Seismic Retrofit of R/C Columns with Inadequate Lap Splices

by R. S. Aboutaha, (S.M.ASCE), Univ of Texas, Austin, United States,
M. D. Engelhardt, (M.ASCE), Univ of Texas, Austin, United States,
J. O. Jirsa, (M.ASCE), Univ of Texas, Austin, United States,
M. E. Kreger, (M.ASCE), Univ of Texas, Austin, United States,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

This paper presents experimental results on the use of rectangular steel jackets to improve the seismic performance of rectangular steel jackets to improve the seismic performance of rectangular reinforced concrete columns with an inadequate splice. Four full-scale cantilever column specimens with poorly confined short splices were tested under cyclic lateral force. The unretrofitted column showed an early dramatic failure. However, the column strengthened with a steel jacket of adequate length and with well distributed adhesive anchor bolts showed excellent performance.

Subject Headings: Steel columns | Reinforced concrete | Seismic tests | Seismic effects | Lateral forces | Failure analysis | Steel structures

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