In common practice, the pile–soil–raft interaction still remains a challenging problem in the analysis of piled-raft foundations. In the present study, a simplified analytical approach is introduced to analyze a vertically-loaded piled-raft foundation by using a developed homogenization technique called the two-phase approach. In spite of classical and simplified methods in the literature, the proposed method considers the pile–soil interaction. The other major advantage is the ability to predict the axial pile load along the pile length. The problem is solved in the domain of elasticity and simple closed-form solutions are presented for the prediction of the settlement and the pile load sharing of a piled raft as well as the pile's axial force distribution along its length. The applicability of the proposed method is validated by considering case studies and field measurements. A comparison of the results indicates that the method can be utilized safely in a proper, quick, and effective manner with the least computational effort in comparison with sophisticated numerical approaches. The raft settlement can be accurately predicted while the pile load sharing might be over/under estimated. A parametric study is also carried out to investigate the response of piled-raft foundations including the influence of the parameters of the soil and the geometric characteristics of the piles.

Accepted:

Published online:

Seyed Mehdi Nasrollahi ^{1};
Ehsan Seyedi Hosseininia ^{1}

@article{CRMECA_2019__347_10_716_0, author = {Seyed Mehdi Nasrollahi and Ehsan Seyedi Hosseininia}, title = {A simplified solution for piled-raft foundation analysis by using the two-phase approach}, journal = {Comptes Rendus. M\'ecanique}, pages = {716--733}, publisher = {Elsevier}, volume = {347}, number = {10}, year = {2019}, doi = {10.1016/j.crme.2019.10.002}, language = {en}, }

TY - JOUR AU - Seyed Mehdi Nasrollahi AU - Ehsan Seyedi Hosseininia TI - A simplified solution for piled-raft foundation analysis by using the two-phase approach JO - Comptes Rendus. Mécanique PY - 2019 SP - 716 EP - 733 VL - 347 IS - 10 PB - Elsevier DO - 10.1016/j.crme.2019.10.002 LA - en ID - CRMECA_2019__347_10_716_0 ER -

%0 Journal Article %A Seyed Mehdi Nasrollahi %A Ehsan Seyedi Hosseininia %T A simplified solution for piled-raft foundation analysis by using the two-phase approach %J Comptes Rendus. Mécanique %D 2019 %P 716-733 %V 347 %N 10 %I Elsevier %R 10.1016/j.crme.2019.10.002 %G en %F CRMECA_2019__347_10_716_0

Seyed Mehdi Nasrollahi; Ehsan Seyedi Hosseininia. A simplified solution for piled-raft foundation analysis by using the two-phase approach. Comptes Rendus. Mécanique, Volume 347 (2019) no. 10, pp. 716-733. doi : 10.1016/j.crme.2019.10.002. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2019.10.002/

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