【摘要】 研究静水中铰接塔平台在简谐地震作用下的动力响应特性。将铰接塔平台简化为质量集中在节点的杆模型,建立了铰接塔平台的非线性运动微分方程,计算了高400m的铰接塔平台的自振特性,以及不同水深情况下地震引起的平台的动力响应,讨论了不同水深及底铰摩擦系数对铰接塔平台地震响应的影响。更多还原

【Abstract】 The paper studies the dynamic response of an articulated tower platform(ATP)in the still water under harmonic earthquake loadings.The platform is modeled as a stick with masses lumped at the nodes,the non-linear differential motion equation of ATP is derived,and the free vibration behaviors as well as the dynamic response excited by earthquakes under different water levels are calculated for a400-meter-high articulated platform.The influences on the ATP’s seismic response of different parameter values such as mean water depth and the coefficient of friction are investigated.更多还原