Numerical investigation of the cushion-dependent behaviour of disconnected piled raft system

CRC Press eBooks 2026 Book chapter

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Authors: S. Raut, P. Halder, B. Manna, J. T. Shahu
DOI: 10.1201/9781003645955-32
Cited by: 0

Abstract

Disconnected piled rafts (DPRs) reduce pile stress while maintaining load-bearing capacity. This PLAXIS 3D study analyzes DPRs in sandy soil, evaluating cushion thickness (0.5–2.5 m), stiffness (10–60 MPa), and pile spacing (2d–4d). Cushion thickness improves settlement efficiency by 14% and reduces pile load by 17%. A stiffer cushion improves settlement efficiency from 23.5% to 50.21%, while increased pile spacing enhances load distribution. Optimizing these parameters significantly improves DPR performance in sandy soil foundations.

Fields of Study & Subjects

Geotechnical Engineering and Soil Mechanics Geotechnical Engineering and Soil Stabilization Soil Finite Element Methods

Publication details

Journal / source
CRC Press eBooks
Pages
271–277
Publication date
12 March 2026
Language
EN
Document type
Book chapter