International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 06 | Jun 2022
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e-ISSN: 2395-0056 p-ISSN: 2395-0072
Structural Performance of Equally and Unequally of Stone Prism Encased Composite Column Shine Elsa Mathew1, Midhila V.S2 1Shine
Elsa Mathew, M.Tech Student, Dept. of Civil Engineering, Sree Buddha College of Engineering, Kerala, India V.S, Assistant Professor, Dept. of Civil Engineering Sree Buddha College of Engineering, Kerala, India ---------------------------------------------------------------------***--------------------------------------------------------------------2Midhila
Abstract - The centre piece of the infilled concrete is
column system has various benefits. The system performs exceptionally well structurally thanks to the distribution of materials in the cross-section. The steel is located at the outside edge, where it excels in tension and bending. Due to the material's distance from the centroid, it also provides the highest stiffness. The greatest contribution to the moment of inertia is made by this along with the steel's enormous modulus of elasticity. The fundamental disadvantage of CFST is that the steel tube dilates more from its real position than does the concrete when the column is subjected to maximum loading. As a result, the column loses strength and stiffness due to a lack of confining pressure [1]. Different types of CFST members have acquired favourable mechanical behaviour as a result of the composite activities between the various components. This is because the outside steel tube provides confinement and increases the strength and deformation capacity of the infilled concrete, while the infilled concrete suspends local buckling of the outer steel tube.
planned to be replaced with a stone prism, creating a new form of concrete-filled steel tube (CFST) structural element. This stone prism can either be newly mined and made, or it can be recycled from old stone buildings. The stone prism enclosed composite column should have a higher loadcarrying capacity than traditional CFST columns because of the high compressive strength of stone blocks and the efficient confinement provided by the steel tube. Furthermore, because the high-strength stone offers additional confinement from the inside of the concrete, the infilled stone prism is anticipated to improve the local bearing behaviour of CFST. Using ANSYS software, the structural performance of the composite columns encased in stone prisms under axial compression was investigated. Key Words: Axial Compression, CFST, Composite, Confinement, Infilled, Stone prism, Ansys
1. INTRODUCTION A vertical structural component intended to convey a compressive load is known as a column. The foundation receives the load from the beam and slab supporting the ceiling or roof, including its weight, through a column. Therefore, it should be clear that the collapse of the entire structure is caused by the failure of a column. A stub column is a sort of column that is built above a beam or slab to shift load off the main beam but is not directly attached to the footing. Stub columns have a relatively small height. Figure 1 displays a stub column. When there are extra rooms, a stub column is offered. To make buildings more rigid, stub columns are occasionally added. The load is moved from one beam to another beam using a stub column. Stub columns are utilised in this project. In order to make use of each material's advantageous qualities, composite columns are built employing a variety of structural steel and concrete mixtures. The composite column is an extremely rigid, economical, and hence structurally effective member in building and bridge structures due to the interaction of concrete and structural steel elements. One kind of popular composite column is the CFST column. Concrete-Filled Double Skin Tubes (CFDST), Reinforced Concrete Filled Double Skin Tubes, Concrete-Encased CFST column, and Stiffened CFST column are some of the different varieties of CFST columns. Compared to regular steel or reinforced concrete structures, a concrete-filled steel tube (CFST)
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Fig.1 Stub Column It was proposed that confining stone inside steel tubes would increase its ductility. The core component of the infilled concrete is therefore replaced with a stone prism using the Stone Prism Encased Composite Columns, a novel type of CFST member that is proposed here. A composite column encased in stone is examined in this thesis. Also Stone Prism Encased Composite Column splitted with different length of stone is analyzed . ANSYS 21 is a finite element programme used for modelling and analysis.
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