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Numerical Study on Flexural Strength of Reinforced Concrete members Exposed to Fire
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 Title & Authors
Numerical Study on Flexural Strength of Reinforced Concrete members Exposed to Fire
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 Abstract
This Paper describes a numerical method to evaluate the flexural strength of reinforced concrete members exposed to fire. An analytical method is developed for the moment-curvature relationship for the cross section which is subjected to high temperature. The method performs heat-transfer analysis for the cross sections and subsequently performs numerical analysis using the stress-strain relationships of concrete and reinforcing steel in various heat conditions. The results of the numerical studies are ; 1) the residual flexural strength exposing at high temperature is affected by the heating time, the depth of concrete cover and reinforcement ratio, 2) the residual flexural strength after exposed at high temperature is recovered of its original strength at minimum ratio of reinforcement, while members having half of maximum ratio and maximum ratio of reinforcement do not recover its original strength, 3) furthermore, the concrete may reach its maximum capacity before reinforcement yields in reinforced concrete members having maximum ratio of reinforcement.
 Keywords
reinforced concrete;flexural strength;stress-strain relationship;heat-transfer analysis;heating condition;
 Language
Korean
 Cited by
 References
1.
콘크리트구조설계기준, 1999.

2.
Guide for Determining the Fire Endurance of Concrete Elements, 1989.

3.
서울대학교 토목공학과 석사학위논문, 1995.

4.
Magazine of Concrete Reserch, 1986. vol.38. 136, pp.151-158

5.
Cement and Concrete Research, 1973. vol.3. pp.583-599

6.
Engineering Education System(EES), 1993.

7.
Proceedings of the ASCE, 1966. vol.92. ST5, pp.121-146

8.
NIST Special Publication 919, 1997.

9.
콘크리트 구조설계기준 건축구조물설계예제집, 2000.

10.
건축구조부분의 내화시험방법(KS F2257), 1993.

11.
99火災統計年報, 1999.

12.
대한건축학회논문집, 1989. vol.5. 4, pp.285-292

13.
東工大硏究所報, 1993.

14.
AIJ構造系論文報告集, 1988.

15.
日本建築學會大會學術講演梗槪集, 1995. pp.71-72

16.
日本建築學會大會學術講演梗槪集, 1988. pp.728-729

17.
Fire Safety Design and Concrete, 1993.

18.
(新訂)建築學大系, 1993. vol.21.

19.
日本建築學會大會學術講演梗槪集, 1992. pp.401-402