Crack width-based fragility curves for repairability of substandard beam-column joints

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F21%3A39917445" target="_blank" >RIV/00216275:25510/21:39917445 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s10518-021-01218-6" target="_blank" >https://link.springer.com/article/10.1007/s10518-021-01218-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10518-021-01218-6" target="_blank" >10.1007/s10518-021-01218-6</a>

Result language

angličtina

Original language name

Crack width-based fragility curves for repairability of substandard beam-column joints

Original language description

Post-earthquake observations have outlined the poor seismic performance of substandard reinforced concrete (RC) beam-column joints in existing buildings. They often exhibit significant cracking even under moderate intensity earthquakes, compromising the seismic performance of the entire building. This makes the quantification of their residual capacity and the definition of reliable repairability thresholds critical. Different approaches are available in the literature to establish the repairability of RC joints. However, a simple crack width-based criterion is required for practitioners during in-situ inspections. This study deals with the definition of crack width-based fragility curves relying on numerical analyses. Those are carried out by using the validated finite element (FE) models, being capable of reproducing the initiation and development of cracks in RC joints. To this end, the uncertainties in material properties, influencing the seismic performance of structural components, are accounted for different joints. In particular, experimentally validated FE models are evolved to stochastic level by generating random variables of material properties with the stratified sampling scheme. Fragility curves representing a certain level of probability of exceeding the defined crack width at the joint back, joint core, and beam-to-joint interface are developed. An application of the proposed methodology for in-situ inspections is also presented, and the results of in-situ measurements of residual crack width from real buildings damaged by recent earthquakes are used for the validation.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Bulletin of Earthquake Engineering

ISSN

1570-761X

e-ISSN

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Volume of the periodical

19

Issue of the periodical within the volume

14

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

31

Pages from-to

6081-6111

UT code for WoS article

000694791100001

EID of the result in the Scopus database

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