温控非饱和土三轴试验装置的研制及其应用

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (524 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要高放核废物地质处置、地热资源开采与贮存以及城市地下供热管道设计等现代岩土工程的建设都需要考虑温度的影响，使得温度对天然非饱和土体基本性质影响的研究成为土力学的重要课题之一。为了研究非饱和土水力和力学性质受温度影响的规律，需要研制新的温控试验装置，以便为这种研究提供工具和手段。基于对既有非饱和土静三轴仪的改造，研制了一种温控非饱和土三轴试验装置，通过将所研制的温控压力室与非饱和土三轴试验系统的有机结合，实现了试验过程中对温度控制及量测的目的。利用该试验装置，对不同温度下非饱和土土水特征曲线进行了测定，所得结果与现有理论结果相吻合。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	蔡国庆
	赵成刚
	白冰
	李舰

关键词 ：非饱和土, 温度控制, 三轴试验装置, 压力室, 土水特征曲线

Abstract：With the development of modern geotechnical engineering practices such as construction of high-level radioactive waste repositories, exploitation and utilization of geothermal resources, and design of the heat-supply pipelines in cities, the researches on the influence of temperature on the basic mechanical properties of natural unsaturated soils have become one of the most important issues in soil mechanics. A new temperature-controlled triaxial test system for unsaturated soils is proposed, which can be used to study the temperature effect on seepage and strength-deformation characteristics of unsaturated soils. With the combination of the existing static triaxial test system and a new temperature-controlled pressure chamber, the proposed test system can realize better control of temperature. Using the new temperature-controlled triaxial test systerm, the soil-water characteristic curves under different temperatures are tested, and the experimental data are consistent with the existing theoretical results.

Key words： unsaturated soils temperature control triaxial test system pressure chamber soil-water characteristic curve

收稿日期: 2012-06-25

TU415

基金资助:国家自然科学基金项目（51078019，50978022）；中央高校基本科研业务费专项资金项目（2011YJS043）

作者简介: 蔡国庆 (1983 – ),男，江苏镇江人，博士，主要从事非饱和土本构关系、多场耦合等方面的研究工作。

引用本文:

蔡国庆, 赵成刚, 白冰, 李舰. 温控非饱和土三轴试验装置的研制及其应用[J]. 岩土工程学报, 2012, 34(6): 1013-1019. CAI Guo-qing, ZHAO Cheng-gang, BAI Bing, LI Jian. Development and application of a temperature-controlled triaxial test system for unsaturated soils. Chinese J. Geot. Eng., 2012, 34(6): 1013-1019.

链接本文:

http://manu31.magtech.com.cn/Jwk_ytgcxb/CN/ 或 http://manu31.magtech.com.cn/Jwk_ytgcxb/CN/Y2012/V34/I6/1013

[1] ALONSO E E, GENS A, JOSA A. A constitutive model for partially saturated soils[J]. Géotechnique,1990, 40 (3): 405 – 430.
[2] WHEELER S J, SHARMA R S, BUISSON M S. Coupling of hydraulic hysteresis and stress-strain behaviour in unsaturated soils[J]. Géotechnique, 2003, 53 (1): 41 – 54.
[3] GENS A. Soil-environment interactions in geotechnical engineering[J]. Géotechnique, 2010, 60 (1): 3 – 74.
[4] 赵成刚 , 韦昌富 , 蔡国庆 . 土力学理论的发展以及面临的挑战 [J]. 岩土力学 , 2011, 32 (12):3521 – 3540. (ZHAO Cheng-gang, WEI Chang-fu, CAI Guo-qing. The new development and challenge for soil mechanics[J]. Rock and Soil Mechanics, 2011, 32 (12): 3521 – 3540. (in Chinese))
[5] TANG A M, CUI Y J. Modelling the thermomechanical volume change behaviour of compacted expansive clays[J]. Géotechnique, 2009, 59 (3): 185 – 195.
[6] CAI Guo-qing, ZHAO Cheng-gang, LIU Yan, et al. A nonlinear multi-field coupled model for soils[J], Science China: E, 2011, 54 (5): 1300 – 1314.
[7] CAI Guo-qing, ZHAO Cheng-gang, LIU Yan, et al. Volume change behaviour of unsaturated soils under non-isothermal conditions[J], Chinese Science Bulletin, 2011, 56 (23): 2495 – 2504.
[8] 蔡国庆 , 赵成刚 , 刘艳 . 非饱和土土–水特征曲线的温度效应 [J]. 岩土力学 , 2010, 31 (4): 1055 – 1060. (CAI Guo-qing, ZHAO Cheng-gang, LIU Yan. Temperature effects on soil-water characteristic curve of unsaturated soils[J]. Rock and Soil Mechanics, 2010, 31 (4): 1055 – 1060. (in Chinese))
[9] 蔡国庆 , 赵成刚 , 刘艳 . 一种预测不同温度下非饱和土相对渗透系数的间接方法 [J]. 岩土力学 , 2011, 32 (5): 1405 – 1410. (CAI Guo-qing, ZHAO Cheng-gang, LIU Yan. An indirect method for predicting permeability functions of unsaturated soils at different temperatures[J]. Rock and Soil Mechanics, 2010, 32 (5): 1405 – 1410. (in Chinese))
[10] 蔡国庆 , 赵成刚 . 非饱和土渗流和变形强度特性的温度效应 [J]. 力学进展 , 2010, 40 (2): 147 – 156. (CAI Guo-qing, ZHAO Cheng-gang. Temperature effects on seepage and strength-deformation characteristics of unsaturated soils[J]. Advances in Mechanics, 2010, 40 (2): 147 – 156. (in Chinese))
[11] MITCHELL J K, CAMPANELLA R G. Creep studies on saturated clays[C]// Laboratory Shear Testing of Soils: a Symposium, ASTM-NRC. Ottawa, 1963: 90 – 110.
[12] DEMARS K P, CHARLES R D. Soil volume changes induced by temperature cycling[J]. Canadian Geotechnical Journal, 1982, 19 : 188 – 194.
[13] BERGENSTAHL L, GABRIELSSON A, MULABDIC M. Changes in soft clay caused by increases in temperature[C]// Proceedings of 13th International Conference on Soil Mechanics and Foundation Engineering. New Delhi, 1994: 1637 – 1640.
[14] KUNTIWATTANAKUL P, TOWHATA I, OHISHI K, et al. Temperature effects on undrained shear characteristics on clay[J]. Soils and Foundations, 1995, 35 (1): 427 – 441.
[15] DE-BRUYN D, THIMUS J F. The influence of temperature on mechanical characteristics of boom clay: the results of an initial laboratory programme[J]. Engineering Geology, 1996, 41 : 117 – 126.
[16] 陈正汉 , 谢云 , 孙树国 , 等 . 温控土工三轴仪的研制及其应用 [J]. 岩土工程学报 , 2005, 27 (8): 928 – 933. (CHEN Zheng-han, XIE Yun, SUN Shu-guo, et al. Temperature controlled triaxial apparatus for soils and its application[J]. Chinese Journal of Geotechnical Engineering, 2005, 27 (8): 928 – 933. (in Chinese))
[17] 白冰 , 陈星欣 . 一种用于饱和土的热固结试验装置及其应用 [J]. 岩土工程学报 , 2011, 33 (6): 896 – 900. (BAI Bing, CHEN Xing-xin. A test apparatus for the thermal consolidation of saturated soil and its application[J]. Chinese Journal of Geotechnical Engineering, 2011, 33 (6): 896 – 900. (in Chinese))
[18] UCHAIPICHAT A, KHALILI N. Experimental investigation of thermo-hydro-mechanical behaviour of an unsaturated silt[J]. Géotechnique, 2009, 59 (4): 339 – 353.