A numerical analysis on the effect of pile head connections on piled raft foundation subjected to vertical and static horizontal load

Kumar, Uttam; Vasanwala, Sandip A.

doi:10.1016/j.matpr.2020.12.1048

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Additionally, a nite element analysis was conducted to assess the horizontal and moment capacity of piled-raft foundation due to various in uential parameters. The foundation settlements and differential horizontal displacements were larger for separate footings compared to raft foundations [13,16,17]. The fundamental period of the structure gets signi cantly affect with increasing raft exibility, non-identical pile lengths [18].…”

Section: Literature Reviewmentioning

confidence: 99%

Soil-Solid Raft Interaction Analysis Subjected To Seismic Forces

Prabhu¹,

Mutalikdesai²

2023

Preprint

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The response of a raft foundation to seismic loading, and examines the changes in soil consideration and importance factor suggested in the latest seismic codes, IS 1893-2002 and IS 1893-2016. The two methods of analysis suggested by IS 2950-1981 code, rigid and flexible approaches for vertical and evenly distributed loads are examined. Literature review reveals that soil-structure interaction and finite element analysis are used in analysis and design of raft foundation. A case study is conducted to compare the manual calculations and rigid method with finite element methods and soft computing techniques. The results of the study conclude that the deflection, bending moment and soil pressure per meter width are effectively expressed in terms of relative stiffness factor, and that the magnitude of maximum bending moment increases with increase in the relative stiffness. The established variation patterns of contact pressures may not be applicable for raft under dynamic loading condition.

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Section: Literature Reviewmentioning

confidence: 99%

Soil-Solid Raft Interaction Analysis Subjected To Seismic Forces

Prabhu¹,

Mutalikdesai²

2023

Preprint

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Numerical Analysis of Combined Helical Pile Raft Foundation (CHPRF) Under Compressive and Tensile Loadings

Ghosh,

Garg,

Saha Roy

2024

Indian Geotech J

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Numerical investigation on reinforced cement concrete helical piles subjected to combined axial and lateral loading

Arun Kumar,

Shetty,

Krishnamoorthy

2024

Innov. Infrastruct. Solut.

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The research proposes the introduction of helices into the very popular reinforced cement concrete (RCC) piles to enhance the soil–pile interaction. The behavior of RCC helical piles under combined axial and lateral loading are reported. A 3D finite element model is developed using Abaqus software to simulate the pile–soil interaction. Steel helical piles have gained popularity due to their ease of installation and higher load-carrying capacity in comparison with plain RCC piles. The presence of helices in steel helical piles interlocks with the surrounding soil and exhibits higher load-carrying capacity. The load-bearing capacity of RCC piles is generally lower than that of steel helical piles; however, RCC piles are considered more economical. This study aims to enhance the performance of RCC piles by introducing a helical groove. In this paper, the performance of RCC helical piles is studied by varying the L/d (length-to-diameter) ratio of the pile and the elastic modulus of the soil. The outcomes reveal that RCC helical piles exhibit superior performance compared to plain piles, showcasing a significant reduction in settlement by 32%. This improved performance of RCC helical piles is observed across various combinations of L/d ratios and soil elastic modulus as compared to plain piles.

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A numerical analysis on the effect of pile head connections on piled raft foundation subjected to vertical and static horizontal load

Cited by 3 publications

References 4 publications

Soil-Solid Raft Interaction Analysis Subjected To Seismic Forces

Soil-Solid Raft Interaction Analysis Subjected To Seismic Forces

Numerical Analysis of Combined Helical Pile Raft Foundation (CHPRF) Under Compressive and Tensile Loadings

Numerical investigation on reinforced cement concrete helical piles subjected to combined axial and lateral loading

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