수평곡선보의 단면회전구속

다국어 초록 (Multilingual Abstract)

Horizontally curved girders exhibit very weak stiffnesses as compared to straight girders. The initial curvature induces rigid body motion in the displacement field, thus resulting in large displacements when the curved girder is subjected to vertically applied loads. Lateral supports are known to reinforce the weak stiffnesses. This concept is mostly based on an engineering intuition not on analytical results except a few old studies. An finite element analysis, developed by Kang and Yoo, was extensively used to study the behavior of horizontally curved I-girders. A special emphasis was placed on the reinforcing effect of lateral supports on displacements and internal forces. Also investigated is the effective spacing of lateral supports.