Behaviour of Steel Grade S275JR Columns under the Influence of High-Temperature Creep

Author:

Torić Neno,Boko Ivica,Divić Vladimir,Burgess Ian

Abstract

This paper presents a test study focused on determining the influence of high-temperature creep on the buckling of grade S275JR columns. Both capacity and stationary-creep column tests were performed within the study. The results obtained demonstrate that high-temperature creep influences a column’s load-bearing capacity, even at 400 °C if the column’s load ratio is above 87%. The reduction of load capacity due to creep was determined experimentally up to 600 °C, for which the failure due to creep occurred at load ratios above 57% of the capacity at 600 °C. The failure times for all the column creep tests occurred within 240 min of loading at constant temperature. Numerical modelling of the creep tests, including their constant-temperature capacity, was performed with the help of the research software Vulcan, by explicitly including a previously developed creep model for grade S275JR steel in the total strain formulation.

Funder

Hrvatska Zaklada za Znanost

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

Reference24 articles.

1. ASTM Standard E119-05: ASTM, Standard Methods of Fire Tests of Building Construction and Materials,2005

2. ISO 834: Fire Resistance Tests—Elements of Building Construction,1975

3. EN 1993-1-2:2005: Eurocode 3—Design of Steel Structures—Part 1-2: General Rules—Structural Fire Design,2005

4. Compendium of UK Standard Fire Test Data: Unprotected Structural Steel—1;Wainman,1988

5. Development of a high temperature material model for grade s275jr steel

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