Investigation on a mitigation scheme to resist the progressive collapse of reinforced concrete buildings

作     者：Iman TABAEYE IZADI Abdolrasoul RANJBARAN 

作者机构：Department of Civil EngineeringFaculty of EngineeringUniversity of ShirazShirazIran 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2012年第6卷第4期

页      面：421-430页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：prevent progressive collapse alternate load path reinforced concrete buildings nonlinear dynamic retrofitting cable steel hat braced frame barrel and wedge 

摘      要：This study presents the investigation of the approach which was presented by Thaer *** Alrudaini to provide the alternate load path to redistribute residual loads and preventing from the potential progressive collapse of RC *** was proposed to transfer the residual loads upwards above the failed column of RC buildings by vertical cables hanged at the top to a hat steel braced frame seated on top of the building which in turn redistributes the residual loads to the adjacent *** this study a ten-storey regular structural building has been considered to investigate progressive collapse *** design is based on ACI 318-08 concrete building code for special RC frames and the nonlinear dynamic analysis is carried out using SAP2000 software,following UFC4-023-03 *** independent failure scenarios are adopted in the investigation,including six external removal cases in different floors and three removal cases in the first floor.A new detail is proposed by using barrel and wedge to improve residual forces transfer to the cables after removal of the *** results show that progressive collapse of building that resulted from potential failure of columns located in floors can be efficiently resisted by using this method.