| Title |
Optimal and Serviceability Design of CFRP-Reinforced Concrete Sections Using Harmony Search Algorithm |
| Authors |
박연준(Park, Yeon Jun );박성현(Park, Seong Hyeon);윤현웅(Yoon, Hyeon woong);장낙섭(Jang, Nag Seop);오홍섭(Oh, Hong Seob) |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.1.0051 |
| Keywords |
CFRP; 하모니서치; 최적화 설계; 다목적 함수; 사용성 설계 |
| Abstract |
Corrosion of rebar can reduce the safety and durability of structures, and various studies on FRP(Fiber Reinforced Polymer) Rebar reinforced concrete are being conducted to use it as a substitute for rebar. In this study, the Harmony Search algorithm was used for the optimal design of the CFRP Rebar reinforced concrete section, and the optimal section satisfying the minimum cost and deflection conditions was derived through the ACI 440.1R-15 example model. For comparison purposes, both single-objective and multi-objective optimization were performed, and the results from each optimization showed differences. The single-objective optimization resulted in extreme cross-sectional designs that prioritized either cost or deflection. To mitigate this issue and account for structural uncertainties, a multi-objective optimization was performed, considering both cost and deflection as objectives. The single-objective Harmony Search algorithm showed a trade-off between cost and deflection. However, the multi-objective Harmony Search algorithm showed that the Pareto front was uniformly distributed. A section that balances the minimum cost and minimum deflection was derived, and both the cost and deflection were low when the parameters HMCR=0.7 and PAR=0.3 were set. |