International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 07 | July-2017
p-ISSN: 2395-0072
www.irjet.net
SEISMIC PERFORMANCE OF FLAT SLAB STRUCTURES UNDER STATIC AND DYNAMIC LOADS Bhojarajakumara M1, Dr. Shreepad Desai2 1P.G
2
Student, Department of Civil Engineering, Haveri, Karnataka, India Asst. Professor Department of Civil Engineering, Haveri, Karnataka, India
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract - Seismic analysis of structural systems has analysis of structure, considering the zones, soil condition been a necessary in the recent past. The structural systems and other data will available in IS 1893-2000 code book. that are adopted world over, beam less slab type of construction is popular and getting into the veins of the Flat slab can be defined as the slab is directly resting builders due to the cost effective construction with respect on supports without providing beams. In earlier way of to clearer distance, lesser utility usage and lesser height of construction slab-beam-column system is commonly used. the system for a given occupancy. However, the absence of Now a day for flat slab construction widely using for large the beams, in the system makes it vulnerable to lateral span, heavy loads, aesthetical appearance and economical forces; both wind and seismic, but seismic forces by variable purpose. Like commercial complex, big offices multilevel car nature increases the vulnerability of the system. parking and underground metro station. The economical purpose story height will reduced due to the absence of deep In the current study, models were prepared for G+5 beams. The absence of deep will save the concrete, utilities and G+10 with varying lateral stiffness; from flexible can be easily fixed into building. (columns) to stiffer (with shear walls). The lateral stiffness was provided in terms of columns only (flexible) and Flat slab structures having many of advantages over columns in combination with shear walls (stiffer). Shear earlier slab-beam-column structure like free design of space, walls and edge beams were provided at the periphery. The reduce construction time, architectural and economical effect of the providing panel drop and perimeter beam along consideration. This type of construction commonly adopted. with slab was also studied. The models were subjected to Flat slab is more flexible to resisting lateral loads over both seismic and dynamic loads. The structural responses traditional R.C frame system. like natural periods, base shear, displacement and inter storey drifts were also studied and located in seismic zone V 2. OBJECTIVES in accordance with IS 1893-2002. From the seismic performance results shows that flat slab structures The main objective of the work is strengthened by providing edge beams and shear walls. 1. To perform linear static and linear dynamic analysis Key Words: Flat slab, Flat plate, Shear wall, Edge beam. of flat plate and flat slab structures using Response Spectrum method. 1. INTRODUCTION 2. Response evaluation of 3D Systems with & without Edge Beams, with & without shear wall at periphery India has second highest population in the world, under dynamic loading. day by day availability of land will decreased because India 3. Seismic performance by studying Time Period, is developing country, for using of remaining land efficiently, Story displacement, Story drift and Base shear by so some companies constructing high rise buildings. Many of considering 5storey & 10story with zone V and soil countries for constructing buildings using steel structures type II. but in our country steel structures rarely using due to lack of knowledge and economical reason. So concrete is widely 3. METHOD OF ANALYSIS using in construction field. For this reason many of scientists doing research on the concrete. Behavior of concrete, 3.1 Equivalent lateral force method earthquake effect and design of earthquake resistance for different zones and different soil condition these are In this method, design of base shear can be computed parameter commonly consider for construction activity. along the height of building, simple formulas using to analyze base shear according to IS 1893(part-I); 2002. Earthquake is one of the natural phenomena it may i. Design of lateral force or design of base shear can happen due to naturally or human activity, what it may be it be determined by required safety of buildings to resist seismic loads. For (Clause 7.5, IS 1893(Part-I):2002) Š 2017, IRJET
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