单向坡斜拉桥体系转换分析与控制措施  

Analysis on Architectural Conversion of Unidirectional Slope Cable-Stayed Bridge and Its Control Measures

作　　者：王为圣[1] 何光锋 王新忠[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]新沂市建筑工程质量监督站,江苏新沂221400

出　　处：《徐州建筑职业技术学院学报》2006年第2期18-21,共4页Journal of XUZHOU Institute of Architectural Technology

摘　　要：利用ANSYS程序的APDL建立了彭溪河特大桥的平面有限元模型,分析单向坡在体系转换中对结构内力和位移的影响,认为单向纵坡斜拉桥内力分布呈非对称性,因此在体系转换时主梁易受到不平衡力的冲击.在此基础上,提出了减小单向纵坡对其体系转换影响的控制措施.With the plane finite-element analysis model established by APDL of ANSYS for the super major bridge on Pengxi river, this paper analyses the effects of unidirectional slope on the internal forces and displacements of the structure in architectural conversion. The authors hold that the internal forces of one-way longitudinal grade cable-stayed bridge assume asymmetry distribution, so that the main beam tends to experience the shock of unbalanced forces in architectural conversion. On this basis, put forth are control measures for weakening the effects of oneway longitudinal grade on its architectural conversion.

关 键 词：单向坡斜拉桥 体系转换 非对称 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]