• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 30 Issue 1
Jan.  2017
Turn off MathJax
Article Contents
XIAO Chengzhi, WANG Jiayong, YANG Yaxin, ZHOU Xia. Deformation and Mechanical Performance of Buried HDPE Pipes Reinforced by Geogrids[J]. Journal of Southwest Jiaotong University, 2017, 30(1): 38-44,68. doi: 10.3969/j.issn.0258-2724.2017.01.006
Citation: XIAO Chengzhi, WANG Jiayong, YANG Yaxin, ZHOU Xia. Deformation and Mechanical Performance of Buried HDPE Pipes Reinforced by Geogrids[J]. Journal of Southwest Jiaotong University, 2017, 30(1): 38-44,68. doi: 10.3969/j.issn.0258-2724.2017.01.006

Deformation and Mechanical Performance of Buried HDPE Pipes Reinforced by Geogrids

doi: 10.3969/j.issn.0258-2724.2017.01.006
  • Received Date: 31 May 2015
  • Publish Date: 25 Feb 2017
  • To analyze load reduction performance of buried pipes reinforced by geogrids, the influence of embedment depth of the uppermost geogrid, length of geogrid, geogrid layers, sand surrounding buried pipes and buried depth of pipes on the deformation and mechanism of pipes was studied through static loading plate tests. The results show that when the length of geogrids changes from 0 to 4D (D denotes the external diameter of pipes), relative density of sand varies from 45% to 75% and reinforcement layers change from 0 to 3 or 4, the ultimate bearing capacities of load plate are respectively 1.4, 1.6 and 2.52 times the one without reinforcement. Moreover, the hoop strain plays a dominant role in buried pipes, ranging from -1.0% to 0.5%. Deformation in vertical direction is greater than that in horizontal direction. The optimal load reduction performance of pipes reinforced by geogrids was obtained when the embedment depth of the uppermost geogrid is 0.4B (B is width of loading plate), geogrid length is 4D, and geogrid layers is 3-4.

     

  • loading
  • 许成祥,贾善坡,涂金钊,等. 基于工作应变模态的管道损伤识别试验研究[J]. 西南交通大学学报,2013,48(6):1031-1037. XU Chengxiang, JIA Shanpo, TU Jinzhao, et al. Experimental study on damage indentification of pipeline based on operational strain modal shape[J]. Journal of Southwest Jiaotong University, 2013, 48(6):1031-1037.
    郎需庆,赵志勇,宫宏,等. 油气管道事故统计分析与安全运行对策[J]. 安全、健康和环境,2006,6(10):15-17. LANG Xuqing, ZHAO Zhiyong, GONG Hong, et al. Accidents statistical analysis and safety operation measures of the oil-gas pipeline[J]. Safety Health Environment, 2006, 6(10):15-17.
    国辉. 我国城市天然气管道事故统计及分析[J]. 安全、健康和环境,2008,8(4):6-8. GUO Hui. Statistics and analysis for accidents from natural gas pipelines in cities in China[J]. Safety Health Environment, 2008, 8(4):6-8.
    DHAR A, MOORE I D, MCGRATH T J. Two-dimensional analyses of thermoplastic culvert deformation and strains[J]. Journal Geotechnical and Geoenvironmental Engineering, 2004, 130(2):199-208.
    王晓谋,顾安全. 上埋式管道垂直土压力的减荷措施[J]. 岩土工程学报,1990,12(3):83-89. WANG Xiaomo, GU Anquan. Method of load reduction for the vertical earth pressure on projecting conduit[J]. Chinese Journal of Geotechnical Engineering, 1990, 12(3):83-89.
    杨锡武,张永兴. 山区公路高填方涵洞加筋桥减载方法及其设计理论研究[J]. 岩石力学与工程学报,2005,24(5):1561-1571. YANG Xiwu, ZHANG Yongxing. Study on the method and theory of load reduction by reinforcement bridge for the culvert beneath high filling[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(5):1561-1571.
    周敏,杜延军,张亚军,等. 埋地HDPE管道施工过程中土拱效应变化特征研究[J]. 岩石力学与工程学报,2015,34(2):414-424. ZHOU Min, DU Yanjun, ZHANG Yajun, et al. Variation of soil arching effect during burying process of HDPE pipes[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(2):414-424.
    TUPA N. The study of the application of soil reinforcement technique to minimize the consequences of explosions of buried pressurized pipes[D]. Brasilia:University of Brasilia, 2005.
    PALMEIRA E M, ANDRADE H K. Protection of buried pipes against accidental damage using geosynthetics[J]. Geosynthetics International, 2010, 17(4):228-241.
    SELVADURAI A P S. Ehancement of the uplift capacity of buried pipelines by the use of geogrids[J]. Geotechnical Testing Journal, 1989, 12(3):211-216.
    KAWABATA T, UCHIDA K, HIRAI T, et al. Experiments on buried pipe using backfill of cover with geosynthetics[J]. Pipelines, 2014:1271-1278.
    RYAN C, JIE H, DEEP K, et al. Laboratory study on geosynthetic protection of buried steel-reinforced HDPE pipes from static loading[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2015, 140:9-18.
    RAJKUMAR R, ILAMPARUTHI K. Experimental study on the behavior of buried flexible plastic pipe[J]. European Journal of Plant Pathology, 2008, 118(1):73-83.
    American Association of State Highway and Transportation Officials (AASHTO). AASHTO LRFD bridge design specifications[S]. Washington, D.C.:[s.n.], 1998.
    中华人民共和国建设部. GB50332-2002给水排水工程管道结构设计规范[S]. 北京:中国建筑工业出版社,2002.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(549) PDF downloads(414) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return