基于ANSYS的钢管混凝土拱桥收缩徐变分析  

Analysis of the Creep and Shinkage of Concrete in CFST Arch Bridge Based on ANSYS

作　　者：熊红霞[1] 刘志宏[2] 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070 [2]湖北省交通规划设计院,湖北武汉430051

出　　处：《桂林电子工业学院学报》2004年第5期55-58,共4页Journal of Guilin Institute of Electronic Technology

基　　金：湖北省自然科学基金项目 (2 0 0 3 ABA0 16)

摘　　要：In this paper,a general finite-element software is used to calculate the creep and shrinkage of concrete in CFST arch bridge. The bridge’s spatial model is founded. The cross-section stress redistribution of the arch ribs is researched. The analysis results show that the creep and shrinkage has a great influence upon the structure forces and the stress of any controlled cross-section. The cross-stress redistribution is very obvious. The creep and shrinkage of concrete has little influence upon the structure axial force,but has a great influence upon the bending moment,The forces and the stress of the steel tube have been increased but those of the concrete have been reduced because of the creep and shrinkage. The bending moment of the top of the arch has increased obviously. Engineers should be careful about this phenomenon.In this paper,a general finite-element software is used to calculate the creep and shrinkage of concrete in CFST arch bridge. The bridge's spatial model is founded. The cross-section stress redistribution of the arch ribs is researched. The analysis results show that the creep and shrinkage has a great influence upon the structure forces and the stress of any controlled cross-section. The cross-stress redistribution is very obvious. The creep and shrinkage of concrete has little influence upon the structure axial force,but has a great influence upon the bending moment,The forces and the stress of the steel tube have been increased but those of the concrete have been reduced because of the creep and shrinkage. The bending moment of the top of the arch has increased obviously. Engineers should be careful about this phenomenon.

关 键 词：钢管混凝土拱桥 收缩徐变 应力重分布 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]