Dissertation
Dissertation > Transportation > Road transport > Bridges and Culverts > Investigation, design and calculation > Bridge Design > Damage Analysis and Seismic Design

Finite Element Ansysis of Pier Considering Soil Foundation Structure Interaction

Author MaYanJiao
Tutor ZhengDaWei
School Liaoning Technical University
Course Bridge and Tunnel Engineering
Keywords Pier seismic Soil–foundation structure interaction Finite elementanalysis Artificial boundary Modal analysis
CLC U442.55
Type Master's thesis
Year 2012
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With the earthquake occurring frequently, the seismic research of bridges aremore wildly concerned. Interaction system with infrastructure and soil has been aseismic study of a special problem. In order to prove soil-foundation-structuremore harmful than rigid foundation, It takes use of ANSYS to analysis thetwo-dimensional seismic response of the bridge structure, then concludescharacter of the interaction system among soil,structure and foundation.Simulation is completed by the seismic analysis of a viable two-dimensionalfinite element model of soil-foundation-structure interaction. Firstly itdetermines the constitutive relation of the model, and then determines theconstitutive model and parameters of the system. Finally, feasible finite elementmodel is established by the ANSYS software to analyze the various factors thatmay affect the seismic response, such as gravity, the design and selection ofearthquake dynamics, the bridge superstructure simplified and artificial boundaryselection and so on. Pier earthquake response considering the interaction is moreunfavorable by comparing the rigid foundation and the result of the interactionfoundation. It proves that it is necessary to consider the soil dynamic structuremodel, and comes to the best ANSYS simulation model which is constituted by theupper elastic-plastic constitutive model in upper and the DP constitutive model inlower.

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