摘要
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。
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.
出处
《施工技术》
CAS
北大核心
2015年第7期83-86,共4页
Construction Technology
关键词
地下工程
深基坑
围护结构
监测
变形
数值模拟
underground
deep foundation excavation
retaining structure
monitoring
deformation
simulations
