作　　者： ; ; ;

机构地区： 长安大学公路学院陕西省公路桥梁与隧道重点实验室

出　　处： 《世界桥梁》 2005年第4期44-47,共4页

摘　　要： 斜拉桥结构效应在施工过程中具有典型的时空变化特性,但目前对效应的时程特性及时空包络关注较少。建立精细的几何非线性分析模型,分析主跨1 088 m的苏通大桥施工过程力学行为,包括施工阶段效应增量、效应时程、效应包络及恒载效应。研究结果有助于结构设计和施工控制。 The structural response of a cable-stayed bridge being constructed is characteristic of typical time and space variations. However, little concern has been paid currently to the time history, time and space envelope of the response. In his paper, a refined geometric nonlinearity model is established to analyze the mechanical behavior of Sutong Bridge at construction stage, a cable-stayed bridge with a main span 1 088 m, in which the increment, time history, time and space envelope and dead load of the response are included. The results of the analysis and study herewith are helpful to the structural design and construction control of long-span cable-stayed bridges.

关 键 词： 斜拉桥 超大跨度 施工过程 效应时程 效应时空包络 几何非线性

领　　域： [建筑科学] [交通运输工程] [建筑科学]