Abstract
Indonesia is known as an earthquake-prone region, lies in the ring of fire zone. This potential hazard can impact several infrastructures, including bridges. Seismic bridge damages could possibly disrupt traffic flow furthermore cut off the regional connectivity. In this study, risk analysis is carried out on several bridges after Lombok and Palu earthquake. Visual inspection has been undertaken on 38 bridges on-site, and several damages identification are reported. Risk analysis was then carried out according to the severity of element damages and the frequency of occurrence. From the analysis, it is concluded that embankment settlement in the approach road is found to be the most potential element with the highest risk of damage due to earthquakes. Besides, the superstructure displacement and crack in the wing wall are at moderate risk. This finding makes the substructure become the most vulnerable element which needs more attention. Therefore, it is recommended to specify a higher design specification for substructure to mitigate seismic bridge damages, especially for bridges located in the high seismic zone area.
Highlights
Indonesia is considered as the biggest archipelago, which has a risk of natural disasters
Indonesia has established some codes, standards, guidelines, and manuals for bridge design, inspection, and maintenance, which are already included in the Bridge Management System 1992 [1]
Based on the results of the risk analysis, the type of damage of bridge element with the highest risk to earthquake events is the settlement of embankment
Summary
Indonesia is considered as the biggest archipelago, which has a risk of natural disasters (i.e., earthquake). This fact makes bridges have an important key at road network infrastructures. If the earthquake and landslide are tended to occur frequently, more bridges will be further at risk of damage and disrupt the importance of road connectivity. Those criteria are useful for the description of the severity of the earthquake. Risk analysis is carried out based on the field inspection data on several bridges after Lombok and Palu earthquake, which occurred in 2018.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
