细长桩屈曲的透明土物理模型试验研究

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Abstract A small-scale 1-g physical modeling under unconfined condition，using transparent soil，was employed to observe the complete curves of buckling of fully embedded slender piles with different constraint types. Meanwhile，the soil deformations caused by buckling of slender pile were measured non-intrusively by combining particle image velocimetry(PIV) and close-range photogrammetry. The transparent soil was made of fused quartz and correspondingly refractive index matched blended oil. Transparent soil model was sliced using a laser light sheet，and digital images of soil deformations，caused by buckling of slender pile，were recorded. PIV was utilized to obtain the generated displacement fields. Analysis of test results shows that the relative buckling length increases with the increasing of pile strength and decreasing of slenderness ratio；the effect of end constraint types of pile on buckling curves is dependent on the variations of pile strength and slenderness ratio；the movements of soil elements agree well with the classic Rankine?s earth pressure theory.

Key words： physical modeling slender pile buckling transparent soil particle image velocimetry(PIV)

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[19]	ISKANDER M. Modeling with transparent soils，visualizing soil structure interaction and multiphase flow，non-intrusively[M]. New York：Springer，2010. " target="_blank">
[18]	ISKANDER M，LA J，OSWALD C，et al. Development of a transparent material to model the geotechnical properties of soils[J]. Geotechnical Testing Journal，ASTM，1994，17(4)：425-433. " target="_blank">
[22]	SADEK S，ISKANDER M G，LIU J. Geotechnical properties of transparent silica[J]. Canadian Geotechnical Journal，2002，39(1)：111-124. " target="_blank">
[23]	EZZEIN F M，BATHURST R J. Development of a geosynthetic pullout test apparatus with transparent granular soil[C]. Proceedings Pan-Am CGS geotechnical conference，Ontario，Canada，2011. " target="_blank">
[26]	MANNHEIMER R J，OSWALD C J. Development of transparent porous media with permeabilities and porosities comparable to soils，aquifers，and petroleum reservoirs[J]. Ground Water，1993，31(5)：781-788. " target="_blank">
[27]	WELKER A L，BOWDERS J J，GILBERT R B. Applied research using transparent material with hydraulic properties similar to soil[J]. Geotechnical Testing Journal，ASTM，1999，22(2)：266-270. " target="_blank">
[4]	SHANKER K，BASUDHAR P K，PATRA N R. Buckling of piles under lique?ed soil conditions[J]. Geotechnical and Geological Engineering，2007，25(3)：303-313.
[12]	庞峰，杨骁. 液化土体中单桩的稳定性分析[J]. 力学季刊，2011，32(4)：556-562.(PANG Feng，YANG Xiao. Stability analysis of a single pile in liquefied soil[J]. Chinese Quarterly of Mechanics，2011，32(4)：556-562.(in Chinese)) " target="_blank">
[15]	BHATTACHARYA S，ADHIKARI S. Vibrational characteristics of a pile structure in liquefied soil during earthquakes：Experimental Investigation(Part I) and and Analytical modelling(Part II)[R]. Oxford University Engineering Department，Department of Engineering Science，University of Oxford，2007. " target="_blank">
[20]	ISKANDER M，LIU J，SADEK S. Transparent amorphous silica to model clay[J]. Journal of Geotechnical and Geoenvironmental Engineering， ASCE，2002，128(3)：262-273. " target="_blank">
[24]	EZZEIN F M，BATHURST R J. A transparent sand for geotechnical laboratory modeling[J]. Geotechnical Testing Journal，ASTM，2011，34(6)：590-601. " target="_blank">
[28]	ISKANDER M，LIU J. Spatial deformation measurement using transparent soil[J]. Geotechnical Testing Journal，ASTM，2010，33(4)： 314-321. " target="_blank">
[30]	STANIER S A，BLACK J A，HIRD C C. Enhancing accuracy and precision of transparent synthetic soil modelling[J]. International Journal of Physical Modelling in Geotechnics，2012，12(4)：162-175. " target="_blank">
[32]	WHITE D J，TAKE W A，BOLTON M D. Soil deformation measurement using particle image velocimetry(PIV) and photogrammetry[J]. Geotechnique，2003，53(7)：619-631. " target="_blank">
[5]	GABR M A，WANG J J，ZHAO M. Buckling of piles with general power distribution of lateral subgrade reaction[J]. Journal of Geotechnical and Geoenvironmental Engineering，1997，123(2)：123-130. " target="_blank">
[16]	BHATTACHARYA S. Pile instability during earthquake liquefaction：[D]. Cambridge：University of Cambridge，2003. " target="_blank">
[29]	NI Q，HIRD C C，GUYMER I. Physical modelling of pile penetration in clay using transparent soil and particle image velocimetry[J]. Geotechnique，2010，60(2)：121-132. " target="_blank">
[31]	SADEK S，ISKANDER M，LIU J. Accuracy of digital image correlation for measuring deformations in transparent media[J]. Journal of Computing in Civil Engineering，ASCE，2003，17(2)： 88-96. " target="_blank">
[2]	LIN S，CHANG W. Buckling of piles in a layered elastic medium[J]. Journal of the Chinese Institute of Engineers，2002，25(2)：157-169. " target="_blank">
[6]	VOGT N，VOGT S，KELLNER C. Buckling of slender piles in soft soils[J]. Bautechnik Special Issue 2009-Geotechnical Engineering，2009，86(Supp.1)：98-112. " target="_blank">
[9]	DAVISSON M T，ROBINSON K E. Bending and buckling of partially embedded piles[A]. Proc. 6th Int. Conf. Soil Mech. Found. Engng 1965：243-246. " target="_blank">
[11]	程昌钧，朱媛媛，胡育佳. 桩基的稳定性：理论和最新进展[J]. 固体力学学报，2010，31(5)：572-586.(CHENG Changjun，ZHU Yuanyuan，HU Yujia. Stability of piles：Theories and recent progress[J]. Acta Mechanica Solida Sinica，2010，31(5)：572-586.(in Chinese)) " target="_blank">
[14]	HALDAR S，BABU G L S，BHATTACHARYA S. Buckling and bending response of slender piles in liquefiable soils during earthquakes[J]. Geomechanics and Geoengineering：An International Journal，2008，3(2)：129-143. " target="_blank">
[17]	BHATTACHARYA S，BOLTON M. Buckling of piles during earthquake liquefaction[C]. 13th World Conference on Earthquake Engineering，Vancouver，B. C.，Canada：2004，Paper No. 95：1-15. " target="_blank">
[1]	FLEMING K W A，RANDOLPH M，ELSON K. Piling Engineering[M]. New York：Taylor and Francis，2009. " target="_blank">
[3]	SHERAFATI A，CHAFI M S，AZIZINAMINI A. Buckling of piles in cohesive soil supporting jointless bridges[J]. Bridge Structures，2012， 8(1)：15-24. " target="_blank">
[7]	HAN J，FROST J D. Buckling of vertically loaded fiber-reinforced polymer piles[J]. Journal of Reinforced Plastics and Composites，1999，18(4)：290-318. " target="_blank">
[8]	REDDY A S，VALSANGKAR A J. Buckling of fully and partially embedded piles[J]. Journal of the Soil Mechanics and Foundations Division，1970，96(6)：1 951-1 965. " target="_blank">
[10]	黄雨，郝亮. 液化地基中桩的破坏机理研究进展[J]. 工程地质学报，2008，16(2)：184-189. (HUANG Yu，HAO Liang. Advances in failure mechanisms of pile foundations in liquefaction soils[J]. Journal of Engineering Geology，2008，16(2)：184-189.(in Chinese))
[13]	DASH S R，BHATTACHARYA S，BLAKEBOROUGH A. Bending- buckling interaction as a failure mechanism of piles in liquefiable soils[J]. Soil Dynamics and Earthquake Engineering，2010，30(1)：32-39. " target="_blank">
[21]	LIU J，ISKANDER M，SADEK S. Consolidation and permeability of transparent amorphous silica[J]. Geotechnical Testing Journal，ASTM，2003，26(4)：1-12. " target="_blank">
[25]	GUZMAN I L，ISKANDER M，SUESCUN E，et al. A transparent aqueous-saturated sand surrogate for use in physical modeling[J]. Acta Geotechnica，2014，9(2)：187-206 " target="_blank">