Space twisting curved surface A type bridge cable tower and construction method thereof

Abstract

The invention discloses a space twisting curved surface A type bridge cable tower and a construction method thereof. The cable tower comprises a foundation, a bearing platform, a tower seat, tower columns, an inclined top tower crown and a lower transverse beam, wherein two tower columns are arranged; the two tower columns are inclined toward the inside and are symmetrically arranged to form two inclined edges of an A shape; the twisting directions of the two tower columns are different; a continuous twisting shape is formed from each tower column to the tower bottom and from each tower column to the tower top; the twisting angle, relative to the tower bottom, of the tower top is 90 degrees; the horizontal cross section of each tower column is a rhombus section and each rhombus edge of the rhombus section is a straight line; four edges of any one horizontal cross section of each tower column are straight lines before and after twisting; the surface of the periphery of each tower column is a curved surface composed of a plurality of space straight lines; the crossed line formed by crossing of the surface of the periphery of each tower column and any vertical plane is the straight line; the tower tops of the two tower columns are fused at the tower top to form a tower top fusion section; and the lower transverse beam is a transverse edge of the A shape and the whole body of the cable tower is A-shaped and is of a uniform straight-line twisted shape. The invention also discloses the construction method of the space twisting curved surface A type bridge cable tower.

Description

technical field [0001] The invention relates to a cable tower configuration and a construction method thereof, in particular to a space torsion surface A-shaped bridge cable tower and a construction method thereof. Background technique [0002] With the rapid development of highway construction in our country, more and more cable system bridges are presented to the public. Cable-stayed bridges and suspension bridges have the characteristics of large spanning capacity, and are the main bridge types for crossing rivers, rivers and valleys. Generally speaking, the main load-bearing components of a cable-stayed bridge include cable-stayed cables, cable towers, and main girders. And the main support structure of the suspension bridge, the stay cables of the cable-stayed bridge and the main cable of the suspension bridge are all fixed on the cable tower structure. The cable tower structure is not only the main load-bearing structure of the cable-stayed bridge and suspension bridg...

AI Technical Summary

Problems solved by technology

Although the structure is simple, the shape is single, the three-dimensional effect is not strong, and it lacks aesthetic and artistic characteristics

[0004] In the prior art, most of the cable towers of cable-stayed bridges and suspension bridges are made of reinforced concrete materials. Reinforced concrete cable towers are limited by the construction formwork, so it is difficult to make cable towers with novel shapes and unique appearances. Although the tower can realize the special shape of the cable tower, the application of the steel structure cable tower is greatly limited due to its high cost.

Long-span cable-stayed bridges and suspension bridges are highly sensitive to wind. Traditional rectangular cross-section towers lead to greater wind resistance. In order to meet the needs of wind resistance, the amount of structural materials must be increased.

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