Evaluation of Pile Technique to Improve Weak Subgrade Soil Under Traffic Loading

 
 
 
  • Abstract
  • Keywords
  • References
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  • Abstract


    The quick imperative for transportation development has driven thruway specialists to find safe approaches to construct the foundation of roadway on delicate subgrade layers. Nonetheless, Delicate immersed fine-grained subgrade soils are remarkable by extraordinary volume change and little shear quality. Numerous issues identified with building roadway dikes over delicate subgrade layer i.e.; dikes flimsiness, high settlements and tedious required for union of the establishment soil. The impact of utilizing Heaped dike to upgrade the execution of asphalt frameworks including increment the roadway benefit life. The investigational work included paired models: crude materials model and heaps show were considered. A research center model tests are completed to created the black-top asphalt layers and configuration cycling load framework likewise to the standard single pivot wheel stack, that were organized amid a plan and amassing of metal Box show. Three-dimensional (3-D) limited component models has been altered in this work for adaptable asphalt setup utilizing ABAQUS programming ver.6.14.4 to break down and reenact the reaction of the asphalt layers of all models with the cycles connected load and soil relocation. The aftereffects of this work demonstrate that the lasting dislodging at the surface of black-top solid (air conditioning) layer utilizing the heap strategy display as contrasted and the crude material model shows diminishes by (14.62%). The consequences of ABAQUS program have a decent concurrence with the trial results.

     


  • Keywords


    Cycling loading, flexible pavement, piles, weak subgrade.

  • References


      [1] ABAQUS Theory User's manual, (2009) Ver. 6.9, Inc., Pawtucket, USA.

      [2] ASTM (2009): “Road and Paving Materials”, Annual Book of ASTM Standards, Volume 04.03, American Society for Testing and Materials,” West Conshohocken, USA.

      [3] British Standard B.S: C.P. 8004 (1986), "Code of Practice for Foundations", BS Institution, London.

      [4] Fadhil S.H., (2015): “Behavior of Single and Group Model Piles in Saturated and Unsaturated Expansive Soils”, Ph.D. Thesis, College of Engineering, Al-Nahrain University.

      [5] Huang, Y.H., Pavement analysis and design. (2004), United States of America: Pearson/Prentice Hall.

      [6] Iraq standard specification, (2003), "Hot Mix Asphalt Concrete Pavement". State Commission of Roads and Bridges (SCRB), Ministry of Housing and construction, Department of Design and Study.

      [7] Masood, G.G. (2013): '' Experimental and Numerical Investigation of stabilized unbound Granular Pavement Materials'' AL-Mustansiriya University College of Engineering Highway and Transportation Engineering Department MSc Thesis.

      [8] Mohammed, D. E., (2015):"Develop A Criteria To Improve Permanent Deformation Of Pavement Layers On Weak Subgrade Soil", M.Sc, Thesis Faculi of eng., Mustansiriyah University.

      [9] Zaghloul, S.M., and White, T.D., “Use of a Three-Dimensional, Dynamic Finite Element Program for Analysis of Flexible Pavement”, In Transportation Research Record 1388, TRB, National Research Council, Washington, D., C., 1993, 60-69, USA.


 

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Article ID: 26419
 
DOI: 10.14419/ijet.v7i4.20.26419




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