ACCESSIBILITY ANALYSIS BETWEEN PREFECTORAL OFFICE AND MUNICIPAL OFFICE WHILE CONSIDERING THE DISASTER RISK OF EMERGENCY TRANSPORTATION ROAD

Abstract

 It is designated as Emergency Transportation Road linking between disaster prevention bases in which to smooth Emergency Transportation. It is assumed that Emergency Transportation Road is damaged by disaster. However, little study has been done to research in such the consideration. In this study, it is analyzed the accessibility using Emergency Transportation Road between prefectural office and municipal office in consideration of flooding of roads by the river disaster, road blockage due to collapse of the roadside building by an earthquake and these complex cases. With the result that there are many flood risks that becomes unreachable until the municipal offices on Emergency Transportation Road, and it is high likely to become unreachable until the municipal office in areas where predicted high seismic intensity by road blockage due to collapse of the roadside building. In these impairments complexed case, it became clearly that possibility of unreachable until the municipal office is increase, if section of road blockage is overlap with non-flooded section.