...Chuanjin Tang; Andrea Franza; Jingmin Xu; Alec M. Marshall This paper presents results from geotechnical centrifuge tests of tunnelling in dry dense sand beneath loaded non-displacement piles, focusing on the effect of a pile cap (representative also of a raft or grade beam) in contact...

...Rui Zhao; Anthony Kwan Leung; Jonathan Adam Knappett Thermally induced ratcheting of a thermo-active pile is the accumulation of net and irreversible pile head displacement upon heating–cooling cycles. Although this kind of phenomenon has been observed in vertically loaded piles in sand...

... the behaviour of thermally activated piles and to highlight the potential limitations of some analytical methods that are being applied to their study and design. Working on the premise that some soils, specifically moderately to highly over-consolidated clays, may experience thermally induced volume changes...

...Z. Abchir; S. Burlon; R. Frank; J. Habert; S. Legrand Pile design is not only based on the assessment of bearing capacity, but can involve settlement calculations when the structures supported by piles need high service requirements. In this context, the load transfer approach with t–z...

...A. M. A. Nasr; S. V. Krishna Rao Soil contamination with oil is not only harmful for the environment, but is also detrimental to associated buildings and foundations. Thus, the main aim of this study is to discover the influence of oil-contaminated sand on the lateral behaviour of pile groups...

...S. Rimoy; M. Silva; R. Jardine; Z. X. Yang; B. T. Zhu; C. H. C. Tsuha The axial capacities of piles driven in silica sands are known to grow over the months that follow installation, long after all driving-induced pore pressures have dissipated. However, there is uncertainty over the processes...

...E. Bilotta; L.De Sanctis; R. Di Laora; A. D'Onofrio; F. Silvestri A tall public building in Naples (Italy) has recently undergone a seismic vulnerability assessment, following the new Italian code requirements. The building is about 100 m high and is founded on a piled raft floating in a thick...

...R. Salgado; D. Loukidis; G. Abou-Jaoude; Y. Zhang Drivability studies and determination of pile static capacity from driving resistance are an integral part of present foundation engineering practice. The success of both pile driving simulations and back-calculation of static resistance from pile...

...C.W.W. NG; Y. HONG; M.A. SOOMRO The effects of tunnel construction on existing single piles have been extensively investigated, but the influence of twin tunnel advancement on an existing pile group is seldom reported in the literature. In this study, a series of three-dimensional (3D) centrifuge...

... of jetted conductors as piles and anchors may be an economic solution for offshore developments. The long-term axial capacity of jetted conductors was investigated through a series of centrifuge modelling and laboratory thixotropy testing. The centrifuge tests simulated jetting installation of four model...

...F. NAGHIBI; G.A. FENTON; D.V. GRIFFITHS Although the settlement of deep foundations (piles) is not generally a concern if the piles are driven to refusal, settlement can become a design issue if no stiff substratum is encountered. This paper investigates the reliability-based design factors...

... Thomas Telford Ltd 2014 model tests particle crushing/crushability piles sands soil/structure interaction The cone penetration test (CPT) has become a key tool in site characterisation, partly owing to its simplicity, and partly as a result of the development of cone resistance-based...

...S. BURLON; R. FRANK; F. BAGUELIN; J. HABERT; S. LEGRAND This paper focuses on the establishment of a model factor for the calculation of the ultimate limit state (ULS) bearing capacity of piles in compression from Ménard pressuremeter tests results. First, the requirements of Eurocode 7...

...S. BANERJEE; S.H. GOH; F.H. LEE This paper examines seismic effects on fixed-head, end-bearing piles installed through soft clay, using centrifuge and numerical modelling. The numerical analyses were conducted using a non-linear hysteretic, stiffness-degrading model for the clay and were validated...

...J.K. LIM; B.M. LEHANE This paper describes a new approach to represent the effects of time on the shaft friction of displacement piles in sand. The proposal is based on the findings from pile test programmes performed at a test bed site in Western Australia in addition to data from well-documented...

...S. MURARO; A. MADASCHI; A. GAJO The use of passive piles can be an effective method for stabilising unstable slopes. Unfortunately, no rigorous analytical solution has so far been proposed for assessing the ultimate, lateral pile–soil pressure distribution under drained conditions for the design...

...S.K. SURYASENTANA; B.M. LEHANE The formulations for the lateral load–displacement (p–y) springs conventionally used for the analysis of laterally loaded piles have been based largely on the back-analysis of the performance of small-scale instrumented piles subjected to lateral load...

...M. SHADLOU; S. BHATTACHARYA A set of formulas for the dynamic stiffness of a pile (spring and dashpot coefficients) to use in inertial interaction analysis is proposed, utilising elastodynamic solutions. The method is based on solving a Lagrangian system of coupled equations for the pile...

...C. LAM; S.A. JEFFERIS; C.M. MARTIN Support fluids are widely used for the construction of deep bored piles and diaphragm walls. Specifications for the use of these fluids vary, and a thorough understanding of their effect on pile shaft resistance has not yet been developed. This paper presents...

... with the rigid bridge decks, it is shown that relatively small kinematic demands from the laterally spreading backfill soil are needed to initiate pile yielding, and that this mode of deformation should be taken into account in the design of the abutments and abutment piles. The Fitzgerald Avenue twin bridges...