【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。更多还原

【Abstract】 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.更多还原