地球
地毬
지구
EARTH
2014年
11期
236-237
,共2页
季节性冻土%位移变化量%冻胀冻融%基坑安全%冻结深度
季節性凍土%位移變化量%凍脹凍融%基坑安全%凍結深度
계절성동토%위이변화량%동창동융%기갱안전%동결심도
Seasonal frozen soil%The displacement variation%Frost heaving and thawing.Foundation pit safety%Frozen depth
季节性冻土的冻胀冻融特性对基坑支护体系的安全有较大的影响。本文以黑龙江省鸡西市某桩锚支护基坑工程的变形监测资料为依据,重点对冻胀冻融期的基坑变形进行了分析研究。监测结果显示,在土中含水量相对更丰富的区域冻胀量越大,冻胀作用对冻结深度以下部位影响较小,预应力锚杆在冻胀期对维持基坑安全稳定性具有显著作用。
季節性凍土的凍脹凍融特性對基坑支護體繫的安全有較大的影響。本文以黑龍江省鷄西市某樁錨支護基坑工程的變形鑑測資料為依據,重點對凍脹凍融期的基坑變形進行瞭分析研究。鑑測結果顯示,在土中含水量相對更豐富的區域凍脹量越大,凍脹作用對凍結深度以下部位影響較小,預應力錨桿在凍脹期對維持基坑安全穩定性具有顯著作用。
계절성동토적동창동융특성대기갱지호체계적안전유교대적영향。본문이흑룡강성계서시모장묘지호기갱공정적변형감측자료위의거,중점대동창동융기적기갱변형진행료분석연구。감측결과현시,재토중함수량상대경봉부적구역동창량월대,동창작용대동결심도이하부위영향교소,예응력묘간재동창기대유지기갱안전은정성구유현저작용。
The frost heaving and thawing characteristics of the sea-sonal frozen soil have an great influence on the safety of foundation pit engineering.This paper mainly analyzes the deformation of foundation pit in the frost heaving period on the basis of the deformation monitor-ing data of a foundation pit engineering in Jixi City,Heilongjiang Province.The monitoring results show that it will have a larger amount of frost-heave capacity in the area of high water content, a small effect will be caused by the frost heaving below the frozen depth and the pre-stressed anchorage can play an important role in maintaining the stability of the foundation pit.