State of the Art in Connection of Vertically Distributed Reinforcements for Precast Shear Wall
ZHANG Shiqian1, CHEN Yueshi1, LIU Yanan1, MA Xinxu1, LIAO Xiandong1, XIAO Xuwen2,3
1. China Construction Eighth Engineering Division Co., Ltd., Shanghai 200122, China; 2. China Construction Engineering Corporation, Beijing 100037, China; 3. College of Civil Engineering, Tongji University, Shanghai 200092, China
Abstract：Precast concrete shear wall structure is one of the most common structures for China’s high-rise residential buildings. Reliable vertical connection is critical for the structure to ensure safety. According to the number of vertically distribution reinforcement connections or lap joints (connection degree) on the floor, the vertical connection for precast shear wall can be divided into three forms: full connection, partial connection and no connection. Based on relevant research, for three kinds of connection degrees of precast shear wall, the connection form of vertically distributed reinforcements, structural characteristics and mechanical properties are systematically summarized. Then the influence of the vertically distributed reinforcement connection on the seismic performance of the shear wall and the deficiencies of the current research are analyzed. Further, based on the principle of equivalent bending and shear resistance, a new shear wall structure with non-connected vertical distribution reinforcement is proposed, and its design calculation method is presented. Finally, the new connection technology and nondestructive testing technology for precast shear wall are predicted, and it is pointed out that the precast shear wall structure with non-connected vertically distributed reinforcements is more promising in the future.
张士前, 陈越时, 刘亚男, 马昕煦, 廖显东, 肖绪文. 装配式剪力墙竖向分布钢筋连接程度研究进展[J]. 西南交通大学学报, 2021, 56(4): 828-838.
ZHANG Shiqian, CHEN Yueshi, LIU Yanan, MA Xinxu, LIAO Xiandong, XIAO Xuwen. State of the Art in Connection of Vertically Distributed Reinforcements for Precast Shear Wall. Journal of SouthWest JiaoTong University, 2021, 56(4): 828-838.
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