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The Seismic Behaviour of Composite Steel-Concrete Coupled Walls with Centred Openings
The structural system composed by composite steel-concrete shear walls (CSW) represents one of the recommended solutions for resisting structures placed in seismic areas. The system is able to provide high strength and limited displacements that successfully fulfil the requirements of earthquake resisting structures. The CSCSW are made of one reinforced concrete web panel which has embedded on the edges different types of steel profiles, with the purpose to improve the behaviour of the conventional reinforced concrete structural walls and to solve some technological issues on the boundary regions, such as reinforcement congestion. In practice, the CSCSW, either exterior or interior, need centred or staggered openings along the height of the structure, due to architectural or functional requirements. In the last decade the solution of solid composite walls without openings was investigated but there is a lack of information about the behaviour of such CSCSW with openings. This paper presents the experimental results on the behaviour of composite steel-concrete coupled shear walls with central openings. The specimens have partially embedded steel profiles on the edges and conventionally reinforced coupling-beams. The influence of different composite connections and the performance of the reinforced concrete with steel fibres in the overall seismic behaviour were studied. The failure modes, strength, stiffness and cracking analysis of the tested specimens are discussed herein. From the experimental tests, it was found that the ductility of the walls could significantly be improved if the traditionally reinforced concrete material is replaced by fibre reinforced concrete using hooked steel fibres.
The Seismic Behaviour of Composite Steel-Concrete Coupled Walls with Centred Openings
The structural system composed by composite steel-concrete shear walls (CSW) represents one of the recommended solutions for resisting structures placed in seismic areas. The system is able to provide high strength and limited displacements that successfully fulfil the requirements of earthquake resisting structures. The CSCSW are made of one reinforced concrete web panel which has embedded on the edges different types of steel profiles, with the purpose to improve the behaviour of the conventional reinforced concrete structural walls and to solve some technological issues on the boundary regions, such as reinforcement congestion. In practice, the CSCSW, either exterior or interior, need centred or staggered openings along the height of the structure, due to architectural or functional requirements. In the last decade the solution of solid composite walls without openings was investigated but there is a lack of information about the behaviour of such CSCSW with openings. This paper presents the experimental results on the behaviour of composite steel-concrete coupled shear walls with central openings. The specimens have partially embedded steel profiles on the edges and conventionally reinforced coupling-beams. The influence of different composite connections and the performance of the reinforced concrete with steel fibres in the overall seismic behaviour were studied. The failure modes, strength, stiffness and cracking analysis of the tested specimens are discussed herein. From the experimental tests, it was found that the ductility of the walls could significantly be improved if the traditionally reinforced concrete material is replaced by fibre reinforced concrete using hooked steel fibres.
The Seismic Behaviour of Composite Steel-Concrete Coupled Walls with Centred Openings
Lecture Notes in Civil Engineering
Mazzolani, Federico M. (editor) / Dubina, Dan (editor) / Stratan, Aurel (editor) / Todea, Viorel (author) / Dan, Daniel (author) / Stoian, Valeriu (author) / Floruț, Sorin-Codruț (author) / Popescu, Dan-Adrian (author)
International Conference on the Behaviour of Steel Structures in Seismic Areas ; 2022 ; Timisoara, Romania
2022-05-08
8 pages
Article/Chapter (Book)
Electronic Resource
English
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