Finite element modelling of undrained vertical bearing capacity of piles adjacent to different types of clayey slopes

2016 ◽  
Vol 12 (2) ◽  
pp. 147-154 ◽  
Author(s):  
Mehrab Jesmani ◽  
Ali Kasrania ◽  
Mehrad Kamalzare
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Finite Element Modelling ◽  
Element Modelling ◽  
Different Types ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity

Initial imperfections and the initiation of wrinkling in finite element modelling of deep drawing

2000 ◽  
Vol 214 (1) ◽  
pp. 63-73 ◽  
Author(s):  
J Hematian ◽  
P M Wild
Keyword(s):  
Finite Element ◽  
Deep Drawing ◽  
Finite Element Modelling ◽  
Annular Plate ◽  
Finite Element Models ◽  
Essential Requirement ◽  
Element Modelling ◽  
Initial Imperfections ◽  
Different Types ◽  
Out Of Plane

The effect of initial imperfections on the initiation of wrinkling in finite element models of deep drawing operations is assessed. Models of an annular plate are subjected to radial in-plane loading and the effects of different types, magnitudes and distributions of imperfections are investigated. A model of a circular plate subjected to out-of-plane loading from a punch and die is similarly investigated and the results are compared with experimental data. It is confirmed that initial imperfections are an essential requirement for the initiation of wrinkling for the case of in-plane loading. Initial imperfections are shown to be unimportant in the initiation of wrinkling for the case of out-of-plane loading.

scholarly journals Equations Used to Calculate Vertical Bearing Capacity of Driven Piles with Shaft Broadenings

2020 ◽  
Author(s):  
Yerlan Atenov ◽  
Isabai Bekbasarov
Keyword(s):  
Bearing Capacity ◽  
Experimental Studies ◽  
Soil Behavior ◽  
Driven Piles ◽  
Concrete Piles ◽  
Liquidity Index ◽  
Different Types ◽  
Reinforced Concrete Piles ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity

In a pile foundation setting practice driven piles with an unconventional (variable) longitudinal shape of surface are widely used. Such piles are made with various slopes of the side faces, may have different types of broadenings, thickenings, etc. The effectiveness of such piles is due to their design features, allowing full use of the natural bearing capacity of the soil base without additional reinforcement. The obvious advantages of these piles make it relevant to study the features of their interaction with the soil stratum, especially the bearing capacity of piles. This study was aimed to investigate vertical bearing capacity of driven reinforced concrete piles with several broadening of the shaft. Numerical calculations and experimental studies of the bearing capacity of piles with broadening under the static loading have been carried out. Equations for calculating the bearing capacity of piles with broadenings are proposed and their verification is performed. The equations include a coefficient that takes into account the features of soil behavior underneath of the pile broadening during palification. Correlation dependence is presented which makes it possible to determine the values of that coefficient depending on the number of pile broadening and the liquidity index of soil. A correlation that makes allow calculations the bearing capacity of piles with broadening via the bearing capacity of a prismatic pile is proposed. The equations are recommended to be used at the stage of variant design of piles with broadening as part of the pile foundations of buildings and structures.

scholarly journals BEARING CAPACITY OF AXIALLY LOADED TIMBER MEMBERS – ESTIMATION UNDER UNEVEN FIRE ACTION / MEDINIŲ CENTRIŠKAI GNIUŽDOMŲ ELEMENTŲ, NETOLYGIAI VEIKIAMŲ UGNIES LAIKOMOSIOS GALIOS, SKAIČIAVIMAS

2011 ◽  
Vol 17 (4) ◽  
pp. 581-589 ◽  
Author(s):  
Gintas Šauciuvnas ◽  
Antanas Šapalas ◽  
Mečislovas Griškevicius
Keyword(s):  
Finite Element ◽  
Elevated Temperature ◽  
Bearing Capacity ◽  
Finite Element Modelling ◽  
Laboratory Tests ◽  
Temperature Fields ◽  
Experimental Investigations ◽  
Element Modelling ◽  
Axially Loaded

The article deals with the peculiarities of calculating bearing capacity for axially loaded timber members under uneven fire action. According to LST EN 1995-1-2 and finite element modelling for determining temperature fields and variations in timber strength under elevated temperature, the method of simple calculations was applied. Calculations are based on the data and results of experimental investigations into the resistance of axially loaded members to fire. Data on variations in timber strength were obtained conducting laboratory tests using the specimens of Lithuanian pine under elevated temperature. Santrauka Atliekant šį tyrimą išnagrinėti netolygiai gaisro veikiamų neapsaugotų liaunų medinių centriškai gniuždomų elementų laikomosios galios skaičiavimo ypatumai, taikant paprastuosius skaičiavimo metodus, pateiktus LST EN 1995-1-2, ir naudojant baigtinių elementų programa nustatytus elemento skerspjūvio temperatūrinius laukus medienos stiprių pokyčiams įvertinti. Skaičiavimo duomenys grindžiami atliktais eksperimentiniais liaunų medinių centriškai gniuždomų strypų atsparumo ugniai tyrimo duomenimis ir rezultatais. Medienos stiprių pokyčiai, naudojami skaičiuojant, paimti remiantis Lietuvoje augančios pušiės medienos stiprių pokyčių bandymo rezultatais.

Finite Element Analysis of the Vertical Bearing Capacity of Single Piles in Tianjin Soft Soil Areas

2012 ◽  
Vol 446-449 ◽  
pp. 1387-1390
Author(s):  
Shi Lun Feng ◽  
Yu Ming Zhou ◽  
Jun Li ◽  
Pu Lin Li
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Static Load ◽  
Soft Soil ◽  
Element Analysis ◽  
Finite Element Software ◽  
Single Piles ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity

The ABAQUS finite element software is used to calculate the vertical bearing capacity of single piles in Tianjin, and the finite element results are compared with the data gained through the in-situ static load pile foundation tests. It is found that the Young’s modulus of the soil at the bottom of the pile could have a important role in improving the vertical bearing capacity of single piles.

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