直板楼梯与折板楼梯对框架结构刚度的不同影响

研究了直板楼梯和折板楼梯对框架结构刚度的不同影响,建立了独立框架单元和整体框架两种分析模型,分别比较了无楼梯、直板楼梯、缓台板布置在楼层处的折板楼梯和缓台板布置在中间平台处的折板楼梯四种情况在相同受力情况下横向和纵向的楼层水平位移,通过比较四种情况下楼层的水平位移,得到了三种不同形式的楼梯对框架结构刚度的影响,结果表明,缓台板布置在中间平台处的折板楼梯对整体框架结构刚度的影响比直板楼梯小.

Analysis of the Different Impacts of Straight Board Stairs and Fold Board Stairs on Frame Structure Stiffness

This paper studies the different impacts of frame structure stiffness on straight board stairs and fold board stairs. It also constructs two analysis models of the independent framework unit and the overall framework. This paper analyzes the horizontal floor displacements of four kinds of frames in horizontal and vertical direction under the same force, which include frame without stairs, frame with straight stairs, frame with fold board stairs whose slow bedplate is located in the floor place, frame with fold board stairs whose slow bedplate is located in the middle platform. Through comparing the four displacements, this paper gets the impacts of the stairs with three different forms on frame structure stiffness. The result shows that the impact of fold board stairs whose slow bedplate is located in the middle platform on the whole frame structure is smaller than the impact of straight stairs.