摘要
砼时间效应对大跨拱桥结构性能有较大的影响,本文结合许沟大桥的工程实践,分析了砼徐变、收缩对主拱圈的内力与变形以及截面应力重分布的影响,讨论了砼收缩对主拱圈分层浇筑自应力的影响.分析结果可为今后同类桥梁的设计、施工提供指导.
The aging effect of concrete influences structural behavior of long-span arch. the effects of creep and shrinkage of concrete on inner force, deformation and stress redistribution of main arch, the effects of shrinkage of concrete on self-stress of concreting in lifts are discussed-for example, Xugou bridge. The results can be reference for other bridges.
出处
《重庆交通学院学报》
2005年第4期31-34,43,共5页
Journal of Chongqing Jiaotong University
关键词
大跨度钢筋砼拱桥
砼收缩、徐变
应力重分布
自应力
long-span RC arch
creep and shrinkage of concrete
stress redistribution
self-stress
