摘要
以某独塔斜拉桥为研究对象,利用有限元软件midas Civil建立了该桥的数值仿真模型,并对独塔、边跨合龙、成桥3个工况的第一类和第二类稳定进行了分析。结果表明,该桥第一类和第二类稳定系数均符合规范要求,且第二类稳定系数较第一类稳定系数均有不同程度的折减,边跨合龙第一类稳定系数为130,第二类稳定系数为122,成桥第一类稳定系数为30.03,第二类稳定系数为21.2,独塔第一类稳定系数为6.178,第二类稳定系数为5.35。
Taking a single tower cable-stayed bridge as the engineering background,the finite element analysis software Midas Civil was used to establish the numerical simulation model of the bridge,and the stability problems of the first type and the second type of the single tower,side span closure and accomplished bridge were analyzed.The results show that the stability coefficients of the first type and the second type of the bridge are in accordance with the design standards,and the stability coefficient of the second type has different degrees of reduction compared with the stability coefficient of the first type.The first type stability coefficient of side span closure,accomplished bridge and the single tower under the action of large cable force is 130,30.03 and 6.178 respectively.The second type stability coefficient of side span closure,accomplished bridge and the pylon is 122,21.2 and 5.35 respectively.
作者
颜鹏飞
严松
YAN Pengfei;YAN Song(CCCC Second Highway Consultant Co. Ltd,Wuhan 430052,China)
出处
《交通科技》
2019年第1期39-42,共4页
Transportation Science & Technology
关键词
斜拉桥
特征值屈曲
非线性屈曲
稳定性分析
cable-stayed bridge
eigenvalue buckling
nonlinear buckling
stability analysis
