摘要
桥面系采用梁单元模拟时,横梁的模拟正确与否对计算结果影响很大。在对横梁的力学特性分析基础上,总结了刚性材料法的不足;提出的约束方程法,可以简单有效建立起刚性横梁节点之间的相互位移关系,并应用通用有限元程序ANSYS给出了算例,证明该方法具有实际应用价值,尤其适合于斜拉桥和悬索桥的空间有限元模拟。
The crossbeam simulation methods would make essential effects when the bridge FE spatial model is built.The paper analyses the crossbeam mechanical properties and sums up the disadvantages using the rigid material method.Then,the displacement relation between the nodes in one beam is made up by the constraint equation method.A calculation example is given to prove the validity of this constraint equation method.The constraint equation method is valuable,and the method also be used for FE modeling of the cable-stayed bridges and suspension bridges.
出处
《世界地震工程》
CSCD
北大核心
2008年第1期63-67,共5页
World Earthquake Engineering
关键词
刚臂
约束方程
耦合
ANSYS
斜拉桥
rigid beam
constraint equation
couple
ANSYS
Cable-stayed bridge
