施工技术
施工技術
시공기술
CONSTRUCTION TECHNOLOGY
2015年
7期
83-86
,共4页
地下工程%深基坑%围护结构%监测%变形%数值模拟
地下工程%深基坑%圍護結構%鑑測%變形%數值模擬
지하공정%심기갱%위호결구%감측%변형%수치모의
underground%deep foundation excavation%retaining structure%monitoring%deformation%simulations
以某深基坑工程为研究对象，采用有限差分软件FLAC3D对该深基坑围护结构施工过程进行数值模拟，并将计算结果与监测结果进行对比分析。采用建立的计算模型，按单因素分析方法对深基坑围护结构变形的影响因素进行分析。结果表明，增加围护结构的入土深度可以有效减小其侧移值，但围护结构入土深度满足基坑变形稳定性要求后，继续增加入土深度对控制其侧移的效果并不明显；随着土体的弹性模量和内摩擦角的增大，围护结构的侧移明显减小。
以某深基坑工程為研究對象，採用有限差分軟件FLAC3D對該深基坑圍護結構施工過程進行數值模擬，併將計算結果與鑑測結果進行對比分析。採用建立的計算模型，按單因素分析方法對深基坑圍護結構變形的影響因素進行分析。結果錶明，增加圍護結構的入土深度可以有效減小其側移值，但圍護結構入土深度滿足基坑變形穩定性要求後，繼續增加入土深度對控製其側移的效果併不明顯；隨著土體的彈性模量和內摩抆角的增大，圍護結構的側移明顯減小。
이모심기갱공정위연구대상，채용유한차분연건FLAC3D대해심기갱위호결구시공과정진행수치모의，병장계산결과여감측결과진행대비분석。채용건립적계산모형，안단인소분석방법대심기갱위호결구변형적영향인소진행분석。결과표명，증가위호결구적입토심도가이유효감소기측이치，단위호결구입토심도만족기갱변형은정성요구후，계속증가입토심도대공제기측이적효과병불명현；수착토체적탄성모량화내마찰각적증대，위호결구적측이명현감소。
This paper used FLAC3D to simulate numerically retaining structure of deep foundation construction process by taking a deep foundation excavation engineering as object. Meanwhile, analysis was made from its results compared with monitoring data. The influence factor of retaining structure of deep foundation excavation deformation was analyzed by single factor analysis using established calculation model. The results indicated that increasing the embedded depth of retaining structure can effectively reduce its lateral displacement. However, when the embedded depth of retaining structure satisfied the requirement of deformation stability, the effect was not obvious as continue to increase the embedded depth. As the elastic modulus increased and angel of internal friction of soil expanded, the lateral displacement of retaining structure reduced obviously.
