钢管混凝土拱桥拱肋注浆施工稳定分析  

Stability Analysis of Arch Rib Grouting Construction of Concrete Filled Steel Tube Arch Bridge

作　　者：贺峰 方晔飞 He Feng;Fang Yefei(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9期60-62,共3页Guangdong Architecture Civil Engineering

摘　　要：随着钢管混凝土组合材料的快速发展,很快便在拱桥中应用;对于大跨度钢管混凝土拱桥,且宽跨比较小的情况下,失稳破坏是结构破坏的形式之一。拱肋注浆施工是整个施工控制的重点控制事项,通过4种不同的灌注顺序,利用桥梁有限元空间分析软件进行空间模拟;详细地模拟了4种灌注方案施工过程,以及对灌注过程进行了线性屈曲分析和非线性屈曲分析,进而得出最优灌注方案。通过对某特大桥拱肋注浆施工稳定性的分析,可为今后同类型桥梁提供借鉴。With the rapid development of concrete-filled steel tube composite materials,it will soon be used in arch bridges;for largespan concrete-filled steel tube arch bridges with relatively small spans,instability failure is one of the forms of structural failure.The arch rib grouting construction is the key control item of the whole construction control.Through four different pouring sequences,the space simulation is carried out by using the bridge finite element space analysis software;the construction process of the four grouting schemes is simulated in detail,and the linear buckling analysis and nonlinear buckling analysis of the grouting process are carried out,and the optimal grouting scheme is obtained.The stability analysis of arch rib grouting construction of a super large bridge can provide reference for similar bridges in the future.

关 键 词：钢管混凝土拱桥 稳定性 特征值屈曲分析 非线性屈曲分析 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]