Numerical Study of the Bearing Behavior of Piled Rafts

Reul, Oliver

doi:10.1061/(asce)1532-3641(2004)4:2(59)

Cited by 76 publications

(20 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is also significant that the predictions of E/E 0 at the soil-receiver pile interface match very well with those of Approach I, while Approach II produces lower E/E 0 values. It can also be seen that the soil modulus between piles in the direct analyses exceeds the far-field value; this can be attributed to the increased mean effective stress (p') between piles, similar to that documented by Reul (2004) for a free-standing pile group. As mentioned, however, it is the conditions at the pile interface that are of interest in this study.…”

Section: Influence Of Pile Cap Conditionssupporting

confidence: 63%

Pile Group Settlement Estimation: Suitability of Nonlinear Interaction Factors

McCabe

Sheil

2015

Int. J. Geomech.

View full text Add to dashboard Cite

Publication InformationMcCabe, B.A., Sheil, B.B. (2015) 'Pile group settlement estimation: suitability of nonlinear interaction factors'. ASCE International Journal of Geomechanics, 13 (3). PublisherAmerican Society of Civil Engineers AbstractIn this paper, predictions of pile settlement determined by appropriate superposition of two-pile interaction factors are compared with those computed from continuum analysis. PLAXIS 3DFoundation is used in conjunction with the non-linear Hardening Soil model and pile group sizes studied are greater than in previous research. The study is presented in two phases: (i) examination of the modulus variation within the group allowed the elimination of some variables and (ii) a comparison of pile settlement predictions in the context of the significant variables. The research shows that predictions using the former approach match the continuum analyses very closely for friction piles and reasonably well for end-bearing piles and show potential for reducing computational time and effort in such problems. The paper also distinguishes between alternative definitions of interaction factor and shows that most accurate predictions arise from interaction factors calculated when only one of the two piles is loaded.

show abstract

Section: Influence Of Pile Cap Conditionssupporting

confidence: 63%

Pile Group Settlement Estimation: Suitability of Nonlinear Interaction Factors

McCabe

Sheil

2015

Int. J. Geomech.

View full text Add to dashboard Cite

show abstract

“…In this interaction, shear modulus plays an important role rather than Young's modulus. Second, the pile-pile interaction is simply dependent on the pile spacing, number, and length [3] that may affect the efficiency of bearing capacity of piles. Third, the raft-soil interaction reveals the bearing capacity considering net contact between raft and soil that is usually satisfactory in safety.…”

Section: Soil-structure Interactionsmentioning

confidence: 99%

“…It is obvious that load taken by the raft may reduce due to the presence of piles as ground stiffener. Reul [3] has conducted some numerical studies on un-piled raft (R), free-standing pile group (FPG), and piled raft (PR) foundations to see the phenomena of load sharing. In addition, free-standing pile group (FGP) is a type of foundations without considering any of bearing portion of raft (or cap).…”

Section: Bearing Resistantmentioning

confidence: 99%

“…In addition, free-standing pile group (FGP) is a type of foundations without considering any of bearing portion of raft (or cap). In case of piled raft foundation (RP), Reul showed that, the more the number of pile installed, the bigger the load portion taken by the group of pile [3]. Figures 1 and 2 show a numerical study of progress of load sharing of a piled raft foundation (Ep = 30000 MPa, νp = 0.15, Er = 25743 MPa, νr = 0.15, and pile group is configured symmetrically from the center of the raft) by using 2D plain strain FEM analysis.…”

Section: Bearing Resistantmentioning

confidence: 99%

“…For a given piled raft, settlement cannot be smaller than a certain value, depending on the pile configuration and the load level [3].…”

Section: Settlement Behavior Of Piled Raftmentioning

confidence: 99%

See 2 more Smart Citations

Settlement of Thick Clay Deposits under Piled-Raft Foundation and Design Considerations (Pile Dimensions)

Yeol

2015

ced

View full text Add to dashboard Cite

Characteristics and histories of the deltaic deposits in geotechnical perspective are studied. Geotechnical issues of clay deposits under floating foundation systems also analyzed. Theoretical expressions and parameters were examined by an experimental study and numerical analysis on the laboratory scales and field measurement in this study. Also, piled raft foundation on thick clay deposits is designated to optimize pile configuration. The predictions of settlements of piled rafts foundation are proposed based on pile dimensions by utilizing a normalized Ap/nL and Bg/Br. Practical design of piled raft foundations is made for the light bridges and five story buildings on thick clay deposits to discuss the long-term settlement, and it is found that the piled raft is well applicable and effective on thick clay deposits, and that differential settlements of the foundation should be managed by designing the configuration of pile lengths and spacing.

show abstract

Bauen im Bestand unter Berücksichtigung des zeitabhängigen Tragverhaltens von Gründungen

Reul,

Ganal,

Kissel

et al. 2024

Bautechnik

View full text Add to dashboard Cite

Im Zusammenhang mit der Modernisierung und Revitalisierung von Bestandsbauwerken sind zunehmend komplexe Aufgabenstellungen wie z. B. die Wiedernutzung von vorhandenen Gründungskörpern zu bearbeiten. In der Vergangenheit wurden bspw. in Frankfurt am Main verschiedene Vorhaben realisiert, bei denen Bestandsbauwerke nach Teilabbruch kraftschlüssig mit einem Neubau verbunden wurden. In einem Forschungsvorhaben wurden umfangreiche Untersuchungen zum Langzeitverformungsverhalten von Gründungen unter Wechselbeanspruchungen, wie sie u. a. bei teilweisem Abbruch und Wiederaufbau auftreten, durchgeführt. In diesem Zusammenhang wurde u. a. auf über mehrere Jahrzehnte reichende Messungen an Hochhausgründungen in Frankfurt am Main zurückgegriffen und das zeitabhängige Materialverhalten der überkonsolidierten tertiären Frankfurter Tone in einem umfassenden Laborprogramm untersucht sowie numerische Studien durchgeführt. Mit einer numerischen Parameterstudie wurden u. a. die Auswirkungen von Wechselbeanspruchungen, Konsolidation und Kriechen auf die Lastverteilung zwischen Pfählen und Fundamentplatte von Kombinierten Pfahl‐Plattengründungen (KPP) sowie auf die in der Ingenieurpraxis gebräuchlichen Bemessungskennwerte, nämlich Pfahlfedersteifigkeit und Bettungsmodul, untersucht. In diesem Beitrag werden zum einen im Rahmen der Parameterstudie gewonnene Erkenntnisse zusammengefasst und zum anderen die Projekte Park Tower und Leo in Frankfurt am Main vorgestellt.

show abstract

Numerical Study of the Bearing Behavior of Piled Rafts

Cited by 76 publications

References 5 publications

Pile Group Settlement Estimation: Suitability of Nonlinear Interaction Factors

Pile Group Settlement Estimation: Suitability of Nonlinear Interaction Factors

Settlement of Thick Clay Deposits under Piled-Raft Foundation and Design Considerations (Pile Dimensions)

Bauen im Bestand unter Berücksichtigung des zeitabhängigen Tragverhaltens von Gründungen

Contact Info

Product

Resources

About