800 m级无塔单叶双曲面空间悬索网人行悬索桥设计

Design of 800 m Univalent Hyperboloid Space Suspension Net Pedestrian Suspension Bridge without Tower

由于山峰景区旅游业的发展,需建造山峰景区800 m级超大跨径人行悬索桥,其面临抗风稳定性差和施工困难两大技术难题。文中提出一种山坡锚固式单叶双曲面空间悬索网人行悬索桥方案,单叶双曲面筒网状空间缆索分散锚固于两侧山坡之上,成品缆索分散施工,取消桥塔结构。研究表明,单叶双曲面筒网状空间缆索体系提供水平分力,可大幅度提高人行悬索桥的抗侧刚度和抗扭刚度,具有良好的抗风稳定性,且节约造价。

In the era of great development of tourism in mountain scenic spot,it is necessary to build 800 m super long-span pedestrian suspension bridge in mountain scenic spot,and the construction of super long-span pedestrian glass suspension bridge is faced with two technical problems:poor wind stability and difficult construction.A hillside-anchored univalent hyperboloid spatial suspension network pedestrian suspension bridge is proposed.The univalent hyperboloid tube-network space cables are dispersed and anchored on the both sides of the hillside.The finished cables are dispersed for construction,and the bridge tower structure is cancelled.The research shows that the univalent hyperboloid tube-network space cable system provides horizontal component force,which can greatly improve the lateral stiffness and torsional stiffness of pedestrian suspension bridge,and has good wind stability and save cost.