Laterally loaded piles in sand: slope effect on <i>P-Y</i> reaction curves

Mezazigh, Salim; Levacher, Daniel

doi:10.1139/t98-016

Cited by 118 publications

(28 citation statements)

References 1 publication

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“…It was found that the horizontal ultimate capacity of vertical pile decrease as the slope became steeper. Bouafia & Bouguerra (1995) and Mezazigh & Levacher (1998) performed centrifuge tests to study the responses of piles in/near a slope under lateral loads. The results showed that, for a pile at the crest of a 1 (V) : 2 (H) slope, the lateral capacity and the maximum bending moment are approximately 0.70 and 1.25 times those for the reference pile in Horizontal ground surface.…”

Section: Introductionmentioning

confidence: 99%

Undrained vertical bearing capacity of pile located near soft clay slope

et al. 2015

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AEWOI _« ÈuBI « ‰UL _« vK iOH « q «uF w UO r -qJ w qOK « ZzU ÷d ABSTRACTThe bearing capacity of shallow foundations on slopes is commonly calculated from proposed design charts or using empirical equations. This paper presents the results of numerical studies carried out on behavior of pile located near soft clay slopes under undrained vertical loading conditions. A series of three-dimensional numerical models was performed for various pile geometry, different distances of the pile and slope angle. The obtained results show that, as the pile embedded length increases, full formations of wedge failure occurs and, therefore, a greater axial capacity of the pile is mobilized. In addition, by decreasing the distance of the pile from the slope crest, the lateral movement of soils increases and the lack of soils on the slope side of the pile tend to reduce the bearing capacity. Furthermore, by increasing the slope angle, the pile lateral displacement increases and, therefore, the eccentricity of the axial load on the pile will produce more additional bending moments in the pile and thereby the axial capacity reduction increases. The results of the analysis are presented in chart form as reduction factors (RF) on horizontal ground ultimate loads.

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Section: Introductionmentioning

confidence: 99%

Undrained vertical bearing capacity of pile located near soft clay slope

et al. 2015

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“…The -method is based on the numerical solution of beam-on-elastic foundation, where the structural behavior of a drilled shaft is modeled as a beam and the soil-shaft interaction is represented by discrete, inelastic springs characterized by -curves [3,4]. However, two models cannot be extended to sloping ground since the spring constants for elastic or inelastic cases have not been clearly investigated.…”

Section: Introductionmentioning

confidence: 99%

“…The variation of passive resistance depending on ground slop is very significant for sloping ground. Recently, some developments towards the analysis of piles in sloping ground have been made either by experiments in laboratory [3,4] or by numerical analysis [5,6]. Results indicate that ground inclination significantly affects ultimate load of the -curves according to loading direction, angle of inclined pile and soil density, and so forth.…”

Section: Introductionmentioning

confidence: 99%

Vehicle Impact Analysis of Flexible Barriers Supported by Different Shaped Posts in Sloping Ground

Lee

Ahn

Woo

2014

Advances in Mechanical Engineering

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A roadside guardrail may be constructed near slopes. The desired safety behavior is ensured not only by the guardrail structure itself, but also by the interaction between soil and guardrail post. In the case of horizontal ground, the elastic Winkler spring model and the -curve approach can be used to estimate the soil-post interaction by the finite element method. However, it is difficult to apply those models with the sloping ground cases unless sufficient experimental data are given through the single post impact tests. This paper evaluates, using LS-DYNA software, the vehicle impact performance of flexible barriers made of steel W-Beam guardrails in sloping ground that are also supported over three different types of post configurations. The dynamic performance is tested in terms of maximum deflection, absorbing impact energy, and occupant risk index according to post types.

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“…However, some developments towards the analysis of piles in sloping ground have been made recently either by conducting experiments in laboratory (Mezazigh andLevacher 1998, Muthukkumaran et al 2004) or by performing numerical analysis, mainly based on available commercial software (Gabr andBorden 1990, Chae et al 2004). Several investigators have considered the equivalent problem of battered piles in horizontal ground.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis for laterally loaded piles in sloping ground

Sawant¹,

Shukla²

2012

Coupled Systems Mechanics

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Abstract. The available analytical methods of analysis for laterally loaded piles in level ground cannot be directly applied to such piles in sloping ground. With the commercially available software, the simulation of the appropriate field condition is a challenging task, and the results are subjective. Therefore, it becomes essential to understand the process of development of a user-framed numerical formulation, which may be used easily as per the specific site conditions without depending on other indirect methods of analysis as well as on the software. In the present study, a detailed three-dimensional finite element formulation is presented for the analysis of laterally loaded piles in sloping ground developing the 18 node triangular prism elements. An application of the numerical formulation has been illustrated for the pile located at the crest of the slope and for the pile located at some edge distance from the crest. The specific examples show that at any given depth, the displacement and bending moment increase with an increase in slope of the ground, whereas they decrease with increasing edge distance.

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Laterally loaded piles in sand: slope effect on P-Y reaction curves

Cited by 118 publications

References 1 publication

Undrained vertical bearing capacity of pile located near soft clay slope

Undrained vertical bearing capacity of pile located near soft clay slope

Vehicle Impact Analysis of Flexible Barriers Supported by Different Shaped Posts in Sloping Ground

Finite element analysis for laterally loaded piles in sloping ground

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