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（1 蘭州理工大學(xué)防震減災(zāi)研究所， 蘭州 730050; 2 蘭州理工大學(xué)西部土木工程防災(zāi)減災(zāi)教育部工程研究中心， 蘭州 730050)
［摘要］基于人-結(jié)構(gòu)耦合振動，對某鋼結(jié)構(gòu)連廊的人致振動舒適度進行評估，并對其產(chǎn)生的過量振動進行減振控制。為了考慮人-結(jié)構(gòu)耦合作用，將單自由度體系的人體動力學(xué)模型與傅立葉級數(shù)人行荷載模型組合代表單個行人荷載。利用ANSYS建立大跨鋼結(jié)構(gòu)連廊的有限元模型，并采用APDL編程將行人荷載分別以定點加載、單步移動加載及人群同步移動加載等不同工況加載于有限元模型中，對比分析不同工況下考慮人-結(jié)構(gòu)耦合振動前后連廊的加速度響應(yīng)，同時以峰值加速度作為指標評估該鋼結(jié)構(gòu)連廊的振動舒適度，并選用單個調(diào)諧質(zhì)量阻尼器（TMD）對連廊的過量振動進行減振控制。結(jié)果表明：對大跨連廊結(jié)構(gòu)進行人致振動舒適度評估時，應(yīng)考慮人群-結(jié)構(gòu)耦合振動；TMD能有效控制大跨連廊結(jié)構(gòu)的人致過量振動。
［關(guān)鍵詞］大跨連廊； 人體動力學(xué)模型； 振動舒適度； 人致振動； 振動控制
中圖分類號：TU391文獻標識碼：A文章編號：1002-848X(2020)14-0120-06
Evaluation on human-induced vibration comfort of large-span corridors based on population-structure coupled vibration
HUI Xiaoli1, ZHU Qiankun1,2, ZHANG Qiong1, PU Xinglong1
（1 Institute of Earthquake Protection and Disaster Mitigation， Lanzhou University of Technology， Lanzhou 730050， China；2 Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China)
Abstract:Based on the human-structure coupled vibration, the human-induced vibration comfort of a steel structure corridor was evaluated and the excessive vibration generated was controlled. In order to consider the human-structure coupled effect, the human body dynamic model of the single-degree-of-freedom system and the Fourier series pedestrian load model were combined to represent a single pedestrian load. The finite element model of the long-span steel structure corridor was established by using ANSYS, programming APDL was used to load the pedestrian load into the finite element model in different working conditions such as fixed-point loading, single-step moving loading and crowd synchronous moving loading, the acceleration responses between with and without considering the human-structure coupled vibration were contrasted and analyzed. At the same time, the peak acceleration was taken as the index to evaluate the vibration comfort of the steel structure corridor, and a single tuned mass damper (TMD) was selected to control the excessive vibration of the corridor. The results show that the population-structure coupling vibration should be considered when evaluating the human-induced vibration comfort of the large-span corridor structure; TMD can effectively control the human-induced excessive vibration of the large-span corridor structure.
Keywords:large-span corridor; human body dynamic model; vibration comfort; human-induced vibration; vibration control
*國家自然科學(xué)基金資助項目(51508257，51668042，51868046)。
通訊作者：朱前坤，博士，教授，碩士生導(dǎo)師，Email: zhuqk@lut. cn。
