Journal Article

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

Yang Weisong Guo Xun Xu Weixiao Yuan Xin

2016

Overview

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.

• Publisher: Institute of Engineering Mechanics, China Earthquake Administration,Springer Nature B.V
• Subject: Aseismic buildings / Buildings / Civil Engineering / Concrete / Control / Damage / Dynamical Systems / Earth and Environmental Science / Earth Sciences / Earthquake engineering / Earthquakes / Geotechnical Engineering & Applied Earth Sciences / Reinforced concrete / Retrofitting / Rigidity / Seismic activity / Seismic engineering / Seismic phenomena / Seismic response / Vibration / Walls / 局部应力集中 / 建筑安装 / 强柱弱梁 / 抗震加固 / 结构体系 / 结构抗震性能 / 翼墙 / 钢筋混凝土框架