考虑滑移效应的钢-混凝土组合框架结构弹性地震响应分析  

Elastic Seismic Response Analysis of Steel-concrete Composite Frame Considering Slip Effect

作　　者：陈攀 戚菁菁[1] CHEN Pan;QI Jing-jing(College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

机构地区：[1]湖南科技大学土木工程学院,湘潭411201

出　　处：《湖南工程学院学报（自然科学版）》2020年第1期87-94,共8页Journal of Hunan Institute of Engineering(Natural Science Edition)

摘　　要：提出考虑滑移效应、楼板组合效应以及半刚性节点的组合框架梁单元刚度矩阵,运用MATLAB对组合框架进行弹性地震响应分析,研究了滑移效应、楼板空间组合效应以及半刚性节点连接对组合框架结构的自振特性和弹性地震响应的影响.通过改变组合框架梁刚度放大系数γ和剪力连接度τ的取值,研究这两个参数对组合框架的影响.数据分析结果表明:当γ<5时,界面滑移能够较大影响组合框架,当γ>5时,组合框架的位移幅值和频率变化都不大.组合框架的楼板空间组合效应在结构受力全过程始终存在,并且当τ>5时对组合框架的作用也更明显.The steel-concrete composite structure can fully exert the advantages of the two materials and form a combined structure with high strength,high rigidity and good ductility.In this paper,the stiffness matrix of the composite frame beam considering the slip effect,the slab combination effect and the semi-rigid joints are proposed.The elastic seismic response analysis of the composite frame is carried out by using MATLAB.The slip effect,the slab space combination effect,the effect the semi-rigid node connection pair on the self-vibration characteristics of the composite frame structure and the effects of elastic seismic response are studied.The influence of these two parameters on the combined frame is studied by changing the values of the stiffness amplification factorγand the shear connection degreeτof the composite frame beam.The results of data analysis show that at the time,the interface slip can greatly affect the combined frame.After that,the displacement amplitude and frequency of the combined frame do not change much.The slab space combination effect of the combined frame always exists in the whole process of structural stress,and the effect on the combined frame is more obvious whenτ>5.

关 键 词：半刚性 滑移效应 抗震 Matlab有限元 

分 类 号：X703.1[环境科学与工程—环境工程]