Reinforced concrete columns exposed to standard fire: Comparison among different constitutive models for concrete at high temperature

2015 ◽  
Vol 71 ◽  
pp. 310-323 ◽  
Author(s):  
P. Bamonte ◽  
F. Lo Monte
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Constitutive Models ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Standard Fire

Simplified P-M interaction curve model for reinforced concrete columns exposed to standard fire

2017 ◽  
Vol 19 (5) ◽  
pp. 545-553
Author(s):  
Deuck Hang Lee ◽  
Na-Rae Cheon ◽  
Minsu Kim ◽  
Jungmin Lee ◽  
Jae-Yuel Oh ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Standard Fire ◽  
Curve Model

Experimental Study on Strengthening with Bonded Steel Angles for Reinforced Concrete Columns after Fire

2013 ◽  
Vol 639-640 ◽  
pp. 1120-1126
Author(s):  
Guo Feng Wang ◽  
Kai Yu ◽  
Jun Hua Li ◽  
Dong Liang Qiu
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Columns ◽  
Fire Damage ◽  
Tension Zone ◽  
Test Results ◽  
Reinforced Concrete Columns ◽  
Standard Fire ◽  
Eccentric Compression ◽  
Steel Angles

The mechanical properties of fire-damage reinforced concrete columns strengthened with bonded steel angles were studied. Nine specimens were tested, including three normal temperature controlled columns, six heated under ISO834 standard fire. After exposure to fire, three of the six were rehabilitated with the bonded steel angles. It was shown by test results that the destructive properties of reinforced concrete columns with bonded steel angles may change and the small eccentric compression specimens may become large eccentric compression due to the steel angles increased the amount of steel in the tension zone of the specimen. In this research, compared with these under normal temperature, the bearing capacity of specimens which were exposure to fire was only ranged from 0.25 to 0.37 times. But the bearing capacity of specimens rehabilitated by the bonded steel angles can increase to 2.86 to 4.04 times of the originals and it can reach to the level of that in normal temperature.

Research on the Mechanical Properties of Fire-Damaged Reinforced Concrete Columns Strengthened with CFRP

2012 ◽  
Vol 193-194 ◽  
pp. 1429-1435
Author(s):  
Dong Liang Qiu ◽  
Kai Yu ◽  
Guo Feng Wang ◽  
Jun Hua Li
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Temperature Control ◽  
Concrete Columns ◽  
Load Bearing Capacity ◽  
Reinforced Concrete Columns ◽  
Load Bearing ◽  
Standard Fire ◽  
Reinforced Polymer

The mechanical properties of fire-damaged reinforced concrete columns rehabilitated by carbon fiber-reinforced polymer (CFRP) rods were studied. This study aims at the effectiveness of CFRP through the contrast test. Nine specimens were tested, including three normal temperature control specimens, and six specimens heated under ISO834 standard fire. After the specimens were exposed to fire, three of them were rehabilitated by CFRP. All specimens were loaded monotonically to failure in the same way. The results showed that the failure of reinforced concrete columns rehabilitated by CFRP was due to losing stabilization, whereas the others were material broken. Furthermore, because of the fire, the load-bearing capacity of specimens was all declined sharply compared with these at normal temperature. From this research, comparing with these normal temperature control specimens, the load-bearing capacity of specimens exposed to fire firstly was ranged from 0.25 to 0.37 times. But the ratio of the loading capacity of specimens rehabilitated by CFRP and normal temperature control ones was ranged from 0.54 to 0.67.

Failure Analysis of Reinforced Concrete Columns after High Temperature

2012 ◽  
Vol 157-158 ◽  
pp. 1578-1581 ◽  
Author(s):  
Li Li Bai ◽  
Tao Song
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Failure Analysis ◽  
Failure Modes ◽  
Limit State ◽  
Concrete Columns ◽  
State Equation ◽  
Single Factor ◽  
Reinforced Concrete Columns ◽  
Eccentric Compression

Mechanics models of RC(reinforced concrete) columns is established, after the limit state equation was formed, the failure modes of RC eccentric compression columns after high temperature is analyzed under considering various failure paths. Analysis results indicates that failure analysis is not safe under considering single failure mode, so comprehensive considering failure modes is more matching the true situation than only considering single factor when evaluate reliability of RC eccentric compression columns post-fire

scholarly journals Experimental and Computer Research of Reinforced Concrete Columns Under High Temperature Effects

2020 ◽  
Vol 16 (2) ◽  
pp. 55-61
Author(s):  
M.G. Surianinov ◽  
◽  
Yu.A. Otrosh ◽  
P.G. Balduk ◽  
I.F. Dadashov ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Temperature Effects ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Computer Research
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