Vibration analysis of steel–concrete composite floors when subjected to rhythmic human activities

Campista, Fernanda Fernandes; Silva, José Guilherme Santos da

doi:10.1007/s13349-018-0303-6

Cited by 5 publications

(11 citation statements)

References 12 publications

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“…A 205 × 10 3 MPa Young's modulus was adopted for the steel beams. The concrete slab presents a 30 MPa specified compression strength and a 26 × 10 3 MPa Young's modulus [1].…”

Section: Finite Element Modellingmentioning

confidence: 99%

“…Both materials (steel and concrete) present an elastic behaviour. Regarding the structural behaviour of the connections present in the investigated structural model, the beam-to-beam connections were modelled as flexible joints and the beam-to-column connections were considered as rigid joints [1].…”

Section: Finite Element Modellingmentioning

confidence: 99%

“…The current steel-concrete composite floors design might be susceptible to the resonance phenomenon causing undesirable vibrations in the frequency range that is the most noticeable to human perception, i.e., 4 Hz to 8 Hz [1][2][3][4][5]. On the other hand, at the same time, most of the natural frequencies of composite floor systems also lie in this range.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the excitation force frequencies due to human rhythmic activities occur in this range as well. All these combinations make the structural systems more susceptible to the resonance phenomenon, causing undesirable vibrations and human discomfort [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it has been observed in design practice low floor structural damping ratios, which is related to the type of construction, materials, presence of non-structural elements, age and also quality of the construction process [1,2]. Therefore, all these combinations make the steel-concrete composite floors very susceptible to annoying vibrations induced by human rhythmic activities.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Human Comfort Evaluation of a Steel-Concrete Composite Building Subjected to Aerobics

Silva¹,

Sieira²,

Campista³

et al. 2016

JCEA

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Abstract:The current steel-concrete composite floors design might be susceptible to the resonance phenomenon, causing undesirable vibrations in the frequency range that is the most noticeable to humans, i.e., 4 Hz to 8 Hz. This way, the main objective of this work is to investigate the dynamic structural behaviour of a steel-concrete composite multi-storey building when subjected to human rhythmic activities (aerobics). The studied structural model represents a typical interior floor bay of a commercial building used for gym and is composed by three floor levels spanning 20 m by 20 m, with a total area of 3 × 400 m2 . An extensive parametric study was developed aiming to obtain the peak accelerations, RMS (root mean square) accelerations and VDV (vibration dose value) values, based on two different mathematical formulations. The human comfort of the building was analysed and the vibration transmissibility related to the steel columns was verified. Based on the found results, the investigated structural model presented high vibration levels that compromise the human comfort.

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“…A 205 × 10 3 MPa Young's modulus was adopted for the steel beams. The concrete slab presents a 30 MPa specified compression strength and a 26 × 10 3 MPa Young's modulus [1].…”

Section: Finite Element Modellingmentioning

confidence: 99%

Section: Finite Element Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Human Comfort Evaluation of a Steel-Concrete Composite Building Subjected to Aerobics

Silva¹,

Sieira²,

Campista³

et al. 2016

JCEA

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Comfort Behavior of High Performance Floor Based on Single-Jump Excitation Mode Considering Time–Space Effect

Zhang

2023

Lecture Notes in Civil Engineering

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Because the traditional analysis methods cannot directly describe the comfort behavior of high performance floor through the dimensions of time and space, this paper presents a new method to derive Dirac delta functions and governing differential equations to assess its comfort behavior. On the basis of this, an improved single-jump excitation model is proposed for comfort behavior analysis. In addition, the paper analyzes distribution characteristic of sensitive parameters for the high performance floor. The results show that the peak acceleration is concentrated in the middle of the high performance floor, and then the acceleration response gradually weakened to the two sides, and its degree of weakening is greater along the two corners of the floor model from its spatial and temporal distribution characteristics. In future, it is recommended to change the strength grade of concrete materials to improve its comfort behaviors. The study also demonstrates the strong applicability of improved single-jump excitation model as an effective approach to analyzing the comfort behavior of high performance floor.

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Numerical evaluation of dynamic load models of humans walking on building floors

Cunha,

Argôlo

2024

Rev. IBRACON Estrut. Mater.

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Composite steel and concrete floors are often susceptible to excessive vibrations caused by human activities because of their slender structural elements. To achieve a precise evaluation, it is necessary to incorporate the effects of dynamic loads in the computational model; however, it is difficult to predict this type of load. This study aims to analyze a set of human dynamic load models applied to four composite steel and concrete floors and verify which model can simulate the real load effects by comparing the numerical results obtained in this research with the experimental results obtained in other studies. It was possible to determine the dynamic model that yielded peak and root mean square accelerations closer to the experimental values for different analysis situations.

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Vibration analysis of steel–concrete composite floors when subjected to rhythmic human activities

Cited by 5 publications

References 12 publications

Human Comfort Evaluation of a Steel-Concrete Composite Building Subjected to Aerobics

Human Comfort Evaluation of a Steel-Concrete Composite Building Subjected to Aerobics

Comfort Behavior of High Performance Floor Based on Single-Jump Excitation Mode Considering Time–Space Effect

Numerical evaluation of dynamic load models of humans walking on building floors

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