【作者】 冯玉沛； 李永梅；

【Author】 Feng Yupei;Li Yongmei;Beijing Key Lab of Earthquake Engineering and Structural Retrofit,Beijing University of Technology;Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing University of Technology;

【机构】 北京工业大学工程抗震与结构诊治北京市重点实验室； 北京工业大学城市与工程安全减灾省部共建教育部重点实验室；

【摘要】 为了探究地震作用下楼梯对钢框架结构抗震性能的影响,应用PKPM软件,分别建立考虑楼梯作用与无楼梯参与整体结构的两个分析模型,地震作用下对整体结构和楼梯间各构件内力、位移等进行计算。结果表明:楼梯提高了结构的抗侧刚度,减小了结构的位移反应,而且在顺楼梯方向明显大于垂直楼梯方向;与不考虑楼梯作用相比,考虑楼梯影响后,楼梯间框架柱、梯板梁和平台梁等构件设计偏于不安全,而楼梯间框架梁设计偏保守。更多还原

【Abstract】 PKPM software was used to establish two analysis models that considered the role of stairs and no stairs involved in the overall structure.The internal forces and displacements of the whole structure and the components of the stairwell under earthquake were calculated to investigate effect of stairs on the seismic performance of the steel frame structure.The results indicate that:stairs increase the lateral stiffness of the structure,reduce the displacement response of the structure,and are significantly larger than the direction of the vertical stairs in the direction of the stair;Compared with the effect of not considering the staircase,after considering the influence of the stairs,the structural design of the stair column,the stair beam and the platform beam of the stairway is unsafe,while the design of the frame beam of the stairwell is conservative.更多还原