|
|
|
| BOND BEHAVIOR BETWEEN CONCRETE FRAME BEAM AND LARGE-DIAMETER GLASS FIBER REINFORCED POLYMER(GFRP) ANCHOR ROD WITH BUILT-IN FIBER BRAGG GRATING SENSOR |
| LI Guowei1，2，DAI Jian3，NI Chun2，4，YIN Jianhua5，YU Liang3 |
| (1. Key Laboratory of Ministry of Education for Geotechnique and Embankment Engineering，Hohai University，Nanjing，Jiangsu 210098，China；2. Highway and Railway Engineering Institute，Hohai University，Nanjing，Jiangsu 210098，China；3. Geotechnical Research Institute，Hohai University，Nanjing，Jiangsu 210098，China；4. Huaihe River Project Construction Authority of Huaihe River Water Resources Committee，Bangbu，Anhui 233001，China；5. Hong Kong Polytechnic University，Hung Hom，Kowloon，Hong Kong，China) |
|
|
|
|
Abstract Fiber reinforced polymer(FRP) is a new composite material with excellent mechanical properties and corrosion resistance. It is a significant way to solve the durability problem of anchor rod by substituting this polymer for steel bars. Using anchor-rod-structure specimen made from glass fiber reinforced polymer(GFRP) bars with fiber grating installed internally，loaded by hollow hydraulic jack，monitored by grating sensing technology，this paper focuses on the failure mechanism of large-diameter sand-coated GFRP rebar in the frame beams under the condition of anchoring. Research shows that in the experiment，in terms of tensile force and average bond strength，this large-diameter(25 mm) GFRP rebar has reached the design strength of ribbed steel with the same diameter. The most reasonable thickness of frame beam varies from 30 to 40 cm. Transient loading cycles have no obvious influence on GFRP rebar interface-bond state；the degradation of rod body interface-bond state will occur under sustained loads，and it continues to develop and expand to the deeper part. Moreover，the greater the load applied is，the deeper the depth extended to is and the faster the degradation proceeds. Optical fiber grating monitoring technology is an effective method to find and observe the interface-bond state degradation process.
|
|
Received: 29 October 2012
|
|
|
|
| [1] 仲伟秋，王海超，何世钦. 受腐蚀钢筋混凝土结构性能的研究[J].辽宁工程技术大学学报：自然科学版，2003，22(1)：51–53.(ZHONG Weiqiu，WANG Haichao，HE Shiqin. Study on performance of corroded reinforced concrete structures[J]. Journal of Liaoning Technical University：Natural Science，2003，22(1)：51–53.(in Chinese))
[2] 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))
[3] 叶列平，冯 鹏. FRP在工程结构中的应用与发展[J]. 土木工程学报，2006，39(3)：24–36.(YE Lieping，FENG Peng. Applications and development of fiber-reinforced polymer in engineering structures[J]. Chinese Jounal of Geotechnical Engineering，2006，39(3)：24–36.(in Chinese))
[4] 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))
[5] ACHILLIDES Z，PILAKOUTAS K. Bond behavior of fiber reinforced polymer bars under direct pullout conditions[J]. Journal of Composites for Construction，2004，8(2)：173–181.
[6] MALVAR L J. Tensile and bond properties of GFRP reinforcing bars[J]. ACI Materials，1995，92(3)：276–285.
[7] 朱浮声，张海霞. FRP 筋与混凝土黏结滑移力学性能研究综述[J] .混凝土，2006，(2)：12–15.(ZHU Fusheng，ZHANG Haixia. Bond slip mechanism of FRP bars and concrete[J]. Concrete，2006，(2)：12–15.(in Chinese))
[8] PECCE M，MANFREDI G，REALFONZO R，et al. Experimental and analytical evaluation of bond properties of GFRP bars[J]. Journal of Materials in Civil Engineering，2001，13(4)：282–290.
[9] MARTA B，LLUÍS T，ALBERT T. Experimental study of bond behaviour between concrete and FRP bars using a pull-out test[J]. Composites Part B：Engineering，2009，40(8)：784–797.
[10] MASMOUDI R，MASMOUDI A，BEN OUEZDOU M，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.
[11] ABBASI A，HOGG P J. Temperature and environmental effects on glass fiber rebar：modulus，strength and interfacial bond strength with concrete[J]. Composites Part B：Engineering，2005，36(5)：394–404.
[12] 薛伟辰. 不同试验方法对GFRP筋黏结强度的影响[J]. 玻璃钢/复合材料，2003，(5)：10–13.(XUE Weichen. Study of influence of different test methods on bond strength of GFRP rebars[J]. Fiber Reinforced Plastics/Composites，2003，(5)：10–13.(in Chinese))
[13] 郭恒宁，张继文. FRP筋与混凝土黏结滑移性能的试验研究[J]. 混凝土，2006，(8)：1–4.(GUO Hengning，ZHANG Jiwen. Experimental study of bond between FRP-concrete[J]. Concrete，2006，(8)：1–4.(in Chinese))
[14] COSENZA E，MANFREDI G，REALFONZO R. Behavior and modeling of bond of FRP rebars to concrete[J]. Journal of Composites for Construction，1997，2(1)：40–51.
[15] 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.
[16] 尤春安. 全长黏结式锚杆的受力分析[J]. 岩石力学与工程学报，2000，19(3)：399–341.(YOU Chun?an. Mechanical analysis of wholly grouted anchor[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(3)：399–341.(in Chinese))
[17] 黄志怀，李国维，王思敬. 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. 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))
[18] 李国维，黄志怀，张 丹，等. 玻璃纤维增强聚合物锚杆现场承载特征现场试验[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 GFRP anchor[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(11)：2 240–2 246.(in Chinese)) |
| [1] |
HUANG Man1, 2, WANG Yuhao1, 2, TAO Zhigang3, HONG Chenjie1, 2*, WENG Hanqian3, ZHANG Guangtao1, 2, ZHANG Haijiang1, 2. Size effect on anchorage resistance of Quasi-NPR bolt[J]. , 2026, 45(5): 1477-1488. |
|
|
|
|
2013, Vol. 32 
