International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 07 | July 2024
www.irjet.net
p-ISSN: 2395-0072
SEISMIC AND WIND-RESISTANCE SLAB: A TENSIONED APPROACH AND TRADITIONAL RCC. Mihir Dungria1, Kishan jayswal2, 1M.Tech Student, L.J. University, Ahmedabad
2Kishan Jayswal, Assistance Professor, Civil Engineering Department, L.J. University, Ahmedabad, India.
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Abstract – This research investigates the comparative
Seismic Waves: Body Waves: Travel through the Earth's interior. P-waves (primary waves) are compressional waves, and S-waves (secondary waves) are shear waves
performance of seismic and wind-resistant building slabs utilizing two distinct methodologies: a tensioned approach and traditional Reinforced Concrete (RCC) construction. The tensioned slabs employ specialized techniques to enhance structural integrity, while RCC adheres to conventional concrete practices. Through a comprehensive analysis of their behavior under seismic and high wind forces, this study aims to describe the efficiency, resilience, and suitability of each approach in mitigating the impact of these natural forces on structural stability. The findings offer insights crucial for optimizing construction practices for buildings against seismic and wind stresses.
Surface Waves: Travel along the Earth's surface and cause the most damage during an earthquake. Artificial causes: Reservoir-Induced Seismicity (RIS): Construction of large reservoirs, altering subsurface stress and causing earthquakes. Geothermal Energy and Oil Extraction: Fluid injection/extraction during geothermal, oil, or gas operations can induce seismic events by changing subsurface pressure. Waste Fluid Injection: Disposal of wastewater via deep well injection, altering subsurface conditions and potentially inducing earthquakes. Mining Activities: Large-scale mining operations, particularly those extracting minerals or hydrocarbons, can induce seismic events through material removal.
Key Words: P.T. slab, R.C.. slab , pushover analysis, Etabs.
1.INTRODUCTION Earthquakes and wind pose significant challenges to building structures, necessitating meticulous analysis and design considerations. In ETABS, seismic analysis involves assessing a structure's response to ground shaking using methods like Response Spectrum Analysis or Time History Analysis, adhering to relevant Indian Standards such as IS 1893. Wind effects, including lateral forces and vibrations, are evaluated using static or dynamic wind load analysis in accordance with IS 875 (Part 3). The integrated approach in ETABS allows engineers to comprehensively address the impacts of both earthquakes and wind on buildings, ensuring compliance with safety standards and optimal structural resilience. The structure analysis of the G+25 storey reinforced concrete building is done with the help of ETABS software.
1.2 Causes of wind There are two type of wind load 1. 2.
Static Wind Load: Represents the force exerted by wind on a structure without accounting for time-related variations. It is a constant load applied to the building. Dynamic Wind Load: Takes into account the timedependent fluctuations in wind speed and direction. Gusts and fluctuations play a crucial role in dynamic wind loading. 1.2.1 Factors Influencing Wind Loads:
Two types of causes are there for earthquake, 1) Natural causes 2) Artificial causes
1. 2. 3.
1.1 Natural causes Tectonic Plate Movements: The Earth's lithosphere is divided into several large and small pieces called tectonic plates. Earthquakes often occur at plate boundaries where these plates interact. Volcanic Activity: Earthquake can occur near volcanos due to the moment of magma and the release of pressure.
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Impact Factor value: 8.226
Static Wind Load Dynamic Wind Load
Wind Speed Building Height and Shape Terrain and Surroundings
Wind Speed: The velocity of the wind is a key factor. It is typically measured at different heights to account for variations with elevation.
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