直板楼梯与折板楼梯对框架结构刚度的不同影响
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摘要
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.
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.
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.
引文
[1]沈靓,张瑜中,吴季柏,等.框架楼梯参与结构抗侧体系工作的有限元分析[J],抗震研究,2010,24(1):77-79.
[2]王志明.折板楼梯的施工放线[J].建筑工人,1995,5:45-49.
[3]陈宗臣,张保,张涛.由汶川地震中楼梯破坏引起的思考[J].工程质量,2009,27(5):73-74.
[4]张望喜,易伟建,肖岩,等.“5.12”汶川地震灾区典型教学楼框架与楼梯共同工作性能[J].建筑科学与工程学报,2009,26(2):38-45.
[5]曹万林,庞国新,李云霄.带楼梯框架弹性层刚度的试验研究[J].世界地震工程,1996,2:29-32.
[6]曹万林,胡国振,周明杰,等.钢筋砼框架与楼梯共同工作性能试验研究[J].工程力学,1999,2(增刊):23-26.
[2]王志明.折板楼梯的施工放线[J].建筑工人,1995,5:45-49.
[3]陈宗臣,张保,张涛.由汶川地震中楼梯破坏引起的思考[J].工程质量,2009,27(5):73-74.
[4]张望喜,易伟建,肖岩,等.“5.12”汶川地震灾区典型教学楼框架与楼梯共同工作性能[J].建筑科学与工程学报,2009,26(2):38-45.
[5]曹万林,庞国新,李云霄.带楼梯框架弹性层刚度的试验研究[J].世界地震工程,1996,2:29-32.
[6]曹万林,胡国振,周明杰,等.钢筋砼框架与楼梯共同工作性能试验研究[J].工程力学,1999,2(增刊):23-26.
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