Comments on calculation of temperature in fire-exposed bare steel structures in prEN 1993-1-2: Eurocode 3—design of steel structures—Part 1–2: general rules—structural fire design

2005 ◽  
Vol 40 (2) ◽  
pp. 191-192 ◽  
Author(s):  
U. Wickstrom
Keyword(s):  
Steel Structures ◽  
Structural Fire ◽  
General Rules ◽  
Eurocode 3 ◽  
Bare Steel ◽  
In Fire ◽  
Fire Design

scholarly journals BEHAVIOUR OF ALUMINIUM STRUCTURES IN FIRE, A review

2016 ◽  
Author(s):  
Davor Skejić ◽  
Ivan Ćurković ◽  
Marija Jelčić Rukavina
Keyword(s):  
Carbon Steel ◽  
Structural Material ◽  
Fire Resistance ◽  
Steel Structures ◽  
Future Research ◽  
Surface Emissivity ◽  
Structural Behaviour ◽  
Structural Fire ◽  
In Fire ◽  
Fire Design

The interest in the application of aluminium as a structural material has been greatly increased in recent years. However, behaviour of aluminium structures when exposed to fire is still relatively unresearched. Due to low melting temperature of the alloy, aluminium structures have low fire resistance, but aluminium is reflective and has surface emissivity which is more than two times lower compared to carbon steel. The Eurocode facing this issue (EN 1999-1-2) is based mainly on the Eurocode for structural fire design of steel structures (EN 1993-1-2) and therefore is not fully suitable for the application on aluminium structures. Here, an overview of the structural behaviour of aluminium structures exposed to fire is given through the comparison with steel structures. As a conclusion, priorities for a future research are highlighted, which should provide a base for the next generation of modern codes for structural fire design of aluminium structures.

Lessons from the Cardington Fire Tests: Applications in the Performance-Based Fire Design

2019 ◽  
Author(s):  
Nicoletta Galluzzi ◽  
Mark A. O'Connor
Keyword(s):  
Steel Structures ◽  
Lessons Learned ◽  
Fire Tests ◽  
Structural Fire ◽  
Practical Applications ◽  
Fire Engineering ◽  
Efficient Construction ◽  
In Fire ◽  
Structural Fire Engineering ◽  
Fire Design

<p>Performance-based fire design represents one of the routes available to design for structural fire safety. The development of the approach and the assessment of the behaviour of multi-storey composite steel structures in fire have been mainly developed from the understanding gained from the Cardington full-scale fire tests carried out between 1995-96. The tests not only contributed to the understanding of the inherent fire resistance of steel-framed buildings, but also provided significant data to validate computational finite element (FE) models which are now used to develop optimum fire protection designs for safety, sustainability and economy.</p><p>By adopting the performance-based approach to structural fire engineering, more economical designs and efficient construction programmes of buildings can be achieved. Additionally, performance-based design can enhance the levels of safety by providing a better understanding of the actual behaviour of the structure during fire.</p><p>This paper outlines the lessons learned from the Cardington fire tests and the development of the key outcomes in the last 20 years in the advancement of the performance-based fire design process. Examples of practical applications of performance-based fire design on large and tall steel-framed buildings carried out by the authors are given along with the main challenges and technical issues.</p>

Comparison of Simplified and Advanced Design of Steel Structures in Fire

2018 ◽  
Vol 1147 ◽  
pp. 24-29
Author(s):  
Jerneja Kolšek ◽  
Andrej Rebec
Keyword(s):  
Critical Temperature ◽  
Fire Resistance ◽  
Steel Structures ◽  
Steel Beam ◽  
Steel Girder ◽  
Structural Fire ◽  
Simplified Procedures ◽  
Plate Connection ◽  
In Fire ◽  
Structural Fire Resistance

This paper presents the possible deviations between “realistic” (performance-based) calculations of fire resistance of steel structures and corresponding calculations made by one of the often used simplified (prescriptive) procedures of EN 1993-1-2 i.e. the method of critical temperature (MCT). The comparison is done for a case of an assembly consisting of a steel beam and a steel girder connected to each other by a bolted fin-plate connection. For such structure the MCT method suggests that the structural fire resistance is 50 minutes. However, the realistic fire resistance calculated by an advanced performance-based procedure is evaluated to 44 minutes. Although the discrepancy between the results of both methods is not significant in the presented case, this finding implies that MCT can be on the unsafe side for some cases. More future debates and clarifications are therefore encouraged regarding the actual limits of the applicability of the simplified procedures.

scholarly journals The structural fire design of concrete structures with externally bonded reinforcement and fire protection system

2013 ◽  
Vol 12 (1) ◽  
pp. 179-186
Author(s):  
Piotr Turkowski
Keyword(s):  
Fire Protection ◽  
Test Procedure ◽  
Structural Members ◽  
Rc Structures ◽  
Structural Fire ◽  
Building Research Institute ◽  
Protection Systems ◽  
Externally Bonded ◽  
In Fire ◽  
Fire Design

This work describes the structural fire design process of RC structures with externally bonded reinforcement. First part is based on the calculation method given in EN 1992-1-2 and addresses the question whether the fire protection of externally bonded reinforcement is necessary in every situation? The second part shows what such fire protection should look like and how it should be designed. Moreover, a test procedure for determining the effectiveness of applied fire protection systems to concrete structural members reinforced with FRP, used in Fire Testing Laboratory of Building Research Institute (ITB) is presented.

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.

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