사장교의 내풍해석을 통한 인명보호 구조물의 내하능력평가 = Load-carrying Capacities of Safety Structures on Wind-resistant Analyses of Cable-stayed Bridge

다국어 초록 (Multilingual Abstract)

In the 2000s, a lot of cable-type grand bridges are being built in consideration of economic aspects such as the reduction of logistics costs and the distribution of traffic volume due to rapid economic development. In addition, because the recently installed grand bridges are designed in an aesthetic form that matches the surrounding environment as well as the original function of the road bridge, and serves as a milestone in an area and is used as an excellent tourism resource, attracting many vehicles and people, there is an urgent need for a safety structure that can ensure the safety of not only vehicles but also people. In order to make cable-stayed bridge safe on wind for additional five safety structures, main girder models with and without safety structures for wind-tunnel experiments was made, and wind tunnel experiments was carried out to measure aerodynamic force coefficients. Also, wind-resistant analyses of 3D cable-stayed bridge were performed on the basis of wind-tunnel experiment results. From the wind tunnel experiments for the aerodynamic force coefficients of main girder with five safety structures and the wind resistant analyses of cable-stayed bridge without safety structure and with safety structure, it was concluded that the best form of wind-resistant safety was shown in the order of mesh, standard, bracing, hollow, and closed type. And wind-resistant safety of cable-stayed bridge with hollow and closed type on design wind speed 68.0m/sec was not secured. Finally, as five safety structures are installed, maximum rate of stress increments was shown in the order of steel main beam, steel floor beam, concrete floor beam and cables.

참고문헌 (Reference)

1 허택녕, "풍동실험을 통한 사장교의 내풍 안전성 검토" 한국산업융합학회 23 (23): 637-644, 2020

2 김종일, "재하실험을 통한 사장교의 3차원 동적거동에 관한 연구" 창원대학교 산업정보대학원 2008

3 한국도로교통협회, "도로교 설계기준"

4 변상균, "3차원 사장교의 효율적인 유지관리를 위한 관리한계 기준의 설정" 창원대학교 대학원 2009