体系转换法加固悬索桥的结构分析及应用  

Structural Analysis and Application of Suspension Bridge Strengthened by System Transformation Method

作　　者：叶毅[1] 张哲[1] 潘盛山[1] 苗峰[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116023

出　　处：《世界桥梁》2009年第4期62-65,共4页World Bridges

基　　金：国家交通部西部建设基金(200631882350)

摘　　要：提出一种通过将悬索体系转换为斜拉-悬吊体系加固现有钢筋混凝土悬索桥的方法,并以一座典型桥梁为例,对采用该方法加固前后的结构特点和力学性能进行分析,结果表明这种加固方法使加固后主梁承载能力明显提高,原桥已有结构得到了充分利用并且满足各项受力要求。A method for strengthening the existing reinforced concrete suspension bridge by changing the suspension system of the bridge into the cable-stayed suspension system is put forward. By way of example of a typical bridge, the structural characteristics and mechanical performance of the bridge before and after it is strengthened by the method are analyzed. The results of the analysis show that the method as presented can significantly improve the carrying capacity of the main girder of the bridge after it is strengthened, the structure of the original bridge can be fully utilized and can meet all kinds of mechanical requirements.

关 键 词：悬索桥 体系转换 斜拉-悬吊体系 承载能力 加固 方案优化 

分 类 号：U448.25[建筑科学—桥梁与隧道工程] U445.72[交通运输工程—道路与铁道工程]