 2.0 times that of a normal model to which the present invention is not applied. Building unit 20 and building unit 30
(40 is the same), the position where the diagonal members 101, 102 are joined to the ceiling beam 23 of the building unit 20 and the ceiling beam 33 of the building unit 30, in other words, the length of the undeformed truss portion L1 is 450 mm.
, 900 mm, the allowable horizontal load Pa of the building units 20, 30 is the allowable horizontal load Pa (1300 kg, 900 kg) of the normal model without the diagonal members 101, 102 as shown in FIG.
In contrast, the building unit 20 expands to 1550 kg and 1700 kg, and the building unit 30 increases 1200 kg.
, Expand to 1400kg.

As shown in FIG. 18, in the lowest floor building unit 20, the column bases 21F of the left and right columns 21 are provided.
Left and right diagonal members 101 may be provided between the left and right intermediate portions of the ceiling beam 23. Also, in the upper floor building unit 30 (40 is the same), the column bases 31 of the left and right columns 31 are also shown.
Left and right diagonal members 102 and 102 may be provided between F (or stigma 31H) and the left and right intermediate portions of ceiling beam 33 (or floor beam 32). According to this, left and right diagonal members 101, 101
, 102, 102 are joined to the ceiling beam 23 of the lower floor building unit 20 and the ceiling beam 33 of the upper floor building unit 30, and the length of the undeformed truss portion L1 formed as a result is as short as 450 mm, for example. The allowable horizontal load Pa of the building units 20 and 30 can be greatly increased to 2050 kg and 1800 kg.

FIGS. 19 to 21 are specific attachment examples of the diagonal member 101 (same for 102) in the construction method IV. The building unit 20 (30, 40 is the same) is an example including a floor beam 22, and a reinforcing frame 25 including the diagonal member 101 is fitted between the floor beam 22 and the ceiling beam 23.

The reinforcing frame 25 includes a reinforcing column 26 attached to the column 21 and an intermediary column 27.
The lower end portion of the diagonal member 101 is joined by welding or the like to the mounting plate 26A that extends horizontally from the lower end portion of the intermediate member 27, and the upper end portion of the oblique member 101 is joined to the side surface on the upper end side of the intermediate column 27 by welding or the like.
The connecting beam 28 is bridged between the lower end side intermediate portion of 01 and the lower end side intermediate portion of the intermediate column 27, and the connecting beam 29 is extended between the upper end side intermediate portion of the diagonal member 101 and the upper end side intermediate portion of the reinforcing column 26. .

The reinforcing frame 25 includes a reinforcing column 26 and a mounting plate 26A constituting the lower end portion of the diagonal member 101.
The joint plate 22B joined to the column base 21F of the column 21 is bolted, and the mounting plate 26B extending horizontally from the upper end of the reinforcing column 26 is bolted to the joint piece 23J joined to the column head 21H of the column 21. At this time, the floor beam reinforcement metal fitting 103 having an L-shaped cross section is welded to the upper flange of the floor beam 22 and the inner surface of the web that are attached to the joint piece 22J, and the mounting plate 26A of the diagonal member 101 is seated on the joint piece 22J. The floor beam reinforcement hardware 103, the floor beam 22, the joint piece 22J, the bolt 104 inserted through the mounting plate 26A, and the nut 104A are joined.

The reinforcing frame 25 is bolted at the lower end of the stud 27 to the upper flange of the floor beam 22 and is bolted at the upper end of the stud 27 to the lower flange of the ceiling beam 23. At this time, a ceiling beam reinforcing metal 105 having a C-shaped cross section is provided between the upper and lower flanges of the ceiling beam 23 to which the upper end portion of the stud 27 is bolted.
Are welded.

In this embodiment, “joining so as not to substantially deviate” means “joining so that the joining part maintains a rectangular shape”, “joining so that the overlapping portions of the upper and lower beams do not deviate”, and the like. Including rigid joints, but also weaker joints than rigid joints. Further, the joining between the end portions of the beam includes joining in the vicinity of the end portion.

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 even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. For example, the present invention is not limited to unit buildings and can be widely applied to general buildings.

FIG. 1 is a schematic perspective view showing a unit building. FIG. 2 is a perspective view showing the building unit. FIG. 3 is a schematic front view showing a building unit to which construction method I is applied. FIG. 4 is a cross-sectional view showing a specific structure of the construction method I. FIG. 5 is a schematic front view showing a unit building to which construction method II is applied. 6A and 6B show a specific structure of construction method II, where FIG. 6A is a front view and FIG. 6B is a cross-sectional view. 7A and 7B illustrate the principle of strengthening the rigidity of a beam of the construction method II, where FIG. 7A is a schematic diagram illustrating a deformation state of the beam, FIG. 7B is a schematic diagram illustrating a beam unit model, and FIG. FIG. FIG. 8 shows the principle of rigidity enhancement of the unit frame of construction method II, (A) is a schematic diagram showing a deformed state of a beam, and (B) is a schematic diagram showing a frame structure model. FIG. 9 is a schematic view showing a joint structure by the construction method III of adjacent building units. 10 is a cross-sectional view showing a main part of FIG. FIG. 11 is a schematic diagram illustrating an example of joining of building units. FIG. 12 shows a modified example of the construction method III, (A) is a plan view showing a joint portion of a lower floor building unit, and (B) is a sectional view taken along line BB in (A). FIG. 13 is a perspective view showing a perforated spacer. FIG. 14 shows a modified example of the construction method III, in which (A) is a plan view showing a joint portion of a lower-floor building unit, and (B) is a sectional view taken along line BB in (A). FIG. 15 shows a modified example of construction method III, (A) is a plan view showing a joint portion of a lower floor building unit, and (B) is a sectional view taken along line BB in (A). FIG. 16 shows a building unit to which the construction method IV is applied, (A) is a front view showing the lowest floor building unit, and (B) is a front view showing the upper floor building unit. FIG. 17 is a schematic view showing the principle of strengthening the rigidity of the frame of the construction method IV. FIG. 18 is a schematic diagram showing an example of rigidity enhancement of a frame of construction method IV. FIG. 19 is a front view showing an example of attaching diagonal members of construction method IV. 20A and 20B show the lower end attachment portion of the diagonal member, where FIG. 20A is a front view and FIG. 20B is a cross-sectional view. FIG. 21 is a cross-sectional view showing an intermediate portion of the ceiling beam to which the upper end portion of the diagonal member is attached.

Explanation of symbols

1 unit building 10 building unit 11 pipe pillar
23 Ceiling beams
23J joint piece
32 Floor beams
32J Joint piece 61A Bolt insertion hole 61B Bolt mounting operation hole 61C Nut mounting operation hole 60, 70, 80, 90 Spacer 61 Bolt 62 Nut
81 Protrusion

Claims (4)

Bolt joints between adjacent columnars across a gap between adjacent building units ,
Bolt insertion holes are provided coaxially on each of the opposing side walls of the pipe columns arranged side by side, and a bolt mounting operation hole is provided on the rear side wall of the side wall provided with the bolt insertion holes of one of the pipe columns, and the other pipe column is provided. The nut mounting operation hole is provided on the side wall on the back side of the side wall provided with the bolt insertion hole,
A perforated spacer that is coaxially arranged in the bolt insertion hole provided on the opposite side wall of the pipe columns arranged side by side is provided in a gap sandwiched between the side walls,
Bolts inserted from the bolt mounting operation holes of one tube column are inserted into the bolt insertion holes of both tube columns, and nuts inserted from the nut mounting operation holes of the other tube column are screwed into the bolts . A joining structure,
Another building unit is arranged on at least one building unit of the adjacent building units, and a ceiling beam rigidly joined to a pipe column of the at least one building unit via a joint piece; The floor beam rigidly joined to the pipe column of the building unit via the joint piece is stacked up and down,
The lower half of the perforated spacer is provided in the gap between the adjacent pipe columns of the adjacent building units, and the juxtaposed pipe columns are bolted to the lower half of the perforated spacer,
While bolting the pipe column of the other building unit to the upper half extending upward from the lower half of the perforated spacer,
Protruding portions of the lower half of the perforated spacer are provided in the gap between the adjacent ceiling beam joint pieces of the adjacent building units, and the joint pieces are bolted to the protruding portions of the perforated spacer,
Join one end of the ceiling beam and floor beam of the building unit placed above and below via their joint piece, perforated spacer, and pipe column, and also connect the other end of the ceiling beam and floor beam Joining structure of unit buildings to be joined. The unit building joint structure according to claim 1 , wherein the bolt is a high-strength bolt. The unit building joint structure according to claim 2 , wherein the high-strength bolt has a torcia shape. The joint structure of unit buildings according to any one of claims 1 to 3 , wherein the tube pillars are bolted at a plurality of positions of an upper end portion, a lower end portion and an intermediate portion thereof.

Images