| Title |
Effects of Flexural Rigidity of Center Tower in Four-Span Suspension Bridges |
| Authors |
권순길(Gwon, Sun-Gil) ; 유훈(Yoo, Hoon) ; 최동호(Choi, Dong-Ho) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.1.0049 |
| Keywords |
4경간 현수교;처짐이론;케이블 적합방정식;주탑 휨강성;케이블 슬립안전율 Four-span suspension bridge;Deflection theory;Compatibility equation of cable;Flexural rigidity of tower;Slip safety of cable |
| Abstract |
Reinforced concrete (RC) structures strengthened with FRP materials would cause the loss of the reinforcing effect and the sudden failure of the structure due to the debonding of FRP. The debonding fracture strength of the FRP-strengthened concrete structures has been evaluated using the same strength method as applied in RC structures based on the debonding strain of FRP. However, the values of the FRP debonding strain are different according to design guidelines. Thus, this study carried out an experimental study on RC beams reinforced with GFRP and evaluated the debonding fracture strength of the strengthened beams from each design guideline. Since the debonding failure occurs prior to reaching the ultimate value of concrete compressive strain, this study accounts for the nonlinear stress distribution of concrete. This study also proposed equations that can evaluate the debonding strength of GFRP-strengthened RC beams with similar safety to the ultimate flexural strength of non-strengthened RC beams. |