| 基于空间梁格模型的异形斜拉桥体系转换施工模拟 |
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| 引用本文： | 孙远,徐栋.基于空间梁格模型的异形斜拉桥体系转换施工模拟[J].中国公路学报,2010(1). |
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| 作者姓名： | 孙远 徐栋 |
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| 作者单位： | 同济大学桥梁工程系; |
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| 摘 要： | 以某独斜塔双索面弯斜拉桥为例建立空间梁格模型,分析了该桥几何位置迁移、拉索垂度效应、支座脱空等主要非线性特征的影响程度,并提供了处理施工中临时支架脱空引起特殊非线性问题的程序迭代计算方法;在此基础上以主塔应力安全为主线,兼用传统正装分析的方法,综合考虑各种非线性以及徐变收缩等问题设计了整个体系转换的施工过程。实测结果表明:该梁格模型的建立以及对特殊非线性问题的处理方法为该桥的施工设计与监控提供了准确的数据,保证了体系转换施工的顺利完成,可供同类异形斜拉桥的施工模拟计算参考。
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| 关 键 词： | 桥梁工程 异形斜拉桥 空间梁格模型 特殊非线性 施工模拟 支座脱空 |
System Transformation Construction Simulation of Specially-shaped Cable-stayed Bridges Based on Space Girder Model |
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| SUN Yuan,XU Dong.System Transformation Construction Simulation of Specially-shaped Cable-stayed Bridges Based on Space Girder Model[J].China Journal of Highway and Transport,2010(1). |
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| Authors: | SUN Yuan XU Dong |
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| Institution: | SUN Yuan,XU Dong(Department of Bridge Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | Space girder program was adopted to build a model of a single inclined tower double cable plane cable-stayed bridge. In addition,the influencing degrees of main geometric nonlinearity,which is hollow on support,sag effect of cable and so on were taken into consideration,and the iterative calculation method of special nonlinear caused by hollow on support was presented. Combined the method,traditional forward-analysis method with problem of nonlinearity and shrinkage and creep,the total system transformation... |
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| Keywords: | bridge engineering specially-shaped cable-stayed bridge space girder model special nonlinearity construction simulation hollow on support |
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