A Study on Relief Supplies Delivery to Shelters Considering Road Block Factor in Case of Large Scale Earthquake

Abstract

Delivery vehicles of relief supplies mainly pass through emergency roads. Roadside buildings and bridges on the emergency roads are maintained for earthquake resistance to carry out emergency activities after large scale disaster. On the other hand, secondary roads of connected emergency roads and shelters are necessary to deliver relief supplies because all of shelters are not faced emergency roads. However, unlike emergency roads, there are no guidelines of earthquake resistance for secondary roads of connected emergency roads and shelters. Therefore, even in the past large scale disaster disruptions, secondary roads affected accessibility to deliver relief supplies. In this study, secondary roads between emergency roads and shelters were analyzed considering road block factors under the prerequisite of delivery of relief supplies by vehicle. In addition, it is considered the concept of road improvement to ensure the accessibility to the shelters before disaster happened. Furthermore, the usefulness of the concept was verified.