【摘要】 采用有限元软件建模对钢管约束混凝土纯弯构件的荷载-变形关系进行了计算,计算结果分别得到了两个圆形及两个方形构件试验结果的验证。在此基础上,利用有限元方法对钢管约束混凝土纯弯构件受力过程中钢管及核心混凝土之间的相互作用以及构件的荷载-变形关系进行了分析,最后探讨了钢管约束混凝土纯弯构件抗弯承载力的实用计算方法。更多还原

【Abstract】 The load versus deformation curves of steel tube confined concere members under pure bending are carried out using finite element analysis. The calculated results are verified by test results from two circular and two square specimens, and reasonable agreement is demonstrated. The finite element analysis modelling is then used to analyze the load versus deformation relationships, and to investigate the composite action between the steel tube and concrete core. A simple formula for calculating the ultimate strength of the composite members under pure bending is recommended.更多还原