... injection injection point pile foundation installation grout injection pressure pipe bearing capacity injection rod platform design offshore pile foundation injection sequence foundation initial stiffness research project enhanced recovery grout bulb application compaction upstream oil...

... tangent function is used to describe the p-y relationship. The p u -value and the initial stiffness of the p-y curve E py characterize the p-y curve. These values are depth-dependent and calculated from the angle of internal friction φ' and the buoyant unit weight γ' of the sandy soil. The method...

...-spring model can be achieved if the p-y-curves according to the API guidelines are modified at small displacements. Furthermore, the eigenfrequency of an offshore wind turbine predicted with the initial stiffness of API p-y-curves and the modified p-y-curves are compared with in-situ measurements...

... for large and small loads. variation bedding resistance numerical result consistency soil stiffness small load soft clay upstream oil & gas initial stiffness simulation resistance foundation stiffness reservoir characterization api pile stiffness stiffness pile dimension matlock...

... test characteristic renewable energy non-dimensional parameter offshore wind turbine prototype soil-structure interaction monopile initial stiffness support structure interaction wind energy soil sample dimensionless parameter experiment natural frequency confinement stress stiffness...

... relative densities (25%, 50% and 75%) and corresponding friction angles of surrounding soils. It was found that the lateral displacements and maximum bending moment were significantly affected by varying friction angle. initial stiffness stiffness ampl 75 ultimate soil reaction foundation...

... ABSTRACT Gusset-plate to CHS tube joints are connections where the end of a plate is directly welded to the outer surface of a tube. This study proposes equations for ultimate and yield strength, initial stiffness and local deformation at ultimate strength for these types of connections...

... near the center of the chord. The initial stiffness and the yield strength of each model for each loading condition were determined from the load-displacement relationship according to the defini- tions described in Chapter 4. The results are shown in the following chapters. In the cases of the loading...

... with the particular damping model and method of analysis. There are no standard methods of measuring damping properties, and choice of experimental method may significantly influence the results. hysteresis proceedings initial stiffness test result flexible pipe experiment upstream oil & gas...