循环加卸载过程中砂岩能量耗散演化规律

doi:10.13722/j.cnki.jrme.2015.0278

摘要
图/表
参考文献(18)
相关文章 (15)

全文: PDF (1345 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为了深入分析循环加卸载过程中岩石能量耗散演化规律，设计、进行砂岩的单轴循环加卸载试验。详细分析典型循环加卸载滞回圈曲线变化特征，探讨加卸载过程中的总功、弹性变形能、耗散能、能量耗散率、残余应变、损伤变量等参数的变化规律及其相互关系。结果表明：(1) 循环加卸载过程中，应力–应变滞后现象明显，而且存在明显的残余应变，在计算各能量参数时应该考虑这些因素的影响；(2) 考虑残余变形和滞后效应的影响，提出循环加卸载过程中各能量参数修正的计算方法；(3) 岩样在循环加卸载临近破坏的时候，各能量参数及残余应变出现明显的增大，能量参数和残余应变的突变均可以较好地预测岩样的破坏；(4) 能量耗散率与残余应变的相关性也从另一个角度说明了在能量参数计算时不可忽略残余应变的影响。研究成果对岩石循环加卸载过程中岩石能量损伤演化规律分析具有较好的参考价值。

	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
	邓华锋1
	2
	胡玉1
	2
	李建林1
	2
	王哲1
	2
	张小景1
	2
	胡安龙1
	2

关键词 ：岩石力学, 循环加卸载, 耗散能, 残余应变, 滞后效应, 损伤演化

Abstract：To analyze the evolution law of rock energy dissipation，a series of uniaxial cyclic loading and unloading tests for sandstone have been designed and conducted. The typical cyclic loading and unloading hysteresis loop characteristic curve has been analyzed in detail，the variation and relationship of the total power，the elastic deformation energy，dissipated energy，energy dissipation rate，residual strain，damage variable and some other parameters during loading and unloading process have been discussed. The results showed that：(1) during cyclic loading and unloading process，the stress-strain hysteresis is obvious，and there is significant residual strain，whose effects should be considered in the calculation of the energy parameters. (2) Considering the impact of residual deformation and hysteresis effects，modified calculation methods of energy parameters during cyclic loading and unloading process have been proposed. (3) When rock samples is close to failure during the cyclic loading and unloading process，there is a significant increase for the energy parameters and residual strain，and the energy parameters and residual strain can effectively predict the destruction of rock samples. (4) The correlation of energy dissipation rate and residual strain shows from another perspective that the residual strain cannot be ignored in the calculation of energy parameters. The research results have a good reference value for the analysis of rock damage evolution law during cyclic loading and unloading process.

Key words： rock mechanics cyclic loading and unloading dissipated energy residual strain hysteresis effect damage evolution

引用本文:

邓华锋1，2，胡玉1，2，李建林1，2，王哲1，2，张小景1，2，胡安龙1，2. 循环加卸载过程中砂岩能量耗散演化规律[J]. 岩石力学与工程学报, 2016, 35(S1): 2869-2875.
DENG Huafeng1，2，HU Yu1，2，LI Jianlin1，2，WANG Zhe1，2，ZHANG Xiaojing1，2，HU Anlong1，2. The evolution of sandstone energy dissipation under cyclic loading and unloading. , 2016, 35(S1): 2869-2875.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2015.0278 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS1/2869

[1] 张媛. 循环荷载条件下岩石变形损伤及能量演化的实验研究[硕士学位论文][D]. 重庆：重庆大学，2011.(ZHANG Yuan. Experimental research on characteristic of deformation and dissipated energy of rock under cyclic loading conditions[M. S. Thesis][D]. Chongqing：Chongqing University，2011.(in Chinese))

[2] 谢和平，彭瑞东，鞠杨. 岩石变形破坏过程中的能量耗散分析[J]. 岩石力学与工程学报，2004，23(21)：3 565–3 570.(XIE Heping，PENG Ruidong，JU Yang. Energy dissipation of rock deformation and fracture[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(21)：3 565–3 570.(in Chinese))

[3] 谢和平，彭瑞东，鞠杨，等. 岩石破坏的能量分析初探[J]. 岩石力学与工程学报，2005，24(5)：2 603–2 607.(XIE Heping，PENG Ruidong，JU Yang，et al.On energy analysis of rock failure[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(5)：2 603– 2 607.(in Chinese))

[4] 谢和平，鞠杨，黎立云，等. 岩体变形破坏过程的能量机制[J]. 岩石力学与工程学报，2008，27(9)：1 729–1 740.(XIE Heping，JU Yang，LI Liyun，et al. Energy mechanism of deformation and failure of rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(9)：1 729–1 740.(in Chinese))

[5] 彭瑞东，谢和平，鞠杨. 砂岩拉伸过程中的能量耗散与损伤演化分析[J]. 岩石力学与工程学报，2007，26(12)：2 526–2 531.(PENG Ruidong，XIE Heping，JU Yang. Analysis of energy dissipation and damage evolution of sandstone during tensile process[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(12)：2 526–2 531.(in Chinese))

[6] 许江，杨红伟，李树春，等. 循环加、卸载孔隙水压力对砂岩变形特性影响实验研究[J]. 岩石力学与工程学报，2009，28(5)：892–899.(XU Jiang，YANG Hongwei，LI Shuchun，et al. Experimental study of effects of cyclic loading and unloading pore water pressures on deformation characteristic of sandstone[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(5)：892–899.(in Chinese))

[7] 苏承东，张振华. 大理石三轴压缩的塑性变形与能量特征分析[J]. 岩石力学与工程学报，2008，27(2)：273–280.(SU Chengdong，ZHANG Zhenhua. Analysis of plastic deformation tion and energy property of marble under pseudo-triaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(2)：273–280.(in Chinese))

[8] 金丰年，蒋美蓉，高小玲. 基于能量耗散定义损伤变量的方法[J]. 岩石力学与工程学报，2004，23(12)：1 976–1 980.(JIN Fengnian，JIANG Meirong，GAO Xiaoling. Defining damage variable based on energy dissipation[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(12)：1 976–1 980.(in Chinese))

[9] SONG D Z，WANG E Y，LIU J. Relationship between EMR and dissipated energy of coal rock mass duringcyclic loading process[J]. Safety Science，2012，50：751–760.(in Chinese))

[10] 刘杰，李建林. 循环载荷下岩体能量特征及变形参数分析[J]. 岩石力学与工程学报，2010，29(增)：3 505–3 513.(LIU Jie，LI Jianlin. Analysis of energy characteristics and deformation parameters of rocks mass under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.)：3 505–3 513.(in Chinese))

[11] 肖建清，冯夏庭，丁德馨，等. 常幅循环荷载作用下岩石的滞后及阻尼效应研究[J]. 岩石力学与工程学报，2010，29(8)：1 677– 1 683.(XIAO Jianqing，FENG Xiating，DING Dexin，et al. Study of hysteresis and damping effects of rock subjected to constant amplitude cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(8)：1 677–1 683.(in Chinese))

[12] 朱明礼，朱珍德，李刚，等. 循环荷载作用下花岗岩动力特性试验研究[J]. 岩石力学与工程学报，2009，28(12)：2 520–2 526.(ZHU Mingli，ZHU Zhende，LI Gang，et al. Experimental study of dynamic characteristics of granite under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(12)：2 520–2 526.(in Chinese))

[13] 邓华锋，胡亚运，李建林，等. 考虑滞后效应的岩石加卸载响应比试验研究[J]. 岩石力学与工程学报，2015，34(增1)：2 915–2 921. (DENG Huafeng，HU Yayun，LI Jianlin，et al. Experimental research on the load/unload response ratio considering the hysteresis effect of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.1)：2 915–2 921.(in Chinese))

[14] 中华人民共和国行业标准编写组. SL264—2001水利水电工程岩石试验规程[S]. 北京：中国水利水电出版社，2001.(The Professional Standard Compilation Group of People¢s Republic of China. SL264—2001 Specifications for rock tests in water conservancy and hydroelectric engineering[S]. Beijing：China Water Power Press，2001.(in Chinese))

[15] 邓华锋. 库水变幅带水–岩作用机制和作用效应研究[博士学位论文][D]. 武汉：武汉大学，2010.(DENG Huafeng. Study on the mechanism and effects of water-rock interaction under water level change region[Ph. D. Thesis][D]. Wuhan：Wuhan University，2010.(in Chinese))

[16] 邓华锋，李建林，邓成进，等. 岩石力学试验中试样选择和抗压强度预测方法研究[J]. 岩土力学，2011，32(11)：3 399–3 403.(DENG Huafeng，LI Jianlin，DENG Chengjin，et al. Analysis of sampling in rock mechanics test and compressive strength prediction methods[J]. Rock and Soil Mechanics，2011，32(11)：3 399–3 403.(in Chinese))

[17] 陈运平，席道瑛，薛彦伟. 循环载荷下饱和岩石的应力–应变动态响应[J]. 石油地球物理勘探，2003，38(4)：409–413.(CHEN Yunping，XI Daoying，XUE Yanwei. Stress-strain dynamic response of saturated rocks under cyclic loading[J]. Oil Geophysical Prospecting，2003，38(4)：409–413.(in Chinese))

[18] 谢和平，鞠杨，董毓利. 经典损伤定义中的“弹性模量法”探讨[J]. 力学与实践，1997，19(2)：1–5.(XIE Heping，JU Yang，DONG Yuli. Discussion about “elastic modulus method” in the classic definition of damage[J]. Mechanics and Practice，1997，19(2)：1–5.(in Chinese))