Unbraced pallet rack design in accordance with European practice–Part 1: Selection of the method of analysis

Bernuzzi, Claudio; Gobetti, Armando; Gabbianelli, Giammaria; Simoncelli, Marco

doi:10.1016/j.tws.2014.06.015

Cited by 23 publications

(15 citation statements)

References 14 publications

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“…To accurately reproduce the frame behaviour, the influence of warping effects must be considered in FEM modelling of mono-symmetric rack upright sections. This can be done using 7DOFs beam elements [16,17,18,19] or 3D modelling the uprights with either shell or solid elements.…”

Section: Frame Behaviourmentioning

confidence: 99%

Factors contributing to the transverse shear stiffness of bolted cold-formed steel storage rack upright frames with channel bracing members

Talebian

Gilbert

Baldassino

2019

Thin-Walled Structures

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Accurately determining the transverse shear stiffness of steel storage rack upright frames is essential in calculating the elastic buckling load, performing earthquake design and serviceability checks.International racking design specifications recommend different approaches to evaluate this stiffness.The Rack Manufacturers Institute (RMI) specification conservatively uses an analytical solution based on Timoshenko and Gere's theory while the European (EN15512) and Australian (AS4084) specifications recommend experimental testing to be conducted. Previous studies have shown that Finite Element Analyses (FEA), solely using beam elements, fail to reproduce experimental test results and may overestimate the transverse shear stiffness by a factor up to 25. This discrepancy is likely attributed to the local deformations occurring at the bolted joints. In this paper, a model to capture the transverse shear stiffness of upright frames is developed using shell elements and advanced FEA. Its accuracy is verified against published experimental test results performed on three commercially used upright frame configurations with lip-to-lip bracing pattern. The model accurately reproduces the experimental stiffness, with differences ranging from 2% to 17%. Based on the FE model, the factors contributing to the transverse shear deformation of the frames are quantified and discussed for both lip-to-lip and back-to-back bracing patterns. For lip-to-lip upright frames, results show that the local deformations at the end of bracing members contributes the most to the shear deformation of the frames. For back-to-back upright frames, bolt bending and axial deformation of braces contribute the most to the shear deformation of the frames. Results from this paper would assist the racking industry in improving their products by focusing on the factors influencing the most the behavior of the frames.

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Section: Frame Behaviourmentioning

confidence: 99%

Factors contributing to the transverse shear stiffness of bolted cold-formed steel storage rack upright frames with channel bracing members

Talebian

Gilbert

Baldassino

2019

Thin-Walled Structures

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“…Therefore, finite element modeling is the best solution to replace the need for the repeated experiments. There is a limited number of numerical studies on the RCB and the steel beam-column joint in previous years [2][3][4][5][6][7] and some experimental studies on the joint connection of RCB [8][9][10][11], but few studies have been done on the response of teardrop connections of RCB. This paper presents a comprehensive review on the teardrop connection, summarizing the methods for the determination of the properties of the connection, and describes the parametric studies.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Teardrop Connection of Rack Clad Building

Hoque¹,

Peng²,

Alam³

2021

International Conference on Civil, Structural and Transportation Engineering

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A rack clad building (RCB) is a kind of storage system where the raking forms part of the structure. The larger size of the RCB structure makes it dissimilar to the typical storage system. To enhance the lateral stability and the moment capacity in the unbraced down aisle direction, different types of connections are used in the rack clad building history. Teardrop connection which is one of the connection systems of the RCB, is a boltless connection where tabs used as connectors, are entered into the perforated hole of the cold formed column. The moment capacity, rotational stiffness, rotational capacity of the teardrop connection are the parameters that determine the efficiency in controlling the sway limitation in the down-aisle direction. There is limited research on the investigation of the mechanical behaviors and the design of teardrop connections. On this account, it is imperative to disclose the vital parameters related to the performance of the connector. This paper reviews the existing methods such as different types of experimental studies, finite element analysis, analytical model, component method which are used in determining the stiffness and the capacity of the connection. Finally, the influence of the geometric characteristics of the components such as thickness of the column, height of the beam, number of tabs, welding position of the beam to beam end connector, on the performance of the joint, has been presented in this paper.

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“…The drive-in and drive-thru rack systems incorporate rails throughout the depth of the rack for placing the pallets. The majority of steel rack structures are low or medium rise, and when the rack total height is less than 15-20 m [2], storage rack are usually located inside a building, which protects…”

Section: Introductionmentioning

confidence: 99%

Ponašanje Industrijskih Regala Pod Uticajem Probnog Opterećenja

Kukaras¹,

Jovanović²,

Žarković³

2019

Zbornik GFS

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This paper presents the results of testing of industrial steel rack subjected to maximum trial load. Testing confirmed that the overall behavior of the tested structure under exploitation load is highly dependent on the stiffness properties of beam-to-column connection. The obtained results showed that conventional approach to structural modeling by applying linear models and idealized behavior of connections can lead to wrong conclusion on its structural behavior and unsafe design of steel racks.

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Unbraced pallet rack design in accordance with European practice–Part 1: Selection of the method of analysis

Cited by 23 publications

References 14 publications

Factors contributing to the transverse shear stiffness of bolted cold-formed steel storage rack upright frames with channel bracing members

Factors contributing to the transverse shear stiffness of bolted cold-formed steel storage rack upright frames with channel bracing members

Investigation on Teardrop Connection of Rack Clad Building

Ponašanje Industrijskih Regala Pod Uticajem Probnog Opterećenja

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