JPH0514967Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is a steel truss that serves as the frame of a steel structure or steel reinforced concrete structure, in which the flanges of the upper and lower chord members are used as part of the diagonal members. This is related to the structure that was created.

[Prior Art] Conventionally, H-beam steel has often been used for the upper and lower chord members of steel trusses, and in this case, the joints of the diagonal members between the upper and lower chord members are shown in Figures 3 and 4. As shown, a gusset plate 23 is welded 24 to the inner flange 22 of the upper chord member 21 and the lower chord member (not shown) in the longitudinal direction, and the angle steels 25, 25 are placed facing each other as diagonal members with the gusset plate 23 in between. A gusset plate 33 is welded 34 to the inner flanges 32 of the upper chord member 31 and the lower chord member (not shown) in the longitudinal direction, as shown in FIGS. 5 and 6. , into which a square steel pipe 36 or a round steel pipe 36a with a cut 35 as a diagonal member is inserted and welded 37,
Alternatively, as shown in FIGS. 7 and 8, the ends of H-beams 42 cut diagonally are welded 43 to the inside of the upper chord member 41 and the lower chord member (not shown) to serve as diagonal members. It is known that a gusset plate 45 is welded 46 to the intersection 44 of an H-shaped steel 42, and a rib plate 49 is welded 50 between the upper and lower flanges 47, 48 of the upper and lower chord members.

[Problems to be solved by the invention] The above-mentioned conventional steel truss is constructed by welding a gusset plate to the flange of the H-shaped steel, welding or bolting diagonal steel to the gusset plate, or welding or bolting the diagonal steel to the gusset plate. After directly welding the ends of the diagonal steel sections, weld a gusset plate to the intersection of the diagonal members and weld a rib plate to the flange of the intersection.In both cases, reinforcement materials such as gusset plates are used. This requires extra steel material in addition to the upper and lower chord members and diagonal members, and the work is dangerous and time-consuming because it is mainly secured by welding, and the truss components are There was a problem in that it could not be assembled quickly and easily without waste.

[Means for solving the problem] In order to solve the above problem, this invention
The inner flanges 3 and 4 of the upper chord member 1 and the lower chord member 2 made of shaped steel are made to face each other, and a part of both sides of the inner flanges 3 and 4 are separated leaving a base 6 to form connecting portions 7 and 8, Each of the connecting parts 7 and 8 is bent diagonally so that they are in a straight line, and a steel member 9 is brought into contact with each of the connecting parts 7 and 8, and bolts 10 are tightened to form a steel frame truss to form a diagonal member 5.

[Example] An example of this invention will be described based on the drawings.

Reference numeral 1 denotes an upper chord member made of H-shaped steel, and this and a lower chord member 2 made of H-shaped steel below it are parallel to each other with their inner flanges 3 and 4 facing each other. The inner flange 4 of the upper chord member 1 is separated from the base 6 of the connecting portions 7, 8, and a portion of each side thereof is cut off to form the connecting portions 7, 8. Next, the connecting portion 7 of the upper chord member 1
After bending the connecting part 8 of the lower chord member 2 diagonally so that they are in a straight line when viewed from the front, angle steel or T
A steel truss is assembled by abutting steel materials 9 such as shaped steel and tightening bolts to form diagonal members 5.

[Effects of the invention] This invention utilizes the flanges of the upper and lower chord members, and the connecting parts of the diagonal member and 12 are continuous at the base of the flange, so there is no need for reinforcing materials such as gusset plates, and the truss can be constructed. There is no waste because no extra materials are used for the component parts. Moreover, by cutting and bending a part of the flanges of the upper and lower chord members, there is no need for dangerous and time-consuming welding work when installing the diagonal members, and the connection between the upper and lower chord members is straight. Since they face each other along a line, the flanges and webs of the upper and lower chord members are separated and used as diagonal members.
Separate steel materials can be easily brought into contact with the inside of each joint, without the need for the troublesome work of abutting the connecting plates across the inner and outer surfaces of the diagonal members, which is required when these are connected to form a diagonal member. In addition, the steel truss can be assembled quickly and easily because it is only necessary to bolt the steel members directly to the connecting parts.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a front view, Figure 2 is a side view, Figures 3 to 8
The figures show a conventional example, with Figure 3 being a front view and Figure 4 being a front view.
The figure is a side view, Figure 5 is a front view, Figure 6 is a side view,
FIG. 7 is a front view, and FIG. 8 is a side view. 1... Upper chord member, 2... Lower chord member, 3... Flange, 4... Flange, 5... Diagonal member, 6... Base,
7... Connection part, 8... Connection part, 9... Steel material, 10
……bolt.

Claims (1)

[Scope of utility model registration request] The inner flanges 3 and 4 of the upper chord member 1 and the lower chord member 2 made of H-section steel are made to face each other, and parts of both sides of the inner flanges 3 and 4 are cut off leaving the base 6 to form connecting portions 7 and 8. The steel truss is made by bending the connecting parts 7 and 8 diagonally so that they are in a straight line, a steel material 9 is brought into contact with each connecting part 7 and 8, and tightening bolts 10 to form a diagonal member 5.