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路堤荷载下钉形搅拌桩复合地基沉降特性

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Keywords: 道路工程,复合地基,现场试验,钉形搅拌桩,沉降,数值模拟

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Abstract:

?通过现场试验对比分析了钉形搅拌桩和常规搅拌桩复合地基的路中心分层沉降,并通过三维数值模拟分析了复合地基设计参数对路堤荷载下钉形搅拌桩复合地基沉降的影响。现场试验结果表明:相对于常规搅拌桩复合地基,由于扩大头作用和较高的桩身质量,钉形搅拌桩复合地基中更多的荷载通过桩体传递到下卧层,有效减小了加固区的沉降,但下卧层的沉降有所增加;由于下卧层土质较好,其地表总沉降小于常规搅拌桩复合地基。数值模拟结果表明:扩大头高度、桩长、桩间距和桩身模量是影响地表总沉降的主要因素;扩大头直径、桩间距和桩身模量是影响地表桩土相对沉降的主要因素,提高扩大头高度能有效减小地表总沉降;提高扩大头直径能有效减小地表桩土相对沉降。

References

[1]  TERASHI M.The State of Practice in Deep Mixing Methods[C]//LAWRENCE F J,DONALD A B,MICHAEL J B.3rd International Specialty Conference on Grouting and Ground Treatment.New Orleans:ASCE,2003:25-49.
[2]  王东阳,陈淑贤.润扬大桥北接线深层搅拌桩加固地基研究[J].长安大学学报:建筑与环境科学版,2004,21(4):7-10.
[3]  李秋苗,闫 明.水泥土搅拌桩质量及复合地基承载力研究[J].长安大学学报:建筑与环境科学版,2004,21(4):11-13.
[4]  苏天明,李晓昭,张 迪,等.水泥土深层搅拌桩测试方法和计算原理[J].长安大学学报:自然科学版,2003,23(3):47-49.
[5]  SU Tian-ming,LI Xiao-zhao,ZHANG Di,et al.Method and Calculation Principle of Long Cement Mixing Piles[J].Journal of Chang'an University:Natural Science Edition,2003,23(3):47-49.
[6]  LI Hai-shen,LIN Lin,ZOU Yin-sheng.Analysis of Function of Soil-cement Mixing Piles Composite Soil Nailing by Small Pre-stress[J].Journal of Architecture and Civil Engineering,2005,22(1):91-94.
[7]  LIU Song-yu,QIAN Guo-chao,ZHANG Ding-wen.The Principle and Application of Dry Jet Mixing Composite Foundation[M].Beijing:China Architecture & Building Press,2006.
[8]  LIU Song-yu,YI Yao-lin,ZHU Zhi-duo.Comparison Test on Field Tests on Bidirectional Mixing Column for Soft Ground Improvement in Expressway[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(11):2272-2280.
[9]  LIU Song-yu,CHU Hai-yan,GONG Neng-he,et al.Automatic Spreading Blade:China,200520077017[P].2007-05-02.
[10]  易耀林,刘松玉,杜延军.路堤下钉形搅拌桩复合地基附加应力扩散特性[J].中国公路学报,2009,22(5):8-14.
[11]  陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008.
[12]  易耀林.路堤荷载下钉形搅拌桩复合地基变形特性研究[D].南京:东南大学,2008.
[13]  刘松玉,宫能和,冯锦林,等.钉形水泥土搅拌桩操作方法:中国,200410065863[P].2007-09-12.
[14]  LIU Song-yu,GONG Neng-he,FENG Jin-lin,et al.Installation Method of T-shaped Soil-cement Deep Mixed Column:China,200410065863[P].2007-09-12.
[15]  Coastal Development Institute of Technology.The Deep Mixing Method-Principle,Design and Construction[M].Rotterdam:Balkema A A,2002.
[16]  WANG Dong-yang,CHEN Shu-xian.Study on Groundwork Reinforced by Deep Mix Round Pile of Runyang Large Bridge's North-line[J].Journal of Chang'an University:Arch & Envir Science Edition,2004,21(4):7-10.
[17]  LI Qiu-miao,YAN Ming.Experimental Study of Quality on Cement-soil Pile Compound Foundation[J].Journal of Chang'an University:Arch & Envir Science Edition,2004,21(4):11-13.
[18]  李海深,林 琳,邹银生.微预应力作用下搅拌桩复合型土钉支护的性状分析[J].建筑科学与工程学报,2005,22(1):91-94.
[19]  刘松玉,钱国超,章定文.粉喷桩复合地基理论与工程应用[M].北京:中国建筑工业出版社,2006.
[20]  刘松玉,易耀林,朱志铎.双向搅拌桩加固高速公路软土地基现场对比试验研究[J].岩石力学与工程学报,2008,27(11):2272-2280.
[21]  刘松玉,储海岩,宫能和,等.多功能自动扩径钻头:中国,200520077017[P].2007-05-02.
[22]  LIU S Y,ZHANG D W,ZHU Z D.On the Uniform-ity of Deep Mixed Soil-cement Columns with Electric-al Resistivity Method[C]//HAN J,ZHENG G,SCHAEFER V R,et al.Proceedings of U.S.-China Workshop on Ground Improvement Technologies.Orlando:ASCE Geotechnical Special Publication,2009:140-149.
[23]  YI Yao-lin,LIU Song-yu,DU Yan-jun.Additional Stress Distribution Behavior of T-shaped Deep Mixed Column Composite Foundation Under Embankment Load[J].China Journal of Highway and Transport,2009,22(5):8-14.
[24]  CHEN Yu-min,XU Ding-ping.FLAC/FLAC3D Foundation and Case[M].Beijing:China Water Conservancy and Electric Power Press,2008.
[25]  YI Yao-lin.Deformation Behavior of T-shaped Deep Mixed Column Composite Foundation Under Embankment Load[D].Nanjing:Southeast University,2008.

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