文档介绍：钢管混凝土拱桥拱座结构受力分析 钢管混凝土拱桥结构及受力特点分析
摘要：为正确掌握拱座的应力分布，指导结构设计，本文以一座中承式钢管混凝土拱桥为研究对象，针对中承式拱桥的特点，在建立全桥Midas/Civil整体性分析的基础上，使用Midas/FEA对拱座进行局部受力分析。对比分析C20、C25、C30、C35和C40五组不一样标号混凝土拱座主应力分布的改变情况，分析结果表明，在进行结构设计过程中，重视局部受力分析并使之受力明确是必须的，能够确定经济适宜的混凝土等级。本文研究结果对同类桥梁及其它类型桥梁有一定的参考意义。
关键词：桥梁工程；中承式钢管混凝土拱桥；拱座；拱脚；主拉应力；主压应力
Abstract: in order to master the arch foot stress distribution accurately, guiding the structural design, taking a Semi-Supported CFST arch as the research object, according to the characteristics of the arch bridge, based on the full-bridge Midas / Civil integrity analysis, using the Midas/ FEA analyzed the local stress of the skewback. Compared with the change of stress distribution of five groups of C20, C25, C30, C35 and C40 grade concrete arch-foot, the result showed that, during the structural design process, focusing on the local stress analysis and made it clearly was necessary, could determine the economic grade of concrete. The results of this paper have some reference significances to the similar and other types of bridges.
Key words: bridge engineering; Semi-Supported CFST arch bridge; skewback; arch-foot; principal tensile stress; principal compressive stress
中图分类号： K928文件标识码： 文章编号：
引言
拱脚是拱桥结构的关键部位之一，是结构设计中须关键考虑的细部结构，因为拱脚处的结构结构及受力很复杂，对拱脚进行局部应力分析，了解拱脚处空间局部应力的分布规律和大小，以指导设计，使得拱脚的设计合理可靠，对拱脚的局部应力分析含有主要的现实意义。因为很多工程结构的破坏经常是从局部开始的，部分钢管混凝土拱桥的拱脚及拱座处陆续出现