Interaction Factors for the Analysis of Pile Groups in Layered Soils

Cairo, Roberto; Conte, Enrico; Dente, Giovanni

doi:10.1061/(asce)1090-0241(2005)131:4(525)

Cited by 16 publications

(10 citation statements)

References 11 publications

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“…Pile groups with the pile cap connecting each pile head are commonly used in engineering practice to support the superstructures of heavy machineries, bridges, and buildings. In the past decades, many researches focus their efforts on the dynamic analysis of pile groups in single-phase elastic media [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] or saturated poroelastic media [21][22][23][24][25][26], whereas the pile caps were not in contact with the soil. This means the effect of pile caps on the responses of pile groups are neglected.…”

Section: Introductionmentioning

confidence: 99%

Vertical harmonic vibration of piled raft foundations in layered soils

Liu

2017

Num Anal Meth Geomechanics

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Summary This paper develops a method to analyze the piled raft foundation under vertical harmonic load. This method takes into account the interactions among the piles, soil, and raft. The responses of the piles and raft are formulated as a series of equations in a suitable way and that of layered soils is simulated with the use of the analytical layer‐element method. Then, according to the equilibrium and continuity conditions at the piles–soil–raft interface, solutions for the piled raft systems are obtained and further demonstrated to be correct through comparing with the existing results. Finally, some examples are given to investigate the influence of the raft, pile length‐diameter ratio, and layering on the response of the piled raft foundations. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Vertical harmonic vibration of piled raft foundations in layered soils

Liu

2017

Num Anal Meth Geomechanics

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“…Studies on dynamic soil-pile interaction have been carried out over the years, mostly by means of numerical approaches such as the finite-element [1][2][3][4][5][6][7] and the boundary-element method [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

1-g Experimental investigation of bi-layer soil response and kinematic pile bending

Chidichimo

Cairo

Dente

et al. 2014

Soil Dynamics and Earthquake Engineering

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a b s t r a c tThe effect of soil inhomogeneity and material nonlinearity on kinematic soil-pile interaction and ensuing bending under the passage of vertically propagating seismic shear waves in layered soil, is investigated by means of 1-g shaking table tests and nonlinear numerical simulations. To this end, a suite of scale model tests on a group of five piles embedded in two-layers of sand in a laminar container at the shaking table facility in BLADE Laboratory at University of Bristol, are reported. Results from white noise and sine dwell tests were obtained and interpreted by means of one-dimensional lumped parameter models, suitable for inhomogeneous soil, encompassing material nonlinearity. A frequency range from 0.1 Hz to 100 Hz and 5 Hz to 35 Hz for white noise and sine dwell tests, respectively, and an input acceleration range from 0.015 g to 0.1 g, were employed. The paper elucidates that soil nonlinearity and inhomogeneity strongly affect both site response and kinematic pile bending, so that accurate nonlinear analyses are often necessary to predict the dynamic response of pile foundations.

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“…The pile is embedded in a two-layer soil deposit resting on a stiffer bedrock. The results calculated in this study are compared to those obtained using the boundary element approach developed by Cairo and Dente [6]. The shear wave velocity of the rock is 1200 m/s.…”

Section: Case Studies and Resultsmentioning

confidence: 96%

“…From a computational point of view, a more efficient procedure is represented by the boundary element method [6][7][8]. It needs far less discretization and the condition of wave propagation towards infinity is automatically satisfied.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Seismic Response Of Single Piles

Cairo¹,

Conte²,

Dente³

2008

AIP Conference Proceedings

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In this paper, a method is proposed to analyse the seismic response of single piles under nonlinear soil condition. It is based on the Winkler foundation model formulated in the time domain, which makes use of p-y curves described by the Ramberg-Osgood relationship. The analyses are performed referring to a pile embedded in two-layer soil profiles with different sharp stiffness contrast. Italian seismic records are used as input motion. The calculated bending moments in the pile are compared to those obtained using other theoretical solutions.

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Interaction Factors for the Analysis of Pile Groups in Layered Soils

Cited by 16 publications

References 11 publications

Vertical harmonic vibration of piled raft foundations in layered soils

Vertical harmonic vibration of piled raft foundations in layered soils

1-g Experimental investigation of bi-layer soil response and kinematic pile bending

Nonlinear Seismic Response Of Single Piles

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