人行荷载作用下楼板竖向加速度响应研究  

Research on vertical acceleration response of floor slab under pedestrian load

作　　者：王永生 WANG Yongsheng(Shanghai Construction NO.2(Group)Co.,Ltd.,Shanghai 200090,China)

机构地区：[1]上海市建工二建集团有限公司,上海200090

出　　处：《建筑结构》2021年第12期87-90,共4页Building Structure

摘　　要：楼板竖向加速度是影响楼板舒适度的主要指标。对楼板动力响应公式进行了分析,采用傅里叶级数法对单人行走荷载作用下楼板竖向加速度响应进行了研究,并进行单人行走荷载作用下正方形简支组合板动力响应试验验证,计算结果表明峰值加速度理论值与试验值误差为28.7%。在此基础上分析步频、楼板长宽比对楼板峰值加速度的影响。分析结果表明:楼板长宽比从1.0增大到8.0时,峰值加速度降低73%;在同样的人行荷载作用下且楼板短边尺寸固定的条件下,双向板加速度响应远大于单向板。The vertical acceleration of floor slab is the main index affecting the comfort of floor slab.The dynamic response formula of floor slab was analyzed,Fourier series method was adopted to study vertical acceleration response of floor slab under single-person walking load,a square simply supported composite slab test was used to verify the correctness of the theory.The calculation results show that the error between the theoretical value and the experimental value of peak acceleration is 28.7%.On this basis,the influence of step frequency and length-width ratio of slab on the peak acceleration of floor slab was analyzed.The analysis results show that when the length-width ratio of slab increases from 1.0 to 8.0,the peak acceleration decreases by 73%;under the same pedestrian load and the condition of fixed length of short side of slab,the peak acceleration response of the two-way plate is much larger than that of the one-way plate.

关 键 词：人行荷载 单人行走 竖向加速度 步频 楼板长宽比 

分 类 号：TU398.7[建筑科学—结构工程]