Optimization of design parameters for controlled rocking steel braced dual-frames

作     者：Sobhan Ghasemi M.Firoozi Nezamabadi Abdolreza S.Moghadam Mahmood Hosseini Sobhan Ghasemi;M.Firoozi Nezamabadi;Abdolreza S.Moghadam;Mahmood Hosseini

作者机构：Department of Civil EngineeringSouth Tehran BranchIslamic Azad UniversityTehranIran Structural Engineering Research CenterInternational Institute of Earthquake Engineering and Seismology(IIEES)TehranIran 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2022年第21卷第4期

页      面：1053-1068页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

主　　题：self-centering rocking steel braced frame design parameters optimization low damage 

摘      要：A controlled rocking concentrically steel braced frame(CR-CSBF)is introduced as an alternative to conventional methods to prevent major structural damage during large *** is equipped with elastic post-tensioned(PT)cables and replaceable devices or fuses to provide overturning resistance and dissipate energy,*** CR-CSBFs are not officially legalized in globally valid codes for new buildings,it is expected to be presented in them in the near *** main goal of this study is to determine the optimal design parameters consist of the yield strength and modulus of elasticity of the fuse,the initial force of the PT cable,and the gravity load on the rocking column,considering different heights of the frame,spanning ratios and ground motion types for dual-configuration *** time-history analyses are performed in *** study aims to define the optimal input variables as effective design parameters of CR-CSBFs by comparing four seismic responses consisting of story drift,roof displacement,roof acceleration and base shear,and also using the Euclidean metric optimization *** the previous research,this study is innovative and first of its *** results demonstrate that the optimal design parameters are variable for various conditions.