Application of Finite Element Method in Calculating the Bearing Capacity of Pile Boots
WANG Nan
ZHU Long-hai
JIANG Sheng-hui
HU Ri-jun
XU Yong-chen
Abstract：Pitching pile of self elevating drilling platform is a dynamic process of continu-ous plastic damage of foundation soils in the pile shoe loads .When the ultimate bearing capacity of foundation equals to the load on pile boots ,the pile pitching is completed . Because the classical theory of limit bearing capacity of soil mechanics has made assump-tions to the sliding surface hidden in the soil body ,the damage process occurring inside the soil could not be analyzed efficiently .For this reason ,the finite element method (FEM ) is used to simulate the pile pitching process ,by w hich the failure mechanism of foundation soils and the stress-strain of subsoil body under a middle load are obtained . By comparing with the ultimate bearing capacity calculated by using different theoretical formulae ,the factors influencing the ultimate bearing capacity of foundation soils are analyzed .T he results reveal that the larger the B/H ratio is ,the easier the plastic dam-age occurs in the underlying soft stratum .As a result ,the ultimate bearing capacity re-duces obviously .When the value of B/H is less than 0 .286 ,the influence of the under-lying soft stratum on the ultimate bearing capacity of foundation soils can be ignored .
Keywords：pile bootsfinite element methodultimate bearing capacity
Publication Date：2014-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：11( 36-46 )