行走作用下梁板结构振动舒适度的烦恼率分析

人行走作用引起的振动舒适度是梁板结构正常使用极限状态设计的重要内容,现行规范给出的静力挠度控制并不能充分体现这一要求。利用最大加速度反应谱法计算行走作用下结构的加速度响应,结合烦恼率模型,给出了基于烦恼率模型的舒适度分析方法,同时将分析结果与使用振动舒适度标准获得的结果进行比较,结合算例分析表明,这两种分析方法给出的分析结论基本一致,而烦恼率方法则具有更为定量化的特点。

Vibration serviceability analysis of floor structures under pedestrian loads

Beam/slab should be designed so that not to cause unpleasant vibration induced by pedestrian loads in ordinary use conditions.However this requirement can not be sufficiently fulfilled by static deflection check proposed by current design codes.A response spectrum method is introduced to determine the peak acceleration response of a beam or a slab under pedestrian loads.To evaluate the human response to vibration acceleration,a newly proposed annoyance method is also introduced.Based on above two methods,an annoyance-based checking procedure(ABCP) is proposed.A simple supported square slab is analyzed through ABCP and traditional human vibration standard method respectively.The results justify the validity and quantified advantages of ABCP.