Seismic performance of RC frame structures strengthened by HPFRCC walls

Hyun Do Yun, Jin Ha Hwang, Mee Yeon Kim, Seung Ho Choi, Wan Shin Park, Kang Su Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


An infill wall made of high-performance fiber-reinforced cementitious composites (HPFRCC) was utilized in this study to strengthen the reinforced concrete (RC) frame structures that had not been designed for seismic loads. The seismic performance of the RC frame structures strengthened by the HPFRCC infill walls was investigated through the experimental tests, and the test results showed that they have improved strength and deformation capabilities compared to that strengthened by the RC infill wall. A simple numerical modeling method, called the modified longitudinal and diagonal line element model (LDLEM), was introduced to consider the seismic strengthening effect of the infill walls, in which a section aggregator approach was also utilized to reflect the effect of shear in the column members of the RC frames. The proposed model showed accurate estimations on the strength, stiffness, and failure modes of the test specimens strengthened by the infill walls with and without fibers.

Original languageEnglish
Pages (from-to)389-399
Number of pages11
JournalStructural Engineering and Mechanics
Issue number3
StatePublished - 10 Aug 2020


  • Infill wall
  • Seismic performance
  • Shear wall


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