【作者】 唐元丽；

【导师】 彭伟；

【作者基本信息】 西南交通大学 ， 结构工程， 2011， 硕士

【摘要】 目前,在国内的现行结构设计中,不同结构体系,如砌体结构、框架结构或剪力‘墙结构等结构计算分析时,并未考虑楼梯结构对整体结构抗震性能的影响,设计中对楼梯结构进行了相应的简化处理。在结构设计中,对整体结构进行内力计算分析与配筋时,仅将楼梯处楼板开洞,将楼梯构件的竖向荷载折算加到框架梁、柱或墙上,而未将楼梯的构件作为整体结构的一部分参与计算分析,只是单独地对楼梯进行构件计算与配筋。在框架结构的楼梯间处,楼梯能起斜撑作用,这可以增加主体结构的刚度,从而增加层间剪力,减小结构的侧移。但会增大楼梯间附近框架构件的内力,使得地震时这些构件容易破坏。楼梯间构件的内力考虑地震时比不考虑地震时要大很多。基于以上原因,本文严格按照相关规范设计了六个钢筋混凝土框架结构,然后使用国际上通用的结构分析软件SAP2000对这些结构进行在多遇和罕遇地震下的抗震性能进行计算分析。本文做的主要工作包括：(1)对比了不同的楼梯布置位置和框架平面不同时,楼梯结构对框架结构的影响；(2)对比了板式楼梯结构在考虑地震作用与不考虑地震作用时,各个楼梯构件内力的变化；(3)对六个框架结构在罕遇地震作用下的整体受力及变形进行分析；(4)对现行的设有楼梯的框架结构给出了考虑楼梯作用的框架结构的设计方法的建议。更多还原

【Abstract】 Currently,the existing structural design of different structural systems, such as masonry structure,frame structure and wall structure,don’t consider the staircase’ impact and the seismic design of staircase. The designing analysis and calculation of staircase structure is simplified. The structural design punches hole in the floor slab of staircase and apply the vertical load of staircase to the beams aroud. The staircase components is calculated individually.In the frame structure,the staircase works as the role of diagonal bracing, which can increase the stiffness of the main structure,shear force of story, and reduce the frame structure’s lateral displacement. The staircase will increase the internal forces of surrounding frame components. Under the earthquake,the internal forces of staircase components are increased significantly.Based on these two points,this paper designs six reinforced concrete frame structures according to the codes. And then it comes to take the staircase structure into calculation and analysis under frequent earthquakes and rare eathquakes.This paper’ main tasks include:(1)To compare the different influence of staircase structures on frame structure,when the location of staircase structures and layout of the frame structures is different.(2)To compare the internal forces’changes of structure’s components,under or free from earthquakes.(3)To analyze,under rare eathquakes,the overalll forces and lateral displacement of six frame structures.(4)To propose some suggestions on the current design methods of staircases,and of the staircase-considered frame structures.更多还原