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异型拱桥的地震反应不同于常规拱桥,具有明显的空间耦合效应,利用有限元理论对张家口通泰大桥的空间抗震性能进行了研究,着重分析了纵向、竖向和横向三向地震波传播效应对该桥地震反应峰值的影响,为该类型桥梁的抗震分析提供了一定的参考依据。研究结果表明,在纵向、竖向行波效应下,结构控制截面的内力均有明显的变化,横向行波效应下结构控制截面内力变化较小,但内力的峰值明显要比纵向、竖向输入产生的结果要大。
The seismic response of the arch bridge is different from the conventional arch bridge, and has obvious space coupling effect. The space seismic performance of the Zhangjiakou-Tiantai Bridge is studied by means of the finite element theory. The longitudinal, vertical and transverse three- The effect of earthquake response peak value provides a reference for the seismic analysis of this type of bridge. The results show that under the effect of longitudinal and vertical traveling waves, the internal forces of the structural control sections have obvious changes, but the internal forces of the structural control sections change little under the transverse traveling wave effect. However, the peak of the internal force obviously is higher than that of the longitudinal and vertical lines The result is bigger.