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Study on the Closure Deformation Properties of Joint Fractal under SHPB Load

WANG Weihua，LI Kun，YAN Zhe，TANG Xiu   

  1. School of Resources and Safety Engineering，Central South University，Changsha    410083，Hunan，China
  • Received:2015-12-22 Revised:2016-06-23 Online:2017-02-28 Published:2017-05-12

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Abstract:

In order to investigate the properties of joint closure deformation under dynamic loading，artificial specimens with joints are produced by using cement mortar，then，the impact test is carried out on joint specimens with different fractal dimension（JRC） under different loading rates by means of SHPB，and the dynamic deformation curves of joints with different Barton standard JRC values under different loading rates are obtained.Analysis of specimens and their results after impact test shows：With the increasing of loading rate，the number of fragmentation is increasing significantly，showing a strong correlation between number and the rate of loading；the change trend of joint closure deformation curve is not affected by loading rate；δ is increasing with the increasing of σ.Under the circumstance of same loading rate，there is a great difference about normal deformation among specimens with different joint morphology；the deformation curves of the specimens with the same joint under different loading rates are also different.No matter how fast the loading rate，there is a strong index relationship between δ and σ，which can be expressed in a unified formula.It provides the experimental basis for the further study of the constitutive equations of joint closure deformation under dynamic loading.

Key words: SHPB, joint fractal, joint closure deformation, dynamic load

［1］ Wang Weihua.Joint Closure Under Dynamic Normal Load and Propagation of Stress Wave Across Joints［D］.Changsha：Central South University，2006.［王卫华.节理动态闭合变形性质及应力波在节理处的传播［D］.长沙：中南大学，2006.］
［2］ Tang Z C，Liu Q S，Xia C C，et al.Mechanical model for predicting closure behavior of rock joints under normal stress［J］.Rock Mechanics and Rock Engineering，2014，47（6）：1-12.
［3］ Tang Zhicheng，Liu Quansheng.Closure deformation model for rock joints considering asperity interaction［J］.Chinese Journal of Geotechnical Engineering，2015，37（5）：853-859.［唐志成，刘泉声.考虑微凸体变形相互作用的节理闭合变形模型［J］.岩土工程学报，2015，37（5）：853-859.］
［4］ Malama B，Kulatilake P H S W.Models for normal fracture deformation under compressive loading［J］.International Journal of Rock Mechanics and Mining Sciences，2003，40（6）：893-901.
［5］ Shehata W M.Geohydrology of Mount Vernon Canyon Area，Jefferson County，Colorado［D］.Golden：Colorado School of Mines，1971.
［6］ Goodman R E.Methods of Geological Engineering in Discontinuous Rocks［M］.New York：West，1976：472-490.
［7］ Bandis S C，Lumsden A C，Barton N R.Fundamentals of rock fracture deformation［J］.International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1983， 20（6）：249-268.
［8］ Barton N R，Bandis S C，Bakhtar K.Strength，deformation and conductivity coupling of rock joints［J］.International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1985，22（3）：121-140.
［9］ Li Xibing，Wang Weihua，Ma Chunde.Constitutive model of rock joints under compression loads with different frequencies［J］.Chinese Journal of Rock Mechanics and Engineering，2007，26（2）：247-253. ［李夕兵，王卫华，马春德.不同频率载荷作用下的岩石节理本构模型［J］.岩石力学与工程学报，2007，26（2）：247-253.］
［10］ Sun Zongqi.Study on the stress deformation properties of discontinuities［J］.Chinese Journal of Geotechnical Engineering，1987，6（4）：287-300.［孙宗颀.不连续面应力—变形性质的研究［J］.岩石力学与工程学报，1987，6（4）：287-300.］
［11］ Xia C C，Yue Z Q，Tham L G，et al.Quantifying topography and closure deformation of rock joints［J］.International Journal  of  Rock Mechanics and Mining Sciences，2003，40（2）：197-220.
［12］ Xia Caichu.Study on Rock Surface Topography and Joint Mechanics［D］.Changsha：Central South Industry University，1992.［夏才初.岩石表面形貌学与节理力学研究［D］.长沙：中南工业大学，1992.］
［13］ Zhao J，Cai J G，Zhao X B，et al.Dynamic model of fracture normal behaviour and application to prediction of stress wave attenuation across fractures［J］.Rock Mechanics and Rock Engineering，2008，41（5）：671-693.
［14］ Yin Xianjun，Wang Guanglun.Study of constitutive model for rock interfaces and joints under normal cyclic loading［J］.Chinese Journal of Geotechnical Engineering，2005，24（7）：1158-1163.［尹显俊，王光纶.岩体结构面法向循环加载本构关系研究［J］.岩石力学与工程学报，2005，24（7）：1158-1163.］
［15］ Hungr O，Coates D F.Deformability of rock joints and its relation to rock foundation settlements［J］.Canadian Geotechnical Journal，2011，15（2）：239-249.
［16］ Yu Jin，Zhao Xiaobao，Zhao Weibing，et al.Improved nonlinear elastic constitutive model for normal deformation of rock fractures［J］.Chinese Journal of Geotechnical Engineering，2008，30（9）：1316-1321.［俞缙，赵晓豹，赵维炳，等.改进的岩石节理弹性非线性法向变形本构模型研究［J］.岩土工程学报，2008，30（9）：1316-1321.］
［17］ Xia C C，Yue Z Q，Tham L G，et al.Quantifying topography and closure deformation of rock joints［J］.International Journal of Rock Mechanics and Mining Sciences，2003，40（2）：197-220.
［18］ Zhao Guangming，Song Shuncheng，Meng Xiangrui，et al.Small diameter pneumatic separation type dynamic compression experiment device：China，101487779A［P］.2009-02-19.［赵光明，宋顺成，孟祥瑞，等.小直径气动分离式动态压缩实验装置：中国，101487779A［P］.2009-02-02-19.］
［19］ Xie Lixiang，Zhao Guangming，Meng Xiangrui.Research on excess stress constitutive model of rock under impact load［J］.Chinese Journal of Rock Mechanics and Engineering，2013，32（S1）：2772-2781.［谢理想，赵光明，孟祥瑞.岩石在冲击载荷下的过应力本构模型研究［J］.岩石力学与工程学报，2013，32（增1）：2772-2781.］
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