Effect of Slope on P-Y Curves Due to Surcharge Load

Muthukkumaran, Kasinathan; Sundaravadivelu, R.; Gandhi, S. R.

doi:10.3208/sandf.48.353

Cited by 71 publications

(14 citation statements)

References 19 publications

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“…In his study, the seabed instability manifested in movement of soil layers, exerts lateral forces that may cause large stresses in offshore foundations. Many researchers have also studied the influence of ground slope on laterally loaded pile behaviour (Muthukkumaran et al (2008); Almas Begum and Muthukkumaran (2009); Muthukkumaran (2014)).…”

Section: Introductionmentioning

confidence: 99%

Effect of seabed slope on pile behaviour of fixed offshore platform under lateral forces

Muthukkumaran

Arun

2015

J. Ocean Eng. Mar. Energy

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Fixed offshore platforms supported by pile foundations are required to resist lateral load due to wave and current forces. The response to environmental loads is strongly affected by the soil structure (pile) interaction. The forces exerted by waves are most dominant among the lateral environmental forces which governing the jacket structures design especially the foundation piles. The present investigation is to perform a static wave analysis on a typical fixed offshore platform for extreme environmental conditions, and to study the effects of the combined lateral and vertical loads on pile group foundation. The three dimensional modeling and analysis of the offshore platform are done using finite difference method. The present analysis was done under static condition considering the structural and the environmental loads at extreme environmental conditions, by reaching the state of static equilibrium. A parametric study has been done by varying the seabed slope to examine the variation in soilstructure interaction behaviour of piles. It has been found that the lateral displacement at the pile top and at the seabed level increases as the seabed slope increases. It is also noticed that the depth at which the maximum shear force and bending moment occurs from the pile top increases as the slope of the seabed increases.

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Section: Introductionmentioning

confidence: 99%

Effect of seabed slope on pile behaviour of fixed offshore platform under lateral forces

Muthukkumaran

Arun

2015

J. Ocean Eng. Mar. Energy

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“…e horizontal displacement, y i , slope, φ i , bending moment, M i , and shear, Q i , at each pile node can be solved by (19) by using an iteration process as shown in Figure 5.…”

Section: Finite DI Erence Solutionmentioning

confidence: 99%

“…Compared to conventional piles, they may undergo severe reduction in horizontal bearing behavior. Although conventional laterally loaded piles have been studied by many researchers [9][10][11][12][13][14][15], limited literature can be found for piles in sloping ground [16][17][18][19][20][21][22][23]. In the past, the lateral behavior of piles could be evaluated with assumed earth pressure distribution, which can also be determined from field or model tests.…”

Section: Introductionmentioning

confidence: 99%

A Simplified Nonlinear Method for a Laterally Loaded Pile in Sloping Ground

Peng

Yang

2018

Advances in Civil Engineering

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A simplified nonlinear method was proposed to evaluate lateral behavior of a pile located in or nearby a slope, based on the traditional p-y method. is method was validated with field test results of a steel pipe pile in clay and model tests of piles in sand slopes. e comparison indicated that the calculated horizontal displacement and bending moment of piles agree well with experimental results. en, parametric studies were performed, and it shows that horizontal displacement, rotation, bending moment, and shear force increase along with increasing slope angles; the depth of maximum moment locates at about 1.6 D below ground surface for horizontal ground, while this value turns to be about 3.6 D and 5.6 D for sloping ground of 30°and 60°, respectively. e study clearly shows that slope angle has a significant effect on the deflection and lateral capacity of piles.

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“…In this study, seabed instability manifested in the movement of soil layers, exerting lateral forces that might cause large stresses on offshore foundations. Many researchers have also studied the influence of ground slope on laterally loaded pile behaviour (Muthukkumaran et al 2008;Almas Begum and Muthukkumaran 2009;Muthukkumaran 2014).…”

Section: Introductionmentioning

confidence: 99%

Erratum to: Effect of seabed slope on the pile behaviour of a fixed offshore platform under lateral forces

Muthukkumaran

Arun

2015

J. Ocean Eng. Mar. Energy

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Fixed offshore platforms supported by pile foundations have to resist lateral loads due to wave and current forces. The response to environmental loads is strongly affected by the soil-structure (pile) interaction. Forces exerted by waves are the predominant lateral environmental forces governing jacket structure design, especially the foundation piles. The purpose of the present investigation is to perform a static wave analysis of a typical fixed offshore platform in extreme environmental conditions and to study the effects of the combined lateral and vertical loads on pile group foundations. The three-dimensional modelling and analysis of the offshore platform are carried out using the finite difference method. The present analysis is done under static conditions considering the structural and environmental loads at extreme environmental conditions, reaching the state of static equilibrium. A parametric study is done by varying the seabed slope to examine the differences in the soil-structure interaction behaviour of piles. The lateral displacement at the pile top and at the seabed level increases with the seabed slope. Also the depth at which the maximum shear force and bending moment occur from the pile top increases with the seabed slope.

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Effect of Slope on P-Y Curves Due to Surcharge Load

Cited by 71 publications

References 19 publications

Effect of seabed slope on pile behaviour of fixed offshore platform under lateral forces

Effect of seabed slope on pile behaviour of fixed offshore platform under lateral forces

A Simplified Nonlinear Method for a Laterally Loaded Pile in Sloping Ground

Erratum to: Effect of seabed slope on the pile behaviour of a fixed offshore platform under lateral forces

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