Study On Dynamic Characteristics And Seismic Behavior For Cable-stayed Bridge With Straight And Curved Girder

With the process of urbanization accelerated and the development of urbantransport, a growing number of city bridges have been constructed. In order to meet therequirements of beautiful appearance and novelty structures, many diverse bridges haveboomed over10years. The cable-stayed bridge is widely constructed with itsadvantages of beautiful appearance, gentle structure, and strong adaptability. China is acountry with many earthquakes, a lot of earthquake disaster happened during recentyears. Cable-stayed bridges as an important part of urban traffic, the destruction ofcable-stayed bridges in the earthquake will cause great human and economic losses.This paper studies the dynamic and seismic characteristics of the straight and curveddouble-layer girder cable-stayed bridge, provides theoretical reference for the seismicanalysis of similar bridge. Specific research includes the following several aspects:â‘ Describes the basic theory of the bridge seismic design and calculation,Generalized the basic method of bridge seismic response analysis.â‘¡Using the general finite element software ANSYS, establishment spatial finiteelement model of the curved cable-stayed bridge, consider the role of structuraldamping and the role of the pile soil interaction.â‘¢C onduct response spectrum analysis and dynamic time-history analysis for thecurved cable-stayed bridge, and get the weak part of the stress and displacement indifferent directions earthquake, analysis the seismic capacity and demand.â‘£Explore the difference between seismic response of straight and curveddouble-layer girder cable-stayed bridge whether considering pile soil interaction.