JP2010001651A - Girder and beam connection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a girder and beam connection device which is simple in structure, and fastens beams onto a girder made of an H-steel from both sides to mount the former on the latter, to thereby improve the tensile strength of the beams. <P>SOLUTION: According to the structure of the girder and beam connection device, end plates 9, 14 of the respective beams 5, 10 opposed to each other across the girder 1 are mounted on the beam 1 by means of mounting bolts 15. Then reinforcing members 17 are arranged at a corner angle formed by the end plate 9 of one of the beams 5 and a wave 2, and at a corner angle formed by the end plate 14 of the other beam 10 opposed to the one beam across the girder 1 and a wave 11, and a reinforcing bolt 18 is diagonally penetrated into a connection portion via the reinforcing members 17. Furthermore, the reinforcing bolts 18 are arranged at a plurality of locations in a staggered manner. Also the reinforcing members 17 each have a curved seat bearer 22 formed therein, and the reinforcing bolt 18 has a curved bearing 21 formed thereon. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a joining apparatus for a large beam and a small beam, which are attached to a large beam of H-shaped steel by fastening the small beam from both sides.

In recent years, it has been natural to use H-shaped steel for buildings and buildings that require strength in the construction industry. A large beam that is attached to a large beam of H-shaped steel by fastening or welding a small beam with a bolt or the like. Many methods and structures for joining small beams have been proposed. In particular, as a relatively simple joining structure, a joining structure is disclosed in which a joint is attached to the upper and lower flanges of an H-shaped steel beam and the end plates of opposite beams on both sides are fastened to this side with bolts. Has been. In addition, since the tensile strength of the small beam is weak in this structure, a substructure is attached to the wave section of the H-beam, and the end plate of the small beam is also fastened to the substructure with bolts to improve the strength. Is also disclosed. (For example, see Patent Document 1)
JP-A-8-60739

  However, in the above-described conventional configuration, when attaching the small beam to the H-beam large beam, a joint is attached to the upper and lower flanges of the large beam, and an auxiliary metal is attached to the wave portion of the large beam, and the end of the small beam is attached. Since the plate is fastened to the joint and the auxiliary metal by bolts, a separate joint and auxiliary metal are required, which increases the joint structure and is inconvenient because of the relationship with the surrounding structure. Moreover, the structure for joining increases and this has also become a factor which also increases cost.

  The present invention solves the above-described conventional problems, and provides a joining device for a large beam and a small beam which has a simple structure and is fastened to a large beam of H-shaped steel from both sides to improve the tensile strength of the small beam. With the goal.

  In order to solve the above-described problems, a joining apparatus for a girder and a girder according to the present invention is to attach a girder and an end plate of the girder opposite to each other across the girder to the girder with a mounting bolt, and end plate of one girder. A reinforcing member is disposed at the corner formed by the corner formed by the wave and the corner of the other small beam facing each other across the large beam, and the corner formed by the wave, and the reinforcing bolt is inclined through the reinforcing member. It is set as the structure made to fasten. Therefore, since the substantially central portions of the small beams facing each other across the large beam are fastened, the tensile strength of the small beam is improved.

  In addition, the second large beam / small beam joining apparatus of the present invention has a configuration in which a plurality of reinforcing bolts are alternately arranged. Therefore, the tensile strength of the above-mentioned beam is further improved.

  Furthermore, the third large beam / small beam joining apparatus of the present invention has a configuration in which a curved washer is formed on the reinforcing member and a curved washer is provided on the reinforcing bolt. Therefore, if the reinforcing bolt is fastened, it is attached in conformity with the curved surface seat of the reinforcing member, so that a fastening error is prevented.

  With the above-described structure, the apparatus for joining a girder and a girder of the present invention has the above-described configuration, so that the substantially central portion of the girder facing each other across the girder is also fastened with a reinforcing bolt, thereby improving the tensile strength of the girder and reducing the cost. A strong joint structure can be obtained without using high and time-consuming welding. Moreover, the tensile strength of the above-mentioned beam can be further improved by arranging a plurality of reinforcing bolts alternately. Furthermore, since the curved member is formed on the reinforcing member and the curved member is provided with the curved washer, if the reinforcing bolt is fastened, it can be attached to the curved member of the reinforcing member so that a mistake in tightening can be prevented. Many functions and effects can be obtained.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional plan view of a principal part of a joining apparatus for large beams and small beams according to the present invention, and FIG. 2 is an exploded perspective view. In both figures, reference numeral 1 denotes a large beam of H-shaped steel, which is composed of an upper flange 3 and a lower flange 4 above and below the wave 2. Reference numeral 5 denotes one small beam having an upper flange 7 and a lower flange 8 above and below the wave 6, and an end plate 9 as an attachment plate is integrally formed at the end, and similarly, the other small beam 10 is formed. 1 also has an upper flange 12 and a lower flange 13 above and below the wave 11, and an end plate 14 as a mounting plate is integrally formed at the end. In order to join the small beam 5 and the small beam 10 facing the H-shaped steel large beam 1, as shown in FIG. 1, the end plate 9 of one small beam 5 and the end plate 14 of the other small beam 10. Are opposed to each other with the wave 2 of the large beam 1 interposed therebetween, and are fastened with attachment bolts 15 and nuts 16 in the vicinity of both ends.

  Further, in the present invention, the corner formed by the end plate 9 and the wave 6 of one small beam 5 and the end plate 14 and the wave 11 of the other small beam 10 facing each other across the wave 2 of the large beam 1 are formed. Reinforcing metal fittings 17 are disposed at the corners, and the reinforcing bolts 18 and nuts 19 are fastened obliquely via the reinforcing metal fittings 17. At this time, if the flaw hole 20 is previously formed in the wave 2 of the large beam 1 as shown in FIG. 2, the fastening is smooth. Further, when a plurality of the reinforcing bolt structures are arranged alternately, the substantially central portions of the small beams 5 and 10 are firmly fastened, so that the tensile strength of the small beams is further improved. Further, the reinforcing metal fittings 17 provided at the respective corners may be in contact with the wave and the side surface of the end plate, but become stronger when integrated by welding. By adopting such a bolt fastening structure, it is possible to perform strong joining without using costly and time-consuming welding, and the work at the construction site is simplified, so that transportation with small materials becomes possible.

  Next, a fastening configuration of the reinforcing bracket 17 and the reinforcing bolt 18 will be described with reference to FIG. FIG. 3 is an enlarged cross-sectional view of the main parts of the reinforcing bracket and the reinforcing bolt. A curved washer 21 is used for the reinforcing bolt 18, and a curved surface that matches the curved surface is formed as a curved seat receiver 22 on the reinforcing bracket 17. . Therefore, when the reinforcing bolt 18 is screwed in joining the large beam and the small beam, the curved washer 21 of the reinforcing bolt 18 is fastened while being matched to the curved seat receiver 22 of the reinforcing bracket 17, so that the bolt hole is formed slightly larger. However, it is fastened and fixed at the center of the bolt hole.

  The apparatus for joining a large beam and a small beam according to the present invention is such that a small beam is fastened and attached to a large beam of H-shaped steel from both sides to improve the tensile strength of the small beam. Useful in the construction industry.

Cross-sectional plan view of the main part of the joining apparatus for large beams and small beams of the present invention The exploded perspective view of the joining device of a big beam and a small beam of the present invention The principal part expanded sectional view of the reinforcement bolt of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Large beam 2 Wave 5 Small beam 6 Wave 9 End plate 10 Small beam 11 Wave 14 End plate 15 Mounting bolt 16 Nut 17 Reinforcement metal fitting 18 Reinforcement bolt 19 Nut 20 Stiff hole 21 Curved washer 22 Curved washer

Claims (3)

  A large beam and an end plate of the small beam facing each other across the large beam are attached to the large beam with mounting bolts, and a corner formed by the end plate and the wave of one small beam and the other opposed to the other across the large beam. A joining device for a large beam and a small beam, wherein a reinforcing member is disposed at a corner formed by an end plate and a wave of the small beam, and a reinforcing bolt is obliquely fastened through the reinforcing member.   The apparatus for joining large and small beams according to claim 1, wherein a plurality of reinforcing bolts are alternately arranged.   2. The apparatus for joining large and small beams according to claim 1, wherein a curved washer is formed on the reinforcing member and a curved washer is provided on the reinforcing bolt.

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