钢制无柱梁式螺旋楼梯舒适度分析  

Comfort Level Analysis of Column-Less Beam Spiral Steel Stairs

作　　者：刘劲辉 曹国珍 陈建锋[2] 高秀秀 LIU Jinhui;CAO Guozhen;CHEN Jianfeng;GAO Xiuxiu(China Railway Forth Engineering Group Sixth Engineering Corp.Ltd.,Xi'an 710077,China;School of Civil Engineering,Chang'an University,Xi'an 710064,China)

机构地区：[1]中铁四局集团有限公司第六工程分公司,西安710077 [2]长安大学建筑工程学院,西安710064

出　　处：《结构工程师》2025年第2期9-17,共9页Structural Engineers

摘　　要：基于脉动法测试了某钢制无柱梁式螺旋楼梯的动力特性,试验得到了该钢梯的固有频率和阻尼比,并在试验基础上建立了数值模型,研究了钢制无柱梁式螺旋楼梯舒适性及影响因素。研究结果表明:该钢梯设计舒适度满足现行规范要求,改变钢梯端部约束方式和内外弧梁刚度均会对钢制无柱梁式螺旋楼梯的舒适性产生较为显著的影响。此外,为便于设计,在以上分析基础上,进一步提出一种无柱梁式螺旋钢楼梯自振频率近似计算公式,可用于初步设计阶段估算无柱梁式螺旋楼梯自振频率,预判结构舒适度,为今后类似楼梯的设计及舒适度判断提供参考。Based on the pulsation method,the dynamic characteristics of a column-less steel spiral stair were tested,and the natural frequency and damping ratio of the steel stairs were obtained.Based on the test results,a numerical model was established to study the comfort and influencing factors of the column-less steel spiral stairs.The research results show that the comfort of the steel stair meets the requirements of the current Chinese design code.Change of the constraint conditions at the end of steel stairs and adjusting the stiffness of arc beams supporting them can significantly impact the comfort of column-less steel spiral stairs.In addition,in order to facilitate the design,based on the above analysis,an approximate calculation formula for the natural vibration frequency of the column-less steel spiral stairs was proposed,which can be used to estimate the natural vibration frequency of such steel stairs and predict the comfort level in the preliminary design stage.It provided some reference for the design and comfort analysis of similar stairs in future.

关 键 词：无柱螺旋楼梯 动力特性测试 数值分析 舒适度分析 自振频率 

分 类 号：TU317.1[建筑科学—结构工程]