|本期目录/Table of Contents|

[1]朱洵,王炼,王旭东.砂土变形扩散传播特性试验研究[J].南京工业大学学报(自然科学版),2018,40(02):95-101.[doi:10.3969/j.issn.1671-7627.2018.02.016]
 ZHU Xun,WANG Lian,WANG Xudong.Experimental study of characteristics of deformation diffusion-convection in sand[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(02):95-101.[doi:10.3969/j.issn.1671-7627.2018.02.016]
点击复制

砂土变形扩散传播特性试验研究()
分享到:

《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年02期
页码:
95-101
栏目:
出版日期:
2018-03-20

文章信息/Info

Title:
Experimental study of characteristics of deformation diffusion-convection in sand
文章编号:
1671-7627(2018)02-0095-07
作者:
朱洵王炼王旭东
南京工业大学 岩土工程研究所,江苏 南京 210009
Author(s):
ZHU XunWANG LianWANG Xudong
Institute of Geotechnical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
砂土 变形 扩散传播 模型试验
Keywords:
sand deformation diffusion-convection model test
分类号:
P641
DOI:
10.3969/j.issn.1671-7627.2018.02.016
文献标志码:
A
摘要:
针对土体变形在上覆土体中的扩散传播问题,设计了土体变形扩散传播模型试验。通过设定底部位移边界,结合数字图像相关技术(PIV)研究中砂中土体变形扩散传播特性,探讨边界位移模式对土体变形扩散传播的影响规律。结果表明:边界位移在砂土中呈现扩散传播规律,不仅在土体中引起竖向位移,还引起水平位移; 土体竖向位移呈现与底部边界位移相类似的分布特征,而土体水平位移沿模型中心呈对称分布; 土体变形扩散传播导致土体体积和密度变化,研究成果为合理建立土体变形扩散传播模型奠定了试验依据。
Abstract:
For theissues of deformation diffusion-convection in the overlying soil,a indoor model tested by using the particle image velocimetry(PIV)technology and setting device of bottom displacement boundary,was designed to investigate the diffusion-convection characteristics of soil deformation in medium sand.The rule of deformation diffusion-convection was discussed in the different boundary displacement modes.The results indicated that the boundary displacement was diffused upwards in the overlying soil.The deformation diffusion-convection not only caused the vertical displacement,but also caused the horizontal displacement.The distribution of vertical displacement was similar to the bottom boundary displacement mode.The horizontal displacement was distributed symmetrically along the center of the model.The deformation diffusion-convection leaded to the change of volume and density of soil.The test results provided experimental foundation for establishing the mathematical model of the deformation diffusion-convection of soil.

参考文献/References:

[1] 张阿根,刘毅,龚士良.国际地面沉降研究综述[J].上海地质,2000(4):1.
[2] HOLZER T L,GALLOWAY D L.Impacts of land subsidence caused by withdrawal of underground fluids in the United States[J].Reviews in engineering geology,2005,16(8):87.
[3] 阳军生,刘宝琛.抽水地面沉降预计的随机介质模型[J].水文地质工程地质,1999,26(5):11.
[4] 吴铭辉,王旭东.隧道施工引起上覆土层变形规律研究[J].南京工业大学学报(自然科学版),2015,37(2):97.
[5] 龚晓南,张杰.承压水降压引起的上覆土层沉降分析[J].岩土工程学报,2011,33(1):145.
[6] NIU W J,WANG Z,CHEN F,et al.Settlement analysis of a confined sand aquifer overlain by a clay layer due to single well pumping[J].Mathematical problems in engineering,2013(1):1.
[7] PECK R B.Deep excavations and tunneling in soft ground[C]//Proceedings of 7th International Conference on Soil Mechanics and Foundation Engineering.Mexico City:State of the Art Report,1969.
[8] ATTEWELL P B,WOODMAN J P.Predicting the dynamics of ground settlement and its derivatives caused by tunneling in soil[J].Ground engineering,1982,15(8):323.
[9] LEE K M,ROWE R K,LO K Y.Subsidence owing to tunneling:I.estimating the gap parameter [J].Canadian geotechnical journal,1992,29(6):929.
[10] 韩煊,李宁,STANDING J R.Peck 公式在我国隧道施工地面变形预测中的适用性分析[J].岩土力学,2007,28(1):23.
[11] AHMED M,ISKANDER M.Analysis of tunneling-induced ground movements using transparent soil models[J].Journal of geotechnical and geoenvironmental engineering,2010,137(5):525.
[12] LIN M L,CHUNG C F,JENG F S.Deformation of overburden soil induced by thrust fault slip[J].Engineering geology,2006,88(1):70.
[13] TERZAGHI K.Stress distribution in dry and saturated sand above a yielding trap-door[C]//Proceedings of First International Conference on Soil Mechanics and Foundation Engineering.Cambridge:Harvard University,1936:307.
[14] 陈亚东,王旭东,佘跃心.竖向受荷PCC桩宏细观工作性状研究[J].岩石力学与工程学报,2015,34(7):23.
[15] 王世鑫,王旭东.基于粒子图像测速技术的黏性土变形测量研究[J].南京工业大学学报(自然科学版),2015,37(2):102.
[16] LITWINISZYN J.Statistical methods in the mechanics of granular bodies[J].Rheologica acta,1958,1(2):146.
[17] VARDOULAKIS I,VAIRAKTARIS E,PAPAMICHOS E.Subsidence diffusion-convection:I.The direct problem[J].Computer methods in applied mechanics and engineering,2004,193(27):2745.

相似文献/References:

[1]王艳飞,耿鲁阳,巩建鸣.热处理对超厚板焊接残余应力影响的数值分析[J].南京工业大学学报(自然科学版),2013,35(01):1.[doi:10.3969/j.issn.1671-7627.2013.01.014]
 WANG Yanfei,GENG Luyang,GONG Jianming.Numerical analysis of effects of heat treatment on residual stress in butt-welded super thick plates[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(02):1.[doi:10.3969/j.issn.1671-7627.2013.01.014]
[2]沈妍,张红,许辉,等.多孔介质-钠液体系微尺度热流固耦合模拟[J].南京工业大学学报(自然科学版),2014,36(02):54.[doi:10.3969/j.issn.1671-7627.2014.02.009]
 SHEN Yan,ZHANG Hong,XU Hui,et al.Simulation of porous media-liquid sodium system in micro-scale by thermal fluid structure coupled method[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(02):54.[doi:10.3969/j.issn.1671-7627.2014.02.009]

备注/Memo

备注/Memo:
收稿日期:2016-05-10
基金项目:国家自然科学基金(41272303); 江苏省六大人才高峰基金(09-F-004)
作者简介:朱洵(1990—),男,江苏盐城人,硕士,主要研究方向为岩土工程; 王旭东(联系人),教授,E-mail: cewxd@njtech.edu.cn.
引用本文:朱洵,王炼,王旭东.砂土变形扩散传播特性试验研究[J].南京工业大学学报(自然科学版),2018,40(2):95-101..
更新日期/Last Update: 2018-03-30