内加强环式圆钢管混凝土柱-钢蜂窝梁节点抗震性能研究  

Seismic Performance of Concrete Filled CircularSteel Tube-steel Honeycomb Beam Joint withInternalReinforcement Ring

作　　者：李明[1] 周稚竣 吴潜[1] 李志伟 刘岗 LI Ming;ZHOU Zhijun;WU Qian;LI Zhiwei;LIU Gang(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2023年第5期845-852,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51978422);辽宁省教育厅科研项目(LJKZ0561)。

摘　　要：目的 研究内加强环式圆钢管混凝土柱-钢蜂窝梁节点的抗震性能,为工程应用提供参考。方法 采用ABAQUS软件建立节点模型,对比其与内加强环式圆钢管混凝土柱-钢实腹梁的抗震性能,分析不同因素对节点抗震性能的影响。结果 与内加强环式圆钢管混凝土柱-钢实腹梁相比,两者抗震性能相近;梁柱线刚度比和钢材牌号对抗震性能影响较大,但梁柱线刚度比对节点的承载力和耗能能力影响最大,最大相差分别为169.3%和29%,钢材牌号对节点的延性影响最大,最大相差41.2%;含钢率、内加强环宽度和厚度对抗震性能影响不大,但对延性、耗能能力、屈服和极限位移影响较明显。结论 内加强环式圆钢管混凝土柱-钢蜂窝梁节点具有可行性,符合“强柱弱梁”的抗震设计要求。To study the seismic performance of concrete filled circular steel tube-steel honeycomb beam joint with internal reinforcement ring(CFST-HBN),and provide reference for engineering application,such a model was established by Software ABAQUS.Its′seismic performance was compared with that of concrete filled circular steel tube-steel solid web beam joint(CFST-SBN).Different effect factors on its′seismic performance was analyzed.Compared with CFST-SBN,the seismic performance of the two is similar.The beam-column linear stiffness and the grade of steel have large influence on its′seismic performance,but the former has the greater influence on the bearing capacity and the energy dissipation capacity,of which the maximum difference is 169.3%and 29%,respectively.And the latter has the greater influence on the ductility,of which the maximum difference is 41.2%.The steel ratio,the width and the thickness of the inner stiffening ring have small influence on its′seismic performance,but they have obvious effects on its′ductility,energy dissipation capacity,yield and ultimate displacement,respectively.It can be concluded that the CFST-HBN is practicable and can meet the seismic design performance of“strong conlumn and weak beam”.

关 键 词：钢管混凝土柱 钢蜂窝梁 抗震性能 有限元 节点 

分 类 号：TU398[建筑科学—结构工程]