scholarly journals Finite Element Modelling of the Fire Resistance of Double Skin Composite Walls Subjected to Monotonic Compressive Loading

2021 ◽  
Author(s):  
Mohamed Yanis Bournas

The fire resistance of double skin composite wall (DSCW) system composed of two profiled steel sheets and concrete infill is investigated through use of finite element (FE) methods. The fire resistance of DSCW when exposed to elevated temperature and a constant axial compressive load with different infill materials such as self-consolidating concrete (SCC), engineered cementitious concrete (ECC) and ultra-high performance concrete (UHPC) is investigated. The influence of parameters such as load level, thickness of steel sheets, depth of concrete core and fastener arrangement on the fire resistance of the DSCW are established. The performance of SCC-based DSCW has the best fire resistance followed by ECC and UHPC-based composite walls. The increase in load level decreases the fire resistance while the increase in depth of concrete infill increases the fire resistance of the composite wall. The fastener arrangement and steel thickness have no significant influence on the resulting fire resistance.

2021 ◽  
Author(s):  
Mohamed Yanis Bournas

The fire resistance of double skin composite wall (DSCW) system composed of two profiled steel sheets and concrete infill is investigated through use of finite element (FE) methods. The fire resistance of DSCW when exposed to elevated temperature and a constant axial compressive load with different infill materials such as self-consolidating concrete (SCC), engineered cementitious concrete (ECC) and ultra-high performance concrete (UHPC) is investigated. The influence of parameters such as load level, thickness of steel sheets, depth of concrete core and fastener arrangement on the fire resistance of the DSCW are established. The performance of SCC-based DSCW has the best fire resistance followed by ECC and UHPC-based composite walls. The increase in load level decreases the fire resistance while the increase in depth of concrete infill increases the fire resistance of the composite wall. The fastener arrangement and steel thickness have no significant influence on the resulting fire resistance.


2015 ◽  
Vol 815 ◽  
pp. 49-53
Author(s):  
Nur Fitriah Isa ◽  
Mohd Zulham Affandi Mohd Zahid ◽  
Liyana Ahmad Sofri ◽  
Norrazman Zaiha Zainol ◽  
Muhammad Azizi Azizan ◽  
...  

In order to promote the efficient use of composite materials in civil engineering infrastructure, effort is being directed at the development of design criteria for composite structures. Insofar as design with regard to behavior is concerned, it is well known that a key step is to investigate the influence of geometric differences on the non-linear behavior of the panels. One possible approach is to use the validated numerical model based on the non-linear finite element analysis (FEA). The validation of the composite panel’s element using Trim-deck and Span-deck steel sheets under axial load shows that the present results have very good agreement with experimental references. The developed finite element (FE) models are found to reasonably simulate load-displacement response, stress condition, giving percentage of differences below than 15% compared to the experimental values. Trim-deck design provides better axial resistance than Span-deck. More concrete in between due to larger area of contact is the factor that contributes to its resistance.


2012 ◽  
Vol 170-173 ◽  
pp. 434-438 ◽  
Author(s):  
Yin Zhang ◽  
Cai Yang Zhang ◽  
Qi Zhang ◽  
Deng Fei Zhang

Composite structure of mufti-ribbed composite walls-shear walls is composed of Multi-ribbed composite walls and shear walls which form a new kind of resisted load structure together. The paper analyzes the interaction of composite structure of mufti-ribbed composite walls-shear walls and pile-raft foundation with elastic-plastic mode of D-P. The load of superstructure is combined in the raft by substructure method, Finally,the paper obtain the distributed regularity of pile-raft foundation stress, strain by analyzing the influence of force performance which got by the large finite element software ANSYS analyzing interaction of superstructure and the pile-raft foundation-groundwork.


2018 ◽  
Vol 24 (3) ◽  
pp. 135
Author(s):  
Husain M. Husain ◽  
Mohannad H. Al-Sherrawi ◽  
Asmaa Taha Ibrahim

This paper deals with finite element modeling of the ultimate load behavior of double skin composite (DSC) slabs. In a DSC slab, shear connectors in the form of nut bolt technique studs are used to transfer shear between the outer skin made of steel plates and the concrete core. The current study is based on finite element analysis using ANSYS Version 11 APDL release computer program. Experimental programmes were carried out by the others, two simply supported DSC beams were tested until failure under a concentrated load applied at the center. These test specimens were analyzed by the finite element method and the analyses have shown that these slabs displayed a high degree of flexural characteristics, ultimate strength, and ductility. The close agreement has been observed between the finite element and experimental results for ultimate loads and load–deflection responses. The finite element model was thus found to be capable of predicting the behavior of DSC slabs accurately.  


2019 ◽  
Vol 9 (21) ◽  
pp. 4679 ◽  
Author(s):  
Chunwei Zhang ◽  
Dong An ◽  
Limeng Zhu

This paper presents a novel steel-damping-concrete (SDC) composite wall as a vertical element for high-rise buildings and nuclear power plants etc. In an SDC composite wall, a damping layer is sandwiched between the concrete core and steel plates to reduce structural response based on its damping characteristics under axial and seismic loads. To ensure that an SDC composite wall exhibits a comparable compressive resistance as a steel-concrete-steel (SCS) composite wall, two types of reinforcing approaches including steel sheets and sleeves are utilized to enhance the weakness of the damping layer on the concrete core. The compressive performance of the reinforced SDC composite wall is numerically and analytically investigated using finite element (FE) simulations by ABAQUS. The influences of several key parameters including the type of reinforcement, the thickness of the damping layer, steel plates, and concrete core, the binding bar spacing as well as the diameter of steel sheets on the compressive performance of the composite walls are investigated through numerical analyses. The results show that while only embedding the rubber interlayer in the composite wall leads to the decrease of compressive resistance of the composite wall, the steel sheets and sleeves can provide the confinement effect on concrete core efficiently and improve the compressive resistance and ductility of walls. Based on the available methods in the current design codes such as Eurocode 4, AISC-360, a theoretical model is developed to predict the ultimate compressive resistance of SDC walls. The predictions show a reasonable correlation when compared with the numerical results.


2012 ◽  
Vol 531 ◽  
pp. 539-542
Author(s):  
Xiu Ling Cao ◽  
Hui Ge Wu ◽  
Xi Zhen Wang ◽  
Yan Zhao

Finite element analysis has been performed with software ABAQUS in order to study the effect of door opening’s size and position on seismic performance of autoclaved aerated concrete block composite walls. On the basis of good agreement between finite element results and experimental results, the effect of door opening’s size and position on seismic performance of autoclaved aerated concrete block composite walls has been studied using finite element analysis. This study indicates that with the increase in the door width, the decrease in the wall’s bearing capacity is proportional to the decrease in the wall’s net area; and the change of door’s position has less effect on seismic performance of the composite wall.


2011 ◽  
Vol 295-297 ◽  
pp. 415-418
Author(s):  
Chao Xu ◽  
Yu Hua An ◽  
Ai Hua Bai

This paper adopts the finite element method to study the shear resistance of the first floor cold-formed steel composite walls in six stories residential structures, plastic shell element is used, materials nonlinearity and geometric large deformation are considered. The screws connecting sheathing and frame are modeled through coupling methods. Analyzing the influence of factors such as stud spacing,Brace and rigid bracing's establishment,component wall thickness to the shear behavior of cold-formed steel composite wall, these dates can provide certain theory for the actual project.


2016 ◽  
Vol 107 ◽  
pp. 101-118 ◽  
Author(s):  
Khandaker M.A. Hossain ◽  
Shahryar Rafiei ◽  
Mohamed Lachemi ◽  
Kamran Behdinan ◽  
Muhammed S. Anwar

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