| 西安北站高架层楼盖舒适度分析与减振设计 |
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| 引用本文： | 陈兴,张志强,李霆,李爱群,江红,陈鑫,俞剑锋,马斐,刘康安. 西安北站高架层楼盖舒适度分析与减振设计[J]. 建筑结构, 2011, 0(7) |
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| 作者姓名： | 陈兴 张志强 李霆 李爱群 江红 陈鑫 俞剑锋 马斐 刘康安 |
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| 作者单位： | 中南建筑设计院股份有限公司;东南大学土木工程学院;南京丹普科技工程有限公司; |
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| 摘 要： | 针对西安北站高架层大跨楼盖的振动舒适度问题,建立了整体有限元模型,采用Ritz向量法对结构进行了模态分析,对其振动特性进行了研究。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,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。据此分析结果对楼盖进行了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,最大减振率达到89.2%,各工况下平均减振率可达44%。
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| 关 键 词： | 西安北站 大跨楼盖 随机人群荷载 振动控制 人体舒适度 |
Analysis on vibration serviceability and design on vibration control of long-span floor in Xi'an North Railway Station |
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| Abstract: | The vibration serviceability of long-span floors in Xi'an North Railway Station was studied.A finite element model of a large station room was established,and the modal properties of the structure were analyzed by the Ritz vector method.Then the vibration properties of the long-span floors in this structure were studied.Based on the single person walking forces of IABSE,a new method to model stochastic crowd-induced loads was proposed considering the random distribution of the person's initial phase angle,a... |
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| Keywords: | Xi'an North Railway Station long-span floor stochastic crowd-induced loads vibration control human comfort |
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