Experimental Study on Behavior of Steel-hoop RC Beam-Column Joints under Cyclic Loading
CAO Hui1,2, YONG Biao1, Hua Jianmin1,2, Li Guorong1,2
1 College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2 Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, China
Abstract：Ordinary RC beam-column joint is the place where the longitudinal bars of beams meet and cross each other, which often makes the joint so crowded that the concrete is hard to be cast and vibrated . Furthermore, since the longitudinal bars from different directions are at the same level, some of them have to be bended to avoid running into the others. These questions not only bring difficutlty to the consctruction, but also cause impact on the behavior of the component. This paper suggested a new type of RC beam-column joint, i.e. steel-hoop RC joint. Two steel-hoop RC beam-column joints were made, and with which pseudo-static tests were carried out under cyclic loading. The shear capacity, failure modes, and ductility, as well as energy dissipation of the two joints were studied. Several FEM models were established and analyzed with ABAQUS. The results show that the suggested new type of RC joint can significantly improve the convenience of concrete construction, and achieves good performance of bearing capacity and seismic behavior
2014, Vol. 33 
