(西安建筑科技大学 710055)
【提要】 框架在风荷载及竖向荷载共同作用下，由于框架产生侧移变形从而引起侧移二阶效应。为了简化分析，给出了梁、柱刚度的统一的折减系数，对弹性阶段和极限阶段框架侧移二阶效应进行了分析和比较，结果表明在框架设计中应当考虑侧移二阶效应。
【关键词】 框架 风荷载 竖向荷载 二阶效应 极限阶段
Sidesway Secondorder Effect of Frame Under the Action of Wind and Vertical Loads/Tong Shenjia,Tong Yuesheng(Xi'an University of Architecture & Technology,Xi'an 710055,China)Abstract:Under the action of wind and vertical loads,the frame deforms laterally and thus the sidesway secondorder effect is produced.This effect is analysed,and the results show that the sidesway secondorder effect should be considered in design.
Keywords:frame；wind load; vertical load; secondorder effect; limit state