The Rakanji stone arch bridge has three spans of approximately 26 m, and the total length of the bridge is approximately 89.3 m. The rise:span ratio is approximately 0.19; hence, the arches are very shallow. To clarify the structural characterization of the Rakanji stone arch bridge, a series of dynamic, non-destructive and destructive tests are conducted. From material tests, the Young's modulus and compressive strength of the stone are estimated to be 17.2 kN/mm 2 and 28.5 N/mm 2 , respectively, whereas those of the mortar are estimated as 5.5-7.8 kN/mm 2 and 3.9-9.1 N/mm 2 , respectively. From the results of dynamic tests, the fundamental frequencies, modes, and damping factors of the Rakanji stone arch bridge are identified by eigensystem realization algorithm (ERA) model. From the results of numerical model updating based on inverse eigensensitivity method (IEM), the damaged areas including the effect of boundary condition and bridge-soil interaction are identified and these areas correspond well to those through the in situ tests and visual inspection.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.