[1]肖成志,罗亚楠,王子寒,等.土工格栅-砂土界面特性的拉拔试验研究[J].深圳大学学报理工版,2019,36(No.3(221-346)):252-259.[doi:10.3724/SP.J.1249.2019.03229]
 XIAO Chengzhi,LUO Yanan,WANG Zihan,et al.Pull-out test of interface characteristics between geogrid and sand[J].Journal of Shenzhen University Science and Engineering,2019,36(No.3(221-346)):252-259.[doi:10.3724/SP.J.1249.2019.03229]
点击复制

土工格栅-砂土界面特性的拉拔试验研究()
分享到:

《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第36卷
期数:
2019年No.3(221-346)
页码:
252-259
栏目:
【土木建筑工程】
出版日期:
2019-05-20

文章信息/Info

Title:
Pull-out test of interface characteristics between geogrid and sand
文章编号:
201903005
作者:
肖成志罗亚楠王子寒胡红亮
河北工业大学土木与交通学院,天津 300401
Author(s):
XIAO Chengzhi LUO Ya’nan WANG Zihan and HU Hongliang
School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, P.R.China
关键词:
岩土工程拉拔试验土工格栅界面特性拉拔力阻力
Keywords:
geotechnical engineering pull-out test geogrids interface properties pull-out force resistance
分类号:
TU441
DOI:
10.3724/SP.J.1249.2019.03229
文献标志码:
A
摘要:
为研究筋-土界面摩擦特性,借助双向格栅与砂土的中型拉拔试验,研究界面正应力、横肋百分比、格栅宽度和拉拔速率对筋-土界面作用机理和格栅横肋受力的影响. 研究结果表明,随着界面正应力的增加,筋材抗拔能力显著增强,单宽拉拔力达到格栅极限抗拉强度时拉拔位移变小;由于砂土对格栅的挤压作用,格栅横肋分布越均匀越有利于筋材受力,界面摩擦力占总拉拔力的比值随横肋百分比的增加而减少,相同拉拔位移下较窄格栅拉拔力略小于较宽格栅;格栅纵向应变沿长度方向先增后减,应变峰值位置随着拉拔力的增加逐渐远离加载端,表明拉拔过程中格栅的受力具有传递性和不均匀性,且最大值受筋材拉拔变形的影响逐渐向筋材中部移动.
Abstract:
In order to study the friction characteristics of the reinforcement-soil interface, the effects of normal stress, percentage of transverse ribs, .geogrid width and pull-out velocity on the interaction mechanism of reinforcement-soil interface and the forces acting on the transverse ribs of geogrid are studied by means of the middle-scale pull-out test of the bidirectional geogrid and soil. The results show that with the increase of the normal stress of the interface, the pull-out resistance of the ribs increases significantly and the pull-out displacement becomes smaller when the single-width pull-out force reaches the ultimate tensile strength of the grid. Due to the squeezing effect of sand on the geogrid, the more uniform distribution of the cross-ribs of the geogrid is, the more favorable the force of the reinforcement is; the ratio of the interfacial friction to the total pull-out force decreases with the increase of the percentage of the transverse ribs, and the pull-out force of the narrower geogrid is slightly smaller than that of the wider grid under the same pull-out displacement. The longitudinal strain of the geogrid increases first and then decreases in the length direction, and the strain peak position gradually moves away from the loading end as the pull-out force increases, which indicates that the force acting on the geogrid is the transferable and inhomogeneous during the drawing process, and the maximum value is gradually moved toward the middle of the reinforcement due to the influence of the drawing deformation of the reinforcement.

参考文献/References:

[1] 刘续,唐晓武,申昊,等. 加筋土结构中筋材拉拔力的分布规律研究[J]. 岩土工程学报,2013, 35(4):800-804.
LIU Xu, TANG Xiaowu, SHEN Hao, et al. Stress distribution of reinforcement of reinforced soil structures under drawing force[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(4): 800-804.(in Chinese)
[2] 杨广庆, 庞巍, 吕鹏,等. 塑料土工格栅拉伸特性试验研究[J]. 岩土力学, 2008, 29(9): 2387-2391.
YANG Guangqing, PANG Wei, L Peng, et al. Experimental study of tensile properties of geogrids[J]. Rock and Soil Mechanics, 2008, 29(9):2387-2391.(in Chinese)
[3] 陈榕, 栾茂田, 赵维,等. 土工格栅拉拔试验及筋材摩擦受力特性研究[J]. 岩土力学, 2009, 30(4):960-964.
CHEN Rong, LUAN Maotian, ZHAO Wei, et al. Research on pull-out test and frictional resistance characteristic of geogrids[J]. Rock and Soil Mechanics,2009, 30(4): 960-964.(in Chinese)
[4] 徐超, 赵春风, 叶观宝. 关于土与土工合成材料界面的试验研究[J]. 同济大学学报自然科学版, 2004, 32(3): 307-311.
XU Chao, ZHAO Chunfeng, YE Guanbao. Research on interface between soil and geosynthetics[J]. Journal of Tongji University Natural Science, 2004, 32(3): 307-311.(in Chinese)
[5] 徐超, 廖星樾. 土工格栅与砂土相互作用机制的拉拔试验研究[J]. 岩土力学, 2011, 32(2): 423-428.
XU Chao, LIAO Xingyue. Researches on interaction mechanism between geogrid and sand by pull-out tests[J]. Rock and Soil Mechanics, 2011, 32(2): 423-428.(in Chinese)
[6] 王子鹏, 贾梓. 土工格栅横肋在加筋作用中贡献的试验研究[J]. 长江科学院院报, 2014, 31(3): 84-86.
WANG Zipeng, JIA Zi. Pull-out test on the contribution of geogrid ribs to reinforcement effect[J]. Journal of Yangtze River Scientific Research Institute, 2014, 31(3): 84-86.(in Chinese)
[7] 王家全, 陆梦梁, 周岳富, 等. 土工格栅纵横肋的筋土承载特性分析[J]. 岩土工程学报, 2018,40(1): 186-193.
WANG Jiaquan, LU Mengliang, ZHOU Yuefu, et al. Analysis on the bearing characteristics of reinforced soil in longitudinal and transverse ribs of geogrid[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(1): 186-193.(in Chinese)
[8] 靳静, 杨广庆, 刘伟超. 横肋间距对土工格栅拉拔特性影响试验研究[J]. 中国铁道科学, 2017, 28(5): 1-8.
JIN Jing, YANG Guangqing, LIU Weichao. Experimental study on effect of transverse rib spacing on geogrid pull-out characteristics[J]. China Railway Science, 2017, 28(5): 1-8.(in Chinese)
[9] 杨广庆, 李广信, 张保俭. 土工格栅界面摩擦特性试验研究[J]. 岩土工程学报, 2006, 28(8): 948-952.
YANG Guangqing, LI Guangxin, ZHANG Baojian. Experimental study on friction characteristics of geogrid interface[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(8): 948-952.(in Chinese)
[10] 唐晓松, 郑颖人, 王永甫,等. 关于土工格栅合理网孔尺寸的研究[J]. 岩土力学, 2017, 38(6): 1583-1588.
TANG Xiaosong, ZHENG Yingren, WANG Yongfu, et al. Study on the reasonable size of geogrid meshes[J]. Rock and Soil Mechanics,2017, 38(6): 1583-1588.(in Chinese)
[11] 土工合成材料工程应用手册编写委员会. 土工合成材料工程应用手册[M].北京:中国建筑工业出版社, 2000.
Compilation Committee of Manual for Application of Geosynthetics to Engineering. Manual for application of geosynthetics to engineering[M].Beijing: China Architecture and Building Press,2000.(in Chinese)
[12] PALMEIRA E M. Soil-geosynthetic interaction: modeling and analysis[J]. Geotextiles and Geomembranes, 2009,27(5):368-390.
[13] MORACI N, GIOFFRE D. A simple method to evaluate the pull-out resistance of extruded geogrids embedded in a compacted granular soil[J]. Geotextiles & Geomembranes, 2006, 24(2):116-128.
[14] SUGIMOTO M, ALAGIYAWANNA A M N. Pull-out behavior of geogrid by test and numerical analysis[J]. Journal of Geotechnical and Geo-environmental Enginee-ring, 2003, 129(4): 361-371.
[15] CHEN C, MCDOWELL G R, THOM N H. Investigating geogrid-reinforced ballast: experimental pull-out tests and discrete element modelling[J]. Soils and Foundations, 2014, 54(1): 1-11.

相似文献/References:

[1]郭彪,韩颖,龚晓南,等.考虑横竖向渗流的砂井地基非线性固结分析[J].深圳大学学报理工版,2010,27(4):459.
 GUO Biao,HAN Ying,GONG Xiao-nan,et al.Nonlinear consolidation behavior of sand foundation with both horizontal and vertical drainage[J].Journal of Shenzhen University Science and Engineering,2010,27(No.3(221-346)):459.
[2]苏栋,袁胜强,李锦辉.水平单向及多向载荷下单桩响应的数值研究[J].深圳大学学报理工版,2011,28(No.5(377-470)):389.
 SU Dong,YUAN Sheng-qiang,and LI Jin-hui.Numerical study on response of a single pile under unidirectional and multidirectional horizontal loadings[J].Journal of Shenzhen University Science and Engineering,2011,28(No.3(221-346)):389.
[3]张永兴,陈林.地震作用下挡土墙主动土压力分布[J].深圳大学学报理工版,2012,29(No.1(001-094)):31.[doi:10.3724/SP.J.1249.2012.01031]
 ZHANG Yong-xing and CHEN Lin.Seismic active earth pressure of retaining wall[J].Journal of Shenzhen University Science and Engineering,2012,29(No.3(221-346)):31.[doi:10.3724/SP.J.1249.2012.01031]
[4]刘顺青,洪宝宁,方庆军,等.高液限土和红黏土的水敏感性研究[J].深圳大学学报理工版,2013,30(No.1(001-110)):78.[doi:10.3724/SP.J.1249.2013.01078]
 Liu Shunqing,Hong Baoning,et al.Study on the water sensitivity of high liquid limit soil and red clay[J].Journal of Shenzhen University Science and Engineering,2013,30(No.3(221-346)):78.[doi:10.3724/SP.J.1249.2013.01078]
[5]李凡,李雪峰.两条雁行预制裂隙贯通机制的细观数值模拟[J].深圳大学学报理工版,2013,30(No.2(111-220)):190.[doi:10.3724/SP.J.1249.2013.02190]
 Li Fan and Li Xuefeng.Micro-numerical simulation on mechanism of fracture coalescence between two pre-existing flaws arranged in echelon[J].Journal of Shenzhen University Science and Engineering,2013,30(No.3(221-346)):190.[doi:10.3724/SP.J.1249.2013.02190]
[6]王杏杏,潘林,高凌霞,等.黄土微结构的谱系聚类分析[J].深圳大学学报理工版,2016,33(No.4(331-440)):394.[doi:10.3724/SP.J.1249.2016.04394]
 Wang Xingxing,Pan Lin,Gao Lingxia,et al.Pedigree clustering analysis of the microstructure of loess[J].Journal of Shenzhen University Science and Engineering,2016,33(No.3(221-346)):394.[doi:10.3724/SP.J.1249.2016.04394]
[7]杨果林,龚铖,黄玮.GFRP桩在泥炭质土中静压挤土的效应试验[J].深圳大学学报理工版,2016,33(No.5(441-550)):484.[doi:10.3724/SP.J.1249.2016.05484]
 Yang Guolin,Gong Cheng,and Huang Wei.Experiments of soil compacting effect of GFRP pile in peaty soil[J].Journal of Shenzhen University Science and Engineering,2016,33(No.3(221-346)):484.[doi:10.3724/SP.J.1249.2016.05484]
[8]林署炯,冉孟胶,陈剑尚,等.填埋固化污泥土的压缩过程及微结构变化[J].深圳大学学报理工版,2017,34(No.2(111-220)):147.
 Lin Shujiong,Ran Mengjiao,Chen Jianshang,et al. Compression process of the landfilled solidified sludge soil and its microstructure changes[J].Journal of Shenzhen University Science and Engineering,2017,34(No.3(221-346)):147.
[9]陈之祥,李顺群,夏锦红,等.基于紧密排列土柱模型的冻土热参数计算[J].深圳大学学报理工版,2017,34(No.4(331-440)):393.[doi:10.3724/SP.J.1249.2017.04393]
 Chen Zhixiang,Li Shunqun,Xia Jinhong,et al.Calculation of thermal parameters of frozen soil based on the closely spaced soil column model[J].Journal of Shenzhen University Science and Engineering,2017,34(No.3(221-346)):393.[doi:10.3724/SP.J.1249.2017.04393]
[10]肖成志,李晓峰,张静娟.压实度和含水率对含砂粉土性质的影响[J].深圳大学学报理工版,2017,34(No.5(441-550)):501.[doi:10.3724/SP.J.1249.2017.05501]
 Xiao Chengzhi,Li Xiaofeng,and Zhang Jingjuan.Effect of compaction degree and water content on performance of sandy silt[J].Journal of Shenzhen University Science and Engineering,2017,34(No.3(221-346)):501.[doi:10.3724/SP.J.1249.2017.05501]

备注/Memo

备注/Memo:
Received:2018-03-22;Accepted:2018-08-30
Foundation:National Natural Science Foundation of China (41877255,50909032); Natural Science Foundation of Hebei Province (E2018202108)
Corresponding author:Professor XIAO Chengzhi. E-mail: czxiao@ hebut.edu.cn
Citation:XIAO Chengzhi,LUO Ya’nan,WANG Zihan,et al.Pull-out test of interface characteristics between geogrid and sand[J]. Journal of Shenzhen University Science and Engineering, 2019, 36(3): 252-259.(in Chinese)
基金项目:国家自然科学基金资助项目 (41877255,50909032);河北省自然科学基金资助项目 (E2018202108)
作者简介:肖成志(1976—),河北工业大学教授、博士生导师,研究方向:土工合成材料、软土特性和管道.E-mail: czxiao@hebut.edu.cn
引文:肖成志,罗亚楠,王子寒,等.土工格栅-砂土界面特性的拉拔试验研究[J]. 深圳大学学报理工版,2019,36(3):252-259.
更新日期/Last Update: 2019-04-22