楼梯对钢框架结构整体抗震影响的研究
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摘要
楼梯作为结构的一种支撑,对结构的整体性能有着重要影响。以实际工程为背景,采用ETABS软件建立了考虑楼梯构件和不考虑楼梯构件两个钢框架模型,分析了在地震作用下楼梯构件对钢框架结构整体受力性能的影响。计算结果表明,楼梯构件作为一种支撑,具有较大的刚度,对结构的周期、振型、层剪力和层间位移都有很大的影响,必须合理布置楼梯,分析中应考虑其影响,设计中应加强重视。
The stairs,as a support of the structure,have an important impact on the overall performance of a structure.Here,taking a project as background,two steel frame models of considering the stair component or not are set up based on ETABS software,and the impact of the stair component on the integral forced performance of steel frames is analyzed under seismic action.The results show that the stair component as a support has greater stiffness.It has a significant impact on the period,mode,floor shear,and inter story drift of the structure.The stair arrangement must be reasonable.The impact of the stairs should be considered in analysis,and should be more emphasised on design.
The stairs,as a support of the structure,have an important impact on the overall performance of a structure.Here,taking a project as background,two steel frame models of considering the stair component or not are set up based on ETABS software,and the impact of the stair component on the integral forced performance of steel frames is analyzed under seismic action.The results show that the stair component as a support has greater stiffness.It has a significant impact on the period,mode,floor shear,and inter story drift of the structure.The stair arrangement must be reasonable.The impact of the stairs should be considered in analysis,and should be more emphasised on design.
引文
[1]中华人民共和国住房和城乡建设部.GB50011-2010.建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[2]冯远,吴小宾,李从春,等.现浇楼梯对框架结构的抗震影响分析与设计建议[J].土木工程学报,2010,43(10):53-62.
[3]郝泽春,姚满喜.高层结构楼梯参与整体作用的有限元分析[J].四川建筑科学研究,2011,37(5):57-60.
[4]焦柯,吴文勇,黄真康,等.楼梯参与结构整体工作的计算分析[J].广东土木与建筑,2009,(3):3-6.
[5]孙鸿玲,龙飞,孙鹏,等.楼梯间与楼梯的抗震害分析及设计建议[J].四川大学学报(工程科学版),2010,42(Supp.2):24-29.
[6]李科,宋仿存,马可栓,等.多层建筑中楼梯部分对整体结构的地震影响分析[J].水利与建筑工程学报,2011,9(5):60-62,95.
[7]沈靓,张瑜中,吴季柏,等.框架楼梯参与结构抗侧体系工作的有限元分析[J].工程与建设,2010,24(1):77-79.
[2]冯远,吴小宾,李从春,等.现浇楼梯对框架结构的抗震影响分析与设计建议[J].土木工程学报,2010,43(10):53-62.
[3]郝泽春,姚满喜.高层结构楼梯参与整体作用的有限元分析[J].四川建筑科学研究,2011,37(5):57-60.
[4]焦柯,吴文勇,黄真康,等.楼梯参与结构整体工作的计算分析[J].广东土木与建筑,2009,(3):3-6.
[5]孙鸿玲,龙飞,孙鹏,等.楼梯间与楼梯的抗震害分析及设计建议[J].四川大学学报(工程科学版),2010,42(Supp.2):24-29.
[6]李科,宋仿存,马可栓,等.多层建筑中楼梯部分对整体结构的地震影响分析[J].水利与建筑工程学报,2011,9(5):60-62,95.
[7]沈靓,张瑜中,吴季柏,等.框架楼梯参与结构抗侧体系工作的有限元分析[J].工程与建设,2010,24(1):77-79.
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