SEISMIC VULNERABILITY ASSESSMENT AND REHABILITATION DESIGN OF THENAGHAREH-KHANEH EDIFICE

The purpose of this study is to assess the vulnerability of an old edifice in the Imam Reza (PBUH) Holy Shrine Complex and that a decision to be made about the rehabilitation Method. This complex is.. not only considered as the most important religious-cultural site and an important historical heritage in Iran, but since it is also utilized 24 hours a day, so all of its buildings must be rehabilitated to meet the high performance level. The first step for evaluating the edifice consisted of site surveying, performing ambient vibration teat, shove tests, single and double flat jack tests, georadar scanning and taking thermo graphical pictures which prepared sufficient information to develop analytical models. As the second step of the study, FE models were developed and analyzed. The analyses revealed a poor performance of the entire structure and insufficient strength of the edifice. Then some rehabilitation techniques such as reducing the mass, base isolating, post tensioning the walls by cables and etc., which were acceptable for their. limited interventions were studied by computer simulation and FE models, but none of them met the desired performance in the selected hazard level. So it has shown that great interventions would be needed to upgrade the level of structural performance, for instance, embedding a mega-frame inside the historical building so as to meet the life safety performance level.