Shear creep characteristics and constitutive model for interlayer shear belt of high abutment slopes
CHEN Xing-zhou1, LI Jian-lin2, CHAI Jun-rui1, 2, BAI Jun-guang3
1. College of Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, China; 2. College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, China; 3. Northwest Hydro Consulting Engineering, CHECC, Xi'an 710065, China
Abstract:The creep characteristics and damage properties of interlayer shear belt of high abutment slopes affect the long-term stability of high dam projects. The shear creep mechanic characteristics of interlayer shear belt are studied based on the shear creep mechanic test, and the long-term shear strength parameters, accelerated creep properties and change rules of shear creep rate are analyzed. By analyzing the rules of creep damage evolution of interlayer shear belt, the damage degradation effects of mechanical parameters over time and over accelerated creep are discussed. Based on the Nishihara creep model and the creep damage evolution equations, a creep damage model is proposed to reflect the creep damage process of interlayer shear belt of slopes completely. The comparison between the calculated results of creep damage model and the test results show that the proposed creep damage model for interlayer shear belt of slopes is available and reasonable.
陈兴周, 李建林, 柴军瑞, 白俊光. 坝肩高边坡层间错动带剪切蠕变特性与模型研究[J]. 岩土工程学报, 2013, 35(9): 1675-1682.
CHEN Xing-zhou, LI Jian-lin, CHAI Jun-rui, BAI Jun-guang. Shear creep characteristics and constitutive model for interlayer shear belt of high abutment slopes. Chinese J. Geot. Eng., 2013, 35(9): 1675-1682.
[1] 孙 钧. 岩石流变力学及工程应用研究的若干进展[J]. 岩石力学与工程学报, 2007, 26(6): 1081-1106. (SUN Jun. Rock rheological mechanics and its advance in engineering applications[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(6): 1081-1106. (in Chinese)) [2] 丁秀丽, 刘 建, 刘雄贞. 三峡船闸区硬性结构面蠕变特性试验研究[J]. 长江科学院院报, 2000, 17(4): 30-33. (DING Xiu-li, LIU Jian, LIU Xiong-zhen. Experimentalstudy on creep behaviors of hard structural plane in TGP's permanent lock regions[J]. Journal of Yangtze River Scientific Research Institute, 2000, 17(4): 30-33. (in Chinese)) [3] 杨圣奇, 徐卫亚, 杨松林. 龙滩水电站泥板岩剪切流变力学特性研究[J]. 岩土力学, 2007, 28(5): 895-903. (YANG Sheng-qi, XU Wei-ya, YANG Song-lin. Investigation on shear rheological mechanical properties of shale in Longtan Hydropower Project[J]. Rock and Soil Mechanics, 2007, 28(5): 895-903. (in Chinese)) [4] 张治亮, 徐卫亚, 赵海斌, 等. 向家坝水电站含弱面砂岩剪切蠕变试验研究[J]. 岩石力学与工程学报, 2010, 29(增刊2): 3693-3699. (ZHANG Zhi-liang, XU Wei-ya, ZHAO Hai-bin, et al. Investigation on shear creep experiments of sandstone with weak plane in Xiangjiaba Hydropower Station [J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S2): 3693-3699. (in Chinese)) [5] 许东俊. 软弱岩体流变特性及长期强度测定法[J]. 岩土力学, 1980, 2(1): 37-50. (XU Dong-jun. The rheological behavior of the weak rock mass and the method of determining long-term strength[J]. Rock and Soil Mechanics, 1980, 2(1): 37-50. (in Chinese)) [6] 徐鼎平, 冯夏庭, 崔玉军, 等. 含层间错动带岩体的破坏模式及其剪切特性研究方法探讨[J]. 岩土力学, 2012, 33(1): 129-136. (XU Ding-ping, FENG Xia-ting, CUI Yu-jun, et al. On failure mode and shear behavior of rock mass with interlayer staggered zone[J]. Rock and Soil Mechanics, 2012, 33(1): 129-136. (in Chinese)) [7] 伍国军, 陈卫忠, 曹俊杰, 等. 工程岩体非线性蠕变损伤力学模型及其应用[J]. 岩石力学与工程学报, 2010, 29(6): 1184-1192. (WU Guo-jun, CHEN Wei-zhong, CAO Jun-jie, et al. Nonlinear creep damage model of engineered rock and its application [J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(6): 1184-1192. (in Chinese)) [8] 吕爱钟, 丁志坤, 焦春茂, 等. 岩石非定常蠕变模型辨识[J]. 岩石力学与工程学报, 2008, 27(1): 16-22. (LÜ Ai-zhong, DING Zhi-kun, JIAO Chun-mao, et al. Identification of non-stationary creep constitutive models of rock [J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(1): 16-22. (in Chinese)) [9] 张治亮, 徐卫亚, 王 伟. 向家坝水电站坝基挤压带岩石三轴蠕变试验及非线性黏弹塑性蠕变模型研究[J]. 岩石力学与工程学报, 2011, 30(1): 132-140. (ZHANG Zhi-liang, XU Wei-ya, WANG Wei. Study of triaxial creep tests and its nonlinear visco-elastoplastic creep model of rock from compressive zone of dam foundation in xiangjiaba hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(1): 132-140. (in Chinese)) [10] 张强勇, 杨文东, 张建国, 等. 变参数蠕变损伤本构模型及其工程应用[J]. 岩石力学与工程学报, 2009, 28(4): 732-740. (ZHANG Qiang-yong, YANG Wen-dong, ZHANG Jian-guo, et al. Variable parameters-based creep damage constitutive model and its engineering application[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(4): 732-740. (in Chinese)) [11] 许宏发. 软岩强度和弹模的时间效应研究[J]. 岩石力学与工程学报, 1997, 16(3): 246-251. (XU Hong-fa. Time-dependent behaviours of strength and elasticity modulus of weak rock[J]. Chinese Journal of Rock Mechanics and Engineering, 1997, 16(3): 246-251. (in Chinese)) [12] 王贵君. 一种盐岩流变损伤模型[J]. 岩土力学, 2003, 24(增刊): 81-84. (WANG Gui-jun. A constitutive creep-damage model for saline rocks[J]. Rock and Soil Mechanics, 2003, 24(S0): 81-84. (in Chinese)) [13] 韦立德, 杨春和, 徐卫亚. 基于细观力学的盐岩蠕变损伤本构模型研究[J]. 岩石力学与工程学报, 2005, 24(23): 4253-4257. (WEI Li-de, YANG Chun-he, XU Wei-ya. Study on creep damage constitutive model of salt rock based on mesomechanics[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(23): 4253-4257. (in Chinese)) [14] 孙 钧. 岩土材料流变及其工程应用[M]. 北京: 中国建筑工业出版社, 1999. (SUN Jun. Rheological behavior of geomaterials and its engineering applications[M]. Beijing: China Architecture and Building Press, 1999. (in Chinese)) [15] 杨春和, 陈 锋, 曾义金. 盐岩蠕变损伤关系研究[J]. 岩石力学与工程学报, 2002, 21(11): 1602-1604. (YANG Chun-he, CHEN Feng, ZENG Yi-jin. Investigation on creep damage constitutive theory of salt rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(11): 1602-1604. (in Chinese)) [16] 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): 3565-3570. (XIE He-ping, PENG Rui-dong, JU Yang. Energy dissipation of rock deformation and fracture[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(21): 3565-3570. (in Chinese)) [17] 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): 1729-1740. (XIE He-ping, JU Yang, LI Li-yun. Energy mechanism of deformation and failure of rock masses[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(9): 1729-1740. (in Chinese))