|
|
Experimental research on mechanical properties and constitutive model of Pisha-sandstone remolded soil |
LI Xiaoli, LI Mingyu, XIE Weidong |
College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China |
|
|
Abstract In order to study the the effects of water content and confining pressure on the mechanical properties of remolded arsenic sandstone soil, triaxial shear tests were carried out with TSZ-6A automatic static triaxial apparatus. The results show that with the increase of confining pressure, the shear strength of soil gradually increases, and the larger the moisture content, the smaller the shear strength of soil. And both of them show an approximate linear trend. Based on Duncan-Chang model, the constitutive model of remolded arsenic sandstone soil is established with water content and confining pressure as influencing factors. The model is applied to predict the stress-strain relationship of remol-ded soft sandstone soil with different water contents and confining pressures. The predicted results are close to the measured results, showing that the predictive model with water content and confining pressure as parameters performs better in reflecting the constitutive relationship of remolded soft sandstone soil, which will provide a theoretical basis for the application of Pisha-sandstone remolded soil in the engineering construction of this area.
|
Received: 27 March 2018
|
|
|
|
[1]李明玉,李晓丽,陈溯航,等. 砒砂岩重塑土强度和应力-应变曲线试验研究[J]. 排灌机械工程学报, 2018, 36(2): 179-184. LI Mingyu,LI Xiaoli,CHEN Suhang, et al. Experiment study of effects of strength and stress-strain curve cha-racteristics of Ordos Pisha-sandstone remolded soil[J]. Journal of drainage and irrigation machinery enginee-ring, 2018, 36(2): 179-184.(in Chinese)[2]邵军义,朱珊. 黏性土应力应变关系的归一化弹性模量及其应用[J].鞍山钢铁学院学报,1997,20(4):42-45. SHAO Junyi,ZHU Shan.On the normalization and the modulus of elasticity relating the stress to the strain of the clay soil and its applicatian[J]. Journal of Anshan Institute of Iron and Steel Technology,1997, 20(4): 42-45.(in Chinese)[3]王成华,李广信. 土体应力-应变关系转型问题分析[J].岩土力学,2004, 25(8):1185-1190. WANG Chenghua, LI Guangxin. Analysis of problem of pattern transition in stress-strain relations of soil[J].Rock and soil mechanics, 2004, 25(8):1185-1190.(in Chinese)[4]尹俊,梅岭,梅国雄.非饱和戮性土的应力-应变关系研究[J]. 岩土力学,2009,30(2):249-253. YIN Jun,MEI Ling, MEI Guoxiong. Research on stress-strain relation of unsaturated cohesive soil[J].Rock and soil mechanics, 2009,30(2):249-253.(in Chinese)[5]JIA Chaojun, XU Weiya, WANG Rubin. Characteri-zation of the deformation behavior of fine-grained sandstone by triaxial cyclic loading [J].Construction and building materials, 2018,162:113-123. [6]万玉珍,林德明. 重塑黄土的应力-应变关系[J].岩土工程学报,1996, 18(6):106-110. WAN Yuzhen, LIN Deming. Stress- strain relationships of remolded loess[J].Chinese journal of geotechnical engineering, 1996, 18(6): 106-410.(in Chinese)[7]倪钧钧,吴学春,张立志,等.重塑土不排水剪切应力-应变关系预测[J].河海大学学报(自然科学版), 2012,40(4):387-392. NI Junjun,WU Xuechun,ZHANG Lizhi,et al. Prediction of stress-strain curves of remolded soils in undrained shear test[J]. Journal of Hohai University(natural sciences), 2012,40(4): 387-392.(in Chinese)[8]于怀昌,周敏,刘汉东,等. 粉砂质泥岩三轴压缩应力松弛特性试验研究[J].岩石力学与工程学报,2011,30(4):803-811. YU Huaichang, ZHOU Min, LIU Handong,et al. Expe-rimental investigation on stress relaxation properties of silty mudstone under triaxial compression[J].Chinese journal of rock mechanics and engineering, 2011,30(4):803-811.(in Chinese)[9]DUNCAN J M, CHANG C Y. Nonlinear analysis of stress and strain in soils[J].Journal of the soil mechanics and foundation, 1970, 96(5):1629-1653. [10]孙谷雨,杨平,刘贯荣. 南京地区冻结粉质勃土邓肯-张模型参数试验研究[J]. 岩石力学与工程学报,2014,33(1):2989-2995. SUN Guyu, YANG Ping,LIU Guanrong. Experimental test on constitutive relationship of Nanjing frozen silty clay considering Duncan-Chang Model[J].Chinese journal of rock mechanics and engineering. 2014,33(1):2989-2995.(in Chinese)[11]王智猛,蒋关鲁,魏永幸. 红层泥岩土邓肯-张模型参数试验研究[J]. 路基工程,2009,147(6):52-54. WANG Zhimeng,JIANG Guanlu, WEI Yongxin. Experimental study on parameters of Duncan-Chang model of red mud stand soil[J].Subgrade engineering, 2009,147(6):52-54.(in Chinese)[12]罗滔,张训忠. 基于不同含水率粉土的邓肯-张模型参数试验研究[J].建筑科学,2011,27(11):44-48. LUO Tao,ZHANG Xunzhong. Test study on parameters of Duncan-Chang model for silt based on different water capacities[J].Building science, 2011,27(11):44-48.(in Chinese)[13]王俊,谢凌志,谢和平,等. 风城油砂三轴力学特性及其本构模型研究[J]. 四川大学学报(工程科学版),2015,47(5):1-9. WANG Jun,XIE Lingzhi,XIE Heping,et al.Triaxial mechanical characteristics and constitutive model of oil sand in Fengcheng[J].Journal of Sichuan University(engineering science edition), 2015,47(5):1-9.(in Chinese)[14]张向东,刘家顺,张玉.基于邓肯-张的冻结粉质黏土本构模型的试验研究[J]. 固体力学学报,2014,32(2):151-158. ZHANG Xiangdong,LIU Jiashun,ZHANG Yu. The experimental research on constitutive relationship of frozen silty clay based on the Duncan-Chang model[J]. Acta mechnica solida sinica,2014,32(2):151-158.(in Chinese)[15]史三元,李群,刘德乾. 邯郸市粉质黏土邓肯-张模型参数试验研究[J]. 河北建筑科技学院学报,2006,23(2):1-3. SHI Sanyuan, LI Qun, LIU Deqian. Study on parame-ters of Duncan-Chang model for Handan siltyclay[J].Journal of Hebei Institute of Architectural Science and Technology, 2006,23(2):1-3.(in Chinese)[16]李广信. 关于土的本构模型研究的若干问题[J]. 岩土工程学报,2009,23(2):1-3. LI Guangxin. Some problems in researches on constitu-tive model of soil[J].Chinese journal of geotechnical engineering, 2009,23(2):1-3.(in Chinese)[17]李广信. 关于Duncan双曲线模型参数确定的若干错误做法[J].岩土工程学报,1998, 20(5):119. LI Guangxin. Some errors in the determination of the parameters of the Duncan hyperbolic model[J]. Chinese journal of geotechnical engineering,1998,20(5):119. [18]沈启鹏,吴道祥,胡雪婷,等. 基于应力应变曲线类型的邓肯-张模型修正[J]. 合肥工业大学学报(自然科学版),2017,40(9):1264-1268. SHEN Qipeng, WU Daoxiang, HU Xueting, et al. Duncan-Chang model modification based on stres}strain curve type [J]. Journal of Hefei University of Technology, 2017, 40(9): 1264-1268.(in Chinese)[19]南京水利科学研究院.土工试验规程:SL237—1999 [S].北京:中国水利水电出版社,1999. |
|
|
|