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Effect of Scour Depth on Ultimate Capacity and Settlement of Piled Foundation

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Book cover Sustainability Issues for the Deep Foundations (GeoMEast 2018)

Part of the book series: Sustainable Civil Infrastructures ((SUCI))

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Abstract

Scour may cause significant effect on the bearing capacity, settlement as well as load distribution (skin friction and end bearing) of the pile foundation. In the present study, finite element analysis has been selected to develop numerical models to study the effect of scour depth on piled foundation. The analysis program consists of five groups of piles with different pile diameter from 0.50 m to 0.90 m. Each group is analyzed with different scour depths of pile dimeter from 0.00 D to 4.00 D while keeping the pile length constant. It is concluded that, the settlement of piled foundation increases with increasing scour depths. However, a decrease in the embedded depth of pile of foundation due to scour decreases skin friction. In addition, conical local scour hole causes the negative skin friction (additional vertical stress). However, the values of ultimate load capacities of piles foundation decrease with increasing scour depths. In addition, at scour depth = 4.0 pile diameter the of ultimate load capacities decrease by about 39% to 44% from ultimate load capacities of zero scour depth. However, fair agreement has been obtained between theoretical and finite element analysis.

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Author information

Authors and Affiliations

  1. Faculty of Engineering, Beni Suef University, Beni Suef, 62512, Egypt

    Wael Nashaat Abd El Samee & Mohamed Kassem Elsamny

Authors
  1. Wael Nashaat Abd El Samee
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  2. Mohamed Kassem Elsamny
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Corresponding author

Correspondence to Wael Nashaat Abd El Samee .

Editor information

Editors and Affiliations

  1. University of Western Ontario, Western Ontario, ON, Canada

    Hesham El-Naggar

  2. Leibniz University of Hannover, Hannover, Germany

    Khalid Abdel-Rahman

  3. Professional Global Expert of Geotechnical Engineering, Ottawa, ON, Canada

    Bengt Fellenius

  4. Soil-Structure Interaction Group in Egypt (SSIGE), Cairo, Egypt

    Hany Shehata

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Abd El Samee, W.N., Elsamny, M.K. (2019). Effect of Scour Depth on Ultimate Capacity and Settlement of Piled Foundation. In: El-Naggar, H., Abdel-Rahman, K., Fellenius, B., Shehata, H. (eds) Sustainability Issues for the Deep Foundations. GeoMEast 2018. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-030-01902-0_21

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