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Influence of combined loading on static response of optimum CPRF with non-uniform pile length configurations

Influence of combined loading on static response of optimum CPRF with non-uniform pile length... Non-uniform pile lengths are often embraced for optimum design of piled raft and to assure the economy in construction. Considerable researches have been endeavoured to examine the responses of such a foundation under gravity load. In reality, combined piled raft foundation (CPRF) often encounters combined vertical (V), horizontal (H), and moment (M) load simultaneously due to wind, earthquake, and wave load along with load from the superstructure, substructure, and vertical soil pressure. Present research, therefore, aims to examine the impact of combined load on lateral responses of optimally designed CPRF system with non-uniform piles length in sandy soil. The three-dimensional finite element analysis of CPRF is performed considering the non-linear behaviour of soil in PLAXIS 3D [PLAXIS 3D V8 (2008) in [Computer software].PLAXIS BV, Netherlands]. The study indicates that CPRF having a shorter pile at the centre and longer piles at the periphery of a piled raft offer equivalent lateral capacity as that of uniform length piled raft configuration. In contrast, long piles at a centre and short piles at the periphery in a CPRF develop relatively lesser lateral capacity compared to the CPRF having uniform pile length. This study helps to offer critical inputs for framing design guidelines of CPRF with non-uniform pile length configuration under combined loading. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Innovative Infrastructure Solutions Springer Journals

Influence of combined loading on static response of optimum CPRF with non-uniform pile length configurations

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References (55)

Publisher
Springer Journals
Copyright
Copyright © Springer Nature Switzerland AG 2022
ISSN
2364-4176
eISSN
2364-4184
DOI
10.1007/s41062-022-00778-z
Publisher site
See Article on Publisher Site

Abstract

Non-uniform pile lengths are often embraced for optimum design of piled raft and to assure the economy in construction. Considerable researches have been endeavoured to examine the responses of such a foundation under gravity load. In reality, combined piled raft foundation (CPRF) often encounters combined vertical (V), horizontal (H), and moment (M) load simultaneously due to wind, earthquake, and wave load along with load from the superstructure, substructure, and vertical soil pressure. Present research, therefore, aims to examine the impact of combined load on lateral responses of optimally designed CPRF system with non-uniform piles length in sandy soil. The three-dimensional finite element analysis of CPRF is performed considering the non-linear behaviour of soil in PLAXIS 3D [PLAXIS 3D V8 (2008) in [Computer software].PLAXIS BV, Netherlands]. The study indicates that CPRF having a shorter pile at the centre and longer piles at the periphery of a piled raft offer equivalent lateral capacity as that of uniform length piled raft configuration. In contrast, long piles at a centre and short piles at the periphery in a CPRF develop relatively lesser lateral capacity compared to the CPRF having uniform pile length. This study helps to offer critical inputs for framing design guidelines of CPRF with non-uniform pile length configuration under combined loading.

Journal

Innovative Infrastructure Solutions – Springer Journals

Published: Apr 1, 2022

Keywords: CPRF; Combined loading; Finite element; Non-uniform pile length; PLAXIS 3D

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