摘要
在分析深基坑排桩冻土墙围护结构的冻胀力产生机理的基础上,提出采用卸压孔法来减小水平冻胀力。通过数值模拟,得到了有、无卸压孔条件下排桩所受水平冻胀力的具体数值,同时,给出了水平冻胀力与冻土墙厚度的变化关系,从而为这种新型围护结构的工程应用提供了设计依据。结果表明,施工卸压孔可使排桩所受的水平冻胀力明显减小。
Based on the mechanism analysis of frost-heaving force emerging in the retaining structure with row-piles and frozen soil wall for deep foundation pit, releasing-pressure holes are used to reduce horizontal frost-heaving force. By numerical simulation, the values of horizontal frost-heaving force against row-piles are obtained in the condition with or without releasing-pressure holes. The results indicate that using releasing-pressure holes can sharply reduce the horizontal frost-heaving force against row-piles, and the relationship between horizontal frost-heaving force and thickness of frozen soil wall is given out. The research results can provide designing basis for engineering practice of the new type of retaining structure.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第9期1521-1524,共4页
Chinese Journal of Rock Mechanics and Engineering
