چکیده مقاله
In the present study, the torque twist behavior of non linear pile soil system related to the wave current loading on Jacket type offshore platform is investigated The non linearities of pile soil with respect to both depth and the twist angle of pile are considered The basic differential equilibrium equations of the pile soil system are derived based on hyperelasticity theory of soil A numerical central finite difference method is applied based on simplification of stress field around the pile elements which takes into account changes in the secondary shear stress components and also non linearities due to non homogeneous soil condition This method uses a one dimensional mesh along pile soil interface It also takes into account the changes in G of soil with respect to the twist angle of pile In a separate work, the simulated torque twist behavior of pile soil system based on this analysis approach is compared with the results of more refined finite element analysis by using continuum mechanics theory and also full scale pile soil test results Emami,2002 The torque twist results by using the proposed approach have been used to study the behavior of two jacket pile soil systems under sea environmental and accidental loading
کلیدواژهها
نویسندگان
M.R. Emami Azadi
Department of Civil Eng , Sahand Univ of Technology, Tabriz, Iran
S. Nordal Professor
Department of Geotechnical Eng , Univ of Science & Technology, Norway
شیوه ارجاع
M.R. Emami Azadi, and S. Nordal Professor, ,1382,Nonlinear Behavior of Pile-Soil Subjected to Torsion due to Environmental Loads on Jacket Type Platforms,6th International Conference on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات ششمین کنفرانس بین المللی مهندسی عمران15 اردیبهشت 1382 · اصفهان