BUCKLING OF FRICTION PILES SUPPORTING BRIDGE FOUNDATIONS

摘要: In practice, evidence suggests that long, slender piles subjected to axial loads can fail under stresses below the yield point of pile material. However, using minimum potential-energy method, it is possible quantify a general solution for critical buckling capacity friction in clay. The Rayleigh-Ritz method used select deflection functions satisfying nine geometric boundary conditions. equivalent length and load are determined from eigenvalues estimated by Jacobi Rotation Transformation method. Parameter studies performed investigate response fully partially embedded indicated conditions tip have no effect on when nondimensional embedment exceeds value. value depends pile-top condition ratio (defined as divided total length). Side friction's contribution stability results less than 7% variation length. model's applicability illustrated design example load-test data reported literature.