基于人行激励下的大跨度楼板竖向舒适度分析

Vertical Comfort Analysis of Long-Span Slab Based on the Excitation of Human Walking

大跨度、长悬臂等公共建筑结构往往采用高强、轻质的钢结构或钢与混凝土组合结构,其结构动力特性之一是结构竖向自振频率低、阻尼小。如果设计不当,则人在行走或运动过程中出现较大的振动,尤其是当结构自振频率接近人的行走频率时产生楼面共振,引起人体的不适反应。

Large span,long cantilever and other public building structures often use high strength and light weight steel structure or composite structure of steel and concrete.One of the structural dynamic characteristics of the structure is low vertical natural vibration frequency and small damping.If the design is not proper,there will be a large vibration in the course of walking or moving,especially when the natural vibration frequency of the structure is close to the walking frequency of the human being,the floor resonance will occur,which will cause the human body to feel uncomfortable.