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Journal Articles Soils Dynamics and Earthquake Engineering Year : 2006

Influence of the head and tip connection on the seismic performance of micropiles

Abstract

This paper presents a study of the influence of connection conditions at the head and tip of micropiles on their response to seismic loading. The study is carried using a fully three-dimensional finite element modeling. The soil is assumed to be elastic with Rayleigh damping. The superstructure is modeled by a single degree of freedom system composed of a concentrated mass and a column. The study is carried out for both vertical and inclined micropiles. The results of analyses show that a pinned connection between the micropiles and the cap leads to a reduction in the axial force and bending moment in micropiles, in particular for inclined micropiles. They also show that the embeddement of the tip of micropiles in a stiff substratum layer leads to a dramatic increase in the internal forces in the micropiles.

Dates and versions

hal-00021647 , version 1 (23-03-2006)

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Marwan Sadek, Isam Shahrour. Influence of the head and tip connection on the seismic performance of micropiles. Soils Dynamics and Earthquake Engineering, 2006, 26, pp.461-468. ⟨10.1016/j.soildyn.2005.10.003⟩. ⟨hal-00021647⟩

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