用钢筋混凝土薄膜元理论 ，建立了节点区受力分析的理论方法 ；
The theory of reinforced concrete membrane elements was used to develop a theoretical method for analyzing the behavior of beam column core regions.
在极限荷载作用下，钢筋混凝土板内常常存在有薄膜效应，它是由于板的各分块的边界条件和几何形状的变位而造成的。
Due to the boundary conditions and the geometric deformation under the ultimate load, the reinforced concrete slabs are usually subjected to membrane action.
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