【摘要】 以三峡大坝升船机为工程背景,通过升船机结构的有限元建模,进行升船机的动力特性分析。在此基础上计算结构的风振响应,以及在EL-centro地震波及三峡人工模拟地震波的作用下结构的地震响应。最后比较分析结构在这两种地震波作用下的地震响应,并对存在的结构响应差异进行解释。结果显示,顶部机房结构的风致振动响应较显著,地震鞭梢效应也非常明显。研究结果可为升船机结构的抗震抗风安全性能评估和进一步的减震隔震研究提供重要的依据。更多还原

【Abstract】 The finite element model of the ship-lifter structure of the Three-Gorge reservoir was established,and its dynamic characteristics were analyzed.On this basis,the wind-induced vibration response of the structure and the responses of the structure induced by EL-centro seismic wave and manual seismic wave were calculated respectively.Finally,the responses induced by the two seismic waves were compared and analyzed,and the difference of responses of the existing structures was explained.The results indicate that the wind-induced vibration response of the roof machine room and the seismic whiplash effect are significant.This work has provided an important reference for the assessment of the structural anti-seismic and anti-wind performance as well as the further study of damping and seismic isolation.更多还原