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与目前的设计准则不同,将格构柱假定为超静定结构,可确定其长细比。解决格构楼屈曲问题一方面是利用大家就知的压杆长细比与临界荷载关系,另一方面,利用格构柱长细比与缀件刚度和缀材节点将格构柱肢件分成的节间段数的函数关系。得到的具有不同节间段数的格构柱长细比曲线相互间能区分,因此,不管节间段数为多少,修正长细比由缀件刚度唯一确定。通过相应于固定节间数的包络曲线,建立此关系。可根据格构柱的修正长细比,设计型钢格构柱。
Different from the current design criteria, the lattice is assumed to be statically indeterminate, and its slenderness ratio can be determined. On the one hand, the problem of buckling of lattice structure floor is solved by the use of the slenderness ratio and the critical load relationship of everybody. On the other hand, the lattice structure of the lattice structure is divided into The number of internode function. The slenderness curves of the lattice columns with different internode sections can be distinguished from each other. Therefore, the slenderness ratio is uniquely determined by the stiffener stiffness, no matter how many internodes are. This relationship is established by the envelope curve corresponding to the number of fixed internals. According to the modified slender column slenderness, design steel lattice column.