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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:ZHENG Wen-zhong,OUYANG Zhi-wei.Influence of key factors on deflection of bonded prestressed concrete simply supported slabs subjected to fire[J].Journal of Harbin Institute Of Technology(New Series),2010,17(5):615-621.DOI:10.11916/j.issn.1005-9113.2010.05.004.
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Influence of key factors on deflection of bonded prestressed concrete simply supported slabs subjected to fire
Author NameAffiliation
ZHENG Wen-zhong School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China 
OUYANG Zhi-wei School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China 
Abstract:
In order to validate the accuracy of nonlinear fire simulation programs,comparison analysis is carried out between simulation and experiment induced from small-scale specimens,and then fire resistance of large-scale prestressed concrete slabs is further investigated through parameter expansion.The influences on fire resistance ratings controlled by deflection are explored and discussed,including effective span,concrete cover thickness,load level,prestress degree,effective prestress,composite reinforcement index and other factors.The calculated results indicate that fire resistance ratings of large-scale bonded prestressed concrete simply supported slabs are bigger than those of small-scale ones.Finally,the calculation formulas of fire resistance ratings controlled by deflection are established,which rationally consider the influence of effective span,concrete cover thickness,load level,composite reinforcement index and so on key factors.
Key words:  bonded prestressed concrete  simply supported slabs  fire resistance ratings controlled by deflection
DOI：10.11916/j.issn.1005-9113.2010.05.004
Clc Number:TU378
Fund:

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