大跨度、大重量斜靠式系杆拱桥浮拖法施工技术研究

摘要

基于100 m 跨径云梨桥斜靠式钢箱系杆拱桥工程，介绍浮拖法施工技术在大跨度、大重量偏心斜靠式系杆拱桥施工中的应用，分析系杆拱桥整体浮拖中的关键工序和控制措施，针对云梨桥浮拖过程中的复杂性，应用空间有限元分析程序，进行了关键施工阶段的应力、变形分析，解决了浮拖过程中的稳定性问题。%Based on the project of leaning-type steel-box-tied arch Yunli Bridge with 100 m span,this paper introduces the construction technology of floating-hauling method in large-span and large-weight leaning-type eccentric tied arch bridge construction,then it analyzes the application of the key working procedure in tied arch bridge during overall floating-hauling construction and its control measures.For the complexity in floating-hauling construction of Yunli Bridge,space finite ele-ment analysis program is applied to analyze the stress and deformation in the key construction stage,and it solves the stabil-ity problem in the process of floating-hauling construction.