钢筋混凝土圆球壳基于双剪屈服准则无矩理论的极限分析

Limitation Analysis for Spherical Shell of Reinforced Concrete Based on the Twin Shear Stress Yield Criterion

利用已建立的基于双剪屈服准则的钢筋混凝土壳体的屈服条件,研究了圆球壳屈服时无矩理论下内力状态,导出了壳体各区域的本构关系和塑性屈服条件,并用机动法和静力平衡法计算了圆球壳在竖向均布载下的极限载荷。计算结果与用已有的塑性屈服线理论计算结果相符。

The internal force states of the spherical shell under nonmomental assumption is analyzed following the twin shear stress yield criterion. The constitutive relation and plasticity yield condition of each zone in the shell are then derived. And the limitary loads of the circular spherical shell under the normally distributed load to verify the plastic yield line theory.