International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 06 | Jun 2024
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p-ISSN: 2395-0072
“SEISMIC RETROFITTING OF HIGH-RISE BUILDING” Prof. Jawalkar G.C., Yogesh Sanjay Pawar, Prof. Badeghar R.R. Department of civil Engineering, N.B. Navale sinhgad College of Engineering, Solapur, India. -----------------------------------------------------------------***---------------------------------------------------------------- Comparison of results for various methods of ABSTRACT: Nowadays The repair of a structure or its Retrofitting.
element has always been very difficult, and adequate solutions have often entailed extensive works. Specialized techniques of strengthening, stiffing and repair are needed to deal with damaged structural elements due to fire, earthquake, foundation movement, impact and overload. Many existing bridges, industrial structures, urban transport structures, marine structures and earth retaining structures are in need of repair or upgrade. During the service life due to many reasons the reinforced concrete structures have to face some modifications and improvements. In such case there are two possible solutions: replacing or retrofitting. Replacing of whole structures causes disadvantages like high costs for labor and material. So, without replacing the complete structure, if is desirable to repair it or upgrade it by using retrofitting techniques if possible and feasible.
1. INTRODUCTION: Deterioration of concrete structure is a worldwide problem. The reasons behind this are many, like occurrence of natural hazards like earthquakes, lack of awareness of several important codal provisions in construction, poor quality of supervision etc... These factors lead to strength deficient structures. Sometimes, overloading of structures leads to excessive deformations and corrosion which need considerable attention today. To overcome all these effects on reinforced concrete structures: repair, retrofitting or strengthening are regularly required activities in construction field today. The damages caused by all of these possible ways will require variety of possible repair techniques, from which most effective one will be chosen in each particular case. In some cases, even newly built structures require, repair and strengthening so as to eliminate defects due to mistakes in design or construction.
In this study a G+20 storey building model of Existing building structure without retrofitting, Deteriorated building structure and Retrofitted building structure by considering percentage variation in deterioration and retrofication of overall building structure is taken into account and the analysis is carried out by using response spectrum analysis.
The repair of concrete structure or its element has always been very difficult, and adequate solutions have often entailed extensive works. Specialized techniques of strengthening, stiffing and repair are needed to deal with damaged structural elements due to unusual event such as fire, earthquake, foundation movement, impact and overload. Many existing bridges, industrial structures, urban transport structures, marine structures and earth retaining structures are in need of repair or upgrade. During the service life due to many reasons the reinforced concrete structures have to face some modifications and improvements. In such case there are two possible solutions: replacing or retrofitting. Replacing of whole structures causes disadvantages like high costs for labor and material. So, without replacing the whole structure, if is desirable to repair it or upgrade it by retrofitting if possible and feasible.
The analysis and comparison of Existing building without retrofitting with Deteriorated building structure and Retrofitted building structure by considering percentage variation in deterioration and retrofication at different locations of overall building structure by applying various methods of retrofitting are studied to investigate the seismic behavior of high-rise building. Codes referred: IS 456:2000, IS 1893:2016 Keywords: Retrofitting, Displacement, Spectrum Analysis, Shear Wall, Jacketing,
Response
OBJECTIVES
This proposed work is focused on: Study of Retrofitting of Building. Analysis of multistoried building without Retrofitting. Analysis of multistoried building with various methods of Retrofitting. Study of structural behavior of building by applying various methods of Retrofitting at different location of building.
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2. RETROFITTING: “Retrofit” means the use of new innovations to a more seasoned system. Retrofitting is the process of adding some new elements to a structure that were not there previously. It is the method of changing or repairing something after it has been made. There are different retrofitting techniques for RCC buildings. The
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