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Paper Title
Investigation of the Distribution of Skin Friction on Single Pile Constructed In Natural Soft Clay Soil Treated With Stone Columns
  Osama Mohamed Mahmoud Hegazy ,  Mostafa Abdou Abd El-Naiem ,  Ahmed Rushedy Towfeek

When any pile is constructed in a soft clay soil may experience dragload and down drag due to the negative friction acting along the pile shaft. In addition soft soil may settle more than the pile, thus generating a negative skin friction along the pile shaft. This negative friction induces additional axial compressive load to the pile dragload and this force pulls the pile further downward. On the other hand Consolidation and settlement of soft clay deposit's surrounding the pile are usually drag the pile downward and it causes a down drag movement to the shaft of the pile. The down- drag movement induces additional loads to the actual loaded pile. This force is expressed as negative skin friction. In this study the distribution of skin friction on single pile during consolidation of soft clay and soft clay stabilized with stone columns have the same diameter and material were studied in the laboratory. The pile is covered with sand paper and it’s ended either in soft clay soil, or sand, or soft soil treated with stone columns, whereas, the soft clay layers were allowed to consolidate under the uniform surcharge load equals to 10KN/m2. This study showed that the relative movement between the pile and surrounding soil produces shear stress along the pile shaft and the surrounding soil. In addition to, the neutral plane is depending on stiffness of the bearing soil at pile toe. The stone columns increase the load capacity of the pile and reduce the settlement of the soft clay soils.

Keywords- Pile foundation, negative skin friction, Neutral plane, consolidation, soft soils, settlement rate, stone column, shear stress
Publication Details
Unique Identification Number - IJEDR1503099
Page Number(s) - 1-10
Pubished in - Volume 3 | Issue 3 | September 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
  Osama Mohamed Mahmoud Hegazy ,  Mostafa Abdou Abd El-Naiem ,  Ahmed Rushedy Towfeek,   "Investigation of the Distribution of Skin Friction on Single Pile Constructed In Natural Soft Clay Soil Treated With Stone Columns", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 3, pp.1-10, September 2015, Available at :http://www.ijedr.org/papers/IJEDR1503099.pdf
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