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工程力学  2015 

基于裸光纤光栅传感技术GFRP抗浮锚杆荷载传递机制的原位试验研究

DOI: 10.6052/j.issn.1000-4750.2014.05.0461, PP. 172-181

Keywords: GFRP锚杆,裸光纤光栅,拉拔试验,平均黏结强度,荷载传递,破坏机制

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Abstract:

基于3根全螺纹GFRP抗浮锚杆现场拉拔破坏性试验,成功地将植入式裸光纤光栅传感技术应用于抗浮锚杆拉拔试验中,研究了全长黏结GFRP抗浮锚杆在各级荷载作用下的承载特性、荷载传递特征及破坏机制。研究表明:植入式裸光纤光栅传感技术有其独特的优越性,不会对锚杆自身造成损伤;GFRP抗浮锚杆破坏以杆体基体材料剪切破坏为主,锚固长度为5.0m,?28mm锚杆极限抗拔承载力为400kN,能够满足工程需求;锚杆的轴向应力主要集中在距孔口约3.0m的区域,且随着锚固深度的增加迅速衰减;剪应力峰值出现在距离孔口以下约0.8m的位置,随着荷载的增加,剪应力曲线的峰值逐渐增大并向深部移动。在此基础上,进一步分析论证了GFRP抗浮锚杆的破坏机制,为GFRP抗浮锚杆的工程应用提供了理论依据。

References

[1]  Al-Zahrani M M. Bond behavior of fiber reinforced plastic reinforcements with concrete [D]. University Park, PA: The Pennsylvania State University, 1995.
[2]  Kilic A, Yasar E, Celik A G. Effect of grout properties on the pull-out load capacity of fully grouted rock bolt [J]. Tunneling and Underground Space Technology, 2002, 17(4): 355―362.
[3]  高丹盈, Brahim B. 纤维聚合物筋混凝土的粘结机制及锚固长度的计算方法[J]. 水利学报, 2000(11): 70―78. Gao Danying, Brahim B. Bonding mechanism and calculating method for embedded length of fiber reinforced polymer rebars in concrete [J]. Journal of Hydraulic Engineering, 2000(11): 70―78. (in Chinese)
[4]  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): 1008―1018. 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): 1008―1018. (in Chinese)
[5]  尤春安. 全长粘结式锚杆的受力分析[J]. 岩石力学与工程学报, 2000, 19(3): 339―341. You Chun’an. Mechanical analysis on wholly grouted anchor [J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(3): 339―341. (in Chinese)
[6]  Cosenza E, Manfredi G, Realfonzo R. Behavior and modeling of bond of FRP rebars to concrete [J]. Journal of composites for construction, 1997, 1(2): 40―51.
[7]  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): 2813―2821.
[8]  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.
[9]  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): 1008―1018. 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): 1008―1018. (in Chinese)
[10]  GB50086-2001, 锚杆喷射混凝土支护技术规范[S]. 北京: 中国计划出版社, 2001. GB50086-2001, Specifications for bolt-shotcrete support [S]. Beijing: China Planning Press, 2001. (in Chinese)
[11]  Harris B. 工程复合材料[M]. 陈祥宝, 张宝艳, 译. 北京: 化学工业出版社, 2004: 69―80. Harris B. Engineering composite materials [M]. Translated by Cheng Xiangbao, Zhang Baoyan. Beijing: Chemical Industry Press, 2004: 69―80. (in Chinese)
[12]  (上接第171页)
[13]  卢亦焱, 薛继锋, 张学朋, 龚田牛. 外套钢管自密实混凝土加固钢筋混凝土中长圆柱轴压性能试验研究[J]. 土木工程学报, 2013, 46(2): 100―107. Lu Yiyan, Xue Jifeng, Zhang Xuepeng, Gong Tianniu. Experimental study on behavior of middle long RC column strengthened by self-compacting concrete and steel tube under the axial load [J]. China Civil Engineering Journal. 2013 ,46(2): 100―107. (in Chinese)
[14]  卢亦焱, 龚田牛, 张学朋, 薛继锋. 外套钢管自密实混凝土加固钢筋混凝土圆柱轴压受力分析[J]. 工程力学, 2013, 30(9): 158―165. Lu Yiyan, Gong Tianniu, Zhang Xuepeng, Xue Jifeng. Theoretical analysis of circular RC column strengthened with self-compacting concrete filled circular steel jacket under axial loading [J]. Engineering Mechanics, 2013, 30(9): 158―165. (in Chinese)
[15]  陈宝春, 王来永, 欧智菁, 韩林海. 钢管混凝土偏心受压应力-应变试验研究[J]. 工程力学, 2003, 20(6): 154―159. Chen Baochun, Wang Laiyong, Ou Zhiqing, Han Linhai. Experimental study of stress-strain relation of eccentrically-loaded concrete-filled steel tubular columns [J]. Engineering Mechanics, 2003, 20(6): 154―159. (in Chinese)
[16]  陈宝春, 陈友杰, 王来永, 韩林海. 钢管混凝土偏心受压应力-应变分析模型研究[J]. 中国公路学报, 2004, 17(1): 24―28. Chen Baochun, Chen Youjie, Wang Laiyong, Han Linhai. Study of stress-strain relation of concrete filled steel tubular eccentric compression column [J]. China Journal of Highway and Transport, 2004, 17(1): 24―28. (in Chinese)
[17]  罗小东. 光纤光栅振动传感关键技术研究[D]. 西安: 西北大学, 2008. Luo Xiaodong. Study on the key technology of fiber gratings vibration sensing [D]. Xi’an: Northwest University, 2008. (in Chinese)
[18]  夏元友, 芮瑞, 梁磊, 等. 光纤渗压传感器与公路软基监控试验研究[J]. 岩土工程学报, 2005, 27(2): 162―166. Xia Yuanyou, Rui Rui, Liang Lei, et al. An attempt of embedding fiber optic Bragg grating sensors in freeway foundation to detect the pore-water pressure [J]. Chinese Journal of Geotechnical Engineering, 2005, 27(2): 162―166. (in Chinese)
[19]  詹胜, 谭华耀, 徐幼麟, 等. 裸光纤光栅及光纤力锤在大桥模型试验中的应用[J]. 工程力学, 2011, 28(3): 103―108. Zhan Sheng, Tan Huayao, Xu Youlin, et al. Applications of naked optical fiber bragg grating and fiber optic impact hammer in bridge model test [J]. Engineering Mechanics, 2011, 28(3): 103―108. (in Chinese)
[20]  苏胜昔, 杨昌民, 范喜安. 光纤光栅传感技术在高速公路隧道围岩变形实时监测中的应用[J]. 工程力学, 2014, 31(增刊1): 134―138, 144. Su Shengxi, Yang Changmin, Fan Xi’an. Application of fiber bragg grating sensor technology in highway tunnel surrounding rock deformation and real-time monitoring [J]. Engineering Mechanics, 2014, 31(Suppl 1): 134―138, 144. (in Chinese)
[21]  黄广龙, 张枫, 徐洪钟, 等. FBG传感器在深基坑支撑应变监测中的应用[J]. 岩土工程学报, 2008, 30(增刊): 436―440. Huang Guanglong, Zhang Feng, Xu Hongzhong, et al. Strain monitoring of interior bracing in deep foundation pit by FBG sensors [J]. Chinese Journal of Geotechnical Engineering, 2008, 30(Suppl): 436―440. (in Chinese)
[22]  邱松, 顾浩, 曹进捷, 等. FBG传感技术在混凝土预制桩水平载荷试验中的应用[J]. 岩土工程学报, 2011, 33(增刊2): 105―107. Qiu Song, Gu Hao, Cao Jinjie, et al. Application of FBG sensing technology in lateral load tests on precast concrete piles [J]. Chinese Journal of Geotechnical Engineering, 2011, 33(Suppl 2): 105―107. (in Chinese)
[23]  隋海波, 施斌, 张丹, 等. 基于BOTDR的锚杆拉拔试验研究[J]. 岩土工程学报, 2008, 30(5): 755―759. Sui Haibo, Shi Bin, Zhang Dan, et al. BOTDR-based pull-out tests on anchor bolts [J]. Chinese Journal of Geotechnical Engineering, 2008, 30(5): 755―759 (in Chinese)
[24]  Sebastian W, Gegeshidze G, Luke S. Positive and negative moment behaviors of hybrid members comprising cellular GFRP bridge decking epoxy-bonded to reinforced concrete beams [J]. Composites Part B: Engineering, 2013, 45(1): 486―496.
[25]  Lee H K, Pyo S H, Kim B R. On joint strengths, peel stresses and failure modes in adhesively bonded double-strap and supported single-lap GFRP joints [J]. Composite Structures, 2009, 87(1): 44―54.
[26]  李国维, 刘朝权, 黄志怀, 等. 应用玻璃纤维锚杆加固公路边坡现场试验[J]. 岩石力学与工程学报, 2010, 29(增刊2): 4056―4062. Li Guowei, Liu Chaoquan, Huang Zhihuai, et al. In-situ test of glass fiber reinforced polymer anchor on highway slope reinforcement [J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(Suppl 2): 4056―4062. (in Chinese)
[27]  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)
[28]  李国维, 戴剑, 倪春, 等. 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 Guowei, Dai Jian, Ni Chun, et al. Bond behavior between concrete frame beam and large-diameter glass fiber reinforced polymer (GFRP) anchor rod with built-in fiber bragg grating sensor [J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(7): 1449―1457. (in Chinese)
[29]  Zhu Honghu, Yin Jianhua, Youngman Albert T, Jin Wei. Field pullout testing and performance evaluation of GFRP soil nails [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2011, 137(7): 633―642.
[30]  黄志怀, 刘汉东. BOTDR技术监测GFRP锚杆应变的试验研究[J]. 华北水利水电学院学报, 2005, 26(2): 49―51. Huang Zhihuai, Liu Handong. Experimental study of the applications of BOTDR technology to strain monitoring of GFRP anchor bar [J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power, 2005, 26(2): 49―51. (in Chinese)
[31]  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): 1653―1663. Li Guowei, Gao Lei, Huang Zhihuai, et al. Pull-out model experiment on failure mechanism of pull-length bonding glass fiber reinforced polymer rebar [J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(8): 1653―1663. (in Chinese)
[32]  JGJ120-2012, 建筑基坑支护技术规程[S]. 北京: 中国建筑工业出版社, 2012. JGJ120-2012, Technical specification for retaining and protection of building foundation excavations [S]. Beijing: China Architecture and Building Press, 2012. (in Chinese)

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