Analysis On Seismic Response Of Prestressed Concrete Continuous Rigid Frame Bridge With V-Shaped Pier

V-pier rigid frame bridge is widely used in urban bridge construction because of its beautiful appearance and reasonable cost.But in recent years,earthquakes occur frequently all over the world.Earthquakes threat the safety of bridge structures seriously.Therefore,it is necessary to analyze the seismic response of bridge structures.In this thesis,the seismic response of a V-shaped pier prestressed concrete continuous rigid frame bridge in Guizhou is analyzed.Firstly,the full-bridge finite element model was established by using the bridge-professional finite element software MIDAS Civil.The dynamic characteristics of the bridge were analyzed,and the cycle,frequency and vibration mode of the bridge were obtained.Secondly,the response spectrum of E1 earthquake and the dynamic time history of E1 earthquake are input into the MIDAS Civil full-bridge model respectively,and the response results of two different analysis methods of the bridge under E1 seismic load are obtained.Thirdly,E2 seismic response spectrum and E2 seismic linear dynamic time history are input into MIDAS Civil full-bridge model,and the response law of different analysis methods under E2 seismic load is obtained.Finally,the linear dynamic time-history method and the non-linear dynamic time-history method are used to analyze the seismic response under E2 earthquake.And the laws of the linear response and the non-linear response are obtained after comparing the results.The conclusions in this thesis have a certain reference value for similar projects.