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Subsoil compressibility effect in an end bearing scaled pile-supported embankment, investigation of the load transfer mechanism

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Abstract

This paper investigates the effect of subsoil compressibility on the efficiency of piles supporting embankments. The analysis was carried out on a 1:10 scaled model comprising 36 piles and using selected foam to simulate the behavior of the compressible soil. Experimental tests were carried out to assess the efficiency of these piles for two different thicknesses of compressible soil. Following this, numerical modeling of the reduced model was carried out. Thus, the embankment was considered to be elastic perfectly plastic material. For compressible soil and piles, the model adopted is linear elastic. The numerical analysis confirmed the experimental findings and provided a good understanding of the effect undergone by the load transfer mechanism following a variation of the subsoil stiffness. Especially it showed that the subsoil compressibility affects load transfer pile efficiency but almost without effect on the critical ratio of the pile clear spacing to embankment height. Besides, this study showed that the used scaled model reproduces well the characteristic features of the load transfer mechanism in pile-supported embankments.

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Authors and Affiliations

  1. Department of Civil Engineering, FERHAT Abbas, SETIF 1 University, Sétif, Algeria

    Felouat Samira, Mokrani Larbi & Mansouri Mouloud

  2. INSA de Lyon, GEOMAS, University of Lyon, 69621, Lyon, France

    Briançon Laurent

Authors
  1. Felouat Samira
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  2. Mokrani Larbi
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  3. Mansouri Mouloud
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  4. Briançon Laurent
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Correspondence to Felouat Samira.

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Samira, F., Larbi, M., Mouloud, M. et al. Subsoil compressibility effect in an end bearing scaled pile-supported embankment, investigation of the load transfer mechanism. Innov. Infrastruct. Solut. 7, 75 (2022). https://doi.org/10.1007/s41062-021-00672-0

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