Experimental response of hot-rolled stainless steel angle columns

Filipović, Aljoša (avtor), Dobrić, Jelena (avtor), Baddoo, Nancy (avtor), Može, Primož (avtor)

This paper reports on experiments addressing the buckling and collapse behaviour of pin-ended hot-rolled stainless steel equal-leg angle columns under pure axial compression, aiming to provide reliable experimental data needed to develop explicit design guidelines for hot-rolled stainless steel angle columns currently absent in European standard. The systematic experimental programme included two test groups of specimens with nominal dimensions of 60 6 mm and 100 10 mm produced from austenitic grade EN 1.4301, and involved tensile material tests, geometric imperfection measurements, residual stress measurements, 6 stub column tests and 20 global compression tests. A wide range of column slenderness ratios was carefully selected to account for both elastic and inelastic failure characteristics including flexural and flexural%torsional modes and the influence of the legs% width-to-thickness ratios. The test setup and procedure together with the key experimental results and characterised failure modes, were fully reported and discussed. The test results were compared with those predicted using the design methods for compressed stainless steel angle columns provided in European and North American standards. It was observed that the specifications offer conservative strength predictions of the tested columns, primarily due to the lower distribution of initial geometric imperfections of tested columns in comparison with the permissible fabrication tolerances that are usually used as the basis of stability checks in codified design.

• Jezik: Angleški jezik
• Ključne besede: civil engineering, stainless steel, experiment, equal-leg angle section, hot-rolled, residual stress, column buckling
• Vrsta gradiva: Znanstveno delo
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Poslano v recenzijo: 07.10.2020
• Datum sprejetja članka: 07.03.2021
• Datum objave: 26.03.2021
• Leto izida: 2021
• Št. strani: Str. 1-21
• Številčenje: Letn. 163, št. 107659
• PID: 20.500.12556/RUL-127275
• UDK: 624.07
• ISSN pri članku: 0263-8231
• DOI: 10.1016/j.tws.2021.107659
• COBISS.SI-ID: 58659587
• Datum objave v RUL: 01.06.2021

Gradivo je del revije

• Naslov: Thin-walled structures
• Skrajšan naslov: Thin-walled struct.
• Založnik: Elsevier
• ISSN: 0263-8231
• COBISS.SI-ID: 26529536

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: gradbeništvo, nerjavno jeklo, eksperiment, enakokraki kotnik, vroče valjanje, zaostale napetosti, uklon stebra

Projekti

• Financer: MESTD - Ministry of Education, Science and Technological Development of Republic of Serbia
• Številka projekta: 200092