悬挂式楼梯参与框架结构整体空间受力的计算分析  

Calculation and analysis on the space force of frame structure with suspended stairs

作　　者：孙传智[1,2] 李爱群[1,2] 缪长青[1,2] 乔燕[3] 

机构地区：[1]东南大学土木工程学院,南京210096 [2]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096 [3]宿迁学院建筑工程系,宿迁223800

出　　处：《建筑结构》2013年第1期41-43,53,共4页Building Structure

摘　　要：《建筑抗震设计规范》(GB 50011—2010)第3.6.6条规定在进行结构设计时,应考虑楼梯构件的影响。其实质就是通过"抗"来减小地震对构件的影响。根据悬挂式结构受力特点,提出一种新的楼梯受力体系,并利用有限元软件采用时程分析法进行计算,分析比较了普通楼梯和悬挂式楼梯对框架结构整体空间受力的影响。研究结果表明,悬挂式楼梯框架结构的周期与振型相比较普通楼梯框架结构有明显改善,能够明显降低楼梯梁、楼梯板及楼梯间附近框架柱的受力,保证结构构件在地震作用下的安全。Provision 3.6.6 in Code for seismic design of buildings（GB 50011—2010） stipulates that the stair should be considered during the structural design.The essence of this provision is to reduce the impact of earthquakes on structures through the method of ＂resistance＂.A new force system of the structure with suspended stairs was proposed based on characteristics force of suspended structure and the finite element method was used to analyze the overall force impact of frame structure with common stairs and suspended stairs using the method of time history analysis.The results show that suspended stairs can significantly improve the period and mode of frame structure compared with the case of common stairs,and significantly reduce the force of stair beams,stair slabs and columns near staircases.The above can ensure the safety of structure under earthquake.

关 键 词：悬挂式楼梯 框架结构 空间受力 动力特性 

分 类 号：TU375.4[建筑科学—结构工程]