Journal ArticleDOI
Procedure for determining the seismic vulnerability of an irregular isolated bridge
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In this paper, a seismic vulnerability procedure, based on the capacity/demand ratio approach, is applied to an irregular isolated bridge, where special features are incorporated in both, demand estimation and capacity evaluation.Abstract:
A seismic vulnerability procedure, based on the capacity/demand ratio approach, is applied to an irregular isolated bridge. Special features are incorporated in both, demand estimation and capacity evaluation. The seismic demand is represented by an average pseudo-acceleration spectrum derived from 159 earthquake accelerograms recorded in the region where the bridge is located. The capacity spectrum method is adopted for estimating the structural expected performance for several limit states. The capacity curve derived from a static non-linear procedure is obtained by means of a lateral load pattern that follows the displacement configuration, previously assessed by the use of time history analyses of the bridge supported on non-linear isolator bearings. Based on a moment–curvature analysis of the pier's sections, the maximum curvature ductility was established for each of the four defined performance limit states. Finally, probability density functions of the bridge capacity and demand were assessed and ...read more
Citations
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Seismic fragility assessment of highway bridges: a state-of-the-art review
TL;DR: A review of the available methodologies and identifies opportunities for future development can be found in this paper, where the authors mainly focus on the key features of different methodologies, along with their features, limitations and applications.
Journal ArticleDOI
Maintenance, management, life-cycle design and performance of structures and infrastructures: a brief review
TL;DR: A brief review of the recent research accomplishments in the field of design, maintenance, life-cycle management, and optimisation of structures and infrastructures reported in papers published in Structure and Infrastructure Engineering (SIE) during the period 2005-2011 can be found in this paper.
Uncoupled multivariate power models for estimating performance-based seismic damage states of column curvature ductility
Journal ArticleDOI
Seismic fragility analysis of typical pre-1990 bridges due to near- and far-field ground motions
TL;DR: In this paper, a family of existing concrete bridges representative of the most common bridges in the highway system in Iran is studied and the seismic demand consists in a set of far-field and near-field strong motions to evaluate the likelihood of exceeding the seismic capacity of the mentioned bridges.
Journal ArticleDOI
Dynamic Structural Health Monitoring of Slender Structures Using Optical Sensors
TL;DR: This work describes the implementation of an optical biaxial accelerometer based on fiber Bragg gratings inscribed on optical fibers and proves the feasibility of FBG accelerometers to obtain the structures' natural frequencies, which are the key parameters in Structural Health Monitoring.
References
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Journal ArticleDOI
Empirical Response Spectral Attenuation Relations for Shallow Crustal Earthquakes
TL;DR: In this article, empirical response spectral attenuation relations for the average horizontal and vertical component for shallow earthquakes in active tectonic regions were derived using a database of 655 recordings from 58 earthquakes.
Journal ArticleDOI
Pros and cons of a pushover analysis of seismic performance evaluation
TL;DR: In this paper, the authors summarize basic concepts on which the pushover analysis can be based, assess the accuracy of pushover predictions, identify conditions under which pushover will provide adequate information and, perhaps more importantly, identify cases in which the prediction will be inadequate or even misleading.
Journal ArticleDOI
Adaptive Spectra‐Based Pushover Procedure for Seismic Evaluation of Structures
Balram Gupta,Sashi K. Kunnath +1 more
TL;DR: In this article, a new adaptive adaptive site-specific spectra-based pushover analysis is proposed, which accounts for the effect of higher modes and overcomes the shortcomings of the FEMA procedure.
Book
Reliability-based design
TL;DR: Design of mechanical components and systems Monte Carlo simulation reliability-based optimum design strength-based reliability and interface theory reliability testing time dependent reliability of component and systems failure modes, event tree and fault tree analysis.