Hollow sandwich steel pipe concrete pole for power transmission line

Abstract

The invention provides a hollow sandwich steel pipe concrete pole for a power transmission line. The hollow sandwich steep pipe concrete pole comprises a hollow sandwich steel pipe concrete member, a hollow steel pipe member, inside and outside wall flanges, a common flange and a lead cross arm; the hollow sandwich steel pipe concrete member consists of an external steel pipe, an internal steel pipe and intermediate sandwich concrete; subsections of the hollow sandwich steel pipe concrete member are connected through the inside and outside wall flanges; the hollow sandwich steel pipe concrete member is connected with the hollow steel pipe member through the common flange; the hollow sandwich steel pipe concrete member is fixedly arranged in a rebar concrete foundation; the inside and outside wall flanges consist of an internal flange and an external flange; and the lead cross arm is arranged on the hollow steel pipe member. Compared with the conventional power transmission tower, the floor area is reduced, and the selection of tower position is more flexible; compared with the common steel pole, the compression resistance, the bending resistance and the local stability bearing capacity of the member are greatly improved; the application range of the power transmission pole is enlarged, and the use quantity of steel material is saved; and compared with the steel pipe concrete pole, the dead load of the structure is reduced, the action force of the foundation is reduced, and the use quantity of the foundation concrete is saved.

Description

technical field [0001] The invention relates to a hollow interlayer concrete-filled steel pipe pole for a power transmission line, and belongs to the technical field of poles and towers for overhead power transmission lines. Background technique [0002] With the rapid development of urban construction, land resources are becoming more and more scarce. For 220kV and 500kV multi-circuit transmission lines on the same tower with higher voltage levels, due to the large area occupied by conventional pole towers, it will encounter great difficulties when passing through urban areas. difficulty. The steel pipe pole can solve the problem of urban land occupation very well. Because of its small area, it can be directly set up in the green belt of urban roads, which can largely avoid the policy caused by the line passing through densely populated buildings. Deal with disputes while saving the city's land resources. [0003] Conventional steel pipe poles are mostly used for single-c...

AI Technical Summary

Problems solved by technology

[0010] 1) The cross-section is developed and the bending rigidity is large;

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