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在建筑学报1961年9期上,蒋莼秋同志提出了一个对挡土墙第二滑动面的图解法,由于所讨论的问题是主动土压力问题,采用库仑的滑动面为平面的假定,一般误差不大,是值得推荐使用的。为了进一步搞清文中的某些概念问题,笔者提出几点意见,与原文的作者商榷。(一)原文作图法只适用于φ=δ的情况,对φ(?)δ的情况是不能适用的。譬如β=0,α=45°,墙高h=10米,φ=30°,γ=1吨/米~3,求第二滑动面。如图1,δ=30°时,画如H_0α线,可
In the September 1961 issue of the Chinese Academy of Construction, Comrade Jiang Qiqiu proposed a graphic method for the second sliding surface of the retaining wall. Since the problem discussed is the active earth pressure problem, the Coulomb sliding surface is assumed to be flat, and the general error is not. Big, it is worth recommending. In order to further clarify certain conceptual issues in the article, the author puts forward several opinions and discusses with the original author. (1) The original drawing method is only applicable to the case of φ=δ, and it cannot be applied to the case of φ(?)δ. For example, β=0, α=45°, wall height h=10 meters, φ=30°, γ=1 ton/meter~3, seek the second sliding surface. As shown in Fig. 1, if δ = 30°, draw a line like H_0α.