Stability analysis of semirigid steel scaffolding

Chan, Siu Lai; Zhou, Zhi; Chen, W. F.; Peng, Jen‐Kuei; Pan, Ade

doi:10.1016/0141-0296(95)00011-u

Cited by 45 publications

(26 citation statements)

References 4 publications

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“…The ultimate bearing capacities were determined by both FE numerical analysis method presented in Section 4 and the proposed prediction formula (1). Comparison results are listed in Table 8.…”

Section: Design Methodsmentioning

confidence: 99%

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Structural Performance and Design Method of New Mortise–tenon Full Steel-Tube Scaffold

2018

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A mortise-tenon steel-tube scaffold, a new steel-tube scaffold, was presented based on ancient mortise-tenon joint in wood structure. Because of better joint mechanics and higher bearing capacity than coupler-type steel-tube scaffold, this new scaffold possesses good market potential. Based on an analysis of the bearing mechanism, a finite element numerical analysis model for the mortise-tenon steel-tube scaffold was established in this study, which was validated as reasonable and accurate by experiment data. Influencing laws of storey height, vertical member interval, X-bracing layout, overall structure height, height of bottom horizontal tube, and height of upper cantilever bar on the mortise-tenon steel-tube scaffold were determined through parameter analysis. A simplified calculation formula of ultimate bearing capacity was established, which verified by FEM results and test data. Research results provide important references for future in-depth studies and engineering applications of the mortise-tenon steel-tube scaffold.

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Section: Design Methodsmentioning

confidence: 99%

“…Chan et al [1], Peng et al [2][3][4][5][6], Yu et al [7], and Weesner and Jones [8] conducted numerous experimental and theoretical studies on the stability capacity and design method of door-type scaffolds. Micha and Blazik-Borowa [9] determined the capacity of the key joint in inserting-type scaffolds using numerical analysis.…”

Section: Introductionmentioning

confidence: 99%

Structural Performance and Design Method of New Mortise–tenon Full Steel-Tube Scaffold

2018

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“…The decks of most of the systems available at the European market are similar to each other, which also allow their use in other systems. In the study below, comes the description of the steel decks produced by Altrad Mostostal, the decks being made of S235JRG2 steel with Young's modulus equal to E = 2.05 × 10 8 kPa, the weight density γ = 78.5 kN/m 3 , and the yield strength f d = 283 MPa. Decks are available in two widths-160 and 320 mm-and in the lengths 732, 1088, 1572, 2072, 2572, and 3072 mm.…”

Section: The Structure Of Platformsmentioning

confidence: 99%

“…1 through excitations applied at the centre of gravity of the sides of element No. 3. Only a precise model with the load applied in this way could be subjected to a final static analysis allowing the formulation of conclusions concerning the stresses inside the decks.…”

Section: The Analysis Of the Load Capacity Of The Platformsmentioning

confidence: 99%

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Numerical Models of Scaffolding Decks and Their Applications

Błazik‐Borowa

Robak

2017

Int J Civ Eng

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advantage of this fact. Unfortunately, a side effect of such an activity is the reduced load capacity. The task of the designer, however, is to design a structure with the lowest possible material consumption and which will achieve the assumed load capacity. The use of decks on scaffoldings is essential, because it is on them that workers (the users of scaffoldings) move, and thus, the proper design of platforms ensures the safety of these people. Furthermore, the decks play another role too, i.e., they connect other structural elements of scaffoldings and brace the structure in the horizontal plane. On the other hand, decks have complex shapes, which make it difficult to model this part of a scaffolding in computer analysis, and necessitates the application of equivalent schemes. Several numerical models of decks, together with their use in the assessment of the load capacity of platforms and then in the static analysis of the entire scaffolding, are presented in the study. The numerical results are compared with the results of the laboratory test which were available, courtesy of Altrad Mostostal. The numerical researches concern the engineering application, and therefore, they are mainly conducted for linear material properties. A similar approach to engineering problems is presented in such works as [1,2].Before turning to the presentation of the methods for creating numerical models of decks and their use in the static analysis, it ought to be pointed out that the issues of the static work of scaffoldings are rarely featured in the literature. The authors encountered barely a few works addressing strength tests [3][4][5][6][7][8] or analyses of the reasons for collapses [9][10][11]. And thus, Halperin and McCann [11] in their work, which tests the load capacity of structures built in the eastern regions of the USA, stated that 32% of scaffoldings are threatened with accidents or disasters. Moreover, it is also stated that there exists no correlation between the poor condition of the scaffolding and the region, the dimensions Abstract This study presents methods for numerical modelling and the static computer analysis of steel decks fixed on scaffoldings. The main problem raised here is the method of creating models of a single deck and determination of the accuracy of every model for various design situations: the analysis of state stress in components of decks, the strength analysis of scaffolding, where decks can be loaded by untypical the arrangement of materials, and the strength analysis of full scaffoldings. The analysis of a state stress in components of a deck requires a detailed model. The analyses of scaffoldings with load by materials have to be performed with using more simple models of platforms. The static-strength analysis of full scaffoldings with many frame elements can be performed if the simplest models of decks are used. In this paper, the sets of truss elements replace the stiffness of scaffolding decks.

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Design methods of integral‐lift tubular steel scaffolds for high‐rise building construction

Feng

Yuan

2010

Structural Design Tall Build

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In this paper, we discuss the design and calculation methods of integral‐lift scaffolds under condition of operating, climbing up/down and falling. Dead loads, construction live loads and wind loads for integral‐lift scaffolds are given in this paper. The key factors such as additional load factor κ are introduced and defined for recommendation as well. Load and resistance factor design method based on probability theory is introduced for the design of the main load‐bearing structures. Herein, the additional partial safety factor of material strength γ′m is introduced specifically for scaffolding frames which are often frequently reused under poor outdoor conditions. Some important checking methods proposed specifically for integral‐lift scaffolds such as checking of anti‐slide strength of couplers and anti‐overturning analyses are also presented. Meanwhile, allowable strength design method is suggested in the design of the lifting equipments, suspending rods and slings. The proposed methods in this paper will be useful guidelines for safe design of integral‐lift scaffolds. Copyright © 2010 John Wiley & Sons, Ltd.

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Stability analysis of semirigid steel scaffolding

Cited by 45 publications

References 4 publications

Structural Performance and Design Method of New Mortise–tenon Full Steel-Tube Scaffold

Structural Performance and Design Method of New Mortise–tenon Full Steel-Tube Scaffold

Numerical Models of Scaffolding Decks and Their Applications

Design methods of integral‐lift tubular steel scaffolds for high‐rise building construction

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