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在我国干旱和半干旱的三北地区,冬季季节冻结层的潜水补给是造成建(构)筑物冻胀破坏的主要因素。当前,由于缺乏这方面的研究工作,在浅潜水地区的建设中,对于冻害问题,用封闭系统的一些研究成果,以及“主冻胀带”等一些概念,出现了一些问题。因此,研究浅潜水条件下,不同土壤的冻胀及其层次分布规律,对于正确处理浅潜水地基上建(构)筑物的防冻害问题,如基础浅埋、基土换填、隔水、排水等,都具有重要的实际意义。
In the north of the arid and semi-arid regions of China, the recharge of the frozen layer in the winter season is the main factor causing the frost heaving damage of the building (structure). At present, due to the lack of research work in this area, some problems have arisen in the construction of shallow-dive areas, such as the use of closed systems, and some concepts such as the “main frost heave zone” for freezing damage. Therefore, to study the frost heave and its layer distribution rules of different soils under shallow conditions, and to properly deal with the anti-freezing hazards of buildings (structures and structures) on shallow submerged ground, such as shallow foundations, soil replacement, water barriers, etc. Drainage, etc., have important practical significance.