鋼箱桁 曲線橋의 解析

Abstract

1960年 以來 美國, 유럽, 日本 等地에서는 鋼箱桁 曲線橋의 架設이 急增하고 있는데, 이는 箱形 自體의 斷面이 비틀림과 warping에 有效하게 저항하는 구조로 되어 있기 때문이다.

本 硏究에서는 半徑方向端에서 단순 지지된 橋梁을 上.下 슬랩은 水平 圓形의 扇形板으로, 벽은 수직원통 쉘요소로 이상화하여 扇形板의 內部의 面內應力, 固定端力, 휨 모멘트 등을 變位法으로 解析했다.

The number of curved steel box-girder bridges constructed has been increasing in recent years. Interest has been generated in the use of curved steel box-bridges are assumed to be simply supported along the radial edges, and the top and bottom slabs are idealized as horizontal circular sector plates, and the walls of the box-girder represented as vertical cylindrical shell elements.

The analysis is given for determining membrane stress, fixed edge forces, and bending moments at interior point of sector plate elements by the stiffness method.

The number of curved steel box-girder bridges constructed has been increasing in recent years. Interest has been generated in the use of curved steel box-bridges are assumed to be simply supported along the radial edges, and the top and bottom slabs are idealized as horizontal circular sector plates, and the walls of the box-girder represented as vertical cylindrical shell elements.

The analysis is given for determining membrane stress, fixed edge forces, and bending moments at interior point of sector plate elements by the stiffness method.