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基于系统化的集总参数模型表征土体动力特性,上部结构每层恢复力模型采用Takeda滞回模型,研究了地震动输入强度和土体剪切波速对消能减震结构损伤指数的影响。研究结果表明:无论是否考虑土-结构相互作用,随着结构阻尼比的增加,消能减震结构的损伤指数都得到了有效降低;考虑土-结构相互作用后,在峰值加速度为0.1g地震动作用下,非减震结构随着土体剪切波速的下降结构损伤指数基本不变,而对于消能减震结构,随着土体剪切波速的下降结构损伤指数会上升;当地震动峰值加速度增加到0.3g时,非减震结构与减震结构随着土体剪切波速的下降,结构损伤指数随之增大。
Based on the systematical lumped parameter model to characterize the dynamic characteristics of soil, the Takeda hysteresis model was used to calculate the restoring force of each layer in the superstructure, and the effect of input strength and soil shear wave velocity on the damage index of the energy dissipation structure was studied. The results show that with or without considering the soil-structure interaction, the damage index of the energy-dissipating and shock-absorbing structure is effectively reduced with the increase of the structural damping ratio. After considering the soil-structure interaction, with the peak acceleration of 0.1 g Under the action, the structural damage index of the non-shock-absorbing structure decreases with the shear wave velocity of the soil, while the structural damage index of the non-shock-absorbing structure decreases with the decreasing of the shear wave velocity of the soil. When the acceleration increases to 0.3g, the structure damage index increases with the decrease of the shear wave velocity of the soil in the non-damping structure and the damping structure.