Incorporation Of The Soil-structure Interaction
Into Performance-based Design
Author(s)
J. Avilés & L. E. Pérez-Rocha
Abstract
A performance-based design is aimed at controlling the structural damage based
on precise estimations of proper response parameters. This is possible if more
accurate analyses are carried out, including all potential important factors
involved in the structural behaviour, as is the case of soil-structure interaction.
This paper presents a simplified procedure for practical damage analysis of
structures elastically supported, with potential application to performance-based
design. The damage model proposed here is based on maximum displacement
and dissipated energy under monotonic loading, with the effects of cyclic
behaviour and load reversals being estimated by using a modified Park-Ang
index. Analyses are made for a single elastoplastic structure with embedded
foundation in a stratum over rigid bedrock. This is done by using an analogy
with an equivalent fixed-base oscillator defined by the coupled period and
damping of the system and its global ductility. Selected numerical results are
presented in terms of dimensionless parameters, the significance of soil-structure
interaction in the structural performance is elucidated and the adequacy of the
approach presented is examined.
Keywords: damage model, equivalent oscillator, performance-based design,
soil-structure interaction, strength and damage spectra.
1 Introduction
It is widely recognised that the performance-based design requires more accurate
analyses, including all potential important factors involved in the structural
behaviour. Only in this way we can improve the prediction of the expected level
of structural damage associated with a given level of earthquake. One of these
Keywords
damage model, equivalent oscillator, performance-based design,
soil-structure interaction, strength and damage spectra.
Related Book
Other papers in this volume
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