Experimental study on seismic behavior of reinforced concrete frame in primary and middle schools with different strengthening methods

Bo Hu, Heng Lin Lv, Tribikram Kundu

Research output: Contribution to journalArticle

Abstract

Due to inadequate lateral stiffness and insufficient structural redundancy, many single-span reinforced concrete (RC) frames were highly damaged or collapsed in previous earthquakes. This paper presents an experimental study on seismic performance of rehabilitated single-span RC frames. Four frames were strengthened using various retrofitting strategies and one non-retrofitted frame served as the reference specimen. All these frames were fabricated and tested under cyclic loadings. The failure modes, hysteretic behavior, skeleton curve, energy dissipation, strength and stiffness degradation of each frame were evaluated. The validity of different strengthening methods for improving frames’ failure mechanisms and seismic performances was verified. Test results indicated that strength, stiffness, as well as many seismic characteristics of the strengthened frames were improved substantially.

Original languageEnglish (US)
Pages (from-to)473-486
Number of pages14
JournalConstruction and Building Materials
Volume217
DOIs
StatePublished - Aug 30 2019

    Fingerprint

Keywords

  • Ductility
  • Exterior cantilever frame
  • Retrofitting
  • Seismic performance
  • Strengthening

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this