Vibration control of piled-structures through structure-soil-structure-interaction
Vibration control of piled-structures through structure-soil-structure-interaction
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DOI：
10.1016/j.soildyn.2015.04.006
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发表时间：
2015-10-01
影响因子：
4
通讯作者：
Tombari, Alessandro
中科院分区：
文献类型：
--
作者：
Cacciola, Pierfrancesco;Espinosa, Maria Garcia;Tombari, Alessandro
本文研究了在地震动作用下既有结构的振动控制问题。为此，首次提出利用结构-土壤-结构机制来开发一种装置，该装置位于土壤中但与结构分离，能够吸收部分地震能量，从而减少邻近结构的振动。该装置的设计是为了保护抗震结构免受地震引起的地面运动的影响。通过将地面运动建模为零均值准平稳响应谱兼容高斯随机过程，将土壤建模为粘弹性介质，将目标振动结构建模为线性行为结构，通过优化过程设计了该装置，本文称为振动屏障（ViBa）。各种数值和实验结果表明，ViBa的有效性。值得注意的是，结构响应的显著降低高达44%。(C)2015爱思唯尔有限公司版权所有。
This paper deals with the vibration control of existing structures forced by earthquake induced ground motion. To this aim it is proposed for the first time to exploit the structure-soil-structure mechanism to develop a device, hosted in the soil but detached from the structure, able to absorb part of the seismic energy so to reduce the vibration of neighbourhood structures. The design of the device is herein addressed to protect monopile structures from earthquake induced ground motion. By modelling the ground motion as zero-mean quasi-stationary response-spectrum-compatible Gaussian stochastic process, the soil as visco-elastic medium and the target monopiled-structure as a linear behaving structure the device, herein called Vibrating Barrier (ViBa), has been designed through an optimization procedure. Various numerical and experimental results are produced to show the effectiveness of the ViBa. Remarkably, a significant reduction of the structural response up to 44% has been achieved. (C) 2015 Elsevier Ltd. All rights reserved.