泥质砂软岩边坡加固锚杆黏结疲劳特征原位试验

doi:10.13722/j.cnki.jrme.2020.0201

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摘要引江济淮河(航)道工程水下软岩边坡采用钢筋锚杆加固，通过原位试验研究现有检测方法对软岩加固锚杆黏结状态的影响。研究表明，锚杆承担荷载越大，有效锚固深度越大，锚杆体界面黏结损伤程度与荷载大小正相关，黏结损伤主要受前期荷载大小影响，加荷次数导致的黏结损伤相较于前者是次要的；加荷过程中分级荷载的持荷时间越长，相同量级荷载引起的锚杆弹性伸长量越大，锚杆体界面黏结损伤程度与分级荷载持荷时间正相关；锚杆端部塑性位移是在卸荷过程中产生的，来自于黏结体围岩界面的相对位移，主要受卸荷方式影响，卸荷越快塑性位移越大，与分级加荷的持荷时间正相关；结合4种检测方法得到的黏结损伤特征，提出检测泥质砂软岩加固锚杆锚固状态更科学的试验方法。

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	李国维1
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	赫新荣3
	吴建涛2
	陈伟3
	熊力3
	曹雪山2

关键词 ：岩石力学, 软岩, 锚杆, 检测方法, 黏结损伤

Abstract：Steel bolts were used to reinforce the underwater soft rock slope of the Yangtze River-to-Huaihe River canal project. In order to study the influence of existing detection methods on the bonding state of steel bolts in soft rocks，insitu test was carried out. The results show that the effective anchoring depth increases with increasing the load exerted on the bolt. The degree of bond damage at the interface of the bolt body is positively correlated with the magnitude of the load，and compared with the load，the loading number has minimal effect on bond damage. Longer loading time of incremental graded load will result in greater increment of the elastic elongation of the bolt under the same magnitude of the load，indicating that the degree of bond damage at the interface of the bolt body is positively correlated with the time during which the graded load is maintained. The plastic displacement at the end of the bolt is generated during the unloading process，which comes from the relative displacement at the interface between the bond body and surrounding rock and is mainly affected by the method of unloading. The faster the unloading speed is，the greater the plastic displacement is. The plastic displacement is positively correlated with the time during which the incremental graded load is maintained. Combining four different detection methods for the bond damage characteristics，a more scientific testing method for detecting the anchoring state of reinforcement bolts in soft shaly sandstone was proposed.

Key words： rock mechanics soft rock bolts detection method bond damage

引用本文:

李国维1，2，赫新荣3，吴建涛2，陈伟3，熊力3，曹雪山2. 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): 1729-1738.
LI Guowei1，2，HE Xinrong3，WU Jiantao2，CHEN Wei3，XIONG Li3，CAO Xueshan2. Insitu test on bond fatigue characteristics of bolts for reinforcing soft shaly sandstone slopes. , 2020, 39(9): 1729-1738.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2020.0201 或 http://rockmech.whrsm.ac.cn/CN/Y2020/V39/I9/1729

[1]	程良奎，韩军，张培文. 岩土锚固工程的长期性能与安全评价[J]. 岩石力学与工程学报，2008，27(5)：865-872.(CHENG Liangkui，HAN Jun，ZHANG Peiwen. Long-term performance and safety assessment of anchorage in geotechnical engineering[J]. Journal of Rock Mechanics and Engineering，2008，27(5)：865-872.(in Chinese))
[3]	张乐文，李术才. 岩土锚固的现状与发展[J]. 岩石力学与工程学报，2003，22(增1)：2 214-2 221.(ZHANG Lewen，LI Shucai. Current state and development of anchorage support for rocks and soils[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(Supp.1)：2 214-2 221.(in Chinese))
[5]	伊克良，徐华斌，胡佳兴. 全长黏结型岩石锚杆抗拔力检测问题的探讨[J]. 有色金属设计，2004，(2)：12-17.(YI Keliang，XU Huabin，HU Jiaxing. Approach on detection of anti-drawing force for full-length bonding rockbolt[J]. Nonferrous Metal Design，2004，(2)：12-17.(in Chinese))
[7]	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)：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))
[9]	PHILLIPS S. Factors affecting the design of anchorages in rocks[R]. London：Cementation Research Ltd.，1970.
[10]	HANSOR N W. Influence of surface roughness of prestressing strand on band erformance[J]. Journal of Prestressed Concrete Institute，1969，14(1)：32-45.
[12]	孙益振，郑卫锋，范志强. 输电线路节理化岩体注浆锚杆基础抗拔力模型试验研究[J]. 岩土力学，2012，33(1)：78-82.(SUN Yizhen，ZHENG Weifeng，FAN Zhiqiang. Tension model test research on grouted bolts foundation in jointed rock masses for transmission lines[J]. Rock and Soil Mechanics，2012，33(1)：78-82.(in Chinese))
[14]	STILLBORG B. Experimental investigation of steel cables for rock reinforcement in hard rock[Ph. D. Thesis][D]. Sweden：Lulea University，1984.
[16]	杨松林，徐卫亚，黄启平. 节理剪切过程中锚杆的变形分析[J]. 岩石力学与工程学报，2004，23(19)：3 268-3 273.(YANG Songlin，XU Weiya，HUANG Qiping. Analysis on the bolt deformation as result of joint shear displacement[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 268-3 273.(in Chinese))
[18]	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. Field experiment of anchorage and degeneration of fully bonded GFRP bars in soft rocks in the water diversion project from Yangtze to Huaihe River[J]. Journal of Hydraulic Engineering，2017，48(7)：825-836.(in Chinese))
[19]	李国维，于威，李峰，等. 引江济淮软岩钢筋、GFRP筋锚杆承载差异试验[J]. 岩石力学与工程学报，2018，37(3)：601-610.(LI Guowei，YU Wei，LI Feng，et al. Experiment on the difference of load bearing of GFRP and steel bars in soft-rock slopes of water diversion from Yangtze to Huai[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(3)：601-610.(in Chinese))
[21]	中华人民共和国国家标准编写组. GB50021—2001岩土工程勘察规范[S]. 北京：中国建筑工业出版社，2002.(The National Standard Compilation Group of the People's Republic of China. GB50021—2001 Code for investigation of Geotechnical Engineering[S]. Beijing：China Building Industry Press，2002.(in Chinese))
[23]	张洁，尚岳全，叶彬. 锚杆临界锚固长度解析计算[J]. 岩石力学与工程学报，2005，24(7)：1 134-1 138.(ZHANG Jie，SHANG Yuequan，YE Bin. Analytical calculations of critical anchorage length of bolts[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(7)：1 134-1 138.(in Chinese))
[2]	周青春，余仁强，袁卫兵. 全长黏结锚杆在崩滑体治理工程中的应用[J]. 岩土力学，2005，26(增2)：163-166.(ZHOU Qingchun，YU Renqiang，YUAN Weibing. The application of full-length bond bolt in landslide control engineering[J]. Rock and Soil Mechanics，2005，26(Supp.2)：163-166.(in Chinese))
[4]	杨立，官见荣，华洪勋. 支护锚杆检测在各规范中相关规定的比较[J]. 工程质量，2015，33(3)：13-20.(YANG Li，GUAN Jianrong，HUA Hongxun. Comparison of the provisions of supporting bolt detection in relevant codes[J]. Engineering Quality，2015，33(3)：13-20.(in Chinese))
[6]	周浩，肖明，陈俊涛. 大型地下洞室全长黏结式岩石锚杆锚固机制研究及锚固效应分析[J]. 岩土力学，2016，37(5)：1 503-1 511.(ZHOU Hao，XIAO Ming，CHEN Juntao. Study of anchoring mechanism and analysis of anchoring effect of fully grouted rock anchor in large-scale underground caverns[J]. Rock and Soil Mechanics，2016，37(5)：1 503-1 511.(in Chinese))
[8]	黄明华，周智，欧进萍. 全长黏结式锚杆锚固段荷载传递机制非线性分析[J]. 岩石力学与工程学报，2014，33(增2)：3 992- 3 997.(HUANG Minghua，ZHOU Zhi，OU Jinping. Nonlinear analysis on load transfer mechanism of wholly grouted anchor rod along anchoring section[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(Supp.2)：3 992-3 997.(in Chinese))
[11]	JARRED D J，HABERFIELD C M. Tendon-grout interface performance in grouted anchors[C]// Ground Anchorages and Anchored Structures. London，[s. n. ]，1997：3-13
[13]	HYETT A J，BAWDEN W F，REICHERT R D. The effect of rock mass confinement on the bond strength of fully grouted cable bolts[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts，1992，29(5)：503-524.
[15]	吕爱钟，刘宜杰，张晓莉. 圆形隧洞全长黏结锚杆力学分析的解析方法[J]. 岩石力学与工程学报，2018，37(7)：1 561-1 573.(LV Aizhong，LIU Yijie，ZHANG Xiaoli. A theoretical solution for a circular tunnel reinforced by fully grouted rock bolts[J]. Journal of Rock Mechanics and Engineering，2018，37(7)：1 561-1 573.(in Chinese))
[17]	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 fibre reinforced polymer anchor[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(8)：1 711-1 719.(in Chinese))
[20]	陈圣刚，于威，李国维，等. 引江济淮试验工程河道边坡锚杆检测对比试验[J]. 水利水电科技进展，2017，37(6)：69-75.(CHEN Shenggang，YU Wei，LI Guowei，et al. A comparative study on different testing methods for canal slope reinforcement bars in the water diversion experimental project from yangtze to Huaihe River[J]. Progress in Water Resources and Hydropower Technology，2017，37(6)：69-75.(in Chinese))
[22]	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)：1 449-1 457.(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)：1 449-1 457.(in Chinese))
[24]	李夕兵，陈正红，曹文卓，等. 不同卸荷速率下大理岩破裂时效特性与机制研究[J]. 岩土工程学报，2017，39(9)：1565-1574.(LI Xibing，CHEN Zhenghong，CAO Wenzhuo，et al. Time-effect properties and mechanisms of marble failure under different unloading rates[J]. Chinese Journal of Geotechnical Engineering，2017，39(9)：1 565-1 574.(in Chinese))