有索区挂篮前移顺序对矮塔斜拉桥施工影响分析  

Analysis of how the changing order of a cable hanging basket moving forword impact on a extradosed cable-stayed bridge's construction

作　　者：张巍[1] 胡成[1] 郑报文[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009

出　　处：《安徽建筑工业学院学报（自然科学版）》2012年第3期30-32,37,共4页Journal of Anhui Institute of Architecture(Natural Science)

摘　　要：矮塔斜拉桥是介于普通斜拉桥和连续梁桥之间的一种桥型,具有二者的双重特性,同时它属于多次超静定结构,受力复杂。本文结合秋浦河大桥,针对有索区挂篮前移顺序的改变建立了有限元模型,分析了调整前后分别按这两种施工工序进行正装计算时,二者在施工阶段挠度、拉索索力、主梁相关截面应力之间的差别。The extradosed cable-stayed bridge is one type of bridge between cable--stayed bridge and continuous beam bridge, it has dual features of both. Meanwhile,it is a multiple statically indeterminate structure and has a complex stress condition. Combining with the Qiupuhe bridge, this paper established the finite element model which contraposed the changing order of a cable hanging basket moving forword. It analyzed the differences of deflection cable tension and relevant section of girder stress s in construction stage before and after the adjustment when calculating according to the two construction process respectively.

关 键 词：矮塔斜拉桥 挂篮 挠度 索力 应力 

分 类 号：U445[建筑科学—桥梁与隧道工程]