Influence of pile inclination angle on the dynamic properties and seismic response of piled structures

摘要

This paper aims to contribute to clarify whether the use of battered piles has a positive or a negative influence on the dynamic response of deep foundations and superstructures. For this purpose, the dynamic response of slender and non-slender structures supported on several configurations of 2 x 2 and 3 x 3 pile groups including battered elements is obtained through a procedure based on a substructuring model assuming a linear elastic response and taking soil-structure interaction into account. Results are expressed in terms of flexible-base period and maximum shear force at the base of the structure. Moreover, modified response spectra considering soil-structure interaction effects are provided for different rake angles. It is shown that an increment of the rake angle can result in beneficial or detrimental effects depending on the structural slenderness ratio. (C) 2014 Elsevier Ltd. All rights reserved.