魏雪英, 杨政, 于澍, 廖红建, 邵珠山. 用统一强度理论求解轴对称混凝土板的冲切强度[J]. 工程力学, 2002, 19(5): 92-96.
引用本文: 魏雪英, 杨政, 于澍, 廖红建, 邵珠山. 用统一强度理论求解轴对称混凝土板的冲切强度[J]. 工程力学, 2002, 19(5): 92-96.
WEI Xue-ying, YANG Zheng, YU Shu, LIAO Hong-jian, SHAO Zhu-shan. SOLUTION OF AXISYMMETRICAL PUNCHING STRENGTH OF CONCRETE SLABS WITH THE UNIFIED STRENGTH THEORY[J]. Engineering Mechanics, 2002, 19(5): 92-96.
Citation: WEI Xue-ying, YANG Zheng, YU Shu, LIAO Hong-jian, SHAO Zhu-shan. SOLUTION OF AXISYMMETRICAL PUNCHING STRENGTH OF CONCRETE SLABS WITH THE UNIFIED STRENGTH THEORY[J]. Engineering Mechanics, 2002, 19(5): 92-96.

用统一强度理论求解轴对称混凝土板的冲切强度

SOLUTION OF AXISYMMETRICAL PUNCHING STRENGTH OF CONCRETE SLABS WITH THE UNIFIED STRENGTH THEORY

  • 摘要: 本文采用统一强度理论作为混凝土的破坏准则,求解了轴对称混凝土板的冲切破坏强度,利用上限定理求出了一组破坏荷载,得出了强度理论参数b对冲切强度的影响曲线。所得的解可以考虑材料的中间主应力效应对冲切破坏强度的影响, 可以灵活地应用于工程上的各种不同材料, 公式形式简单便于应用, 且与已有结果及试验资料符合较好。

     

    Abstract: A theoretical solution of the punching shear strength of a concrete slab is obtained in this paper. The problem is treated as a three-dimensional axisymmetrical one, the material being assumed to be rigid-plastic. Yu's unified strength theory (UST) is used for the failure criterion of concrete. The UST can take account of the intermediate stress effect. By establishing the virtual work equation, a series of upper-bound of ultimate punching loads are obtained. The influence of variables, such as the size of loaded area and the coefficient b, on the ultimate punching load is investigated. The theoretical model is verified through comparison with Jiang-shen model and experimental results.

     

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