The paper analyzes the end bearing restraint conditions for the common bracing forms in the steel flue support design,points out the respective bracing calculation length coefficient by combining with regulations,and indicates the threshold stiffness requirements when the steel beams are regarded as the loading points for V-shaped bracing and off-centered bracing no-sway buckling according to the features of the steel flue support.%分析了钢烟道支架设计中常用的支撑形式的端支承约束条件，并结合规范给出了相应的支撑计算长度系数，针对钢烟道支架横梁的特点，提出了钢横梁作为V型支撑和偏离中心支撑无侧移失稳的支承点的门槛刚度要求。
展开▼
