列车荷载作用下压实花岗岩残积土累积变形特性试验研究

PDF(3250 KB)

振动与冲击 ›› 2024, Vol. 43 ›› Issue (4) : 87-95.

论文

尹松1,2，刘鹏飞2，孙玉周2，李新明2，闫盼2，王志留2

作者信息 +

Research on cumulative plastic strain characteristics of granite residual soil under cyclic loading

YIN Song1,2，LIU Pengfei2，SUN Yuzhou2，LI Xinming2，YAN Pan2，WANG Zhiliu2

Author information +

文章历史 +

摘要

为研究列车荷载作用下应力及湿化条件对压实花岗岩残积土累积变形特性的影响，以围压、动应力幅值、含水率为变量，对压实花岗岩残积土进行循环空心扭剪和循环定向加载试验。结果表明：循环扭剪应力路径下主应力轴旋转效应增加了试样的累积变形量，甚至改变了累积变形的发展模式，该影响程度随试样含水率的增大而增大；试样的累积应变发展速率在加载初期（N＜100）时完成大幅度衰减，围压增大可加快累积应变发展速率的衰减，动应力幅值的增加会延长累积应变发展速率的衰减时间，循环扭剪加载时试样的累积应变发展速率衰减程度小于循环定向加载试验，含水率越高该效应越显著。通过预测模型能够对两种动力加载应力路径下的稳定型和发展型累积应变发展曲线能够进行拟合，对压实花岗岩残积土的累积变形作出较好预测。

Abstract

In order to study the influence of stress and humidification conditions on the cumulative deformation characteristics of compacted granite residual soil under train load, cyclic hollow torsional shear and cyclic directional loading tests were carried out on compacted granite residual soil with confining pressure, dynamic stress amplitude and water content as variables. The results show that the rotation effect of principal stress axis under cyclic torsional shear stress path increases the cumulative deformation and even changes the development mode of the cumulative deformation, and the effect degree increases with the increase of the water content of the sample. Sample rate of accumulated strain development at the beginning of the load (N < 100) complete greatly attenuation, the increase of confining pressure can accelerate the development of accumulated strain velocity attenuation, the increase of the dynamic stress amplitude will extend the accumulated strain development rate decay time, cumulative strain development of cyclic torsional shear loading when the sample rate attenuation degree directional load is less than the cyclic triaxial test, The higher the moisture content, the more significant the effect. The prediction model can fit the development curves of stable and developed cumulative.

导出引用

尹松1,2，刘鹏飞2，孙玉周2，李新明2，闫盼2，王志留2. 列车荷载作用下压实花岗岩残积土累积变形特性试验研究[J]. 振动与冲击, 2024, 43(4): 87-95

YIN Song1,2，LIU Pengfei2，SUN Yuzhou2，LI Xinming2，YAN Pan2，WANG Zhiliu2. Research on cumulative plastic strain characteristics of granite residual soil under cyclic loading[J]. Journal of Vibration and Shock, 2024, 43(4): 87-95

参考文献

[1] 姬凤玲, 苏栋, 许泽标, 等. 深圳粗粒花岗岩残积土原生各向异性特性研究 [J]. 深圳大学学报：理工版, 2020, 37(6):6. JI Fengling, SU Dong, XU Zebiao, et al. Study on primary anisotropy characteristics of Shenzhen coarse-grained granite residual soil [J]. Journal of Shenzhen University (Science and Engineering), 2020, 37(6):6. [2] Niu X, Xie H, Sun Y, et al. Basic Physical Properties and Mechanical Behavior of Compacted Weathered Granite Soils[J]. International Journal of Geomechanics, 2017, 17(10). [3] Zhang X, Liu X, Chen C, et al. Evolution of disintegration properties of granite residual soil with microstructure alteration due to wetting and drying cycles[J]. Bulletin of Engineering Geology and the Environment, 2022, 81(3):1-15. [4] 周德泉, 谭焕杰, 徐一鸣, 等. 循环荷载作用下花岗岩残积土累积变形与湿化特性试验研究[J].中南大学学报(自然科学版),2013,44(04):1657-1665. ZHOU Dequan, TAN Huanjie, XU Yiming, et al. Experimental study on cumulative deformation and wetting characteristics of granite residual soil under cyclic loading [J]. Journal of Central South University (Science and Technology), 2013,44(04):1657-1665. [5] 陈志波, 安亚洲, 谢永宁, 等.循环荷载作用下原状花岗岩残积土动力特性[J].铁道工程学报,2020,37(11):25-30. CHEN Zhibo, AN Yazhou, XIE Yongning, et al. Dynamic characteristics of undisturbed granite residual soil under cyclic loading[J]. Journal of Railway Engineering Society, 2020,37(11):25-30. [6] 丁智, 虞健刚, 孙苗苗, 等. 越江地铁循环荷载下软黏土累积应变特性及微观结构特征[J]. 中南大学学报(自然科学版), 2021, 52(03): 948-959. DING Zhi, YU Jiangang, Sun Miaomiao, et al. Cumulative strain characteristics and microstructure characteristics of soft clay under cyclic loading in a cross-river subway [J]. Journal of Central South University(Science and Technology), 2021, 52(03): 948-959. [7] 穆锐, 黄质宏, 浦少云, 等. 循环荷载下原状红黏土的累积变形特征及动本构关系研究[J/OL]. 岩土力学, 2020(S2):1-10[2022-07-23]. MU Rui, HUANG Zhihong, PU Shaoyun, et al. Cumulative deformation characteristics and dynamic constitutive relationship of undisturbed red clay under cyclic loading [J/OL]. Rock and Soil Mechanics, 2020(S2): 1-10 [2022-07-23]. [8] ZHANG Xianwei, LIU Xinyu, CHEN Chen, et al. Evolution of disintegration properties of granite residual soil with microstructure alteration due to wetting and drying cycles[J]. Bulletin of Engineering Geology and the Environment, 2022, 81(3):1-15. [9] 祝方才, 邓署冬, 孙德安, 等. 非饱和花岗岩残积土动力变形特性试验研究[J]. 水利水电技术, 2019, 50(01): 142-153. ZHU Fangcai, DENG Shudong, SUN Dean, et al. Experimental Study on Dynamic Deformation Characteristics of Unsaturated Granite Residual Soil [J]. Water Resources and Hydropower Engineering, 2019, 50(01): 142-153. [10] 刘新宇, 张先伟, 孔令伟, 等. 冲击荷载作用下花岗岩残积土的动力损伤与破坏机理[J]. 岩土工程学报, 2019, 41(10): 1872-1881. LIU Xinyu, ZHANG Xianwei, KONG Lingwei, et al. Dynamic damage and failure mechanism of granite residual soil under impact load [J]. Chinese Journal of Geotechnical Engineering, 2019, 50(01): 142-153. [11] 刘新宇, 张先伟, 孔令伟, 等. 冲击荷载下花岗岩残积土的滞回曲线特征与损伤定量评价[J]. 振动与冲击, 2021, 40(01): 58-67. LIU Xinyu, ZHANG Xianwei, KONG Lingwei, et al. Hysteretic Curve Characteristics and Quantitative Evaluation of Damage of Granite Residual Soil under Impact Load [J]. Journal of Vibration and Shock, 2021, 40(01): 58-67. [12] 王钰轲, 黄文清, 万永帅, 等. 不同初始状态软黏土在主应力轴耦合旋转下的孔压及3维变形规律[J]. 工程科学与技术, 2021, 53(02): 84-94. WANG Yuke, HUNG Wenqing, WN Yongshui, et al. Pore pressure and 3D deformation law of soft clay in different initial states under coupled rotation of principal stress axis[J]. Advanced Engineering Sciences, 2021, 53(02): 84-94. [13] 杜子博, 钱建固, 黄茂松. 考虑主应力轴旋转效应的交通荷载下饱和软黏土变形特性试验研究[J]. 岩石力学与工程学报, 2016, 35(05): 1031-1040. DU Zhibo, QIAN Jiangu, HUANG Maosong. Experimental study on deformation characteristics of saturated soft clay under traffic load considering principal stress axis rotation effect [J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35(05): 1031-1040. [14] 伍婷玉, 郭林, 蔡袁强,等. 交通荷载应力路径下K0固结软黏土变形特性试验研究[J]. 岩土工程学报, 2017, 39(05): 859-867. WU Tingyu, GUO Lin, CAI Yuanqiang, et al. Experimental study on deformation characteristics of K0 consolidated soft clay under traffic load stress path [J]. Chinese Journal of Geotechnical Engineering, 2017, 39(05): 859-867. [15] CAI Y Q, GUO L, Jardine R J, et al. Stress–strain response of soft clay to traffic loading[J]. Géotechnique, 2017, 67(5): 446-451. [16] 翁效林,胡继波,贾阳, 等.循环交通荷载作用下饱和重塑黄土变形特性研究[J].岩土工程学报,2022,44(09):1617-1625+3. WENG Xiaolin, HU Jibo, JIA Yang, et al. Study on deformation characteristics of saturated remolded loess under cyclic traffic loads [J]. Chinese Journal of Geotechnical Engineering,2022,44(09):1617-1625+3. [17] Fu Z, Wang G, Song W, et al. Deformation behavior of saturated soft clay under cyclic loading with principal stress rotation[J]. Applied Sciences, 2021, 11(19): 8987. [18] Thevakumar K, Indraratna B, Ferreira F B, et al. The influence of cyclic loading on the response of soft subgrade soil in relation to heavy haul railways[J]. Transportation Geotechnics, 2021, 29: 100571. [19] 姚兆明,黄茂松,曹杰.主应力轴循环旋转下饱和软黏土的累积变形[J].岩土工程学报,2012,34(06):1005-1012. YAO Zhaoming, HUANG Maosong, CAO Jie. Cumulative deformation of saturated soft clay under cyclic principal stress axis rotation [J]. Chinese Journal of Geotechnical Engineering,2012,34(06):1005-1012. [20] CAI Y, WU T, GUO L, et al. Stiffness degradation and plastic strain accumulation of clay under cyclic load with principal stress rotation and deviatoric stress variation[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2018, 144(5): 04018021. [21] TB 10102-2010 铁路工程土工试验规程[S]. 北京: 中国铁道出版社, 2010. TB 10102-2010 Code for Soil Test of Railway Engneering [S]. Beijing: China Railway Press, 2010. [22] Sayao A, Vaid Y P. A critical assessment of stress nonuniformities in hollow cylinder test specimens[J]. Soils and Foundations, 1991, 31(1): 60-72. [23] 尹松, 孔令伟, 杨爱武, 等. 循环振动作用下残积土动力变形特性试验研究[J]. 振动与冲击, 2017, 36(11): 224-231. YIN Song, KONG Lingwei, YNG Aiwu, et al. Tests for dynamic deformation characteristics of residual soil under cyclic loading [J]. Journal of Vibration and Shock, 2017, 36(11): 224-231. [24] 黄博,丁浩,陈云敏.高速列车荷载作用的动三轴试验模拟[J].岩土工程学报.2011,33(2):195-202. HUANG Bo, DING Hao, CHEN Yunmin. Dynamic triaxial test simulation of high speed train load [J]. Chinese Journal of Geotechnical Engineering, 2011,33(2):195-202. [25] Hight, D, W, et al. The development of a new hollow cylinder apparatus for investigating the effects of principal stress rotation in soils[J]. Gueotechnique, 1983. [26] 冷伍明, 刘文劼, 周文权. 振动荷载作用下重载铁路路基粗颗粒土填料临界动应力试验研究[J]. 振动与冲击, 2015, 34(16): 25-30. LENG Wuming, LIU Wenjie, ZHOU Wenquan. Experimental study on critical dynamic stress of coarse-grained soil filler in heavy-duty railway subgrade under vibration load [J]. Journal of Vibration and Shock, 2015, 34(16): 25-30. [27] 张勇.武汉软粘土的变形特征与循环荷载动力响应研究[D].中国科学院研究生院,2008. ZHANG Yong. The Deformation Characteristics of Wuhan Soft Clay and Its Dynamic Responses Subjected to Cyclic Loading. [D]. Graduate School of Chinese Academy of Sciences, 2008.