单箱双室钢箱梁弯桥设计与分析

Design and Analysis of Single-box Double-chamber Steel Box Girder Curved Bridge

城市互通及交通枢纽区受地面道路及地下空间影响,其匝道桥往往是小半径大跨度,目前一般采用钢箱梁结构形式。结合实际工程设计案例,从构造措施及计算分析进行详细阐述。该钢箱梁特点是双室斜腹式,顶底板加劲肋为板式,腹板仅设置横向加劲肋,该项目结构设计合理、可靠,可为同类工程提供参考和借鉴。

The urban interconnection and transportation hub area is affected by the ground roads and underground space. Its ramp bridges tend to be small in radius and long in span. At present, the steel box girder structure is generally adopted. Combined with the practical engineering designs, this paper sets forth it from the structural measures and calculation analysis in detail. The characteristics of this steel box girder are the double-chamber oblique abdomen type, the top and bottom stiffening ribs in plate type, and the web only set with transverse stiffening ribs. The structural design of this project is reasonable and reliable, which can be referred for the similar projects.