Fire Design of Steel Structures EC1: Actions on structures; Part 1-2: Actions on structure exposed to fire; EC3: Design of steel structures; Part 1-2: Structural fire design

by Franssen, Jean-Marc; Real, Paulo Vila

• ISBN13: 9783433031438
• ISBN10: 3433031436
• Edition: 2nd
• Format: Paperback
• Copyright: 2016-07-25
• Publisher: Ernst & Sohn

Summary

This book explains and illustrates the rules that are given in the Eurocodes for designing steel structures subjected to fire. After the first introductory chapter, Chapter 2 explains how to calculate the mechanical actions (loads) in the fire situation based on the information given in EN 1990 and EN 1991. Chapter 3 is dedicated to the models which represent the thermal actions created by the fire. Chapter 4 describes the procedures to be used to calculate the temperature of the steelwork from the temperature of the compartment and Chapter 5 shows how the information given in EN 1993-1-2 is used to determine the load bearing capacity of the steel structure. Chapter 6 presents the essential features that characterize the advanced calculation models, for thermal and mechanical response. The methods used to evaluate the fire resistance of bolted and welded connections are described in Chapter 7. Chapter 8 describes a computer program called `Elefir-EN? which is based on the simple calculation model given in the Eurocode and allows designers to quickly and accurately calculate the performance of steel components in the fire situation. Chapter 9 looks at the issues that a designer may be faced with when assessing the fire resistance of a complete building. This is done via a case study and addresses most of the concepts presented in the previous chapters.
For this second edition the content has been revised and extended. The book contains some new sections, e.g. a comparison between the simple and the advanced calculation, as well as additional examples.

Author Biography

Jean-Marc Franssen is Professor at the Department of Architecture, Geology, Environment and Construction of the University of Liege in Belgium. He is leading the group of fire safety engineering and is the Director of the Fire Resistance Laboratory. He is a member of the Technical Committee TC3 - Fire of ECCS. He founded the Structures in Fire (SiF) movement of which he is teh chairman of the Steering Committee. He was a member of the draft team of EN 1993-1-2.

Paulo Vila Real is Professor at the Dep. of Civil Engineering of the University of Aveiro in Portugal where he is the Director of the Fire Resistance Laboratory. He is a member of the Technical Committee TC3- Fire of ECCS and of the Steering Committee of the Structures in Fire (SiF) movement. In Portugal he is a member of the Technical Committee CT 115- Eurocodes where he was in charge of writing the National Annexes to the fire parts of the Eurocodes on actions, concrete, steel, composite and aluminium structures.

Table of Contents

INTRODUCTION
Relations between different Eurocodes
Scope of EN 1993-1-2
Layout of the book
MECHANICAL LOADING
General
Examples
Indirect actions
THERMAL ACTION
General
Nominal temperature-time curves
Parametric temperature-time curves
Zone models
CFD models
Localized fires
External members
TEMPERATURE IN STEEL SECTIONS
Introduction
The heat conduction equation and its boundary conditions
Advanced calculation model. Finite element solution of the heat conduction equation
Section factor
Temperature of unprotected steelwork exposed to fire
Temperature of protected steelwork exposed to fire
Internal steelwork in a void protected by heat screens
External steelwork
View factors in the concave part of a steel profile
Temperature in steel members subjected to localized fires
Temperature in stainless steel members
MECHANICAL ANALYSIS
Basic principles
Mechanical properties of carbon steel
Classification of cross-sections
Effective cross-sections
Fire resistance of structural members
Design in the temperature domain. Critical temperature
Design of continuous beams
Fire resistance of structural stainless steel members
Design examples
ADVANCED CALCULATION MODELS
General
Thermal response model
Mechanical response model
Some comparisons between the simple and the advanced calculation models
JOINTS
General
Strength of bolts and welds at elevated temperature
Temperature of joints in fire
Bolted connections
Design fire resistance of welds
Design examples
THE COMPUTER PROGRAM "ELEFIR-EN"
General
Brief description of the program
Default constants used in the program
Design example
CASE STUDY
Description of case study
Fire resistance under standard fire
Fire resistance under natural fire
REFERENCES
ANNEX A THERMAL DATA FOR CARBON STEEL AND STAINLESS STEEL SECTIONS
A.1. Thermal properties of carbon steel
A.2. Section factor Am /
V [m-1] for unprotected steel members
A.3. Section factor Ap /
V [m-1] for protected steel members
A.4. Tables and nomograms for evaluating the temperature in unprotected steel members subjected to the standard fire curve ISO 834
A.5. Tables and nomograms for evaluating the temperature in protected steel members subjected to the standard fire curve ISO 834
A.6. Thermal properties of some fire protection materials
A.7. Thermal properties of stainless steel
A.8. Tables and nomograms for evaluating the temperature in unprotected stainless steel members subjected to the standard fire curve ISO 834
A.9. Thermal properties of some fire compartment lining materials
ANNEX B INPUT DATA FOR NATURAL FIRE MODELS
B.1. Introduction
B.2. Fire load density
B.3. Rate of heat release density
B.4. Ventilation control
B.5. Flash-over
ANNEX C MECHANICAL PROPERTIES OF CARBON STEEL AND STAINLESS STEEL
C.1 Mechanical properties of carbon steel
C.2. Mechanical properties of stainless steel
ANNEX D TABLES FOR SECTION CLASSIFICATION AND EFFECTIVE WIDTH EVALUATION
ANNEX E SECTION FACTORS OF EUROPEAN HOT ROLLED IPE AND HE PROFILES
ANNEX F CROSS-SECTIONAL CLASSIFICATION OF EUROPEAN HOT ROLLED IPE AND HE PROFILES
F.1. Cross-sectional classification for pure compression and pure bending
F.2. Cross-sectional classification for combined, compression and bending moment