基于无应力状态控制法的组合梁斜拉桥施工过程静力分析  

Static Analysis of Composite Beam Cable-stayed Bridge Construction Process Based on Unstressed State Control Method

作　　者：王晶 傅亚军 Wang Jing;Fu Yajun(School of Civil Engineering,Changsha University of Science&Technology Changsha 410114,China)

机构地区：[1]长沙理工大学土木工程学院,长沙410114

出　　处：《广东土木与建筑》2020年第10期44-47,共4页Guangdong Architecture Civil Engineering

摘　　要：随着施工的进行,斜拉桥的结构体系与荷载都会发生变化。对组合梁斜拉桥在施工过程中的受力变化情况进行研究,以赤壁长江公路大桥为工程背景,使用有限元软件BDCMS进行了全施工过程中的数值模拟,主要分析施工过程中钢梁、混凝土板、塔及索的受力变化情况。结果表明:组合梁斜拉桥在施工过程中需时刻注意混凝土板上缘的应力情况,尽可能减少不必要的施工临时荷载。As the construction progresses,the structural system and load of the cable-stayed bridge will change.The force changes of the composite beam cable-stayed bridge during the construction process are studied.With the Chibi Yangtze River Highway Bridge as the engineering background,the finite element software BDCMS is used to carry out the numerical simulation of the whole construction process,mainly analyzing the steel beam.The force changes of concrete slabs,towers and cables.The results show that the composite beam cablestayed bridge should always pay attention to the stress on the upper edge of the concrete slab during the construction process,so as to reduce unnecessary temporary construction loads as much as possible.

关 键 词：组合梁斜拉桥 合理施工状态 有限元 静力分析 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]