Test study and finite element analysis of CFG composite foundation

HUANG Sheng-gen

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Test study and finite element analysis of CFG composite foundation

更新时间：2026-06-25

- Test study and finite element analysis of CFG composite foundation
- Vol. 29, Issue 5, (2008)
- 作者机构：
  
  中国地质大学（武汉）工程学院,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473.1
- Online First：24 July 2013，
  
  Published：2008
- 稿件说明：
移动端阅览
HUANG Sheng-gen. Test study and finite element analysis of CFG composite foundation[J]. 2008, 29(5).
DOI：

HUANG Sheng-gen. Test study and finite element analysis of CFG composite foundation[J]. 2008, 29(5). DOI：

摘要

在厚褥垫状态或路堤荷载作用下复合地基的破坏主要取决于桩-褥垫体系的作用，复合地基中单桩的承载力远未发挥出来。由有限元计算结果得出以下规律：(1) 随着褥垫厚度增加，桩土应力比减小；褥垫厚度超过300 mm后，褥垫厚度的影响急剧减小；褥垫厚度超过500 mm后，褥垫厚度的影响继续减小。(2) 褥垫厚度较薄时（ 100 mm），褥垫模量对桩土应力比影响很大；褥垫厚度超过300 mm时，褥垫模量对桩土应力比的影响减小；褥垫厚度达到500 mm后，褥垫模量对桩土应力比影响很小。(3) 承载板刚度小于6.25 MN•m2时，桩土应力比随刚度增大；承载板刚度大于6.25 MN•m2时，刚度对桩土应力比的影响很小。

Abstract

According to the results of in-situ tests

the failure mechanism of composite foundation is mainly decided by the interaction between soil and cushion in the state of thick cushion or under embankments; and the practical bearing capacity of a pile in composite foundation is not brought into full play. The following rules are got from the calculation results of FEM: (1) the stress ratio of pile to soil (n) decreases with the thickness increasing; as the thickness exceeds 300 mm

the influence of cushion thickness on n reduces sharply; as the thickness exceeds 500 mm

the influence of cushion thickness is small. (2) When the cushion thickness is relatively thin ( 100 mm)

the influence of cushion modulus on n is great; as the thickness exceeds 300mm

the influence decreases; as the thickness exceeds 500 mm

the influence is very small. (3) as the rigidity of bearing plate is smaller than 6.25 MN•m2

the stress ratio of pile to soil increases with the rigidity increasing; as the rigidity exceeds 6.25 MN•m2

the influence of rigidity on n is very small.

关键词

Keywords

references

Views

1532

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical simulation of dynamic interaction between widening embankment and balance weight retaining wall in mountain region

Study of basal bearing capacity for soil nailing walls

Investigation on finite element upper bound solution based on rigid translatory moving element

Numerical simulation of damage mechanism of abrasive water jet impaction on rock

Analysis of shear stress near anchorage interface of tensile-type anchor with couple stress theory

Related Author

JIANG Xin

GENG Jian-yu

ZENG Cheng

QIU Yan-jun

QIN Hui-lai

ZHOU Tong-he

GUO Yuan-cheng

DU Chao

Related Institution

School of Civil Engineering, Southwest Jiaotong University

Key Laboratory of Highway Engineering of Sichuan Province, Southwest Jiaotong University

Key Laboratory of High-speed Railway Engineering of Education Ministry, Southwest Jiaotong University

Technical Center, China State Construction Engineering Corporation

Comprehensive Design Institute，Zhengzhou University

AI问答

⁰