NUMERICAL ANALYSIS OF THE BEHAVIOUR OF A FLEXIBLE PILE FOUNDATION VERSUS A RIGID ONE UNDER LATERAL CYCLIC ACTION

2018 ◽  
Author(s):  
Loretta Batali
Keyword(s):  
Numerical Analysis ◽  
Pile Foundation ◽  
Cyclic Action ◽  
Flexible Pile

Tunneling influence zones for adjacent existing pile foundation in soft soil developed by numerical analysis

2013 ◽  
pp. 633-640
Author(s):  
P Jongpradist ◽  
A Sawatparnich ◽  
S Youwai ◽  
J Sunitsakul ◽  
W Kongkitkul ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Pile Foundation ◽  
Soft Soil

Numerical Analysis for Bearing Performance of Flexible Piles Composite Foundation Influenced by Modulus’ Changes

2011 ◽  
Vol 261-263 ◽  
pp. 1694-1698 ◽  
Author(s):  
Feng Yi Tan ◽  
Xin Zhi Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Frictional Resistance ◽  
Composite Foundation ◽  
Single Pile ◽  
The Finite Element Method ◽  
Modulus Ratio ◽  
The Common ◽  
Flexible Pile

The bearing performance of composite foundation improved by flexible piles was influenced by changes of cushion’s modulus, the modulus ratio between soil on bottom of pile and soil surrounded pile, which was analyzed by the finite element method. Results showed that: 1.For single pile, by increasing of cushion’s modulus, the bearing performance nearby the top of flexible pile increased apparently, and the common tendency of settlement of pile and soil surrounded piles was affected negatively. For multi-piles, the increasing of cushion’s modulus resulted in the increasing of bearing performance and the common tendency of settlement of piles and soil surrounded piles was affected positively. 2.The change of modulus ratio between soil surrounded piles and soil on bottom of piles resulted positively in the change of frictional resistance and end-bearing performance nearby the bottom of single pile and reduced the settlement of composite foundation. But the multi-pile borne absolutely all loading due to the increasing of modulus ratio, and both of piles and soil surrounded piles had the same tendency of settlement.

scholarly journals Effect of thermal boundary conditions on the response of thermally-activated floating piles in a cohesive material

2020 ◽  
Vol 195 ◽  
pp. 04013
Author(s):  
Peter Bourne-Webb ◽  
Martina Zito ◽  
Teresa Maria Bodas Freitas ◽  
Donatella Sterpi
Keyword(s):  
Numerical Analysis ◽  
Boundary Conditions ◽  
Pile Foundation ◽  
Initial Conditions ◽  
Small Scale ◽  
Surface Boundary ◽  
Thermally Activated ◽  
Thermal Boundary Conditions ◽  
Significant Attention ◽  
Cohesive Material

The application of thermally-activated foundations has received significant attention in the last decade with a number of large- and small-scale tests having been undertaken. Alongside these physical studies, a number of investigations utilising numerical analysis have been undertaken. The majority of analyses are transient with durations from a few hours up to 10 years. A broad range of thermal boundary and initial conditions have been applied in these analyses, and only a limited number of studies have explicitly considered the surface boundary imposed by an overlying structure, let alone considered what effect variations in the operational temperatures of the structure might have on the foundations. The work presented in this paper had the objective of systematically examining these assumptions and the effect they have on the predicted response of a thermally-activated pile foundation, and if important, which is the most appropriate set of conditions to use.

scholarly journals Numerical analysis of pile foundations in seasonally freezing soil ground

2021 ◽  
Vol 135 (2) ◽  
pp. 37-48
Author(s):  
G. Tleulenova ◽  
◽  
A. Zhussupbekov ◽  
Zh. Shakhmov ◽  
A. Omarov ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Caspian Sea ◽  
Pile Foundation ◽  
Precast Concrete ◽  
Interaction Mechanism ◽  
Pile Foundations ◽  
The Caspian Sea ◽  
Static Tests ◽  
Freezing Soil ◽  
Composite Joint

The article presents the results of numerical analysis for pile foundation in seasonally freezing soil ground. This project uses the static tests of soil by piles at the construction site of Cargo off-loading facilities (Prorva, Atyrau region, Kazakhstan). The project area is located along the east coast of the Caspian Sea, both onshore and offshore, near the Prorva oilfield, Kazakhstan. At present, the North Caspian Sea has a limited water depth (max 8 m). According to the test results have been made design changes in the pile foundation. Static tests (SCLT) were carried out on the piles with 16m in length and precast concrete joint pile foundations with a total length of 22m to 27m. This research is important for an understanding of the interaction mechanism of precast composite joint piles with seasonally freezing soil ground of the Caspian Sea coastal area of the site.

Pile foundation analysis and design using experimental data and 3-D numerical analysis

2009 ◽  
Vol 36 (5) ◽  
pp. 819-836 ◽  
Author(s):  
Emilios M. Comodromos ◽  
Mello C. Papadopoulou ◽  
Ioannis K. Rentzeperis
Keyword(s):  
Experimental Data ◽  
Numerical Analysis ◽  
Pile Foundation ◽  
Analysis And Design

scholarly journals JUSTIFICATION OF THE STRESS-STRAIN STATE OF THE PILE FOUNDATION USING SOFTWARE COMPLEXES

2021 ◽  
pp. 13-18
Author(s):  
O. I. DUBINCHYK ◽  
L. O. NEDUZHA
Keyword(s):  
Numerical Analysis ◽  
Pile Foundation ◽  
Strain State ◽  
Operating Conditions ◽  
Design Solution ◽  
Bridge Structure ◽  
Stress Strain ◽  
Stress Strain State ◽  
Software Packages ◽  
Pile Cap

Purpose. Bridge supports with a high pile caps require more attention when calculating their strength due to the difficult operating conditions of the piles. The purpose of the scientific article is to substantiate the stress-strain state of the pile foundation of the bridge structure using software computing systems SCAD and LIRA-CAD. Methodology. An analysis of software used to automate the design of foundations was conducted. The main parameters of SCAD and LIRA-CAD software packages are yielded. With their help, finite-element models of the pile foundation of the bridge support with a high pile cap were built. The developed models maximally reflect the properties of the soil base and foundation, its pile cap and piles, geometric characteristics and the influence of the finite elements meshing is considered. Calculations were performed in SCAD and LIRA-CAD software packages with monitoring of the calculation process. Findings. During the numerical analysis of the pile foundation of the bridge structure with a high pile cap, vertical displacements, force factors (normal forces and bending moments) in the piles and stresses in the body of the support and piles were determined. Based on these results, an analysis was performed, which is combined with a comparison of the obtained results. Implementation of SCAD and LIRA-CAD software allows to significantly reduce design time, to reduce project costs, to improve the quality and efficiency of investments. Originality. A comparison of the stress-strain state obtained during the numerical analysis of SCAD and LIRA-CAD software, which proved the difference in the approach to modeling in these complexes, was conducted. Practical value. The results of substantiation of the stress-strain state of the pile foundation with the use of software complexes made it possible to verify the design solution of all elements of the foundation of the bridge structure with a high pile cap.

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