FEM Analysis of Pit Supporting with Concrete Core Cement-Soil Mixed Pile

唐圣原; 陈征宙; 何东林

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FEM Analysis of Pit Supporting with Concrete Core Cement-Soil Mixed Pile

更新时间：2025-12-11

- FEM Analysis of Pit Supporting with Concrete Core Cement-Soil Mixed Pile
- Issue 2, Pages: 182-186(2007)
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  CLC： U473.12
- Published：2007
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[1]唐圣原,陈征宙,何东林.砼芯水泥土搅拌桩基坑支护的有限元分析[J].防灾减灾工程学报,2007(02):182-186.

唐圣原, 陈征宙, 何东林. FEM Analysis of Pit Supporting with Concrete Core Cement-Soil Mixed Pile[J]. 2007, (2): 182-186.
[1]唐圣原,陈征宙,何东林.砼芯水泥土搅拌桩基坑支护的有限元分析[J].防灾减灾工程学报,2007(02):182-186. DOI：

唐圣原, 陈征宙, 何东林. FEM Analysis of Pit Supporting with Concrete Core Cement-Soil Mixed Pile[J]. 2007, (2): 182-186. DOI：

摘要

砼芯水泥土搅拌桩支护方法异于常用的支护方法

没有现成的经验可借鉴

用普通的近似方法分析和设计有较大难度。为了准确了解基坑支护结构的变形情况

确保工程安全

也为了便于该新型支护方法的推广

对该基坑支护形式进行了二维有限元分析。有限元分析中采用理想弹塑性模型

考虑了支护结构和土体之间的相互作用

并将计算结果与普通的近似方法计算结果进行了比较

发现用普通近似方法进行设计存在一定的安全隐患。对砼芯水泥土搅拌桩支护设计涉及到的水泥土桩长、方桩桩长、岩土的弹模、桩间距等关键参数进行了分析和讨论

最后对砼芯水泥土搅拌桩支护设计提出了可行建议。

Abstract

Concrete Core Cement-Soil Mixed Pile differs from the common method of retaining and protection of excavations.Since no experience is available for reference

it is difficult to analyze this type of supporting structure using the traditional approximate method.For purposes of ensuring the safety of construction

the two-dimensional finite element method is used in this paper to analyze the deformational characteristics of the supporting structure.The idealized elasto-plastic model is used in FEM numerical simulation with consideration of the interaction between soil and structure.Comparisons are made between the results of FEM and the ordinary approximate method

which show the latter has some shortcomings for analyzing this type of supporting structure.The critical parameters governing the behavior of this supporting structure are found to be the length of cement-soil pile

the length of concrete pile

the elastic modulus of soil and the pile spacing.On the basis of the analytical results

some suggestions are made which can be accepted in the design of concrete core cement-soil mixed pile.

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references

深基坑开挖中双排桩支护的的三维有限元模拟 [J]. 崔宏环,张立群,赵国景. 岩土力学 . 2006(04)

砼芯水泥土搅拌桩单桩的有限元分析 [J]. 孔庆梅,孔德志,马金城,鲍鹏. 河南大学学报(自然科学版) . 2004(03)

被动桩中土拱效应问题的数值分析 [J]. 张建勋,陈福全,简洪钰. 岩土力学 . 2004(02)

砼芯水泥土搅拌桩在东方明珠小区地基处理中的应用 [J]. 刘澄华,刘晓平,周林生. 江苏建筑 . 2001(03)

一类双排桩支护结构的简化计算方法 [J]. 熊巨华. 勘察科学技术 . 1999(02)

Bearing capacity and settlement of concrete-cored DCM pile in soft ground [J] . Ping Dong,Ran Qin,Zhengzhou Chen. Geotechnical and Geological Engineering . 2004 (1)

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