冻土的强度是寒区工程中普遍关心的力学参数.研究表明,温度、含水量、应变速率和围压是影响冻土强度的主要因素,引用前人文献中的试验数据,分析了不同因素对冻土强度的影响规律;研究发现冻土的破坏形式与融土相似,然而其影响因素及机理不同;目前已有的冻土强度准则都是由融土的相关理论发展而来,但是由于涉及影响因素众多,强度准则尚待进一步研究改进. The strength of frozen soil is a common mechanical parameter concerned in the cold area engineering.The research shows that temperature, water content, strain rate and confining pressure are the main factors that influence the strength of frozen soil. By referring to the experimental data in previous literature, different factors It is found that the damage form of frozen soil is similar to thawed soil, however, the influencing factors and mechanism are different. At present, the existing strength criterion of frozen soil is developed from the related theory of thawed soil. However, Involving many factors, the strength of the guidelines yet to be further improved.