Numerical Simulation of Vertical Pullout of Plate Anchors in Clay

Song, Zhaojie; Hu, Yuxia; Randolph, Mark

doi:10.1061/(asce)1090-0241(2008)134:6(866)

Cited by 113 publications

(70 citation statements)

References 17 publications

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“…The advantage of RITSS is that the remeshing and interpolation strategy can be coupled with any standard FE program, such as the locally developed program AFENA [7] and the commercial package Abaqus/Standard, through user-written interface codes. The potential of the approach has been highlighted by varied two-dimensional (2D) and three-dimensional (3D) applications of monotonic and cyclic penetration of penetrometers [19,52], penetration of spudcan foundations for mobile jack-up rigs [16,17,51], lateral buckling of pipelines [49,8] and uplift capacity and keying of mooring anchors [31,[43][44][45]47,38,39]. More recently, RITSS was extended from static to dynamic analyses [48].…”

Section: Introductionmentioning

confidence: 99%

Large deformation finite element analyses in geotechnical engineering

Wang

Bienen

Nazem

et al. 2015

Computers and Geotechnics

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232

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a b s t r a c tGeotechnical applications often involve large displacements of structural elements, such as penetrometers or footings, in soil. Three numerical analysis approaches capable of accounting for large deformations are investigated here: the implicit remeshing and interpolation technique by small strain (RITSS), an efficient Arbitrary Lagrangian-Eulerian (EALE) implicit method and the Coupled Eulerian-Lagrangian (CEL) approach available as part of commercial software. The theoretical basis and implementation of the methods are discussed before their relative performance is evaluated through four benchmark cases covering static, dynamic and coupled problems in geotechnical engineering. Available established analytical and numerical results are also provided for comparison purpose. The advantages and limitation of the different approaches are highlighted. The RITSS and EALE predict comparable results in all cases, demonstrating the robustness of both in-house codes. Employing implicit integration scheme, RITSS and EALE have stable convergence although their computational efficiency may be low for high-speed problems. The CEL is commercially available, but user expertise on element size, critical step time and critical velocity for quasi-static analysis is required. Additionally, mesh-independency is not satisfactorily achieved in the CEL analysis for the dynamic case.

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Section: Introductionmentioning

confidence: 99%

Large deformation finite element analyses in geotechnical engineering

Wang

Bienen

Nazem

et al. 2015

Computers and Geotechnics

Self Cite

232

View full text Add to dashboard Cite

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“…As pointed out by Song et al (2008), with this criterion, the anchor capacity may be lower than the true capacity because of its dependence on the soil stiffness.…”

Section: The Specified Displacement Criterionmentioning

confidence: 99%

“…From the practical point of view, unless a clearly defined unlimited load (i.e., general shear failure) could be observed earlier, the UPC would be regarded as the load when reaching a limit of critical settlement, such as 10% of the footing depth. In the small deformation analysis by Song et al (2008), the ultimate capacity was assumed to be at a given displacement value. For circular anchors, the specified displacement is 25% of the anchor diameter.…”

Section: The Specified Displacement Criterionmentioning

confidence: 99%

The Criterion for Determining the Ultimate Pullout Capacity of Plate Anchors in Clay by Numerical Analysis

Liu¹,

Su²,

Zhou³

2014

American Journal of Engineering and Applied Sciences

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The Ultimate Pullout Capacity (UPC) is an important index in designing and analyzing plate anchors. However, there are still uncertainties in determining the UPC through the load-displacement curves calculated from numerical analysis. The review on the existing criteria for determining the UPC also demonstrates that there has not been a generally accepted criterion and most existing criteria are not only uncertain but also irrational. Considering that there are still divergences and confusions in determining the UPC and specific studies are rare, further investigations are needed to clarify this basic but important topic before analyzing the UPC and the performance of plate anchors. The present work just emphasizes on the criterion for determining the UPC of plate anchors in clay. After a review of current studies on this topic, the maximum resistance criterion based on large deformation finite element analysis is recommended to determine the UPC of plate anchors, which accords with two rules. The first, a deterministic value of UPC can be obtained by using the criterion. The second, the criterion must be rational which means that it implies clear and right physical meaning and can be generally applied. This criterion is validated firstly by three model tests and then applied to rectangular and circular plate anchors at different embedment depths in both uniform and linear clays to calculate the bearing capacity factors.

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“…have been developed to meet the demand for large pull out capacity foundation system. A number of investigations on uplift capacity of anchors were carried out by the several investigators (Balla 1961;Adams and Hayes 1967;Sutherland 1965;Sutherland et al 1982;Das and Jin 1987;Subbarao et al 1988;Dickin 1988;Dickin and Leung 1990;Hanna and Ghaly 1994;Ilamparuthi and Dickin 2001a, b;Sawwaf and Nazir 2006;Sakai and Tanaka 2007;Song et al 2008;Kouzer and Jyant 2009;Khatri and Kumar 2009). From the above investigations it is found that the study on uplift capacity of belled anchors with and without ties is very limited.…”

Section: List Of Symbolsmentioning

confidence: 99%

Effect of Geotextile Ties on Uplift Capacity of Anchors Embedded in Sand

Ghosh

Bera

2010

Geotech Geol Eng

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This paper presents the results of experimental investigation on the effect of geotextile ties on uplift capacity of anchors embedded in sand. Uplift capacity of anchor increases with increase in embedment depth to base diameter (H/D) ratio irrespective of type of anchor. With the introduction of tie to anchors, uplift capacity of anchors increases and optimum number of layers of ties is found to be 2. A non linear power model has been developed to predict the uplift capacity at any settlement (Q R ) of anchors with tie in terms of uplift capacity at any settlement (Q URs ) of anchor without tie, H/D ratio, number of layers of tie and displacement to base diameter ratio (D/D). The model is applicable for predicting Q R having the values of Q RS , H/D, N and D/D in the range of 0.257 B Q URs B 1.420, 1.5 B H/D B 3.0, 1 B N B 4, 0.8 B D/D B 8.

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Numerical Simulation of Vertical Pullout of Plate Anchors in Clay

Cited by 113 publications

References 17 publications

Large deformation finite element analyses in geotechnical engineering

Large deformation finite element analyses in geotechnical engineering

The Criterion for Determining the Ultimate Pullout Capacity of Plate Anchors in Clay by Numerical Analysis

Effect of Geotextile Ties on Uplift Capacity of Anchors Embedded in Sand

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