JPH06101271A - Method of joint construction of steel frame girder and joint structure - Google Patents

Abstract

PURPOSE:To simplify joining operation by forming a stepped section to the web of the joint of a girder consisting of H-steel and a dovetail tenon to a flange while sliding in a splice plate with a dovetail groove from the lateral direction and clamping the stationary plate of the stepped section by a bolt. CONSTITUTION:A stationary plate 11 with a bolthole is installed to a stepped section formed to the web 5 of the connecting section of an H-shaped steel coupling arm 1 mounted to a post 2 while dovetail tenons 4 are set up in the cross direction of flanges 3. The stationary plate 11 and the dovetail tenons 4 are also installed to a girder 8 in response to the coupling arm 1. The girder 8 is connected to the coupling arm 1, splice plates 13 having dovetail grooves 12 are slid in from the lateral direction, and the coupling arm 1 and the girder 8 are combined while the stationary plate 11 is clamped by a bolt 9. Accordingly, the joining operation of the girder 8 can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint construction method and a joint structure for attaching a steel beam used in a building such as a steel frame structure or a reinforced steel frame structure to a steel frame column.

[0002]

2. Description of the Related Art Conventionally, to connect a steel beam and a steel column,
As shown in FIG. 3, a large number of bolt holes 26 are bored in the ends of the connecting arms 22 of the steel frame columns 21 and the flanges 24 and webs 25 of the beams 23 attached to the connecting arms 22, and the bolts 26 are placed on the flanges 24 of the joints when constructing the steel frame. An attachment plate 27 was applied to the lower surface and both side surfaces of the web 25 and tightened with a large number of high-strength bolts 28.

[0003]

Since a large number of holes for bolts are preliminarily placed at the end of the conventional steel frame beam, it is necessary to perform processing for that purpose, which is troublesome, and the high-strength holt tightening performed at the time of erection is required. Needs to perform two-stage tightening of the primary and secondary, and the number of high-strength bolts is large, so it takes a long time for the work, and in the case of rain, it is not possible to tighten the high-strength bolts.
There was an unfavorable drawback in shortening the construction period.

An object of the present invention is to solve these drawbacks and to obtain a joint construction method and a joint structure capable of performing a joining work of a steel frame beam by an extremely simple operation in a short time.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a connecting arm made of H-shaped steel and a dovetail projecting from the upper and lower flanges of a girder made of H-shaped steel connected to the connecting arm. Steel bar beam joint construction method in which the fixing plate fixed to the web is bolted after sliding the side plates with dovetail grooves on the tenon from the lateral direction, and the connecting arm and H-shaped H-shaped steel. Steel beam girder joints made by sliding dowel plates with dovetail grooves into dovetails protruding from the upper and lower flanges of steel girders, and bolting fixing plates fixed to the connecting arm and girder webs. It is a measure that consists of a structure.

[0006]

Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 is a connecting arm made of H-shaped steel for connecting beams which is attached to a pillar 2, and the right end portion of the connecting arm 1 is slightly inside the upper and lower flanges 3 and 3 to fill the width of the flange 3. Upper and lower dovetails 4 and 4 are provided in the width direction, and the mounting positions of the upper and lower flanges 3 and 3 are different. The right end of the web 5 of the connecting arm 1 is provided with a vertical cut 6 from a position half the height of the web 5, and a lower half portion in front thereof is a protrusion 7.

The left end of the girder 8 made of H-shaped steel connected to this is symmetrical with the connecting arm 1. That is, the upper and lower flanges 3 and 3 are provided with dovetails 4 and 4 in the same way as the connecting arm 1 with the upper and lower positions slightly different from each other on the inner side of the left end, and the web 5 corresponds to the notch 6 of the connecting arm 1. A vertical notch 6 is provided, and the upper left half is a protrusion 7.
A fixing plate 11 having bolt holes 10 for mounting bolts 9 on both sides of the webs 5 and 5 is fixed to the projections 7 and 7 in front of the cuts 6 and 6 in the web 5 of the connecting arm 1 and the girder 8. Has been done. Separately from these, the connecting arm 1 and the girder 8
Upper and lower attachment plates 13 and 13 provided with dovetail grooves 12 and 12 that fit into the dovetails 4 and 4 on both sides at the positions of the dovetails 4 and 4 when the ends of the are joined.

To connect the connecting arm 1 of the pillar 2 and the girder 8 to each other, the flange 3 of the connecting arm 1 and the flange 3 of the girder 8 are aligned horizontally and the webs 5 and 5 are aligned vertically. After bringing 8 closer by a crane or the like, the dovetail grooves 12 of the upper and lower attachment plates 13 and 13 are slid horizontally from the lateral direction into the dovetails 4 and 4 of the upper and lower flanges 3 and 3 to fix the upper and lower fixing plates 11. The bolts 9 are screwed into the bolt holes 10 of the connector 11 to keep the webs 5 and 5 of the connecting arm 1 and the girder 8 in a straight line so that the dovetail groove 12 of the attachment plate 13 does not come off from the dovetail 4 of the flange 3. It is fixed to.

[0009]

According to the invention of claim 1, most of the joining work of the steel beam is completed in a very short time, that is, the attachment plate is slid into the dovetail provided on the flange of the steel frame when constructing the steel frame. Since the fixing plate can be fixed with only a few bolts after that, the operation of joining work is extremely easy and therefore work can be performed even in the rain, and the work can be done in a short time. It is very effective in shortening the construction period. According to the invention of claim 2, the dovetail tenon is provided on the flange of the steel frame, and the attachment arm having the dovetail groove is slid into the dowel to provide a strong connection between the connecting arm and the girder, and the fixing plate holds the web. By fixing, a reliable joint structure can be obtained in which the attachment plate does not move.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is shown in FIG.
It is a front view which cut | disconnected one part in the II line of FIG.

2A is a plan view, and FIG. 2B is a sectional plan view taken along line II-II in FIG.

FIG. 3 is a front view showing a conventional example.

[Explanation of symbols]

 1 connecting arm 3 flange 4 dovetail 5 web 8 girder 9 bolt 11 fixing plate 12 dovetail groove 13 attachment plate

Claims (2)

[Claims] A connecting arm (1) made of H-shaped steel, and dovetails (4) projecting from the upper and lower flanges (3) of a girder (8) made of H-shaped steel connected to the connecting arm (1), respectively. Dovetail (1
After sliding the attachment plate (13) having 2) from the lateral direction,
Attach the fixing plate (11) fixed to the web (5) to the bolt (9).
Steel beam joint construction method so that it can be tightened. 2. A dovetail groove (12) is formed in a dovetail (4) projecting from upper and lower flanges (3) of a connecting arm (1) made of H-section steel and a girder (8) made of H-section steel. Sliding the attached plate (13) provided, each web (5) of the connecting arm (1) and girder (8).
A steel frame joint structure in which a fixing plate (11) fixed to a bolt is tightened with bolts (9).