A Simplified Finite-element Approach for the Analysis of Driven Piles PDF Download
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Author: Toufic Elias Smayra
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 180
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Book Description
The analysis of axially-loaded driven piles is examined in this study using a finite-element model. The three-dimensional model accounts for the nonlinear behavior of the soil undergoing large deformation. The simulation of the penetration of the pile in the soil in the course of driving has been attempted in a previous study; the computational cost was however found excessive, thus, limiting the study to the driving of piles that are already in place (prebored piles). In this research, the penetration of the pile is simulated by gradually expanding a cavity in the soil in the form of the pile, until the desired depth of penetration is reached. The pile is then placed in the cavity to reach equilibrium. The driving of the pile is then continued using a nonlinear time-domain dynamic analysis in which the hammer blows are simulated by a periodic forcing function. A comparison is made between the response of actually (computationally) driven piles and piles driven by the expansion simulation. The response of prebored piles will also be compared with driven piles. The evolution of the state of stress and deformation in the soil and the soil resistance against the pile will be traced at all stages of the analysis.
Author: Toufic Elias Smayra
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 180
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Book Description
The analysis of axially-loaded driven piles is examined in this study using a finite-element model. The three-dimensional model accounts for the nonlinear behavior of the soil undergoing large deformation. The simulation of the penetration of the pile in the soil in the course of driving has been attempted in a previous study; the computational cost was however found excessive, thus, limiting the study to the driving of piles that are already in place (prebored piles). In this research, the penetration of the pile is simulated by gradually expanding a cavity in the soil in the form of the pile, until the desired depth of penetration is reached. The pile is then placed in the cavity to reach equilibrium. The driving of the pile is then continued using a nonlinear time-domain dynamic analysis in which the hammer blows are simulated by a periodic forcing function. A comparison is made between the response of actually (computationally) driven piles and piles driven by the expansion simulation. The response of prebored piles will also be compared with driven piles. The evolution of the state of stress and deformation in the soil and the soil resistance against the pile will be traced at all stages of the analysis.
Author: Gordon Hanley Reigstad
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 358
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Book Description
Author: Rui Wang
Publisher: Springer
ISBN: 3662496631
Category : Science
Languages : en
Pages : 131
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Book Description
This thesis focuses on the seismic response of piles in liquefiable ground. It describes the design of a three-dimensional, unified plasticity model for large post-liquefaction shear deformation of sand, formulated and implemented for parallel computing. It also presents a three-dimensional, dynamic finite element analysis method for piles in liquefiable ground, developed on the basis of this model,. Employing a combination of case analysis, centrifuge shaking table experiments and numerical simulations using the proposed methods, it demonstrates the seismic response patterns of single piles in liquefiable ground. These include basic force-resistance mode, kinematic and inertial interaction coupling mechanism and major influence factors. It also discusses a beam on the nonlinear Winkler foundation (BNWF) solution and a modified neutral plane solution developed and validated using centrifuge experiments for piles in consolidating and reconsolidating ground. Lastly, it studies axial pile force and settlement during post-earthquake reconsolidation, showing pile axial force to be irrelevant in the reconsolidation process, while settlement is process dependent.
Author: Helme Abdulrahman Al-Khatib
Publisher:
ISBN:
Category : Piling (Civil engineering)
Languages : en
Pages : 176
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Book Description
A quasi-three-dimensional finite element method of analysis is proposed for the dynamic response analysis of pile foundations that is computationally feasible for practical applications. The method uses a simplified three-dimensional wave equation for describing the dynamic response of the soil. The response of the pile foundation is computed directly without having to use pile-soil-pile interaction factors. The quasi-three-dimensional solution greatly reduces the computational time for the direct analysis of pile groups. The method is presented here for an elastic response so that itcan be validated against existing more exact elastic solutions and low-amplitude field vibration tests. The method is extended to nonlinear dynamicresponse analysis in an accompanying paper.
Author: Babu T. Jose
Publisher: Springer Nature
ISBN: 981971737X
Category :
Languages : en
Pages : 441
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Book Description
Author: David Lee Running
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 246
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Book Description
Author: Amir M. Kaynia
Publisher: CRC Press
ISBN: 1000398560
Category : Technology & Engineering
Languages : en
Pages : 366
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Book Description
This book presents computational tools and design principles for piles used in a wide range of applications and for different loading conditions. The chapters provide a mixture of basic engineering solutions and latest research findings in a balanced manner. The chapters are written by world-renowned experts in the field. The materials are presented in a unified manner based on both simplified and rigorous numerical methods. The first four chapters present the basic elements and steps in analysis of piles under static and cyclic loading together with clear references to the appropriate design regulations in Eurocode 7 when relevant. The analysis techniques cover conventional code-based methods, solutions based on pile-soil interaction springs, and advanced 3D finite element methods. The applications range from conventional piles to large circular steel piles used as anchors or monopiles in offshore applications. Chapters 5 to 10 are devoted to dynamic and earthquake analyses and design. These chapters cover a range of solutions from dynamic pile-soil springs to elasto-dynamic solutions of large pile groups. Both linear and nonlinear soil behaviours are considered along with response due to dynamic loads and earthquake shaking including possible liquefaction. The book is unique in its unified treatment of the solutions used for static and dynamic analysis of piles with practical examples of application. The book is considered a valuable tool for practicing engineers, graduate students and researchers.
Author: Shengli Chen
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 146
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Book Description
Author: Ronald C. Chaney
Publisher: ASTM International
ISBN: 0803104901
Category : Carbonates
Languages : en
Pages : 378
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Book Description
