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Article
Publication date: 12 June 2017

Xuhong Qiang, Nianduo Wu, Xu Jiang, Frans Bijlaard and Henk Kolstein

This study aims to reveal more information and understanding on performance and failure mechanisms of high strength steel endplate connections after fire.

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Abstract

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.

Details

Journal of Structural Fire Engineering, vol. 8 no. 2
Type: Research Article
ISSN: 2040-2317

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