[1]陈鑫,李爱群,张志强,等.随机人群荷载下大型火车站房大跨楼盖减振设计与分析[J].东南大学学报(自然科学版),2010,40(3):543-547.[doi:10.3969/j.issn.1001-0505.2010.03.021]
 Chen Xin,Li Aiqun,Zhang Zhiqiang,et al.Design and analysis on vibration control of long-span floor in large station room under stochastic crowd-induced excitation[J].Journal of Southeast University (Natural Science Edition),2010,40(3):543-547.[doi:10.3969/j.issn.1001-0505.2010.03.021]
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随机人群荷载下大型火车站房大跨楼盖减振设计与分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第3期
页码:
543-547
栏目:
土木工程
出版日期:
2010-05-20

文章信息/Info

Title:
Design and analysis on vibration control of long-span floor in large station room under stochastic crowd-induced excitation
作者:
陈鑫12 李爱群12 张志强12 陈兴3
1 东南大学土木工程学院, 南京 210096; 2 东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096; 3 中南建筑设计院, 武汉 430071
Author(s):
Chen Xin12 Li Aiqun12 Zhang Zhiqiang12 Chen Xing3
1 School of Civil Engineering, Southeast University, Nanjing 210096, China
2 Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China
3 Central-South Architectural Design Institute, Wuhan 430071, China
关键词:
大跨楼盖 随机人群荷载 振动控制 人体舒适度
Keywords:
long-span floor stochastic crowd-induced loads vibration control human comfort
分类号:
TU356,O328
DOI:
10.3969/j.issn.1001-0505.2010.03.021
摘要:
针对大型火车站房的大跨楼盖的振动舒适度问题,建立了某大型站房的整体有限元模型,采用Ritz向量法对结构进行了模态分析,研究了这类建筑中大跨楼盖的振动特性.以IABSE建议的单人步行激励为基础,考虑行人起步相位角随机分布,提出了楼盖随机人群荷载模拟方法,应用该方法对该大跨楼盖进行了人行荷载模拟,并通过多点输入和时程分析法对该楼盖进行了振动舒适度分析. 总结已有的研究成果,根据大跨楼盖的振动特性,提出了大跨楼盖多重调谐质量阻尼器(MTMD)的减振设计方法,据此对楼盖进行了MTMD减振设计与分析.结果表明,利用该方法设计MTMD减振系统可以有效地控制大跨楼盖的竖向振动,最大衰减率达到72%,各工况下平均衰减率可达44%.
Abstract:
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%.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 陈鑫(1983—),男,博士生; 李爱群(联系人),男,博士,教授,博士生导师, aiqunli@seu.edu.cn.
基金项目: “十一五”国家科技支撑计划资助项目(2006BAJ03A04).
引文格式: 陈鑫,李爱群,张志强,等.随机人群荷载下大型火车站房大跨楼盖减振设计与分析[J].东南大学学报:自然科学版,2010,40(3):543-547. [doi:10.3969/j.issn.1001-0505.2010.03.021]
更新日期/Last Update: 2010-05-20