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考虑土拱效应的路堤荷载下刚性桩复合地基应力与沉降计算方法

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Keywords: 道路工程,路堤荷载,土拱效应,刚性桩复合地基,Mindlin和Boussinesq联合求解法,桩土相互作用

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Abstract:

将路堤填土和刚性桩复合地基加固区、下卧层作为一个整体考虑,取路堤中心处一单桩加固单元为研究对象,设定桩土荷载分担比和桩侧摩阻力分布形式初值,运用Mindlin和Boussinesq联合求解法计算内外土柱应力和沉降,根据路堤与复合地基表面交界处位移连续条件,迭代求得实际侧摩阻力分布。建立的复合地基的桩土荷载分担与桩土相互作用的耦合模型具有较严密的理论基础,解决了M&B联合求解法需要预先已知桩土应力比以及桩侧摩阻力分布形式的问题,计算得到的桩土荷载分担、桩土沉降与工程监测数据较为吻合,验证了模型的正确性。

References

[1]  龚晓南.广义复合地基理论及工程应用[J].岩土工 程学报,2007 , 29(1):1一13. GONG Xiao-nan. Generalized Composite Foundation Theory and Engineering Application[J]. Chinese Journal of Geotechnical Engineering, 2007,29(1):1一13.
[2]  张忠苗桩基工程[M].北京:中国建筑工业出版 社,2007. ZHANG Zhong-miao. Pile Foundation Engineering[M]. Beijing: China Architecture&Building Press,2007.
[3]  邱钮,钱国超,刘松玉.粉喷桩处理高速公路软土地 基内附加应力及沉降计算分析[J].公路交通科技, 2001,18(1):1一5. QIU Yu, QIAN Guo-chao, LIOU Song-yu. DJM Pile Treated Soft Clay Foundation on Express Highway The Analysis of the Additional Stress in Composite Foundation and the Settlement of Composite Foundation[J] . Journal of Highway and Transportation Research and Development, 2001,18(1):1一5.
[4]  张忠苗,陈洪,吴慧明.柔性承台下复合地基应力和 沉降计算研究[J].岩土力学,2004 , 25 (3 ): 451一454. ZHANG Zhong-miao, CHEN Hong, WU Hui-ming. Research on Stress and Settlement of Composite Ground with Soft Base Slab[J].Rock and Soil Mechanics, 2004,25(3):451一454.
[5]  张敏静.路堤荷载下复合地基桩土相互作用特性及沉降计算方法研究[D].成都:西南交通大学,2011: 195一202. ZHANG Min-jing. Research on Pile-soil Interaction Characters and Settlement Calculation Method of Composite Foundation under Embankment Load[D].Chengdu: Southwest Jiaotong University, 2011:195一202.
[6]  刘吉福.路堤下复合地基桩、土应力比分析[J].岩 石力学与工程学报,2003, 22 (4):674一677. LIU Ji-fu. Analysis on Pile-soil Stress Ratio for Composite Ground under Embankment[J] . Chinese Journal of Rock Mechanics and Engineering, 2003,22 (4): 674一677.
[7]  张浩,石名磊,张瑞坤.桩承式灰土路堤基底荷载效 应分析[J].公路交通科技,2011, 28 (6):25一31. ZHANG Hao, SHI Ming-lei,ZHANG Rui-kun. Analysis on Load Action Effect of Subgrade in Pile Supported Lime- soil Embankment[J].Journal of Highway and Transportation Research and Development, 2011,28 (6):25一31.
[8]  GEDDES J D. Stress in Foundation Soils due to Vertical Subsurface Load [J].Geotechnique, 1996 (16):231一155.
[9]  MTNDLIN R D. Farce at a Paint in the Interior of a Semi- infinite Solid [J] . Physics,1936,7 (5):195.
[10]  ALAMGIR M,MIURA N,POOROOSHASB H B,et al.Deformation Analysis of soft Ground Reinforced by Columnar Inclusions [J].Computers and Geotechnics, 1996,18 (4):2667一2690.
[11]  杨涛.复合地基沉降计算理论、位移反分析模型和二 灰土桩软基加固试验研究[D].南京:河海大 学,1997. YANG Tao. Experimental Study on the Calculation Theory of Settlement of Composite Foundation, Back Analysis Model of Displacement and Pile-soil Soft Foundation Reinforcement[D]. Nanjing: Hohai University, 1997.
[12]  李海芳,温晓贵,龚晓南.路堤荷载下复合地基加固 区压缩量的解析算法[J].土木工程学报,2005, 38 (3):76一80. LI Hai-fang, WEN Xiao-gui, GONG Xiao-nan. Analytical-function for Compressive Deformation of Stabilized Layer in Composite Foundation under Load of Embankment[J]. China Civil Engineering Journal, 2005, 38(3):76一80.
[13]  徐立新.桩承式加筋路堤的设计计算方法研究[D]. 杭州:浙江大学,2007. XU Li-xin. Study on Design and Computation Method of Geosythetic Reinforced Pile-supported Embankments[D]. Hangzhou:Zhejiang University, 2007.

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