应用玻璃纤维锚杆加固公路边坡现场试验

Abstract
Figure/Table
References (16)
Related Citation (15)

Download: PDF (620 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Glass fiber reinforced polymer(GFRP) anchor is a new composite reinforcement material composed of resin and glass fiber；and it has good corrosion resistance and mechanical properties. The tensile，creep behaviors and temperature effect of GFRP were measured in laboratory by strength test，temperature test and creep test. According to test data，the feasibility of GFRP applied to permanent reinforcement engineering is discussed. The tests show that the GFRP anchor is brittle material whose elastic modulus is approximately 40 GPa and yield strength can reach to 400 MPa. The thermal stability of GFRP is similar to HRB335 steel applied to engineering within working temperature range and under working load conditions. GFRP can not take place sustained creep deformations under design load for anchor. Guangdong—Jiangxi highway K3+728–904 right slope reinforcement adopted GFRP anchor frame beam structure as permanent reinforcement engineering. Through in-situ monitoring of GFRP anchor stress，deformation of reinforced slope and whole displacement，the reliability of permanent GFRP anchor reinforcement structure is discussed. The monitoring data show that the stress variation of GFRP anchor corresponds with the loading variation of slope reinforced by GFRP anchor；There is no stress relaxation under the long-term effect of loads，and GFRP anchor could still undertake some additional loads；Its stress distribution of GFRP anchors is different from that of steel anchors because of the difference in elastic moduli，and GFRP anchor is more suitable to soil slope reinforcement which usually has larger deformation than rock slope.

Key words： slope engineering glass fiber reinforced polymer(GFRP) GFRP anchor slope reinforcement field test highway

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Guowei1
	2
	LIU Chaoquan3
	HUANG Zhihuai1
	4
	CAI Yeqing5

Cite this article:

LI Guowei1,2,LIU Chaoquan3, et al. IN-SITU TEST OF GLASS FIBER REINFORCED POLYMER ANCHOR ON HIGHWAY SLOPE REINFORCEMENT[J]. , 2010, 29(S2): 4056-4062.

URL:

https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/4056

[1] 程良奎. 岩土锚固的现状与发展[J]. 土木工程学报，2001，34(3)：7–12.(CHENG Liangkui. Present status and development of ground anchorages[J]. China Civil Engineering Journal，2001，34(3)：7–12.(in Chinese))

[2] 曾庆敦. 复合材料的细观破坏机制与强度[M]. 北京：科学出版社，2002.(ZENG Qingdun. The mesoscopic damage mechanism and strength of composite materials[M]. Beijing：Science Press，2002.(in Chinese))

[3] American Concrete Institute. Guide for the design and construction of concrete reinforced with FRP bars[R]. Farmington Hills，Michigan：American Concrete Institute，2006.

[4] American Concrete Institute. State-of-the-art report on fiber-reinforced plastic reinforcement for concrete structures[R]. ACI 440R，1996.

[5] MACHIDA A. Recommendation for design and construction of concrete structures using continuous fiber reinforcing materials[R]. Tokyo，Japan：Research Committee on Continuous Fiber Reinforcing Materials，1997.

[6] 袁勇，贾新，闫富友. 岩石GFRP锚杆的可行性研究[J]. 公路交通科技，2004，21(9)：13–15.(YUAN Yong，JIA Xin，YAN Fuyou. Feasibility study on GFRP rock bolts[J]. Journal of Highway and Transportation Research and Development，2004，21(9)：13–15.(in Chinese))

[7] 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))

[8] 刘汉东，于新政，李国维. GFRP锚杆拉伸力学性能试验研究[J]. 岩石力学与工程学报，2005，24(20)：3 719–3 723.(LIU Handong，YU Xinzheng，LI Guowei. Experimental study on tensile mechanical properties of glass fiber reinforced plastic rebar[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(20)：3 719–3 723.(in Chinese))

[9] 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))

[10] 周继凯，杜钦庆，陈诗学，等. GFRP筋拉伸力学性能温度效应试验研究[J]. 岩石力学与工程学报，2008，27(增1)：2 707–2 714.(ZHOU Jikai，DU Qinqing，CHEN Shixue，et al. Experimental research on thermal effect of tensile mechanical properties of GFRP rebar[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.1)：2 707–2 714.(in Chinese))

[11] 刘轶群，董冬，胥德峰. 温度对40Cr钢弹性模量影响的试验研究[J]. 试验技术与试验机，2005，45(1–2)：23–24.(LIU Yiqun，DONG Dong，XU Defeng. Experimental study of effect of temperature on elastic modulus of 40Cr steel[J]. Test Technology and Testing Machine，2005，45(1–2)：23–24.(in Chinese))

[12] 杨柳，罗迎社，许建民，等. 20号钢热拉伸流变特性的研究(I)[J]. 湘潭大学自然科学学报，2004，26(2)：37–40.(YANG Liu，LUO Yingshe，XU Jianmin，et al. Study of rheological properties of steel #20 under thermal tension(part I)[J]. Natural Science Journal of Xiangtan University，2004，26(2)：37–40.(in Chinese))

[13] 李国维，黄志怀，张丹，等. 玻璃纤维增强聚合物锚杆承载特征现场试验[J]. 岩石力学与工程学报，2006，25(11)：2 240–2 246.(LI Guowei，HUANG Zhihuai，ZHANG Dan，et al. Field test on load- bearing character of glass fiber reinforced polymer bolt[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(11)：2 240– 2 246.(in Chinese))

[14] 黄志怀，李国维，王思敬，等. 粤赣高速公路K35高边坡加固效果监测与评价[J]. 岩土力学，2008，29(10)：2 783–2 788.(HUANG Zhihuai，LI Guowei，WANG Sijing，et al. Monitoring and evaluation high slope K35 of Guangdong—Jiangxi expressway[J]. Rock and Soil Mechanics，2008，29(10)：2 783–2 788.(in Chinese))

[15] 李国维，邱利锐，马晓辉，等. GFRP筋锚杆框架梁加固公路边坡应用试验[C]// 全国第9次水利水电地基与基础工程学术会议论文集. [S. l.]：[s. n.]，2007：446–452.(LI Guowei，QIU Lirui，MA Xiaohui，et al. Application test of anchor frame beams of GFRP rebar to highway slope reinforcement[C]// Proceedings of 9th National Conference of Ground and Foundation Engineering in Hydraulic and Hydroelectric Engineering. [S. l.]：[s. n.]，2007：446–452.(in Chinese))

[16] 黄蕾鸣，黄志怀，李维朝，等. GFRP筋材替代钢材锚固高边坡应用试验[J]. 中外公路，2005，25(6)：144–147.(HUANG Leiming，HUANG Zhihuai，LI Weichao，et al. Experimental research on thermal effect of tensile mechanical properties of GFRP rebar[J]. Journal of China and Foreign Highway，2005，25(6)：144–147.(in Chinese))