Seismic response of tall building considering soil-pile-structure interaction
Han Yingcai
Fluor Canada Ltd., Calgary, AB, Canada
Abstract: The seismic behavior of tall buildings can be greatly
affected by non-linear soil-pile interaction during strong earthquakes. In this
study a 20-storey building is examined as a typical structure supported on a
pile foundation for different conditions: (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 of buildings 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 DYNAN computer 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.
Keywords: dynamic soil-pile-structure interaction; soil dynamics;
structural dynamics; nonlinear vibration, seismic response of tall building.
