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WANG Ping, FENG Tao, ZHU Yong-jian, YU Wei-jian. Fracture experiments on anchoring ordered multi-crack body in rock-like materials under uniaxial compression[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(9): 1644-1652. DOI: 10.11779/CJGE201509011
Citation: WANG Ping, FENG Tao, ZHU Yong-jian, YU Wei-jian. Fracture experiments on anchoring ordered multi-crack body in rock-like materials under uniaxial compression[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(9): 1644-1652. DOI: 10.11779/CJGE201509011

Fracture experiments on anchoring ordered multi-crack body in rock-like materials under uniaxial compression

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  • Received Date: September 27, 2014
  • Published Date: September 17, 2015
  • In order to study the anchoring mechanism of bolts on the ordered multi-crack body, the full-thread glass fiber reinforced plastic (GFRP) is taken as anchor bolts to fully grout the multi-crack body made from cement mortar to prefabricate test pieces under different anchor conditions. The fracture uniaxial compression tests on these pieces are performed using the RMT-150 servo testing machine. According to the results, the concept of the master crack is proposed, and it is recognized that the strength weakening of the ordered multi-crack body is caused by the perforation of master crack. The work mechanisms of the anchor bolts on the crack generation, expansion and perforation of multi-ordered crack rock-like body are studied from the microscopic aspect, and their effects on the peak strength, residual strength and deformation resistance are investigated from the macroscopic aspect. The result shows that the perforation pattern of the ordered multi-crack rock-like body is changed by the anchor bolts from the longitudinal-incline-horizontal pattern to the horizontal-longitudinal-incline one. The master cracks have longer perforation path and are limited by the anchor bolts. It is specifically indicated that the stress intensity factor of the pieces is changed, and the resistance to deformation, peak strength and residual strength are enhanced after anchored by bolts. However, it is not the situation that the more anchor bolts, the more strength of the ordered multi-crack rock-like body, that is, an appropriate density of anchor bolts will get a better support effect.
  • [1]
    赵延林, 万 文, 王卫军, 等. 类岩石裂纹压剪流变断裂与亚临界扩展试验及破坏机制[J]. 岩土工程学报, 2012, 34(6): 1050-1059. (ZHAO Yan-lin, WAN Wen, WANG Wei-jun, et al. Rrheologic fracture failure test of compressive-shear rock-like cracks and subcritical crack propagation test and fracture mechanism[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(6): 1050-1059. (in Chinese))
    [2]
    赵延林, 曹 平, 万 文, 等. 岩石裂纹亚临界扩展试验与压剪流变断裂模型[J]. 中南大学学报(自然科学版), 2014, 45(1): 276-286. (ZHAO Yan-lin, CAO Ping, WAN Wen, et al. Rock cracks subcritical propagation test and compression -shear rheological fracture model[J]. Journal of Central South University (Science and Technology), 2014, 45(1): 276-286. (in Chinese))
    [3]
    赵延林, 万 文, 王卫军, 等. 类岩石材料有序多裂纹体单轴压缩破断试验与翼形断裂数值模拟[J]. 岩土工程学报, 2013, 35(11): 2097-2108. (ZHAO Yan-lin, WAN Wen, WANG Wei-jun, et al. Fracture experiments on ordered multi-crack body in rock-like materials nder uniaxial compression and numerical simulation of wing cracks[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(11): 2097-2108. (in Chinese))
    [4]
    黎立云, 车法星, 卢晋福, 等. 单压下类岩材料有序多裂纹体的宏观力学性能[J]. 北京科技大学学报, 2001, 23(3): 199-203. (LI Li-yun, CHE Fa-xing, LU Jin-fu, et al. Macro-mechanical properties of regular cracks body in rock-lick materials under uniaxial compression[J]. Journal of University of Science and Technology Beijing, 2001, 23(3): 199-203. (in Chinese))
    [5]
    黎立云, 刘大安, 史孝群, 等. 多裂纹类岩体的双压试验与正交各向异性本构关系[J]. 中国有色金属学报, 2002, 12(1): 165-170. (LI Li-yun, LIU Da-an, SHI Xiao-qun, et al. Biaxial compression experiments and orthotropic constitutive relationship for regular cracks in replicated rock mass[J]. The Chinese Journal of nonferrous Metals, 2002, 12(1): 165-170. (in Chinese))
    [6]
    车法星, 黎立云, 刘大安. 类岩材料多裂纹体断裂破坏试验及有限元分析[J]. 岩石力学与工程学报, 2000, 19(3): 295-298. (CHE Fa-xing, LI Li-yun, LIU Da-an. Fracture experiments and finite element analysis for multi-cracks body of rock-like material[J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(3): 295-298. (in Chinese))
    [7]
    蒲成志, 曹 平, 赵延林, 等. 单轴压缩下多裂隙类岩石材料强度试验与数值分析[J]. 岩土力学, 2010, 31(11): 3661-3666. (PU Cheng-zhi, CAO Ping, ZHAO Yan-lin. Numerical analysis and strength experiment of rock-like materials with multi-fissures under uniaxial compression[J]. Rock and Soil Mechanics, 2010, 31(11): 3661-3666. (in Chinese))
    [8]
    张 平, 李 宁, 贺若兰, 等. 动载下两条断续预制力学贯通机制研究[J]. 岩石力学与工程学报, 2006, 25(6): 1211-1217. (ZHANG Ping, LI Ning, HE Ruo-lan, et al. Mechanism of fracture coalescence between two pre-existing flaws under dynamic loading[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(6): 1211-1217. (in Chinese))
    [9]
    张 平, 李 宁, 贺若兰, 等. 动载下3条断续裂隙岩样的裂缝贯通机制[J]. 岩土力学, 2006, 27(9): 1457-1464. (ZHANG Ping, LI Ning, HE Ruo-lan, et al. Fracture coalescence mechanism of three-intermittent-flaws rock specimen under dynamic loading[J]. Rock and Soil Mechanics, 2006, 27(9): 1457-1464. (in Chinese))
    [10]
    张 平, 李 宁, 贺若兰.含裂隙类岩石材料的局部化渐进破损模型研究[J]. 岩石力学与工程学报, 2006, 25(10): 2043-2050. (ZHANG Ping, LI Ning, HE Ruo-lan. Research on localized progressive damage model for fractured rocklike materials[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(10): 2043-2050. (in Chinese))
    [11]
    张 宁, 李术才, 吕爱钟, 等. 拉伸条件下锚杆对含表面裂隙类岩石试样加固效应试验研究[J]. 岩土工程学报, 2011, 33(5): 769-776. (ZHANG Ning, LI Shu-cai, LÜ Ai-zhong, et al. Experimental study on reinforced effect of bolts on 3D surface fractured rock under uniaxial tension[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(5): 769-776. (in Chinese))
    [12]
    侯朝炯, 勾攀峰. 巷道锚杆支护围岩强度强化机理研究[J]. 岩石力学与工程学报, 2000, 19(2): 342-345. (HOU Chao-jiong, GOU Pan-feng. Mechanism study on strength enhancement for the rocks surrounding roadway supported by bolt[J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(2): 342-345. (in Chinese))
    [13]
    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 Yin-hao, YUAN Yong, Experimental research on anchoriage performance of full-thread GFRP anchor bolts[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(2): 394-400. (in Chinese))
    [14]
    李世愚, 和泰名, 尹祥础. 岩石断裂力学导论[M]. 合肥:中国科学技术大学出版社, 2010. (LI Shi-yu, HE Tai-ming, YIN Xiang-chu. Introduction of rock fracture mechanics[M]. Hefei: China University of Technology Press, 2010. (in Chinese))
    [15]
    HORII, H, NEMAT-NASSER S. Compression-induced microcrack growth in brittle solids: axial splitting and shear failure[J]. Journal of Geophysical Research, 1985, 90(B4): 3015-3125.
    [16]
    ASHBY M F, HALLAN S D. The failure of brittle solides containing small cracks under compressiveive stress states[J]. Acta Metall, 1986, 34(3): 497-510.
    [17]
    ASHBY M F, HALLAM S D. The failure of brittle solids containing small cracks under compressive stress states[J]. Acta Metall, 1986, 34(3): 497-510.
    [18]
    ZHU Y J, CHEN C Y, WANG P. Effective anchorage radius of full-size anchored bolt research[J]. Electronis Journal of Geotechnical Engineering, 2014, 19(B): 327-340.
    [19]
    尤春安, 高 明, 张利民, 等. 锚固体应力分布的试验研究[J]. 岩土力学, 2004, 25(增刊1): 63-66. (YOU Chun-an, GAO Ming, ZHANG Li-min, et al. Experimental research on stress distribution in anchorage body[J]. Rock and Soil Mechanics, 2004, 25(S1): 63-66. (in Chinese))

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