Pushover Analysis Of Pile-Soil-Structure Interaction

Pushover analysis is one of the important method of Seismic performance analysis, the results of nonlinear static and elastic response spectrum are combined closely by it. As a method of predicting the structure's seismic performance and dynamic response under earthquake, it is wildly used in seismic design which is based on the structure performance. Scholars from various countries have carried out a series of theoretical and applied research, but mainly limited to the case of rigid foundation condition. Considering pile-soil-structure interaction Pushover analysis is relatively small. So, this paper attempts to use the pushover method to analysis the Pile-soil-structure interaction system.Firstly, this paper describes the basic principles of pushover analysis. And using the pushover method to analysis the 12-story frame structure which is based on rigid foundation with the finite element analysis program SAP2000.The mainly purpose of this analysis is the parameters of the frame structure performance point under the frequent and rare case intensity of 7 and 8 seismic degrees. Then evalueate the anti-seimic ability and behavior of the structure by parameters.After comparing the analysis parameters,the conclusion which the structure behavior under the different lateral load patterns be drawed.A consideration of pile-soil-structure interaction system model which is based on the anti-coefficient method of Winkler foundation model be founded. After finidshing the analysis of the interaction system model by SAP2000, compare the parameters and disscuss the commonalities and differences between the two interaction system.Also,compare the result of the pushover analysis and time history analysis. Finally, compare the number of relevant parameters on the impact of interaction system,and summarizes the interaction system of the sensitivity of the relevant parameters.