Wing walls for enhancing the seismic performance of reinforced concrete frame structures  

作　　者：Yang Weisong Guo Xun Xu Weixiao Yuan Xin 

机构地区：[1]School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China [2]Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China [3]Institute of Disaster Prevention, Sanhe 06520, China [4]Sichuan Provincial Architectural Design and Research Institute, Chengdu 610000, China

出　　处：《Earthquake Engineering and Engineering Vibration》2016年第2期411-423,共13页地震工程与工程振动（英文刊）

基　　金：National Natural Science Foundation of China under Grant Nos.51478117,51508295,51478231;the Shandong Province Taishan Scholar Advanced Disciplinary Talent Group Project

摘　　要：A building retrofitted with wing walls in the bottom story, which was damaged during the 2008 M8.0 Wenchuan earthquake in China, is introduced and a corresponding 1/4 scale wing wall-frame model was subjected to shake table motions to study the seismic behavior of this retrofitted structural system. The results show that wing walls can effectively protect columns from damage by moving areas that bear reciprocating tension and compression to the sections of the wing walls, thus achieving an extra measure of seismic fortification. A ‘strong column-weak beam＇ mechanism was realized, the flexural rigidity of the vertical member was strengthened, and a more uniform distribution of deformation among all the stories was measured. In addition, the joint between the wing walls and the beams suffered severe damage during the tests, due to an area of local stress concentration. A longer area of intensive stirrup is suggested in the end of the beams.A building retrofitted with wing walls in the bottom story, which was damaged during the 2008 M8.0 Wenchuan earthquake in China, is introduced and a corresponding 1/4 scale wing wall-frame model was subjected to shake table motions to study the seismic behavior of this retrofitted structural system. The results show that wing walls can effectively protect columns from damage by moving areas that bear reciprocating tension and compression to the sections of the wing walls, thus achieving an extra measure of seismic fortification. A ‘strong column-weak beam＇ mechanism was realized, the flexural rigidity of the vertical member was strengthened, and a more uniform distribution of deformation among all the stories was measured. In addition, the joint between the wing walls and the beams suffered severe damage during the tests, due to an area of local stress concentration. A longer area of intensive stirrup is suggested in the end of the beams.

关 键 词：story walls flexural shake columns suffered sections drift reinforced frames 

分 类 号：TU375.4[建筑科学—结构工程] TU311.3