Design and analysis on vibration control of long-span floor in large station room under stochastic crowd-induced excitation

被引：4

作者：

Chen X. ^{[1
,2
]}

Li A. ^{[1
,2
]}

Zhang Z. ^{[1
,2
]}

Chen X. ^{[1
,2
]}

机构：

[1] School of Civil Engineering, Southeast University

[2] Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University

[3] Central-South Architectural Design Institute

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 03期

关键词：

Human comfort; Long-span floor; Stochastic crowd-induced loads; Vibration control;

D O I：

10.3969/j.issn.1001-0505.2010.03.021

中图分类号：

学科分类号：

摘要：

The vibration serviceability of long-span floors in large station rooms is studied. A finite element model of a large station room is established, and the modal properties of the structure are analyzed by the Ritz vector method; then the vibration properties of the long-span floors in this structure are studied. Based on the single person walking forces of IABSE (international association for bridge and structural engineering), a new method to model stochastic crowd-induced loads is proposed considering the random distribution of the person's initial phase angle, and the human induced loads of the long-span floor are modeled by this method. Then the vibration serviceability of the floors is analyzed by a multi-support excitation and time history analysis method. According to the vibration characteristics of long-span floors, a design method for a long-span floor's multiple tuned mass dampers (MTMD) system is concluded from the existing researches, and a MTMD system in the floor is designed and analyzed by this method. The results shows that the MTMD system designed by this method can control the vertical vibration of the long-span floor effectively. The maximum attenuation rate under various working conditions is up to 72%. The average attenuation rate is about 44%.

引用

页码：543 / 547

页数：4

共 9 条

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