基于瞬态动力法的桥梁动力响应分析及试验研究

Analysis and Experiment on Dynamic Responses of Bridge Based on Transient Dynamics Method

对大件运输过桥时桥梁结构的动力响应进行了试验研究,并采用基于瞬态动力学的有限元法进行了模拟,得到了桥梁跨中挠度的时程曲线。通过理论与试验数据的对比分析,验证了有限元分析的有效性,对今后大件过桥时桥梁的安全评估有实际意义。

Experiment on bridge dynamic responses was carried out for over-size transport. Finite element method based on Transient Dynamics was used for simulation and the time-history curve for span deflection was obtained. The Validity of finite element analysis was verified through the comparison of theoretical and experimental data,which is of practical significance for bridge safety assessment.