Journal ArticleDOI
Soil-pile-bridge seismic interaction : Kinematic and inertial effects. Part I: Soft soil
TLDR
In this article, a substructuring method has been implemented for the seismic analysis of bridge piers founded on vertical piles and pile groups in multi-layered soil, which reproduces semi-analytically both the kinematic and inertial soil-structure interaction, in a simple realistic way.Abstract:
SUMMARY A substructuring method has been implemented for the seismic analysis of bridge piers founded on vertical piles and pile groups in multi-layered soil. The method reproduces semi-analytically both the kinematic and inertial soil—structure interaction, in a simple realistic way. Vertical S-wave propagation and the pile-to-pile interplay are treated with suƒcient rigor, within the realm of equivalent-linear soil behaviour, while a variety of support conditions of the bridge deck on the pier can be studied with the method. Analyses are performed in both frequency and time domains, with the excitation specified at the surface of the outcropping (‘elastic’) rock. A parameter study explores the role of soil—structure interaction by elucidating, for typical bridge piers founded on soft soil, the key phenomena and parameters associated with the interplay between seismic excitation, soil profile, pile—foundation, and superstructure. Results illustrate the potential errors from ignoring: (i) the radiation damping generated from the oscillating piles, and (ii) the rotational component of motion at the head of the single pile or the pile-group cap. Results are obtained for accelerations of bridge deck and foundation points, as well as for bending moments along the piles.read more
Citations
More filters
Journal ArticleDOI
Seismic soil-structure interaction: beneficial or detrimental?
George Mylonakis,George Gazetas +1 more
TL;DR: In this article, the role of soil-structure interaction (SSI) in the seismic response of structures is reexplored using recorded motions and theoretical considerations, and it is shown that an increase in the fundamental natural period of a moderately flexible structure due to SSI may have a detrimental effect on the imposed seismic demand.
Journal ArticleDOI
Footings under seismic loading: Analysis and design issues with emphasis on bridge foundations
TL;DR: In this paper, the authors provide state-of-the-art information on the following aspects of seismic analysis and design of spread footings supporting bridge piers: (1) obtaining the dynamic stiffness (springs and dashpots) of the foundation; (2) computing the kinematic response; determining the conditions under which foundation compliance must be incorporated in dynamic structural analysis; assessing the importance of properly modeling the effect of embedment; elucidating the conditions in which the effects of radiation damping is significant.
Journal ArticleDOI
Measurement of the dynamic displacements and of the modal frequencies of a short-span pedestrian bridge using GPS and an accelerometer
Fanis Moschas,Stathis C. Stiros +1 more
TL;DR: In this article, signal analysis techniques (supervised-type learning filter in combination with a Chebyshev filter) constrained and tested by independent accelerometer data were used to process noisy GPS measurements of oscillations of 40 m long steel footbridge excited by coordinated jumps of a group of people.
Journal ArticleDOI
Kinematic pile bending during earthquakes: analysis and field measurements
TL;DR: The passage of seismic waves through the soil surrounding a pile imposes lateral displacements and curvatures on the pile, thereby generating "kinematic" bending moments even in the absence of a su...
Journal ArticleDOI
Two-Dimensional Nonlinear Earthquake Response Analysis of a Bridge-Foundation-Ground System
TL;DR: In this article, the authors presented a two-dimensional advanced nonlinear FE model of an actual bridge, the Humboldt Bay Middle Channel (HBMC) Bridge, and its response to seismic input motions.
References
More filters
Dynamics of structures
Ray W. Clough,Joseph Penzien +1 more
TL;DR: In this article, a single-degree-of-freedom (SDF) dynamic system is considered, and the effect of different degrees of freedom on the dynamics of the system is investigated.
Journal ArticleDOI
Transmission of Elastic Waves through a Stratified Solid Medium
TL;DR: In this article, the transmission of a plane elastic wave at oblique incidence through a stratified solid medium consisting of any number of parallel plates of different material and thickness is studied theoretically.
Book
Dynamics Of Structures
TL;DR: In this paper, an overview of structural dynamics analysis of free vibrations response to harmonic loading response, periodic loading response to impulse loading response and general dynamic loading -step by step methods, superposition methods generalized single degree-of-freedom systems.
Book
Dynamic soil-structure interaction
Abstract: Keywords: Interaction-sol-structure Reference Record created on 2004-09-07, modified on 2016-08-08
Related Papers (5)
Dynamic pile‐soil‐pile interaction. Part II: Lateral and seismic response
Nicos Makris,George Gazetas +1 more
Seismic soil-structure interaction: beneficial or detrimental?
George Mylonakis,George Gazetas +1 more