Vibration control of piled-structures through structure-soil-structure-interaction |
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| Institution: | 1. School of Environment and Technology, University of Brighton, Cockcroft Building, Lewes Road, BN24GJ Brighton, UK;2. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ Oxford, UK;1. Sapienza Università di Roma, Rome, Italy and Department of Structural Engineering, University of California, San Diego, USA;2. Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093-0085, USA;1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300354, China;2. Department of Civil Engineering, University of Southern California, Los Angeles, CA 90089, USA;1. Isfahan University of Technology, Esfahan 8415683111, Iran;2. University of Isfahan, Esfahan 8174673441, Iran;1. Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería (SIANI), Universidad de Las Palmas de Gran Canaria, Edificio Central del Parque Científico y Tecnológico, Campus Universitario de Tafira, 35017 Las Palmas de Gran Canaria, Spain;2. Department of Civil Engineering, KU Leuven, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium |
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| Abstract: | 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. |
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| Keywords: | Structure-soil-structure-interaction Vibration control Ground motion excitation Vibrating barrier Piled-structures |
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