2019
DOI: 10.1051/matecconf/201928500001
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Dynamic properties of façade frame scaffoldings

Abstract: The paper presents data on natural frequencies and damping parameters of scaffoldings. The analyzes were made mainly on the basis of acceleration measurements made on scaffoldings on construction sites. These studies were supplemented by numerical analyzes, which allowed to show changing of the natural frequencies of the scaffoldings as the effect of the structure exploitation. Finally, it was found that the scaffoldings are structures with low natural frequencies ranging from 1.0 Hz to 4.0 Hz and a logarithmi… Show more

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Cited by 7 publications
(10 citation statements)
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“…Moving on the structure, the low-frequency vibrations of 1.0-2.0 Hz are excited. In the case of slender structures with low natural frequencies, including scaffoldings [20,48], this type of excitation is a significant dynamic load, causing human discomfort and an increase in stress in structural elements [14,49]. This was the reason for considering the probability of vibrations excitation during the movement of employees in the assessment of scaffoldings in terms of safety.…”
Section: Human Walking Parametersmentioning
confidence: 99%
See 1 more Smart Citation
“…Moving on the structure, the low-frequency vibrations of 1.0-2.0 Hz are excited. In the case of slender structures with low natural frequencies, including scaffoldings [20,48], this type of excitation is a significant dynamic load, causing human discomfort and an increase in stress in structural elements [14,49]. This was the reason for considering the probability of vibrations excitation during the movement of employees in the assessment of scaffoldings in terms of safety.…”
Section: Human Walking Parametersmentioning
confidence: 99%
“…Following [20,48], the values of the first free vibrations frequencies of the scaffoldings are in the range from 1.0 to 4.0 Hz. Of the 120 scaffoldings tested in the ORKWIZ project, 32 scaffoldings had the first frequency close to 2.0 Hz.…”
Section: Predictor For Real Scaffolding Structuresmentioning
confidence: 99%
“…From the graphs obtained this way, the free vibration frequency values were read, which correspond to the ordinates of points with signal power peaks. The research methodology and the process of determining the frequency of free vibrations was described in [15,19,27]. For the L12 scaffolding the first free vibration frequency was equal to 1.94 Hz.…”
Section: Description Of the Scaffolding At The Construction Sitementioning
confidence: 99%
“…In the years 2016 to 2018, the project entitled: "Modelling of risk assessment of construction disasters, accidents, and dangerous incidents at workplaces using scaffoldings" (ORKWIZ) was conducted. The main aims of the research were to perform scaffolding tests in the aspects of ensuring employee safety [11][12][13][14][15][16][17][18][19][20][21], studies on the safety culture of employees [22,23], an analysis of the causes of over 180 accidents on scaffolding [24,25], and research on the amount of scaffolding used in Poland depending on the season [26]. Additionally, examples of the errors of scaffolding assembly that negatively affect their carrying capacity were shown in paper [16].…”
Section: Introductionmentioning
confidence: 99%
“…Scaffolding is a lightweight structure made of slender elements used many times, i.e., assembled and disassembled. The dynamic characteristics of such a structure are represented by low natural frequencies (see [1,2]). Scaffoldings are mainly used at construction sites as temporary support structures and therefore are influenced by all dynamic actions present at the place (cf.…”
Section: Introductionmentioning
confidence: 99%