EARTHQUAKE VULNERABILITY ASSESSMENT OF ROADS AT SYLHET CITY IN BANGLADESH

In geological point of view, part of Bangladesh, i.e. Sylhet is situated in high seismic zone. But still there is a lack of information on earthquake vulnerability assessment in a particular type of infrastructure like roads, bridges, water supply system etc. In this research work the probable damage scenario on road network has been carried out based on RADIUS and liquefaction method. 25.14km major roads of this city has been considered for vulnerability assessment where the major roads will experience different MMI intensity in case of recurrence of the Srimangal earthquake (M=7.6). According to RADIUS method 19.29% of total 25.14 km road will be damaged. A liquefaction map has been used to understand the relative potential damage of the roads as RADIUS method cannot identify the damage locations. This study will help to understand the actual earthquake damage scenario on the road network of Sylhet city and a possible improvement on earthquake management strategy for the above discussed road network can be considered by the respective authority.