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| Nonlinear finite element analysis of prefabricated replaceable artificial plastic hinges |
| WU Chenglong1, SHANG Yuqing1, ZHENG Lingfeng1, WANG Qihui1, PAN Hao1, ZHAO Fei2, WANG Ming2 |
| 1. School of Civil Engineering, Qingdao University of Technology, Qingdao, Shandong 266033, China； 2. Beijing Urban Construction North Group Co., Ltd., Beijing 101301, China |
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Abstract To improve the seismic performance of prefabricated frame joints, based on bionics design, the replaceable artificial plastic hinge connection structure with the function of structural "fuse" was proposed, and nine replaceable artificial plastic hinge specimens with different parameters were designed. The low cyclic reciprocating load was applied to the replaceable artificial plastic hinge by Abaqus to investigate the seismic characteristics of the structure, such as failure mode, hysteretic performance and stiffness degradation. The results show that the failure position of the replaceable artificial plastic hinge structure is mainly concentrated at the flange buckling replaceable connecting plate, and the failure modes are flange buckling of replaceable connecting plate and shear deformation failure of shear dissipating rod. The hysteresis curve of beam end moment-angle is full with bolt slip phenomenon. The equivalent viscous damping coefficient is 0.30-0.45 with the ductility coefficient of 3.64-14.00, which illuminates that the proposed plastic hinge has good plastic deformation and energy-dissipation capacity.
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Received: 07 March 2022
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2024, Vol. 45 
