Centrifuge study of the combined bearing capacity of a hybrid foundation system

2013 ◽  
pp. 487-492 ◽  
Author(s):  
N Cheng ◽  
C Gaudin ◽  
M Cassidy ◽  
B Bienen
Keyword(s):  
Bearing Capacity ◽  
Hybrid Foundation

Undrained capacity of a hybrid subsea skirted mat with caissons under combined loading

2014 ◽  
Vol 51 (8) ◽  
pp. 934-949 ◽  
Author(s):  
Dengfeng Fu ◽  
Britta Bienen ◽  
Christophe Gaudin ◽  
Mark Cassidy
Keyword(s):  
Bearing Capacity ◽  
Numerical Investigation ◽  
Failure Mechanism ◽  
Combined Loading ◽  
Vertical Load ◽  
Lateral Loads ◽  
Suction Caisson ◽  
Conservative Approximation ◽  
Homogeneous Soil ◽  
Hybrid Foundation

Skirted mudmats are commonly used to support offshore infrastructure. However, these may not be able to provide sufficient capacity to notably withstand the lateral loads applied by jumpers and connectors. The concept of hybrid foundation system was therefore proposed to enhance the capacity in a targeted fashion, through addition of internal suction caisson compartments. This paper presents a numerical investigation into the undrained bearing capacity of a rectangular-shaped hybrid foundation with two caisson units. Uniaxial capacities under vertical, horizontal, and moment loading are reported, but the focus lies on the horizontal–moment planes due to the anticipated low vertical load on the foundation. Detailed discussion highlights the contribution of the internal caisson compartments to the significant increases in horizontal capacity compared to a simple rectangular skirted mat through changes in the failure mechanism. This results not only in changes in size, but also in shape, of the capacity envelope. The study was extended to more general horizontal–moment loading conditions, where the shape of the capacity envelope was found to remain approximately constant. This applies to the hybrid foundation and the rectangular skirted mat in the homogeneous soil considered here. An expression is proposed that provides a slightly conservative approximation of the capacity envelope under combined horizontal and moment loading from any direction.

Physical and numerical study of the combined bearing capacity of hybrid foundation systems

2019 ◽  
Vol 179 ◽  
pp. 104-115 ◽  
Author(s):  
Ning Cheng ◽  
Christophe Gaudin ◽  
Mark Jason Cassidy
Keyword(s):  
Bearing Capacity ◽  
Numerical Study ◽  
Hybrid Foundation

scholarly journals Analysis and Geotechnical Design of Hybrid Foundation for Tall Wind Turbine

2021 ◽  
Vol 9 (9) ◽  
pp. 346-350
Author(s):  
Shruti Birhare
Keyword(s):  
Bearing Capacity ◽  
Wind Turbine ◽  
Wind Turbines ◽  
Energy Demand ◽  
Differential Settlement ◽  
Raft Foundation ◽  
Total Settlement ◽  
Geotechnical Design ◽  
Hybrid Foundation

Abstract: The significance of wind turbines in meeting the expanding energy demand is critical. Taller towers should be employed to boost the power producing capability. The foundation must be efficient in order to securely carry the heavier loads of taller towers. When sustaining loads from superstructure are considered then bearing capacity of raft is taken into account for pile raft foundation. Piles help to strengthen the raft's bearing capacity while also regulating settlement in this arrangement, particularly differential settlement. A hybrid foundation, i.e. a pile raft foundation, is investigated and geotechnically designed here. The effectiveness of this system is demonstrated using the measures total settlement, differential settlement, and rotation. Keywords: Pile raft foundation, differential settlement, total settlement, wind turbin, bearing capacity

Determination of Bearing Capacity of Cleared and Graded Areas at Airports

2021 ◽  
Vol 147 (1) ◽  
pp. 04020086
Author(s):  
Vittorio Ranieri ◽  
Nicola Berloco ◽  
Donato D’Auria ◽  
Vincenzo Disalvo ◽  
Veronica Fedele ◽  
...  
Keyword(s):  
Bearing Capacity

Improvement of Bearing Capacity of Soil using Bamboo and Geosynthetics

2017 ◽  
Vol 5 (4) ◽  
pp. 17
Author(s):  
Mamatha M. ◽  
Kommu Suresh ◽  
◽  
Keyword(s):  
Bearing Capacity

Effect of Pile and Load Inclination on the Pile Resistance In both Compression and Tension

2014 ◽  
Vol 2 (1) ◽  
pp. 11-29
Author(s):  
Ahmad Jabber Hussain ◽  
Alaa Dawood Salman ◽  
. Nazar Hassan Mohammad
Keyword(s):  
Bearing Capacity ◽  
Inclination Angle ◽  
Theoretical Study ◽  
Pile Installation ◽  
Soil Failure ◽  
Inclined Pile ◽  
Uplift Resistance ◽  
Lift Forces ◽  
Batter Piles ◽  
Pile Resistance

      According to this theoretical study which was about loading of piles under different condition of loading (compression and up-lift forces ) and for deferent pile installation (vertical and inclined pile ) by which it called (positive batter pile ) when the inclination of the load and pile is in the same direction and called (negative batter pile) when the inclination of load is opposite to the pile inclination, and from studying these cases the results of analysis can be summarize in the flowing points: 1-Variation of load inclination on piles effects on the bearing capacity and uplift resistance. It was found that bearing capacity of the piles increase with increasing of load inclination up to the inclination angle (37.5ͦ) which represents the maximum bearing capacity and then the bearing capacity decrease with increasing of load inclination. 2- Variation of batter pile affects the bearing capacity of the pile and up-lift resistance. by which equivalent angle will be used as result between the load and piles inclination and this angle will be used in calculation of piles resistance . 3- It was noticed the shape of soil failure is highly affected by the inclination of pile. The shape of failure for the soil which is in contact with pile and this include (vertical and batter piles) is highly affected by the angle of inclination.

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