位置:首页 >> 期刊文章
|
摘要:
|
重庆朝天门长江大桥中跨采用先拱后梁架设方法,先主拱合龙,再刚性系杆合龙。对主桥建立有限元数值模型,对合龙工况进行敏感性分析,制定最佳合龙调整方案,分析合龙时各个物理参量(包括应力、线形、索力),深入阐述无应力合龙原理。主拱和刚性系杆均实现无应力合龙,可对同类桥梁施工和控制提供借鉴。
|
In construction of Chaotianmen Yangtze River Bridge,the main arch was first erected and closured,then the Rigid Tied girders. By Finite element analysis,a sensitivity analysis of the closure conditions was accomplished,the best closure adjustment programs was developed,various physical parameters including stress,linear,cable force,and the detailed principle of non-stress-closure were analyzed. All main arches and rigid tied girders achieved non-stress-closure,it can give useful references to the construction and controlling of similar bridges.
|
基金项目:
|
|
作者简介:
|
|
参考文献:
|
[1]JTJ025-86,公路桥涵钢结构及木结构设计规范[S].
[2]超大跨径钢桁架拱桥施工控制技术研究报告[R].武汉:中交武汉港湾工程设计研究院有限公司,2008.
[3]中交第二航务工程局.朝天门大桥主桥上部施工方案[Z].2006.
[4]超大跨径钢桁架拱桥施工关键技术研究报告[R].中交二航局重庆朝天门大桥项目经理部,2008.
[5]孙海涛.大跨度钢桁架拱桥关键问题研究[D].同济大学,2006.
[6]重庆朝天门长江大桥主桥施工控制分析报告[R].重庆交通大学,2006.
|
服务与反馈:
|
【文章下载】【加入收藏】
|
|
|
|