在纬度高的寒冷地区，当土壤含水量过高时，由于土壤结冻膨胀而升起，连带植物抬起。至春季解冻时，土壤下沉而植物留在原位造成植物根部裸露死亡。
v. heaving
misc. lifting by frost ; frost heaving ; soil-lifting frost
针对扩大式桩基础的特点，提出了其抗冻拔的设计与校核方法。
This article discusses the characteristic of spread pile foundation and proposes the design against freeze and method of checking.
对桩基冻拔的冻土工程问题进行了断裂力学分析，并给出简化模型。
A frozen soil engineering problem of pile foundation uplift, is analyzed using fracture mechanics method, and a simplified model for calculation the stability of pile foundation uplift is presented.
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