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采用简谐波形式的人工地震激励和瞬态波函数法,推导出了双跨连续梁桥在竖向地震激励下可能出现的多次弹性重撞击问题的理论解,采用组合体瞬态内力法,给出了多次重撞击力的求解方法。研究结果表明:该文方法可以合理模拟竖向地震作用下的桥面与桥墩间的多次重撞击现象,精确地求解复杂的多次重撞击力响应,模拟地震波和撞击瞬态波在结构内的传播过程,并可观察其中的“次撞击过程”。
Using the simplified harmonic wave artificial seismic excitation and transient wave function method, the theoretical solution to the multiple elastic impact impact problem of double-span continuous girder bridges under vertical seismic excitation is derived. The transient internal force method , Gives a number of heavy impact solution method. The results show that this method can reasonably simulate the phenomenon of multiple repeated impact between bridge deck and bridge pier under vertical seismic action, and can accurately solve the complex multi-impact event. The simulated seismic wave and the impact transient wave are well- The spread of the process, and can be observed in which “the impact of the process.”