The torsion and warping of curved clat steel box girders for steel arch bridge with unsymmetrical outward inclined ribs were discussed.

• 以正在设计中的非对称外倾式钢箱拱肋扁平钢箱弯主梁结构形式的异型钢拱桥为背景,采用空间杆系模型对该桥进行恒载和活载作用下扁平钢箱主梁的扭转与翘曲受力特性分析;