International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
Analysis And Retrofitting of RCC Building in Seismic Zone III R.S. Chavan1, Mayur Sargar2, Abhishek Gorlewale3, Sakshi Shinde4, Vaishnavi Rachetti5, Sangram Lendave6 1Guide, Professor, Dept. of Civil Engineering, 2,3,4,5,6B-tech Student, Dept. of Civil Engineering,
VVP Institute of Engineering and Technology, Solapur, Maharashtra, India. (DBATU University, Lonere, Maharashtra)
Abstract: - Devastating earthquakes have historically occurred on the Indian subcontinent. The Indian plate is moving into Asia at a pace of about 47 mm/year, which is the main cause of the earthquakes' high frequency and intensity. Nearly 58% of the area in India is earthquake-prone, according to geographic statistics. During the course of their design life, structures must endure loads such as gravity, seismic activity, wind, and others. However, a lot of existing structures might deteriorate or require an upgrade for any of the reasons listed below: 1. A structure that is not code compliant 2. Later code and design practise updates 3. Subsequent seismic zone upgrades 4. Regression of age and fitness 5. Altering an existing structure 6. Modification of the building's use in accordance with the needs of the client, etc. The modelling and analysis of the RC frame buildings has been done by using structure analysis tool ETAB and results found is validated by performing linear static analysis, response spectrum analyses as per IS:1893 (part 1): 2002 After a comparison of the structures with and without bracing, it becomes clear that the structures with lateral force resisting systems are more suited and safe The primary goal of this project is to safeguard both new and old structures by creating an earthquake-resistant framework. Retrofitting is the process of upgrading that makes it possible for an older structure to withstand pressure in situations where Seismic Retrofitting is an upgrade to older structures that makes them more resistant to seismic activity. Key Words: - Response Spectrum Analysis (RSA), Lead Rubber Bearing, Indian Seismic Zone 3, ETABS, Retrofitting of Structures. 1. Introduction: - Many older structures that were built in conformity with earlier design norms and regulations are frequently found to be vulnerable to earthquake damage due to inadequate detailing, incorrect seismic loads, material deterioration with time, and other issues. Because new construction is expensive and older structures have historical value, building owners have opted to renovate them rather than build new ones. In response, governmental bodies passed legislation requiring seismic fortification. This means that methods to seismic building rehabilitation must take into account both an evaluation of the building's existing lateral-force-resisting characteristics and, if necessary, the installation of new parts. Zone III, a zone of moderate intensity Kerala, Goa, the Lakshadweep Islands, portions of Uttar Pradesh and Haryana, the remaining portions of Gujarat and Punjab, West Bengal, portions of western Rajasthan, Madhya Pradesh, the remaining portion of Bihar, portions of northern Jharkhand and Chhattisgarh, and portions of Maharashtra, Odisha, Andhra Pradesh, Telangana, Tamil Nadu, and Karnataka. (Refer figure A) The primary objective of earthquake resistant design is to prevent building collapse in order to lower the danger of human death or injury during earthquakes. Over the course of a structure's existence, there is incredibly little chance that a catastrophic earthquake will strike. Traditional structural designs prevent stresses and strains from getting close to the elastic limit for the vast majority of loads. However, in earthquake design, structures are permitted to stretch over their elastic limit in response to ground motion. If a structure had to endure such earthquakes elastically, a pricey lateral load resisting system would be necessary. The structure is anticipated to endure inelastic deformation during a major earthquake; thus, the building must rely on its ductility and capacity to release hysteric energy to prevent collapse.
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