Tube-in-tube bridge tower of space hybrid cable net suspension bridge with parabolic arched tower cap

Abstract

The invention provides a tube-in-tube bridge tower of a space hybrid cable net suspension bridge with a parabolic arched tower cap. The tube-in-tube bridge tower of the space hybrid cable net suspension bridge with the parabolic arched tower cap is characterized in that the parabolic arched tower cap with a rigid tie rod is arranged at the top of a tube-in-tube herringbone tower column; one end ofa giant diagonal bracing is anchored to the waist of the tube-in-tube herringbone tower column; the giant diagonal bracing supports the arch foot of the parabolic arched tower cap and forms a racket-like bridge tower structure; a load-bearing steel cable is placed on the tube-in-tube herringbone tower column, and a carbon fiber space cable net is anchored on the parabolic arched tower cap to enhance the spatial stiffness of the suspension bridge and realize the cooperation between two groups of cables; a concrete-filled rectangular steel tube corner column and a grille tubular double-steel concrete composite shear wall are adopted to form a tube structure; the tube-in-tube herringbone tower column comprises an outer tube structure, a core tube structure and multiple rigid diaphragms. Thetube-in-tube bridge tower of the space hybrid cable net suspension bridge with the parabolic arched tower cap has various advantages, such as strong structural rigidity, good wind resistance stability, rich facade modeling, strong earthquake resistance, and capability of being adopted as a bridge tower structure of a space cable net suspension bridge with a super-long span of 4000 meters.

Description

technical field [0001] The invention relates to the field of bridge engineering, and relates to a suspension bridge pylon structure of a super-long-span bridge, in particular to a tube-in-tube pylon structure of a space hybrid cable-net suspension bridge with a parabolic arched pylon cap. Background technique [0002] With the development of transportation, the span records of modern suspension bridges are constantly being refreshed. In the near future, humans will build 4,000-meter-class super-long-span suspension bridges across the Strait. [0003] With the increase of the span of the suspension bridge, the width-span ratio of the suspension bridge is continuously reduced, the structure of the suspension bridge is becoming softer and softer, the spatial stiffness of the super-long-span suspension bridge is continuously decreasing, and it is more sensitive to the wind, which leads to the continuous improvement of the wind-resistant stability of the super-long-span suspension...

AI Technical Summary

Problems solved by technology

[0005] The traditional suspension bridge pylon structure, equipped with two parallel steel wire cables on the left and right, can bear the vertical load of the suspension bridge with a span of 4000 meters. However, due to the poor lateral stiffness and torsional stiffness of the vertically parallel cable system, it cannot meet the requirements. Wind Stability Requirements for 4000m Class Super Long Span Strait Suspension Bridge

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