RESEARCH ARTICLE


Experimental Study on Properties of Steel-plastic Geogrids and their Application in Supporting Engineering



Qingbiao Wang*, 1, 2, 3, Rongshan Lü1, Yingchun Kong1, Lingyu Tang1, Fei Xie1, Qingli Kong1, Junjie Zhang1, Tangsha Shao1, Qingkai Zhu1, Shuyi Xu1, Zhongjing Hu1, Yun Bai1, Xunmei Liang3, Shide Lu3
1 College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao Shandong 266590, China
2 Department of Resource and Civil Engineering, Shandong University of Science and Technology, Tai’an, Shandong 271019, China
3 Tai’an Road Engineering Materials Co., Ltd., Tai’an, Shandong, 271019, China


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Creative Commons License
© Wang et al.; Licensee Bentham Open

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Resource and Civil Engineering, Shandong University of Science and Technology, Tai’an, Shandong 271019, China; Tel: +8618805381111; E-mail: 1349725165@qq.com


Abstract

Steel-plastic geogrid greatly improves the stability of surrounding rock in the supporting project due to the qualities, such as high strength, high toughness and less creep deformation. Through the geogrid mechanical properties analysis, tensile strength, deformation and creep test and field experiment and so on, we researched and analyzed steel-plastic geogrids’ characteristics and supporting effect, and concluded the influencing factors of steel-plastic geogrids’ characteristics, load-time curve and the steel-plastic geogrids’ variation under different temperature. We explained steel-plastic geogrids’ supporting effect through specific examples of projects. The results of the studies are listed as follows: (1) Steel-plastic geogrid has good resistance to deformation and node failure of roadway surrounding rock deformation, which has good tensile property, creep property and deflection performance; (2) It is feasible to support the surrounding rock by forming a whole combined joint support with steel- plastic geogrid and high-strength prestressed anchor rod.

Keywords: Creep, Deflection, Mechanical properties, Plastic geogrid, Rock support, Tensile properties.