›› 2016, Vol. 37 ›› Issue (4): 943-947.doi: 10.16285/j.rsm.2016.04.005

• 基础理论与实验研究 • 上一篇    下一篇

土体三轴试验固结过程解析解

陈志波1, 2, 3,王志文1, 2, 3,朱俊高4,梅国雄5   

  1. 1. 福州大学 环境与资源学院 资源与城乡建设系,福建 福州 350116;2. 国土资源部丘陵山地地质灾害防治重点实验室,福建 福州 350116; 3. 福建省水土流失遥感监测评估与灾害防治重点实验室,福建 福州 350116;4. 河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京 210098;5. 广西大学 土木建筑工程学院,广西 南宁 530004
  • 收稿日期:2014-06-24 出版日期:2016-04-11 发布日期:2018-06-09
  • 作者简介:陈志波,男,1977年生,博士,副教授,主要从事土体基本特性、土工数值模拟等方面的研究工作。
  • 基金资助:

    973计划课题(No. 2013CB036404);国家自然科学基金(No. 41102167);福州大学科技发展基金(No. 2011-XQ-12)

Analytical solution for consolidation process of triaxial test on soil

CHEN Zhi-bo1, 2, 3,WANG Zhi-wen1, 2, 3,ZHU Jun-gao4,MEI Guo-xiong5   

  1. 1. Department of Resources and Urban-Rural Construction, College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350116, China; 2. Key Laboratory of Geohazard Prevention of Hilly Mountains of Ministry of Land and Resources, Fuzhou, Fujian 350116, China; 3. Fujian Provincial Key Laboratory of Remote Sensing of Soil Erosion and Disaster Protection, Fuzhou University, Fuzhou, Fujian 350116, China; 4. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 5. College of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, China
  • Received:2014-06-24 Online:2016-04-11 Published:2018-06-09
  • Supported by:

    This work was supported by the National Program on Key Basic Research Project of China (973 Program)(2013CB036404), National Natural Science Foundation of China (NSFC) (41102167) and Development Program of Science and Technology of Fuzhou University (2011-XQ-12).

摘要: 三轴试验是获取土体强度和应力变形特性的一个重要室内试验手段。三轴试验中,排水固结阶段试样的孔压消散及固结完成情况是非常重要的两个核心要素,它是进行后续剪切试验的基础和依据。基于等应变假设,推导了土体三轴剪切试验排水固结过程的解析解,以用于分析整个排水固结过程的孔压消散和固结完成程度。针对室内三轴固结排水(CD)试验,利用所推导的解析解对其排水固结过程的孔压和固结度进行了验算对比。结果表明,解析解计算得到的固结度和孔压消散曲线与室内三轴剪切试验的相应曲线吻合得较好,说明解析解可应用于三轴剪切试验排水固结过程分析。

关键词: 三轴试验, 三轴固结排水(CD)试验, 固结过程, 孔压消散, 排水曲线

Abstract: As one of the major laboratory test methods, the triaxial test are often performed to gain the strength and stress and strain behaviors of soils. There are two great important factors during consolidation process of the triaxial test, i.e. the dissipation of pore pressure and the completion status of the consolidation, which determine the conduct of the following shear process. Based on equal strain assumptions, an analytical solution is presented to analyse the pore pressure and the consolidation degree throughout the drainage consolidation process of the triaxial test. According to the laboratory triaxial consolidated drained (CD) test, the pore pressure and the consolidation degree of the drainage consolidation process are checked by using the analytical solution. The comparative results show that the two curves calculated by the analytical solution, including the curve of consolidation degree and the curve of pore pressure dissipation, are in good agreement with the corresponding curves gained by laboratory triaxial shear tests, which verifies that the analytical solution can be applied to analyze the drainage consolidation process of triaxial shear test.

Key words: triaxial test, triaxial consolidated drained test, consolidation process, pore pressure dissipation, drainage curve

中图分类号: 

  • TU 411

[1] 孟庆彬, 王杰, 韩立军, 孙稳, 乔卫国, 王刚, . 极弱胶结岩石物理力学特性及本构模型研究[J]. 岩土力学, 2020, 41(S1): 19-29.
[2] 李丽华, 余肖婷, 肖衡林, 马强, 刘一鸣, 杨 星, . 稻壳灰加筋土力学性能研究[J]. 岩土力学, 2020, 41(7): 2168-2178.
[3] 杨志浩, 岳祖润, 冯怀平, . 非饱和粉土路基内水分迁移规律试验研究[J]. 岩土力学, 2020, 41(7): 2241-2251.
[4] 王康宇, 庄妍, 耿雪玉, . 铁路路基粗粒土填料临界动应力试验研究[J]. 岩土力学, 2020, 41(6): 1865-1873.
[5] 梁珂, 陈国兴, 刘抗, 王彦臻, . 饱和珊瑚砂最大动剪切模量的 循环加载衰退特性及预测模型[J]. 岩土力学, 2020, 41(2): 601-611.
[6] 梁珂, 何杨, 陈国兴, . 南沙珊瑚砂的动剪切模量和阻尼比特性试验研究[J]. 岩土力学, 2020, 41(1): 23-31.
[7] 周家作, 韦昌富, 魏厚振, 杨周洁, 李力昕, 李彦龙, 丁根荣, . 多功能水合物沉积物三轴试验系统的研制与应用[J]. 岩土力学, 2020, 41(1): 342-352.
[8] 高运昌, 高盟, 尹诗, . 聚氨酯固化海砂的静力特性试验研究[J]. 岩土力学, 2019, 40(S1): 231-236.
[9] 孔亮, 刘文卓, 袁庆盟, 董彤, . 常剪应力路径下含气砂土的三轴试验[J]. 岩土力学, 2019, 40(9): 3319-3326.
[10] 唐晓武, 柳江南, 杨晓秋, 俞悦. 开孔管桩动孔压消散特性的理论研究[J]. 岩土力学, 2019, 40(9): 3335-3343.
[11] 陈宇龙, 内村太郎, . 基于弹性波波速的降雨型滑坡预警系统[J]. 岩土力学, 2019, 40(9): 3373-3386.
[12] 陈永青, 文畅平, 方炫强, . 生物酶改良膨胀土的修正殷宗泽模型[J]. 岩土力学, 2019, 40(9): 3515-3523.
[13] 丁艳辉, 张丙印, 钱晓翔, 殷 殷, 孙 逊. 堆石料湿化变形特性试验研究[J]. 岩土力学, 2019, 40(8): 2975-2981.
[14] 孔宪京, 宁凡伟, 刘京茂, 邹德高, 周晨光, . 应力路径和干湿状态对堆石料颗粒破碎的影响研究[J]. 岩土力学, 2019, 40(6): 2059-2065.
[15] 宫凤强, 伍武星, 李天斌, 司雪峰, . 深部硬岩矩形隧洞围岩板裂破坏的试验模拟研究[J]. 岩土力学, 2019, 40(6): 2085-2098.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!