2015年4月上 施工技术 第44卷第7期 CONSTRUCTION TECHNOLOGY 83 D0I:10.7672/5j52015070083 深基坑围护结构变形监测与数值模拟分析 万志辉，刘红艳，步艳洁 (辽宁工业大学土木建筑工程学院，辽宁锦州121001) [摘要]以某深基坑工程为研究对象，采用有限差分软件FLAC3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. [关键词]地下工程；深基坑；围护结构；监测；变形；数值模拟 [中图分类号]TU753 [文献标识码]A[文章编号]1002-8498(2015)07-0083-04 Analysis of Deformation Monitoring and Numerical Simulation on Retaining Structure of Deep Foundation Excavation Wan Zhihui Liu Hongyan Bu Yanjie (School of Ciuvil and Architectural Engineering Liaoning University of Technology Jinzhou Liaoning 121001 China) Abstract:This paper used FLAC 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 pared 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 inereasing the embedded depth of retaining structure can effeetively 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 disp...
深基坑围护结构变形监测与数值模拟分析.pdf
