基于人行仿真的结构楼面舒适度分析研究

REASERCH ON COMFORT ANALYSIS FOR STRUCTURAL FLOOR UNDER PEDESTRIAN LOAD

随着新型材料、体系及施工方法的逐渐运用,结构正不断朝着更轻、更柔、跨度更大、阻尼更小的方向发展,这也使得结构的楼盖体系更易在人行运动过程中产生显著的振动响应,引起人体不适和恐慌,甚至影响结构正常使用功能。该文由原理出发,根据国内外研究现状及规范条文,介绍了人行舒适度分析理论及评判标准,并依据中国规范及国际ISO标准的规定,通过时程分析方法对某室外景观天桥进行了人行舒适度分析和研究,详细阐述了楼板人行舒适度的分析及评判方法,并简要介绍了目前楼板竖向振动舒适度常见的减振措施。

With the adoption of new materials as well as structural systems and construction methods, there are appearing more flexible, lighter, greater span and less damping structures, causing the significant vibrational responses of structural floor systems under pedestrian movement loads, which may induce the human discomfort and panic, and even affect the normal utilization of the structures. In this paper, the pedestrian comfort analysis theory and evaluation standards were illustrated firstly by the principle of domestic and foreign research status quo and specification provisions. Furthermore, according to the requirements of national specification and international ISO standard, the time history analysis of an outdoor landscape flyover was done, to elaborate the analysis and evaluation method of the floor pedestrian comfort. Also, the common damping measures of the vertical vibration comfort of the structure floors were introduced.