中文摘要：

提出将计算截面放置于结构中实现截面应力重分布分析的钢筋混凝土梁非线性网格模型方法,该方法不仅可以分别考虑梁的抗弯机制与抗剪机制,还可以描述钢筋混凝土浅梁和深梁从开裂至破坏的受力机理,从而实现钢筋混凝土梁的统一分析模型.算例结果表明,非线性网格模型不仅能较准确地计算结构的承载力,并且能清晰地反映结构受力机制,为设计分析提供依据.

英文摘要：

A reinforced concrete （RC） non-linear grid model method is established by inserting the calculation section into the structure to achieve the sectional stress redistribution analysis.It considers the flexure and shear mechanism respectively,and describes the behavior of RC slender and deep beams from the cracking to the failure.Thus,it realizes a unified analysis model for RC shallow and deep beams.Several examples illustrate the accuracy of the capacity calculation by the non-linear grid model method.The grid model method can also reflect the mechanical behavior of RC beams and provide design parameters.