钢-混凝土叠合梁自锚式悬索桥结构体系转换方案的比较研究  

Comparative Study on the Optimal System Transformation Scheme forSelf-anchored Suspension Bridge with Steel and Concrete Composite Girder

作　　者：王天鹏[1] 易锦[1] 陈立忠 WANG Tianpeng;YI Jin;CHEN Lizhong(School of Civil Engineering,Central South Hu＇nan 410004,China;Shaoyang Road and Bridge University of Forestry and Technology,Changsha,Construction Co.,Ltd.,Shaoyang,Hu＇nan 422000,China)

机构地区：[1]中南林业科技大学土木工程学院,湖南长沙410004 [2]邵阳公路桥梁建设有限责任公司,湖南邵阳422000

出　　处：《施工技术》2018年第18期50-53,共4页Construction Technology

基　　金：湖南省交通厅科技进步与创新项目(201527)

摘　　要：自锚式悬索桥的非线性受力行为主要集中在体系转换过程中,而且钢-混凝土叠合梁自锚式悬索桥桥面板的施工影响了结构体系转换时加劲梁的刚度,导致该类自锚式悬索桥体系转换过程中的受力非常复杂。以桂花大桥为工程背景,根据不同的吊索张拉顺序和桥面板施工顺序,制订了4种结构体系转换方案,并确定了桂花大桥的体系转换原则。通过有限元仿真计算,分析体系转换过程中吊索变形、加劲梁内力及主缆变形演变规律,给出了各方案的关键计算结果,通过比较选出最优方案。The nonlinear behavior of self-anchored suspension bridge is mainly during the process of system transformation. Moreover, the stiffness of the stiffening ribs is influenced by the bridge decks during the construction, which makes the force of self-anchored suspension bridge in the process of system transformation very complex. This paper proposes four system transformation schemes for the self-anchored suspension bridge. The detailed finite element model of a self-anchored suspension bridge is developed. The tension force in the suspenders, the internal forces in the stiffening ribs and the deformation of the main cable are analyzed. Based on the comparison results of different system transformation plans for self-anchored suspension bridge,the optimal scheme is chosen.

关 键 词：桥梁工程 悬索桥 钢-混凝土叠合梁 体系转换 有限元分析 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]