Analysis Of Long-span Curved Continuous Beam Bridge Seismic Response And Parametrics

Curved beam bridge not only meet the needs of overall path linear smoothness and continuity, and can be very good to get rid of the constraints of the terrain an d surface features, so this kind of bridge more widely at home and abroad. But in recent years, curved beam bridge still has more serious damage in numerous large earthquakes, so the research on the rules of seismic response of long-span curved continuous beam bridge under different parameters has great significance.In this paper, based on long-span curved continuous beam bridge, the research on the rule of seismic response under different parameters, the research contents are as follows:(1)Finite element model of long-span curved continuous beam bridge under different parameters was established by applying the finite element software, studying the rules of influence of radius of curvature and Pile-soil interaction on the natural vibration characteristics of bridge structure.(2)Based on response spectrum analysis methods, it mainly consider the displacement and the internal forces of the bridge under the action of the earthquake from two aspects of lateral and longitudinal excitation, in order to study the impact of the earthquake response with different curve radius for long-span curved continuous beam bridge and get the change rule of seismic response under the different radius of curvature.(3)Selection of curvature radius of 300 meters of long-span curved continuous beam bridge, this purpose is studying the impact of the earthquake response of incentive ingle by changing the Angle and getting the change rule of seismic response under the different incentive ingle.(4)Based on dynamic time history analysis method, selected of curvature radius of 300 meters of Bridges, by changing the pier height and the different of relative pier height, in order to study the impact of the earthquake response with the pier height and the different of relative pier height for long-span curved continuous beam bridge and get the change rule of seismic response.According to law of the numerical analysis, this paper put forward some useful Suggestions for long-span curved continuous beam bridge selected reasonable design parameters in seismic design.