预制梁端削弱型钢梁-SRC柱组合节点抗震性能数值分析  

Numerical analysis of seismic performance of prefabricated beam end weakened steel beam-SRC column composite joints

作　　者：王其辉 刘继明[1] 吴成龙[1] 李绍辉 施兴林 张新永 郑灵枫 WANG Qihui;LIU Jiming;WU Chenglong;LI Shaohui;SHI Xinglin;ZHANG Xinyong;ZHENG Lingfeng(School of Civil Engineering,Qingdao University of Technology,Qingdao,Shandong 266033,China;Engineering Quality Inspection and Appraisal Center,Qingdao University of Technology,Qingdao,Shandong 266033,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]青岛理工大学工程质量检测鉴定中心,山东青岛266033

出　　处：《中国科技论文》2023年第2期204-214,共11页China Sciencepaper

基　　金：国家自然科学基金资助项目(52208482);山东省自然科学基金资助项目(ZR2021QE046)。

摘　　要：为了进一步研究预制梁端削弱型钢梁-钢骨混凝土(steel reinforcement concrete,SRC)柱组合节点的抗震性能,在验证有限元数值模型可靠性的基础上,通过ABAQUS建立了6个梁端削弱构造形式的有限元节点模型,分析不同构造形式对节点滞回性能、弯矩-转角曲线、延性性能及性能退化的影响规律。结果表明:仅梁端翼缘削弱时,对节点耗能性能、承载能力、延性变形以及强度和刚度性能退化影响较小;随着梁端翼缘和腹板同时增加削弱尺寸程度,可显著提高节点耗能能力,最大增幅约为31.25%;承载力总体呈现降低的变化趋势,最大降低仅为7.0%;延性性能提高10.66%;对强度退化性能略有改善。选用翼缘和腹板同时削弱的构造形式,可改善节点的耗能能力和延性性能。To further study the seismic performance of precast beam end weakened steel beam-steel reinforcement concrete(SRC)column composite joints,six finite element joint models of beam end weakened structures were established based on the verification of the reliability of the finite element numerical model through ABAQUS,and the effects on the hysteretic performance,moment angle curve,ductility and performance degradation of the joints were analyzed.The results show that when the beam end flange is weakened,it has little effect on the energy dissipation performance,bearing capacity,ductile deformation,strength and stiffness degradation of the joint.With the increase of weakening-size effect of beam end flange and web,the energy dissipation capacity of the joint can be significantly improved,with a maximum increase of about 31.25%.The overall bearing capacity shows a decreasing trend,and the maximum reduction is only 7.0%.The ductility is increased by 10.66%.The strength degradation performance is slightly improved.The structural form of flange and web with the weakening-size effect at the same time can improve the energy dissipation capacity and ductility of the joint.

关 键 词：钢骨混凝土 钢混组合节点 抗震性能 梁端削弱构造 有限元分析 

分 类 号：TU398.9[建筑科学—结构工程]