钢结构螺旋楼梯结构计算分析与设计

Structural analysis and design of steel spiral staircase

以实际工程中的钢结构螺旋楼梯为研究对象,根据有限元板壳结构理论,采用MIDAS Gen建立了简化和整体有限元分析模型,得出螺旋楼梯的实际受力与简化假定不符,应考虑踏步板的作用进行整体建模分析,并对常用的四种支座情况计算结果进行对比分析,发现螺旋楼梯两端的支座型式对钢结构应力和舒适度影响很大,参考国内相关规范的要求,对舒适度进行分析,并给出了两端刚接支座与混凝土结构的节点连接详图参考。

Steel spiral staircase based on the actual engineering as the research object,according to the finite element shell structure theory,and a simplified and a whole finite element analysis model were established by MIDAS Gen,and the results show that the assumption does not match the actual force that spiral staircase,and the whole modeling step plate should be considered in the analysis of whole model,and four kinds of support the commonly used calculation results were analyzed,it found that the types of support at both ends of the spiral staircase stress and comfort have great influence on the steel structure,the reference of domestic relevant standards,the comfort analysis,and gives the ends of the rigid joints bearing and concrete structure connection details.