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April 30, 2026Journal of the Korea Concrete Institute

Analysis of Seismic Performance Enhancement Effects of Externally Attached Seismic Retrofit Methods Based on Foundation Joint Status

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Key Points

This research aims to evaluate the seismic enhancement effects of externally attached CFT methods based on different foundation joint conditions.
Constructed a 2-story RC frame model for testing
Conducted repeated load tests to assess performance
Analyzed the impact of external CFT retrofits on shear failure and load distribution
Maximum load increased by approximately 1.47 to 1.61 times for specimens with jointed foundations compared to control
Shear failure consistently occurred at the lower columns of the first floor
Existing column damage was delayed due to effective load sharing by CFT retrofitting, reducing deformation requirements

Implication

Evaluates seismic performance enhancements in RC structures, indicating crucial foundation joint effects.

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Cite This Study

Moo-won Heo (2026) studied this question.

synapsesocial.com/papers/6a0021fec8f74e3340f9cf4b https://doi.org/10.4334/jkci.2026.38.2.203

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Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1Integrated Seismic Retrofit Strategy Using an External RC Exoskeleton: Section-Cut-Based Force Transfer Assessment and Connection Typology AnalysisOriginal Research · 2026
2Cyclic Performance Evaluation and Retrofitting of Coupling Double-Beam Constructed with Reinforced and Fiber-Reinforced Concrete: An Experimental and Numerical StudyOriginal Research · 2026
3Seismic performance of externally stiffened ring connections between concrete-filled steel tubular columns and reinforced concrete beamsOriginal Research · 2026
4Experimental and Numerical Studies on the Seismic Performance of Joints Between Steel Beams and Concrete‐Filled Steel Tubular Flat Columns2025
5Retrofitting seismically designed exterior beam-column joints under lateral monotonic loading: A numerical analysis based on experimental testing2024 · 2 citations

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