Performance assessment on high strength steel endplate connections after fire

Performance assessment on high strength steel endplate connections after fire

Qiang, X. (Tongji University)
Wu, N. (Tongji University)
Jiang, X. (Tongji University)
Bijlaard, F.S.K. (TU Delft Steel & Composite Structures)
Kolstein, M.H. (TU Delft Steel & Composite Structures)

2017

Purpose – This study aims to reveal more information and understanding on performance and failure mechanisms of high strength steel endplate connections after fire. Design/methodology/approach – An experimental and numerical study on seven endplate connections after cooling down from fire temperature of 550°C has been carried out and reported herein. Moreover, the provisions of European design standard for steel structures, Eurocode 3, were validated with test results of high strength steel endplate connections. Findings – In endplate connections, a proper design using a thinner high strength steel endplate can achieve the same failure mode, similar residual load bearing capacity and comparable or even higher rotation capacity after cooling down from fire. It is found that high strength steel endplate connection can regain more than 90 per cent of its original load bearing capacity after cooling down from fire temperature of 550°C. Originality/value – The post-fire performance of high strength steel endplate connection has been reported. The accuracy of Eurocode 3 for endplate connections is validated against test results. Keywords Numerical study, Experimental study, High strength steel, After fire, Endplate connection

Beam-to-column connections
Endplate connections
Fire condition
High strength steel
Structural fre performance

http://resolver.tudelft.nl/uuid:541ad6bc-6c71-44c7-a518-b6130b785b60

https://doi.org/10.1108/JSFE-11-2016-0018

2017-11-01

2040-2317

Journal of Structural Fire Engineering, 8 (2), 202-214

Institutional Repository

journal article

© 2017 X. Qiang, N. Wu, X. Jiang, F.S.K. Bijlaard, M.H. Kolstein