JP3547020B2 - Brace of irreplaceable part, connecting structure of land beam - Google Patents

Description

[0001]
[Industrial applications]
This invention also relates Iraka portion of the brace in the housing and other steel building, the Rikuhari connecting junction structure.
[0002]
[Prior art]
As shown in FIG. 10, in the gable roof of the truss frame, as shown in FIG. 10, the pillar 41 on the wife's face and the mountain-shaped roof truss 42 separated inside are connected to the land beam 43, the vertical braces 49A, 49B, and the horizontal braces 51A, 51B or the like. In such a hut assembly, there is one in which the joining structure of the lower end 60 is configured as follows. That is, the end of the land beam connection 43 is bolted to the column base 47 of the pillar 41 by an L-shaped first metal fitting 45 welded in an extended state as shown in FIG. The lower end of the brace bundle 48 and the vertical brace 49A are bolted to the T-shaped second metal fitting 44 welded to the upper surface of the 43.
In the first metal fitting 45, the standing piece 45 is joined to the column base 47 with bolts 46, and the ends of the horizontal braces 51 A, 51 B are joined to the horizontal pieces 45 a with bolts 52. The brace bundle 48 and the vertical brace 49A are overlapped on both surfaces of the standing piece 44b of the second metal fitting 44 and joined by bolts 50.
[0003]
[Problems to be solved by the invention]
However, in the above configuration, since the vertical braces 49A are joined to the ends of the land beam joints 43, the vertical braces are connected to the first joint hardware 45 joining the land beam joints 43 to the pillars 41 as shown in FIG. The pulling force P of 49A acts, and the horizontal piece 45a of the first metal fitting 45 may be deformed as shown in FIG.
In addition, since the two metal fittings 44 and 45 are welded to the land beam joint 42, the processing work in the factory welding is complicated, time-consuming and costly. Further, there is a problem that the heat of welding causes expansion and contraction of the land beam connector 43.
[0004]
The purpose of this invention, no deformation problems junction fittings by braces tension construction site is easy, also good plant productivity components, Iraka portion of the brace which cost reduction can be achieved, the Rikuhari connecting junction structure To provide.
[0005]
[Means for Solving the Problems]
According to the present invention, there is provided an irrelevant part brace / land beam connecting structure provided with an arbitrary part lower end joining hardware which is attached to a steel frame material at a lower end of the irritating part, and a land beam joining, a brace receiving, a vertical brace, and a horizontal brace are provided on the joining hardware. By mounting the members, each member can be attached to the steel frame material without going through a land beam connection. The steel material at the lower end of the irreplaceable portion is a pedestal of an irreplaceable column, an eaves girder, a capital of a hut receiving column, or a box-shaped joint hardware forming these portions.
The lower end joint metal part has a standing piece and a horizontal piece that form an L-shape with each other, and a connecting piece along a vertical direction protrudes from an inner surface of the standing piece. And affixed with a bolt penetrating this standing piece. A bolt insertion hole is provided in each of the pieces of the lower end joint metal part.
The lower end of the vertical brace and the lower end of the brace bundle are overlapped on the connecting piece of the lower end metal fitting, and these members are connected to each other with bolts penetrating the connecting piece. An end of a land beam connection and an end of a horizontal brace are overlapped on the horizontal piece of the lower end joint hardware, and these members are joined to each other with a bolt penetrating the horizontal piece. The vertical brace is for joining the intermediate roof truss remote from the wife surface and the lower end of the stub.
[0006]
[Action]
According to this joint structure, the vertical braces, the brace bundles, and the horizontal braces are directly joined to the steel frame with the lower end joints without going through the land beam connection. An unreasonable load does not act on the beam connection, and a firm connection can be made. For example, since the vertical brace is joined to the connecting piece protruding along the vertical direction on the inner surface of the standing piece of the lower end joint metal piece, the brace tension does not affect the other parts of the lower end joint metal piece, It can receive tension with steel frame. In addition, since the horizontal brace is also joined to the horizontal piece of the lower end joint metal part, the other part of the joint metal part is not affected by the brace tension, and can be tensioned by the steel frame material.
The vertical brace and the brace brace are bolted together on the same connecting piece of the lower end joint hardware, and the land beam joint is bolted to the horizontal piece of the lower end joint hardware together with the horizontal brace. Less work required and good workability. In addition, at the time of construction, if the metal joint at the lower end of the stub is previously joined to a steel frame material such as the column base of the stub, the work of connecting the land beam later can be easily performed. In addition, since the lower end joint metal part is provided as a part independent of the land beam joint, the land beam joint does not require welding of a joint piece or the like, only hole processing is required, and factory productivity is good. In addition, it is easy to prepare land beam joints of various lengths, and the cost can be reduced. Since the connection of the land beams does not require welding, expansion and contraction due to welding heat can be avoided.
[0007]
【Example】
One embodiment of the present invention will be described with reference to FIGS. The brace-land beam connecting structure of the irrelevant portion of this embodiment is applied to the irrelevant portion 1 in a truss-structured shed shown in FIG. In this hut group, the hut section 35 on the wife's face is constructed by the hut grid pillars, i.e., the pillar columns 15, the gas beam 36, and the hut receiving pillar 37, and a plurality of intermediate roof trusses are arranged in parallel with the hut section 35. 2 are arranged, and the bridge 38 and the purlin 39 are spanned. Under the ridge, a land beam link 5 is provided at the lower end between the pillar 15 and the intermediate roof truss 2 adjacent thereto, and through the brace bundles 4 and 19 (FIG. 6), the spider brace is formed. A pair of vertical braces 3A, 3B called are stretched in a cross shape. The outer wall material 34 of the wife surface is provided outside the wife hut assembly portion 35. In addition, a plurality of horizontal braces 6A, 6B are stretched in a cross shape between each of the pillars 15, 37 of the wife's hut assembly 35 and the lower end of the adjacent intermediate roof truss 2. In the hut assembly having this configuration, the joining structure of the members at the lower end of the irrelevant portion indicated by reference numeral A in the figure is configured as shown in FIG.
[0008]
In the joint structure at the lower end of the sparse portion, a sparsely connected lower end metal fitting 7 shown in a plan view, a front view, and a side view in FIGS. 2A, 2B, and 2C, respectively. The metal joint 7 has a standing piece 7a and a horizontal piece 7b that are bent and connected to each other in an L-shape, and a connecting piece 7c protrudes from the inner surface of the standing piece 7a in the vertical direction. The connecting piece 7c is made of a tapered trapezoidal side plate whose lower edge is an inclined side, and is welded to the standing piece 7a at the base end. Bolt insertion holes 8, 9, and 10 are formed in the standing piece 7a, the horizontal piece 7b, and the connecting piece 7c of the lower metal joint 7 at the lower end.
The lower end joint metal fitting 7 has the back surface of the standing piece 7a abutted against the column base 15b of the steel pillar 15 made of steel, and is joined to the column base 15b with a bolt 12 and a nut penetrating the standing piece 7a. . The pillar 15 is made of a square steel pipe, and the column base 15b is made of a box-shaped joint metal as described later.
[0009]
As described above, the pair of vertical braces 3A and 3B are provided between the pillar 15 and the middle roof truss 2 as described above. Of these vertical braces 3A and 3B, the upper end of the middle roof truss 2 and the portion of the middle portion 1 are provided. At the lower end of the vertical brace 3A connecting to the lower end, the end plate portion in the form of a feather plate is overlapped on one surface of the connecting piece 7c of the lower end joint metal part 7. In addition, the lower end of the brace bundle 4 arranged along the inside of the pillar 15 is overlapped with the other surface of the connecting piece 7c, and the lower end of the vertical brace 3A is braceed by the bolt 13 penetrating the connecting piece 7c. The lower end of the bundle 4 is joined to the connecting piece 7c.
[0010]
The land beam connector 5 connecting the pillar 15 and the intermediate roof truss 2 is made of a shape steel such as an upward lip channel steel, and one end is overlapped on the upper surface of the horizontal piece 7b of the lower metal joint 7 at the lower end. The horizontal braces 6A, 6B on both sides of the metal piece 7 have their blade-shaped ends overlapped on the lower surface of the horizontal piece 7b of the lower end joint metal piece 7, and are connected to the land beams 5 by bolts 14 passing through the horizontal piece 7b. Together with the horizontal piece 7b.
The upper end of the brace bundle 4 on the side of the irritating part 1 is perpendicular to the joint hardware 16 bolted to the column head 15a of the irritating column 15, as shown in the side view and the plan view in FIGS. The brace 3B is overlapped with the upper end of the blade plate shape and bolted. That is, the metal joint 16 has a standing piece 16a and a connecting piece 16b that are fixed to each other in a T-shape by welding or the like, the back surface of the standing piece 16a is brought into contact with the column capital part 15a, and penetrates the standing piece 16a. It is attached to the column capital 15a by a bolt 17. The upper end of the brace bundle 4 is overlapped on one surface of the connecting piece 16b of the metal joint 16, and the upper end of the vertical brace 3B is overlapped on the other surface, and the two members 3B, 4 are bolted by the bolt 18 penetrating the connecting piece 16b. Is connected to the connecting piece 16b.
[0011]
The joining of the vertical brace 3B at the lower end portion of the intermediate roof truss 2 indicated by the symbol B in FIG. 7, the brace bundle 19, the land beam connector 5, and the like is performed as shown in FIG. That is, as shown in the plan view, the side view, and the front view in FIGS. 4A, 4B, and 4C, the truss-side end of the land beam connector 5 is attached to the lower end of the intermediate roof truss 2 by welding. The connecting plate 20 is overlapped and joined by bolts 21 penetrating the connecting plate 20. As shown in the plan view and the side view in FIGS. 5A and 5B, a metal joint 22 is attached to the upper surface of the truss-side end of the land beam connector 5 by welding with a horizontal piece 22b. The metal joint 22 has a standing piece 22a and a horizontal piece 22b connected to each other in an L-shape, and has a connecting piece 22c protruding from the inner surface of the standing piece 22a. The lower end of the vertical brace 3B is overlapped on one surface of the connecting piece 22c of the metal fitting 22, the lower end of the brace bundle 19 is overlapped on the other surface of the connecting piece 22c, and a bolt 23 penetrating through the connecting piece 22c. Thereby, the lower end of the vertical brace 3B and the lower end of the brace bundle 19 are joined to the connecting piece 22c.
As shown in FIG. 6, the upper ends of the truss-side brace bundle 19 and the vertical brace 3A are overlapped on both surfaces of a connecting piece 24b of a T-shaped joint fitting 24 attached to the upper end of the intermediate roof truss 2, as shown in FIG. Are joined by bolts 25 penetrating through.
[0012]
As shown in FIG. 8, the lower end of the flat pillar 15 is formed as a box-shaped column base 15 b, and the lower metal joint 5 is attached to the column base 15 b. The box-shaped column base 15b is formed in a box shape with one side open so that a hand or the like can be inserted into the inside during screwing work, and a bolt insertion hole is formed in each surface in advance. The upper end of the grid pillar 26 on the lower floor that receives the pillar 15 is a box-shaped pillar cap 26a, and the top of the pillar cap 26a is fixed to the pillar pillar 26 by a double-sided guide bolt 27 or a tightening bolt 28. The column base 15b is joined. An eave beam 29 made of H-shaped steel is joined to the column head 26a of the grid column 26 by a bolt 30.
[0013]
According to this joint structure, the vertical braces 3A, 3B, the brace bundle 4 and the horizontal braces 6A, 6B are directly connected to the column base 15b of the elastic column 15 without the intermediary of the land beam connector 5, and the lower end joint metal 7 is provided. Therefore, an unreasonable load or bending moment does not act on the land beam joint 5 and an unreasonable load does not act on any lower end joint metal member 7, thereby enabling a firm joint. For example, since the vertical braces 3A and 3B are joined to the connecting piece 7c protruding along the vertical direction on the inner surface of the standing piece 7a of the lower end joining metal piece 7, the influence of the brace load on other parts of the metal piece 7 is provided. , The tension can be applied to the pillar 15. The effective welding length of the connecting piece 7c and its base end can sufficiently resist the eccentric moment due to the tensile force of the vertical braces 3A, 3B. Also, since the horizontal braces 6A and 6B are also joined to the horizontal piece 7b of the metal fitting 7 at the lower end of the irrelevant part, the other parts of the metal 7 are not affected by the tensile force, and may be subjected to the tension by the pillow 15. it can.
[0014]
The vertical braces 3A, 3B and the brace bundle 4 are overlapped on the same connecting piece 7c of the lower end joint metal part 7 and bolted together, and the land beam connector 5 is placed alongside the horizontal braces 6A, 6B next to the lower end joint metal part 7. Since the bolt is joined to the piece 7b, the number of bolted portions is small, and the workability is good. In addition, at the time of construction, if the lower metal joint 7 is joined to the pillar 15 in advance, the work of hanging the land beam connector 5 can be easily performed later. Either the land beam connector 5 or the brace bundle 4 may be joined first, which also improves workability. Furthermore, since the lower end joint metal 7 is provided as a part independent of the land beam connector 5, the land beam connector 5 does not require welding of a joint piece or the like, requires only drilling, and has high factory productivity. Therefore, when preparing the land beam connection 5 having, for example, a standard length P and a double length 2P, it is sufficient to simply prepare profiles having different lengths. The number and cost can be reduced. Since the beam connection 5 does not require welding, expansion and contraction due to welding heat can be avoided.
[0015]
In the above-described embodiment, the joining of the vertical braces 3B, the brace bundles 19, the land beam joints 5 and the like on the intermediate roof truss 2 side is performed through another joint metal 22 welded to the land beam joints 5, As shown in FIG. 9, a joint metal 7 'similar to the lower end joint metal 7 may be used. That is, the lower end of the vertical brace 3B and the lower end of the brace bundle 19 are overlapped on both surfaces of the connecting piece 7c of the joint metal 7 ', and the lower end of the vertical brace 3B and the lower end of the brace bundle 19 are bolted through the connecting piece 7c. Is joined to the connecting piece 7c, and the end of the land beam connector 5 overlapped on the horizontal piece 7b is connected to the horizontal piece 7b by a bolt 32 penetrating the horizontal piece 7b. The standing piece 7a of the metal joint 7 'is joined to the lower end of the intermediate roof truss 2 by a bolt 33 penetrating the standing piece 7a. In this case, since there is no need to weld the metal joints 7, 7 'on both sides to the land beam connector 5, the land beam connector 5 can be made of a single material, and the expansion and contraction of the land beam connector 5 due to welding heat can be prevented. It can be avoided more reliably.
[0016]
Also, in each of the above embodiments, the lower end joint fitting 7 is joined to the column base 15a of the pillar 15; however, the lower end joint fitting 7 may be made of various steel members at the lower end of the stand depending on the hut structure. Can be joined. For example, it may be joined to the column head 26a of the lower grid column 26, and when the eaves beam 29 is a through beam, it is directly connected to the box-shaped joint provided on the eaves beam 29 or directly to the eaves beam 29 itself. You may make it join.
[0017]
【The invention's effect】
The brace and land beam joining structure of an irrelevant part of the present invention has a standing piece and a lateral piece connected to each other in an L-shape, and a connecting part protruding from the inner surface of the standing piece is provided with a arbitrarily-part lower end fitting. The metal piece is bolted to the lower end of the steel member with the standing piece and attached, and the lower end of the vertical brace and the lower end of the brace bundle are overlapped with each other and joined to the connecting piece with bolts, and landed on the horizontal piece. Since the end of the beam joint and the end of the horizontal brace are overlapped and bolted together, the vertical brace, the land beam joint, and the horizontal brace can be easily joined to the steel frame with one piece of metal, and the joint metal is deformed by the brace tension There is no problem of bending moment load between the bridge and the land beam, the construction is easy on site, the factory productivity of the component is good, and the cost can be reduced. In addition, expansion and contraction of the land beam connection due to welding heat can be avoided.
[Brief description of the drawings]
FIG. 1A is a perspective view of a brace-to-land beam connection structure of an irrelevant portion according to an embodiment of the present invention, and FIG. 1B is a front view of the structure.
FIGS. 2A to 2C are a plan view, a front view, and a side view, respectively, of a metal joint used in the joint structure.
FIG. 3A is a side view showing a joining structure at an upper end of the same portion, and FIG. 3B is a plan view of the joining structure.
FIGS. 4A to 4C are a plan view, a side view, and a front view showing a joint structure at a lower end portion of the chevron truss.
FIGS. 5A and 5B are a plan view and a side view, respectively, of a land beam connection used in the joint structure of the embodiment.
FIG. 6 is a side view showing the overall configuration of the joint structure of the embodiment.
FIG. 7 is a perspective view showing a gable-roof shed to which the joining structure of the embodiment is applied.
FIG. 8 is an exploded perspective view showing the vicinity of an arbor in the embodiment.
FIG. 9 is a side view showing a modification of the joint structure at the lower end of the intermediate roof truss.
FIG. 10 is a side view showing the entire structure of a conventional example.
11A to 11C are a plan view, a side view, and a front view of a conventional example, respectively.
12A and 12B are a plan view and a side view of a land beam connection in a conventional example.
FIG. 13 is an explanatory diagram showing a problem of the conventional example.
[Explanation of symbols]
DESCRIPTION OF REFERENCE NUMERALS 1 ... some parts, 2 ... middle roof truss, 3A, 3B ... vertical braces, 4 ... bundles for vertical braces, 5 ... land beam connection, 6A, 6B ... horizontal braces, 7, 7 '... 7a ... standing piece, 7b ... horizontal piece, 7c ... connecting piece, 8-10 ... bolt insertion hole, 12-14, 21, 23, 31, 33 ... bolt, 15 ... irreplaceable pillar, 15b ... pillar base, 34 ... ALC exterior wall plate

Claims (1)

An upright piece and a transverse piece having an L-shape are formed with each other, and a connecting portion along a vertical direction is provided on an inner surface of the standing piece. The lower end of a vertical brace for joining with the intermediate roof truss which is inwardly separated from the wedge surface, is attached to the connecting piece of the lower end joint fitting by attaching the bolt to the rear side of the standing piece and abutting the bolt with the standing piece. And the lower end of the brace bundle are overlapped with each other, joined by bolts penetrating the connecting piece, and the end of the land beam connection and the end of the horizontal brace are overlapped on the horizontal piece of the lower end joint fitting. And a brace-land beam connecting structure of a desired portion which is connected with a bolt penetrating the horizontal piece.

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