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The seismic behavior of tall buildings can he greatly affected by non-linear soil-pile interaction during strongearthquakes.In this study a 20-storey building is examined as a typical structure supported on a pile foundation for differentconditions:(1) rigid base,i.e.no deformation in the foundation:(2) linear soil-pile system;and (3) nonlinear soil-pile system.The effects of pile foundation displacements on the behavior of tall building are investigated,and compared with the behavior ofbuildings supported on shallow foundation.With a model of non-reflective boundary between the near field and far field,Novak’s method of soil-pile interaction is improved.The computation method for vibration of pile foundations and DYNANcomputer program are introduced comprehensively.A series of dynamic experiments have been done on full-scale piles,including single pile and group,linear vibration and nonlinear vibration,to verify the validity of boundary zone model.
The seismic behavior of tall buildings can he greatly affected by non-linear soil-pile interaction during strongearthquakes.In this study a 20-storey building is examined as a typical structure supported on a pile foundation for differentconditions: (1) rigid base, ie no deformation in the foundation: (2) linear soil-pile system; and (3) nonlinear soil-pile system. The effects of pile foundation displacements on the behavior of tall building are investigated, and compared with the behavior ofbuildings supported on shallow foundation .With a model of non-reflective boundary between the near field and far field, Novak’s method of soil-pile interaction is improved. The computation method for vibration of pile foundations and DYNANcomputer program are introduced comprehensively. A series of dynamic experiments have been done on full-scale piles, including single pile and group, linear vibration and nonlinear vibration, to verify the validity of boundary zone model.