Ultimate lateral bearing capacity of tetrapod jacket foundation in clay

Zhao, Zihao; Li, Dayong; Zhang, Fei; Qiu, Yue

doi:10.1016/j.compgeo.2016.12.005

Cited by 17 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1×4 and 4×1). In such a case, the results of Zhao et al (2017b) suggest that alternative loading directions (i.e. not aligned with either the x or y direction in Fig.…”

Section: Problem Definitionmentioning

confidence: 97%

“…Using three-dimensional finite element (FE) modelling, Georgiadis (2014) reported that group effects on the ultimate soil pressure acting on a pile row were depthdependent: pile interaction was negligible close to the soil surface and tended to a higher limiting value at greater depths. Georgiadis et al (2013aGeorgiadis et al ( ,2013b, Zhao et al (2017a) and Zhao et al (2017b) used two-dimensional FE modelling to derive expressions for the ultimate bearing capacity for a group of two, three and four piles respectively, considering pile spacing, pile-soil adhesion and load direction. More recently, Sheil (2020) used two-dimensional FE to develop closed-form equations for the determination of the limiting pressure acting on square groups of 4 to 25 piles.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Group shape effects on the lateral capacity of pile groups in undrained soil

Swallow

Sheil

2023

Géotechnique

View full text Add to dashboard Cite

In this paper, the lateral limiting pressure on rectangular pile groups in undrained soil is explored using two-dimensional finite-element (FE) modelling. The primary aim of the study is to assess the influence of pile group shape effects on the soil limiting pressure offered by the deep ‘flow-around’ failure mechanism, and associated soil failure mechanisms, considering both a small (four piles) and large (36 piles) group. Additional parameters considered in the modelling include pile spacing and pile–soil interface roughness. The FE results show that group shape has a significant influence on the behaviour of closely spaced pile groups. In particular, the number of piles parallel to the direction of loading is shown to dominate the lateral bearing capacity factor such that significant increases in capacity efficiency can be achieved by slight modifications to the group shape for a given number of piles. The load-sharing across the group, traditionally defined using p-multipliers, was also shown to be highly non-uniform and dependent on group size, pile–soil roughness and group geometry in addition to the pile spacing. The FE output is presented in the form of design charts for the determination of group p-multipliers, whereas a library of existing design solutions is presented for the calculation of the overall group response.

show abstract

“…1×4 and 4×1). In such a case, the results of Zhao et al (2017b) suggest that alternative loading directions (i.e. not aligned with either the x or y direction in Fig.…”

Section: Problem Definitionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Group shape effects on the lateral capacity of pile groups in undrained soil

Swallow

Sheil

2023

Géotechnique

View full text Add to dashboard Cite

show abstract

“…Martin & Randolph (2006). Using 3D finite element (FE) analysis Georgiadis (2014) showed that the deep failure mechanism for an infinitely long pile row also corresponds to a 2-D 'flow-around' mechanism; this prompted more recent extensions to two side-by-side piles (Georgiadis et al 2013a(Georgiadis et al , 2013b, tripod groups (Zhao et al 2017a), tetrapod groups (Zhao et al 2017b), square groups (Sheil 2021) and rectangular groups (Swallow & Sheil 2021). Application in engineering practice involves incorporating these limiting pressures within existing design methods capable of describing the overall loaddisplacement of the group, such as those proposed by Comodromos and Pitilakis (2005) and Papadopoulou (2012, 2013).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the deep soil failure mechanism for perimeter pile groups

Watford¹,

Templeman²,

Orazalin³

et al. 2022

Géotechnique Letters

View full text Add to dashboard Cite

In this paper, the lateral limiting pressure offered by the deep ‘flow-around’ soil failure mechanism for perimeter (ring) pile groups in undrained soil is explored using two−dimensional finite element modelling. A parametric study investigates the role of group configuration, pile−soil adhesion, group size, pile spacing and load direction on group capacity and corresponding soil failure mechanisms. The finite element output show that the plan group configuration (square or circular) has a negligible influence on lateral capacity for closely spaced perimeter pile groups. When compared to ‘full’ square pile groups with the same number of piles, the present results suggest that for practical pile spacing (≳ two pile diameters), perimeter groups do not necessarily increase capacity efficiency, particularly if the piles are smooth. Nevertheless, perimeter groups are shown to be characterized by both the invariance of their capacity to the direction of loading and their highly uniform load-sharing between piles, which are beneficial features to optimize design.

show abstract

Reliability Assessment of Shallow Foundation Stability Under Eccentric Load Using Monte Carlo and First Order Second Moment Method

Fatolahzadeh

Mehdizadeh

2021

Geotech Geol Eng

View full text Add to dashboard Cite

Ultimate lateral bearing capacity of tetrapod jacket foundation in clay

Cited by 17 publications

References 10 publications

Group shape effects on the lateral capacity of pile groups in undrained soil

Group shape effects on the lateral capacity of pile groups in undrained soil

Numerical analysis of the deep soil failure mechanism for perimeter pile groups

Reliability Assessment of Shallow Foundation Stability Under Eccentric Load Using Monte Carlo and First Order Second Moment Method

Contact Info

Product

Resources

About