土工织物双向可拉伸多功能渗透试验装置

雷国辉; 吴纲; 姜红; 茅加峰

doi:10.11779/CJGE2016S1022

土工织物双向可拉伸多功能渗透试验装置 English Version

雷国辉^1,2,
吴纲^1,2,3,
姜红^1,2,4,
茅加峰⁵

1. 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;
2. 河海大学岩土工程科学研究所,江苏南京 210098;
3. 浙江大学海洋学院,浙江杭州 310058;
4. 青岛利业建设咨询有限公司,山东青岛 266071;
5. 南京土壤仪器厂有限公司,江苏南京 210014

基金项目: 国家自然科学基金项目（51278171）; 中央高校基本科研业务费专项资金项目（2015B06014）

详细信息

作者简介:
雷国辉(1972- ),男,江西丰城人,教授,从事土力学及地基基础工程研究。E-mail: leiguohui@hhu.edu.cn。

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出版历程
- 收稿日期: 2015-11-29
- 发布日期: 2016-03-24

Multifunctional permeability test apparatus for geotextiles under biaxial tension

LEI Guo-hui^1,2,
WU Gang^1,2,3,
JIANG Hong^1,2,4,
MAO Jia-feng⁵

1. Key Laboratory of Geomechanics and Embankment Engineering of the Ministry of Education, Hohai University, Nanjing 210098, China;
2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China;
3. Ocean College, Zhejiang University, Hangzhou 310058, China;
4. Qingdao Liye Construction Profession Co., Ltd., Qingdao 266071, China;
5. Nanjing Soil Instrument Factory Co., Ltd., Nanjing 210014, China

摘要

摘要: 为揭示土工织物工程应用时处于拉伸状态下的渗透和反滤特性,自主研制了一套多功能渗透试验装置。采用两套独立的、稳定可靠的砝码和杠杆加载机构,可以实现土工织物在单向和双向不同拉伸应力作用情况下的渗透试验。设计开发了一种多功能渗透仪,可以开展纯土工织物以及覆土土工织物在垂向无压和有压情况下的常水头和变水头渗透试验。初步应用结果表明,该试验装置在土工织物无拉伸和无垂向压力情况下的渗透试验结果与满足国标和国际标准要求的渗透仪的试验结果基本一致,且能够实现试验装置设计的所有功能,为后续开展土工织物拉伸条件下渗透和反滤特性的试验研究奠定了基础。
- 土工织物 /
- 双向拉伸 /
- 多功能渗透仪 /
- 渗透特性 /
- 反滤特性
Abstract: A multifunctional permeability test apparatus is developed to investigate the permeability and filtration properties of geotextiles under tension as encountered in practice. By adopting two individual sets of stable and reliable counterweight-and-lever loading assemblies, permeability tests can be carried out for geotextiles under either uni-axial or biaxial tension with different tensile stresses. A multifunctional permeameter is designed and developed for performing constant head and falling head permeability tests on geotextiles or soil-covered geotextiles with and without vertical load. The preliminary experimental results show that the permeability of geotextiles without tension and vertical load obtained from the newly developed apparatus is generally consistent with that obtained from a permeameter conform to the national and international standards. Moreover, all functions designed for this apparatus can be accomplished. This provides a basis for future studies on the permeability and filtration properties of geotextiles under tension.
- geotextile /
- biaxial tension /
- multifunctional permeameter /
- permeability property /
- filtration property

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参考文献(21)

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