[1]童华炜 方晓填 刘柱辉 袁 杰*.含水量对珠三角软土时效变形特性影响试验分析与模型研究[J].西安建筑科技大学学报(自然科学版),2019,51(02):168-0176.[doi:10.15986/j.1006-7930.2019.02.003]
　TONG Huawei,FANG Xiaotian,LIU Zhuhui,et al.Experimental analysis and model study on the influence of water content on the aging deformation characteristics of soft soil in Pearl River delta[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(02):168-0176.[doi:10.15986/j.1006-7930.2019.02.003]
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含水量对珠三角软土时效变形特性影响试验分析与模型研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
51
期数:
2019年02期
页码:
168-0176
栏目:
出版日期:
2019-04-28

文章信息/Info

Title:
Experimental analysis and model study on the influence of water content on the aging deformation characteristics of soft soil in Pearl River delta
文章编号:
201802018
作者:
童华炜1 方晓填1 刘柱辉2 袁 杰1*
(1、广州大学 土木工程学院 广东 广州 51000 6;2、中交(广州)铁道设计研究院有限公司 广东 广州 510290）
Author(s):
TONG Huawei1 ; FANG Xiaotian1;  LIU Zhuhui2;  YUAN Jie1
(1.School of Civil Engineering, Guangzhou University, Guangzhou 510006China 2.CCCC(Guangzhou) Railway Consultants CO.,LTD, Guangzhou 510290, China )
关键词:
珠江三角洲; 软土; 时效变形; 直剪蠕变; 含水量; 模型分析
Keywords:
The P earl R iver Delta ; soft soil; time-dependent deformation; direct shear creep; water content; model analysis
分类号:
TU411
DOI:
10.15986/j.1006-7930.2019.02.003
文献标志码:
A
摘要:
软土时效变形特性对于建筑物的稳定性有着重要影响。通过室内直剪蠕变试验，在相同试验条件下完成了5组不同含水量及不同应力水平试样时效变形特性的测试,获得了试样含水量与时效变形特性的关系,研究含水量对珠三角软土时效变形特性的影响。试验结果表明，该地区软土变形时效特性明显，含水量是影响软土时效变形特性的重要因素之一。采用五元件Kelvin模型和西原正夫模型对试验曲线进行拟合分析，两个模型在不同含水量、不同应力水平组合下的拟合与试验结果都具有良好的一致性，且两个模型拟合效果具有互补性。引入邓肯-张模型非线性E-v模型，使西原正夫模型在低含水量低荷载时的拟合效果显著提高。
Abstract:
The time-dependent deformation characteristic of soft soil has an important influence on the stability of the building. Through the direct shear creep test in laboratory , 5 groups of different water content and different stress levels of the sample time-dependent deformation character istics were tested under the same test conditions, the relationship between the water content of the specimen and the time-dependent deformation characteristics was obtained, and the effect of water content on the time-depent deformation characteristics of the soft soil in the Pearl River Delta was studied. The result s show that the obvious time-characteristic of the soft soil and the water content is one of the important factors affecting the time-dependent deformation characteristic of soft soil. The five component Kelvin model and Nishihara Masao model were used to analyze the experimental curves. The fitting and experimental results of the two models under different water content and different stress levels had good consistency, and the fitting effects of the two models were complementary. The nonlinear E-v model of Duncan - Chang model is introduced to improve the fitting effect of Nishihara Masao model at low water content and low load.

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备注/Memo

备注/Memo:
收稿日期：2018-02-09 修改稿日期：2019-03-08基金项目：广东省自然科学基金项目(2017A030313293); 广东省教育厅特色创新类项目(2016KTSCX108); 广州市科技计划项目(201801010250)第一作者：童华炜（1962—），男，教授，博士生导师，主要从事地基处理、施工技术方面的研究。E-mail: thw12345678@163.com
更新日期/Last Update: 2019-05-23