GFRP抗浮锚杆界面黏结性能现场试验

doi:10.13722/j.cnki.jrme.2021.0799

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (1359 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Based on the fiber Bragg grating sensing test technology，the field pull-out destructive tests of GFRP bars and steel anti-floating anchors were performed. The bonding characteristics of the bar-slurry interface and the slurry-rock interface of GFRP anti-floating anchors were analyzed，and the influences of the anchorage length，the anchor material，the anchor diameter and other factors on the interface bond strength of two kinds of anti-floating anchors were revealed. The results show that the failure modes of GFRP bars and steel anti-floating anchors are mainly pull-off failure and shear-slip failure while the failure loads of GFRP anti-floating anchors with anchoring lengths of 4.5 and 6.5 m are 1.21 and 1.13 times that of the steel anti-floating anchors of the same specification，respectively. The average bond strength of the bar-slurry interface of the GFRP anti-floating anchors，ranging from 0.99 to 1.03 MPa，is higher than that of the steel anchor rods. The anchorage length is the most important factor that affects the bond strength of the bar-slurry interface of the anti-floating anchors. The axial stress of the slurry-rock interface of the GFRP anti-floating bolts decreases with increasing the depth，reaching a largest value at the orifice，while the shear stress of the slurry-rock interface increases first and then decreases with the depth，arriving at a peak at an anchorage depth of about 0.5 m. By comparing different materials and different types of anti-floating anchor rods，it is found that the slurry-rock interface bonding performance of the reinforced anti-floating anchor rods is slightly higher than that of the GFRP anti-floating anchor rods，and increases with the diameter of the anchor rod. The synergistic effect of the GFRP anti-floating anchor bar，the slurry and the surrounding rock and soil is higher than that of the steel anti-floating anchors.

Key words： foundation engineering GFRP anti-floating anchor interface bonding performance influencing factors bonding-slip field test FBG Sensor

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0799 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I4/748

[1] 白晓宇，张明义，张舜泉. 全长黏结螺纹玻璃纤维增强聚合物抗浮锚杆蠕变试验研究[J]. 岩石力学与工程学报，2015，34(4)：804–813.(BAI Xiaoyu，ZHANG Mingyi，ZHANG Shunquan. Creep testing on anti-floating anchors of full-length bonding thread glass fiber reinforced polymer(GFRP)[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(4)：804–813.(in Chinese))
[2] 李国维，赫新荣，吴建涛，等. 泥质砂软岩边坡加固锚杆黏结疲劳特征原位试验[J]. 岩石力学与工程学报，2020，39(9)：1 729–1 738. (LI Guowei，HE Xinrong，WU Jiantao，et al. In-situ test on bond fatigue characteristics of bolts for reinforcing soft shay sandstone slopes[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(9)：1 729–1 738.(in Chinese))
[3] 张乐文，汪稔. 岩土锚固理论研究之现状[J]. 岩土力学，2002，23(5)：627–631.(ZHANG Lewen，WANG Ren. Research on status quo of anchorage theory of rock and soil[J]. Rock and Soil Mechanics，2002，23(5)：627–631.(in Chinese))
[4] 李国维，汪井秋，SIDI，等. 侵蚀环境下预应力GFRP锚杆结构应力松弛特征[J]. 岩石力学与工程学报，2020，39(5)：877–886.(LI Guowei，WANG Jingqiu，SIDI，et al. Stress relaxation characteristics of prestressed GFRP anchor structure in corrosive environment[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(5)：877–886.(in Chinese))
[5] KUANG Z，ZHANG M Y，BAI X Y. Load-bearing characteristics of fibreglass uplift anchors in weathered rock[J]. Proceedings of the Institution of Civil Engineers-Geotechnical Engineering，2020，173(1)：49–57.
[6] 白晓宇，张明义，朱磊. 等. 全长黏结GFRP抗浮锚杆界面剪切特性试验研究[J]. 岩石力学与工程学报，2018，37(6)：1 407–1 418. (BAI Xiaoyu，ZHANG Mingyi，ZHU Lei，et al. Experimental study on shear characteristics of interface of full-bonding glass fiber reinforced polymer anti-floating anchors[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(6)：1 407–1 418.(in Chinese))
[7] LEE J Y，KIM T Y，KIM T J，et al. Interfacial bond strength of glass fiber reinforced polymer bars in high-strength concrete[J]. Composites Part B：Engineering，2008，39(2)：258–270.
[8] MASMOUDI R，MASMOUDI A，OUEZDOU M B，et al. Long-term bond performance of GFRP bars in concrete under temperature ranging from 20 ℃ to 80 ℃[J]. Construction and Building Materials，2011，25(2)：486–493.
[9] ARIAS J P M，VAZQUEZ A，ESCOBAR M M. Use of sand coating to improve bonding between GFRP bars and concrete[J]. Journal of Composite Materials，2012，46(18)：2 271–2 278.
[10] 李国维，余亮，吴玉财，等. 预应力喷砂玻璃纤维聚合物锚杆的黏结损伤[J]. 岩石力学与工程学报，2014，33(8)：1 711–1 719.(LI Guowei，YU Liang，WU Yucai，et al. Bond damage of prestressed sand-coated glass fiber reinforced polymer anchor[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(8)：1 711–1 719.(in Chinese))
[11] 罗小勇，唐谢兴，孙奇，等. 冻融循环作用下GFRP筋黏结性能试验研究[J]. 铁道科学与工程学报，2014，11(5)：1–4.(LUO Xiaoyong，TANG Xiexing，SUN Qi，et al. Experimental study on bond behavior of GFRP rebar under freeze-thaw cycles[J]. Journal of Railway Science and Engineering，2014，11(5)：1–4.(in Chinese))
[12] 贾新，袁勇，李焯芬. 新型玻璃纤维增强塑料砂浆锚杆的黏结性能试验研究[J]. 岩石力学与工程学报，2006，25(10)：2 108–2 114. (JIA Xin，YUAN Yong，LI Chaofen. Experimental study on bond behavior of new type cement grouted GFRP bolts[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(10)：2 108–2 114.(in Chinese))
[13] 李国维，高磊，黄志怀，等. 全长黏结玻璃纤维增强聚合物锚杆破坏机制拉拔模型试验[J]. 岩石力学与工程学报，2007，26(8)：1 653–1 663.(LI Guowei，GAO Lei，HUANG Zhihuai，et al. Pull-out model experiment on failure mechanism of full-length bonding glass fiber reinforced polymer rebar[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(8)：1 653–1 663.(in Chinese))
[14] 刘颖浩，袁勇. 全螺纹GFRP黏结型锚杆锚固性能试验研究[J]. 岩石力学与工程学报，2010，29(2)：394–400.(LIU Yinghao，YUAN Yong. Experimental research on anchorage performance of full-thread GFRP bonding anchor bolts[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(2)：394–400.(in Chinese))
[15] 罗小勇，唐谢兴，匡亚川，等. GFRP锚杆锚固黏结性能试验研究[J]. 铁道科学与工程学报，2015，12(3)：521–527.(LUO Xiaoyong，TANG Xiexing，KUANG Yachuan，et al. Test research on anchorage adhesive property of GFRP anchor bolt[J]. Journal of Railway Science and Engineering，2015，12(3)：521–527.(in Chinese))
[16] 李金峰，张景科，王南，等. 夯筑土遗址木锚杆四锚系统锚固机制物理模型试验研究[J]. 岩石力学与工程学报，2019，38(11)：2 321–2 331.(LI Jinfeng，ZHANG Jingke，WANG Nan，et al. Physical model test on working mechanisms of an anchor group system with four wood bolts in rammed earthen sites[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(11)：2 321–2 331.(in Chinese))
[17] 中华人民共和国行业标准编写组. JGJ 476—2019 建筑工程抗浮技术标准[S]. 北京：中国建筑工业出版社，2019.(The Professional Standards Compilation Group of People¢s Republic of China. JGJ 476—2019 Technical standard for building engineering against uplift[S]. Beijing：China Architecture and Building Press，2019.(in Chinese))
[18] 中华人民共和国行业标准编写组. JGJ 120—2012 建筑基坑支护技术规程[S]. 北京：中国建筑工业出版社，2012.(The Professional Standards Compilation Group of People¢s Republic of China. JGJ 120—2012 Technical specification for retaining and protection of building foundation excavations[S]. Beijing：China Architecture and Building Press，2012.(in Chinese))
[19] 李国维，郑诚，陈圣刚，等. 引江济淮软岩全黏结GFRP筋锚固蜕化现场实验[J]. 水利学报，2017，48(7)：825–836.(LI Guowei，ZHENG Cheng，CHEN Shenggang，et al. Bond degeneration of fully grouted GFRP bar in submerged soft rock in diversion of water from Changjiang River to Huaihe River[J]. Journal of Hydraulic Engineering，2017，48(7)：825–836.(in Chinese))
[20] 白晓宇，张明义，刘鹤，等. 风化岩地基全螺纹玻璃纤维增强聚合物抗浮锚杆承载特征现场试验[J]. 岩土力学，2014，35(9)：2 464–2 472.(BAI Xiaoyu，ZHANG Mingyi，LIU He，et al. Field test on load-bearing characteristics of full-thread GFRP anti-floating anchor in weathered rock site[J]. Rock and Soil Mechanics，2014，35(9)：2 464–2 472.(in Chinese))
[21] 匡政，张明义，白晓宇，等. 风化岩地基GFRP抗浮锚杆力学与变形特性现场试验[J]. 岩土工程学报，2019，41(10)：1 882–1 892. (KUANG Zheng，ZHANG Mingyi，BAI Xiaoyu，et al. Field tests on mechanics and deformation properties of GFRP anti-floating anchors in decomposed rock foundation[J]. Chinese Journal of Geotechnical Engineering，2019，41(10)：1 882–1 892.(in Chinese))
[22] SOONG W H，RAGHAVAN J，RIZKALLA S H. Fundamental mechanisms of bonding of glass fiber reinforced polymer reinforcement to concrete[J]. Construction and Building Materials，2011，25(6)：2 813–2 821.
[23] WON J P，PARK C G，KIM H H，et al. Effect of fibers on the bonds between FRP reinforcing bars and high-strength concrete[J]. Composites Part B：Engineering，2008，39(5)：747–755.
[24] 黄志怀，李国维，王思敬，等. 不同围岩条件玻璃纤维增强塑料锚杆结构破坏机制现场试验研究[J]. 岩石力学与工程学报，2008，27(5)：1 008–1 018.(HUANG Zhihuai，LI Guowei，WANG Sijing，et al. Field test on pullout behaviors of anchorage structures with glass fiber reinforced plastic rods for different surrounding rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(5)：1 008–1 018.(in Chinese))
[25] 中华人民共和国国家标准编写组. GB 50086—2015岩土锚杆与喷射混凝土支护工程技术规范[S]. 北京：中国计划出版社，2015.(The National Standards Compilation Group of People¢s Republic of China. GB 50086—2015 Technical code for engineering of ground anchorages and shotcrete support[S]. Beijing：China Planning Press，2015.(in Chinese))
[26] 中华人民共和国行业标准编写组. YB/T 4659—2018抗浮锚杆技术规程[S]. 北京：冶金工业出版社，2018.(The Professional Standards Compilation Group of People¢s Republic of China. YB/T 4659—2018 Technical specification for anti-floating anchors[S]. Beijing：Metallurgical Industry Press，2018.(in Chinese))
[27] WANG Y Y，SANG S K，ZHANG M Y，et al. Investigation on in-situ test of penetration characteristics of open and closed PHC pipe piles[J]. Soils and Foundations，2021，61(4)：960–973.