Open AccessSeismic vulnerability assessment of three spans girder bridge in Kuranji - Padang by developing fragility curve
Author(s) -
Masrilayanti,
Rahmadona,
Ruddy Kurniawan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/708/1/012006
Subject(s) - fragility , bridge (graph theory) , structural engineering , response spectrum , vulnerability (computing) , girder , engineering , forensic engineering , computer science , medicine , chemistry , computer security
Bridges play an essential role as a connecting road network for emergency response activities and evacuation routes at the moment after earthquakes. The bridge also performs as the main route for transporting commodity goods. In this study, a prestress concrete I girder (PCI) multi-span bridge is located at high risk of earthquake, Bypass Road, Kuranji Village, West Sumatra Province-Indonesia, is analyzed to obtain its performance under earthquake. The bridge is located on the main route from Teluk Bayur Port to Minangkabau International Airport. Besides, this bridge has been planned before 2016, where the earthquake load regulation was smaller than the earthquake required by the latest one. Therefore, to find out the level of damage stage that might occur due to an earthquake on the bridge, it is necessary to have a tool, namely the fragility curve developed by using lognormal distribution function based on the structural response from pushover analysis and non-linear time history analysis. The study results showed that when the response spectrum target occurred, the bridge damage category based on HAZUS grouping was a Moderate category. Then, from the fragility curve developed, the probability of exceeded damage level for the HAZUS category of Slight, Extensive and Complete damage can also be known.