新型可视土工拉拔试验仪的研发与应用

王家全; 周岳富; 夏 雨; 黄世斌

doi:10.11779/CJGE201604017

新型可视土工拉拔试验仪的研发与应用 English Version

广西科技大学土木建筑工程学院，广西柳州545006

基金项目: 国家自然科学基金项目（51469005,51009030）; 广西自然科学基金项目（2015GXNSFAA139257）; 广西科技大学博士基金项目（院科博1011）

详细信息

作者简介:
王家全(1981- ),男,广西南宁人,博士,教授,主要从事加筋结构、细观岩土力学、地基基础等方面的教学与研究工作。E-mail: wjquan1999@163.com。

中图分类号: TU411
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- 修回日期: 2015-02-26
- 发布日期: 2016-04-24

Development and application of new visual pullout test apparatus for geosynthetics

College of Civil and Architectural Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China

摘要

摘要: 研制了一台新型可视自动采集数据的土工拉拔试验装置,可用于多种土工材料和填料作用下的拉拔试验。该装置改进了加载系统和反力系统,实现了拉拔界面的可视与数据采集的自动化,并可量测土工材料不同嵌固长度处的位移,获取土工材料变形值,探索筋土作用过程中筋材受力机理及界面土体位移变化规律。使用新研制的试验装置开展了以砾类粗粒土为填料的格栅拉拔试验,结果表明：上覆荷载增大,土中格栅的应变变小,土体与格栅的界面摩擦和嵌固作用越显著; 筋土界面处土体颗粒存在平移及转动两种运动模式,且界面处土体形成稳定的位移集中带。
- 拉拔试验 /
- 可视 /
- 格栅位移 /
- 格栅应变
Abstract: A new visual pullout test model device is developed, which can be used to carry out pullout tests on geosynthetics and soil. The device improves the loading system and the reaction system, and realizes the pullout interface visualization and data acquisition automation. It can measure the displacements of geosynthetics with different embedment lengths, and obtain the deformation values of geosynthetics. The reinforcement mechanism and displacement evolution of interface soil in the process of reinforcement soil interface interaction are studied. The newly developed test equipment is used to carry out the pullout tests on coarse grained soil and geogrid. The results show that the greater the vertical pressure, the smaller the soil grid strain, the more significant the interfacial friction between soil and geogrid and the embedment effect. Two modes of translational and rotational displacements can be found on the reinforcement soil interface, and the interface particles form a stable soil displacement concentrated zone.
- pullout test /
- visualization /
- geogrid displacement /
- geogrid strain

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参考文献(10)

[1]	杨果林. 现代加筋土技术应用与研究进展[J]. 力学与实践, 2002, 24(1): 9-17. (YANG Guo-lin. Research progress on reinforced earth[J]. Mechanics and Practice, 2002, 24(1): 9-17. (in Chinese))
[2]	SCHLOSSER F, UNTERREINER P, PLUMELLE C. French research pogram clouterre on soil nailing[C]// Bordenrh, Grouting, Soil Improvement and Geosynthetics, ASCE. New York: Geotechnical Special Publication, 1992: 739-750.
[3]	甘采华, 梁寿忠, 李春英. 土工合成材料老化指标的研究[J]. 广西大学学报(自然科学版), 2007, 32(3): 243-247. (GAN Cai-hua, LIANG Shou-zhong, LI Chun-ying. The research of geosynthetic materials aging indicators[J]. Journal of Guangxi University (JCR Science Edition), 2007, 32(3): 243-247. (in Chinese))
[4]	MORACI N, RECALCATIB P. Factors affecting the pullout behaviour of extruded geogrids embedded in a compacted gran-ularsoil[J]. Geotextiles and Geomembranes, 2006, 24(4): 220-242.
[5]	AHMED Hosny Mohammed Abdel-Rahman. Modeling of soil-geosynthetic interaction in reinforced earth works[D]. New Orleans: Tulane University, 1997.
[6]	ABU-FARSAKH M Y, FARRAG K, ALMOH’D I, et al. Evaluation of interaction between geosynthetics and marginal cohesive soils from pullout tests[C]// Geo Jordan 2004, Irbid, Jordan @sAdvances in Geotechnical Engineering with Emphasis on Dams, Highway Materials, and Soil Improvement. Irbid, ASCE, 2004: 299-310.
[7]	张绪涛, 张强勇. 土工直接拉伸试验装置的研制及应用[J]. 岩土工程学报, 2014, 36(7): 1309-1315. (ZHANG Xu-tao, ZHANG Qiang-yong. Development and application of geotechnical direct tensile test device[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(7): 1309-1315. (in Chinese))
[8]	吴海民, 束一鸣. 土工合成材料双向拉伸多功能试验机的研制与初步应用[J]. 岩土工程学报, 2014, 36(1): 170-175. (WU Hai-min, SHU Yi-ming. Geosynthetic materials development and preliminary application of two-way stretch multi-function testing machine[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(1): 170-175. (in Chinese))
[9]	徐林荣, 凌建明, 刘宝琛. 土工格栅与膨胀土界面摩擦阻力系数试验研究[J]. 同济大学学报, 2004, 32(2): 172-176. (XU Lin-rong, LING Jian-ming, LIU Bao-chen. Experiment on interface friction coefficient parameters between geogrids and expansive soil[J]. Journal of Tongji University, 2004, 32(2): 172-176. (in Chinese))
[10]	施有志. 土工合成材料的拉拔试验研究[J]. 岩土工程界, 2003, 6(10): 75-78. (SHI You-zhi. Pulling-experimental study of geotechnical composite material[J]. Geotechnical Engineering World, 2003, 6(10): 75-78. (in Chinese))

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新型可视土工拉拔试验仪的研发与应用 English Version

作者简介: 王家全(1981- ),男,广西南宁人,博士,教授,主要从事加筋结构、细观岩土力学、地基基础等方面的教学与研究工作。E-mail: wjquan1999@163.com。

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Development and application of new visual pullout test apparatus for geosynthetics

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目录

作者简介:
王家全(1981- ),男,广西南宁人,博士,教授,主要从事加筋结构、细观岩土力学、地基基础等方面的教学与研究工作。E-mail: wjquan1999@163.com。