独塔双索面混凝土斜拉桥地震响应分析.

In order to verify the dynamic response amplitude and the corresponding structural safety of the single tower and double cable plane cable-stayed concrete bridge structure design scheme under the specific seismic excitation of the project site, based on the relevant theory of bridge structure seismic resistance, relying on the single tower and double cable plane cable-stayed bridge project of Youshui Third Bridge, the internal force response of the main tower single structure and the typical section of the main beam structure in the bridge design scheme was calculated and analyzed by using MIDAS bridge professional finite element software. In the analysis and calculation, in combination with the requirements of the design code, two methods based on the response spectrum analysis and the linear time history analysis were used for independent verification, and the differences between the response spectrum and the linear time history calculation results are evaluated respectively, as well as the similarities and differences with the seismic code. The results show that the dynamic response parameters of the bridge under the seismic action in the code are consistent with the results of linear time history analysis based on the finite element model, and the reasonable value according to the code can simplify the design calculation completely, which has important reference value for the actual engineering design. [ABSTRACT FROM AUTHOR]