冻胀

The study indicates that the frost heaving character of the meal sand is decimus of silt clays. And its frost heaving quotiety is seldom influenced by the different freezing end temperature and water content. Thus the surroundings influence is in the small area when the artificial freezing method is used in sand and no-stickiness soil.

研究结果表明粉砂冻胀率是淤泥质粘土冻胀率的十分之一，冷端温度、含水量两个因素变化对其冻胀率几乎不产生影响，因此在砂性等无粘性土中应用冻结法对周围环境危害较小。

This paper analyzes the causations of frost heaving of road and conformation building in cold area.

对寒冷地区出现的道路、构造物冻胀现象进行了分析，阐述了冻胀产生的原因，并提出了几项防止冻胀的措施。

This paper expounds the basic principles and basic features of the frost heaving of lined canal, and introduces the calculating method for the frost heaving resistant and the selection of the measures for frost heaving resistant .

阐述了衬砌渠道冻胀的基本原理及基本特征，介绍了衬砌渠道抗冻胀计算方法及防冻胀措施的选择。

When outside stresses counteract the momentum that is necessary to transfer the unfrozen water, frost heaving will no longer produce, and frost-heaving forces will no longer develop.

冻胀力的发展同时也取决于水分向冻结锋面的迁移量，当外压力抵消水分迁移所需要的动力时，此时冻胀不再产生，冻胀力也将不再发展。

The calculations show that the frost-heaving zone causes damage directly to an embankment, different sensitivity of frost-heaving zone will bring different damage, and the freezing zone under a pavement is a sensitive frost heaving zone.

结果表明：冻胀带的存在是引起路基病害的直接原因，不同冻胀带范围将引起路基产生不同类型及不同规模的破坏，位于路面以下的冻胀带属于敏感冻胀带范围。

In China,more and more constructions in cold regions appear,Strength and deformationof frozen soil,characteristics of frost heave and thaw collapse have become the major task forcold regional construction.But researches on mechanism of frost heaving are still not maturedowing to complexity of frozen soil,and the current study,thinking little of the freezing andthawing process,mostly focuses on the different physical and mechanical properties betweenfrozen soil and thawed soil.

随着我国寒区工程建设项目的增多，冻土的强度与变形问题以及冻胀融沉特性研究成为面临的最重要任务，但是由于冻土的复杂性，现有的冻胀机理相关研究尚不成熟，大多还是研究已冻土和融土物理力学性质差别，缺乏对正冻正融过程的相关研究。

The hydraulic loading system is developed and used to study the frost heaving characteristics of the subgrade soils under dynamic loading in closed system and open system . On the base of these work, the conclusions are as follows:1. Because of the the fine-grained fill, the frost deformations of Beijing-Baotou railway subgrade and Baotou-Lanzhou railway subgrade are holistically irregular, and great discrepancies exist among the frost heavings of subgrade at different sections.

本文根据冻害较严重的京包铁路、包兰铁路的气候、地质条件的调查和路基冻胀变形监测，结合路基土的性质对京包铁路、包兰铁路的冻害给出了评价；为了模拟振动荷载作用下土的冻胀，研制了液压动力加载系统；在室内采用实验方法对列车动荷载作用下包兰线路基粉质土在开敞、封闭系统下的冻胀特性进行模拟。

Non-uniform deformation of ground surface was often aroused by frost heave, so, controlling the formation and development of frost heave was always of great importance. The mechanism of using intermissive freezing method to control frost heave was dealt in this paper.

土体冻胀容易引起地表不均匀变形，因此控制冻胀的产生和发展是人工冻结技术应用中的重要课题，针对间歇冻结模式控制人工冻土冻胀的机理问题。

The conclusion provides the theoretical basis for applying appropriate restraining pressure to preventing frost heave in engineering field.

并不需要约束压力大到接近或等于&中断压力&的程度，而可以通过加筋或选择适当的结构形式提供约束压力使冻胀的土体向融土区的方向压缩，利用融土的压缩量抵消部分冻胀量，即可在约束压力较小的条件下，使建筑物发生的冻胀位移大大减小。

The fractal dimension can represent the complexity and the non-linear property of frost heave curve, which is important for understanding the process of frost heave on the aeolian soil.

分维体现了冻胀曲线的复杂性及非线性特征，这对进一步认识风积土的冻胀过程有着很重要的作用。关键词一维封闭冻结，风积土，冻胀曲线，分形

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。