Dynamic response analysis of liquefied site-pile group foundation-structure system —large-scale shaking table model test
摘要
In this large-scale shaking table model test, the acceleration responses of soil and structures and pore water pressures and other signals are measured. The seismic responses of soil and pile group foundations, the development of pore water pressure of liquefiable soil are introduced, and the lateral deformation of soil is analyzed. The results show that when 0.05g beat wave is input, the acceleration responses of soil and pile foundation are enlarged obviously, and the pore pressure ratio increases stightly throughout the soil. Besides, the lateral displacements of soil are small. When 0.3g Wenchuan Earthquake seismic record is input, the law of acceleration response of pile foundation is basically the same as that of soil. The pore pressures rise rapidly and the soil has been liquefied, and lateral displacements of soil are large. The results of this paper are dynamic response of liquefied non-free site test in a series of large-scale shaking table tests on soil-pile group-superstructure system. The results can be used for comparative analysis and verification of numerical simulation in the future.