循环围压对超固结黏土变形特性影响试验研究

doi:10.13722/j.cnki.jrme.2015.03.017

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Abstract A series of undrained cyclic tests under consfant/variable confining pressures were carried out on typical Wenzhou soft clay by GDS cyclic triaxial apparatus. The coupling effect of cyclic deviatoric stress and cyclic confining pressure on the undrained permanent deformation of overconsolidated saturated soft clay was studied. Under the undrained condition，the cyclic confining pressure was found to limit the development of the permanent axial strain of overconsolidated saturated soft clay to some extent. The permanent axial strain reduced 20.18% if the ratio of p/q was raised value of 1. On the basis of the experimental results，an empirical formula incorporating the effect of overconsolidation ratio and cyclic confining pressure was proposed to estimate the permanent axial strain in the undrained cyclic tests.

Key words： soil mechanics cyclic confining pressure(CCP) dynamic triaxial test overconsolidated clay permanent axial strain

Received: 29 April 2014

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.03.017 OR http://www.rockmech.org/EN/Y2015/V34/I03/594

[1]	PARR G B. Some aspects of the behavior of London clay under repeated loading[Ph. D. Thesis][D]. UK：University of Nottingham，1972. " target="_blank">
[5]	黄茂松，李进军，李兴照. 饱和软黏土的不排水循环累积变形特性[J]. 岩土工程学报，2006，28(7)：891-895.(HUANG Maosong，LI Jinjun，LI Xingzhao. Cumulative deformation behaviour of soft clay in cyclic undrained tests[J]. Chinese Journal of Geotechnical Engineering，2006，28(7)：891-895.(in Chinese))
[6]	张勇，孔令伟，郭爱国，等. 循环荷载下饱和软黏土的累积塑性应变试验研究[J]. 岩土力学，2009，30(6)：1 542-1 548.(ZHANG Yong，KONG Lingwei，GUO Aiguo，et al. Cumulative plastic strain of saturated soft clay under cyclic loading [J]. Rock and Soil Mechanics，2009，30(6)：1 542-1 548. (in Chinese)) " target="_blank">
[9]	高玉峰，黎冰，刘汉龙. 车辆荷载作用下公路软基沉降的拟静力计算方法研究[J]. 岩石力学与工程学报，2005，24(增2)：5 470-5 477.(GAO Yufeng，LI Bing，LIU Hanlong. Study on quasi-static settlement computation method of highway in soft ground induced by vehicle loads[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(Supp.2)：5 470-5 477.(in Chinese)) " target="_blank">
[10]	蒋军，陈龙珠. 长期循环荷载作用下黏土的一维沉降[J]. 岩土工程学报，2001，23(3)：366-369.(JIANG Jun，CHEN Longzhu. One- dimensional settlement due to long-term cyclic loading[J]. Chinese Journal of Geotechnical Engineering，2001，23(3)：366-369.(in Chinese))
[2]	MONISMITH C L，OGAWA N，FREEME C R. Permanent deformation characteristics of subgrade soils due to repeated loading[J]. Transportation Research Record，1975，537(1)：1-17. " target="_blank">
[11]	张仪萍，俞亚南，周宏伟. 桥头粉喷桩复合地基工后沉降原因分析[J]. 岩土力学，2006，27(7)：1 171-1 175.(ZHANG Yiping，YU Yanan， ZHOU Hongwei. Study on causes of post-construction settlement of DJM pile composite foundation at bridge approaches[J]. Rock and Soil Mechanics，2006，27(7)：1 171-1 175.(in Chinese)) " target="_blank">
[13]	钟辉虹，黄茂松，吴世明，等. 循环荷载作用下软黏土变形特性研究[J]. 岩土工程学报，2002，24(5)：629-632.(ZHONG Huihong，HUANG Maosong，WU Shiming，et al. On the deformation of soft clay subjected to cyclic loading[J]. Chinese Journal of Geotechnical Engineering，2002，24(5)：629-632.(in Chinese))
[15]	ALLEN J，THOMPSON M R. Resilient response of granular materials subjected to time-dependent lateral stresses[J]. Transportation Research Record，1974，510(1)：1-13. " target="_blank">
[17]	WICHTMANN T，NIEMUNIS A，TRIANTAFYLLIDIS T. On the influence of the polarization and the shape of the strain loop on strain accumulation in sand under high-cyclic loading[J]. Soil Dynamics and Earthquake Engineering，2007，27(1)：14-28.
[18]	RONDÓN H A，WICHTMANN T，TRIANTAFYLLIDIS T，et al. Comparison of cyclic triaxial behavior of unbound granular material under constant and variable confining pressure[J]. Journal of Transportation Engineering，2009，135(7)：467-478. " target="_blank">
[20]	FUJIWARA H，YAMANOUCHI T，YASUHARA K，et al. Consolidation of alluvial clay under repeated loading[J]. Soils and Foundations，1985，25(3)：19-30. " target="_blank">
[7]	周建，龚晓南. 循环荷载作用下饱和软黏土应变软化研究[J]. 土木工程学报，2000，33(5)：75-78.(ZHOU Jian，GONG Xiaonan. Study on strain softening in saturated soft clay under cyclic loading[J]. China Civil Engineering Journal，2000，33(5)：75-78.(in Chinese)) " target="_blank">
[3]	LI D，SELIG E T. Cumulative plastic deformation for fine-grained subgrade soils [J]. Journal of Geotechnical Engineering，1996，122(12)：1 006-1 013. " target="_blank">
[4]	CHAI J C，MIURA N. Traffic-load-induced permanent deformation of road on soft subsoil[J]. Journal of Geotechnical and Geoenvironmental Engineering，2002，128(11)：907-916. " target="_blank">
[8]	殷宗泽，张海波，朱俊高，等. 软土的次固结[J]. 岩土工程学报，2003，25(5)：521-526.(YIN Zongze，ZHANG Haibo，ZHU Jungao，et al. Secondary consolidation of soft soils[J]. Chinese Journal of Geotechnical Engineering，2003，25(5)：521-526.(in Chinese))
[12]	王建华，要明伦. 软黏土不排水循环特性的弹塑性模拟[J]. 岩土工程学报，1996，18(3)：11-18.(WAGN Jianhua，YAO Minglun. Elastoplastic simulation of the cyclic undrained behavior of soft clays[J]. Chinese Journal of Geotechnical Engineering，1996，18(3)：11-18. (in Chinese))
[14]	LEKARP F，ISACSSON U，DAWSON A. State of the art. I：resilient response of unbound aggregates[J]. Journal of Transportation Engineering，2000，126(1)：66-75. " target="_blank">
[16]	BROWN S F. Soil mechanics in pavement engineering[J]. Geotechnique，1996，46(3)：383-426. " target="_blank">
[19]	GU C，WANG J，CAI Y，et al. Undrained cyclic triaxial behavior of saturated clays under variable confining pressure[J]. Soil Dynamics and Earthquake Engineering，2012，40(1)：118-128. " target="_blank">
[21]	FUJIWARA H，UE S. Effect of preloading on post-construction consolidation settlement of soft clay subjected to repeated loading[J]. Soils and Foundations，1990，30(1)：76-86. " target="_blank">
[22]	MITACHI T，KITAGO S. Change in undrained shear strength characteristics of saturated remouded clay due to swelling[J]. Soils and Foundations，1976，16(1)：45-58. " target="_blank">