Research on Seismic Behavior of Self-Centering Prefabricated RC Frame Joint with Prestressed Tendons
LIU Hang1, WANG Sheng2, WANG Hai-shen3, PAN Peng3, ZHANG Guo-wei2
1.Beijing Building Construction Research Institute Co. Ltd., 100039, Beijing, China; 2.School of Civil and Transportation Engineering,
Beijing University of Civil Engineering and Architecture, 100044, Beijing, China; 3.Department of Civil Engineering,
Tsinghua University, 100084, Beijing, China
Abstract：
A novel prefabricated RC frame beam-column joint is presented in this paper, which may have the behaviors of self-centering and low damage after a severe earthquake. To investigate the seismic performance of the novel joint, quasi-static tests of the novel prefabricated RC frame joint and the traditional cast-in-situ RC frame joint were carried on and the test results were also compared with the finite element analysis results using OpenSees software. It can be found from the test results that when the drift ratio of the beam attains 1/18, the load capacity of the prefabricated joint keeps increasing and the structural members maintain excellence except with a few flexural slight cracks at the end of the beam. When unloaded, the joint recovered self-centering and the cracks closed. The finite element analysis results show that the load capacity of the prefabricated joint will be improved with the increase of initial prestressing force and the increase of the cross section area of the energy dissipating bars and the energy dissipating ability of the joint is mainly contributed by the energy dissipating bars.
LIU Hang1,WANG Sheng2,WANG Hai-shen3 et al. Research on Seismic Behavior of Self-Centering Prefabricated RC Frame Joint with Prestressed Tendons[J]. Architecture Technology, 2018, 49(1): 50-.
