Performance of different retrofitting techniques on existing RCC structures

Abstract

Most of earthquake in India shows that engineered as well as non-engineered structures are heavily doubted during moderate earthquake. India has a great population due to urbanization and that creates a challenge on structural designers to make use of acute space effectively. Constructing new structures is not always a choice especially in compact areas of city. Hence, utilizing reserved strength of existing structure will help to achieve economy as well as heritage. Most of the old structures need a retrofitting (up gradation of strength) due to many reasons like changing environmental condition, revision of codal provisions, revision of zones of India and improper supervision of structures. To depict the potential of retrofitting technique over existing structures, an attempt is made to upgrade the existing structure in the vicinity of Amravati region (M.S.). Existing structure was constructed with open ground storey without consideration of infill wall during analysis (Prior to this study). This paper presents consequences of providing open ground storey and remedial measures of retrofitting among different methods of retrofitting techniques.