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가훈(Ka Hoon),임성순(Yhim Seong Sun),서기홍(Seo Ki Hong) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Thin-walled cross section has light self-weight, more superior bending stiffness and torsional stiffness than others. So the usage of thin-walled cross section is increasing as a structure of long span bridges. The Behavior of thin-walled structures subjected to eccentric loads is such that bending and torsion will occur. So their structural characteristic is that in-plan behaviour and out-of behaviour are coupled with each other. In this sturdy, considering a thin thickness of thin-walled cross section, the beam element with shear deformation is developed. According to change of cross-section's dimensions, the effect of shear deformation on thin-walled beams is analyzed.
가훈 ( Ka Hoon ),임성순 ( Yhim Seong Sun ),서기홍 ( Seo Ki Hong ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.1
Thin-walled cross section has light self-weight, more superior bending stiffness and torsional stiffness than others. So the usage of thin-walled cross section is increasing as a structure of long span bridges. The Behavior of thin-walled structures subjected to eccentric loads is such that bending and torsion will occur. So their structural characteristic is that in-plan behaviour and out-of behaviour are coupled with each other. In this sturdy, considering a thin thickness of thin-walled cross section, the beam element with shear deformation is developed. According to change of cross-section's dimensions, the effect of shear deformation on thin-walled beams is analyzed.
FRP시트로 보강된 프리플렉스 거더의 휨성능에 대한 해석적 연구
가훈 ( Ka Hoon ),최진우 ( Choi Jin-woo ),김영호 ( Kim Young-ho ),박종면 ( Park Jong-myen ) 한국복합신소재구조학회 2021 복합신소재구조학회논문집 Vol.12 No.3
국내 노후교량에 대한 보강은 지속적으로 증가하고 있으며, FRP 보강재에 대한 관심 또한 증가하고 있다. 이 논문에서는 ACI Committee 440를 참고하여, 프리플렉스 거더의 FRP 보강재 적용을 위한 설계식을 제안하였다. 또한, 프리플렉스 거더의 FRP 보강재 적용 특성을 설계예제를 통해 제시하였다. 설계 결과를 통해, FRP 보강재는 사용성 측면에서 우수한 휨보강 효과를 나타내었다. Reinforcement of deteriorated bridges in Korea is constantly increasing; thus, interest in FRP reinforcement has also increased. In this paper, design formulas, which were referred from ACI Committee 440 with respect to the application of FRP reinforcements to preflex girders, were proposed. In addition, the FRP-reinforcement characteristics of preflex girders were reviewed using design examples. The design results revealed that the FRP reinforcement demonstrated excellent performance in terms of flexural-reinforcement effect against cracks that occurred in the concrete casing of preflex girders and corrosion of rebars.