摘要
当斜拉桥主梁采用砼板和钢梁组合梁时,砼板的收缩徐变受钢梁约束而产生截面上钢和砼间的应力重分布。同时,砼板和索塔的收缩徐变在高次超静定结构的斜拉桥中还将产生内力重分布。本文以某大桥为例,进行了理论分析和大量计算,为具体设计提供依据。
When the girder of cable-stayed bridge is composited by steel girder and concrete plate, the creep and shrinkage of concrete plate will be restricted by steel girder. The stresses in concrete plate and steel girder will be re-distributed. In the same time, the creep and shrinkage in concrete plate and pylon will cause the re-distribution of section forces in the bridge. In this paper, a theoretic analysis of creep and shrinkage in composite girder, and some practical examples are provided.
出处
《北京建筑工程学院学报》
1991年第1期37-46,共10页
Journal of Beijing Institute of Civil Engineering and Architecture
关键词
斜拉桥
组合梁
收缩
徐变
桥梁
cable-stayed bridge, composite girder, shrinkage, creep
