【摘要】 基于广义强度准则,提出了一种评价地基土换填抗冻胀能力的新方法。将冻胀力作为外载荷考虑,将冻土缺陷考虑为裂纹,并把冻土断裂韧度作为重要因素引进新准则。通过一个挡墙基础的算例,对换填前后的稳定性和强度进行了分析,与传统方法相比,由于考虑了更多的因素,从而更加合理。更多还原

【Abstract】 Based on a generalized strength criterion, a new method is presented to evaluate the ability of antifrost-heave ability via the replacement of ground soil. Compared with the conventional methods, the criterion proposed is more reasonable since more factors are taken into account. The frost-heave force is considered as a kind of external load, and the defects of frozen soil are treated as cracks. The toughness of frozen soil, as an important factor, is introduced in the new criterion. A numerical example of a retaining wall is given to analyze the stability and strength before and after replacement.更多还原