轴向拉力作用下钢框架与混凝土核心筒之间钢梁传力系数实用计算方法

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英文篇名：Practical calculation method research on axial tensile force transfer coefficient of steel beams at joints connecting steel frame and concrete core tube 中文刊名：建筑结构 英文刊名：Building Structure 作者：李国强 ; 李亮 ; 李武波 英文作者：Li Guoqiang~(1 ; 2) ; Li Liang~2 ; Li Wubo~2(1 State Key Laboratory for Disaster Mitigation in Civil Engineering ; Tongji University ; Shanghai 200092 ; China ; 2 Department of Building Engineering ; Tongji University ; Shanghai 200092 ; China) 中文关键词：剪切变形 ; 混凝土核心筒 ; 组合梁 ; 反复轴力 英文关键词：shear deformation ; concrete core tube ; composite beam ; repeated axial force 出版日期：2010-03-25 机构：同济大学土木工程防灾国家重点实验室;同济大学建筑工程系; 年：2010 期：03 出版单位：建筑结构

摘要

在水平荷载作用下,钢框架以剪切变形为主,混凝土核心筒以弯曲变形为主;楼板和钢梁构成的组合梁将钢框架和核心筒连接起来迫使其协同工作,在组合梁内将产生反复轴力作用。利用有限元软件ANSYS对选取的可能影响钢梁和楼板拉力分配关系的6个参数进行分析,并对分析结果进行拟合,得到了钢梁传力系数的实用计算公式,经与有限元计算结果对比,证明该公式计算结果略偏于安全,对大多数工程可满足工程精度要求。
Under the lateral force,the main deformation of steel frame is shear deformation,and the main deformation of concrete core tube is bending deformation.The steel frame and core tube are connected by composite beams to work together,and repeated axial forces would be created within the composite beams.Analyses are performed to research six selected parameters which may effect the axial tensile force transfer coefficient of steel beams at joints connecting steel frame and concrete core tube by ANSYS.The comparisons between the results of practical calculation formulas and finite element analysis are made to show that the results of the practical calculation formulas are lean to security,and could meet the requirements of engineering precision for most projects.

引文

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