The ground deformation of the Luk Barat Bridge after Lombok earthquakes 2018

Abstract

The Luk Barat Bridge has an important role in transportation infrastructures in the North Lombok District, connecting cities in Lombok Island. Unfortunately, the bridge is located where the most vulnerable area in Lombok Island, as earthquakes occurred in 2018 have ruined almost one third of the island and destroyed thousands of buildings. The bridge has been deformed after the earthquakes. Geodetic measurement showed that the bridge has displaced in total of 0.36 m measured from the datum point of BM2 near located closed to the bridge area. Numerical modeling also indicated a similar value of displacements.