Finite Element Analysis of Bearing Capacity of DJM Composite Foundation Considering the Influence of Transition between Piles and Soil

李涛; 洪宝宁; 宋法宝

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Finite Element Analysis of Bearing Capacity of DJM Composite Foundation Considering the Influence of Transition between Piles and Soil

更新时间：2025-12-11

- Finite Element Analysis of Bearing Capacity of DJM Composite Foundation Considering the Influence of Transition between Piles and Soil
- Issue 3, Pages: 289-292(2004)
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  CLC： U443
- Published：2004
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[1]李涛,洪宝宁,宋法宝.考虑过渡区影响的粉喷桩复合地基承载特性的有限元数值分析[J].防灾减灾工程学报,2004(03):289-292.

李涛, 洪宝宁, 宋法宝. Finite Element Analysis of Bearing Capacity of DJM Composite Foundation Considering the Influence of Transition between Piles and Soil[J]. 2004, (3): 289-292.
[1]李涛,洪宝宁,宋法宝.考虑过渡区影响的粉喷桩复合地基承载特性的有限元数值分析[J].防灾减灾工程学报,2004(03):289-292. DOI：

李涛, 洪宝宁, 宋法宝. Finite Element Analysis of Bearing Capacity of DJM Composite Foundation Considering the Influence of Transition between Piles and Soil[J]. 2004, (3): 289-292. DOI：

摘要

粉喷桩成桩过程中不可避免地会带动桩间土产生强烈的挤压和振动

在固化剂与桩体发生物理化学反应的同时

桩周一定范围内的土体也进行了固化和挤密

使得在桩土交界处形成环向变化的过渡区

过渡区的材料由桩逐渐过渡到桩间土

因此有必要考虑该过渡区对粉喷桩复合地基承载特性的影响。本文从粉喷桩复合地基桩土交界处的特点出发

考虑了桩土材料性质变化的过渡区单元

利用上的摩尔—库仑本构模型

和Plaxis专业岩土软件对粉喷桩复合地基进行了有限元数值分析

就粉喷桩复合地基中桩和土的承载特性得出了一些有益的结论。

Abstract

Intense extrusion and vibration between the soil and pile will always take place in the formingprocess of DJM pile

which makes the soil around the piles being reinforced and extruded and the physicaland chemical reaction being taken place simultaneously. The circumferential transition is formed withinwhich material transits occur from the pile to soil around the edge of soil and piles. Therefore

it is neces-sary to consider the influence of the transition on the composite ground of DJM. Based on the characteris-tics of piles and soil transition

this paper adopts transition elements

Mohr-coulomb failure criterion andPlaxis FEM to analyze the bearing capacity of DJM composite foundation.

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references

复合地基中桩土应力数值分析 [J]. 陈晓平,邢仲星. 工业建筑 . 2001(11)

路堤荷载下柔性悬桩复合地基的沉降分析 [J]. 杨涛. 岩土工程学报 . 2000(06)

深层搅拌桩复合地基的有限元分析 [J]. 周建民,丰定祥,郑宏. 岩土力学 . 1997(02)

地基基础理论及应用[M]. 河海大学出版社 , 施建勇编著, 2002

复合地基处理及其工程实例[M]. 中国建材工业出版社 , 牛志荣等编著, 2000

有限单元法基本原理和数值方法[M]. 清华大学出版社 , 王勖成,邵敏编著, 1997

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