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首页 > 过刊浏览>2017年第45卷第12期 >1783-1790. DOI:10.11908/j.issn.0253-374x.2017.12.007
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桩筏基础固结沉降实用计算方法
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作者单位:

同济大学 地下建筑与工程系,上海 200092,同济大学 地下建筑与工程系,上海 200092

中图分类号:

TU473.1+2

基金项目:

国家自然科学基金项目（41372274）


Practical Method for Piled Raft Consolidation Settlement Calculation
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    摘要:

    针对饱和深厚黏土中的摩擦型桩筏基础，提出求解基础体系固结沉降的简化分析方法.采用桩土筏非线性共同作用模型和交替方向隐式差分算法求解二维平面应变区域内任意时刻不同位置的超孔隙水压力，计算桩端以下土层的平均固结度和基础体系的固结沉降.与有限元精确解的对比分析表明，提出的计算模型与简化假定基本合理.将该方法用于分析2个饱和黏土地基中的桩筏基础固结沉降，得到了与实测值比较接近的预测结果.

    Abstract:

    A practical method for calculating the consolidation settlement of frictional piled raft foundation in deep clay was presented. Nonlinear model considering pilesoilraft interaction and alternating direction implicit finite difference algorithm were adopted to solve excess pore water pressures at different positions in twodimensional plain strain domain, average consolidation degree of soil below pile tip and consolidation settlement of piled raft in any time. The results from comparison with the accurate solution of finite element method show that the proposed model and the simplified assumptions are basically reasonable. Finally the method was successfully applied to the consolidation settlement prediction of two pile raft cases in saturated clay.

    参考文献
    [1]程泽海, 凌道盛, 陈云敏. 桩筏基础在竖向荷载作用下的时间效应[J]. 土木工程学报, 2004, 37(2): 73–77.CHENG Zehai, LING Daosheng, CHEN Yunmin. Time effects on piled raft foundation under vertical loading[J]. China Civil Engineering Journal, 2004, 37(2): 73–77.
    [2]宰金珉, 戚科骏, 梅国雄, 等. 群桩-土-承台非线性共同作用固结过程分析[J]. 岩土力学, 2005, 16(1): 5–10.ZAI Jinmin, QI Kejun, MEI Guoxiong, et al. Analyses of nonlinear interaction of pile group-soil-raft considering soil consolidation[J]. Rock and Soil Mechanics, 2005, 16(1): 5–10.
    [3]崔春义, 栾茂田, 杨庆, 等. 结构-桩筏-地基体系时间效应的三维数值分析[J]. 岩土工程学报, 2007, 29(8): 1244–1250.CUI Chunyi, LUAN Maotian, YANG Qing, et al. 3D numerical analysis of time effect of superstructure-piled raft-foundation[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(8): 1244–1250.
    [4]栾茂田, 崔春义, 杨庆. 考虑流变与固结效应的桩筏基础-地基共同作用分析[J]. 岩土力学, 2008, 29(2): 289–295.LUAN Maotian, CUI Chunyi, YANG Qing. Analysis of interaction of piled raft and foundation considering both effects of soil rheology and foundation consolidation[J]. Rock and Soil Mechanics, 2008, 29(2): 289–295.
    [5]Small J C, Liu H L S. Time-settlement behaviour of piled raft foundations using infinite elements[J]. Computers and Geotechnics, 2008, 35(2): 187–195.
    [6]Sales M M, Small J C, Poulos H G. Compensated piled rafts in clayey soils: behaviour, measurements, and predictions[J]. Canadian Geotechnical Journal, 2010, 47(3): 327–345.
    [7]陈云敏, 程泽海, 凌道盛. 考虑固结过程的桩-土-筏三维相互作用分析[J]. 岩土工程学报, 2004, 26(5): 584–588.CHEN Yunmin, CHENG Zehai, LENG Daosheng. 3D interaction analysis of pile-soil-raft considering the consolidation of substratum[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(5): 584–588.
    [8]Yang Q, Leng W, Zhang S, et al. Long-term settlement prediction of high-speed railway bridge pile foundation[J]. Journal of Central South University, 2014, 21: 2415–2424.
    [9]Feng S, Wei L, He C, et al. A computational method for post-construction settlement of high-speed railway bridge pile foundation considering soil creep effect[J]. Journal of Central South University, 2014, 21: 2921–2927.
    [10]Davis E H, Poulos H G. Rate of settlement under two-and three-dimensional conditions[J]. Geotechnique, 1972, 22(1): 95–114.
    [11]Poulos H G, Carter J P, Small J C. Foundations and retaining structures-research and practice[C]. //Proceedings of the 15th ISCMGE. AA Balkema Publishers, 2002, 4: 2527–2606.
    [12]Mindlin R D. Force at a point in the interior of a semi‐infinite solid[J]. Journal of Applied Physics, 1936, 7(5): 195–202.
    [13]黄传志. 多维太沙基固结微分方程求解[J]. 岩土工程学报, 1991, 13(1): 34–47.
    [14]Lee J H, Kim Y, Jeong S. Three-dimensional analysis of bearing behavior of piled raft on soft clay[J]. Computers and Geotechnics, 2010, 37(1): 103–114.
    [15]Danno K, Kimura M. Evaluation of long-term displacements of pile foundation using coupled FEM and centrifuge model test[J]. Soils and foundations, 2009, 49(6): 941–958.
    [16]Kitiyodom P, Matsumoto T. A simplified analysis method for piled raft foundations in non-homogeneous soils[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2003, 27(2): 85–109.
    [17]Fraser R A, Wardle L J. Numerical analysis of rectangular rafts on layered foundations[J]. Geotechnique, 1976; 26(4): 613–630.
    [18]Chow Y K. Vertical deformation of rigid foundations of arbitrary shape on layered soil media[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1987, 11(1): 1–15.
    [19]Poulos H G, Davis E H. Pile foundation analysis and design[M]. New York: John Wiley and Sons, 1980.
    [20]Yamashita K, Tomono M, Kakurai M. A method for estimating immediate settlement of piles and pile groups[J]. Soils and Foundations, 1987, 27(1): 61–76.
    [21]Smith I M, Griffiths D V, Margetts L. Programming the finite element method[M]. New York: John Wiley and Sons, 2013.
    [22]Douglas J, Dupont T. Alternating-direction Galerkin Methods on Rectangles[C].//Proc. Symposium on Numerical Solution of Paritial Differential Quation. New York: Academic Press, 1971: 133–214.
    [23]曹名葆, 王德纯. 用应力路径法分析路堤的稳定性[J]. 土木工程学报, 1988, 21(1): 75–84.
    [24]张明, 赵有明, 刘国楠, 等. 双层砂井地基大变形固结方程差分解[J]. 岩土工程学报, 2013, 35(9): 1666–1674.ZHANG Ming, ZHAO Youming, LIU Guonan, et al. Finite difference solution to equation for large-strain consolidation of double-layered vertical drain ground[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(9): 1666–1674.
    [25]殷宗泽, 徐鸿江, 朱泽民. 饱和土平面固结问题有限单元法[J]. 华东水利学院学报, 1978, 1: 71–82.YIN Zongze, XU Hongjiang, ZHU Zemin. Finite element method for plane strain consolidation of saturated soils[J]. Journal of Hohai University (Natural Sciences), 1978, 1: 71–82.
    [26]Basile F. Non-linear analysis of vertically loaded piled rafts[J]. Computers and Geotechnics, 2015, 63: 73–82.
    [27]Hooper J A. Observations on the behaviour of a piled-raft foundation on London Clay[J]. Proceedings of the institution of civil engineers, 1973, 55(4): 855–877.
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杨军,杨敏.桩筏基础固结沉降实用计算方法[J].同济大学学报(自然科学版),2017,45(12):1783~1790

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  • 收稿日期:2017-02-08
  • 最后修改日期:2017-10-24
  • 录用日期:2017-10-09
  • 在线发布日期: 2017-12-29
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