预制可更换人工塑性铰连接的非线性有限元分析  

Nonlinear finite element analysis of prefabricated replaceable artificial plastic hinges

作　　者：吴成龙[1] 尚育卿 郑灵枫 王其辉 潘昊 赵飞 王明 WU Chenglong;SHANG Yuqing;ZHENG Lingfeng;WANG Qihui;PAN Hao;ZHAO Fei;WANG Ming(School of Civil Engineering,Qingdao University of Technology,Qingdao,Shandong 266033,China;Beijing Urban Construction North Group Co.,Ltd.,Beijing 101301,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]北京城建北方集团有限公司,北京101301

出　　处：《江苏大学学报（自然科学版）》2024年第3期354-361,共8页Journal of Jiangsu University：Natural Science Edition

基　　金：山东省自然科学基金资助项目青年项目(ZR2021QE046);国家自然科学基金资助项目(5220848)。

摘　　要：为提高装配式框架节点的抗震性能,基于仿生学设计,提出一种具有结构“保险丝”功能的可更换人工塑性铰连接构造,设计了9个不同参数的可更换人工塑性铰试件.利用Abaqus软件,对可更换人工塑性铰试件施加低周往复荷载,探究该构造的破坏模式、滞回性能、刚度退化等抗震特性.研究结果表明:可更换人工塑性铰构造的破坏位置主要集中于翼缘屈曲可更换连接板处,破坏模式为翼缘屈曲可更换连接板屈曲变形和抗剪耗能杆的剪切变形破坏;梁端弯矩-层间位移角的滞回曲线饱满,且有螺栓滑移现象,等效黏滞阻尼系数为0.30~0.45,延性系数为3.64~14.00,表现出良好的塑性变形和耗能能力.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.

关 键 词：塑性铰 装配式 低周往复荷载 有限元分析 耗能能力 

分 类 号：TU391[建筑科学—结构工程]