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A platform for research: civil engineering, architecture and urbanism
Bridge classes for regional seismic risk assessment: Improving HAZUS models
https://orcid.org/0000-0001-8435-3919
HighlightsCritical review of HAZUS grouping of bridge classes and HAZUS fragilities.A novel methodology to group the bridge classes.Performance-based grouping of bridge classes.Revised grouping of bridge classes in California.
AbstractRecent efforts are oriented towards the regional risk assessment of bridge inventories by grouping bridge classes which are expected to have similar performance or damage measures during a seismic event. Although HAZUS represents the current state of the art in grouping the bridge classes, it suffers many drawbacks such as grouping based on traditional subjective approach, failure in explicitly addressing the effect of design and geometric attributes, and neglecting the effect of abutment type. A critical review of the HAZUS grouping and associated fragilities highlights the need for a more refined sub-binning of bridge classes for a reliable estimate of the seismic risk. Towards the objective of a performance-based grouping of bridge classes, a new grouping technique rooted in the statistical technique called analysis of variance is suggested in this paper. The approach is used to improve the HAZUS grouping through the case studies of California box-girder bridges. The proposed approach identifies more sub-classes than the HAZUS grouping, and the significance of the proposed grouping is demonstrated through the comparison of fragility curves of three bridge classes identified by the proposed grouping methodology.
Bridge classes for regional seismic risk assessment: Improving HAZUS models
https://orcid.org/0000-0001-8435-3919
HighlightsCritical review of HAZUS grouping of bridge classes and HAZUS fragilities.A novel methodology to group the bridge classes.Performance-based grouping of bridge classes.Revised grouping of bridge classes in California.
AbstractRecent efforts are oriented towards the regional risk assessment of bridge inventories by grouping bridge classes which are expected to have similar performance or damage measures during a seismic event. Although HAZUS represents the current state of the art in grouping the bridge classes, it suffers many drawbacks such as grouping based on traditional subjective approach, failure in explicitly addressing the effect of design and geometric attributes, and neglecting the effect of abutment type. A critical review of the HAZUS grouping and associated fragilities highlights the need for a more refined sub-binning of bridge classes for a reliable estimate of the seismic risk. Towards the objective of a performance-based grouping of bridge classes, a new grouping technique rooted in the statistical technique called analysis of variance is suggested in this paper. The approach is used to improve the HAZUS grouping through the case studies of California box-girder bridges. The proposed approach identifies more sub-classes than the HAZUS grouping, and the significance of the proposed grouping is demonstrated through the comparison of fragility curves of three bridge classes identified by the proposed grouping methodology.
Bridge classes for regional seismic risk assessment: Improving HAZUS models
https://orcid.org/0000-0001-8435-3919
HighlightsCritical review of HAZUS grouping of bridge classes and HAZUS fragilities.A novel methodology to group the bridge classes.Performance-based grouping of bridge classes.Revised grouping of bridge classes in California.
AbstractRecent efforts are oriented towards the regional risk assessment of bridge inventories by grouping bridge classes which are expected to have similar performance or damage measures during a seismic event. Although HAZUS represents the current state of the art in grouping the bridge classes, it suffers many drawbacks such as grouping based on traditional subjective approach, failure in explicitly addressing the effect of design and geometric attributes, and neglecting the effect of abutment type. A critical review of the HAZUS grouping and associated fragilities highlights the need for a more refined sub-binning of bridge classes for a reliable estimate of the seismic risk. Towards the objective of a performance-based grouping of bridge classes, a new grouping technique rooted in the statistical technique called analysis of variance is suggested in this paper. The approach is used to improve the HAZUS grouping through the case studies of California box-girder bridges. The proposed approach identifies more sub-classes than the HAZUS grouping, and the significance of the proposed grouping is demonstrated through the comparison of fragility curves of three bridge classes identified by the proposed grouping methodology.
Bridge classes for regional seismic risk assessment: Improving HAZUS models
Mangalathu, Sujith (author) / Soleimani, Farahnaz (author) / Jeon, Jong-Su (author)
Engineering Structures ; 148 ; 755-766
2017-07-07
12 pages
Article (Journal)
Electronic Resource
English
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