Fire performance of modular wall panels: Numerical analysis

Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 1048-1067 ◽  
Author(s):  
Dilini Perera ◽  
K. Poologanathan ◽  
P. Gatheeshgar ◽  
I.R. Upasiri ◽  
P. Sherlock ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Fire Performance ◽  
Wall Panels

Evaluation of fire performance of lightweight concrete wall panels using finite element analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Irindu Upasiri ◽  
Chaminda Konthesingha ◽  
Anura Nanayakkara ◽  
Keerthan Poologanathan ◽  
Brabha Nagaratnam ◽  
...  
Keyword(s):  
Finite Element ◽  
Lightweight Concrete ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Fire Performance ◽  
Concrete Wall ◽  
Aggregate Concrete ◽  
Content Type ◽  
Wall Panels ◽  
Foamed Concrete

Purpose In this study, the insulation fire ratings of lightweight foamed concrete, autoclaved aerated concrete and lightweight aggregate concrete were investigated using finite element modelling. Design/methodology/approach Lightweight aggregate concrete containing various aggregate types, i.e. expanded slag, pumice, expanded clay and expanded shale were studied under standard fire and hydro–carbon fire situations using validated finite element models. Results were used to derive empirical equations for determining the insulation fire ratings of lightweight concrete wall panels. Findings It was observed that autoclaved aerated concrete and foamed lightweight concrete have better insulation fire ratings compared with lightweight aggregate concrete. Depending on the insulation fire rating requirement of 15%–30% of material saving could be achieved when lightweight aggregate concrete wall panels are replaced with the autoclaved aerated or foamed concrete wall panels. Lightweight aggregate concrete fire performance depends on the type of lightweight aggregate. Lightweight concrete with pumice aggregate showed better fire performance among the normal lightweight aggregate concretes. Material saving of 9%–14% could be obtained when pumice aggregate is used as the lightweight aggregate material. Hydrocarbon fire has shown aggressive effect during the first two hours of fire exposure; hence, wall panels with lesser thickness were adversely affected. Originality/value Finding of this study could be used to determine the optimum lightweight concrete wall type and the optimum thickness requirement of the wall panels for a required application.

Numerical Analysis of Fire Performance of a Spacial Pre-Stressed Steel Structure in Fire

2013 ◽  
Vol 790 ◽  
pp. 189-192
Author(s):  
Tian Hong Wang ◽  
Jin Can Xu ◽  
Hai Lun Tong ◽  
Xin Tang Wang
Keyword(s):  
Thermal Expansion ◽  
Numerical Analysis ◽  
Numerical Model ◽  
Stress Relaxation ◽  
Thermal Response ◽  
Structural Response ◽  
Steel Structure ◽  
Fire Performance ◽  
Maximum Value ◽  
In Fire

The numerical model of analysis of fire performance of a spatial pre-stressed steel structure with large span was established based on the software Marc. The thermal response and structural response of the pre-stressed steel structure was computed for some nodes of the structure in fire. The different fire scenes were considered for analysis of response temperature, displacements and stresses of the nodes of the pre-stressed steel structure.It is concluded that the temperature rise of the nodes of the structure is far behind that of air near the nodes, however they are quite close as the fire lasted for 3600s and almost the same after 7200s.The results show that the displacement of the node right above the inner cable is the maximum and the node above the outer cable has the smallest value of displacement and the maximum value is about two and half times as large as the minimum.The results show that the reason why the cables are out of work is that the equilibrium between the cables and the rods of the structure is lost, but not that the stress relaxation caused by thermal expansion make the cables out of work.

scholarly journals Fire performance of innovative 3D printed concrete composite wall panels – A Numerical Study

2021 ◽  
pp. e00586
Author(s):  
Thadshajini Suntharalingam ◽  
Perampalam Gatheeshgar ◽  
Irindu Upasiri ◽  
Keerthan Poologanathan ◽  
Brabha Nagaratnam ◽  
...  
Keyword(s):  
Numerical Study ◽  
Fire Performance ◽  
Wall Panels ◽  
3D Printed ◽  
Composite Wall

Novel conventional and modular LSF wall panels with improved fire performance

2021 ◽  
pp. 103612
Author(s):  
Dilini Perera ◽  
K. Poologanathan ◽  
M. Gillie ◽  
P. Gatheeshgar ◽  
P. Sherlock ◽  
...  
Keyword(s):  
Fire Performance ◽  
Wall Panels

Fire performance of reinforced concrete slabs: a numerical analysis

2021 ◽  
Author(s):  
Andreia Romero Fanton ◽  
Luiz Carlos de Almeida ◽  
Leandro Mouta Trautwein
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Finite Element Modelling ◽  
Concrete Slabs ◽  
Fire Performance ◽  
Membrane Action ◽  
Numerical Studies ◽  
Reinforced Concrete Slabs ◽  
Thermomechanical Behaviour ◽  
Load Carrying

<p>The emergence of tensile membrane action as a key load-carrying mechanism has increased experimental and numerical studies on the fire performance of concrete slabs since 2000, however, the different behaviour due to aggregate type is less studied in slabs numerical analysis. This paper presents a numerical analysis of the thermomechanical behaviour of reinforced concrete slabs exposed to fire, using Finite Element Modelling in ATENA and GiD. Results were validated against experimental data from the literature subjecting slabs to ISO834 and hydrocarbon time- temperature curves. 3 calibration steps were done to combine mechanical and thermal behaviours. A parametric analysis was carried out with calcareous and siliceous aggregates to provide information for safer slab design and consequent fewer accidents related to fire situation. The choice of aggregate type must always be considered in design.</p>

Thermal Performance of Load Bearing Cold-formed Steel Walls under Fire Conditions using Numerical Studies

2014 ◽  
Vol 5 (3) ◽  
pp. 261-290 ◽  
Author(s):  
Poologanathan Keerthan ◽  
Mahen Mahendran
Keyword(s):  
Finite Element ◽  
Thermal Behaviour ◽  
Finite Element Models ◽  
Fire Performance ◽  
Wall Panel ◽  
Load Bearing ◽  
Design Fire ◽  
Numerical Studies ◽  
Wall Panels ◽  
Fire Conditions

Cold-formed Light gauge Steel Frame (LSF) wall systems are increasingly used in low-rise and multi-storey buildings and hence their fire safety has become important in the design of buildings. A composite LSF wall panel system was developed recently, where a thin insulation was sandwiched between two plasterboards to improve the fire performance of LSF walls. Many experimental and numerical studies have been undertaken to investigate the fire performance of non-load bearing LSF wall under standard conditions. However, only limited research has been undertaken to investigate the fire performance of load bearing LSF walls under standard and realistic design fire conditions. Therefore in this research, finite element thermal models of both the conventional load bearing LSF wall panels with cavity insulation and the innovative LSF composite wall panel were developed to simulate their thermal behaviour under standard and realistic design fire conditions. Suitable thermal properties were proposed for plasterboards and insulations based on laboratory tests and available literature. The developed models were then validated by comparing their results with available fire test results of load bearing LSF wall. This paper presents the details of the developed finite element models of load bearing LSF wall panels and the thermal analysis results. It shows that finite element models can be used to simulate the thermal behaviour of load bearing LSF walls with varying configurations of insulations and plasterboards. Failure times of load bearing LSF walls were also predicted based on the results from finite element thermal analyses. Finite element analysis results show that the use of cavity insulation was detrimental to the fire rating of LSF walls while the use of external insulation offered superior thermal protection to them. Effects of realistic design fire conditions are also presented in this paper.

Shear bearing of cross-plate joints between diaphragm wall panels – II: numerical analysis and prediction formula

2016 ◽  
Vol 68 (20) ◽  
pp. 1025-1039 ◽  
Author(s):  
Jin-Jian Chen ◽  
Yong-Mao Hou ◽  
Jian-Hua Wang ◽  
Pizhong Qiao
Keyword(s):  
Numerical Analysis ◽  
Diaphragm Wall ◽  
Prediction Formula ◽  
Wall Panels
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