scholarly journals Stability of Stainless Steel I-Section Beam-Columns at Elevated Temperatures

2020 ◽  
pp. 2150037
Author(s):  
Merih Kucukler ◽  
Zhe Xing ◽  
Leroy Gardner
Keyword(s):  
Stainless Steel ◽  
Elevated Temperatures ◽  
Steel Beam ◽  
Design Rules ◽  
Beam Columns ◽  
Parametric Studies ◽  
In Fire ◽  
Improved Accuracy ◽  
Rules Set ◽  
Fire Design

With the growing use of stainless steel in the construction and offshore industries, there is an increasing interest and need to study the performance of stainless structures at elevated temperatures. The behavior and design of stainless steel I-section beam-columns in fire is investigated in this paper, addressing a scarcity of previous research on this topic. Finite element (FE) models of stainless steel beam-columns, able to replicate their response at elevated temperatures, are created and validated; the validated models are then used to perform parametric studies to generate extensive benchmark structural performance data. The design rules set out in the European structural steel fire design standard EN 1993-1-2 are assessed and shown to provide rather inaccurate and often unsafe ultimate strength predictions for stainless steel I-section beam-columns in fire. New fire design rules for stainless steel beam-columns are put forward. It is shown that the new proposals are able to offer improved accuracy and design efficiency relative to the EN 1993-1-2 beam-column design rules. The reliability of the proposed design rules is also verified on the basis of the fire design reliability criteria set out by Kruppa [Eurocodes–Fire parts: Proposal for a methodology to check the accuracy of assessment methods, CEN TC 250, Horizontal Group Fire, Document no: 99/130 (1999)], thereby demonstrating the suitability of the proposed design rules for inclusion in the upcoming revised version of EN 1993-1-2.

The use of a bree simulation to investigate strain accumulation in 316 stainless steel at temperatures between room temperature and 500°c

1989 ◽  
Vol 24 (2) ◽  
pp. 95-102 ◽  
Author(s):  
D J Brookfield ◽  
D N Moreton
Keyword(s):  
Stainless Steel ◽  
Transition Temperature ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Cyclic Change ◽  
Strain Accumulation ◽  
Temperature Behaviour ◽  
Design Rules ◽  
Axial Tension ◽  
Applied Stresses

This paper details tests undertaken to determine the 1 per cent strain accumulation boundary in stainless steel type 316 strip subjected to constant axial tension and a cyclic change of curvature. Boundaries are obtained for temperatures between 300 and 500°C. These are compared with two design rules, both of which are shown to be conservative. Additionally, the temperature at which the transition from the characteristic room temperature behaviour of continued ratchetting to the ‘shakedown’ observed at elevated temperatures is investigated. Results obtained indicate that this transition temperature is influenced by the magnitude of the applied stresses.

Tests of cold-formed and welded stainless steel beam-columns

2015 ◽  
Vol 111 ◽  
pp. 1-10 ◽  
Author(s):  
Baofeng Zheng ◽  
Xia Hua ◽  
Ganping Shu
Keyword(s):  
Stainless Steel ◽  
Steel Beam ◽  
Beam Columns

Parametric study on austenitic stainless steel beam-columns with hollow sections under fire

2019 ◽  
Vol 152 ◽  
pp. 274-283 ◽  
Author(s):  
Nuno Lopes ◽  
Mónica Manuel ◽  
Ana Regina Sousa ◽  
Paulo Vila Real
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Parametric Study ◽  
Steel Beam ◽  
Beam Columns

The Influence of Spalling on the Fire Resistance of RC Structures

2011 ◽  
Vol 255-260 ◽  
pp. 519-523 ◽  
Author(s):  
Xin Meng Yu ◽  
Xiao Xiong Zha ◽  
Zhao Hui Huang
Keyword(s):  
Fire Resistance ◽  
Elevated Temperatures ◽  
Analysis Procedure ◽  
Structural Members ◽  
Thermal And Mechanical Properties ◽  
Structural Behaviour ◽  
Rc Structures ◽  
Parametric Studies ◽  
Rc Slabs ◽  
In Fire

A great many of experiments has shown that reinforced concrete (RC) structures suffered from spalling in fire. However, at present there are still no convincing spalling predicting models available due to the inhomogeneous nature and complicated thermo-hydro-mechanical interactions in concrete at elevated temperatures. In order to evaluate the fire resistance of RC structures which are subjected to concrete spalling, a thermal analysis procedure is developed which considers the effects of spalling on the growth of temperature in RC members. The predicted temperatures are then used to model the structural behaviour. The spalled portion of concrete is modelled as "void", which has no thermal and mechanical properties. A series of parametric studies carried out on RC structural members with different boundary conditions shows that the influence of spalling on fire resistance is very significant apart from the RC slabs subject to higher laterally restraint.

Design of cold-formed stainless steel RHS and SHS beam–columns at elevated temperatures

2021 ◽  
Vol 165 ◽  
pp. 107960
Author(s):  
Yuner Huang ◽  
Ju Chen ◽  
Yan He ◽  
Ben Young
Keyword(s):  
Stainless Steel ◽  
Elevated Temperatures ◽  
Beam Columns

scholarly journals Analytical predictions of moment curvature relationship of steel beam columns under fire attack

2018 ◽  
Vol 162 ◽  
pp. 04006
Author(s):  
Haitham Al-Thairy
Keyword(s):  
Elevated Temperature ◽  
Elevated Temperatures ◽  
Compressive Force ◽  
Suggested Method ◽  
Steel Beam ◽  
Steel Buildings ◽  
Axial Compressive Force ◽  
Beam Columns ◽  
Resistance Moment ◽  
Relationship Of

Fire attack is one of the worst scenarios that may cause catastrophic consequences of steel buildings such as progressive collapse and failure. Current design codes and standards have addressed fire as one of the extreme loading conditions to be accounted for in the design of buildings. However, most of the approaches and procedures suggested by these codes and standards still lack accuracy and rationality. The purpose of this paper is to develop an analytical approach to predict the elastic-plastic moment-curvature relationship of steel beam - columns section under elevated temperature. The analytical method was derived based on dividing the steel section to layers and integrating the resistance moment equation of each layer in terms of the section curvature taking into account the effect of elevated temperature on the material properties of the steel by using EC3 reduction factors of the yield stress and modulus of elasticity. The suggested method has been validated against numerical simulation results. Validation results have shown the reliability of the suggested method to predict the resistance moment - curvature relationship of steel beam-column members at different elevated temperatures and under different values of the axial compressive force. The suggested methods may be used to develop more accurate design approaches for steel beam columns under fire condition.

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