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本文论述了有关黄土湿陷的几个重要问题:(1)湿陷变形的主要特点及其研究方法;(2)湿陷的本构关系;(3)浸水强度与湿陷初始条件;(4)湿陷的塑性性质。木文还提出了湿化屈服的概念及其软硬化伴生的特点,指出了摩尔一库伦准则作为湿陷性黄土的浸水强度破坏条件和湿陷的初始条件的不合理性。根据三轴湿陷试验资料,建立了洛川黄土(Q_3)的湿陷本构方程和比较合理的和简单、实用的湿陷初始条件准则。
This paper discusses several important issues related to the collapsibility of loess: (1) the main features of collapsible deformation and its research methods; (2) the constitutive relationship of collapsibility; (3) the inundation strength and initial conditions of collapse; (4) ) Collapsible plasticity. Mu Wen also proposed the concept of hydration yield and its characteristics associated with soft-hardening, and pointed out the irrationality of the Mohr-Coulomb criterion as the condition of submergence strength damage and initial conditions of collapsible loess. Based on the triaxial collapsibility test data, the collapsible constitutive equations for the Luochuan loess (Q_3) and the reasonable and simple and practical conditions for the initial collapse conditions were established.