考虑室内布局影响的高频楼盖人致振动舒适度全域评估  

Global assessment of human-induced vibration serviceability in high‑frequency floors considering the influence of indoor layout

作　　者：蒲兴龙 何天虎[3] 朱前坤[1] PU Xinglong;HE Tianhu;ZHU Qiankun(Institute of Earthquake Protection and Disaster Mitigation,Lanzhou University of Technology,Lanzhou 730050,China;School of Civil Engineering,Hexi University,Zhangye 734000,China;School of Sciences,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050 [2]河西学院土木工程学院,甘肃张掖734000 [3]兰州理工大学理学院,甘肃兰州730050

出　　处：《振动工程学报》2025年第2期310-320,共11页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(52168041,51868046);甘肃省青年科技基金计划项目(21JR7RA557);甘肃省研究生“创新之星”项目(2023CXZX-449)。

摘　　要：人群荷载的高阶谐波可能会引起高频楼盖动力响应的增大,导致舒适度或安全问题。本文旨在分析室内物品的不同布局形式对高频楼盖人致振动的影响。结合社会力模型(SFM)和行人荷载模型,建立了高频楼盖随机荷载模型;在考虑行人-结构相互作用(HSI)的基础上,建立了高频楼盖人致振动计算模型;采用基频为10.35 Hz的高频楼盖进行测试,验证了计算模型应用于不同布局形式时的合理性;采用人致振动全域评估方法对不同布局形式的楼盖在人群随机行走下的舒适度进行了评估,并给出了概率结果。结果显示,对于高频楼盖人致振动问题需要考虑楼盖高阶振型的影响。5人随机行走工况下,在考虑HSI后,不同布局形式的楼盖动力响应有所减小,加速度峰值最大减小13.33%,出现舒适度问题的概率值最大减小12%。并且楼盖的舒适度会因室内布局形式的不同呈现不同的结果,研讨室布局的楼盖出现舒适度问题的概率最大,公共教室次之,会议室概率最小。Higher-order harmonics of crowd loads may can lead to an increase in the dynamic response of high-frequency floors,re-sulting in serviceability and safety issues.This study aims to analyze the effect of different indoor layouts on the human-induced vi-bration of high-frequency floors.First,a random load model for high-frequency floors is established by combining the social force model(SFM)and a pedestrian load model.Next,a computational model for human-induced vibration of high-frequency floors is developed,taking into account human-structure interaction(HSI).A high-frequency floor with a fundamental frequency of 10.35 Hz is tested to validate the reasonableness of the computational model when applied to different layout configurations.Final-ly,the serviceability of the floor with different layout forms under random crowd walking conditions is evaluated using the global as-sessment method for human-induced vibration,with probabilistic results provided.The results show that for human-induced vibra-tion problem in high-frequency floors,the influence of high-order vibration modes must be considered.Under the random walking conditions for five people,the dynamic response of the floor with different layouts is reduced after considering HIS,with a maxi-mum reduction of 13.33%in peak acceleration and a maximum reduction of 12%in probability value of serviceability.The service-ability of the floor varies with the different layout configuration.Specifically,the probability of serviceability problems is highest for the floor with a discussion room layout,followed by the classroom layout,with the meeting room layout the lowest probability.

关 键 词：人致振动舒适度 高频楼盖 物品布局形式 人群随机荷载模型 行人-结构相互作用 全域评估方法 

分 类 号：TU311.3[建筑科学—结构工程]