European design approaches for isolated cold-formed thin-walled beam–columns with mono-symmetric cross-section

Bernuzzi, Claudio; Simoncelli, Marco

doi:10.1016/j.engstruct.2014.12.040

Cited by 16 publications

(10 citation statements)

References 32 publications

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“…This method is rarely used by steel designers despite the fact that it shows promising results as identified in a recent research on mono-symmetric thin-walled cold-formed profiles [21]. Overall buckling resistance is verified when:…”

Section: The Ec3 Approachesmentioning

confidence: 96%

Unbraced steel frame design according to EC3 and AISC provisions

Bernuzzi

Cordova

Simoncelli

2015

Journal of Constructional Steel Research

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Section: The Ec3 Approachesmentioning

confidence: 96%

Unbraced steel frame design according to EC3 and AISC provisions

Bernuzzi

Cordova

Simoncelli

2015

Journal of Constructional Steel Research

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“…domains are always linear and independent of the moment distribution, owing to the linearity between axial load and bending moment and to the absence of moment distribution coefficient; the US domains are always the more severe ones and the differences from the EU domains increase with the decrease of ψ; the moment distribution influences remarkably the EU domains: in particular, when ψ ¼1 and 0 the associated domains are always quite linear and coincident with each other: in the case of opposite end equal moments (ψ ¼ À1) the domain results concave. The discrepancy from linearity increases with the decrease of ψ and the increase of L eff , as it appears clearly from It has to be pointed out that, in the framework of a previous study on mono-symmetric beam-columns subjected to lateral buckling [11], the European domains have always been presented as linear, independent of the ψ value. It is due to the values, practically constant, assumed by the lateral buckling moment coefficient k LT , to be used instead of k y , adopted in the present analysis.…”

Section: Comparative Applicationsmentioning

confidence: 87%

“…An increasing number of cases where design, fabrication and erection of rack structures are separated by large distances has been observed in recent years, as a result of rapid globalization and of the modest costs associated with the transportation of these very light-weight structures. Owners require the use of Research results are summarized in a two-part paper, which has been focused on bi-symmetric cross-section uprights, being the important effects associated with non-coincidence between the centroid and the cross-section shear center already in-vestigated in previous research [9][10][11]. Despite the fact that usually upright cross-sections present one axis of symmetry (Fig.…”

Section: Introductionmentioning

confidence: 99%

European and United States approaches for steel storage pallet rack design

Bernuzzi

2015

Thin-Walled Structures

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A very common application of cold-formed thin-walled steel members regards the industrial storage systems for goods and products, such as pallet racks, which are the core of the present paper. Owing to the increasing needs associated with globalization as well as the importance of the logistics, nowadays, rack manufactures must be highly competitive in the most industrialized countries: as a consequence, it is frequently required that engineers design in accordance with standards of the country where the storage rack will be in service. Due to peculiarities associated with the requirements of each code, different values of the rack load carrying capacity are expected and their quantification should be of great interest for commercial reasons: this is an important open question for designers and manufactures that up to now is without any practical response.A two-part paper has been written to summarize the main results of a comparative study on pallet rack design provisions currently adopted in Europe and the United States. Part 1 describes the key features of both codes, discussing similarities and differences associated with the admitted design procedures with reference to the member verification procedures and to the alternative analysis approaches. Furthermore, practical comparisons related to isolated members under compression and bending are proposed to allow a direct appraisal of structural performance.The companion paper (part 2: Practical applications) reports on an exhaustive analysis with regards to the contents herein introduced and applied to the design of 216 medium-rise semi-continuous pallet racks that are unbraced in the longitudinal direction.

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“…The analytical studies were compared with the results of experimental tests. Solid [2] and perforated [3] members under axial load and gradient moment (about the axis of symmetry) have been analysed by Bernuzzi et al Three different European design rules (EN15512, EC3-1-3 and EC3-1-1) are discussed, finding a substantial difference among them. The elastic buckling interaction between the axial load and the bending moment is modelled via finite elements.…”

Section: Introductionmentioning

confidence: 99%

07.14: Rack uprights under combined compression and bi‐axial bending: Experimental testing, numerical analysis and European standard approach

et al. 2017

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Pallet rack uprights are thin-walled mono-symmetric perforated open steel cross-sections subject to combined axial compression and bending. Loads (pallets of goods to be stored) are transmitted to uprights through the beams and the beam-upright connections. Bending about the major axis (cross aisle direction) is induced to the upright by the eccentricity of the beam end plate and the moment transmitted by the semi-rigid beam to upright connection. The bending about the minor axis (downaisle direction) is induced by eccentricity of the axis of the beam and the axis of the upright. The nature of these components, with perforations and buckling failure modes, together with combined actions, is a challenge in structural design. The main objective of this investigation is to provide a comprehensive empirical, numerical and analytical analysis of how bending combined with axial compression influences in the design load of pallet rack uprights. This paper presents experimental tests performed on uprights under combined compression and bending, and the FEA including nonlinear geometric and material behaviour. Both results are compared to the current European Standard, EN 15512, for Steel static storage systems. One type of cross section has been analysed, with a length that can produce different type of failure modes, mainly local and distortional buckling. The uprights have been analysed with different axial -bending combinations, which cover the field of combinations possible in the real load conditions of the rack.

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European design approaches for isolated cold-formed thin-walled beam–columns with mono-symmetric cross-section

Cited by 16 publications

References 32 publications

Unbraced steel frame design according to EC3 and AISC provisions

Unbraced steel frame design according to EC3 and AISC provisions

European and United States approaches for steel storage pallet rack design

07.14: Rack uprights under combined compression and bi‐axial bending: Experimental testing, numerical analysis and European standard approach

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