Assembled steel girder and power-transmission steel pipe pole structure assembly provided with same

Abstract

The invention relates to an assembled steel girder and a power-transmission steel pipe pole structure assembly provided with the same. The assembled steel girder comprises a steel girder body, wherein an accommodating space with an upward opening is formed in the middle part of the girder body, bolt holes are formed in the circumference of the opening, and the steel girder body is formed by frame bodies connected by bolts; each frame body is a frame defined by welding steel plates, transverse plates are arranged in each frame body, each frame body is divided into a plurality of layers by the transverse plates, reinforcing plates which are arranged crisscross are vertically arranged between the transverse plates in each layer, and the reinforcing plates and the transverse plate are combined to form an independent cavity. The assembled steel girder and the power-transmission steel pipe pole structure assembly disclosed by the invention have the advantages of being detached and repeatedly used, saving the working hour, improving the working efficiency and greatly reducing the cost.

Description

technical field [0001] The invention relates to a power transmission steel pipe steel girder and a power transmission steel pipe assembly, in particular to an assembled steel girder and a power transmission steel pipe pole structure assembly with the assembled steel girder. Background technique [0002] As the main component of the transmission line, the transmission steel pipe pole bears all the loads of the entire transmission line conductor, fittings and ancillary facilities. The high-voltage transmission steel pipe pole has the following characteristics: 1. The single-phase conductor of the high-voltage line has a large number of splits, the cross-section of a single conductor is large, the distance between the phases is large, and the hanging point of the conductor is high. The steel pipe pole bears a large load; 2. The transmission distance of the high-voltage line is long. In the whole line, there are large regional differences, complex and diverse topographical condi...

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Problems solved by technology

The 750t-level transfer steel beam is 6000mm long, 800mm wide, 1200mm high, and has an uplift resistance of 750t. After the combination, a steel pipe rod test with a maximum bending moment of 20,000kN m can be carried out. The height of the steel pipe rod to be tested cannot exceed 70m; 4000mm, width 800mm, height 1000mm, pull-out resistance 400t, after the combination, the steel pipe rod test with a maximum bending moment of 8000kN m can be carried out, and only small bending moment steel pipe rod tests can be carried out. When using the above two sets of converted steel beams, it is necessary Process special transitional steel beams according to the steel pipe rods to be tested, and the steel beams are single-bar single, which cannot be reused, the investment is large, and the bending resistance is fixed and unchangeable, which has great limitations

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