Seismic Evaluated and Retrofit of Existing Buildings

Abstract

Most structures in Iraq were designed only for gravity loads, these make buildings present a major quandary for the person or agency concerned with reducing earthquake hazards. Objectives of this research are to develop a computer program for the evaluation existing gravity loads buildings to identify any weak columns in the structure that should need retrofit according to value of damage index . Seismic retrofit techniques are previewed and discussed in this research . The results identify the location and severity of the damage member, indicate that the sever damage maybe concentrated in the upper stories and can possibly lead to further collapse. According to these results, a minimum retrofit should be considered to reduce the risk of structural collapse.