钢结构悬挑楼梯设计与分析  

Design and Analysis of Steel Cantilever Stairs

作　　者：陈宏伟 梁旭东 陈文莉[2] CHEN Hong-wei;LIANG Xu-dong;CHEN Wen-li(China Northwest Architecture Design and Research Institute Co.Ltd.,Xi'an 710008,China;Xianyang Normal University,Xianyang 712000,China)

机构地区：[1]中国建筑西北设计研究院有限公司,西安710008 [2]咸阳师范学院,陕西咸阳712000

出　　处：《工程建设与设计》2023年第17期17-21,共5页Construction & Design for Engineering

摘　　要：介绍了悬挑楼梯的选型,对钢结构悬挑楼梯的结构体系、变形及受力特点进行分析。结合某工程实例,采用通用有限元软件Midas Gen建立三维空间模型,分析了钢结构悬挑楼梯的变形、内力,并进行了截面应力验算,得出了钢悬挑楼梯主要是由斜向梯梁与平台横梁组成的近似三角形刚架体系,因此钢悬挑楼梯的变形能力提高了。通过整体模态分析和实际工况时程分析,对结构舒适度进行了评价。最后介绍了钢悬挑楼梯的刚接支座节点。This paper introduces the selection of cantilever stairs,and analyzes the structural system,deformation and stress characteristics of steel cantilever stairs.Then,combined with an engineering example,Midas Gen is used to establish a three-dimensional space model.The deformation and internal force of steel cantilever staircase are analyzed,and the section stress calculation is carried out.It is concluded that steel cantilever staircase is mainly composed of inclined ladder beam and platform beam,which improves the deformation ability of steel cantilever staircase.In addition,the structural comfort is evaluated by the overall modal analysis and the actual working condition time history analysis.Finally,therigid support joints of steel cantilever stairs are introduced.

关 键 词：钢结构 悬挑楼梯 舒适度分析 刚接支座 

分 类 号：TU391[建筑科学—结构工程] TU229