摘要
针对大跨度斜拉桥动力分析的现有桥面系模型的不足，提出了一种适用于叠合梁桥面系的新型双主梁模型．该模型既保证了桥面系刚度系统和质量系统的等效性，也使模型的节点数和单元数维持在一个较少的水平，提高了计算效率采用文中提出的双主梁模型和传统的三主梁模型对广州鹤洞大桥进行了动力特性分析。
In view of the defects of the available bridge girder models, this paper proposes a newdouble-girder model adapted to composite bridge sections for the dynamic analysis of long-spancable-stayed bridges. In the proposed model, the equivalence of the stiffness and mass systems ofthe bridge girders can be satisfied and the nodes and elements can be maintained in lowernumbers. The dynamic behavior of a cable-stayed bridge is analyzed by the new double-girdermodel and the conventional triple-girder model respectively. The numerical results show 'theaccuracy and efficiency of the proposed model.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第11期51-56,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省自然科学基金!980634
984059
