Seismic Fragility Evaluation of Retrofitted Low-Rise RC Structures

Mohamed Noureldin*, Jinkoo Kim

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

In this research, a seismic fragility evaluation is used to assess the seismic performance of low-rise RC structures retrofitted with self-centering post-tensioned pre-cast concrete (SC-PC) frame with enlarged beam-ends. The seismic performance of the retrofitted structures is verified by constructing fragility curves for the retrofitted and retrofitted structure. Thirty natural time-history earthquake records are generated based on a design response spectrum to construct the seismic fragility curves. Nonlinear time history (NLTH) analysis is used to obtain the median structural demand. Limit states are defined based on seismic guidelines to represent the median structural capacity. The relation between the demand and capacity is modeled as a lognormal cumulative density function in a closed-form equation. The results of the study show that the SC-PC frame is effective in seismic retrofitting and significantly improves the structure seismic fragility for all limit states. In addition, the results show that the most significant improvement is found for the collapse-prevention limit state where severe earthquakes are expected.
Original languageEnglish
Title of host publicationProceedings of the 3rd GeoMEast International Congress and Exhibition, Egypt 2019 on ustainable Civil Infrastructures – The Official International Congress of the Soil-Structure Interaction Group in Egypt (SSIGE)
PublisherSpringer
Number of pages12
ISBN (Electronic)978-3-030-34252-4
ISBN (Print)978-3-030-34251-7
DOIs
Publication statusPublished - 2020
MoE publication typeA4 Conference publication
EventInternational Congress and Exhibition Sustainable Civil Infrastructures - Cairo, Egypt
Duration: 10 Nov 201914 Nov 2019

Publication series

NameSustainable Civil Infrastructures

Conference

ConferenceInternational Congress and Exhibition Sustainable Civil Infrastructures
Abbreviated titleGeoMEast
Country/TerritoryEgypt
CityCairo
Period10/11/201914/11/2019

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