K0条件下砂土原生各向异性的动剪切模量试验研究

Abstract
Figure/Table
References (24)
Related Citation (15)

Download: PDF (2038 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Dynamic shear modulus is a critical factor for sand in engineering practice. In order to evaluate the effects of fabric anisotropy on dynamic shear modulus，the measurement of wave velocity by bender element technique is conducted. The special container is manufactured to prepare the model with deposition angles of 0°，±45°and 90°. The Toyoura sand specimens with specified deposition angles are tested in loading and unloading conditions. The results show that the sand sample prepare in the deposition angle of 90° has the largest shear modulus in horizontal and vertical directions. It is found that in unloading condition，specimens with different deposition angles show different responses for stress history，and response of sand sample with deposition angle of 90° is most obvious，which verify that influence of deposition angle on small strain shear stiffness of sand is very significant. Based on the results，a micromechanical stress-strain model is validated，which could show the influences of fabric anisotropy，stress condition and particle contact characteristics on dynamic shear modulus reasonably.

Key words： soil mechanics anisotropy K0 condition shear modulus bender element

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Bo1
	2
	YU Chuang1
	ZENG Xiangwu3

Cite this article:

LI Bo1,2,YU Chuang1, et al. EFFECT OF FABRIC ANISOTROPY ON DYNAMIC SHEAR MODULUS IN K0 CONDITION[J]. , 2013, 32(s2): 4048-4055.

URL:

https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/4048

[1] 刘瑜，夏唐代. 砂土颗粒粗糙度对剪切波速影响的试验研究[J]. 岩土工程学报，2011，33(2)：285–290.(LIU Yu，XIA Tangdai. Experimental study on influence of particle roughness on shear wave velocity of sand[J]. Chinese Journal of Geotechnical Engineering，2011，33(2)：285–290.(in Chinese))

[2] ARTHUR J R F，MENZIES B K. Inherent anisotropic in sand[J]. Geotechnique，1972，22(1)：115–128.

[3] ODA M，KOISHIKAWA I. Anisotropic fabric of sands[C]// Proceedings of the 9th International Conference on Soil Mechanics and Foundation Engineering. Tokyo，Japan：[s. n.]，1977：235–238..

[4] 宋飞，张建民，刘超. 各向异性砂土K₀试验研究[J]. 岩土力学，2010，31(12)：3 727–3 735.(SONG Fei，ZHANG Jianmin.，LIU Chao. Experimental study of K₀ of anisotropic sand[J]. Rock and Soil Mechanics，2010，31(12)：3 727–3 735.(in Chinese))

[5] 宋飞，张建民. 考虑侧向变形的各向异性砂土土压力试验研究[J]. 岩石力学与工程学报，2009，28(9)：1 884–1 895.(SONG Fei，ZHANG Jianmin. Experimental study of earth pressure for anisotropic sand considering lateral displacement[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(9)：1 884–1 895.(in Chinese))

[6] 张坤勇，殷宗泽，梅国雄. 土体两种2种各向异性的区别和联系[J]. 岩石力学与工程学报，2004，25(9)：1 599–1 603.(ZHANG Kunyong，YIN Zongze，MEI Guoxiong. Difference and connection of two kinds of anisotropy of soils[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(9)：1 599–1 603.(in Chinese))

[7] LI B，ZENG X，MIN H Y. Seismic responses of a retaining wall with anisotropic backfill[C]// Geotechnical Special Publication. ASCE，2010，208：688–695.

[8] YIMSIRI S，SOGA K. Micromechanics-based stress-strain behavior of soils and small strains[J]. Geotechnique，2000，50(5)：559–571.

[9] LAWRENCE F. V. Propagation of ultrasonic waves through sand[R]. Research Report R63-08. Cambridge：Massachusetts Institute of Technology，1963

[10] SHIRLEY D，HAMPTON L D. Shear wave measurements in laboratory sediments [J]. Journal of the Acoustical Society of America，1978，63(2)：607–613.

[11] ZHOU Y G，CHEN Y M. Laboratory investigation on assessing liquefaction resistance of sandy soils by shear wave velocity[J]. Journal of Geotechnical and Geoenvironmental Engineering，2007，133(8)：959–972.

[12] ZENG X，NI B. ~~Stress~~ Stress-induced anisotropic G_max of sands and its measurement[J]. Journal of Geotechnical and Geoenvironmental Engineering，ASCE，1998，125(9)：741–749.

[13] HARDIN B O，BLANDFORD G E. Elasticity of particulate materials[J]. Journal of Geotechnical Engineering，1989，115(6)：788–805.

[14] ZENG X，FIGUEROA J L，FU L. Measurement of base and subgrade layer stiffness using bender element technique[C]// Geotechnical Special Publication，ASCE， 2003，123：35–45.

[15] FU L，ZENG X，FIGUEROA J L. Shear wave velocity measurement in centrifuge using bender elements[J]. International Journal of Physical Modelling in Geotechnics，2004，4(2)：1–11.

[16] KARL L，HAEGEMAN W，DEGRANDE G，et al. Determination of the material damping ratio with the bender element test[J]. Journal of Geotechnical and Geoenvironmental Engineering，2008，134(12)：1 743–1 756.

[17] CHANG I H，CHO G C，LEE J G，et al. Characterization of clay sedimentation using piezoelectric bender elements[J]. Key Engineering Material，2006，321/322/323：1 415–1 420.

[18] FRATTA D，ALSHIBLI K A，TANNER W M，et al. Combined TDR and P-wave velocity measurements for the determination of in situ soil density—experimental study[J]. Geotechnical Testing Journal，2005，28(6)：553–563.

[19] LEE J S，SANTAMARINA J C. Bender elements：performance and signal interpretation[J]. Journal of Geotechnical and Geoenvironmental Engineering，2005，131(9)：1 063–1 070.

[20] DYVIK R，MADSHUS C. Lab measurements of G_max using bender elements[C]// Advances in the Art of Testing Soils under Cyclic Conditions Conference. Detroit：ASCE，1985：186–196.

[21] HRYCIW R D，THOMANN T G. Stress-history-based model for G^e of cohesionless soils[J]. Journal of Geotechnical Engineering，ASCE，1993，119(7)：1 073–1 093.

[22] LEONG E C，YEO S H，RAHARDJO H. Measuring shear wave velocity using bender elements[J]. Geotechnical Testing Journal，2005，28(5)：488–498.

[23] WANG Y H，MOK C M. Mechanism of small strain shear modulus anisotropy in soils[J]. Journal of Geotechnical and Geoenvironmental Engineering，2008，134(10)：1 516–1 530.

[24] LI B. Effect of fabric anisotropy on dynamic mechanical behavior of granular material[Ph. D. Thesis][D]. Cleveland，USA：Department of Civil Engineering，Case Western Reserve University，2011.