Research On The Seismic Response Characteristic And Seismic Resistance System Of The City Curve Viaduct

As an important part of urban transit viaduct, city curve bridge is unrestricted in line, and terrain, etc, and the lines is smooth, need less construction funds, can well adapt to the surrounding environment, as a result, curve bridge is widely used. In recent years, the earthquake damage to city is more and more serious, and the traffic damage often exacerbated the post-earthquake disaster, greatly delayed relief time, give relief caused great distress, therefore, in the modern city construction, we pay more and more attention to the seismic problems city curve bridge. However, because of the complexity of the curve bridge, earthquake damage mechanism and theoretical research is still tiny, especially the long curve bridge theory research is very little, presses for further discussed.This paper discusses and analyses the next content: the structure of urban viaduct system, several structure forms of urban viaduct and viaduct tectonic characteristics, the upper structure of continuous box-girder section form, and the form of bearings and piers.This paper analyses the current research status of domestic and international bridge seismic, discusses the ground motion input mode and seismic response analysis method, the bridge's tevolution of seismic design method and current research status is analyzed and studied, Put forward the current analyzed hotspots of high piers and curve longbridge, and gives the solution and research methods.This paper established the high piers and curve bridge dynamic finite element model, using response spectrum analysis to analyze the dynamic characteristics of the structure of high piers and curve bridge, Numerical simulation and comparative analyse the dynamic properties of curve bridge under four kinds of incentive circumstances:only consistent incentive,only traveling wave effect,only consider partial coherence effect and considering traveling wave effect and partial coherence effect, Evaluate the seismic capability, summarizes research advances conclusions and recommendations for design.