深汕特别合作区望鹏大桥斜拉桥抗震性能分析

Analysis on Seismic Performance of Wangpeng Bridge Cable-stayed Bridge in Shenzhen - Shantou Special Cooperation Zone

摘要:

为研究大跨度斜拉桥抗震性能，以深汕特别合作区望鹏大桥工程为研究对象，采用反应谱法和非线性时程分析法，对双拱形桥塔钢-混组合梁大跨度斜拉桥在E1、E2地震作用下的地震反应进行对比分析。结果表明，两种分析方法得到的结果能够互相补充、印证，确保计算得到的结构内力和变形能够反映实际地震作用下的结构反应；望鹏大桥主桥抗震性能满足预期目标，设置阻尼器能有效改善大跨度斜拉桥的抗震性能。

Abstract:

In order to study the seismic performance of long-span cable-stayed bridges, taking the project of Wangpeng Bridge in Shenzhen-Shantou Special Cooperation Zone as the research object, the response spectrum method and the nonlinear time history analysis method are used to compare and analyze the seismic response of the double-arched pylon steel-concrete composite girder long-span cable-stayed bridge under E1 and E2 earthquakes. The results show that the results obtained by two analysis methods can complement and confirm each other to ensure that the structural internal force and deformation obtained by the calculation can reflect the structural response under the actual earthquake action. The seismic performance of the main bridge of Wangpeng Bridge can satisfy the expected objective and the seismic performance of the long-span cable-stayed bridge can be effectively improved by setting dampers.