关于门式刚架斜梁平面外计算长度的探讨  

DISCUSSION ON THE LATERAL EFFECTIVE LENGTH OF BEAM IN PORTAL FRAME

作　　者：付占明[1] 

机构地区：[1]东北大学设计研究院建筑分院,沈阳110004

出　　处：《钢结构》2010年第1期31-33,共3页Steel Construction

摘　　要：门式刚架中梁的平面外计算长度,在现行规程中无明确规定。对梁平面外计算长度的几种取法进行简单回顾,认为屋面横向支撑的相应位置应设置系杆,不宜用檩条兼作系杆;斜梁的平面外计算长度宜取屋面横向支撑间的长度。There are no items for the lateral effective length of the beam in portal frame in current：specifications. Retrospective analysis is made in this paper about some measures for lateral effective length of, the beam. It is considered that tie bars should be erected in corresponding positions of roof lateral braces, a purlin,is not suitable to be a tie bar at the same time; and the lateral effective length of the beam should be the： length between the lateral braces of the roof.

关 键 词：门式刚架 平面外计算长度 弯扭屈曲 隅撑 

分 类 号：TU392.5[建筑科学—结构工程]