Research on Seismic Performance and Reasonable Restraint System of Double-deck Three-column Frame Pier Viaduct
In order to discuss the seismic performance and reasonable restraint system of double-deck three-column frame pier viaduct,in the paper,a typical three-column frame pier viaduct is taken as the engineering background,a finite element dynamic analysis model is established by SAP2000 software,the seismic performance of two restraint systems is compared through time history analysis,and the relationship between the critical section internal forces and bearing displacements and the pier height are analyzed by taking the pier height as the parameter.The research results show that:seismic response of the double-deck viaduct lower deck is significantly higher than that of upper layer,and pier and pile foundation internal force increase with the increase of pier height,and bearing displacement with the increase of pier height is a decreasing trend;the seismic performance of viaduct under plate rubber bearings and seismic isolation bearings is similar,while the plate rubber bearing system consider is more favorable by considering the cost and force requirement;and the structure applied plate rubber bearing under longitudinal and transverse seismic vibration could maintain basically elastic,and the bearing did not slide,meeting the requirements of seismic performance.
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