Parametric analysis of single pile response in laterally spreading ground

2012 ◽  
Vol 34 (1) ◽  
pp. 99-110 ◽  
Author(s):  
Alexandros I. Valsamis ◽  
George D. Bouckovalas ◽  
Yannis K. Chaloulos
Keyword(s):  
Parametric Analysis ◽  
Single Pile ◽  
Pile Response

scholarly journals Modelling and Assessment of a Single Pile Subjected to Lateral Load

2018 ◽  
Vol 40 (1) ◽  
pp. 65-78 ◽  
Author(s):  
Jasim M. Abbas ◽  
Zamri Chik ◽  
Mohd Raihan Taha
Keyword(s):  
Finite Element ◽  
Flexural Rigidity ◽  
Lateral Displacement ◽  
Slenderness Ratio ◽  
Lateral Load ◽  
Cohesionless Soil ◽  
Interface Element ◽  
Single Pile ◽  
Soil Resistance ◽  
Pile Response

Abstract A three-dimensional finite element technique was used to analyse single pile lateral response subjected to pure lateral load. The main objective of this study is to assess the influence of the pile slenderness ratio on the lateral behaviour of single pile. The lateral single pile response in this assessment considered both lateral pile displacement and lateral soil resistance. As a result, modified p-y curves for lateral single pile response were improved when taking into account the influence lateral load magnitudes, pile cross sectional shape and flexural rigidity of the pile. The finite element method includes linear elastic, Mohr-Coulomb and 16-nodes interface models to represent the pile behaviour, soil performance and interface element, respectively. It can be concluded that the lateral pile deformation and lateral soil resistance because of the lateral load are always influenced by lateral load intensity and soil type as well as a pile slenderness ratio (L/D). The pile under an intermediate and large amount of loading (in case of cohesionless soil) has more resistance (low lateral displacement) than the pile embedded on the cohesion soil. In addition, it can be observed that the square-shaped pile is able to resist the load by about 30% more than the circular pile. On the other hand, pile in cohesionless soil was less affected by the change in EI compared with that in cohesive soil.

3D numerical analysis of pile response due to soil movements induced by an adjacent deep excavation

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tamir Amari ◽  
Mohamed Nabil Houhou
Keyword(s):  
Numerical Analysis ◽  
Parametric Study ◽  
Pile Group ◽  
Small Strain ◽  
Nonlinear Behaviour ◽  
Single Pile ◽  
Deep Excavation ◽  
Braced Excavation ◽  
Content Type ◽  
Pile Response

Purpose This paper aims to investigate single pile and pile group responses due to deep braced excavation-induced soil movement in soft clay overlying dense sand. The analysis focuses first on the response of vertical single pile in terms of induced bending moment, lateral deflection, induced axial force, skin resistance distribution and pile settlement. To better understand the single pile behaviour, a parametric study was carried out. To provide further insights about the response of pile group system, different pile group configurations were considered. Design/methodology/approach Using the explicit finite element code PLAXIS 3 D, a full three-dimensional numerical analysis is carried out to investigate pile responses when performing an adjacent deep braced excavation. The numerical model was validated based on the results of a centrifuge test. The relevance of the 3 D model is also judged by comparison with the 2 D plane strain model using the PLAXIS 2 D code. Findings The results obtained allowed a thorough understanding of the pile response and the soil–pile–structure interactions phenomenon. The findings reveal that the deep excavation may cause appreciable bending moments, lateral deflections and axial forces in nearby piles. The parametric study showed that the pile responses are strongly influenced by the excavation depth, relative pile location, sand density, excavation support system and pile length. It also showed that the response of a pile within a group depends on its location in relation to the other piles of the pile group, its distance from the retaining wall and the number of piles in the group. Originality/value Unlike previous studies which investigated the problem in homogeneous geological context (sand or clay), in this paper, the pile response was thoroughly studied in a multi-layered soil using 3 D numerical simulation. To take into account the small-strain nonlinear behaviour of the soil, the Hardening soil model with small-strain stiffness was used in this analysis. For a preliminary design, this numerical study can serve as a practical basis for similar projects.

scholarly journals Lateral Performance for Long Pile Subjected to Simultaneous Axial and Lateral Loads in Dense Sand: An Experimental Study

2019 ◽  
Vol 12 (2) ◽  
pp. 110-114
Author(s):  
Jasim M. Abbas
Keyword(s):  
Experimental Study ◽  
Slenderness Ratio ◽  
The Other ◽  
Laboratory Model ◽  
Single Pile ◽  
Lateral Loads ◽  
Dense Sand ◽  
Other Hand ◽  
Pile Response

The present study focus on the investigation ofthe response of single pile when subjected to both axial and lateral loads simultaneously in dense sand. To study this issue, laboratory model was locally improved to examine the piles under this kind of loading. The dense sand provided using raining technique. The slenderness ratio of the tested pile is ( L/D=45). On the other hand, the vertical and horizontal loads are divided into 5 stages to assess the influence of load intensities on the lateral pile response. It can be concluded that the lateral pile response is affected by changing the load intensities

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