Axisymmetric finite element analysis of pile loading tests
Axisymmetric finite element analysis of pile loading tests
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DOI：
10.1016/j.compgeo.2008.02.011
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发表时间：
2009
影响因子：
5.3
通讯作者：
I. Said;V. D. Gennaro;R. Frank
中科院分区：
文献类型：
--
作者：
I. Said;V. D. Gennaro;R. Frank
In this paper a typical soil–structure interaction problem is considered, the case of a vertical pile installed in sand and submitted to an axial compression loading. Results from two full scale pile tests are analysed and the tests are reproduced by numerical simulations via finite elements method (FEM). The choice of the mechanical parameters for the soil and the sand–pile interface and the modelling approach are first described. A new numerical strategy is outlined to account for pile installation effects due to jacking and driving via FEM. The proposed approach is based on the application of existing empirical correlations available for the quantification of residual radial and shear stresses along the pile shaft as well as residual pressures around the pile base after the installation. This approach is proposed as an alternative to more complex methods based on the numerical modelling of the pile penetration problem. The role of the constitutive modelling of the interface is also discussed. Finally, comparative analyses of pile loading tests using FEM are provided and the comparisons between numerical and experimental results are presented and discussed.
