Resumo

FERNANDEZ SOLA, Luciano R; AVILES LOPEZ, Javier  e  MURIA VILA, David. Distribución de elementos mecánicos en pilas sujetas a fuerzas en la cabeza y ante la incidencia de ondas sísmicas. Ing. sísm [online]. 2012, n.87, pp.1-23. ISSN 0185-092X.

Conventional design of piles under lateral loads considers almost in an exclusively way the action of the forces that the structure introduces into the head of the pile. Seismic waves passing through the foundation produces inner forces on the piles too, due to the strain incompatibility between the pile and the surrounding soil. The distribution and magnitude of internal forces due to forces at pile head and wave passage are very different and depend strongly on soil stratigraphy and supporting conditions on the pile toe and head. In this work a finite layer method to compute internal forces generated by lateral solicitations on embedded piles is used. A partial rotation restriction at the pile toe and the connection of the pile to the superstructure is explicitly considered. These issues have an important influence, particularly on piles with large diameters. A parametric analysis for different soil-pile configurations subjected to lateral forces is developed, in order to establish qualitative differences between the solicitations produced by forces at pile head and those produce by wave passage.

Palavras-chave : Piles; kinematic and inertial interaction; foundation design.

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