固化吹填软土力学特性试验

doi:10.13229/j.cnki.jdxbgxb201403013

吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (3): 661-667.doi: 10.13229/j.cnki.jdxbgxb201403013

固化吹填软土力学特性试验

杨爱武^1,2,周金³,孔令伟¹

1.中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室, 武汉 430071;
2.天津城建大学软土特性与工程环境重点实验室,天津 300381;
3.中交四航工程研究院有限公司,广州 510230

收稿日期:2012-12-05 出版日期:2014-03-01 发布日期:2014-03-01
通讯作者: 孔令伟(1967),男,研究员,博士.研究方向:特殊土和非饱和土力学特性.E-mail:lwkong@whrsm.ac.cn E-mail:tulilab@163.com
作者简介:杨爱武(1971),男,教授,博士.研究方向:软土地基处理及土体微观结构.E-mail:tulilab@163.com
基金资助:
国家自然科学基金项目(51179186,41372291);天津市科技发展计划项目(06YFSZSF04000).

Experiment on mechanical properties of stabilized soft dredger fill

YANG Ai-wu^1,2,ZHOU Jin³,KONG Ling-wei¹

1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071,China;
2.Key Laboratory of Soft Soil Engineering Character and Engineering Environment of Tianjin,Tianjin Chengjian University ,Tianjin 300381, China;
3.CCCC Fourth Harbor Engineering Institute Co.,Ltd, Guangzhou 510230,China

Received:2012-12-05 Online:2014-03-01 Published:2014-03-01

摘要/Abstract

摘要： 对CJDS07型固化剂固化的天津滨海吹填软土的力学特性试验研究。结果表明:吹填固化土的压缩模量、抗剪强度、结构性都随着龄期的增长逐渐增加,固化土逐渐由高压缩性转化成为中压缩性。吹填固化土的应力-应变关系受围压的影响较大,当围压小于某一值时,应力-应变曲线为应变软化型,反之为应变硬化型。基于以上研究成果,以邓肯张模型为基础,建立了适用于吹填固化土的应力-应变关系模型。

关键词: 土木建筑工程, 固化土, 压缩特性, 抗剪强度特性, 应力-应变关系

Abstract: The mechanical characteristic of the soft dredger fill, which is stabilized by the CJDS07 agent, is studied in Tianjin new area. The results show that the compression modulus, shear strength and structure of the stabilized soft dredger fill increase with the curing age. The stabilized soil gradually changes from high compressibility to middle compressibility. The stress and strain relationship of the stabilized soil is highly influenced by the confining pressure, that when the confining pressure is smaller than a certain value, the relationship is tend to be strain softening, otherwise, it is strain hardening. Based on the above research results and Dun-Chang model, the stress-strain relationship model suitable for the stabilized dredger fill is established.

Key words: civil construction engineering, solidified soil, compression characteristic, shear strength characteristic, stress-strain relationship

中图分类号:

TU472

杨爱武,周金,孔令伟. 固化吹填软土力学特性试验[J]. 吉林大学学报(工学版), 2014, 44(3): 661-667.

YANG Ai-wu,ZHOU Jin,KONG Ling-wei. Experiment on mechanical properties of stabilized soft dredger fill[J]. 吉林大学学报(工学版), 2014, 44(3): 661-667.

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固化吹填软土力学特性试验

Experiment on mechanical properties of stabilized soft dredger fill

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