Computational Research Progress in Applied Science & Engineering



  Home     Guide for Authors     Editors     Submission     Archive     Contact     Publication Ethics     Indexing  




News & Events Computational Research Progress in Applied Science & Engineering: An international Journal (CRPASE) - ISSN : 2423-4591 Technically supported Conferences


 
 
 
 
Volume 03 Issue 03
   Volume & Issue: Volume 03 Issue 03



Numerical Modelling of Size Effect on Subgrade Reaction Modulus Using DEM

  Volume 03,Issue 03

 

Author :

Hadi Ahmadi, Saman Farzi Sizkow

 

Abstract :

In the flexible foundation analysis theories, such as beam on elastic foundation and Winkler’s model, the modulus of subgrade reaction is proposed as the soil’s resilience coefficient in a semi-infinite environment. The modulus of subgrade reaction is usually determined in field-study form and through the plate loading test. One of the influential parameters in the modulus of subgrade reaction is the size of the particles and aggregates. The present research has evaluated the effect of particle size on the modulus of subgrade reaction using numerical simulation and discrete element method. To this aim, samples with completely identical granulation conditions as well as samples with relatively uniform granulation, having finite particle range were modeled in different sizes and stress-displacement variations were measured in them through the discrete element method. Given the uniformity of type and shape of the aggregates, the results of the numerical modeling show that the medium size has a direct relationship with the modulus of subgrade reaction of the sand; specifically, in the high percentage density, increase in size of the aggregates greatly increases the modulus of subgrade reaction. These variations are almost linear in completely uniform aggregates and show a relatively logarithmic process in samples with a limited size range.



 

Keywords :

Size effect, Modulus of subgrade reaction, Discrete element method, Uniform sand, Plate load test.

  << Previous page | PDF




CHTE 2017


ICONTES 2017


NOCMAT 2017


CSC2017
Abstracting
&
Indexing
Google Scholar        Transportation Research Board (TRB)        Scholar Article Impact Factor (SAIF=4)         Global Impact Factor (GIF = 0.676)        OCLC WorldCat        Electronic Journals Library (EZB)        Cite Factor        Bibliothekssystem Universität Hamburg        GBV databases        ZB MED - Leibniz Information Centre for Life Sciences        Zeitschriften Daten Bank (ZDB)        Journal Access of Open Directory (JAOD IF= 3.44)        SPARC INDEXING        Universitas Biblioteck Leipzig (UBL)        Leibniz Information Center for Science and Technology University Library (TIB)        LEUPHANA Uinversitat Luneburg         Directory of Research Journals Indexing        ROAD        CIVILICA        COSMOS IMPACT FACTOR        Scientific World Index        International Innovative Journal Impact Factor (IIJIF)         International Society of Indexing        Indian Science        Genamics Journal Seek        Regional information Center for Science and Technology (RICEST)        Directory of Science        Kanazawa University Library        The International CONstruction DAtabase (ICONDA)        Index Copernicus (ICV 2016 = 71.78)