某斜拉桥的病害成因及加固研究  

The Cable-stayed Bridge Disease Test and Cause Analyses and Reinforcement Research

作　　者：张开银[1] 张军辉[1] 梁新宇[1] 向小斌[1] 

机构地区：[1]武汉理工大学交通学院

出　　处：《交通科技》2008年第4期25-28,共4页Transportation Science & Technology

摘　　要：以某斜拉桥为研究对象,针对该桥纵梁局部开裂的现象,通过索力测量,并用大型通用有限元计算软件对其进行模拟与分析,得出该桥在施工过程中对斜拉索张拉力的配置不合理,从而改变了原有结构的受力状态,引起桥梁的内力重分配,使桥梁的安全受到影响。通过采用碳纤维布加固技术使该桥恢复了原桥的交通功能。Regarding the cable-stayed bridge as the research task, according to the phenomenon of cracks in the longitudinal beam of the bridge, through measuring cable forces, the structure simulation analysis is made for the bridge by finite-element software, and the obtained tensional cable forces is unreasonable, thus the mechanical conditions of the original structure was changed, meanwhile it caused redistribution of internal force, which threatened the health of bridge. At the end, the paper used carbon fiber sheet reinforcement method, and the bridge met the requirement of bearing capacity.

关 键 词：斜拉桥 索力 有限元法 碳纤维布 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] TU746.3[交通运输工程—道路与铁道工程]