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Influences of Pile-Soil-Structure Interaction on Seismic Response of Self-Anchored Suspension Bridge
Tian-fei Li Institute of Bridge Engineering, Dalian University of Technology, Dalian,
Liaoning Province, P. R. China Zhe Zhang Institute of Bridge Engineering, Dalian University of Technology, Dalian,
Liaoning Province, P. R. China Lei Shi Institute of Bridge Engineering, Dalian University of Technology, Dalian,
Liaoning Province, P. R. China
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ABSTRACT |
The scheme of Dalian Jinzhou Strait Bridge is taken as an example, which is a self-anchored suspension bridge. Employing the finite element program ANSYS, A three-dimensional finite element model for the bridge is established and the pile-soil-structure interaction is simulated using the merging pile model of equivalent embedded fixation. Dynamic characteristics and seismic response analysis of the bridge are carried out. Effects of Pile-soil-structure interaction on seismic response of the bridge are studied and comparative analysis is investigated between the bridge and anchored suspension bridge with the same parameters of self-anchored. Results show that Soil-pile-the structure interaction has the more obvious role on seismic response of large-span self-anchored suspension bridge. It makes displacement significantly increase, moment at bottom of tower slightly decline and moment of stiffening beam in middle of main span significantly increase.
Keywords: Pile-soil-structure interaction; dynamic characteristics; seismic response; self-anchored; suspension bridge
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