Reinforced Concrete Hollow Pier Ductility Seismic Research And Optimization

Earthquake has always been a major problem in the field of civil engineering,destroy huge and difficult to predict, but at the same type of complex topography,mountainous area, therefore the highway and railway line to the west across the deepgroove inevitable risk gully, which makes bridges in the line often account for a largeproportion of the use of high mountain bridge pier bridge can make more rational,economical and cost savings. As for the usual high bridge pier structures do not belongto the scope of the general rule bridge seismic design of such bridges is now at homeand abroad are not readily available specification based. Therefore, the study of aspecialized high piers of the bridge for seismic design of new ideas, in-depth study ofhigh pier bridge seismic design issues, in order to improve the seismic capacity of highpier of the bridge, is very necessary.In this paper, the use of non-linear finite element analysis software ABAQUS fora typical reinforced concrete hollow high pier ductility properties and seismic designmethods have been studied mainly in research work in the following several aspects:①ductility seismic design method introduces a high ductility class pier, plasticenergy dissipation mechanism, ductility and ductility index structure measures；②using ABAQUS finite element analysis software for a typical reinforcedconcrete hollow high pier was simulated to analyze the effects of axial compressionratio, longitudinal reinforcement, lateral restraint stirrup and concrete strength on pierseismic ductility, compare different sectional curvature ductility factor of the case,resulting in the impact of these factors on the typical ductile reinforced concretehollow high pier performance;③combined effects of high ductility seismic pier axial compression ratio,reinforcement, concrete, etc. The fourth chapter analyzes the factors proposed andchecking a reinforced concrete hollow high pier ductility seismic optimization program,increasing the cross-sectional area outside the plastic hinge strength, throughcomparative analysis of seismic intensity at different pier plastic hinge unit distribution,the maximum displacement ductility factor and the top of the pier to verify its effect onductility seismic.