异形框架结构设计研究

异形框架结构是在普通框架结构基础上发展起来的结构体系,通过加设边缘构件(边缘壁柱和边缘壁梁),提高框架柱、框架梁及框架节点区的刚度,从而提高结构整体抗侧刚度和耗震能力,与框架结构、框剪结构结合起来形成异形框架-框架结构、异形框架-框剪结构等。异形框架结构可以有效解决纯框架结构位移不满足规范要求,框剪结构中剪力墙数量偏少时位移不满足规范要求,或者结构扭转情况比较严重等问题。分析了异形框架结构的整体变形和受力特点,提出了异形框架结构在地震作用下的屈服顺序,增加了框架和框剪结构的抗震防线。

STUDY ON STRUCTURAL DESIGN OF SPECIAL-SHAPED FRAME

A special-shaped frame structure system is developed based on common frame structures. By setting fringe component on the structure, the stiffnesses of frame column, beam and beam-column joint are increased, and therefore the whole stiffness of frame structure is also enhanced. It includes special-shaped frame-frame structure, special-shaped frame-shear wall structure, etc. It can solve the shortage in displecement of simple frame structure or frame shear-wall structure effectively, and adjust the plane rotation. The whole distortion and bearing of special-shaped frame structure are analyzed, and yielding order of component is brought forth, which can increase the line number of earthquake defense.