基于扰动状态概念理论的固化淤泥一维压缩模型

饶春义; 朱剑锋; 潘斌杰; 刘浩旭; 周志军

doi:10.11779/CJGE2019S1044

基于扰动状态概念理论的固化淤泥一维压缩模型 English Version

饶春义^{1, 2},
朱剑锋^1, ,,
潘斌杰¹,
刘浩旭¹,
周志军³

1. 宁波大学建筑工程与环境学院,浙江宁波 315211;
2. 宁波市镇海区人民政府蛟川街道办事处,浙江宁波 315211;
3. 五邑大学土木建筑学院,广东江门 529020

基金项目: 浙江省自然科学基金项目（LY17E080006）; 国家自然科学基金项目（51879133; 51409142）; 宁波市自然科学基金项目（2017A610307）; 广东高校优秀青年创新人才培养计划项目（2012CYM_0128）

详细信息

作者简介:
饶春义(1993—),男,硕士研究生,主要从事软土加固技术研究。E-mail：raochunyi@sina.com。

通讯作者:
朱剑锋，E-mail：zhujianfeng0811@163.com

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出版历程
- 收稿日期: 2019-04-29
- 发布日期: 2019-07-14

One-dimensional compression model for solidified silt based on theory of disturbed state concept

1. Faculty of Architectutal Civil Environment, Ningbo University, Ningbo 315211, China;
2. Jiaochuan Street Office of the People's Government of Zhenhai District, Ningbo 315211, China;
3. School of Civil Engineering and Architecture, Wuyi University, Jiangmen 529020, China

摘要

摘要: 采用低碳、环保的镁质水泥对淤泥进行固化处理,研究了不同龄期下固化淤泥一维压缩特性。采用新型环刀制样方法,开展了镁质水泥固化淤泥的一维压缩实验研究。结果表明：固化淤泥的压缩曲线与结构性土变化趋势类似,固化淤泥的ln(1+e)-lgσ¢_v曲线存在一个明显的拐点（结构屈服应力）,且随着龄期的增长,固化淤泥的结构屈服应力逐渐增大。基于扰动状态概念理论,提出了能反应固化淤泥强化与弱化并存的一维压缩模型,试验验证了该模型可以较好预测任意龄期下固化淤泥的一维压缩特性。
- 淤泥 /
- 固化 /
- 龄期 /
- 一维压缩 /
- 扰动状态概念
Abstract: The low-carbon, environmental-friendly magnesia cement is used to solidify the silt, and the compression characteristics of the solidified silt at different ages are investigated based on the one-dimensional compression tests. A series of one-dimensional compression tests on the magnesia cement-cured silt under different curing ages are carried out using a new ring knife sample preparation method. It is found that there exists an obvious inflection point, structural yield stress, on the ln(1+e)-lgσ¢_v curve, which is similar to structural soils. Moreover, the structural yield stress of the solidified silt increases gradually with the increase of the curing age. Furthermore, an one-dimensional compression model to characterize the strengthening and weakening properties coexisted in the magnesia cement-solidified silt is proposed based on the concept of disturbed state. The experimental results show that the proposed model can reproduce well the one-dimensional compression characteristics of the solidified silt at any age.
- silt /
- solidification /
- age /
- one-dimensional compression /
- disturbance state concept

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参考文献(12)

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