NONLINEAR FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE BEAMS IN FIRE

Liao Yanfen; Qi Yaqing; Ma Xiaoqian

doi:10.13204/j.gyjz201107007

Volume 41 Issue 7

Dec. 2014

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Liao Yanfen, Qi Yaqing, Ma Xiaoqian. NONLINEAR FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE BEAMS IN FIRE[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(7): 31-37. doi: 10.13204/j.gyjz201107007

Citation:

Liao Yanfen, Qi Yaqing, Ma Xiaoqian. NONLINEAR FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE BEAMS IN FIRE[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(7): 31-37. doi: 10.13204/j.gyjz201107007

Liao Yanfen, Qi Yaqing, Ma Xiaoqian. NONLINEAR FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE BEAMS IN FIRE[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(7): 31-37. doi: 10.13204/j.gyjz201107007

Citation:

Liao Yanfen, Qi Yaqing, Ma Xiaoqian. NONLINEAR FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE BEAMS IN FIRE[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(7): 31-37. doi: 10.13204/j.gyjz201107007

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NONLINEAR FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE BEAMS IN FIRE

doi: 10.13204/j.gyjz201107007

1.
School of Electric Power,South China University of Technology,Guangzhou 510640,China

Received Date: 2010-12-03
Publish Date: 2011-07-20

Abstract

Abstract

Through numerical simulation of the whole process of heat transfer and deformation on three different conditions groups of reinfored concrete beams,it is analysed the non-linear changing process of the temperature distribution and structural deformation of reinfored concrete beams in fire.Based on thermal characteristics and the temperature-strain-stress constitutive characteristics of reinforced concrete beams it is analysied the influences of the evolutionary processes of the reinfored concrete beams temperature distribution in fire,as well as reinforcement ratio,initial load and heating time on the fire resistance capacity of reinfored concrete beams.Results show that the overall instability of the beams is caused by the reduction of material strength,weight and the initial load,as well as the internal stress because of the uneven heating in fire.The influences of initial load on the residual bearing capacity is little,but increase the number of rebars can effectively improve the fire resistance capacity of reinforced concrete beams.
- fire,
- reinfored concrete beams,
- non-linear,
- residual bearing capacity

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References(16)

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