Collapse Simulation and Response Assessment of a Large Cooling Tower Subjected to Strong Earthquake Ground Motions

作     者：Tiancan Huang Hao Zhou Hamid Beiraghi 

作者机构：Earthquake Engineering Research&Test CenterGuangzhou UniversityGuangzhou510405China Department of Civil EngineeringSouth China University of TechnologyGuangzhou510641China Department of Civil EngineeringMahdishahr BranchIslamic Azad UniversityMahdi Shahr***Iran 

出 版 物：《Computer Modeling in Engineering & Sciences》 (工程与科学中的计算机建模（英文）)

年 卷 期：2020年第123卷第5期

页      面：691-715页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：support from the National Key Research and Development Project of China and the National Natural Science Foundation of China is gratefully appreciated 

主　　题：Cooling tower concrete damage mechanics collapse criterion responses 

摘      要：Large cooling towers in thermal power plants and nuclear power plants are likely to suffer from strong earthquakes during service *** resulting destructions of the cooling towers would endanger the power plants and threaten the security of the related *** is important to use effective means to evaluate the safety status of the cooling towers and guide further precautions as well as retrofitting *** paper is therefore focused on an elaborate numerical investigation to the earthquake-induced collapses of a large cooling tower structure.A complete numerical work for simulation of material failure,component fracture,structural buckling and system collapse is presented by integrating the stochastic damage constitutive model of concrete,refined structural element models,and some other key *** results indicate that the damage behavior and collapse mode of the cooling tower are affected notably by the randomness specification of ground *** collapse mechanisms of the cooling tower are studied from the energy absorption and dissipation points of *** effective energy-based criterion is introduced to identify the collapse of the cooling tower under ground motion *** distinct collapse modes are observed,the collapse criterion can predict well the damage and failure of the cooling *** proposed methodology is vital to better understanding the disastrous mechanisms and potential failure paths in optimal design of the cooling towers to ensure safety.