Finite element vertical slices model: Validation and application to an embedded square footing under combined loading

Bouzid, Dj. Amar; Vermeer, P. A.; Tiliouine, Boualem

doi:10.1016/j.compgeo.2005.01.001

“…Bouzid, et al (2005) [9] presented a new approximate method called the Vertical Slices Model (VSM) based on a combination of 2D finite element and finite difference methods. The method was used to predict the behavior of an embedded square footing under combined loading in a non-homogeneous half-space where the stiffness profile was modeled as a power-low of depth.…”

Section: Fig 1 Shallow Foundation Subjecte To Eccentric-inclined Loadmentioning

confidence: 99%

Pressure - Settlement Characteristics of Shallow Foundations using Finite Element Method

Zedan

¹

,

Maulood

²

2017

Tikrit j. eng. sci.

2

0

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The present study attempts to represent the behavior of shallow foundations under the effect of eccentric inclined loading in terms of the main criteria of design which are the ultimate bearing capacity, permissible settlement, horizontal displacement and tilt. Due to the square shape of the analysed foundations, three dimensional finite element analysis are used. Elastic-perfectly plastic behavior of soil and rigid of foundations was adopted using Mohr-Coulomb criterion, 15-Node wedge elements were used to model and represent the soil and 5-Node linear elements with three degree of freedom to model and represent the foundations in used program PLAXIS 3D TUNNEL version 1.2.The results of analysis were presented in the form of pressuresettlement, pressure-horizontal displacement and pressure-tilt characteristics. Then the ultimate bearing capacity of the foundations were gotten and compared with (Meyerhof, 1956) and (Saran & Agrawal, 1991), a good agreement was found between them. Using the data obtained from the analysis, non-dimensional correlations have been developed for predicting the values of settlement, horizontal displacement and tilt of eccentrically-obliquely loaded foundations. These relationships can be used by the engineers.

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“…The procedure involves the combination of the finite element (FE) method and the finite difference (FD) method for analysing the vertical pile and the surrounding soil sub-structured into vertical panels. The theory on which the present approach is based has been presented elsewhere by Amar Bouzid et al (2005aBouzid et al ( , 2005b for elastic problems involving other structures interacting with soil. Hence, the elastic version of the pseudo-3D model is not detailed herein; only a brief description is presented.…”

Section: Introductionmentioning

confidence: 99%

Response prediction of horizontally loaded single piles using a pseudo 3-D nonlinear FE procedure

Bouzid

¹

,

Vermeer

²

2009

Geomechanics and Geoengineering

1

0

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In this paper, a nonlinear continuum method is developed to predict the load-displacement response of single piles under lateral loading. This pseudo-3D numerical procedure called the nonlinear vertical slices model (NVSM) consists of subdividing the pile/soil continuum into vertical interacting slices, each being dealt with as pseudo-plane stress problem. The technique takes advantage of finite element 2D numerical solutions in plane stress for building approximate 3D solutions. First, the linear FE VS model is briefly outlined and then the yield criterion selected for nonlinear analysis is introduced. The nonlinear computational strategy and the different calculation steps are also given in detail. Based on the theory of the NVSM, a computer code called Pile3D-NVSM for laterally loaded piles is presented. The computational advantage of the approach is illustrated, by the validation of the code through pile problems involving nonlinear soil behaviour. The reasonable agreement that has been found between the NVSM results and those of the full 3D FE method demonstrates the ability of the nonlinear vertical slices model to predict accurate lateral pile deflections.

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“…Bouzid, et al (2005)[9] presented a new approximate method called the Vertical Slices Model (VSM) based on a combination of 2D finite element and finite difference methods. The method was used to predict the behavior of an embedded square footing under combined loading in a non-homogeneous half-space where the stiffness profile was modeled as a power-low of depth.…”

Section: Fig 1 Shallow Foundation Subjecte To Eccentric-inclined Loadmentioning

confidence: 99%

Pressure - Settlement Characteristics of Shallow Foundations using Finite Element Method

Zedan¹,

Maulood²

2017

Tikrit j. eng. sci.

View full text Add to dashboard Cite

The present study attempts to represent the behavior of shallow foundations under the effect of eccentric inclined loading in terms of the main criteria of design which are the ultimate bearing capacity, permissible settlement, horizontal displacement and tilt. Due to the square shape of the analysed foundations, three dimensional finite element analysis are used. Elastic-perfectly plastic behavior of soil and rigid of foundations was adopted using Mohr-Coulomb criterion, 15-Node wedge elements were used to model and represent the soil and 5-Node linear elements with three degree of freedom to model and represent the foundations in used program PLAXIS 3D TUNNEL version 1.2.The results of analysis were presented in the form of pressuresettlement, pressure-horizontal displacement and pressure-tilt characteristics. Then the ultimate bearing capacity of the foundations were gotten and compared with (Meyerhof, 1956) and (Saran & Agrawal, 1991), a good agreement was found between them. Using the data obtained from the analysis, non-dimensional correlations have been developed for predicting the values of settlement, horizontal displacement and tilt of eccentrically-obliquely loaded foundations. These relationships can be used by the engineers.

show abstract

Finite element vertical slices model: Validation and application to an embedded square footing under combined loading

Cited by 7 publications

References 13 publications

Pressure - Settlement Characteristics of Shallow Foundations using Finite Element Method

Pressure - Settlement Characteristics of Shallow Foundations using Finite Element Method

Response prediction of horizontally loaded single piles using a pseudo 3-D nonlinear FE procedure

Pressure - Settlement Characteristics of Shallow Foundations using Finite Element Method

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