Centrifuges in modelling: principles and scale effects

Taylor, R.N.

doi:10.1201/9781482269321-2

Cited by 31 publications

(47 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Remaud (1999) claimed that "…the ratio must be 60 times the diameter of the pile". Taylor (1995) however, reported that "…the ratio should be at least 100". In the current study, the ratio of the diameter of pile to medium diameter (d/d50) was 133 as indicated in Fig.…”

Section: Sand Propertiesmentioning

confidence: 99%

Performance analysis of an evolutionary LM algorithm to model the load-settlement response of steel piles embedded in sandy soil

et al. 2019

View full text Add to dashboard Cite

This study was implemented to examine pile load-settlement response and to develop a rapid, highly efficient predictive intelligent model, using a new computational intelligence (CI) algorithm. To achieve this aim, a series of experimental pile load tests were performed on steel, closed-ended pile models consisting of three piles with aspect ratios of 25, 17, and 12 in an attempt to make site in-situ pile-load tests unnecessary. An optimised, evolutionary, supervised Levenberg-Marquardt (LM) training algorithm was used for this process due to its remarkably robust performance. The model piles were penetrated and tested in three sand relative densities; dense, medium, and loose. Applied load (P), pile effective length (lc), pile flexural rigidity (EA), pile slenderness ratio (lc/d) and interface friction angle (δ) were identified, based on a comprehensive statistical analysis, as these parameters play a key role in governing pile settlement. To evaluate the efficiency and the generalisation ability of the proposed algorithm, graphical comparisons were made between the proposed algorithm and the experimental results with further comparisons made with conventional prediction approaches. The results revealed outstanding agreement between the targeted and predicted pile-load settlement with a coefficient of correlation of 0.985 and a Pearson's correlation coefficient, P = 2.22 x10-32 and root mean square error (RMSE) of 0.059 respectively. This, in parallel with a non-significant mean square error level (MSE) of 0.002, validates the feasibility of the proposed method and its potential in future applications.

show abstract

Section: Sand Propertiesmentioning

confidence: 99%

Performance analysis of an evolutionary LM algorithm to model the load-settlement response of steel piles embedded in sandy soil

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Centrifuge gravity, g, is typically assumed as a one-dimensional vector field in the vertical 33 rotational plane of (r, Y) with g̃ dependent on the centrifuge radial coordinate, r (Madabhushi, 34 2015;Murff, 1996;Schofield, 1980Schofield, , 1988Taylor, 1995). This 1D definition can describe a 35 nonlinear effective stress distribution with depth in a small scale model.…”

Section: Background 28mentioning

confidence: 99%

“…Centrifuge gravity is more frequently considered as two-dimensional in the horizontal radial plane 52 (r, θ) (Madabhushi, 2015;Park, 2014;Taylor, 1995) where centrifugal acceleration can be defined 53 as constant in polar coordinates, but varies across model Cartesian coordinates (x,z). It is common 54 practice to modify model geometry to account for this variation if model width in the y coordinate 55 axis is large (Park, 2014;Taylor, 1995). 56…”

Section: Background 28mentioning

confidence: 99%

See 1 more Smart Citation

Centrifuge 2D gravity on a vertical rotational reference frame

Beemer

Biscontin

Aubeny

2019

International Journal of Physical Modelling in Geotechnics

View full text Add to dashboard Cite

gco component of centrifugal acceleration for a known reference gravity vector, gõ, on the vertical reference plane, R ge magnitude of Earth's gravity vector, gẽ α angle between a centrifuge gravity vector, g, and the centrifuge radial coordinate, r αo angle between a reference gravity vector, gõ, and the centrifuge radial coordinate, r β angle between a centrifuge gravity vector, g, and the local vertical coordinate, z βo angle between the local vertical coordinate axis, z, and the centrifuge radial coordinate, r ξ angle between the local vertical coordinate axis, z, and the centrifuge radial coordinate, r gx component of centrifuge gravity, g, in model local horizontal coordinate, x gz component of centrifuge gravity, g, in model local vertical coordinate, z M Mass of centrifuge basket αb Angle of centrifuge basket relative to centrifuge radial coordinate, r Lb Distance between basket hinge and the basket mass, M Rb Distance between centrifuge axis, Y, and basket hinged Distance between the basket centreline and the basket mass, M L Angle between the centreline of the basket and the project line, L, between the basket hinge and the basket mass, M Δαb Angle between the centreline of the basket and the project line, L, between the basket hinge and the basket mass, M α2D

show abstract

“…이중에서 석션기 초는 안정성과 효율성을 가진 경제적인 지지구조물로 주목받 아왔다 (Houlsby et al, 2005;LeBlanc et al, 2010;Zhu et al, 2011;Hung and Kim, 2014;Kim et al, 2014a (Tjelta, 2001;Sparrevik, 2002;Anderson et al, 2005;Randolph and House, 2002 (Wang, et al, 2006;Zhang et al, 2011). (Schofield, 1980;Taylor, 1995 레이저변위센서를 사용하여 지지구조물의 수직변위를 측정 하였다( Fig. 5의 L02, L03…”

unclassified

Effect of Skirt Length on Behavior of Suction Foundations for Offshore Wind Turbines Installed in Dense Sand Subjected to Earthquake Loadings

Choo¹,

Olalo²,

Bae³

2016

J Korean Soc Coast Ocean Eng

View full text Add to dashboard Cite

This study aims to analyze seismic responses of suction foundations for offshore wind turbine. For this purpose, dynamic centrifuge model tests were carried out. The skirt length of the suction foundation is a critical element for bearing mechanism against environmental loads. Thus, dynamic centrifuge model tests were performed and analyzed for three suction foundation models with the ratios of skirt length to suction foundation diameter of 0.5, 0.75, and 1 installed in dense sand. As results, the acceleration amplification at the suction foundation, residual settlement, and residual tilting angle were compared.

show abstract

Centrifuges in modelling: principles and scale effects

Cited by 31 publications

References 1 publication

Performance analysis of an evolutionary LM algorithm to model the load-settlement response of steel piles embedded in sandy soil

Performance analysis of an evolutionary LM algorithm to model the load-settlement response of steel piles embedded in sandy soil

Centrifuge 2D gravity on a vertical rotational reference frame

Effect of Skirt Length on Behavior of Suction Foundations for Offshore Wind Turbines Installed in Dense Sand Subjected to Earthquake Loadings

Contact Info

Product

Resources

About