Seismic Retrofitting of Structures by Steel Bracings

摘要

Seismic retrofitting is the modification of existing structures so as to improve the system behaviour or its components repair/strengthening up to the performance it is expected. Detailed seismic evaluation and assessing the vulnerability of the structure are the key ingredients in order to arrive at an appropriate retrofitting scheme. This study proclaims a complete process of retrofitting on a building designed with two different philosophies i.e., as per IS 456: 2000 and IS 1893 (Part 1): 2002 and retrofitted with steel bracing. The fragility analysis was also carried out to indicate the probability of damage under different states which reduces considerably after retrofitting of building.