(深圳华森建筑与工程设计顾问有限公司 518054)
［提要］ 结合某工程钢结构螺旋楼梯的工程实例，简要介绍了利用空间管桁架进行螺旋楼梯的设计和计算方法。考虑了几何非线性，采用ANSYS和SAP2000进行了结构计算分析，提出了空间管桁架螺旋楼梯的设计要点。通过进行静力、地震分析和设计实践说明了采用空间管桁架的结构形式是可行的，结构具有很大的抗侧刚度和抗扭刚度。
［关键词］ 钢结构 螺旋楼梯 空间管桁架 几何非线性
Discussion on the Design of Steel Space Truss Structure of Spiral Stair/Cao Weiliang,Ba Guijiang,Liu Weiya (Shenzhen Huasen Architecture & Engineering Deign Consultants Co.,Ltd.,Shenzhen 518054,China)
Abstract:Based on the spiralstair in a project,the design and calculation method for the spacetruss applied in the spiralstair are introduced.The finite element analysis is done with the software of ANSYS and SAP2000,considering the geometry nonlinearity.According to the analysis results,some keys of design for spacetruss spiralstair are put forward.It is indicated that the spacetruss are feasible to be applied to the spiral truss and the spacetruss structure has large flexural stiffness and torsional stiffness,by the static and seismic analysis and engineering practice.
Keywords:steel structure; spiral stair; space truss; geometric nonlinearity