【摘要】 大跨度楼盖普遍具有跨度大、刚度小、柔性大、阻尼小等特点。使用者在进行有氧健身操等有节奏运动时容易使楼板产生共振,引发楼板竖向振动舒适度问题。本文以有氧健身操过程中的有节奏振动为振动来源,通过对楼板体系振动进行理论计算的方法得到楼板体系特性。采用楼板结构自振频率和加速度限值两个评价指标作为评价标准,实现对有节奏运动引起的楼板振动舒适度的控制。对文献[1]中6.4节不满足舒适度要求的工程案例采用3种方案进行加固,对3种加固方案进行了对比,并对楼盖竖向振动加速度问题进行了讨论。更多还原

【Abstract】 The structures with large span floors,such as gymnasium,always have some characters like large span,small stiffness,large flexibility and small damping. The resonance will be happened when there are some rhythmic activities on it. It would trigger the discomfort caused by longitudinal vibration. In this paper,the floor system characters are obtained using theoretical calculation methods of floor system vibration. The vibration sources is derived from the rhythmic activities of aerobic exercise. Floor system ’s natural frequency and acceleration limitation are considered to control the comfort level of floor vibration occurred by rhythmic activities.Besides,three plans are made to reinforce the unsatisfied engineering case mentioned in the Section 6. 4 of the Reference 1. The results of three plans are compared and discussions are carried out to find the influence of vertical vibration acceleration on the servicebility.更多还原