Progressive collapse resistance of single-layer latticed domes subjected to non-uniform snow loads

Tian, Li-min; He, Jiaxin; Zhang, Cheng-bing; Bai, Rui

doi:10.1016/j.jcsr.2020.106433

Cited by 20 publications

(4 citation statements)

References 20 publications

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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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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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“…Many researchers have studied the mechanical properties of classic grid shells [45][46][47]. As a result, it is worthwhile to investigate the mechanical performance of free-form grid shells.…”

Section: Mechanical Performancementioning

confidence: 99%

Digital and automatic design of free-form single-layer grid structures

Gao

et al. 2022

Automation in Construction

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“…The research on the progressive collapse resistance of structures has been a hot topic worldwide for many years due to the partial or total collapse of iconic and public buildings [1][2][3][4][5][6][7][8]. There are numerous studies about the progressive collapse behavior of reinforced concrete [9][10][11][12][13] and steel frame structures [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…The snap-through collapse behavior and internal force redistribution mechanism were also understood by the experimental studies of the Kiewitt Lamella and geodesic single-layer latticed domes [22]. Progressive collapse tests have been carried out to investigate the failure mode, dynamic response and collapse mechanism of a single-layer latticed K6 dome subjected to non-uniform snow loads [3]. According to the experiment results, the internal force redistribution and the oscillatory response of truss string structures with sudden rupture of cables have also been reported [23].…”

Section: Introductionmentioning

confidence: 99%

Robustness Analysis and Important Element Evaluation Method of Truss Structures

Feng

Sun

et al. 2021

Buildings

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Robustness and vulnerability are important evaluation criteria for structural safety to improve progressive collapse resistance. Modeling rapid evaluation on important elements in the conceptual analysis stage is an essential and efficient way to ensure the robustness of a design. This paper proposes an evaluation method for element importance by using structural strain energy, which can reflect the influence of geometric topology and external load distribution on the structural safety status simultaneously. Three simple planar trusses are chosen to clarify the proposed method. Moreover, the influences of geometric topology, boundary condition, stiffness distribution and load distribution on the element importance are investigated. This evaluation method also extends to the two spatial truss structures, regular quadrangular pyramid grid structures and chessboard-shaped pyramid grid structures. The distribution characteristics of important elements are obtained. This work defines the element importance distribution law of typical structures. It provides a method for rapid robustness analysis of general truss structures, which can be effectively integrated into the existing analysis platform.

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Progressive collapse resistance of single-layer latticed domes subjected to non-uniform snow loads

Cited by 20 publications

References 20 publications

Qualitative and quantitative analysis of tensegrity domes

Qualitative and quantitative analysis of tensegrity domes

Digital and automatic design of free-form single-layer grid structures

Robustness Analysis and Important Element Evaluation Method of Truss Structures

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