JP2002356913A - Joining structure of steel frame beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily join steel frame beams mutually by fitting them. SOLUTION: A beam receiving body 3 is provided by overhanging it from a girder 1 in a side part of the girder 1 made of steel frame. A fitting groove 10 in the vertical direction whose upper end in which beam end part is fitted is opened is formed on an end face of the beam receiving body 3, and an end part of a beam 2 is inserted into the fitting groove 10 to fix the beam 2 on the girder 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for joining a steel girder and a girder.

[0002]

2. Description of the Related Art Conventionally, bolts have been used for joining steel beams. That is, the girder and the girder are joined by arranging the girder at right angles to the girder, attaching a connecting plate to the joint portion, and fixing the connecting plate and the steel beam with bolts.

[0003]

In the above-mentioned conventional structure, the small beam must be held in a predetermined position while being suspended by a crane while bolts are fastened to fix the small beam to the large beam. In addition, since the beams suspended by the crane are fastened by bolts, the beams were unstable during the fastening operation, which involved danger. Further, since many bolts must be fastened at one location, the operation took time.

Japanese Patent Application Laid-Open No. 6-341168 discloses a method for temporarily joining small beams at the time of joining, which discloses a joining method and a joining structure of concrete beams. According to the present invention, a concave portion is provided in a concrete girder, and an end portion of a concrete beam is locked in the concave portion so as to be temporarily fixed. Although the present invention is common to the present invention in that the girder and the girder are joined by locking, the above-mentioned invention requires the provision of a concave portion and cannot be applied to a steel beam.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to easily and quickly join steel beams by fitting.

[0006]

According to the present invention, a small beam receiver is provided on the side of a steel beam to protrude from the beam.
By forming a vertical fitting groove with an open upper end at which the end of the beam is fitted, an end of the beam is inserted into the fitting groove. An object of the present invention is to solve the above-mentioned problem by fixing a small beam to a fin. A notch is provided at the end of the vertical plate of the beam,
It is preferable that this notch be engaged with the small beam receiver (claim 2). In the practice of the present invention, the use of bolts in addition to the above configuration is also permitted.

[0007]

According to the present invention, the ends of the small beams are fitted into the fitting grooves of the small beam receivers provided on the large beams, and the lower portions of the small beams are engaged with the end surfaces of the small beam receivers. Small beams can be joined to large beams without using them. When a notch for locking is provided at the end of the small beam, the notch locks to the end face of the small beam receiver, so that lateral movement is prevented.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1 to FIG. 3, a small beam 2 made of H steel having a height lower than that of a large beam 1 is arranged at right angles to the large beam 1 made of H steel. It is. A small beam receiver 3 having a frame shape in a plan view is fixed to a side portion of the large beam 1. The small beam receiver 3 is composed of opposed side plates 4 and 4 and a bottom plate 5, and the ends of these plates protrude from the edges of the upper plate 6 and the lower plate 7 of the girder 1. Further, the side plate 4,
The opposing space 4 is a space where the upper plate 8 and the lower plate 9 of the beam 2 can be inserted and a little play can be obtained. The beam 2 is fitted inside the both side plates 4 and the bottom plate 5. Into a fitting groove 10. That is, the fitting groove 10 is open at the top, so that the upper surface of the small beam 2 and the upper surface of the large beam 1 fitted at the same depth have the same height.

The end of the small beam 2 is fitted into the fitting groove 10 of the small beam receiving body 3 configured as described above, and the lower plate 9 of the small beam 2 is fitted to the bottom plate 5 of the small beam receiving body 3. Lock the beam 1 to the beam 2
Are joined. A connecting plate 11 is provided at an upper plate end of the small beam 2. The end of the connecting plate 11 protrudes from the end of the beam 2, and the connecting plates 11 of the opposing beams 2, 2 are overlapped with each other and can be connected by bolts 12. By connecting the connecting plates of the opposing beams with the connecting plates 11, a function of preventing the beams 2 from moving laterally can be obtained. The through holes for the bolts 12 provided in the connecting plate 11 can be used for hooking when the small beam 2 is lifted by a crane. The reference numeral 13 in the figure denotes a stud for integrating the beam and the concrete.

In order to join the small beam 2 to the large beam 1 according to this embodiment, the small beam receiver 3 is fixed to the large beam 1 in advance, and the large beam is constructed by a usual method. Next, the beam 2 is lifted by a crane, and the end of the beam 2 is
Into the fitting groove 10 (FIG. 4). Only by such an operation, the small beam can be joined to the large beam.

As described above, since the small beams can be joined to the large beams only by lifting and dropping the small beams 2, the joining operation can be performed very quickly, and in addition, the small beams are unstable. Since it is not necessary to perform the bolting work, the danger of the work is significantly reduced. In addition, since the small beams are joined to the large beams only by lifting and dropping the small beams, when using the method of joining the small beams to the large beams (ground construction) after assembling the deck plate to the beams on the ground and then using bolts Therefore, there is no need to peel off the deck plate, thereby avoiding waste of work and improving workability.

After the girders and the girders have been joined as described above, concrete is cast on a deck plate arranged on the assembled girders. A stud 13 is provided at the center of the beam in the width direction, and the concrete and the beam are fixed via the stud 13. Therefore, the girder 1 and the girder 2 are completely fixed by the hardening of the concrete,
It does not shift.

[0013]

[Embodiment 2] FIG. 5 shows a structure in which the lower end of a small beam 2 is engaged with a small beam receiving body 3 to prevent lateral movement of the small beam. That is, the front wall 1
4 is provided vertically, and a locking groove 15 is provided at the lower edge of the end of the small beam 2, and the locking groove 15 is locked on the upper portion of the front wall 14. Thus, by locking the locking groove 15 to the front wall, the lateral movement of the small beam 2 can be prevented without providing the connecting plate 11 on the small beam 2.

[0014]

Third Embodiment FIGS. 6 to 8 show a small beam receiving member 3.
Only the vertical plate of the small beam 2 is fitted into the fitting groove 10 of the small beam 2, and the interval between the side walls 4, 4 in the small beam receiver 3 corresponds to the thickness of the vertical plate 16 of the small beam 2. It has been done.
In the drawing, reference numeral 17 denotes an insertion hole for an auxiliary bolt, and the lateral movement of the small beam 2 is prevented by connecting the large beam 1 and the small beam 2 with the auxiliary bolt. The vertical length of the end plate 5 is shorter than the vertical length of the side plate 4, and the small beam 2 is located above the end plate 5.
Are provided as slits 9 to be inserted. Although the auxiliary bolts are joined without being used, the notch 10
This is effective when no is provided. FIG. 9 shows that the front wall 14 is provided in the fitting groove 10 and the locking groove 15 of the small beam 2 is connected to the front wall 14.
To prevent the lateral movement of the small beam 2.

[0015]

According to the present invention, a small beam receiving member is provided on the side of a steel girder so as to protrude from the large beam, and a fitting groove having an upper opening is formed on an end face of the small beam receiving member. Since the small beam is fixed to the large beam by fitting the end of the small beam into the fitting groove, the large beam and the small beam can be joined without using bolts. That is, the joining of the beams is completed only by lifting the small beams and inserting them into the fitting grooves of the small beam receiver. And bolt fastening work such as fastening of a connecting plate is not essential, and even in this case, since the large beam and the small beam are joined, the work can be performed in a stable state. Therefore, workability is improved, and
Danger of work is significantly reduced. In addition, a notch is provided at the end of the vertical beam of the beam, and this notch is locked to the beam receiver, so that the beam can be prevented from moving laterally without bolting. can do.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of Embodiment 1 of the present invention.

FIG. 2 is also a front view of a small beam receiving part.

FIG. 3 is a front sectional view of a state where a small beam is fitted to the same small beam receiving body.

FIG. 4 is a front view showing the construction process.

FIG. 5 is a sectional view of the embodiment 2 of the present invention during construction.

FIG. 6 is a cross-sectional view of Embodiment 3 of the present invention.

FIG. 7 is a front view of the same small beam receiver.

FIG. 8 is a plan view of the same small beam receiver.

FIG. 9 is a cross-sectional view of the embodiment in which the lock can be performed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 girder 2 girder 3 girder receiver 4 side plate of girder receiver 5 bottom plate of girder receiver 10 fitting groove 11 connecting plate 13 stud 14 front plate 15 locking groove

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Riko Harada 2-24-12 Momoi Suginami-ku F-term (reference) 2E125 AA14 AA17 AB01 AC15 AG03 AG04 AG23 AG41 BB01 BB02 BB09 BB16 BC09 BD01 BE04 BE05 BE08 BF01 CA91 EA33

Claims (2)

[Claims] 1. A small beam receiver is provided on a side of a steel beam to protrude from the beam, and an upper end at which an end of the beam is fitted is open at an upper end face of the beam. The joint structure of steel beams, in which the fitting beam in the direction is formed, and the small beam is fixed to the large beam by fitting the end of the small beam into this fitting groove. 2. A notch is provided at an end of a vertical plate of a small beam,
This notch was locked to the beam support,
Steel beam joint structure