王洋, 冯君, 李珈瑶, 赖冰, 杨涛. 2018: FRP锚杆在岩土锚固中的研究进展. 工程地质学报, 26(3): 776-784. DOI: 10.13544/j.cnki.jeg.2017-139
    引用本文: 王洋, 冯君, 李珈瑶, 赖冰, 杨涛. 2018: FRP锚杆在岩土锚固中的研究进展. 工程地质学报, 26(3): 776-784. DOI: 10.13544/j.cnki.jeg.2017-139
    WANG Yang, FENG Jun, LI Jiayao, LAI Bing, YANG Tao. 2018: ADVANCE OF FRP ANCHOR BOLTS IN GEOTECHNICAL ANCHORING. JOURNAL OF ENGINEERING GEOLOGY, 26(3): 776-784. DOI: 10.13544/j.cnki.jeg.2017-139
    Citation: WANG Yang, FENG Jun, LI Jiayao, LAI Bing, YANG Tao. 2018: ADVANCE OF FRP ANCHOR BOLTS IN GEOTECHNICAL ANCHORING. JOURNAL OF ENGINEERING GEOLOGY, 26(3): 776-784. DOI: 10.13544/j.cnki.jeg.2017-139

    FRP锚杆在岩土锚固中的研究进展

    ADVANCE OF FRP ANCHOR BOLTS IN GEOTECHNICAL ANCHORING

    • 摘要: 纤维增强复合材料(FRP)锚杆较传统锚杆具有耐腐蚀性强、轻质高强等特点,近年来在岩土锚固领域颇受青睐,代表了未来岩土锚固材料的发展方向,但其研究成果较为零散。材料力学性能研究表明,FRP具有抗拉强度高、长期性能和疲劳性能优良等优点,但存在抗弯和抗剪性能较差、脆性破坏特征显著的缺陷,在岩土锚固设计中需特别考虑;归纳分析了FRP锚固体系的破坏模式,指出锚固体系的失效通常是由多种破坏模式耦合作用的结果;总结FRP锚杆与基体介质界面黏结性能的影响因素、界面黏结强度模型和界面黏结-滑移关系,并探讨了界面剪应力分布规律;最后列举了国内外FRP锚杆的工程应用实例并指出FRP锚杆进一步的研究方向。

       

      Abstract: Recently, fibre reinforced polymer(FRP)materials are gaining increasing popularity in the field of geotechnical anchoring owing to their superior characteristics such as the resistance to corrosion, high strength-to-weight ratio to conventional steel materials. FRP represents the future development direction of geotechnical anchorage material, but now its research results are relatively scattered. Based on the mechanical properties of the material, FRP has many advantages such as high tensile strength, long-term performance and good fatigue properties. However, there are several drawbacks for FRP to be considered in the anchorage design of rock and soil. They include poor bending and shear strength, as well as brittle failure. The failure modes of FRP anchorage system are summarized, which shows that the failure of anchorage system is usually caused by coupling effect of multiple failure modes. The key issues for the study of grouted FRP anchoring are summarized and include the influence factors of bond behavior between bolt and anchorage medium, calculation model for bond stresses, the bond-slip relationship and description of the stress distribution of the anchoring interface. Finally, this paper gives some examples in engineering application of FRP bolt at home and abroad, and also points out its further research direction.

       

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