一、地基土冻胀类别的确定正确评价地基土冻胀类别,是合理设计季节性冻土地基上基础埋深的重要条件之一。“TJ7—74”工业与民用建筑地基基础设计规范(以下简称“地规”)将地基土冻胀类别分为不冻胀、弱冻胀、冻胀及强冻胀四类,并提出了根据土的名称、天然含水量(W%)、冻结期间地下水位低于冻深的最小距离(米)来判别地基土冻胀类别的分类表(“地规” I. Determination of the type of frost heaving of foundation soil Correct evaluation of the category of frost heaving of foundation soil is one of the important conditions for the rational design of the foundation buried depth of seasonal frozen ground. The “TJ7-74” design code for foundations for industrial and civil buildings (hereinafter referred to as “landmarks”) classifies the category of frost heaving of foundation soils into four types: frost heaving, weak frost heave, frost heaving, and heavy frost heave, and proposes Names of soil, natural water content (W%), and the minimum distance (m) of the groundwater level during the freezing period below the freezing depth are used to determine the classification table of the type of ground soil frost heaving (“Regulation”)