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Abstract

This paper presents results of an experimental study on a method for repairing earthquake damaged reinforced concrete columns that have inadequate lap splices in longitudinal reinforcement, by the use of stainless steel wire mesh (SSWM) composites. A total of three 1/5 scale model columns were tested under reversed cyclic loading. The columns were then repaired with SSWM composite wraps and re-tested under simulated earthquake loading to validate the effectiveness of the SSWM composite system and to study the feasibility of the repairing method for damaged columns. The results of this study show that the flexural strength, the displacement ductility, and the energy dissipation of the repaired columns were higher than those of the original columns. This indicates that the SSWM composite wraps can be a highly effective repair measure for reinforced concrete columns that have inadequate lap splices.

Keywords

stainless steel wire mesh earthquake damaged column composite wrap displacement ductility energy dissipation

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References

Chai

Y.H.

Priestley

M.J.N.

and Seible

(1991). “Seismic retrofit of circular columns for enhanced flexural performance”, ACI Structural Journal, Vol. 88, No. 5, pp. 572–584.

Choi

J.H.

(2008). “Seismic retrofit of reinforced concrete circular columns using stainless steel wire mesh composite”, Canadian Journal of Civil Engineering, Vol. 35, No. 2, pp. 140–147.

and Xiao

(1999). “Seismic retrofit and repair of circular bridge columns with advanced composite materials”, Earthquake Spectral, Vol. 15, No. 4. Nov. pp. 747–764.

Saadatmanesh

Ehsani

M.R.

and Li

M.W.

(1994). “Strength and ductility of concrete columns externally reinforced with fiber composite straps”, ACI Structural Journal, Vol. 15, No. 4, pp. 747–764.

Saadatmanesh

Ehsani

M.R.

and Limin

(1997). “Repair of earthquake-damaged RC columns with FRP wraps”, ACI Structural Journal, Vol. 94, No. 2, pp. 206–215.

Priestley

M.J.N.

and Park

(1987). “Strength and ductility of concrete bridge columns under seismic loading”, ACI Structural Journal, Vol. 84, No. 1, pp. 61–76.

Xiao

and Ma

(1997). “Seismic retrofit of RC circular columns using prefabricated composite jacketing”, Journal of Structural Engineering, ASCE, Vol. 123, No. 10, pp. 1357–1364.

L.P.

Zhang

Zhao

S.H.

and Feng

(2003). “Experimental study on seismic strengthening of RC columns with wrapped CFRP sheets”, Constructional and Building Materials, Vol. 17, No. 6–7, pp. 499–506.

Marsh

(1992). “Seismic retrofits for R/C column bar splices”, Proceedings of the 1992 Structures Congress, ASCE, San Antonio, Texas, April, pp. 13–15.

10.

Matsuda

Sato

Fujiwara

and Higashira

(1990). “Effect of carbon fiber reinforcement as a strengthening measure for reinforced concrete bridge piers”, Proceedings of the First U.S-Japan Workshop on Seismic Retrofit of Bridges, Public Works Research Institute, Ministry of Construction, Tsukuba Science City, Japan, December, pp. 17–18.

Repair of Earthquake Damaged RC Columns with Stainless Steel Wire Mesh Composite

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