Journal ArticleDOI
Piled raft foundations: design and applications
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In this paper, the authors discuss the philosophy of using piles as settlement reducers and the conditions under which such an approach may be successful and some of the characteristics of piled raft behavior are described.Abstract:
In situations where a raft foundation alone does not satisfy the design requirements, it may be possible to enhance the performance of the raft by the addition of piles. The use of a limited number of piles, strategically located, may improve both the ultimate load capacity and the settlement and differential settlement performance of the raft. This paper discusses the philosophy of using piles as settlement reducers and the conditions under which such an approach may be successful. Some of the characteristics of piled raft behaviour are described. The design process for a piled raft can be considered as a three-stage process. The first is a preliminary stage in which the effects of the number of piles on load capacity and settlement are assessed via an approximate analysis. The second is a more detailed examination to assess where piles are required and to obtain some indication of the piling requirements. The third is a detailed design phase in which a more refined analysis is employed to confirm the op...read more
Citations
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Journal ArticleDOI
Science and empiricism in pile foundation design
TL;DR: In this article, the authors address the degree of confidence we can now place on the conceptual and analytical frameworks for estimating pile capacity, and on the quantitative parameters required to achieve a design, restricted to driven piles in clays and siliceous sands.
Journal ArticleDOI
Bearing Capacity of Piled Rafts on Soft Clay Soils
TL;DR: Based on both experimental evidence and three-dimensional finite element analyses, a simple criterion is proposed to evaluate the ultimate vertical load of a piled raft as a function of its component capacities, which can be simply evaluated by the conventional bearing capacity theories as discussed by the authors.
Journal ArticleDOI
Design strategies for piled rafts subjected to nonuniform vertical loading
O. Reul,Mark Randolph +1 more
TL;DR: In this paper, the results of the parametric study are presented and design strategies for an optimized design of piled rafts subjected to non-uniform vertical loading are discussed, where the load distribution on the raft has been varied by means of three dimensional elastoplastic finite element analyses.
Journal ArticleDOI
Piled rafts in overconsolidated clay: comparison of in situ measurements and numerical analyses
O. Reul,Mark Randolph +1 more
TL;DR: In this paper, the authors present the results of detailed back-analysis, using three-dimensional finite-element analysis, of three piled raft foundations on overconsolidated clay.
Journal ArticleDOI
Numerical analysis of composite piled raft with cushion subjected to vertical load
TL;DR: Wang et al. as discussed by the authors extended the concept of piled raft to a new type of foundation named composite piled raft, where the short piles made of flexible materials were used to strengthen the shallow soft soil, while the long piles were made of relatively rigid materials to reduce the settlements and the cushion beneath the raft was used to redistribute and adjust the stress ratio of piles to subsoil.
References
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Book
Foundation analysis and design
TL;DR: In this paper, Fondation de soutenagement et al. presented a reference record for Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08.
Book
Pile Foundation Analysis and Design
Harry G. Poulos,E.H. Davis +1 more
TL;DR: In this paper, the authors present a consistent theoretical approach to the prediction of pile deformation and load capacity, and present parametric solutions for a wide range of cases, demonstrating how such solutions can be used for design purposes, and review the applicability of these approaches to practical problems.
Book
Elastic Analysis of Soil-Foundation Interaction
TL;DR: In this article, the Mecanique des sols Reference Record was created on 2004-09-07, modified on 2016-08-08, and used for Elasticite.