Analytical Model for the End-Bearing Capacity of Tapered Piles Using Cavity Expansion Theory

Manandhar, Suman; Yasufuku, Noriyuki

doi:10.1155/2012/749540

Cited by 10 publications

(5 citation statements)

References 18 publications

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“…Despite these relatively small loads in non-uniform piles, Table 4 indicates that the unit toe resistance of non-uniform piles is at least 100% larger than that of uniform piles at the same level of pile head displacement. Thus, it is revealed that tapering the pile affects both side and tip behavior of piles, as also found by Manandhar and Yasufuku (2012).…”

Section: Taper Effect On Pile Tip Loadssupporting

confidence: 67%

Centrifuge tests on axially loaded tapered piles with different cross-sections under compressive and tensile loading

Shabanpour

Ghazavi

2022

Can. Geotech. J.

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The compressive behavior of tapered piles, particularly those with circular cross-sections, has been investigated during the last few decades. However, the tensile behavior of such piles has been rarely studied in the literature. In this paper, 12 static axial tests, including six compressive and also six tensile tests, were performed on instrumented piles with uniform and tapered cross-sections by using a geotechnical centrifuge. Three of the piles had correspondingly circular, square and X-shaped uniform cross-sections along their length, while the other three ones were non-uniform (tapered), all of which had the same length and volume. The results are presented in three main forms: the variation of load versus pile head displacement, the distribution of axial force along the pile length, and the distribution of the unit shaft resistance along the pile length. The behavior of tapered piles is compared with that of uniform cross-section piles. The results confirm the superiority of tapered piles over uniform cross-section piles in terms of load-bearing capacity and construction costs under both tensile and compressive loading.

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Section: Taper Effect On Pile Tip Loadssupporting

confidence: 67%

Centrifuge tests on axially loaded tapered piles with different cross-sections under compressive and tensile loading

Shabanpour

Ghazavi

2022

Can. Geotech. J.

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“…Multiple authors have approached the behavior of variable cross-section elements with analytical solutions [5,14,26,[30][31][32][33][34]. For instance, Eisenbergb [14] presented a formulation to analyze beams with variable cross-section.…”

Section: Analytical Solutionsmentioning

confidence: 99%

Soil–pile interaction considering structural yielding: Numerical modeling and experimental validation

Kampitsis

Giannakos

Gerolymos

et al. 2015

Engineering Structures

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“… Geometric alternatives to support structures—Foundation geometry is a defining factor for total loading capacity and pile displacement ( Frost et al, 2017 ). Conical piles provide an increased bearing capacity compared to straight-sided cylindrical piles ( Manandhar and Yasufuku, 2012 ). The lateral surface texture of foundation piles is another parameter to increase loading capacity by increasing shear strength of its interface with soil ( Martinez and Frost, 2017 ).…”

Section: Application Of Root Biology To Technical Designsmentioning

confidence: 99%

Root Systems Research for Bioinspired Resilient Design: A Concept Framework for Foundation and Coastal Engineering

Stachew¹,

Houette²,

Gruber³

2021

Front. Robot. AI

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The continuous increase in population and human migration to urban and coastal areas leads to the expansion of built environments over natural habitats. Current infrastructure suffers from environmental changes and their impact on ecosystem services. Foundations are static anchoring structures dependent on soil compaction, which reduces water infiltration and increases flooding. Coastal infrastructure reduces wave action and landward erosion but alters natural habitat and sediment transport. On the other hand, root systems are multifunctional, resilient, biological structures that offer promising strategies for the design of civil and coastal infrastructure, such as adaptivity, multifunctionality, self-healing, mechanical and chemical soil attachment. Therefore, the biomimetic methodology is employed to abstract root strategies of interest for the design of building foundations and coastal infrastructures that prevent soil erosion, anchor structures, penetrate soils, and provide natural habitat. The strategies are described in a literature review on root biology, then these principles are abstracted from their biological context to show their potential for engineering transfer. After a review of current and developing technologies in both application fields, the abstracted strategies are translated into conceptual designs for foundation and coastal engineering. In addition to presenting the potential of root-inspired designs for both fields, this paper also showcases the main steps of the biomimetic methodology from the study of a biological system to the development of conceptual technical designs. In this way the paper also contributes to the development of a more strategic intersection between biology and engineering and provides a framework for further research and development projects.

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Analytical Model for the End-Bearing Capacity of Tapered Piles Using Cavity Expansion Theory

Cited by 10 publications

References 18 publications

Centrifuge tests on axially loaded tapered piles with different cross-sections under compressive and tensile loading

Centrifuge tests on axially loaded tapered piles with different cross-sections under compressive and tensile loading

Soil–pile interaction considering structural yielding: Numerical modeling and experimental validation

Root Systems Research for Bioinspired Resilient Design: A Concept Framework for Foundation and Coastal Engineering

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