摘要
结合一座澳门澳凼第三大桥斜拉桥的工程设计实例,采用大型有限元分析程序ANSYS,选取空间BEAM188、BEAM4及SHELL63单元建立动力计算模型,对比研究了主塔墩底在假定固结和考虑桩土共同工作这两种边界约束处理方式下的动力特性;并选取三条地震波在桥的纵、横向分别进行桥梁地震作用下的时程分析,给出了主梁和中塔的内力、位移及时程响应。
In this paper, taking an engineering design case about a cable-stayed bridge of the third Aodang bridge as an example in Macao, the dynamic calculating model of the cable-stayed bridge is created by the finite element analysis program ANSYS. The dynamic characteristic of the cable-stayed bridg is discussed and is compared under two different boundary conditions, that is, the fixed end is assumed and the interaction of picket-soil is considered for the bottom of the bridge tower. In addition, a time history analysis is conducted for the cable-stayed bridge subjected to three earthquake waves in the longitudinal and the lateral direction, respectively. The internal force, displacement and the time history response of the main beam and mid-tower are obtained.
出处
《世界地震工程》
CSCD
北大核心
2005年第1期81-86,共6页
World Earthquake Engineering
