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Shear design of RC members strengthened with steel reinforcing bars embedded through section
Highlights A new design approach is developed in this paper based on the Modified Compression Field Theory. The design method accounts for the bond characteristics of steel bars embedded through the section and the influence of crack width and aggregate interlock. The proposed design approach applies to reinforced concrete members with and without stirrups strengthened with steel reinforcing bars embedded through the section. The results were validated with 57 specimens from the literature and the proposed approach provides good predictions suitable for design.
Abstract The shear strengthening technique investigated in this paper consists of inserting steel reinforcing bars into holes drilled into a shear-deficient existing concrete member and bonding these bars to the concrete with high-strength epoxy adhesive. It is important to realize that current shear design methods are applicable to RC members with conventional stirrups and hence overestimate the shear capacity of members with epoxy-bonded bars. In order to overcome this difficulty, a shear design method for RC members strengthened with epoxy-bonded shear reinforcement is presented. The proposed method was developed considering the development of epoxy-bonded bars as well as the effect of crack width and aggregate interlock on shear capacity. The predicted shear capacities were compared with beam test results and provide accurate predictions.
Shear design of RC members strengthened with steel reinforcing bars embedded through section
Highlights A new design approach is developed in this paper based on the Modified Compression Field Theory. The design method accounts for the bond characteristics of steel bars embedded through the section and the influence of crack width and aggregate interlock. The proposed design approach applies to reinforced concrete members with and without stirrups strengthened with steel reinforcing bars embedded through the section. The results were validated with 57 specimens from the literature and the proposed approach provides good predictions suitable for design.
Abstract The shear strengthening technique investigated in this paper consists of inserting steel reinforcing bars into holes drilled into a shear-deficient existing concrete member and bonding these bars to the concrete with high-strength epoxy adhesive. It is important to realize that current shear design methods are applicable to RC members with conventional stirrups and hence overestimate the shear capacity of members with epoxy-bonded bars. In order to overcome this difficulty, a shear design method for RC members strengthened with epoxy-bonded shear reinforcement is presented. The proposed method was developed considering the development of epoxy-bonded bars as well as the effect of crack width and aggregate interlock on shear capacity. The predicted shear capacities were compared with beam test results and provide accurate predictions.
Shear design of RC members strengthened with steel reinforcing bars embedded through section
Fiset, M. (author) / Bastien, J. (author) / Mitchell, D. (author)
Engineering Structures ; 285
2023-03-23
Article (Journal)
Electronic Resource
English
| BASE | 2014