【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。更多还原

【Abstract】 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.更多还原