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Modelling Soil Behavior under Cyclic Stresses
The foundations of offshore platforms are subjected to complex cyclic stresses due to swell. Dimensioning of piles requires new calculation methods. The finite element method is well suited to solve these problems if the evolution of mechanical properties of the soil, undergoing a great number of loading cycles, are taken into account and if parameters can be determined by soil tests. The behavior of soils under cyclic stresses is studied in this work by an elastoplastic formulation and by the introduction of kinematic hardening taking into account continuous and discontinuous evolution parameters for effects of loading cycles in the range of about 100, allowing the calculation of an underwater foundation (pile or gravity structure) under few hundreds cycles corresponding to exceptional stresses (decennial or centennial storm). (ERA citation 12:043812)
Modelling Soil Behavior under Cyclic Stresses
The foundations of offshore platforms are subjected to complex cyclic stresses due to swell. Dimensioning of piles requires new calculation methods. The finite element method is well suited to solve these problems if the evolution of mechanical properties of the soil, undergoing a great number of loading cycles, are taken into account and if parameters can be determined by soil tests. The behavior of soils under cyclic stresses is studied in this work by an elastoplastic formulation and by the introduction of kinematic hardening taking into account continuous and discontinuous evolution parameters for effects of loading cycles in the range of about 100, allowing the calculation of an underwater foundation (pile or gravity structure) under few hundreds cycles corresponding to exceptional stresses (decennial or centennial storm). (ERA citation 12:043812)
Modelling Soil Behavior under Cyclic Stresses
F. Lassoudiere (author)
1984
159 pages
Report
No indication
English
Ocean Sciences & Technology , Civil Engineering , Mineral Industries , Soil & Rock Mechanics , Foundations , Clays , Compressibility , Dynamic Loads , Elasticity , Finite Element Method , Friction , Plasticity , Sand , Simulation , Soil-Structure Interactions , Foreign technology , Offshore structures , Offshore platforms , ERDA/423000
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