大直径内置光纤光栅玻璃纤维增强聚合物锚杆梁杆黏结试验

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (347 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要纤维增强聚合物筋是一种新型复合材料，具有优异的力学性能和耐腐蚀性能，用其替代钢筋用于边坡加固是解决锚杆耐久性问题的途径之一。采用内置光纤光栅的GFRP筋制作锚杆结构模型，用空心液压千斤顶施加拉拔荷载，用光栅传感技术监测杆体应变，研究大直径喷砂GFRP锚杆在框架梁锚固条件下的受力破坏机制。研究表明，本试验大直径25 mm GFRP锚杆在拉拔力、平均黏结强度方面均达到相同直径螺纹钢筋锚杆的设计指标，最合理的框架梁厚度为30～40 cm；瞬时荷载循环对GFRP锚杆界面黏结状态无明显影响；持续荷载作用下杆体界面的黏结状态会发生蜕化，随时间延续蜕化向深部扩展，荷载越大扩展深度越大，蜕化速度越快；光纤光栅监测技术是发现和观察锚杆界面黏结状态蜕化过程的有效手段。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩土工程, 锚杆, 耐久性, 玻璃纤维增强聚合物, 光纤光栅, 黏结性能

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.

Key words： geotechnical engineering anchor rod durability glass fiber reinforced polymer(GFRP) fiber bragg grating(FBG) bond behavior

收稿日期: 2012-10-29

引用本文:

李国维1，2，戴剑3，倪春2，4，殷建华5，余亮3. 大直径内置光纤光栅玻璃纤维增强聚合物锚杆梁杆黏结试验[J]. 岩石力学与工程学报, 2013, 32(7): 1449-1457.
LI Guowei1，2，DAI Jian3，NI Chun2，4，YIN Jianhua5，YU Liang3. BOND BEHAVIOR BETWEEN CONCRETE FRAME BEAM AND LARGE-DIAMETER GLASS FIBER REINFORCED POLYMER(GFRP) ANCHOR ROD WITH BUILT-IN FIBER BRAGG GRATING SENSOR. , 2013, 32(7): 1449-1457.

链接本文:

http://www.rockmech.org/CN/Y2013/V32/I7/1449

[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. " target="_blank">
[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)) " target="_blank">
[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. " target="_blank">
[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)) " target="_blank">
2	813-2 821. " target="_blank">
[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)) " target="_blank">
[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)) " target="_blank">
[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)) " target="_blank">
[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))
[6]	MALVAR L J. Tensile and bond properties of GFRP reinforcing bars[J]. ACI Materials，1995，92(3)：276-285. " target="_blank">
[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. " target="_blank">
[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.
[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)： " target="_blank">
[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)) " target="_blank">
[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)) " target="_blank">
[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)) " target="_blank">
[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)) " target="_blank">