... foundation parametric study skin friction equation Investigation of the Equivalent Rocking Stiffness for Pile Raft Foundation Systems of Wind Turbines Shuhan Cao, Khalid Abdel-Rahman, Florian tom Wörden, Martin Achmus Institute for Geotechnical Engineering, Leibniz University Hannover Hannover, Lower...

... bucket 3 reservoir geomechanics reservoir characterization friction upstream oil & gas calculation interface friction in-situ vertical stress vertical stress foundation th horizontal soil slice consolidation settlement foundation load skin friction bucket 2 friction angle renewable...

... the SEM images of shark skin, it is found that shark skin has scale alike dermal denticles, which are packed tightly together and grow with their tips facing backwards, as shown in figure 1. The existence of these "scales" not only helps shark to reduce skin friction hydro-dynamically, but also prevent...

.... displacement load test skin friction foundation axial force upstream oil & gas maximum bearing capacity diaphragm wall foundation ultimate bearing capacity o-cell method bottom plate top plate base resistance intermediary weathered tuff bearing capacity resistance load cell friction...

... strength using different displacement rates. Pull-out skin friction development at ultimate strength was dependent on the anchor material type and rate of pullout. Hyperbolic model has been developed to correlate pullout skin friction to the normalized displacement rate. Ultimate pull-out skin friction...

... and stress analysis which allows the description of the load-bearing behavior in dependence of the mentioned parameters. Quite complex interaction effects between the suction pressure inside the bucket and the skin friction on skirt perimeter become evident. A main challenge in the modeling...

... Abstract Aimed at the time effect, group effect and difference between negative skin friction (NSF) on pile in sand and that in clay, a series of model tests include single pile tests and pile group tests were carried out. The test results indicate that the NSF on pile increases...

... reservoir characterization increment clay property sa li energy increase friction calculation model pipe pile deep penetration pile disturbance upstream oil & gas diameter srd skin friction clay layer strength sand layer unit skin friction The Study of the Influence of Large Diameter...

... based on changing soil structure strength is put forward. Combining with the actual engineering, the analysis indicates that enhancing the mobilized soil skin friction to 110% of the static soil skin friction can well fit the actual metrical result. Such approach is suited under the condition of driving...

... resistance diameter control test tank upstream oil & gas model caisson electrokinetic treatment test displacement soil plug electrode foundation skin friction seawater calcareous sand caisson electrokinetic treatment pullout test subsea system cementation Electrokinetic Cementation...

..., destroys the cementation bonds and results in low skin friction between the soil and foundation elements (Dolwin et al., 1988). Suction caissons have been used as anchors for floating platforms in many sites including the North Sea, Brazil, Gulf of Mexico, Timor Sea, West Africa, and West of Shetlands...

... ABSTRACT The Kn method is suggested for estimation of the skin friction of large size pneumatic caisson having a wide base and the cutting edge. The λ method used widely for deep foundations are also investigated for applicability in estimation of the skin friction of large size pneumatic...

... structure, a 150 meter long barge type floating structure moored at the operation site, is producing and refining the crude oil in company with a TLP (Tension Leg Platform). fpu oil separator skin friction separator pressure drop oil separator free surface level crude oil degrees-of-freedom...

... of these overtrawl or snag loads can conceivably occur near the corners of these structures. This can therefore induce both a horizontal load and considerable torsion on the foundation. skin friction strength displacement casing and cementing casing design translational torque loading subsea...

... block anchor. upstream oil & gas anchor pullout capacity maeno tokyo bay concrete block sinker loading rate suction anchor breakout factor inclination skin friction concrete block anchor loading angle subsea system pore pressure block anchor submerged weight soft mud...

..., and the conclusions drawn depend on some degree of personal interpretation of less than perfect data. compression jardine offshore platform subsea system super pile consolidated clay bearing capacity plasticity pile test low plasticity skin friction calculation method dense sand houston pile tip...

.... Through the analyses, the me- chanical characteristics of skin friction around pile shaft and base bear- ing resistance at pile tip were elucidated. KEY WORDS : base bearing resistance, bearing mechanism, cast-in- place bored pile, numerical simulation, pile diameter, skin friction INTRODUCTION Generally...

... superficial layer of firm clay (Undrained shear strength Su ~ 80 kPa). imperial college jardine skin friction borehole log recommendation effective stress approach chow relative density pile capacity resistance offshore structure dense sand bustamante load test prediction upstream oil...

... the estimated capacity. Therefore, understanding the nature and the behavior of downdrag forces along the pile shaft is essential. This paper describes the measurement of negative skin friction forces on the model piles driven in the cylindrical chamber filled with remolded marine clay. Three instrumented...

... ABSTRACT: Open ended piles develop internal frictional resistance between the internal soil plug and the pile wall during axial loading. Current pipe pile design practice assumes that the ultimate internal skin friction Is of the same order of magnitude as the outer skin friction. This paper...