Assessment of the Effect of Wind Load on the Load Capacity of a Single-Layer Bar Dome

Opatowicz, Dominika; Radoń, Urszula; Zabojszcza, Paweł

doi:10.3390/buildings10100179

Cited by 5 publications

(5 citation statements)

References 27 publications

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“…At this stage of the research, the accuracy of the obtained results was assumed based on the knowledge and experience of the article's authors in engineering design. It should be noted that these results are of the same order as the results available in the literature 38 , 39 . The results have not been verified by any other method or software.…”

Section: Discussionsupporting

confidence: 85%

Steel ribbed dome structural performance with different node connections and bracing system

Jeleniewicz,

Jaworski,

Żółtowski

et al. 2024

Sci Rep

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The conventional design of steel structure objects relies on a first-order elastic analysis, where the entire object is treated as a set of individual structural elements requiring time-consuming, semi-empirical design calculations. Such an approach leads to inefficient design time and excessive material consumption and may additionally result in designing on the verge of structural safety. The AEC sector's technological and digitization advancement process forces designers to use advanced design methods. Hence, it is necessary to indicate the benefits of using effective optimization. The paper presents a comparative analysis of steel domes using two design approaches: traditional first-order analysis and an advanced second-order analysis. The latter method considers the influence of structural deformation on the magnitude of internal forces. Eight models were developed, varying in terms of the connection's stiffness. The work results identify the differences between the two selected design approaches and present opportunities for further structural performance of steel structures.

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Section: Discussionsupporting

confidence: 85%

Steel ribbed dome structural performance with different node connections and bracing system

Jeleniewicz,

Jaworski,

Żółtowski

et al. 2024

Sci Rep

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“…Depending on the arrangement of the rods, the structures can be divided into several groups (dome patterns), i.e., Kiewit domes, Lamella domes, Schwedler domes, and others. The research on standard steel domes concerns increasing the load capacity of the structure of the load-bearing capacity of the structure [1] and methods of taking into account the impact of non-uniform loads [2][3][4][5][6] or imperfections [7][8][9]. Most of the research focuses on optimization design [10,11], stability analysis [12,13], and reliability analysis [14,15].…”

Section: Introductionmentioning

confidence: 99%

Qualitative and quantitative analysis of tensegrity domes

Obara,

Solovei,

Tomasik

2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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The paper concerns steel domes with regard to the special structures named tensegrity. Tensegrities are characterized by the occurrence of self-stress states. Some of them are also characterized by the presence of infinitesimal mechanisms. The aim of this paper is to prove that only tensegrity domes with mechanisms are sensitive to the change of the level of initial prestress. Two tensegrity domes are considered. In addition, a standard single-layer dome is taken into account for comparison. The analysis is carried out in two stages. Firstly, the presence of the characteristic tensegrity features is examined (qualitative analysis). Next, the behavior under static external loads is studied (quantitative analysis). In particular, the influence of the initial prestress level on displacements, effort, and stiffness of the structure is analyzed. To evaluate this behavior, a geometrically non-linear model is used. The model is implemented in an original program written in the Mathematica environment. The analysis demonstrates that for a dome with mechanisms, the adjustment of pre-stressing forces influences the static properties. It has been found that the stiffness depends not only on the geometry and properties of the material but also on the initial prestress level and external load. In the case of the non-existence of mechanisms, structures are insensitive to the initial prestress level.

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“…The discrepancies between different FE types were very slight. (10) In Table 11, the first natural frequencies for the p4 model are complied. The selected modes of natural vibration are shown in Figures 16-19.…”

Section: Modal Analysismentioning

confidence: 99%

“…In the past, the stress analyses of domes were performed analytically; hence, the analyses were affected by strong assumptions of the shell theories, concerning, e.g., the methods of modeling the boundary conditions and the loads, keeping the rotationally symmetric property of the problem [5,6]. Currently, due to the limitations of the analytical approach, FEM analysis is usually used; see [7][8][9][10]. In some studies, the quasi-brittle behavior of the materials from which the domes are constructed is also taken into account; cf.…”

Section: Introductionmentioning

confidence: 99%

In-Depth Verification of a Numerical Model for an Axisymmetric RC Dome

2021

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The designers of civil engineering structures often have to face the problem of the reliability of complex computational analyses performed most often with the Finite Element Method (FEM). Any assessment of reliability of such analyses is difficult and can only be approximate. The present paper puts forward a new method of verification and validation of the structural analyses upon an illustrative example of a dome strengthened by circumferential ribs along the upper and lower edges. Four computational systems were used, namely Abaqus, Autodesk Robot, Dlubal RFEM, and FEAS. Different models were also analyzed—two-dimensional (2D) and three-dimensional (3D) ones using continuum, bar, and shell finite elements. The results of the static (with two kinds of load—self-weight and load distributed along the upper ring) and modal analyses are presented. A detailed comparison between the systems’ and models’ predictions was made. In general, the spatial models predicted a less stiff behavior of the analyzed dome than the planar models. The good agreement between different models and systems was obtained for the first natural frequency with axisymmetric eigenmodes (except from the Autodesk Robot system). The presented approach to the verification of complex shell–bar models can be effectively applied by structural designers.

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Assessment of the Effect of Wind Load on the Load Capacity of a Single-Layer Bar Dome

Cited by 5 publications

References 27 publications

Steel ribbed dome structural performance with different node connections and bracing system

Steel ribbed dome structural performance with different node connections and bracing system

Qualitative and quantitative analysis of tensegrity domes

In-Depth Verification of a Numerical Model for an Axisymmetric RC Dome

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