融化饱和哈尔滨黏土的应变速率效应试验研究

doi:10.13722/j.cnki.jrme.2016.0948

摘要
图/表
参考文献
相关文章 (0)

全文: PDF (572 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要对饱和哈尔滨黏土进行7次冻融循环后，在不同围压和应变速率下进行固结不排水三轴剪切试验，分析融化饱和黏土的有效偏应力及孔隙水压力随应变速率的发展规律。结果表明，融化饱和哈尔滨黏土在小于240 kPa的围压下表现出超固结特性，在240 kPa围压下表现为正常固结或者轻度超固结特性。随着应变速率的增大，融化哈尔滨黏土的强度变化规律以0.15 h－1为节点分为2个阶段：当应变速率小于0.15 h－1时，试件的强度随着速率的增大先增大后减小，当应变速率超过0.15 h－1时，试件的强度随着速率的增大持续增大；孔隙水压力的发展趋势随着围压的增大由软化型转变为硬化型，但各围压下的应变速率效应对孔隙水压力的发展趋势影响不明确；利用广义双曲线模型对试验数据进行分析拟合，研究表明，该模型能够合理的描述融化哈尔滨黏土的应变速率效应。

	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
	林波1
	张锋1
	冯德成1
	冯鑫2

关键词 ：土力学；融化黏土；应变速率；应力&ndash, 应变关系；孔隙水压力；广义双曲线模型

Abstract：Consolidated-undrained triaxial shear tests were conducted at different strain rates and confining pressures to study the effects of strain rates on the effective deviatoric stress and pore water pressure of thawed saturated Harbin clay(TSHC). The results show that the thawed saturated Harbin clay presents an over- consolidation characteristic when the confining pressure is less than 240 kPa，and normally or slightly over-consolidation characteristic under the confining pressure of 240 kPa. The strength of thawed saturated Harbin clay increases first and then decreases with the increase of the strain rate below 0.15 h－1，but continuously increase when the strain rate exceeds 0.15 h－1. The characteristics of pore water pressure-strain curves change from the softening type to the hardening type when the confining pressure increases，but the influence of strain rate effects on the development of pore water pressure is unclear. In addition，it was found that the generalized hyperbolic model described nicely the strain rate effects of thawed saturated Harbin clay.

Key words： soil mechanics thawed clay strain rate stress-strain relationship pore water pressure generalized hyperbolic model

引用本文:

林波1，张锋1，冯德成1，冯鑫2. 融化饱和哈尔滨黏土的应变速率效应试验研究[J]. 岩石力学与工程学报, 2017, 36(6): 1522-1530.
LIN Bo1，ZHANG Feng1，FENG Decheng1，FENG Xin2 . Experimental investigation on strain rate effects on saturated Harbin clay subjected to freeze-thaw cycles. , 2017, 36(6): 1522-1530.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2016.0948 或 http://www.rockmech.org/CN/Y2017/V36/I6/1522

[30]	CUI Z，HE P，YANG W. Mechanical properties of a silty clay subjected to freezing-thawing[J]. Cold Regions Science and Technology，2014，98：26-34. " target="_blank">
[40]	BENZ T. Small-strain stiffness of soils and its numerical consequences[Ph. D. Thesis][D]. Stuttgart：University of Stuttgart，2007. " target="_blank">
[33]	陈铁林，陈生水，周成，等. 粘土的流变特性分析[J]. 岩土工程学报，2001，23(3)：279-283.(CHEN Tielin，CHEN Shengshui，ZHOU Cheng，et al. Research on rheology character of clay[J]. Chinese Journal of Geotechnical Engineering，2001，23(3)：279-283.(in Chinese))
[1]	CHAMBERLAIN E J，GOW A J. Some aspects of artificial thawing of frozen soils[J]. Engineering Geology，1979，13(1)：73-92. " target="_blank">
[14]	但汉波，王立忠. K0固结软黏土的应变率效应研究[J]. 岩土工程学报，2008，30(5)：718-725.(DAN Hanbo，WANG Lizhong. Strain-rate dependent behaviors of K0 consolidated clays[J]. Chinese Journal of Geotechnical Engineering，2008，30(5)：718-725.(in Chinese))
[3]	齐吉琳，张建明，朱元林. 冻融作用对土结构性影响的土力学意义[J]. 岩石力学与工程学报，2003，22(增2)：2 690-2 694.(QI Jilin，ZHANG Jianming，ZHU Yuanlin. Influence of freezing-thawing on soil structure and its soil mechanics significance[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(Supp.2)：2 690-2 694. (in Chinese))
[5]	QI J，MA W，SONG C. Influence of freeze-thaw on engineering properties of a silty soil[J]. Cold Regions Science and Technology，2008，53(3)：397-404. " target="_blank">
[8]	WANG D，MA W，NIU Y，et al. Effects of cyclic freezing and thawing on mechanical properties of Qinghai—Tibet clay[J]. Cold Regions Science and Technology，2007，48(1)：34-43. " target="_blank">
[10]	毛雪松，侯仲杰，王威娜. 基于含水量和冻融循环的重塑土回弹模量试验研究[J]. 岩石力学与工程学报，2009，28(增2)：3 585-3 590. (MAO Xuesong，HOU Zhongjie，WANG Weina. Experimental research on resilient modulus of remolded soil based on water content and freeze-thaw cycles[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.2)：3 585-3 590.(in Chinese))
[13]	廖红建，蒲武川，殷建华. 软岩的应变速率效应研究[J]. 岩石力学与工程学报，2005，24(18)：3 218-3 223.(LIAO Hongjian，PU Wuchuan，YIN Jianhua. Study on strain rate effect on soft rock[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(18)：3 218-3 223.(in Chinese))
[15]	蔡羽，孔令伟，郭爱国，等. 剪应变率对湛江强结构性黏土力学性状的影响[J]. 岩土力学，2006，27(8)：1 235-1 240.(CAI Yu， KONG Lingwei，GUO Aiguo，et al. Effects of shear strain rate on mechanical behavior of Zhanjiang strong structured clay[J]. Rock and Soil Mechanics，2006，27(8)：1 235-1 240.(in Chinese))
[18]	刘添俊，莫海鸿. 长期循环压缩荷载下饱和软黏土的应变速率特性[J]. 中国公路学报，2009，22(1)：17-22.(LIU Tianjun，MO Haohong. Behaviour of strain rate of saturated soft clay under long-term cycle compression loading[J]. China Journal of Highway and Transport，2009，22(1)：17-22.(in Chinese))
[20]	TSUTSUMI A，TANAKA H. Combined effects of strain rate and temperature on consolidation behavior of clayey soils[J]. Soils and Foundations，2012，52(2)：207-215. " target="_blank">
[23]	MARTIN B，KABIR M E，CHEN W. Undrained high-pressure and high strain-rate response of dry sand under triaxial loading[J]. International Journal of Impact Engineering，2013，54：51-63. " target="_blank">
[25]	中华人民共和国行业标准编写组. JTG E40—2007公路土工试验规程[S]. 北京：人民交通出版社，2007.(The Professional Standards Compilation Group of People?s Republic of China. JTG E40—2007 Test methods of soils for highway engineering[S]. Beijing：China Communications Press，2007.( in Chinese)) " target="_blank">
[28]	张英，邴慧，杨成松. 基于SEM和MIP的冻融循环对粉质黏土强度影响机制研究[J]. 岩石力学与工程学报，2015，34(增1)：3 597-3 603.(ZHANG Ying，BING Hui，YANG Chengsong. Influences of freeze-thaw cycles on mechanical properties of silty clay based on SEM and MIP test[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.1)：3 597-3 603.(in Chinese))
[9]	齐吉琳，马巍. 冻融作用对超固结土强度的影响[J]. 岩土工程学报，2006，28(12)：2 082-2 086.(QI Jilin，MA Wei. Influence of freezing- thawing on strength of overconsolidated soils[J]. Chinese Journal of Geotechnical Engineering，2006，28(12)：2 082-2 086.(in Chinese)) " target="_blank">
[19]	YIN Z，KARSTUNEN M. Modelling strain-rate-dependency of natural soft clays combined with anisotropy and destructuration[J]. Acta Mechanica Solida Sinica，2011，24(3)：216-230.
[29]	TANG Y，ZHOU J，HONG J，et al. Quantitative analysis of the microstructure of Shanghai muddy clay before and after freezing[J]. Bulletin of Engineering Geology and the Environment，2012，71(2)：309-316.
[39]	GRAHAM J，AU V. Effects of freeze-thaw and softening on a natural clay at low stresses[J]. Canadian Geotechnical Journal，1985，22(1)：69-78. " target="_blank">
[11]	于琳琳，徐学燕，邱明国，等. 冻融作用对饱和粉质黏土抗剪性能的影响[J]. 岩土力学，2010，31(8)：2 448-2 452.(YU Linlin，XU Xueyan，QIU Mingguo，et al. Influence of freeze-thaw on shear strength properties of saturated silty clay[J]. Rock and Soil Mechanics，2010，31(8)：2 448-2 452.(in Chinese))
[21]	岳夏冰，赵丽娅，谢永利，等. 重塑饱和黄土应变-加载速率-时间计算模型[J]. 武汉理工大学学报，2012，34(6)：101-104.(YUE Xiabing，ZHAO Liya，XIE Yongli，et al. Strain-loading rates-time model of remolded saturated loess[J]. Journal of Wuhan University of Technology，2012，34(6)：101-104.(in Chinese))
[31]	LAMBE T W. The structure of compacted clay[J]. Journal of the Soil Mechanics and Foundations Division，ASCE，1958，84(SM2)：1-34. " target="_blank">
[35]	LEFEBVRE G，LEBOEUF D. Rate effects and cyclic loading of sensitive clays[J]. Journal of Geotechnical Engineering，1987，113(5)：476-489. " target="_blank">
[38]	尹骥，陈宝，李煜，等. 上海第②层粉质黏土非饱和强度与变形模量的三轴试验研究[J]. 岩土工程学报，2009，31(10)：1 619-1 625.(YIN Ji，CHEN Bao，LI Yu，et al. Triaxial tests on strength and deformation modulus of No.2 layer silty clay of Shanghai[J]. Chinese Journal of Geotechnical Engineering，2009，31(10)：1 619-1 625.(in Chinese))
[41]	SCHANZ T，VERMEER P，BONNIER P. The hardening soil model： formulation and verification[C]// Beyond 2000 in Computational Geotechnics. Amsterdam：Balkema，1999：281-296. " target="_blank">
[6]	郑郧，马巍，邴慧. 冻融循环对土结构性影响的试验研究及影响机制分析[J]. 岩土力学，2015，36(5)：1 282-1 287.(ZHENG Yun，MA Wei，BING Hui. Impact of freezing and thawing cycles on structure of soils and its mechanism analysis by laboratory testing[J]. Rock and Soil Mechanics，2015，36(5)：1 282-1 287.(in Chinese))
[7]	LEE W，BOHRA N，ALTSCHAEFFL A，et al. Resilient modulus of cohesive soils and the effect of freeze-thaw[J]. Canadian Geotechnical Journal，1995，32(4)：559-568. " target="_blank">
[16]	程海涛，刘保健，谢永利. 压实黄土连续加载K0固结特性[J]. 岩石力学与工程学报，2007，26(增1)：3 203-3 208.(CHENG Haitao，LIU Baojian，XIE Yongli. K0 consolidation characteristics of compacted loess under continuous loading[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：3 203-3 208.(in Chinese))
[17]	ROWE RK，TAECHAKUMTHORN C. Combined effect of PVDS and reinforcement on embankments over rate-sensitive soils[J]. Geotextiles and Geomembranes，2008，26(3)：239-249.
[26]	中华人民共和国国家标准编写组. GB/T 50123—1999土工试验方法标准[S]. 北京：中国计划出版社，1999.(The National Standards Compilation Group of People?s Republic of China. GB/T 50123—1999 Standard for soil test method[S]. Beijing：China Planning Press，1999.(in Chinese)) " target="_blank">
[27]	ZHANG F，JING R，FENG D，et al. Mechanical properties and an empirical model of compacted silty clay subjected to freeze-thaw cycles[C]// Innovative Materials and Design for Sustainable Transportation Infrastructure：American Society of Civil Engineers. [S.l.]：[s.n.]，2015：200-212. " target="_blank">
[36]	LADD C. Stress-deformation and strength characteristics，state of the art report[C]// Proceedings of the 9th International Conference on Soil Mechanics and Foundation Engineering，Japanese Society of Soil Mechanics and Foundation Engineering. Tokyo：[s.n.]，1977：421-494. " target="_blank">
[37]	沈珠江. 沈珠江土力学论文选集[M]. 北京：清华大学出版社，2005：282-284.(SHEN Zhujiang. Selected works on soil mechanics of SHEN Zhujiang[M]. Beijing：Tsinghua University Press，2005：282-284.(in Chinese)) " target="_blank">
[2]	OTHMAN M A，BENSON C H. Effect of freeze-thaw on the hydraulic conductivity and morphology of compacted clay[J]. Canadian Geotechnical Journal，1993，30(2)：236-246. " target="_blank">
[4]	KONRAD J，SAMSON M. Influence of freezing temperature on hydraulic conductivity of silty clay[J]. Journal of Geotechnical and Geoenvironmental Engineering，2000，126(2)：180-187. " target="_blank">
[24]	朱启银，尹振宇，朱俊高，等. 软黏土加载速率效应特性试验研究：进展与趋势[J]. 岩土力学，2012，35(1)：7-24.(ZHU Qiyin，YIN Zhenyu，ZHU Jungao，et al. Progress and trend of experimental investigation on rate-dependent behavior of soft clays[J]. Rock and Soil Mechanics，2012，35(1)：7-24.(in Chinese))
[34]	ZHU J，YIN J. Strain-rate-dependent stress-strain behavior of overconsolidated Hong Kong marine clay[J]. Canadian Geotechnical Journal，2000，37(6)：1 272-1 282. " target="_blank">
[12]	常丹，刘建坤，李旭，等. 冻融循环对青藏粉砂土力学性质影响的试验研究[J]. 岩石力学与工程学报，2014，33(7)：1 496-1 502. (CHANG Dan，LIU Jiankun，LI Xu，et al. Experiment study of effects of freezing-thawing cycles on mechanical properties of Qinghai—Tibet silty sand[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1 496-1 502.(in Chinese))
[22]	WATANABE K，KUSAKABE O. Reappraisal of loading rate effects on sand behavior in view of seismic design for pile foundation[J]. Soils and Foundations，2013，53(2)：215-231. " target="_blank">
[32]	陈铁林，周成，沈珠江. 结构性黏土压缩和剪切特性试验研究[J]. 岩土工程学报，2004，26(1)：31-35.(CHEN Tielin，ZHOU Cheng，SHEN Zhujiang. Compression and shear test of structured clay[J]. Chinese Journal of Geotechnical Engineering，2004，26(1)：31-35. (in Chinese))