营口辽河公路大桥稳定性能研究  

Research on Stability of Liaohe River Highway Bridge in Yingkou

作　　者：罗涛[1,2] 

机构地区：[1]长安大学,陕西西安710064 [2]中国公路工程咨询集团有限公司北京华宏公司,北京101113

出　　处：《公路交通科技》2009年第3期105-110,共6页Journal of Highway and Transportation Research and Development

摘　　要：以营口辽河公路大桥为背景,研究斜拉桥施工阶段及成桥状态的稳定性能。对成桥状态、最大双悬臂状态、最大单悬臂状态(考虑配重)、最大单悬臂状态(不考虑配重)的全飘体系、半飘体系稳定特征值及主塔施工状态全飘体系稳定特征值分别进行了研究。采用空间杆系模型、ANSYS程序进行特征值屈曲计算。得出了成桥状态全飘体系、半飘体系的稳定系数分别为3.23、17.6;最大双悬臂状态全飘体系、半飘体系的稳定系数分别为4.45、8.04;最大单悬臂状态全飘体系、半飘体系的稳定系数分别为2.76(不考虑配重时3.11)、13.19(不考虑配重时16.27);主塔稳定系数为11.42。Based on Liaohe River Highway Bridge in Yingkou, the stability of the construction stage and the com- plete stage of cable-stayed bridge were discussed. The stable eigenvalues at the completion state, the maximum double cantilever state, the maximum single cantilever state with/without consideration of the bobweight in the full floating system and half floating system, and the stable eigenvalue at the construction state of the main tower in the full - floating system were analyzed. Using the model of the space truss system and the large-scale structural analysis program ANSYS, the eigenvalues of the abovementioned states were buckling calculated. The stable coefficients of the completion state in the full floating system and half floating system are 3.23 and 17.6 respectively, the stable coefficients of the maximum double cantilever state in the full floating system and half floating system are 4.45 and 8.04 respectively, the stable coefficients of the maximum single cantilever state with/without consideration of the bobweight in the full floating system and half floating system are 2.76/3.11 and 13.19/16.27 respectively, and the stable coefficient of the main tower is 11.42.

关 键 词：桥梁工程 斜拉桥 ANSYS 稳定性能 特征值分析 屈曲计算 

分 类 号：U416[交通运输工程—道路与铁道工程]