某斜交连续刚构桥地震反应分析

Earthquake Response Analysis for One Skew Rigid Frame Continuous Beam Bridge

采用有限元分析程序Midas/Civil,对某铁路斜交钢筋混凝土连续刚构桥采用实体单元建立了有限元分析模型,进行了全桥自振特性分析、多遇地震下的反应谱分析和时程分析,得到了关键截面的内力响应峰值和位移响应峰值;并改变斜交角(0°,10°,20°,30°,40°,45°,50°),讨论了斜交角变化对斜交连续刚构桥地震反应的影响规律。

One finite element model for railway skew rigid frame continuous beam bridge is established in Midas/Civil program with SOLID element. The natural frequency character analysis, earthquake response spectra analysis and time history analysis are carried out with the finite element model and the maximum internal force and displacement of key point section are achieved. The earthquake response rule affected by the skew angle is discussed by changing the value of skew angle（0°, 10°, 20°, 30°, 40°, 45°, 50°）.