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采用双剪应力三参数强度准则和刚塑性模型 ,对混凝土板轴对称冲切强度进行了分析 ,给出了轴对称破坏机构 ,得到极限应力圆的包络线为二条直线 ,利用虚功原理求得破坏荷载的上限。公式形式简洁 ,与已有结果相比符合较好。
The double-shear stress three-parameter strength criterion and the rigid-plastic model are used to analyze the axial symmetrical punching strength of concrete slab. The axisymmetric rupture mechanism is given. The envelope of the ultimate stress circle is two straight lines. Using the principle of virtual work To break the load ceiling. Formula form is concise, compared with the existing results in line with good.