切向冻胀力的研究现状及展望

Study of the tangential frost heaving force:status and prospects

土体冻胀产生的切向冻胀力是制约寒区基础工程建设和使用年限的主要原因,同时也是基础设计中的一个重要参数,深入研究切向冻胀力问题意义重大。通过回顾国内外相关文献,对切向冻胀力目前的研究现状进行了总结:从切向冻胀力产生的条件和过程角度出发,详细描述了切向冻胀力产生发展的机理;阐述了影响切向冻胀力的因素和切向冻胀力的分布规律;从试验、理论两方面入手,简要总结了切向冻胀力的测试方法和理论计算方法;简述了目前确定切向冻胀力取值的方法。最后,对切向冻胀力未来的研究方向提出了展望。

In cold regions,the construction and service life of foundation engineering are restricted by tangential frost heaving force,one of the key parameters in design of foundations.Therefore,it is significant to study the tangential frost heaving force in depth.In this paper,the current research status of tangential frost heaving force was summarized by reviewing relevant literature at home and abroad.The development mechanism of tangential frost heaving force was described in details in terms of the conditions and process of tangential frost stress;the influence factors and the distribution laws of the tangential frost heaving force were also represented briefly.Starting with the experiment and theory,the test methods and theoretical calculation methods of tangential frost heaving force were expounded,and how to determine the value of tangential frost heaving force was also stated.This review also put forward prospects for the future research of tangential frost heaving force.