JPH05311805A - Built-up truss beam - Google Patents

Abstract

PURPOSE:To improve the workability of built-up connection by interposing a connecting chord member made of steel pipe between plurality of truss units formed of a chord members made of steel pipe connected through a diagonal member, piercing a PC steel wire through its inside, and giving tensile force to the PC steel wire for assembling the above components. CONSTITUTION:In the case of connecting plurality of truss units 1a, 1b, 1c formed of an upper chord member 2a and a lower chord member 3a which are made of steel pipe and connected by a diagonal member 4, a connecting chord member 5 made of steel pipe is interposed among the units, and a PC steel wire 8 is interposed into its inside, and tensile force is given to the PC steel wire 8 to fasten the units. Various structural truss beams are formed by changing the structure and number of the unit, and the length, number and assembly of connecting chord members 5. Thus the workability of a built-up truss beam can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eaves or temporary scaffolding attached to various buildings, and further to an assembled truss beam applied to construction of a steel frame beam, a truss type framework of a roof, or the like.

[0002]

2. Description of the Related Art A truss beam is composed of a long upper chord member and a lower chord member, and a large number of diagonal members connected by bolts and welding between the upper and lower chord members via a gusset plate. Is constructed into a frame that effectively functions as a tensile material or a compression material against external force, and is used as a frame of a truss type structure in factory buildings, hall buildings, etc. It is widely applied to the construction of scaffolds, etc., and since the frame requires a lot of labor and time, it is assembled and constructed in advance in a long large structure in a factory or the like.

[0003]

Since the above-mentioned conventional truss beam is preassembled into a long large structure in a factory or the like as described above, its transportation and construction are troublesome work, and its structure, It is difficult to change and adjust the length, etc., and there are problems in its transportation, workability, and versatility.

The present invention was developed in order to solve the above-mentioned problems, and the object thereof is to divide it into a plurality of truss units and connecting chords and use a PC steel wire. It is an object of the present invention to provide an assembled truss beam that can be easily assembled, facilitates transportation, enhances workability and versatility, and enables significant labor saving.

[0005]

SUMMARY OF THE INVENTION The present invention provides a plurality of truss units formed by integrally connecting a plurality of diagonal members between a pair of upper and lower chord members made of steel pipe. A plurality of steel pipe connecting chords assembled in series between the truss unit chords and a PC steel wire for tightening and assembling which is inserted through the chord and the connecting chords in the upper and lower series. This facilitates transportation and construction, and enables adjustment of changes in structure, length, etc.

[0006]

[Operation] A plurality of truss units formed by division,
Consists of connecting chords and PC steel wire, etc., which are easily transported, and a pair of steel pipe chords above and below a plurality of truss units and a plurality of steel pipe connecting chords PC
The steel wire is inserted into the upper and lower series and combined, one end side of each PC steel wire is attached to the building, etc., and the other end side of each PC steel wire is hung by the crane etc. and sent in. After assembling each chord and each chord for the upper and lower series,
A tension force is applied to each PC steel wire, and the PC steel wire is tightened with fixing metal fittings provided on the other end side and one end side of each PC steel wire to be easily assembled to a steel frame truss beam. By changing the selection of the number, the steel truss beam with the desired shape and length can be freely adjusted and constructed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are shown in FIGS. 1 to 4, and in the assembled truss beam 10 shown in FIG. 1, 1a, b and c are truss units formed by being divided into various truss mechanism units, 5 is a steel pipe connecting chord member, 8 is a PC steel wire, 9 is a fixing metal fitting, and the truss unit 1a is between the upper and lower pair of steel pipe chord members 2a and 3a. The three truss members 4 are integrally connected by welding or the like, and the truss unit 1b is formed by welding the steel pipe chord member 3b and the two slant members 4 disposed above or below. The truss unit 1c is integrally formed by connecting the three diagonal members 4 by welding or the like between the steel pipe chord members 2c and 3c arranged in a pair. The chord members 2a, c, 3a, b, c and the connecting chord members 5 are formed by different truss mechanism units. The section, the flange portion 6 as shown in FIG. 1B as needed, provided with a fitting mechanism comprising a short tubular portion 7 and the like of smaller diameter assembly, connection performance is enhanced.

The PC steel wire 8 has flexibility and excellent strength and toughness. As shown in the drawing, the chord members 2a, 2c and the chord members 5 for connection, and the chord members 3a, 3b, Above c,
Inserted in each series below. Further, the fixing metal member 9 is composed of a conventionally well-known appropriate mechanism that can be easily attached / detached to / from a desired position of the PC steel wire 8, and includes a plurality of truss units 1a, 1b, and c and a plurality of connecting chord members 5. This is an assembled truss beam 10 which is assembled by tightening and assembling by PC steel wires 8 with a fixing metal fitting 9 of a book.

In the assembled truss beam 10, for example, as shown in FIG. 2, one end of the PC steel wires 8 and 8 is inserted through the outer wall or the beam of the building 20, and the other end of the PC steel wire 8 is inserted by the crane 11. By suspending the parts and tensioning one end of the PC steel wire in the direction of the arrow by an appropriate means (not shown), each truss unit 1a, b,
c and the chord members 5 for connection are sequentially fed into a series assembled arrangement, and the chord members 2c of the truss unit 1c are fixed by the fixing metal fittings 9 fixed to the other ends of the PC steel wires 8 and 8. The outer ends of 3c are pressed and fixed, and as shown in FIG. 3A, fixing metal fittings 9 are fixed to one ends of the PC steel wires 8 and 8 by an appropriate means, and tightened and assembled to the cantilever truss beam 10. .. Further, as shown in FIG. 3B, the cantilever truss beam 1
A plurality of 0s are arranged at intervals, the connecting members 12 and the diagonal members 13 are connected between them, the roof 14 is arranged, and eaves are constructed on the outer wall of the building 20.

In addition, as shown in FIG.
Meanwhile, the steel truss beam 10a can be easily assembled and constructed by the above-mentioned means, and is constructed as a temporary scaffold or the like. 1
Reference numeral 5 is a bracket for mounting the steel truss beam 10a on the building 20. Further, the chord members 2a, c, 3a, b, c of each truss unit and the ends of the connecting chord member 5 are welded to be integrally connected to each other to have a structure similar to that of the main steel truss beam. You can also As shown in FIG. 1, the assembled truss beam 10 includes three types of truss units 1a having different structures,
Further, truss units having different structures other than those shown in the drawings can be appropriately selected and used. By selecting the structure and the number of the truss units and changing and adjusting the number of the connecting chord members 5, various structures can be obtained. Can be freely installed on steel truss beams of length.

[0011]

The present invention is constructed as described above and comprises a plurality of divided truss units, connecting chords, PC steel wires, etc., and is easily transported. , Upper and lower truss units, a pair of lower steel pipe chords and multiple steel pipe connecting chords, two PC steel wires above,
Inserted into each series below, combined, attached one end side of each PC steel wire to a building etc. and tensioned, suspended the other end side of each PC steel wire with a crane etc. and fed in, each truss unit and each connection Assembling the chord material in series, tightening with the fixing metal fittings fixed to the other end and one end of each PC steel wire,
By selecting and changing the structure and number of truss units and connecting chords, it can be freely adjusted and constructed for steel truss beams of the desired shape and length, and can be easily removed or diverted when used as transport or temporary construction. The workability and versatility are improved, and labor is greatly saved.

[Brief description of drawings]

FIG. 1 is a side view mechanism diagram (A) showing an embodiment of the present invention and an enlarged view of its main part (B).

FIG. 2 is a side view mechanism diagram showing a construction process of a cantilever truss beam.

FIG. 3 is a side view mechanism diagram (A) of the constructed cantilever truss beam and a plan view mechanism diagram (B) of the eaves construction.

FIG. 4 is a side view mechanism diagram showing a construction state of a steel truss beam applied to a temporary scaffold or the like.

[Explanation of symbols]

 1a, b, c truss unit 2a, c chord member 3a, b, c chord member 4 diagonal member 5 connecting chord member 8 PC steel wire 9 fixing metal fitting 10 assembled truss beam

Claims (1)

[Claims] 1. A plurality of truss units formed by integrally connecting a plurality of diagonal members between steel pipe chord members arranged in a pair of upper and lower parts, and the chord members of the truss unit. A plurality of steel pipe connecting chords to be assembled in series between them, and a PC steel wire for tightening and assembling which is inserted through the chord and the connecting chord in upper and lower series. Assembled truss beam.