Effect of beam elongation phenomenon on lateral load resistance of RC frame

Jae Hyun Kim, Seung Ho Choi, Sun Jin Han, Jin Ha Hwang, Hoseong Jeong, Kang Su Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In this study, a quasi-static cyclic loading test was conducted on a two-span reinforced concrete frame to investigate the beam elongation phenomenon. The load–drift ratio responses and failure modes of the test specimens were examined, and the local response of the column members was analyzed to calculate the force and displacement caused by beam elongation. Based on the results, constitutive equations representing the beam elongation phenomenon were derived, and the design implications were proposed for the criteria of the beam-column strength ratio and joint shear strength presented in the ACI 318–19 code. The proposed design implications were found to accurately simulate the experimental results.

Original languageEnglish
Article number105764
JournalJournal of Building Engineering
StatePublished - 15 Apr 2023


  • Beam elongation
  • Quasi-static cyclic loading test
  • Reinforced concrete
  • Structural design
  • Two-bay frame


Dive into the research topics of 'Effect of beam elongation phenomenon on lateral load resistance of RC frame'. Together they form a unique fingerprint.

Cite this