基于不同地质大跨深基坑变形特征与控制研究
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摘要
随着东部沿海城市的超快速发展,城市地铁隧道区间不断在近海岸开工建设,由于近海岸地层以淤泥质黏土为主,如若处理不当,很容易导致基坑的坍塌与破坏。因此,在深圳地铁基坑工程的基础上,用ABAQUS数值计算分析方法,在对地铁区间复杂的基坑周边环境进行分析后,将研究的主要内容放在淤泥质黏土地层对基坑建设的影响上,同时类比在岩石和黏土的土质条件下的变形特征。
With the rapid development of the eastern coastal cities,the urban subway tunnel section is continuously under construction on the near coast. Because the coastalcoastal strata are mainly silty clay,if it is not properly handled,it will easily lead to the collapse and destruction of the foundation pit. Therefore,based on the foundation pit engineering of Shenzhen Metro,this paper uses the numerical calculation method of ABAQUS to analyze the surrounding environment of the complex pit in the subway area,and then put the main content of the research into the construction of the foundation pit in the silty clay stratum. The effect is,at the same time,analogous to the deformation characteristics of the rock and clay soil conditions.
With the rapid development of the eastern coastal cities,the urban subway tunnel section is continuously under construction on the near coast. Because the coastalcoastal strata are mainly silty clay,if it is not properly handled,it will easily lead to the collapse and destruction of the foundation pit. Therefore,based on the foundation pit engineering of Shenzhen Metro,this paper uses the numerical calculation method of ABAQUS to analyze the surrounding environment of the complex pit in the subway area,and then put the main content of the research into the construction of the foundation pit in the silty clay stratum. The effect is,at the same time,analogous to the deformation characteristics of the rock and clay soil conditions.
引文
[1]张跃进,曾纪文.深厚淤泥层基坑开挖动态监测与应急处理[J].资源环境与工程,2014,36(6):90-95.
[2]吴继成,袁顺德.深圳地铁五号线海积淤泥地层基坑围护桩插入深度的研究[J].路基工程,2012,30(1):79-81.
[3]Yongfen R,Ye L.determination of deep foundationpit supporting scheme by using the gray system theory and method[J].Chinese Journal of Rock Mechanics&Engineering,2003,22(7):1203-1206.
[4]Tan Y,Wang D.Characteristics of a Large-Scale Deep Foundation Pit Excavated by the Central-Island Technique in Shanghai Soft Clay.II:Top-Down Construction of the Peripheral Rectangular Pit[J].Journal of Geotechnical&Geoenvironmental Engineering,2013,139(11):1894-1910.
[5]Shu J,Ding C,Zhang S.A Study on Deformation Regularity of Deep Foundation Pit for Metro Station near the River[J].Journal of East China Jiaotong University,2011(5).
[6]张蕾.地铁深基坑施工引起的既有建筑物沉降分析[J].城市轨道交通研究,2004,7(5):38-41.
[7]Liang J.Application of soil nail with steel pipe in foundation pit support[J].Shanxi Architecture,2011,17(7):465-477.
[8]Zhou N,Vermeer P A,Lou R,et al.Numerical simulation of deep foundation pit dewatering and optimization of controlling land subsidence[J].Engineering Geology,2010,114(3-4):251-260.
[9]Tan Y,Wang D.Characteristics of a Large-Scale Deep Foundation Pit Excavated by the Central-Island Technique in Shanghai Soft Clay.II:Top-Down Construction of the Peripheral Rectangular Pit[J].Journal of Geotechnical&Geoenvironmental Engineering,2013,139(11):1894-1910.
[10]王明明,李忠雨,翟树起,等.天津滨海地区海相淤泥质软土基坑开挖及坑底加固技术[J].施工技术,2008,38(9):14-15.
[11]Jiang A N,Guan W.Deformation monitoring and analysis on construction of metro under complicated geological conditions in Dalian[J].Journal of Dalian Maritime University,2014,40(1):128-132.
[12]Hsieh P G,Kung T C,Ou C Y,et al.Deep Excavation Analysis withConsideration of Small Strain Modulus and its Degradation Behavior of Clay[C]∥Proceedings of the 12th Asian Regional Conference on SoilMechanics and Geotechnical Engineering,Singapore:2003,785-833.
[2]吴继成,袁顺德.深圳地铁五号线海积淤泥地层基坑围护桩插入深度的研究[J].路基工程,2012,30(1):79-81.
[3]Yongfen R,Ye L.determination of deep foundationpit supporting scheme by using the gray system theory and method[J].Chinese Journal of Rock Mechanics&Engineering,2003,22(7):1203-1206.
[4]Tan Y,Wang D.Characteristics of a Large-Scale Deep Foundation Pit Excavated by the Central-Island Technique in Shanghai Soft Clay.II:Top-Down Construction of the Peripheral Rectangular Pit[J].Journal of Geotechnical&Geoenvironmental Engineering,2013,139(11):1894-1910.
[5]Shu J,Ding C,Zhang S.A Study on Deformation Regularity of Deep Foundation Pit for Metro Station near the River[J].Journal of East China Jiaotong University,2011(5).
[6]张蕾.地铁深基坑施工引起的既有建筑物沉降分析[J].城市轨道交通研究,2004,7(5):38-41.
[7]Liang J.Application of soil nail with steel pipe in foundation pit support[J].Shanxi Architecture,2011,17(7):465-477.
[8]Zhou N,Vermeer P A,Lou R,et al.Numerical simulation of deep foundation pit dewatering and optimization of controlling land subsidence[J].Engineering Geology,2010,114(3-4):251-260.
[9]Tan Y,Wang D.Characteristics of a Large-Scale Deep Foundation Pit Excavated by the Central-Island Technique in Shanghai Soft Clay.II:Top-Down Construction of the Peripheral Rectangular Pit[J].Journal of Geotechnical&Geoenvironmental Engineering,2013,139(11):1894-1910.
[10]王明明,李忠雨,翟树起,等.天津滨海地区海相淤泥质软土基坑开挖及坑底加固技术[J].施工技术,2008,38(9):14-15.
[11]Jiang A N,Guan W.Deformation monitoring and analysis on construction of metro under complicated geological conditions in Dalian[J].Journal of Dalian Maritime University,2014,40(1):128-132.
[12]Hsieh P G,Kung T C,Ou C Y,et al.Deep Excavation Analysis withConsideration of Small Strain Modulus and its Degradation Behavior of Clay[C]∥Proceedings of the 12th Asian Regional Conference on SoilMechanics and Geotechnical Engineering,Singapore:2003,785-833.