Interface slip model for reinforced concrete columns strengthened with concrete jacketing
Yükleniyor...
Dosyalar
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pontificia Universidad Catolica de Chile
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Retrofit and strengthening of columns can be an effective solution to improve the capacity of reinforced concrete (RC) structures when the structural details and strength are insufficient to resist extreme loads. When concrete jacketing is used by enlarging the existing RC column cross section, the main concern is the performance loss between new and old concrete due to potential interface slip. There are three major options to improve slip resistance at the interface including surface roughening, dowels, or both. In this study, these methods are evaluated and parameters are proposed to model the load transfer along the interface between the existing and new concrete. The response of reinforced concrete jacketed columns is simulated using the proposed numerical models. The effectiveness and need for surface roughening, dowels, or their combination are investigated. A slip coefficient is proposed to model the friction between new and old concrete materials based on comparison of the experimental data and numerical simulations.
Açıklama
Anahtar Kelimeler
Concrete Structures, Column Retrofit, Finite Element Method, Bond Slip
Kaynak
Revista de la Construccion
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
19
Sayı
2
Künye
Cağlar, N., Sichko, A., Sezen, H., Biçiçi, E., Demir, A., & Farah, A. F. (2020). Interface slip model for reinforced concrete columns strengthened with concrete jacketing. Revista de la Construccion, 19(2), 180-189. DOİ:10.7764/RDLC.19.2.180.
