›› 2010, Vol. 31 ›› Issue (5): 1645-1650.

• Numerical Analysis • Previous Articles     Next Articles

3-D granular simulation for compressibility of soil-aggregate mixture

YANG Bing 1, 2, YANG Jun 1, 2, CHANG Zai3, GAN Hou-yi 4, SONG Er-xiang 1, 2   

  1. 1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 2. Key Laboratory of Structure Engineering and Vibration of China Education Ministry, Tsinghua University, Beijing 100084, China; 3. China Architecture Design & Research Group, Beijing 100044, China; 4. Institute of Foundation Engineering, China Academy of Building Research, Beijing 100013, China
  • Received:2008-10-29 Online:2010-05-10 Published:2010-05-24

PDF (Chinese)

2989

Abstract:

Soil-aggregate mixture is composed of gravel or cobble as its coarse grain and clay or sand as its filling. Whether natural or man-made, the mechanical properties of this material are widely different from homogeneous and continuous soil or rock. The engineering background of this paper is the high fill of Kunming new airport project in which a large number of soil-aggregate mixtures will be used as filling material. Through the numerical simulation of confined compression tests with 3D particle flow models, we compared the micromechanical fabrication and basic mechanical properties of the soil-aggregate mixture with different grain size distributions. Then we put forward a zone of the ratio of rock to soil which could be used in the project. The influence of different ratios of the stone in the mixture to their fabrication was also investigated. This simulation is a valuable attempt for application of particle flow method to practical engineering project.

Key words: soil-aggregate mixture, granular mechanics, fabrication, confined compression test, optimal ratio of rock

CLC Number: 

  • TU 411
[1] LI Qiao-yan ，WANG Hui-dong ，MA Guo-wei ，LI Zhi-jian ，ZHOU Han-min ，CUI Xuan，. An experimental study of the mechanical performance of tailings dam geofabriform [J]. , 2016, 37(4): 957-964.
[2] XU Xi-chang, ZHOU Wei, HAN Zhuo, QIN Shang-lin, LI Jian-xin. Research on compaction properties of soil-aggregate mixture [J]. , 2010, 31(S2): 115-118.
[3] XU Chao, GUO Hong-feng, YANG Xiao-ming , XING Hao-feng. Comparation analyses of the effects of marine soft soil improved by portland cement and slag cement [J]. , 2009, 30(9): 2737-2740.
[4] SHI Jian-yong, MAO Jun. Experimental research of strength characteristics of solid waste mixed with cement [J]. , 2009, 30(7): 1951-1954.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] XIANG Tian-bing, FENG Xia-ting, CHEN Bing-rui, JIANG Quan, ZHANG Chuan-qing. Rock failure mechanism and true triaxial experimental study of specimens with single structural plane under three-dimensional stress[J]. , 2009, 30(10): 2908 -2916 .
[2] ZHANG Yi-hu, ZHOU Huo-ming, WU Ai-qing. Post processing of discontinuity network modeling result[J]. , 2009, 30(9): 2855 -2861 .
[3] YANG Guang, SUN Xun, YU Yu-zhen, ZHANG Bing-yin. Experimental study of mechanical behavior of a coarse-grained material under various stress paths[J]. , 2010, 31(4): 1118 -1122 .
[4] WEN Shi-qiang, CHEN Yu-min, DING Xuan-ming, ZUO Wei-long. Application of grouted gravel pile in soft subgrade improvement of expressway[J]. , 2010, 31(5): 1559 -1563 .
[5] ZHANG Chang-guang，ZHANG Qing-he，ZHAO Jun-hai. Unified solutions of shear strength and earth pressure for unsaturated soils[J]. , 2010, 31(6): 1871 -1876 .
[6] YANG Tian-hong, CHEN Shi-kuo, ZHU Wan-cheng, LIU Hong-lei. Coupled model of gas-solid in coal seams based on dynamic process of pressure relief and gas drainage[J]. , 2010, 31(7): 2247 -2252 .
[7] HU Xiu-hong，WU Fa-quan. Research on two-parameter negative exponential distribution of discontinuity spacings in rock mass[J]. , 2009, 30(8): 2353 -2358 .
[8] LI Wei-chao, XIONG Ju-hua, YANG Min. Improved method for calculating anti-overturning safety factor of cement-soil retaining wall in layered soil[J]. , 2011, 32(8): 2435 -2440 .
[9] ZHANG Gui-min , LI Yin-ping , SHI Xi-lin , YANG Chun-he , WANG Li-juan. Research on a model material preparation method for alternate layered rock mass and preliminary experiment[J]. , 2011, 32(S2): 284 -289 .
[10] WANG Wei LI Xiao-chun LI Qiang SHI Lu WANG Ying BAI Bing. Small size in-situ transient pulse permeability measurement system and its experimental research[J]. , 2011, 32(10): 3185 -3189 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd