scholarly journals Simple calculation model for evaluating the fire resistance of unreinforced concrete filled tubular columns

2012 ◽  
Vol 42 ◽  
pp. 231-244 ◽  
Author(s):  
Ana Espinos ◽  
Manuel L. Romero ◽  
Antonio Hospitaler
Keyword(s):  
Fire Resistance ◽  
Simple Calculation ◽  
Calculation Model ◽  
Tubular Columns

scholarly journals Sensitivity analysis of fire resistance of a composite floor slab

2018 ◽  
Vol 174 ◽  
pp. 01019
Author(s):  
Joanna Kaliszuk ◽  
Elżbieta Grochowska
Keyword(s):  
Sensitivity Analysis ◽  
Fire Resistance ◽  
Simple Calculation ◽  
Calculation Model ◽  
Time Curve ◽  
Composite Slab ◽  
Standard Temperature ◽  
Supporting Structure ◽  
Bending Resistance ◽  
Temperature Time

The paper presents a sensitivity analysis of design bending resistance of a composite slab rib in a fire situation to a change of the value of basic variables. The analysis was carried out for a composite slab being an element of a supporting structure of a reinforced floor referred to in [1, 2]. The calculations were made for a simple calculation model and the standard temperature-time curve according to [6, 7]. The set of basic variables was limited to X1 = {(y, z), h1, fy,a, fy,s, fc}.

scholarly journals Fire Resistance of Axially Loaded Slender Concrete Filled Steel Tubular Columns – Development of a Three-Dimensional Numerical Model and Comparison with Eurocode 4

10.14311/1089 ◽  
2009 ◽  
Vol 49 (1) ◽  
Author(s):  
A. Espinós ◽  
A. Hospitaler ◽  
M. L. Romero
Keyword(s):  
Numerical Model ◽  
Fire Resistance ◽  
Numerical Models ◽  
Three Dimensional ◽  
Calculation Model ◽  
Construction Technology ◽  
Tubular Columns ◽  
Highly Nonlinear ◽  
Structural Engineers ◽  
Simplified Calculation

In recent years, concrete filled tubular (CFT) columns have become popular among designers and structural engineers, due to a series of highly appreciated advantages: high load-bearing capacity, high seismic resistance, attractive appearance, reduced column footing, fast construction technology and high fire resistance without external protection. In a fire, the degradation of the material properties will cause CFT columns to become highly nonlinear and inelastic, which makes it quite difficult to predict their failure. In fact, it is still not possible for analytical methods to predict with enough accuracy the behaviour of columns of this kind when exposed to fire. Numerical models are therefore widely sought. Many numerical simulations have been carried out worldwide, without obtaining satisfactory results. This work proposes a three-dimensional numerical model for studying the actual fire behaviour of columns of this kind. This model was validated by comparing the simulation results with fire resistance tests carried out by other researchers, as well as with the predictions of the Eurocode 4 simplified calculation model. 

Practical Calculation Method for the Bearing Capacity at High Temperature of Concrete Filled Steel Tubular Columns Subjected to Fire

2014 ◽  
Vol 1065-1069 ◽  
pp. 1358-1362
Author(s):  
Jin Sheng Han ◽  
Hao Ran Liu ◽  
Shu Ping Cong
Keyword(s):  
High Temperature ◽  
Bearing Capacity ◽  
Fire Resistance ◽  
Calculation Method ◽  
Engineering Application ◽  
Practical Calculation ◽  
Tubular Columns ◽  
Calculation Results ◽  
Simplified Calculation ◽  
Simplified Calculation Method

The fire resistance of concrete filled steel tubular column is usually obtained by the numerical analysis method, which is difficult to operate and not convenient in the actual civil engineering. So it is necessary to study the simplified calculation method. A large number of numerical simulation results of the temperature distribution of the section and the bearing capacity at high temperature of the concrete filled steel tubular columns are analyzed. The influences of secondary parameters are simplified. The simplified calculation method at 150 min and 180 min for the bearing capacity at high temperature of concrete filled steel tubular columns subjected to axial compression and fire is presented on the basis of comprehensive analysis of the numerical calculation results. The calculation results can be used as the basis to judge the fire resistance. It is shown by the comparison with the experimental results that the precision of the simplified calculation method can meet the requirements of engineering application.

FE modelling and fire resistance design of concrete filled double skin tubular columns

2011 ◽  
Vol 67 (11) ◽  
pp. 1733-1748 ◽  
Author(s):  
Hui Lu ◽  
Xiao-Ling Zhao ◽  
Lin-Hai Han
Keyword(s):  
Fire Resistance ◽  
Fe Modelling ◽  
Tubular Columns ◽  
Double Skin

scholarly journals STUDY ON FIRE RESISTANCE OF CONCRETE FILLED TUBULAR COLUMNS

2011 ◽  
Vol 76 (664) ◽  
pp. 1171-1180 ◽  
Author(s):  
Shigemi KIKUTA ◽  
Hiroyuki SUZUKI
Keyword(s):  
Fire Resistance ◽  
Tubular Columns

Experimental study on the fire resistance of GFRPpultruded tubular columns

2015 ◽  
Vol 69 ◽  
pp. 201-211 ◽  
Author(s):  
T. Morgado ◽  
J.R. Correia ◽  
A. Moreira ◽  
F.A. Branco ◽  
C. Tiago
Keyword(s):  
Experimental Study ◽  
Fire Resistance ◽  
Tubular Columns
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