THEORETICAL MODELLING OF SPUDCAN BEHAVIOUR UNDER COMBINED LOAD

This paper presents centrifuge model test data of the behaviour of a circular spudcan footing on drained saturated silica sand subjected to combined vertical, horizontal, and moment loading. The data are compared with predictions of a numerical model, and with relevant aspects of the recent code of recommended practice by SNAME (1994).

[1]  J. D. Murff,et al.  Jackup Rig Foundation Modelling , 1992 .

[2]  Paulo Eduardo Lima de Santa Maria.  Behaviour of footings for offshore structures under combined loads , 1988 .

[3]  W. P. Stewart,et al.  On-Bottom Stability of Jackups , 1989 .

[4]  A. N. Schofield,et al.  Centrifuge Modelling of 3-Leg Jackups with Non-Skirted and Skirted Spuds on Partially Drained Sand , 1995 .

[5]  G. N. Bycroft.  Forced vibrations of a rigid circular plate on a semi-infinite elastic space and on an elastic stratum , 1956, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

[6]  Guido Gottardi,et al.  A complete three-dimensional failure envelope for shallow footings on sand , 1994 .

[7]  Norihiko Sakata,et al.  Full-Scale Measurement of Natural Frequency and Damping Ratio of Jackup Rigs and Some Theoretical Considerations , 1982 .

[8]  J. D. Murff,et al.  Calibration of a Jackup Structural Analysis Procedure Using Field Measurements From a North Sea Jackup , 1990 .

[9]  Michael C. Georgiadis,et al.  DISPLACEMENTS OF FOOTINGS ON SAND UNDER ECCENTRIC AND INCLINED LOADS , 1988 .

[10]  R.W.P. Stonor,et al.  Results of a jack-up measurement programme in the North Sea and their comparison with the structural analysis , 1993 .

[11]  Gregory B. Baecher,et al.  Uncertainty in Bearing Capacity of Sands , 1983 .

[12]  Andrew Schofield,et al.  Cambridge Geotechnical Centrifuge Operations , 1980 .

[13]  R. Nova,et al.  Settlements of shallow foundations on sand , 1991 .

[14]  Alan G. Young,et al.  Foundation Performance of Offshore Jack-Up Drilling Rigs , 1984 .

[15]  V. Drnevich,et al.  SHEAR MODULUS AND DAMPING IN SOILS: DESIGN EQUATIONS AND CURVES , 1972 .

[16]  E. C. Hambly.  Jackup sliding/bearing resistance on sand , 1992 .

[17]  N. Spidsoe.  Non-linear dynamic behaviour of jackup platforms , 1993 .

[18]  H. Poulos,et al.  Elastic solutions for soil and rock mechanics , 1973 .

[19]  W. P. Stewart,et al.  Observed Storm Stability of Jackup Boats (Liftboats) , 1991 .

[20]  Aleksandar S. Vesic,et al.  Analysis of Ultimate Loads of Shallow Foundations , 1973 .

[21]  C. K. Lau,et al.  Scale effects in tests on footings , 1988 .

[22]  W O McCarron,et al.  MEASURED JACK-UP RESPONSE AND SPUDCAN-SEAFLOOR INTERACTION FOR AN EXTREME STORM EVENT , 1992 .

[23]  W. B. Ingram,et al.  Jackup Footing Performance: An Integrated Approach to Geotechnical Assessment. , 1989 .

[24]  Guido Gottardi,et al.  THE DISPLACEMENT OF A MODEL RIGID SURFACE FOOTING ON DENSE SAND UNDER GENERAL PLANAR LOADING , 1995 .

[25]  Sname.  Site Specific Assessment of Mobile Jackup Units , 1994 .

[26]  J. Blaauwendraad,et al.  Response of Jackup Models to Irregular Waves , 1991 .

[27]  H. Borowicka.  Uner ausmittig belaste starre platten auf elastich-isotropem untergrund, , 1943 .

[28]  A. N. Schofield,et al.  Centrifuge modelling of jackups and spudcans on drained and partially drained silica sand , 1995 .

[29]  Wai-Fah Chen,et al.  Bearing Capacity of Shallow Foundations , 1991 .

[30]  Andrew Schofield,et al.  Dynamic and Earthquake Geotechnical Centrifuge Modelling , 1981 .

[31]  植下 協.  「土質・岩盤力学のための弾性解」, Poulos, H.G. and Davis, E. H. : "Elastic Solutions for Soil and Rock Mechanics, " John Wiley & Sons, Inc., 1974. , 1974 .

[32]  Finian Seng Chin Tan.  Centrifuge and theoretical modelling of conical footings on sand , 1990 .

[33]  Dobroslav Znidarčić,et al.  Centrifugal Modeling of Bearing Capacity of Shallow Foundations on Sands , 1995 .

[34]  A. N. Schofield,et al.  THE BEARING CAPACITY OF CONICAL FOOTINGS ON SAND IN RELATION TO THE BEHAVIOUR OF SPUDCAN FOOTINGS OF JACKUPS , 1993 .

[35]  J. N. Brekke,et al.  Calibration of Jackup Leg Foundation Model Using Full-Scale Structural Measurements , 1989 .

[36]  D. Milović.  Stresses and displacements for shallow foundations , 1992 .

[37]  E. C. Hambly,et al.  Jackup Performance and Foundation Fixity Under Developing Storm Conditions , 1990 .

[38]  E C Hambly,et al.  JACK-UP DYNAMIC STABILITY UNDER EXTREME STORM CONDITIONS , 1991 .

[39]  N. Krebs Ovesen,et al.  Centrifugal testing applied to bearing capacity problems of footings on sand , 1975 .

[40]  J D Murff,et al.  CENTRIFUGE TESTING OF FOUNDATION BEHAVIOUR USING FULL JACKUP RIG MODELS , 1991 .

[41]  Guido Gottardi,et al.  ON THE BEARING CAPACITY OF SURFACE FOOTINGS ON SAND UNDER GENERAL PLANAR LOADS , 1993 .

[42]  J. J. Osborne,et al.  Findings From a Joint Industry Study on Foundation Fixity of Jackup Units , 1991 .

[43]  G.J.M. Schotman.  The Effects of Displacements on the Stability of Jackup Spud-Can Foundations , 1989 .

[44]  T. O. Weaver.  Calibration of a dynamic analysis procedure using measurements from a North Sea jackup , 1995 .