International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
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REVIEW PAPER ON SEISMIC RESPONSE OF FLAT SLAB & CONVENTIONAL SLAB WITH DIFFERENT LATERAL LOAD RESISTING SYSTEMS Shehbaz Khan1, Dr.V.G. Sayagavi2, Prof. P.J. Salunke3 1Mtech
Student, Department of Civil Engineering, M.G.M College of Engineering, Kamothe, Navi-Mumbai. Principal & Professor, Department of Civil Engineering, M.G.M College of Engineering, Kamothe, NaviMumbai. 3Head of Department (HOD) & Professor, Department of Civil Engineering, M.G.M College of Engineering, Kamothe, Navi-Mumbai. ---------------------------------------------------------------------***--------------------------------------------------------------------2Vice
Abstract – Looking at the Modern trend of Construction,
warehouses, offices and public halls, slabs are directly supported by columns. This type of design & construction is aesthetically better. These slabs which don’t have beams & are directly supported by columns are called Flat slabs. To overcome the negative bending moments near the column of flat slab column capital and drop panels are used to support. This type of system has been adopted in many buildings which are constructed recently because of the advantage of reduced floor heights, cost effective and aesthetically better.
Flat slab are widely. Flat-slab is mostly used because it reduces the overall weight of building, increases the speed of construction & it is cost effective. Flat Slab system has many advantages over Conventional slab system, but when flat slab dealing with lateral load, it will be less potentially strong to resist lateral loads as compared to conventional slab. This Present study represent the literature review of different authors on effect of perimeter beam, shear wall & bracing system on flat slab structure under seismic loading. This paper provides study of various parameter such as lateral displacement, storey drift, Storey shear, time period & base shear. Key Words: Flat Slab System, Conventional Slab system, Shear wall, Bracing, Bracing, Lateral displacement, Storey Drift, Storey Shear, Time period.
1.2 Conventional Slab Floor slab supported on beams or walls are called as conventional slab. In this type, slab thickness is less for supporting this slab, depth of beam will be large & loads are transferred by the slab to beams then to columns or shear walls.
1.INTRODUCTION
A conventional slab is supported by beams on two parallel or opposite side & bending in the direction perpendicular to supports are called as one way slab. Slabs supported on four sides carrying loads and bending in two perpendicular directions such slabs are known as two-way slab.
Reinforced concrete (RC) flat slabs supported on columns offers several advantages for office, residential and industrial building construction, such as large open spaces and short construction times. Due to less lateral stiffness of the structure, vertical spines (shear wall and/or core walls), bracing etc different types of lateral load resisting system are added in Seismic prone areas to carry lateral or horizontal loads generated during earthquakes. Although the slab-column system is not part of the lateral force resisting system of the structure, each slab column connection seismically induced lateral displacement of the building while maintaining its capacity to transfer vertical loads from the slab to columns. Otherwise, brittle punching shear failure of the slab occurs and the deformation capacity of the connection determines the deformation capacity of the entire building.
1.3 Lateral load Resisting system (LLRS) The design of reinforced concrete (RC) multi-storeyed structure for seismic cases, determination of lateral load-resisting system is an important matter. The choosing of lateral load resisting system for special building is clearly a design decision of fundamental importance, yet there is no system that is best for all buildings. Some of the factors to be consider while selecting a seismic force resisting system include architectural, construction cost, performance, design budget & non-structural coordination. Configuration of the lateral load resisting system within the building should satisfy the following condition of good design, concerning such problems torsion, structural irregularities, redundancy & the combination of systems. The most regularly used structural system are as follows moment resisting frames, shear wall system, braced system, tube in tube systems with interior columns & bundled tubes.
1.1 Flat Slab In common practice of design and construction is the slabs supported by the beams and beams supported by the columns. This type of construction is called beam-slab construction in which due to the beam depth, the available net clear ceiling height reduces. Mostly beams are avoided in
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