同一场地上不同桩型复合地基的静力特性试验

袁满; 丁继辉; 冯俊辉; 张攀星

doi:10.6052/j.issn.1000-4750.2013.04.S012

同一场地上不同桩型复合地基的静力特性试验

河北大学建筑工程学院,河北,保定 071002

基金项目: 河北省自然科学基金项目(2011- E080601)

详细信息

作者简介:
袁满(1962―),男,河北人,副教授,工学硕士,主要从工程力学及基础CAD研究(E-mail:yrommee@126.com)；冯俊晖(1987―),男,河北人,助理工程师,硕士,主要从事岩土工程设计与施工(E-mail:xaviervon@gmail.com)；张攀星(1987―),男,河北人,助理工程师,硕士,主要从事岩土工程设计与施工(E-mail:15932239509@163.com).

通讯作者:
丁继辉(1962―),女,河北人,教授,工学博士,主要从事固流耦合及地基基础工程研究(E-mail:dingjihui@126.com).

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- 文章访问数: 313
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出版历程
- 收稿日期: 2013-04-01
- 修回日期: 2013-11-03
- 刊出日期: 2014-06-24

STATIC CHARACTERISTICS TEST ON COMPOSITE FOUNDATION OF DIFFERENT TYPED-PILES ON AN IDENTICAL SITE

College of Civil Engineering Hebei University, Baoding, Hebei 071002, China

摘要

摘要: 该文对同一场地上的碎石桩复合地基、CFG桩复合地基、CFG长桩和水泥土短桩组合桩复合地基和CFG芯水泥土桩复合地基进行了现场载荷试验和变形试验。试验结果表明：桩径和桩间距相同条件下,两种组合桩的荷载沉降曲线接近线性关系,碎石桩复合地基荷载沉降呈明显的非线性关系；单一桩型复合地基承载力略高于两种桩型组合桩复合地基的承载力,碎石桩、CFG桩、CFG长桩水泥土短桩组合桩和CFG芯水泥土桩组合桩复合地基的承载力分别为210kPa、225kPa、197kPa和182kPa；CFG桩与桩间土之间的应力比,CFG芯水泥土桩组合桩复合地基最小、其次是CFG桩复合地基、CFG长桩水泥土短桩组合桩复合地基中最大。从应力分布的观点CFG芯水泥土组合桩复合地基应力分布较其他三种复合地基均匀；复合地基的深层变形受布桩形式的影响较大。
- 碎石桩 /
- CFG桩 /
- CFG长桩水泥土短桩 /
- CFG芯水泥土桩 /
- 复合地基 /
- 现场试验
Abstract: The site load and deformation tests for the composite foundation of different type of piles, including gravel piles, CFG piles, CFG-long piles and soil-cement-short piles and soil-cement piles with CFG core, are made on an identical site. The test results show that under an equal pile radius and an equal pile space, the load-settlement curves of the composite foundations of CFG-long piles and soil-cement-short piles and soil-cement piles with CFG core are a linear relation, and it is a non-linear relation for the composite foundation of gravel piles. The single-type-pile composite foundation bearing capacity is higher than that of a two-type-pile composite foundation. The bearing capacity of gravel piles, CFG piles, CFG-long piles and soil-cement-short piles and soil-cement piles with CFG core is respectively 210kPa, 225kPa, 197kPa and 182kPa. The stress ratio of a CFG pile to soil body among piles in the composite foundation of soil-cement piles with CFG core is the lowest, that of the composite foundation of CFG piles is the next lowest, and that of the composite foundation of CFG-long piles and soil-cement-short piles is the greatest. From the point of the stress distribution, the stress in the composite foundation of soil-cement piles with CFG core is the most uniform among the others. The arranged pile deep-layer form has a considerable effect on the deformation of composite foundations.
- gravel piles /
- CFG piles /
- CFG-long piles and soil-cement-short piles /
- soil-cement piles with CFG /
- composite foundation /
- in-site test

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参考文献(11)

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文章访问数: 313
HTML全文浏览量: 19
PDF下载量: 105
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同一场地上不同桩型复合地基的静力特性试验

通讯作者: 丁继辉(1962―),女,河北人,教授,工学博士,主要从事固流耦合及地基基础工程研究(E-mail:dingjihui@126.com).

计量

出版历程

STATIC CHARACTERISTICS TEST ON COMPOSITE FOUNDATION OF DIFFERENT TYPED-PILES ON AN IDENTICAL SITE

计量

出版历程

目录

通讯作者:
丁继辉(1962―),女,河北人,教授,工学博士,主要从事固流耦合及地基基础工程研究(E-mail:dingjihui@126.com).