JPH0514966Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a structure in which a part of the upper chord member and the lower chord member are used as diagonal members in a steel truss that forms the frame of a structure of steel frame structure or steel reinforced concrete structure. It is.

[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 steel diagonal members to the diagonal members, a gusset plate is welded to the intersection of the diagonal members, and a rib plate is welded to the flange of the intersection.In both cases, reinforcing materials such as gusset plates 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 as it is mainly secured by welding, and the work is dangerous and requires a lot of time to remove the truss components. 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 diagonal member is formed by leaving a base 6 on each inner flange 3 and 4 and incorporating a part of the web 7 on both sides. The diagonal members 10 and 11 are cut by approximately 1/2 of the length of the diagonal members 10 and 11, and the diagonal members 10 and 11 are bent diagonally so that they are in a straight line.
The steel truss is tightened to form diagonal members 5.

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

The upper chord 1 is made of H-shaped steel, and the lower chord 2 below it is made of H-shaped steel, and the inner flanges 3, 4 of the upper chord 1 and the inner flange 4 of the lower chord 2 face each other and are parallel to each other. The inner flange 3 of the upper chord 1 and the inner flange 4 of the lower chord 2 are connected to each other by webs 7 on both sides, leaving only a base 6.
With a portion of the diagonal member 10 taken in, it is cut off by approximately half the length of the diagonal member, forming diagonal member components 10, 11 consisting of flanges 9 with webs 8. The diagonal member components 10 of the upper chord 1 and the diagonal member components 11 of the lower chord 2 are bent diagonally so as to be in a straight line when viewed from the front, and then the web 8 is sandwiched between the web 8 side surface of the flange 9 of the diagonal member components 10 of the upper chord 1 and the web 8 side surface of the flange 9 of the diagonal member components 11 of the lower chord 2, and connecting plates 12 are abutted on both sides of the web 8,
Bolt holes are drilled in the beam 9 and the connecting plate 12, and these are fastened with bolts 13 to form the diagonal members 5, thereby assembling the steel truss.

[Effects of the invention] This invention utilizes the flanges and webs of the upper and lower chord members to create a T-shaped flange with a web.
Since the diagonal members are made up of the upper and lower diagonal members made of shaped steel, the diagonal members are sufficiently strong and are continuous with the flanges and webs of the upper and lower chord members, making it easy to reinforce gusset plates, etc. There is no need for any materials, just the diagonal connecting plates, and no extra materials are used for the truss components, so there is no waste. Furthermore, by cutting and bending a portion 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 diagonal members can simply be tightened with bolts to connect the diagonal members. Steel trusses can be assembled quickly and easily.

[Brief explanation of drawings]

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... Web, 10... Diagonal component member, 11... Diagonal member component, 12... Connecting plate, 13... 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-beam steel are placed opposite each other, and a portion of the web 7 is taken in on both sides, leaving the base 6 on each inner flange 3 and 4. Approximately 1/2 length of the diagonal member 5 is cut off to form diagonal member members 10 and 11, and each diagonal member member 10 and 11 is bent diagonally so that they are in a straight line, and these and the connecting plate 12 are connected. A steel truss with 13 bolts tightened and diagonal members 5.