Evaluation of the usefulness and limitations of risk assessment methods for road structure groups focused on road functions.

Abstract

 The ability of a road network to perform its expected function in the event of a disaster is important from the viewpoint of social consensus on the social impact of its dysfunction. Road structures, which are closely related to road functions, are designed to achieve performance that does not fall below the required level, reflecting the existence of many uncertainties. In addition, the performance of road structures deteriorates after they are put into service due to deterioration and damage. Therefore, it is difficult to accurately predict the damage caused by natural disasters to road structures. On the other hand, the applied standards and structural characteristics may affect the risk of damage and damage patterns of road structures.

 Therefore, in this study, a prototype method was developed to estimate the damage risk of bridges and earthwork structures based on their applied standards, structural features, and inspection results. We also discussed whether the proposed method is useful for risk assessment of roadway functions for infrastructure asset management.