拜读了本刊1985年第2期刊登的“混凝土局部承压强度及破坏机理”一文后,认为有以下几个问题值得讨论,现提出以供原文作者和其他对此专题有兴趣的同志参考。 1.关于局压区的应力变换 原文推导局压强度公式的一个主要步骤是借助摩尔圆将楔形体斜面(以下简称“楔面”)上σ和τ之间的关系转换为局压应力σ_1和对称面上的横向压应力σ_3之间的关系。由材料力学 After reading the article “Strength of Concrete Partial Compressive Strength and Failure Mechanism” published in the second issue of the magazine in 1985, the author believes that the following issues are worth discussing. Now it is proposed to refer to the original author and other comrades who are interested in this topic. 1. On the stress zone of the compression zone The original step of deriving the partial pressure strength formula is to convert the relationship between σ and τ on the slope of the wedge body (hereinafter referred to as the “wedge surface”) to the local compressive stress σ_1 with the aid of a molar circle. The relationship between the transverse compressive stress σ_3 on the plane of symmetry. Material mechanics