Experimental and numerical analysis of stiffened curved plates as bottom flanges of steel bridges

Piculin, Sara (author), Može, Primož (author)

This paper deals with the experimental and numerical evaluation of the buckling behaviour and ultimate resistance of stiffened transversally curved panels subjected to uniform axial compression. Furthermore, a verification procedure for curved stiffened panels is proposed that gives a good estimation of the maximum loads obtained from experimental and numerical tests. The procedure is in line with the design methodology of EN 1993-1-5, accounting also for panel curvature. Nine large-scale tests were performed on longitudinally and transversally stiffened plates made of high strength steel, namely S500 and S700. They were subjected to compressive stresses up to collapse. The nine specimens comprised of flat and curved plates that differed in material grade and geometric parameters, such as panel thickness, aspect ratio, size and shape of stiffeners. The effects of different parameters on the plate's resistance to pure compression are discussed. Moreover, a numerical model built in the general-purpose code ABAQUS is presented and verified against the test results regarding initial stiffness, ultimate resistance and failure mode. Numerical simulations (FEA), based on the test panel geometry, the measured initial geometric imperfections and elasto-plastic material characteristics from tensile tests, demonstrate very good agreement with experimental results.

• Language: English
• Keywords: stiffened curved plates, experimental investigation, FEM, initial imperfections, steel bridges, uniform compression, civil engineering, engineering structures
• Work type: Scientific work
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: In print
• Publication version: Version of Record
• Year: 2020
• Number of pages: Str. 1-19
• Numbering: Letn. 164
• PID: 20.500.12556/RUL-114376
• UDC: 624.04
• ISSN on article: 0143-974X
• DOI: 10.1016/j.jcsr.2019.105822
• COBISS.SI-ID: 8964193
• Publication date in RUL: 24.02.2020

Record is a part of a journal

• Title: Journal of constructional steel research
• Shortened title: J. Constr. steel res.
• Publisher: Elsevier Science
• ISSN: 0143-974X
• COBISS.SI-ID: 1326341

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
• Licensing start date: 24.02.2020

Secondary language

• Language: Slovenian
• Keywords: ojačane ukrivljene pločevine, eksperimentalne preiskave, MKE, začetne nepopolnosti, jekleni mostovi, tlačne napetosti, gradbeništvo, gradbene konstrukcije

Projects

• Funder: EC - European Commission
• Project number: RFCS-2015-709782
• Name: OUTBURST