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Quantification of Damping Effect of Humans on Lightly Damped Staircases

机译:量化浅阻冲楼梯对人类阻尼效应的定量

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There is experimental evidence that the people interacting with structures are not only an active load but also affect the structural properties. Particularly, considerable damping ratio value changes are often experienced. This fact assumes a relevant importance in assessing the structure serviceability against vibrations due to pedestrian induced loads. There is therefore ground to find methods capable of estimating the effect induced by people interacting with a structure, in terms of both changes of modal parameters and of loading effect. This work aims at presenting a model, partly based on modal approach, able to describe people effect on a structure. Each person is modelled as a two degrees of freedom spring-mass-damper system and is introduced locally on the structure. Several tests on a lightly damped staircase were then carried out to validate the model.
机译:有实验证据表明与结构相互作用的人不仅是有源负载,还影响结构性。特别是,通常经历相当大的阻尼比值变化。这一事实假设在评估由于行人诱导载荷引起的振动的结构可维护性的相关重要性。因此,就拟型参数的变化和加载效果而言,可以找到能够估计与结构相互作用的人们引起的效果的方法。这项工作旨在提出一个模型,部分基于模态方法,能够描述人们对结构的影响。每个人被建模为两度自由度春全阻尼系统,并在本地引入结构。然后执行在轻微阻尼楼梯上进行几次测试以验证模型。

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