| 非饱和土试验中的先进吸力控制技术 |
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| 引用本文： | 吴宏伟,陈锐.非饱和土试验中的先进吸力控制技术[J].岩土工程学报,2006,28(2):123-128. |
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| 作者姓名： | 吴宏伟 陈锐 |
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| 作者单位： | 香港科技大学土木工程系；香港科技大学土木工程系 香港；香港； |
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| 摘 要： | 介绍和评价了海外常用的3种吸力控制技术:轴平移、渗透和湿度控制。论述了每种技术的工作原理、发展过程、应用情况和优缺点。对文献中采用轴平移和渗透技术得到的试验结果进行了比较和讨论。另外,在直剪试验的剪切阶段前施加不同的吸力平衡历时,用以展示吸力平衡历时对随后的剪切过程中的各种剪切性状(抗剪强度和体变)的影响。
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| 关 键 词： | 吸力控制技术 轴平移 渗透 湿度控制 吸力平衡 非饱和土试验 |
| 文章编号： | 1000-4548（2006）02-0123-06 |
| 收稿时间： | 2005-06-02 |
| 修稿时间： | 2005-06-02 |
Advanced suction control techniques for testing unsaturated soils |
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| NG C W W,CHEN Rui.Advanced suction control techniques for testing unsaturated soils[J].Chinese Journal of Geotechnical Engineering,2006,28(2):123-128. |
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| Authors: | NG C W W CHEN Rui |
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| Affiliation: | Department of Civil Engineering The Hong Kong University of Science and Technology Hong Kong China |
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| Abstract: | Three suction control techniques(i.e.axis-translation,osmotic and humidity control) developed overseas were introduced and reviewed.The working principle,development,applications,advantages and limitations of each technique were described and discussed.Experimental data using the axis-translation and osmotic techniques were compared and discussed.Moreover,by applying different durations of suction equalization before shearing in a direct shear box,the influence of duration of suction equalization on subsequent shearing behaviour was illustrated in terms of shear strength and volume change. |
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| Keywords: | suction control technique axis-translation osmotic humidity control suction equalization unsaturated soil testing |
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