Experimental and Numerical Analysis of Laterally Loaded Pile Subjected to Earthquake Loading

2020 ◽  
pp. 291-303
Author(s):  
Rusul Salman Hussein ◽  
Bushra Suhil Albusoda
Keyword(s):  
Numerical Analysis ◽  
Earthquake Loading ◽  
Laterally Loaded Pile ◽  
Laterally Loaded

scholarly journals Evaluation of p-y Curves and p-multiplier of Pile Groups Corresponding to Sand Properties Change Based on 3D Numerical Analysis

2020 ◽  
Vol 20 (4) ◽  
pp. 207-217
Author(s):  
Yongjin Choi ◽  
Jaehun Ahn
Keyword(s):  
Numerical Analysis ◽  
Soil Properties ◽  
Pile Group ◽  
Friction Angle ◽  
Dominant Factor ◽  
Group Effect ◽  
Pile Groups ◽  
Dense Sand ◽  
Laterally Loaded Pile ◽  
Laterally Loaded

The <i>p-y</i> curve method and </i>p</i>-multiplier (<i>P<sub>m</sub></i>), which implies a group effect, are widely used to analyze the nonlinear behaviors of laterally loaded pile groups. Factors affecting <i>P<sub>m</sub></i> includes soil properties as well as group pile geometry and configuration. However, research on the change in <i>P<sub>m</sub></i> corresponding to soil properties has not been conducted well. In this study, in order to evaluate the effect of soil properties on the group effect in a laterally-loaded pile group installed in sandy soil, numerical analysis for a single pile and 3×3 pile group installed in loose, medium, and dense sand, was performed using the 3D numerical analysis program, Plaxis 3D. Among the factors considered in this study, the column location of the pile was the most dominant factor for <i>P<sub>m</sub></i>. The effect of the sand property change on <i>P<sub>m</sub></i> was not as significant as that of the column location of the pile. However, as the sand became denser and the friction angle increased, the group effect increased, leading to a decrease in <i>P<sub>m</sub></i> of approximately 0.1. This trend was similar to the result reported in a previous laboratory-scale experimental study.

Response of piles and casings to horizontal free-field soil displacements

1984 ◽  
Vol 21 (4) ◽  
pp. 720-725 ◽  
Author(s):  
Peter M. Byrne ◽  
Donald L. Anderson ◽  
Walter Janzen
Keyword(s):  
Rigid Body ◽  
Free Field ◽  
Earthquake Loading ◽  
Field Soil ◽  
Simple Method ◽  
Laterally Loaded Pile ◽  
Laterally Loaded

A simple method of analysis for predicting the response of piles and casings to horizontal free-field soil displacements is presented. Such free-field displacements can be induced in the soil by ice or earthquake loading and can damage piles or casings within the soil. The method involves a modification to the conventional laterally loaded pile problem to account for the load induced by the free-field deflections.The method is applied to analyze the response of a casing within a caisson-retained island subject to high ice loading. The results indicate that flexible casings essentially track with the soil and are subjected to low forces and moments, whereas stiff casings deflect as a rigid body and attract high forces and moments.

scholarly journals Development of Simulation Based p-Multipliers for Laterally Loaded Pile Groups in Granular Soil Using 3D Nonlinear Finite Element Model

2020 ◽  
Vol 11 (1) ◽  
pp. 26
Author(s):  
Muhammad Bilal Adeel ◽  
Muhammad Asad Jan ◽  
Muhammad Aaqib ◽  
Duhee Park
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Design Guidelines ◽  
American Petroleum Institute ◽  
Winkler Foundation ◽  
Group Effect ◽  
Pile Groups ◽  
Element Analysis ◽  
Laterally Loaded Pile ◽  
Laterally Loaded

The behavior of laterally loaded pile groups is usually accessed by beam-on-nonlinear-Winkler-foundation (BNWF) approach employing various forms of empirically derived p-y curves and p-multipliers. Averaged p-multiplier for a particular pile group is termed as the group effect parameter. In practice, the p-y curve presented by the American Petroleum Institute (API) is most often utilized for piles in granular soils, although its shortcomings are recognized. In this study, we performed 3D finite element analysis to develop p-multipliers and group effect parameters for 3 × 3 to 5 × 5 vertically squared pile groups. The effect of the ratio of spacing to pile diameter (S/D), number of group piles, varying friction angle (φ), and pile fixity conditions on p-multipliers and group effect parameters are evaluated and quantified. Based on the simulation outcomes, a new functional form to calculate p-multipliers is proposed for pile groups. Extensive comparisons with the experimental measurements reveal that the calculated p-multipliers and group effect parameters are within the recorded range. Comparisons with two design guidelines which do not account for the pile fixity condition demonstrate that they overestimate the p-multipliers for fixed-head condition.

Estimation of P-multipliers for laterally loaded pile groups in clay and sand

2018 ◽  
Vol 14 (3) ◽  
pp. 229-237 ◽  
Author(s):  
Amir Talebi ◽  
Ali Derakhshani
Keyword(s):  
Pile Groups ◽  
Laterally Loaded Pile ◽  
Laterally Loaded

Limiting pressure on a laterally loaded pile in a frictional soil

2012 ◽  
Vol 2 (2) ◽  
pp. 55-60 ◽  
Author(s):  
D. Pan ◽  
J. A. Smethurst ◽  
W. Powrie
Keyword(s):  
Laterally Loaded Pile ◽  
Laterally Loaded ◽  
Limiting Pressure
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