Experimental and numerical analysis of fire scenarios involving two mechanically ventilated compartments connected together with a horizontal vent

2019 ◽  
Vol 43 (5) ◽  
pp. 514-529 ◽  
Author(s):  
Hugues Pretrel ◽  
Samuel Vaux
Keyword(s):  
Numerical Analysis ◽  
Mechanically Ventilated ◽  
Fire Scenarios ◽  
Horizontal Vent

Numerical analysis of lateral displacement of beam-column joints in concrete frame structures subjected to fire

2017 ◽  
Vol 21 (10) ◽  
pp. 1495-1509 ◽  
Author(s):  
Bo Wu ◽  
Jinsong Liu ◽  
Xiaomei Chen
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Lateral Displacement ◽  
Load Ratio ◽  
Time Dependent ◽  
Concrete Frames ◽  
Reinforced Concrete Column ◽  
Concrete Frame ◽  
Fire Scenarios ◽  
Column Joint

In this article, numerical analysis has been conducted for multi-story reinforced concrete frames under different fire scenarios to investigate the time-dependent lateral displacement of beam-column joint, which is almost the same as the lateral displacement at column end. Based on the numerical results, an empirical model has been proposed to approximately determine the time-dependent lateral displacement of the beam-column joint, and the calculated results using this model are compared with the numerical and test results provided by other researchers. Finally, the fire performance of axially-and-rotationally restrained reinforced concrete columns with time-dependent sidesway is numerically analyzed and compared with that without sidesway. It is found that (1) when the target floor is on fire, the influence of its non-adjacent floors’ exposure to fire on the lateral displacement of the joints at the target floor can be neglected, and the biggest error induced by this neglect is less than 10%; but the exposure of its adjacent floor(s) to fire leads to larger lateral displacement of these joints; and (2) fire endurance of the restrained reinforced concrete column with high nominal axial load ratio (e.g. 0.6) decreases significantly with the increasing of the column’s sidesway.

scholarly journals Smoke induced flow in two rooms mechanically ventilated and linked with a horizontal vent type opening

2014 ◽  
Vol 11 ◽  
pp. 486-498
Author(s):  
P. Hugues ◽  
V. Kevin ◽  
A. Laurent ◽  
V. Olivier
Keyword(s):  
Mechanically Ventilated ◽  
Induced Flow ◽  
Horizontal Vent

scholarly journals Numerical Analysis of Reinforced Concrete Frame Structures Under Various Fire Scenarios

2020 ◽  
Vol 20 (2) ◽  
pp. 189-195
Author(s):  
Ju-young Hwang ◽  
Hyo-Gyoung Kwak ◽  
Yonghoon Lee
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Fire Resistance ◽  
Structural Damage ◽  
Mechanical Strain ◽  
Frame Structure ◽  
Frame Structures ◽  
Rc Structures ◽  
Fire Scenarios ◽  
Fire Conditions

Since structural damage by fire in modern Reinforced Concrete (RC) structures causes significant loss of human life and property, it is important to evaluate the residual capacity of fire-damaged RC structures exposed to high temperatures. In this study, the behavior of fire-damaged RC frame structures (single-bay & three-bay frame), considering non-mechanical strain, was investigated by applying numerical analysis. The behavior mechanism was analyzed by numerical results of the single-bay frame and similar behavior was observed in each member of the three-bay frame. Principally, regarding the three-bay frame structure, the time of fire-resistance was evaluated under various fire scenarios, which included symmetrical and asymmetrical fires within the structure. The results of numerical analysis showed that, as the story load action on the structure increases, the fire-resistance time decreases. Finally, asymmetric fires should be considered for safety assessment against fire because the fire-resistance time under asymmetric fire conditions is shorter than that under symmetric fire conditions for all load conditions.

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