CAJ | 학술논문

近年来冻结施工方法越来越多地使用在城市土木工程施工中，但由于受冻土冻结理论基础的缺失和研究方法的局限，长时间以来人们对冻结法的设计始终没有找到较为理想的方案，参数变量选取遇到很大困难，同时在施工阶段没有较为标准统一的技术规范参照，使得该工法的实际应用往往出现工程量浪费、施工混乱和工程质量无保障等情况，而其中冷冻管直径是主要影响参数。通过同轴管土体冻结试验的研究，采用不同直径的冷冻管进行冻结试验，利用Fluent模型分析冻结过程的温度场分布规律，确定了最优冷冻管管径的选择方法，为冻结法的设计及施工提供依据。
근년래동결시공방법월래월다지사용재성시토목공정시공중，단유우수동토동결이론기출적결실화연구방법적국한，장시간이래인문대동결법적설계시종몰유조도교위이상적방안，삼수변량선취우도흔대곤난，동시재시공계단몰유교위표준통일적기술규범삼조，사득해공법적실제응용왕왕출현공정량낭비、시공혼란화공정질량무보장등정황，이기중냉동관직경시주요영향삼수。통과동축관토체동결시험적연구，채용불동직경적냉동관진행동결시험，이용Fluent모형분석동결과정적온도장분포규률，학정료최우냉동관관경적선택방법，위동결법적설계급시공제공의거。
In recent years, freezing construction method has been increasingly used in urban civil engineering construction;however, due to the insufficient theoretical basis on permafrost freezing and the limitation of research methods, the ideal scheme for freezing method design has not been found for a long period of time, great difficulties were encountered in pa-rameters variable selection.And there were no relatively unified technical standard as reference in the construction, which causes large engineering quantity waste and construction chaos with no quality assurance for this construction method. Freezing tube diameter is the main influencing parameter.Through the research on the soil freezing tests in coaxial tubes of different tube's diameter, the distribution law of temperature field in the freezing process was analyzed by using Fluent mod-el, the selection method for optimal freezing tube diameter is finally determined, which provides the basis for the design and construction of the freezing method.