Abstract
This paper presents the methodology related to Decision-Making of Reinforcement of Slopes Based on Cost-Benefit-Analysis. As for an example to show the applicability of the proposed method, the slopes closed to highway, which are located at four major cities in Japan, were focused on. In detail, by considering the locality of seismic activity and losses due to slope failure quantitatively, risk was evaluated. Furthermore, by regarding the amount of risk mitigation by means of the installation of ground anchor as the benefit, cost-benefit -analysis was carried out to obtain the optimum countermeasures. The results showed that the proposed method has great possibility to determine the reinforcement of slope rationally.
