scholarly journals Finite Element Modelling for Structural Performance of Slim Floors in Fire and Influence of Protection Materials

2021 ◽  
Vol 11 (23) ◽  
pp. 11291
Author(s):  
Donatella de Silva ◽  
Naveed Alam ◽  
Ali Nadjai ◽  
Emidio Nigro ◽  
Faris Ali
Keyword(s):  
Finite Element ◽  
Fire Resistance ◽  
Steel Part ◽  
Experimental Investigations ◽  
Commercial Software ◽  
Coating Materials ◽  
Intumescent Coating ◽  
Simulation Tools ◽  
Floor Systems ◽  
In Fire

Slim floor systems are very common nowadays and various types are currently being used for the construction of high-rise buildings and car parks. Concrete in slim floor beams encases the steel beam section which helps to improve their fire resistance. Despite their higher fire resistance, several fire protection materials like intumescent coatings are often used to achieve a higher fire resistance where desired. The thermal properties and behaviour of various intumescent coating materials were previously studied through experimental investigations. This paper presents finite element analyses to simulate the response of unprotected and protected slim floor beams in fire using different simulation tools. For this purpose, fire tests conducted on unprotected slim floor beams and intumescent coating materials are modelled using research and commercial software. Results from the analyses are compared and verified with the available test data. These validated models are later combined to study the behaviour of protected slim floor beams in fire. Results from the study show that the research and the commercial software replicate the behaviour of slim floor beams and protection materials with good accuracy. Due to the presence of the intumescent coating, the protected slim floor beams displayed a better fire resistance as the temperature of the steel part remained below 400 °C even after 60-min of standard heating. The protected slim floor beams continued to support the external loads even after 120 min of heating.

scholarly journals VIRGILE project: The concept of virtual fire resistance facility for the assessment of construction products performance

Fire Research ◽  
2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Gildas Auguin ◽  
Virginie Dréan
Keyword(s):  
Fire Resistance ◽  
Fire Test ◽  
Test Facility ◽  
Simulation Tools ◽  
Stress Control ◽  
Fire Resistance Test ◽  
Construction Products ◽  
Accredited Laboratories ◽  
The Cost ◽  
In Fire

Construction industries products have to satisfy fire safety regulation, including technical approvals in fire resistance, by tests in accredited laboratories. Fire resistance tests lay down on a complex protocol, in which full size samples are settled in large furnaces able to reproduce severe time-dependent fire curves. The full-scale mounting and the cost of such tests could be a constraint for their development. In that context, the concept of virtual facility has been developed by Efectis during the VIRGILE project. The use and development of numerical simulation tools are an interesting complement to the fire tests. The developed tool aims to model a fire resistance test including interaction between sample and fire test facility. The virtual facility allows to better analyze and evaluate a large number of technical alternatives in order to find the most efficient technical and economical solutions. Moreover, numerical simulations may improve the testing conditions including thermal stress control and metrology. This paper presents an overview of the main results and applications achieved during the VIRGILE project in ten years.

Experimental and Numerical Investigations of Steel Profiles with Intumescent Coating Adjacent to Space-Enclosing Elements in Fire

2015 ◽  
Vol 6 (4) ◽  
pp. 237-246 ◽  
Author(s):  
Peter Kraus ◽  
Martin Mensinger ◽  
Florian Tabeling ◽  
Peter Schaumann
Keyword(s):  
Temperature Field ◽  
Numerical Model ◽  
Fire Protection ◽  
Experimental Investigations ◽  
Expansion Process ◽  
Intumescent Coating ◽  
Numerical Investigations ◽  
Steel Members ◽  
New Development ◽  
In Fire

In this paper, the research program “Optimized use of intumescent coating systems on steel members” is presented. The aim of the project is to quantify the influence of space-enclosing elements on the thermal behavior of supporting steel members. Those elements partially result in a restrained expansion of the fire protection system. Experimental investigations on coated beams and columns directly connected to space-enclosing elements are presented. Additionally, numerical simulations are performed for temperature field calculations of steel elements with intumescent coating. As a new development, the numerical model takes into account the expansion process of the intumescent coating.

scholarly journals FIRE RESPONSES AND RESISTANCE OF CONCRETE-FILLED STEEL TUBULAR FRAME STRUCTURES

2010 ◽  
Vol 10 (02) ◽  
pp. 253-271 ◽  
Author(s):  
MIN YU ◽  
XIAOXIONG ZHA ◽  
JIANQIAO YE ◽  
YI Li
Keyword(s):  
Finite Element ◽  
Fire Resistance ◽  
Load Capacity ◽  
Element Model ◽  
Dynamic Responses ◽  
Frame Structures ◽  
Steel Beams ◽  
Standard Fire ◽  
Cfst Columns ◽  
In Fire

This paper presents the results of dynamic responses and fire resistance of concrete-filled steel tubular (CFST) frame structures in fire conditions by using the nonlinear finite element method. Both strength and stability criteria are considered in the collapse analysis. The frame structures are constructed with circular CFST columns and steel beams of I-sections. In order to validate the finite element solutions, the numerical results are compared with those from a fire resistance test on CFST columns. The finite element model is then adopted to simulate the behavior of frame structures in fire. The structural responses of the frames, including the critical temperature and fire-resisting limit time, are obtained for the ISO-834 standard fire. Parametric studies are carried out to show their influence on the load capacity of the frame structures in fire. Suggestions and recommendations are presented for possible adoption in future construction and design of similar structures.

scholarly journals Influence of Brick Walls on the Temperature Distribution in Steel Columns in Fire

10.14311/1077 ◽  
2009 ◽  
Vol 49 (1) ◽  
Author(s):  
António J. P. Moura Correia ◽  
Joao Paulo C. Rodrigues ◽  
Valdir Pignatta e Silvac
Keyword(s):  
Finite Element ◽  
Temperature Distribution ◽  
Fire Resistance ◽  
Experimental Models ◽  
Finite Element Program ◽  
Steel Columns ◽  
Element Program ◽  
The University ◽  
In Fire ◽  
Resistance Tests

This paper reports on a study of steel columns embedded in walls in fire. Several fire resistance tests were carried out at the Laboratory of Testing Materials and Structures of the University of Coimbra, in Portugal. The temperatures registered in several points of the experimental models are compared with those obtained in numerical simulations carried out with the SUPERTEMPCALC finite element program. 

Fire and Post-Fire Performance of Space Grid Structures

2012 ◽  
Vol 238 ◽  
pp. 621-624 ◽  
Author(s):  
Guang Yong Wang ◽  
Xing Qiang Wang ◽  
Guang Wei Liu
Keyword(s):  
Finite Element ◽  
Failure Modes ◽  
Fe Model ◽  
Fire Damage ◽  
Fire Performance ◽  
Membrane Action ◽  
Load Bearing Capacity ◽  
Space Grid ◽  
Deformation Stress ◽  
In Fire

A fire performance finite element (FE) model of space grid structures in fire and after fire is proposed, and deformation, stress redistribution, failure modes of grid structures are also studied. The result shows that tensile membrane action arises when the grid is loaded after fire, and the load bearing capacity after fire is reduced by fire damage.

scholarly journals Pantograph catenary dynamic optimisation based on advanced multibody and finite element co-simulation tools

2014 ◽  
Vol 52 (sup1) ◽  
pp. 338-354 ◽  
Author(s):  
Jean-Pierre Massat ◽  
Christophe Laurent ◽  
Jean-Philippe Bianchi ◽  
Etienne Balmès
Keyword(s):  
Finite Element ◽  
Dynamic Optimisation ◽  
Simulation Tools

Study on the Data-Bases for Fire Engineering Design of Structural Steels Members

2012 ◽  
Vol 628 ◽  
pp. 156-160
Author(s):  
In Kyu Kwon ◽  
Hyung Jun Kim ◽  
Heung Youl Kim ◽  
Bum Yean Cho ◽  
Kyung Suk Cho
Keyword(s):  
Bearing Capacity ◽  
Fire Resistance ◽  
Engineering Method ◽  
Fire Tests ◽  
Structural Members ◽  
Data Bases ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
In Fire ◽  
Resistance Performance

Structural steel has been used since the early 1970’s in Korea as primary structural members such as columns, beams, and trusses. The materials have much higher strength such as fast construction, high load bearing capacity, high construction quality but those have a fatal weakness as well. Load-bearing capacity is going down when the structural members are contained in fire condition. Therefore, to protect the structural members made of steels from the heat energy the fire resistance performance required. Generally, the fire resistance performance have evaluated from the exact fire tests in fire furnaces. But the evaluation method takes much more time and higher expenses so, the engineering method requires. The engineering method not only adopts a science but also an engineering experience. In this paper, to make various data-bases for evaluation of structural members such as columns(H-section, RHS), beams, loaded fire tests were conducted and derived not only each limiting temperature but also fire resistance respectively.

The calculation of required fire resistance limits for engineering structures of technological pipe racks at oil and gas processing plants on the basis of an evaluation of the time needed for personnel evacuation and rescue in case of fire

2021 ◽  
Vol 30 (5) ◽  
pp. 58-65
Author(s):  
A. Yu. Shebeko ◽  
Yu. N. Shebeko ◽  
A. V. Zuban
Keyword(s):  
Fire Resistance ◽  
Oil And Gas ◽  
Probabilistic Method ◽  
Processing Plant ◽  
Engineering Structures ◽  
Gas Processing ◽  
Processing Plants ◽  
The One ◽  
In Fire ◽  
Rescue Time

Introduction. GOST R 12.3.047-2012 standard offers a methodology for determination of required fire resistance limits of engineering structures. This methodology is based on a comparison of values of the fire resistance limit and the equivalent fire duration. However, in practice incidents occur when, in absence of regulatory fire resistance requirements, a facility owner, who has relaxed the fire resistance requirements prescribed by GOST R 12.3.047–2012, is ready to accept its potential loss in fire for economic reasons. In this case, one can apply the probability of safe evacuation and rescue to compare distributions of fire resistance limits, on the one hand, and evacuation and rescue time, on the other hand.A methodology for the identification of required fire resistance limits. The probabilistic method for the identification of required fire resistance limits, published in work [1], was tested in this study. This method differs from the one specified in GOST R 12.3.047-2012. The method is based on a comparison of distributions of such random values, as the estimated time of evacuation or rescue in case of fire at a production facility and fire resistance limits for engineering structures.Calculations of required fire resistance limits. This article presents a case of application of the proposed method to the rescue of people using the results of full-scale experiments, involving a real pipe rack at a gas processing plant [2].Conclusions. The required fire resistance limits for pipe rack structures of a gas processing plant were identified. The calculations took account of the time needed to evacuate and rescue the personnel, as well as the pre-set reliability of structures, given that the personnel evacuation and rescue time in case of fire is identified in an experiment.

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