自锚式悬索桥全桥模型试验结构设计与理论分析  

Structural Design and Theory Analysis on Total Bridge Model Test of Self-anchored Suspension Bridge

作　　者：牛登辉 周志祥[2] 

机构地区：[1]天津市市政工程设计研究院,天津市300051 [2]重庆交通大学,重庆市400074

出　　处：《城市道桥与防洪》2014年第10期44-46,7-8,共3页Urban Roads Bridges & Flood Control

基　　金：交通运输行业联合科技攻关项目(2010-353-341-230)

摘　　要：桃花峪黄河大桥是世界上跨度最大的自锚式悬索桥,主跨为406 m。利用全桥模型试验的有限元仿真分析研究其体系转换过程,重点介绍了该桥的试验模型在结构设计、体系转换过程及有限元仿真分析方面的一些有益结果。自锚式悬索桥在计算其加劲梁无应力长度时,需要计入加劲梁的压缩变形值;在体系转换过程中,当各构件的无应力参数唯一确定后,结构的成桥状态与吊索张拉顺序无关,因此各种体系转换过程都能实现目标状态;采用无应力长度控制法计算吊索张拉力简单易行,可适用于设计和优化吊索的张拉过程。Taohuayu Yellow River Bridge is the largest-span self-anchored suspension bridge on the world.Its main span is 406 m long. The finite element simulation of total bridge model test is used to analyze and study the system transition process. The article focuses introduction on some benefit results of this bridge test model in the structural design, system transition process and finite element simulation analysis. The unstressed length of stiffening girders of self-anchored suspension bridge must include the compression deformation of stiffening girders. In the system transition process, the completed bridge state of structure is unrelated with the order of cable tensioning when the unstressed parameter of each component is determined.Therefore, the target state can be realized for all system transition processes. It is easy and simple to use the unstressed length control method to calculate the tensile force of cable, which can be suitable for design and optimization of cable tensioning process.

关 键 词：自锚式悬索桥 全桥模型试验 无应力长度 结构体系转换 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]