混凝土收缩徐变对斜拉桥受力性能的影响

The influence of concrete shrinkage and creep to cable-stayed bridge mechanical behavior

采用大型通用有限元分析软件SAP2000建立了一大跨斜拉桥的有限元模型,分析了混凝土的收缩徐变在斜拉桥施工过程中和成桥后对其主梁内力和变形、拉索拉力影响。研究结果表明,收缩徐变在成桥以后的影响不可忽略。

This paper established finite element model of a big cable-stayed bridge using large-scale general finite element analysis software SAP2000,analyzed its influence to internal girder force and deformation,rear cables of concrete shrinkage and creep in cable-stayed bridge construction process and after bridge.Research results showed that,the influence of shrinkage and creep could not ignored after bridge.