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土的冻胀是各种构筑物产生冻害的根本原因。在按第二极限状态进行构筑物的设计时,比较准确地估算工程地段地基上的冻胀量,则是确定构筑物是否需要采取防冻害措施和采取到何种程度的重要依据。由于水分迁移和冰析出理论的复杂性,目前还未能得出在实际运用中准确而可靠的理论计算方法。笔者从收集到的室内外冻胀试验资料出发,提出冻胀量简易估算方法。
The frost heave of the soil is the root cause of the freezing damage caused by various structures. When the design of the structure is performed in the second limit state, the amount of frost heave on the foundation of the engineering section is relatively accurately estimated, which is an important basis for determining whether the structure needs to take anti-freezing and freezing measures and to what extent. Due to the complexity of the moisture migration and ice precipitation theory, it has not yet been possible to derive an accurate and reliable theoretical calculation method in practical use. The author starts with the collected indoor and outdoor frost heave test data and proposes a simple estimation method for frost heaving amount.