针对搭接扶梯的悬挑楼盖在行人-扶梯耦合作用下容易产生铅垂向振动的问题,以某高架商业夹层中的悬挑楼盖为背景,采取了现场振动测试的方法,研究扶梯运行、行人数量及行人运动状态对悬挑楼盖振动响应的影响,并通过测试数据对楼盖结构做振动舒适度及人员感知度评价。结果表明：行人在扶梯上的跑动是导致悬挑楼盖振动的主要原因；楼盖的振动响应随行人人数增加而更加明显,但随距扶梯的长度增加而衰减；采用峰值加速度对悬挑楼盖进行舒适度评价,当行人在扶梯上跑动时悬挑楼盖的振动响应已超出舒适度限值；采用KB(Konstant Beurteilungswerte)值对悬挑楼盖进行感知度评价,当行人相对扶梯静止时,悬挑楼盖的振动不会超出感知度容许值,当行人相对扶梯走动或跑动时,悬挑楼盖的振动则会超出感知度容许值；人员相对扶梯运动并不会导致悬挑楼盖发生共振。

On lap escalator cantilever floor under pedestrians - escalator coupling is prone to lead the problem of vertical vibration, in a commercial laminated cantilever in the floor as the background, take the field vibration test method, the escalator running, the number of pedestrians and pedestrian movement on the influence of the cantilever floor vibration response, and through the test data of floor structure vibration comfort perception evaluation and personnel. The results show that the movement of pedestrian on escalator is the main reason for the vibration of overhanging roof. The vibration of the roof is more obvious in response to the increase of the number of people accompanying it, but decreases with the increase of the length of the escalator. The peak acceleration was used to evaluate the comfort of overhanging roof, and the vibration response of overhanging roof exceeded the comfort limit when pedestrians ran on the escalator. Use KB (Konstant Beurteilungswerte) value to judge the perception of cantilever floor, when the pedestrian relatively static escalators, the vibration of the cantilever floor not beyond the permissible value perception degrees, when pedestrians are relatively escalator when walking or running, the vibration of the cantilever floor would be beyond the permissible value perception degrees; The movement of people relative to escalators does not cause the overhanging roof to resonate.

TH352. 1; TH393. 3