深海通航限高区域临时悬索栈桥设计方案研究

Study on design scheme of temporary suspension trestle in restricted height area of deep sea navigation

以某深海通航区域新建大跨桥梁项目为依托,重点介绍了临时悬索栈桥的设计方案。作为大跨桥梁上部结构十分重要的施工平台,悬索栈桥的索形、受力变形以及静风稳定性能对主缆的架设、紧缆、索夹安装与吊索架设等施工工序产生影响,也会对大跨桥梁上部结构施工安全产生重大影响。着重从索形确定、索力计算及静风稳定性三方面考虑,设计了适用于深海通航限高区域的临时悬索栈桥,研究成果可为同类型项目建设提供参考。

Based on a new large-span bridge project in deep-sea navigation area,this paper mainly introduces the design scheme of temporary suspension trestle.As a very important construction platform of large-span bridge superstructure,the cable shape,stress deformation and static wind stability of suspension trestle have an impact on the main cable erection,cable tightening,cable clamp installation and sling erection.It will also have a significant impact on the construction safety of the superstructure of long-span bridges.A temporary suspension trestle suitable for the restricted height area of deep sea navigation is designed from three aspects of cable shape determination,cable force calculation and static wind stability in this paper,the research results can provide reference for similar projects.