文档介绍：摘要摘要楼梯是十分重要的垂直交通通道。在地震作用下,楼梯的破坏比较严重,在一定程度上阻碍了人们的逃生。在汶川地震之前,在进行结构设计时,没有考虑楼梯对整体结构的影响,对楼梯的设计也只是进行简化处理,只考虑了竖向荷载, 并没有对楼梯进行抗震计算,仅对其进行构造设计。实际上,在结构计算时,考虑楼梯作用对结构具有十分重要的影响。本文以框架结构的教学楼为例,建立了有楼梯的模型和无楼梯的模型,严格根据建抗震筑设计规范的要求,通过PKPM软件进行分析,主要进行以下工作: (1)对比分析楼梯参与整体结构计算,对结构的动力特性的影响,即对结构的基本运动形式、自振周期、结构位移等的影响。(2)在地震作用下,分析板式楼梯对结构主要受力构件的内力影响。通过本文的研究,得到以下结论:在框架结构中,楼梯对整体结构具有斜撑作用,增大了结构的刚度,改变了结构的刚度分布,缩短了结构的自振周期,使得结构的位移减小,层间剪力增大,同时使得楼梯间附近框架的受力构件的内力大幅度提高。关键词:框架结构;楼梯结构;破坏特征;抗震性能 Abstract Abstract The stairsis an important means ofverticaltransport the earthquake,the staircase structure hasbeen encountered staircaseswhich were supposed toplay theroleofhelppeopleescape,did notperform theirproper functionsin faceofnatural earthquake,while people didstructuraldesign,they didn’tconsider thestaircase’impact and theseismic design designer designing analysis and calculation ofstaircase structure issimplified andonly considering thegravity not consider Seismic effect onthestairs. Actually,the influence ofconsider theeffect ofstairs onstructure isveryimportant instructure paper take theframe teaching building forexample, Establishing two models according tothecodes:one hasstaircase another hasn’ totake thestaircase structure intocalculation paper’main tasks include: (1)pare,theframe structure bothwith orwithout thestaircases,the overall structure’S dynamic response andthe forcecharacteristicsundertheearthquake,such as the basic motion ofthestructure,naturalperiod ofthestructure,and theframe structure’Slateraldisplacement. (2)pare,under orfreefromearthquakes,internal forcesofsurrounding ponents. We Can obtain thefollowing conclusion through thestudy ofthispaper:he staircase works asthe roleofdiagonal bracing toframe,which can increase the stiffness of themain thestructural stiffnessdistribution,shorten the natural period ofthestructure,reduce theflamestructure’S lat