【摘要】 以南水北调中线安阳河倒虹吸节制闸为例,采用振型分解反应谱法,考虑流固耦合、启闭机室、工作桥、检修桥及交通桥对闸室振动特性的影响和地基的参振作用,分析了最危险方向地震和三向耦合地震激励下的振动特性及应力应变情况。结果表明,三向耦合地震能更准确地反映结构的地震响应;牛腿部位的抗震设计应考虑三向耦合地震的作用,其他部位仅考虑最不利方向的地震影响即能满足设计需要。更多还原

【Abstract】 Taking the inverse-siphon regulator of Anyang River in South-to-North water diversion middle route for an example,response spectrum method for mode of vibration decomposition is applied to analyze vibration performance and stress-strain in the most dangerous earthquake and three-dimensional seismic coupling excitation by considering the influence of fluid solid coupling,hoist room,working bridge,repairing bridge and traffic bridge on lock chamber and foundation.The results show that three-dimensional seismic coupling can reflect seismic response of structure well;the seismic design of corbel should be considered the role of three-dimensional seismic coupling and other parts only should be considered the worst seismic influence,which can meet the design requirements.更多还原