The effect of load-induced thermal strain on flat slab behaviour at elevated temperatures

被引：25

作者：

Al Hamd, Rwayda Kh S. ^{[1
]}

Gillie, Martin ^{[2
]}

Warren, Holly ^{[3
]}

Torelli, Giacomo ^{[4
]}

Stratford, Tim ^{[5
]}

Wang, Yong ^{[1
]}

机构：

[1] Univ Manchester, Sch Mech Aerosp & Civil Engn, Manchester M13 9PL, Lancs, England

[2] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England

[3] AECOM, One Trinity Gardens,First Floor, Newcastle Upon Tyne NE1 2HF, Tyne & Wear, England

[4] Univ Cambridge, Engn Dept, Trumpington St, Cambridge CB2 1PZ, England

[5] Univ Edinburgh, Sch Engn, Sanderson Bldg,Robert Stevenson Rd,Kings Bldg, Edinburgh EH9 3FB, Midlothian, Scotland

来源：

FIRE SAFETY JOURNAL | 2018年 / 97卷

关键词：

PLASTIC-DAMAGE MODEL; PUNCHING SHEAR; CONCRETE SLABS;

D O I：

10.1016/j.firesaf.2018.02.004

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Several recent sets of experimental results on the punching shear behaviour of flat slabs in fire have produced apparently anomalous deflections results, where the slab deflections on heating are in the opposite direction to that expected if arising from free thermal expansion. Using numerical analysis, this paper shows that the results are explained by load-induced thermal strains (LITS). Using two independent modelling approaches, the profound effect of LITS on deflection behaviour is demonstrated. The findings have implications for the design of flat-slab structures to resist fire because ignoring LITS may result in non-conservative design predictions.

引用

页码：12 / 18

页数：7

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