（上海联创建筑设计有限公司， 上海 200120）

[摘要]  针对某商业建筑中的C形箱梁式钢结构楼梯，建立有限元模型，对单人在楼梯中部原地踏步和多人队列同步走过楼梯两种不同工况进行了舒适度分析与评估，结果表明楼梯满足中国及美国规范中的舒适度设计要求。通过对比不同步频、不同阻尼比条件下楼梯的峰值加速度响应，得出了楼梯舒适度设计影响因素的变化规律，提出了一些有利于改善舒适度的思路，所采用的分析方法和建议对此类钢结构楼梯的舒适度设计有一定参考价值。

[关键词]  箱梁式钢结构楼梯； 人行时程荷载； 振动舒适度

中图分类号：TU311.3,TU391            文献标识码：A         文章编号：

作者简介：孙振，硕士，工程师，一级注册结构工程师，Email：sunzhen@udg.com.cn。

Vibration comfort analysis and research of a C-shape box girder staircase under human activity

Sun Zhen

(United Design Group(Shanghai) CO.,LTD. Shanghai 200120,China)

Abstract: The structure finite element model of a C-shape box girder steel staircase in a commercial building was established. For two cases, solo stepping on the middle of the staircase and multi-people queue walking synchronously though the staircase, an analysis and evaluation was made. The results showed that the staircase meet the comfort degree requirements in the structure design standards of China and the United States. From comparing the peak acceleration response of the staircase among the cases of different frequencies and different damping ratios, the changing rule of the influence factors of staircase comfort degree design was concluded. Some ideas to improve the comfort degree were proposed. The methods and suggestions could be referred to the vibration comfort degree design of this kind of steel staircases.

Keywords: box girder steel staircase; time history load of pedestrian; vibration comfort degree.

参  考  文  献

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