丫髻沙大桥施工过程的稳定分析  

Stability Analysis for Yajisha Arch Bridge during Construction

作　　者：颜全胜[1] 李朝文 徐升桥[3] 

机构地区：[1]华南理工大学交通学院,广州市510640 [2]广州市高速公路总公司,广州市510030 [3]铁道专业设计院,北京市100020

出　　处：《公路》2003年第10期65-68,共4页Highway

摘　　要：采用非线性稳定分析程序 ,考虑施工过程中结构体系不断变化、荷载的逐步增加等因素 ,计算了丫髻沙大桥灌注主拱肋混凝土施工过程中的稳定安全性 ,得出了各施工阶段稳定安全系数。分析比较了采用两种不同的钢管内混凝土施工工序对该大桥结构稳定安全的影响 ,计算结果为大桥施工提供了指导。The elastic-plastic stability of Yajisha Concrete-Filled Steel Tube Arch Bridge is investigated by utilizing a nonlinear program during construction. The effects, such as the variations of the structural system, cross section characteristic of arch ribs and the progressive increment of applied loads are taken into account during erection. The two proposed sequences of pouring concrete in the arch ribs are analyzed, and the influence of concrete-pouring process on the stability safety factors of the Yajisha arch bridge are evaluated. The numerical results are used to guide the concrete-pouring construction of Yajisha Arch Bridge.

关 键 词：丫髻沙大桥 钢管混凝土拱桥 施工 稳定分析 

分 类 号：U448.22[建筑科学—桥梁与隧道工程] U445.4[交通运输工程—道路与铁道工程]