Numerical research on prefabricated frame joint based on artificial#br#
dissipative plastic hinge under low-reversed loading
Ma Zhehao1 Zhang Jigang1,2 Liang Haizhi1,2 Li Luyu3
1. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China；
2. Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao
University of Technology, Qingdao 266033, China；3. Dalian University of Technology, Dalian 116024, China
Abstract：To enhance the anti-seismic ability of precast concrete frame structure, and to overcome the problem of severe damage of beam and column members after earthquake, an innovative configuration that artificial dissipative plastic hinge (ADPH) was introduced for precast reinforced concrete frames in which beamcolumn connections arranged at the column faces, with a mechanical hinge and a pair of detachable replaceable dissipative steel plates. In this paper, Numerical models of two ADPH joints and one RC joint were established using ABAQUS to simulate the low-reversed loading tests. The analysis results showed that: the results of plastic strain, damage location, failure mode, and hysteretic curves obtained from numerical simulation were agreed well with those from the tests，it demonstrated that the finite element simulation method for ADPH joint is feasible and the results are reliable; A parametric study based on numerical analyses of 10 ADPH joints with different detachable steel plates was underway to define the optimal values of γ parameter, the results suggest that γ values should be assumed approximately in the range 0.75-0.85, to allow the ADPH joint limit the plastic damage at detachable steel plates, and dissipate energy effectively.
马哲昊 张纪刚 梁海志 李芦钰. 装配式人工消能塑性铰节点低周往复#br#
试验数值模拟研究[J]. 土木工程学报, 2020, 53(S2): 162-168.
Ma Zhehao Zhang Jigang Liang Haizhi Li Luyu. Numerical research on prefabricated frame joint based on artificial#br#
dissipative plastic hinge under low-reversed loading. 土木工程学报, 2020, 53(S2): 162-168.
