Assessing the seismic behavior of steel moment frames equipped by elliptical brace through incremental dynamic analysis(IDA)

作     者：Ghasemi Jouneghani Abbas Haghollahi Habib Ghasemi Jouneghani;Abbas Haghollahi

作者机构：Department of Civil EngineeringShahid Rajaee Teacher Training UniversityTehranIran 

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

年 卷 期：2020年第19卷第2期

页      面：435-449页

核心收录：

学科分类：081405[工学-防灾减灾工程及防护工程] 08[工学] 0818[工学-地质资源与地质工程] 081402[工学-结构工程] 0815[工学-水利工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0802[工学-机械工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

主　　题：elliptic brace response modification factor overstrength factor ductility factor incremental dynamic analysis,fragility curve 

摘      要：Incremental dynamic analysis and nonlinear static pushover analysis are carried out on a performance-based design to determine the seismic demands and capacities of an elliptic braced moment resisting frame(ELBRF).The objective is to assess ductility,overstrength and response modification factors in a modern steel-braced structural system based on incremental dynamic *** integrated system is connected to a beam and column with an appropriate length while providing enough architectural space to allow for an opening without having the common problems associated with architectural spaces in braced *** different classes of buildings are considered on soil type *** dynamic analysis,nonlinear static pushover analysis and incremental nonlinear dynamic analysis related to 12 records from past earthquakes are carried out using OpenSees *** factors of ductility,overstrength and response modification are calculated for this *** values of 9.5 and 6.5 are found and suggested only for the response modification factor for ELBRF systems in allowable stress and ultimate limit state methods,*** fragility curves are plotted for the first time for this type of bracing,which contributes to the assessment of building seismic damage.