Rhombic section branching single column type cable tower for cable-stayed bridge

Abstract

The invention provides a rhombic section branching single column type cable tower for a cable-stayed bridge and relates to the technical field of civil engineering. The rhombic section branching single column type cable tower comprises an upper tower column, a branched middle tower column, a branched lower tower column, a lower beam and a tower bottom beam. The top surface of the upper tower column is rhombic, the section of the upper tower column is in a rhombic shape with a chamfer, and the sectional dimensions vary continuously. The upper tower column forms eight outer side faces in total, the eight outer side faces are provided with a fixed gradient, the branched middle tower column and the branched lower tower column are of a hollow structure, the lower beam is arranged corresponding to a bridge floor main beam, and the tower bottom beam is arranged in the range of ship collision. The rhombic section branching single column type cable tower structurally has the advantages of impact resistance, wind resistance and vibration resistance; a bow-shaped tower wall of the upper tower column shows the working characteristics of an arched structure, fundamentally changes a stress mode of the cable tower and greatly improves safety and durability of the tower column; the branched middle tower column and the branched lower tower column further improve transparent performance of the single column type cable tower, and the structural conditions for bridge maintenance, emergency and broadening are created.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a split-limb single-column cable tower of a cable-stayed bridge with a rhombic cross-section. Background technique [0002] When the main span of a cable-stayed bridge exceeds 700m and the steel structure main girder has obvious technical and economic advantages, it can be classified as a super-long-span cable-stayed bridge. At present, the technology of super-long-span cable-stayed bridges shows a trend of accelerated development, but overall, the development trend of spans is more obvious, and the development of supporting technologies is relatively lagging behind. Among the three major structures of tower, beam, and cable, the structure type of the cable tower that controls the function, system, and shape is relatively monotonous. The feature adapted to the overall beam setup has always been dominant. [0003] At the same time, there are still the following problem...

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Problems solved by technology

[0005] Aiming at the above-mentioned domestic and foreign super-long-span cable-stayed bridges with lagging support technology development, monotonous type of double-leg cable tower, enlarged materials and poor landscape, and vague technical advantages of single-column cable-stayed bridges, the present invention provides a cable-stayed cable-stayed bridge. Split-leg single-column cable tower with diamond-shaped cross-section

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