Comparative study on story drift limits of RC structures under #br#
earthquakes between Chinese codes and American codes
Han Xiaolei1，2 Zhang Lei1 Yang Guang1 Ji Jing1，2 Li Jianle3
1. School of Civil Engineering & Transportation，South China University of Technology， Guangzhou 510641，China；
2. State Key Laboratory of Subtropical Architecture Science， South China University of Technology， Guangzhou 510641，China；
3. Weiwang Architecture and Technology Co.，Ltd.，Guangzhou 510623， China
Abstract：To study the rationality of story drift limits in Chinese codes， the American codes were compared. According to the principle of equal displacement， a method of comparing the story drift limits between Chinese codes and American codes was deduced and the ratio of story drift limits of Chinese-American codes， β， was proposed. A total of 80 typical reinforced concrete structural models， including frame structures， shear wall structures， frame-shear wall structures and frame-core tube structures， were designed， and the weak nonlinearity of structure under fortified earthquakes can be verified. Furthermore， the influences of structural system， site classification and fortification intensity on β were analyzedThe results show that β is always larger than 1.0 for all models， indicating that the story drift limits in Chinese codes are more stringent than those in American codes. With β used as the correction factor， story drift limits for all the 4 structural systems were adjusted to 1/500. Additionally， 16 models were designed and structural safety under strong earthquakes was verified by employing component deformation-based performance evaluation method. It is suggested that the story drift limits of RC structures under frequent earthquakes can be taken as 1/500.
韩小雷 张垒 杨光 季静 李建乐. 地震作用下中美规范RC结构层间位移角限值的#br#
对比研究[J]. 土木工程学报, 2020, 53(1): 31-38.
Han Xiaolei Zhang Lei Yang Guang Ji Jing Li Jianle. Comparative study on story drift limits of RC structures under #br#
earthquakes between Chinese codes and American codes. 土木工程学报, 2020, 53(1): 31-38.
