CFRP-based structural repairing and strengthening of deficient cast-in-place RC foundation-column joints
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F25%3A39923017" target="_blank" >RIV/00216275:25510/25:39923017 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.engstruct.2025.121236" target="_blank" >https://doi.org/10.1016/j.engstruct.2025.121236</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.engstruct.2025.121236" target="_blank" >10.1016/j.engstruct.2025.121236</a>
Alternative languages
Result language
angličtina
Original language name
CFRP-based structural repairing and strengthening of deficient cast-in-place RC foundation-column joints
Original language description
The foundation-column joint (FCJ) is a critical structural component in moment-resisting reinforced concrete (RC) frames. Field observations from recent seismic events have shown that exterior or corner cast-in-place RC FCJs without transverse reinforcement were prone to damage, impairing the seismic performance of the entire structural system. Such joints, commonly found in Turkey and other seismically active regions with inadequate construction and inspection practices, experienced concrete cover crushing, followed by buckling of the longitudinal reinforcement. This study investigated the cyclic response of a deficient and carbon fiber-reinforced polymer (CFRP)-strengthened exterior RC FCJ, along with the repair of a pre-damaged FCJ using CFRP, through a combined experimental and numerical approach. A code-compliant FCJ with proper transverse reinforcement was also tested as a reference, which primarily exhibited a flexural hinge at the column base. The deficient FCJ exhibited failure due to concrete crushing and longitudinal bar buckling within the foundation panel-consistent with post-earthquake field evidence. CFRP repair of the pre-damaged FCJ effectively mitigated further panel deterioration. Additionally, the CFRP strengthening scheme applied prior to damage significantly improved both the strength and displacement capacities of the deficient FCJ, outperforming even the codecompliant specimen. The results confirmed that CFRP application to joint panel was highly effective in enhancing the cyclic performance of exterior FCJs lacking transverse reinforcement.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Engineering Structures
ISSN
0141-0296
e-ISSN
1873-7323
Volume of the periodical
343
Issue of the periodical within the volume
15 November 2025
Country of publishing house
GB - UNITED KINGDOM
Number of pages
17
Pages from-to
121236
UT code for WoS article
001565261300005
EID of the result in the Scopus database
2-s2.0-105014731333