Fire resistance of RC beams under design fire exposure

Wan-Yang Gao; Jian-Guo Dai; Jin-Guang Teng

doi:10.1680/jmacr.15.00329

Fire resistance of RC beams under design fire exposure

Wan-Yang Gao
, Jian-Guo Dai^*
, Jin-Guang Teng

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

42 Citations (Scopus)

Abstract

This paper presents the development of a design approach for predicting the fire resistance of reinforced concrete (RC) beams exposed to design fire. The proposed method is based on the energy-based time equivalence method in combination with a correction factor that is formulated as a function of concrete cover depth and compartmental characteristics. In the proposed approach, the fire resistance period of an RC beam under design fire exposure can be deduced from that of the same RC beam under standard fire exposure; the latter can be predicted using a set of explicit equations previously developed by the authors. The fire resistance data of RC beams under design fire exposure, which were used to formulate and validate the proposed approach, were generated using a reliable finite-element approach. The proposed design approach is shown to be accurate in predicting the fire resistance of RC beams under design fire exposure. © 2017, ICE Publishing. All rights reserved.

Original language	English
Pages (from-to)	402-423
Journal	Magazine of Concrete Research
Volume	69
Issue number	8
Online published	10 Mar 2017
DOIs	https://doi.org/10.1680/jmacr.15.00329
Publication status	Published - Apr 2017
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The authors are grateful for financial support from the National Basic Research Program of China (the 973 Program) (project 2012CB026201) and the National Natural Science Foundation of China (NSFC) (projects 51408521 and 51478406). They are also grateful for a Postdoctoral Fellowship awarded to the first author by the Faculty of Construction and Environment of The Hong Kong Polytechnic University.

Research Keywords

Beams & girders
Finite element methods
Temperature-related & thermal effects

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title = "Fire resistance of RC beams under design fire exposure",

abstract = "This paper presents the development of a design approach for predicting the fire resistance of reinforced concrete (RC) beams exposed to design fire. The proposed method is based on the energy-based time equivalence method in combination with a correction factor that is formulated as a function of concrete cover depth and compartmental characteristics. In the proposed approach, the fire resistance period of an RC beam under design fire exposure can be deduced from that of the same RC beam under standard fire exposure; the latter can be predicted using a set of explicit equations previously developed by the authors. The fire resistance data of RC beams under design fire exposure, which were used to formulate and validate the proposed approach, were generated using a reliable finite-element approach. The proposed design approach is shown to be accurate in predicting the fire resistance of RC beams under design fire exposure. {\textcopyright} 2017, ICE Publishing. All rights reserved.",

keywords = "Beams \& girders, Finite element methods, Temperature-related \& thermal effects",

author = "Wan-Yang Gao and Jian-Guo Dai and Jin-Guang Teng",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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AU - Gao, Wan-Yang

AU - Dai, Jian-Guo

AU - Teng, Jin-Guang

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2017/4

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N2 - This paper presents the development of a design approach for predicting the fire resistance of reinforced concrete (RC) beams exposed to design fire. The proposed method is based on the energy-based time equivalence method in combination with a correction factor that is formulated as a function of concrete cover depth and compartmental characteristics. In the proposed approach, the fire resistance period of an RC beam under design fire exposure can be deduced from that of the same RC beam under standard fire exposure; the latter can be predicted using a set of explicit equations previously developed by the authors. The fire resistance data of RC beams under design fire exposure, which were used to formulate and validate the proposed approach, were generated using a reliable finite-element approach. The proposed design approach is shown to be accurate in predicting the fire resistance of RC beams under design fire exposure. © 2017, ICE Publishing. All rights reserved.

AB - This paper presents the development of a design approach for predicting the fire resistance of reinforced concrete (RC) beams exposed to design fire. The proposed method is based on the energy-based time equivalence method in combination with a correction factor that is formulated as a function of concrete cover depth and compartmental characteristics. In the proposed approach, the fire resistance period of an RC beam under design fire exposure can be deduced from that of the same RC beam under standard fire exposure; the latter can be predicted using a set of explicit equations previously developed by the authors. The fire resistance data of RC beams under design fire exposure, which were used to formulate and validate the proposed approach, were generated using a reliable finite-element approach. The proposed design approach is shown to be accurate in predicting the fire resistance of RC beams under design fire exposure. © 2017, ICE Publishing. All rights reserved.

KW - Beams & girders

KW - Finite element methods

KW - Temperature-related & thermal effects

UR - https://www.scopus.com/pages/publications/85014822415

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DO - 10.1680/jmacr.15.00329

M3 - RGC 21 - Publication in refereed journal

AN - SCOPUS:85014822415

SN - 0024-9831

VL - 69

SP - 402

EP - 423

JO - Magazine of Concrete Research

JF - Magazine of Concrete Research

IS - 8

ER -

Fire resistance of RC beams under design fire exposure

Abstract

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