Temperature analysis of steel structures protected by intumescent paint with steel claddings in fire

2020 ◽  
Vol 44 (7) ◽  
pp. 897-908
Author(s):  
Zhongcheng Ma ◽  
Jarmo Havula ◽  
Frantisek Wald ◽  
Kamila Cabova
Keyword(s):  
Steel Structures ◽  
Temperature Analysis ◽  
In Fire

scholarly journals Structural fire analysis of simple steel structures by using LS-DYNA explicit solver

2019 ◽  
Vol 52 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Zhongcheng Ma ◽  
Jarmo Havula ◽  
Markku Heinisuo
Keyword(s):  
Structural Response ◽  
Steel Structures ◽  
Shell Element ◽  
Fire Tests ◽  
Temperature Analysis ◽  
Structural Fire ◽  
Axial Forces ◽  
Analysis Technique ◽  
Explicit Solver ◽  
In Fire

When design steel structures, structural fire safety design is equally important as loading-bearing design. Currently, structural fire design is moving from prescriptive approach to performance-based approach. One of the key essential techniques for performance-based approach is the numerical analysis technique of steel structures in fire using advanced calculation models. In this paper, the structural fire analysis procedure from 2D temperature analysis to structural response using Ls-Dyna was developed and validated by the fire tests of a simply supported beam, a simple steel frame and a both axially and rotationally restrained steel column. 2D implicit temperature analysis is efficient in these cases and sufficient accuracy was achieved. Using explicit solver, structural response in fire can be simulated up to collapse with the considerations of the temperature-dependent material non-linearity and possible contacts in joints. Both beam element models and shell element models were developed and the structural responses were compared with the fire tests from literature. Results show that the developed modeling techniques using Ls-Dyna explicit solver can effectively capture the key behavior of steel structures in fires. These key behavior includes deformation responses of beam and column, axial forces developed due to restraints and fire resistance time.

Dynamic and Temperature Analysis Adopted in Fire Analysis and Design

2013 ◽  
pp. 191-238
Author(s):  
M. Y. H. Bangash ◽  
Y. F. Al-Obaid ◽  
F. N. Bangash
Keyword(s):  
Temperature Analysis ◽  
Analysis And Design ◽  
In Fire

Creep of the Plane Steel Frame at Elevated Temperature

2012 ◽  
Vol 446-449 ◽  
pp. 793-796
Author(s):  
Hui Zhu ◽  
Yu Ching Wu
Keyword(s):  
Numerical Model ◽  
Significant Contribution ◽  
Geometrical Nonlinearity ◽  
Steel Frames ◽  
Steel Structures ◽  
Element Formulation ◽  
Numerical Examples ◽  
Lagrangian Finite Element ◽  
In Fire ◽  
Plane Steel Frame

In this paper, co-rotational total Lagrangian finite element formulation is derived, and the corresponding numerical model is developed to study creeping behavior of plane steel frames in fire. Geometrical nonlinearity, material nonlinearity, high temperature creeping, and temperature rising rate are taken into account. To verify accuracy and efficiency of the numerical model, four prototypical numerical examples are analyzed using this model. Results are in a great agreement with solutions in literatures. Then the numerical model is used to analyze creeping behavior of the plane steel frames when temperature is lowering. The numerical results have significant contribution to resistance and protection for steel structures against disastrous fires.

Optimising design decision-making for steel structures in fire using a hybrid analysis technique

2017 ◽  
Vol 91 ◽  
pp. 532-541 ◽  
Author(s):  
Obinna Akaa ◽  
Anthony Abu ◽  
Michael Spearpoint ◽  
Sonia Giovinazzi
Keyword(s):  
Decision Making ◽  
Steel Structures ◽  
Design Decision ◽  
Hybrid Analysis ◽  
Analysis Technique ◽  
In Fire

scholarly journals Thermal Stress of Steel Structures of Tall Buildings in Fire

1983 ◽  
Vol 3 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Hikaru Saito ◽  
Hideki Uesugi ◽  
Akio Kodaira ◽  
Shu Konno
Keyword(s):  
Thermal Stress ◽  
Tall Buildings ◽  
Steel Structures ◽  
In Fire

Behaviour of steel frames under fire conditions

1999 ◽  
Vol 26 (2) ◽  
pp. 156-167 ◽  
Author(s):  
D I Nwosu ◽  
VKR Kodur
Keyword(s):  
Fire Resistance ◽  
Steel Frames ◽  
Load Ratio ◽  
Steel Structures ◽  
Point Of View ◽  
Frame Structures ◽  
Structural Behaviour ◽  
Analysis And Design ◽  
In Fire ◽  
Fire Conditions

A state-of-the-art review of the behaviour of steel frame structures in fire is presented. Results from different studies indicate that the behaviour of a complete structure is different from that of a single structural member under fire conditions from the point of view of fire resistance. Earlier studies also show that analysis and design of steel structures against fire based on their overall behaviour could lead to a reduction or the elimination of applied fire protection to certain structural members. The effects of continuity, restraint conditions, and load ratio on the fire resistance of frame structures are discussed. The beneficial aspects derived from considering overall structural rather than single-member behaviour in fire are illustrated through the analysis on two one-bay, one-storey, unprotected steel portal frames, a column, and a beam. Also comparison is made between the performance of a beam with different end restraints in fire. Results from the analyses indicate that the fire resistance of a member is increased when it is considered as part of a structure compared with when it is considered as a single member.Key words: steel, frames, fire resistance, buckling, loads, overall structural behaviour.

Sign in / Sign up

Export Citation Format

Share Document