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由于异形柱的截面形状与墙身一致,避免了结构柱在建筑平面中的外凸,增加了建筑可用面积,近年来在结构设计中应用日益广泛。文中运用自编的基于纤维模型柔度法非线性分析程序,对3座底层抽柱的异形柱钢筋混凝土空间框架进行了程序分析,并从骨架曲线和滞回曲线两个方面与试验结果进行了比较,表明骨架曲线计算与试验值吻合得很好,验证了基于纤维模型有限单元柔度法非线性分析程序适用于空间框架,而且对于抽柱的不规则结构也适用。
Because the cross-sectional shape of the special-shaped column is the same as the wall, the convexity of the structural column in the building plane is avoided, and the available area of the building is increased. In recent years, the application in the structural design has become increasingly widespread. In this paper, a self-designed nonlinear analysis program based on the flexibility of the fiber model is used to analyze the program of the reinforced concrete space frame with 3 specially shaped pillars. The results are obtained from two aspects of the skeleton curve and hysteresis curve and the test results. The comparison shows that the calculation of the skeleton curve is in good agreement with the experimental values. It is verified that the finite element flexibility method based on the fiber model is suitable for the space frame, and it is also applicable to the irregular structure of the column.