Theoretical Calculation of Settlement of Soil-cement Pile Composite Ground under Embankment

陈甦; 将玉军; 魏琛宇; 陈国兴

doi:10.13409/j.cnki.jdpme.2012.05.014

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Theoretical Calculation of Settlement of Soil-cement Pile Composite Ground under Embankment

更新时间：2025-12-11

- Theoretical Calculation of Settlement of Soil-cement Pile Composite Ground under Embankment
- Vol. 32, Issue 5, Pages: 579-584(2012)
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- DOI：10.13409/j.cnki.jdpme.2012.05.014
  CLC： 416.1
- Published：2012
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[1]陈甦,将玉军,魏琛宇,陈国兴.路堤荷载下水泥土桩复合地基沉降理论计算[J].防灾减灾工程学报,2012,32(05):579-584.

陈甦, 将玉军, 魏琛宇, et al. Theoretical Calculation of Settlement of Soil-cement Pile Composite Ground under Embankment[J]. 2012, 32(5): 579-584.
[1]陈甦,将玉军,魏琛宇,陈国兴.路堤荷载下水泥土桩复合地基沉降理论计算[J].防灾减灾工程学报,2012,32(05):579-584. DOI： 10.13409/j.cnki.jdpme.2012.05.014.

陈甦, 将玉军, 魏琛宇, et al. Theoretical Calculation of Settlement of Soil-cement Pile Composite Ground under Embankment[J]. 2012, 32(5): 579-584. DOI： 10.13409/j.cnki.jdpme.2012.05.014.

摘要

基于路堤荷载下桩土非等应变条件和考虑了桩土相互作用、桩间土竖向与径向位移、桩土侧面产生相对滑移以及桩侧产生负摩阻力等特点的复合地基桩间土竖向变形模式

推导了水泥土桩复合地基桩间土沉降的理论计算公式

并以桩土单元体范围内的桩间土平均沉降值作为复合地基沉降

进一步推导了水泥土桩复合地基总沉降量、下卧层压缩变形量的理论计算表达式（两者之差即为加固区压缩变形量）。理论分析表明

复合地基加固区压缩量小于同深度天然地基压缩量

复合地基下卧层压缩量小于天然地基下卧层压缩量

复合地基总沉降量小于天然地基总沉降量。同时

理论计算结果与有限元计算结果以及现场实测结果三者比较一致。

Abstract

Based on the unequal strain condition between the pile and the pile-surrounding soil

and the new pile-surrounding soil settlement model which considers the characteristics of interaction between the pile and the soil

the vertical and radial displacement of the pile-surrounding soil

the relative sliding between the pile and the soil

and the negative friction of the pile side in the soil-cement composite ground under embankment

the formulas for the pile-surrounding soil settlement in composite ground under embankment were derived.Taking the average settlement of the pile-surrounding soil in pile-soil unit as settlement of composite ground

the formulas for the total settlement and the compressive deformation of the underlying stratum in the soil-cement composite ground were further derived（the difference is just the compressive deformation of stabilized layer）.Theoretical analyses indicate that the compressive deformation of stabilized layer of composite ground is smaller than that of nature ground in same depth

the compressive deformation of the underlying stratum of composite ground is smaller than that of nature ground

and the total compressive deformation of composite ground is smaller than that of nature ground.Meanwhile

theory results conform to that from finite element method and field measurement.

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references

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填土荷载下复合地基加固区压缩量的简化算法 [J]. 李海芳,龚晓南. 固体力学学报 . 2005(01)

路堤下复合地基桩、土应力比分析 [J]. 刘吉福. 岩石力学与工程学报 . 2003(04)

复合地基的平面应力扩散效应 [J]. 徐洋,谢康和,梁仕华. 土木工程学报 . 2002(02)

粉喷桩处理高速公路软土地基地基内附加应力及沉降计算分析 [J]. 邱钰,钱国超,刘松玉. 公路交通科技 . 2001(01)

水泥搅拌桩复合地基承载力研究 [J]. 郑刚,姜忻良. 岩土力学 . 1999(03)

用位移协调法计算复合地基的沉降 [J]. 刘利民,程庆阳,张建新. 土工基础 . 1997(01)

复合地基理论及工程应用[M]. 中国建筑工业出版社 , 龚晓南编著, 2002

Deformation analysis of soft ground reinforced by columnar inclusions [J] . M. Alamgir,N. Miura,H.B. Poorooshasb,M.R. Madhav. Computers and Geotechnics . 1996 (4)

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