JP2006200273A - Structure for joining steel girder and steel beam together - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure which enables a steel girder and a steel beam to be easily joined together without the need for much labor in such a manner as to be advantageous in terms of cost. <P>SOLUTION: Plate parts 5 and 6 of a metal gusset 3, which is equipped with the plate part 5 along a web 1c of the girder 1 and the plate part 6 along a web 2c of the beam 2c, are attached to the web 1c of the girder 1 and the web 2c of the beam 2 by means of a bolt 11, respectively, so that the girder 1 and the beam 2 can be joined together. The metal gusset 3 is provided with a retainer plate part 7 along the undersurface side of the lower flange 2b of the beam 2; an end 4a of a horizontal brace 4 for a floor is provided on the undersurface side of the retainer plate part 7; the retainer plate part 7 of the gusset 3 and the lower flange 2b of the beam 2 are joined together by means of the bolt 11; and the retainer plate part 7 of the gusset 3 and the end 4a of the horizontal brace 4 are also joined together by means of the bolt 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a joining structure of a steel beam and beam.

  In steel-frame buildings, as a joint structure for joining the end of a steel beam to the middle part of the steel beam in the longitudinal direction, such as torso, etc. There has been conventionally provided a joint in which a joint for joint is attached to the beam side in advance by welding and these joints are bolted together in the field.

  However, in the conventional joint structure as described above, it is necessary to attach the joint joint to each of the large beam and the small beam by welding in advance, which is troublesome and laborious and expensive. There is a problem of end.

  There are also the following problems. That is, as a method of attaching the joint to the large beam, there is a method of determining the number and position of the joint to be attached to the large beam from the number and position of the small beams to be joined to the large beam, and attaching the joint at that position.

  In this method, the number of joints attached to the girder matches the number of small beams joined to the girder, and all joints can be used for joining the girder, resulting in wasted joints on the girder side. On the other hand, the number and position of joints attached to the girder must correspond to the number and joint positions of the small beams joined to the girder, and the fitting of the joint to the girder is somewhat troublesome. There's a problem.

  Therefore, a method is conceivable in which the joints are attached to the large beams at a predetermined pitch in the length direction, and the small beams are joined to some of the joints selected from them. In this method, it is possible to save time and effort to match the number and position of joints attached to the large beam to the number and position of the small beams joined to the large beam, and it is easy to attach the joint to the large beam without any effort. Although there is an advantage that can be obtained, there is a problem in that a joint that is not used for joining a small beam remains in the large beam, and the joint on the large beam side is wasted. In particular, when attaching the joint to the girder by welding as described above, the cost is unnecessarily high.

  In the technical background as described above, an object of the present invention is to provide a structure capable of easily and cost-effectively joining a steel beam and a beam without labor.

The above problem is a structure in which the end portion of the steel beam is joined to the middle portion in the length direction of the steel beam.
The large and small beams each have a flange and a web;
Each plate part of the gusset hardware with the plate part along the web of the large beam and the plate part along the web of the small beam is attached to the web of each beam with the bolt, so that the large beam and the small beam are joined. It is solved by the joint structure of steel beam and beam.

  In this structure, the gusset hardware is attached to the large beam and the gusset hardware is attached to the small beam with bolts. Therefore, it is easy to install the gusset hardware to each beam without welding and without trouble. Moreover, it can be carried out advantageously in terms of cost.

  In addition, because the gusset hardware has a structure that serves as both the joint on the large beam side and the joint on the small beam side, the joint required for joining the large beam and the small beam is only gusset hardware, and the large beam and the small beam can be simplified. Can be joined by structure.

  The gusset hardware may be produced by joining a plurality of plates by welding, may be produced by joining by other joining methods, or a plate bending molded product. , May consist of other things. Even if the gusset hardware is manufactured by welding plates, etc., it is only necessary to weld pieces such as plates, compared to the case where the joint is attached to a long beam by welding. Can be easily manufactured by welding.

  In the above structure, the gusset hardware may be provided with a plate portion that protrudes along the flange of the small beam, and the plate portion and the flange of the small beam may be joined by a bolt. In this case, the rigidity of the joint portion between the large beam and the small beam can be increased not only in the vertical direction but also in the horizontal direction, and a firm joint portion can be formed.

  Further, the small beam has a lower flange, the gusset hardware is provided with a receiving plate portion along a lower surface side of the lower flange, and an end portion of a floor horizontal brace is provided on the lower surface side of the receiving plate portion. The receiving plate portion of the hardware and the lower flange of the small beam may be joined by a bolt, and the receiving plate portion of the gusset hardware and the end of the floor horizontal brace may be joined by the bolt.

  In this case as well, the rigidity of the joint between the large beam and the small beam can be increased not only in the vertical direction but also in the horizontal direction by bolting the receiving plate portion provided on the gusset hardware and the lower flange of the small beam. And a firm joint can be formed.

  In addition, the end of the floor horizontal brace is provided on the lower surface side of the receiving plate portion of the gusset hardware, and the end of the receiving plate portion and the floor horizontal brace is connected by a bolt joining the receiving plate portion and the lower flange of the beam. Since the parts are bolted together, these three can be bolted together with a simple structure.

Further, the above problem is a structure in which the end portion of the steel beam is joined to the middle portion in the length direction of the steel beam.
The large and small beams each have a flange and a web;
Each plate portion of the gusset hardware including the plate portion along the web and / or the flange of the large beam and the plate portion along the web and / or the flange of the small beam is bolted to the web and / or the flange of each beam. This can also be solved by a joining structure of a steel beam and beam, which is characterized in that the beam and beam are joined.

  In other words, the installation of gusset hardware to large beams and the installation of gusset hardware to small beams are done with bolts, so installation of gusset hardware to each beam is easy and cost-effective without welding. Can be advantageously performed. In addition, because the gusset hardware has a structure that serves as both the joint on the large beam side and the joint on the small beam side, the joint required for joining the large beam and the small beam is only gusset hardware, and the large beam and the small beam can be simplified. Can be joined by structure.

Further, in each of the above structures, bolt passages for attaching gusset hardware are provided at a predetermined pitch in the length direction in the girder,
A small beam is joined by gusset hardware using some bolt holes selected from among them,
The girder may be left with an empty bolt hole to which no gusset hardware is attached.

  In this structure, it is not necessary to match the number and position of bolt holes provided in the large beam with the number and position of the small beams, and it is easy to form the bolt holes in the large beam at a predetermined pitch without labor. The bolt holes that are not used for joining the beam can be left as empty bolt holes, and mounting of gusset hardware can be omitted. The beams can be joined in a cost-effective manner.

  Since the present invention is as described above, the steel large beam and the small beam can be easily and cost-effectively joined without taking time and effort.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  In the joint structure of the embodiment shown in FIGS. 1 and 2, 1 is a trunk difference as a steel large beam, 2 is a steel beam, 3 is a gusset hardware, and 4 is a floor horizontal brace.

  The trunk difference 1 is made of an H-shaped steel material having upper and lower flanges 1a and 1b and a web 1c connecting these flanges 1a and 1b, and the small beam 2 is also a web connecting the upper and lower flanges 2a and 2b and these flanges 2a and 2b. It consists of H-shaped steel materials having 2c.

  The gusset hardware 3 is formed by joining, for example, a plurality of steel plates by welding, and the like. The vertical first plate portion 5 along the web 1c of the trunk difference 1 and the vertical along the web 2c of the small beam 2 are used. A second plate portion 6 and a third plate portion 7 as a horizontal receiving plate along the lower surface side of the lower flange 2 b of the small beam 2, and the third plate portion 7 is higher than the first plate portion 5. The second plate portion 6 is provided at the intermediate portion in the width direction of the first and third plate portions 5 and 7 while being provided at the intermediate portion in the vertical direction. Reference numeral 8 denotes a reinforcing member that supports the third plate portion 7 from the bottom in the gusset hardware 3. The gusset hardware 3 inserts the second plate portion 6 into a slit 9 provided in the lower flange 2b of the end portion of the small beam 2 so that the second plate portion 6 is inserted into the web 2c at the end portion of the small beam 2. The third plate portion 7 can be made to follow the lower surface side of the lower flange 2b of the end portion of the small beam 2.

  The first plate portion 5 of the gusset hardware 3 is provided with bolt holes 10 on both sides of the second plate portion 6 and above the third plate portion 7, correspondingly. Bolt through-holes 10 are provided in the web 1c at the intermediate portion in the longitudinal direction of the trunk difference 1, and the first plate portion 5 of the gusset hardware 3 is supported on the lower flange 1b of the trunk difference 1 so that The web 1c can be joined with bolts 11.

  Further, the second plate portion 6 of the gusset hardware 3 is also provided with bolt through holes 10. Correspondingly, the bolt through holes 10 are provided in the web 2 c of the beam 2, and the third plate portion of the gusset hardware 3. The second plate portion 6 can be joined to the web of the small beam 2 with bolts 11 in a state where 7 is placed along the lower surface side of the lower flange 2b of the small beam 2.

  Further, the third plate portion 7 of the gusset metal 3 is provided with bolt through holes 10 on both sides sandwiching the second plate portion 6, and correspondingly, the bolt through holes 10 are formed in the lower flange 2 b of the small beam 2. The third plate portion 7 can be joined to the lower flange 2b of the small beam 2 with bolts 11.

  For joining the trunk difference 1 and the beam 2, the first plate portion 5 of the gusset hardware 3 is attached to the web 1 c of the trunk difference 1 with bolts 11. Next, the second plate portion 6 of the gusset hardware 3 is inserted into the slit 9 at the end of the small beam 2 so that the second plate portion 6 and the third plate portion 7 are aligned with the web 2c of the small beam 2 and the lower flange 2b. The second and third plate portions 7 are attached to the web 2c and the lower flange 2b of the beam 2 with bolts 11 ..., and at this time, the end plate portion 4a of the floor horizontal brace 4 is attached to the third plate portion 7 of the gusset hardware 3. The end plate 4a of the floor horizontal brace 4 is installed so as to overlap with the lower surface side of the gusset 3 using the bolt 11 joining the third plate portion 7 and the lower flange 2b of the beam 2 The third plate portion 7 is joined. In this way, the end portion of the small beam 2 is joined to the intermediate portion in the length direction of the trunk difference 1.

  In the above-described joint structure, the gusset hardware 3 is used for joining the trunk difference 1 and the small beam 2, and both the attachment of the gusset hardware 3 to the trunk difference 1 and the attachment of the gusset hardware 3 to the small beam 2 are bolts 11. Therefore, the attachment of the gusset hardware 3 to each of the beams 1 and 2 can be easily performed without welding and without any trouble, and can be advantageously performed in terms of cost. In addition, since the gusset hardware 3 is configured to serve as a joint on the trunk difference 1 side and a joint on the small beam 2 side, the joint necessary for joining the trunk difference 1 and the small beam 2 is only the gusset hardware 3. The difference 1 and the beam 2 can be joined with a simple structure.

  In addition, even if the gusset hardware 3 is manufactured by joining plates by welding, it is only necessary to weld pieces such as plates compared to the case where the joint is attached to the long beams 1 and 2 by welding. The gusset hardware 3 can be easily manufactured by welding.

  Moreover, in said joining structure, the 3rd plate part 7 is provided in the gusset metal object 3, and it is good for the 3rd plate part 7 and the lower flange 2b of the small beam 2 to be joined by the volt | bolt 11 .... In this case, the rigidity of the joint portion between the trunk difference 1 and the small beam 2 can be increased not only in the vertical direction but also in the horizontal direction, and a firm joint portion can be formed.

  Further, in the above-described joining structure, the end of the floor horizontal brace 4 is provided on the lower surface side of the third plate portion of the gusset hardware 3, and the bolt 11 that joins the third plate portion 7 and the lower flange 2 b of the small beam 2. Since the third plate portion 7 and the end portion of the floor horizontal brace 4 are joined together, the third plate portion 7, the lower flange 2b of the beam 2 and the end portion of the floor horizontal brace 4 are bolted with a simple structure. Can be joined.

  And, as described above, by adopting a structure in which the trunk difference 1 and the small beam 2 are joined by the bolts 11 using the gusset hardware 3, the bolt through holes for attaching the gusset hardware to the web 1c of the trunk difference 1 are adopted. 10 is provided at a predetermined pitch in the length direction, and a small beam 2 is joined by a gusset hardware 3 using a part of the bolt through holes selected from them, and the gusset hardware 3 is attached to the trunk difference 1. It is also possible to leave empty bolt holes that are not provided, so that the number and position of the bolt holes provided in the trunk difference 1 do not need to match the number of joints and the joint position of the small beam 2, The formation of the bolt through holes 10 to the web 1c of the trunk difference 1 can be easily performed at a predetermined pitch without requiring labor, and in addition to the bolt through holes not used for joining the beam 2 Leave it as an empty bolt hole, Tsu DOO attachment of fittings 3 also less wasted can be omitted, it is possible to bond the joists 2 in cost-effectively cylinder difference 1.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where the trunk difference is a large beam is shown. However, the structure of the present invention can be widely used as a joint structure of a large beam and a small beam in various buildings and structures. The large and small beams are not limited to the H-shaped steel material, and may be various steel beams including a web and a flange.

  Moreover, although the case where the gusset hardware 3 is bolted to both the web 2c of the small beam 2 and the flange 2b is shown in the above embodiment, it may be configured to be bolted only to the web of the small beam. However, bolts may be joined only to the flanges of the small beams. Further, in the above embodiment, the case where the gusset hardware 3 is bolted only to the web 1c of the girder 1 is shown, but may be bolted to both the web and the flange of the girder. Bolts may be joined only to the flange.

FIG. (A) shows the joint structure of the embodiment, and is a perspective view showing the trunk difference, the beam and the gusset hardware in a separated state, and FIG. (B) is another perspective view of the gusset hardware. Fig. (A) is a sectional front view of the joint, Fig. (B) is a sectional view taken along the line II of Fig. (A), and Fig. (C) is a sectional view taken along the line II-II of Fig. (A). It is.

Explanation of symbols

1 ... Body difference (steel girder)
DESCRIPTION OF SYMBOLS 1a, 1b ... Flange 1c ... Web 2 ... Steel beam 2a, 2b ... Flange 2c ... Web 3 ... Gusset hardware 4 ... Floor horizontal brace 5 ... 1st plate part 6 ... 2nd plate part 7 ... 3rd plate part ( Receiving plate)
10 ... Bolt hole 11 ... Bolt

Claims (5)

It is a structure in which the end of a steel beam is joined to the middle part of the steel beam in the length direction,
The large and small beams each have a flange and a web;
Each plate part of the gusset hardware with the plate part along the web of the large beam and the plate part along the web of the small beam is attached to the web of each beam with the bolt, so that the large beam and the small beam are joined. This is a joint structure of steel beams and beams.   2. The steel large beam and the small beam according to claim 1, wherein the gusset hardware includes a plate portion that protrudes along the flange of the small beam, and the plate portion and the flange of the small beam are joined by a bolt. Beam connection structure.   The small beam has a lower flange, the gusset hardware is provided with a receiving plate portion along the lower surface side of the lower flange, and an end portion of a floor horizontal brace is provided on the lower surface side of the receiving plate portion. The steel large beam according to claim 1, wherein the receiving plate portion of the steel beam and the lower flange of the small beam are joined by a bolt, and the receiving plate portion of the gusset hardware and the end of the floor horizontal brace are joined by the bolt. And beam connection structure. It is a structure in which the end of a steel beam is joined to the middle part of the steel beam in the length direction,
The large and small beams each have a flange and a web;
Each plate portion of the gusset hardware including the plate portion along the web and / or the flange of the large beam and the plate portion along the web and / or the flange of the small beam is bolted to the web and / or the flange of each beam. A structure for joining steel beams and beams, characterized in that the beams and beams are joined. Bolt holes for attaching gusset hardware to the girder are provided at a predetermined pitch in the length direction,
A small beam is joined by gusset hardware using some bolt holes selected from among them,
The joining structure of a steel large beam and a small beam according to any one of claims 1 to 4, wherein an empty bolt hole to which no gusset hardware is attached is left in the large beam.

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