Numerical and Experimental Study on the Dynamic Behavior of an Innovative Steel-Concrete Composite Hollow Waffle Floor

Zhang, Xi; Li, Qing; Wang, Yousan; Wang, Qiming

doi:10.1142/s021945542050087x

Cited by 2 publications

(1 citation statement)

References 20 publications

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“…Under an exciting force, such as human walking and running, long span or slender floors would be more susceptible to vibration. 13 Adding nonstructural elements such as partition walls could reduce floor vibration, but it would lead to a rise of vibration transmission between two adjacent stories. 14 Few studies have reported the transmission characteristics of vibration induced by indoor impact sources in high-rise buildings.…”

Section: Introductionmentioning

confidence: 99%

The transmission characteristics and influence prediction of impulsive vibration caused by a solid metal ball impact in buildings

Guo

Lin

2022

Journal of Low Frequency Noise, Vibration and Active Control

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The impulsive vibration induced by human running and jumping, object falling, striking during decoration, etc., significantly disturbs the learning, work, and life of people through building structure transmission. To study the influence of impulsive vibration in buildings, a vacant frame building was selected as a tested building. The vibration at each floor besides hitting spot would be measured when a solid metal ball falling freely hit the first floor of this building. The vibration response at each floor caused by the excitation above was simulated through a finite element method. The parameters of the simulation model were optimized according to measured results. Furthermore, the influence of building structure, the total amount of stories, and slab dimension on the transmission of vibration from 1 Hz to 80 Hz which can be perceived by human bodies was quantitatively studied. Results showed that the vertical weighted vibration acceleration level at each floor linearly decreased with the increase of the logarithm of the distance between each floor and the hitting spot. A prediction model of vertical weighted vibration acceleration level from 1 Hz to 80 Hz induced by the impulsive vibration in buildings was developed according to simulation results. The corrections relating to the number of story, building structure, slab span, slab length-to-width ratio, and slab thickness were respectively introduced in the model which can predict the vertical weighted vibration acceleration level at each floor above the hitting spot. The results of this study can provide a basis for the prediction and control of impulsive vibration caused by an impact source with great stiffness in buildings.

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Section: Introductionmentioning

confidence: 99%

The transmission characteristics and influence prediction of impulsive vibration caused by a solid metal ball impact in buildings

Guo

Lin

2022

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

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Statistical Analysis and its Validation of the Change in Structural Dynamic Properties Under Crowd Bouncing Excitation

Wang

Zhang

2022

Int. J. Str. Stab. Dyn.

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Bouncing is a common human activity that is frequently observed in large-span structures such as sports stadiums and concert halls; this activity can cause vibration serviceability problems that must be considered at the structural design stage. Current design codes suggest methods for predicting structural responses under rhythmic bouncing excitations. However, these methods typically do not consider the interaction effect between the crowd and structure, which is highly significant, particularly for large groups of people. Such an effect can quantitatively be evaluated from the structural dynamic property changes attributable to the crowd. Using the random distribution of human model parameters given in a previous study, we propose an empirical formula to predict the frequency and damping ratio of the coupled system via statistical analysis. The structural dynamic properties are updated. A response spectrum method framework that employs the updated structural dynamic properties is proposed and validated through a series of experiments on crowd bouncing. The results show that the response spectrum method provides a reasonable prediction of the structural responses. Hence, this study provides an effective method for quantitatively considering the interaction effect when calculating structural responses at the design stage.

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Numerical and Experimental Study on the Dynamic Behavior of an Innovative Steel-Concrete Composite Hollow Waffle Floor

Cited by 2 publications

References 20 publications

The transmission characteristics and influence prediction of impulsive vibration caused by a solid metal ball impact in buildings

The transmission characteristics and influence prediction of impulsive vibration caused by a solid metal ball impact in buildings

Statistical Analysis and its Validation of the Change in Structural Dynamic Properties Under Crowd Bouncing Excitation

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