Retrofit of concrete columns with inadequate lap splices by the use of rectangular steel jackets

Riyad S. Aboutaha, Michael U. Engelhardt, James O. Jirsa, Michael F. Kreger

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

This paper describes an experimental research program on the use of rectangular steel jackets for seismic retrofit of non-ductile reinforced concrete frame columns. Eleven large scale columns were tested to examine the effectiveness of various types of steel jackets for improving the ductility and strength of columns with an inadequate lap splice in the longitudinal reinforcement. Response of the columns before and after being strengthened with steel jackets was examined. Several types of steel jackets were investigated, including rectangular solid steel jackets with and without adhesive anchor bolts. The test results indicate that a thin rectangular steel jacket combined with adhesive anchor bolts can be a highly effective retrofit measure for reinforced concrete columns with an inadequate lap splice. Design guidelines for the use of rectangular steel jackets as a seismic retrofit for non-ductile reinforced concrete columns are presented.

Original languageEnglish (US)
Pages (from-to)693-714
Number of pages22
JournalEarthquake Spectra
Volume12
Issue number4
DOIs
StatePublished - Jan 1 1996
Externally publishedYes

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

Fingerprint Dive into the research topics of 'Retrofit of concrete columns with inadequate lap splices by the use of rectangular steel jackets'. Together they form a unique fingerprint.

  • Cite this