International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 04 | Apr 2024
p-ISSN: 2395-0072
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DESIGN OF RCC STRUCTURE AGAINST PROGRESSIVE COLLAPSE Dr. RA.B. Depaa1*; K. Ganesh babu2; A. Selvakumar3; S. Sudhanraj4; P. Vinayagamani5; Dr. P. Gomathi nagajothi6; Department of Civil Engineering, Dr. M.G.R. Educational and Research Institute, Chennai - 600095, Tamil Nadu, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Structural engineers
potential targeted buildings. It is virtually impossible to predict what exact extreme load may be induced on a building, therefore when designing for structural integrity the most important consideration is progressive collapse. Progressive collapse results when a localized failure spreads to a larger portion of the structure.
are facing new challenges in designing safe structures due to the increase in terrorist actions carried out on landmark buildings which has the potential to cause great destruction, damage, and danger to people. As designers, Engineers are tasked with understanding all the possible loads that a building may encounter in its life and ensuring that the structural system will remain standing and ensure the safety of those inside. An abnormal loading in the past were never considered during design, but an alarming string of events, mostly terrorist, have awakened the need for special considerations for potential targeted buildings. It is virtually impossible to predict what exact extreme load may be induced on a building, therefore when designing for structural integrity the most important consideration is progressive collapse.
Several examples will be given of progressive collapses that occurred in structures due to abnormal loading. Such a failure is catastrophic as collapse occurs in an instance, not allowing time for inhabitants to escape. There are certain details regarding design and retrofit of structures to resist progressive collapse that should be followed, especially for materials such as concrete and steel. As a result of increasing catastrophic events in recent years, the prevention of progressive collapse is becoming a requirement in building design and analysis. Many approaches have been proposed to minimize the risk of progressive collapse in new and existing buildings. Among a number of building codes, standards, and design guidelines for progressive collapse, General Services Administration (GSA, 2003) and Department of Defense (DoD, 2005) address progressive collapse mitigation explicitly. They provide quantifiable and enforceable procedures to resist progressive collapse.
A building undergoes progressive collapse when a primary structural element fails, resulting in the failure of adjoining structural elements, which in turn causes further structural failure. Several examples will be given of progressive collapses that occurred in structures due to abnormal loading. Such a failure is catastrophic as collapse occurs in an instance, not allowing time for inhabitants to escape. There are certain details regarding design and retrofit of structures to resist progressive collapse that should be followed, especially for materials such as concrete and steel. In this thesis we have done structural modelling, analysis and design a structure against the progressive collapse.
2. Literature Review: Wood, C., Lodhi, M., and Sezen, H. - Their paper of this research is to better understand progressive collapse mechanisms of buildings, and to evaluate the current modelling and analysis techniques and design methodologies. Field experiments and numerical simulations were performed to investigate the progressive collapse potential of several reinforced concrete and steel frame buildings. Up to four first-story columns were physically removed from the buildings to understand the subsequent load redistribution within each building. Experimental data from the field tests were used to compare and verify the computational models and analysis results. Due to the scarcity of data from full-scale tests, the experimental data of this research is a valuable addition to the state of knowledge on progressive collapse of buildings. The design guidelines typically recommend simplified analysis procedures involving instantaneous removal of specified critical columns in a building. This research investigates the effectiveness of
Keywords: RCC, Progressive collapse, Modeling, Analysis, Design and STAAD Pro
1.INTRODUCTION Structural engineers are facing new challenges in designing safe structures due to the increase in terrorist actions carried out on landmark buildings which has the potential to cause great destruction, damage, and danger to people. As designers, Engineers are tasked with understanding all the possible loads that a building may encounter in its life and ensuring that the structural system will remain standing and ensure the safety of those inside. Abnormal loadings in the past were never considered during design, but an alarming string of events, mostly terrorist, have awakened the need for special considerations for
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