一种利用液体阻尼器减小单桩基础海洋平台在地震载荷下位移的新方法  

A New Method of Using Liquid Damper to Reduce the Displacement of the Monopile Offshore Platform against Seismic Loads

作　　者：Naeim Eslami Shahrbabaki Masoud Nekooei Madjid Ghodsi Hassanabad 

机构地区：[1]Department of Civil Engineering,Science and Research Branch,Islamic Azad University,Tehran,Iran [2]Department of Marine Science and Technology,Science and Research Branch,Islamic Azad University,Tehran,Iran

出　　处：《哈尔滨工程大学学报（英文版）》2023年第2期324-333,共10页Journal of Marine Science and Application

摘　　要：The efficiency of a tuned liquid damper(TLD)in controlling the dynamic responses of offshore monopile platforms underseismic excitation has been investigated in this paper.Damping is performed by applying a type of reservoir inside a tower,which is designed optimally via seawater and a monopile body.Hydrodynamic forces due to water surface oscillation inthe reservoir act as resistant forces against structure vibration and displacement.Using ANSYS finite element(FE)software,a monopile structure with the same dimensions as the samples in the Persian Gulf climate was modeled and thenanalyzed in this research using the transient time history analysis related to the records of El-Centro,Kobe,and Tabasearthquakes for seismic investigation.The dynamic responses of the monopile platform with and without TLD werecompared after the completion of FE results.Findings show that using the mentioned TLDs reduced structure displacementby more than 50%based on the earthquake frequency content.

关 键 词：Tuned liquid damper(TLD) Offshore platform Monopile platform Seismic excitation Dynamic response 

分 类 号：P75[天文地球—海洋科学]