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原作者持续不断地探索饱和非粘性土坝坡地震稳定性分析的合理方法,所做的努力显然将有助于这一课题的最终完善解决。原文提出了“比较强度最大发挥面上的应力条件法”,对我们很有启发,但也有些问题需要商讨。 1.原文提出以强度最大发挥面上的应力条件表示液化破坏程度,如果只是就“这个面上的强度得到最大发挥”这一点来看,似乎无可非议。但是,必须注意,原作者所说的都是总应力下的强度概念,而实际决定土体破坏与否的是有效应力强度。在往返荷载作用下,饱和非粘性土的强度仍然遵守有效应力的摩尔-库伦标准。因此,从有效应力的概念出发,以极限平衡面上的应力条件表示液化或破坏程度,似乎更为合理些。
The original author continued to explore reasonable methods for the analysis of seismic stability of saturated non-cohesive earth dam slopes, and the efforts made will obviously contribute to the final improvement of this subject. The original text puts forward the “Stress Condition on the Maximum Strength of the Face of Comparative Strength”. It is very inspiring to us, but there are also some issues that need to be discussed. 1. The text proposes that the degree of liquefaction damage is expressed by the stress conditions on the surface where the intensity is exerted. If it is only on the point that “the strength of this surface is maximized”, it seems to be beyond reproach. However, it must be noted that what the original author said is the concept of strength under total stress, and that the actual decision to destroy the soil is the effective stress intensity. The strength of saturated, non- cohesive soils still adheres to the Mohr-Coulomb criterion for effective stress under cyclic loading. Therefore, starting from the concept of effective stress, it seems more reasonable to express the degree of liquefaction or damage by stress conditions on the limit equilibrium surface.