Kinematic Interaction and Rocking Effects on the Seismic Response of Viaducts on Pile Foundations

Journal Article · Tue Jul 08 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2963894· OSTI ID:21149034

Dezi, F ^[1]; Carbonari, S ^[2]; Leoni, G ^[3]

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1. Dept of Materials, Environment Engineering and Physics, Universita Politecnica delle Marche (Italy)
2. Dept of Architecture, Constructions, Structures, Universita Politecnica delle Marche (Italy)
3. Dept ProCAm, Universita di Camerino, Ascoli Piceno (Italy)

This paper is aimed at providing a contribution for a more accurate and effective design of bridges founded on piles. A numerical model is employed herein to determine the stresses and displacements in the piles taking into account soil-foundation-structure interaction. A 3D finite element approach is developed for piles and superstructure whereas the soil is assumed to be a Winkler-type medium. The method is applied to single piers representative for a class of bridges. Varying the soil layers characteristics and the pile spacing (from 3 to 5 diameters), bending and axial stresses along piles as well as the pier base shear are computed. A comparison with respect to a fixed-base model is provided. Special issues such as the contribution of the soil profile, of the local amplification and of the rocking at the foundation level are discussed. Soil-structure interaction is found to be essential for effective design of bridges especially for squat piers and soft soil.

• OSTI ID: 21149034
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1020; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
BENDING
BRIDGES
DESIGN
FINITE ELEMENT METHOD
FOUNDATIONS
HYDROLOGY
LAYERS
NUMERICAL ANALYSIS
SEISMOLOGY
SHEAR
SOIL-STRUCTURE INTERACTIONS
SOILS