A Suggestion of Health Monitoring for Road Bridge Shoes

In recent years, the number of old bridges has remarkably increased in Japan. A periodic monitoring of them is necessary in order to confirm their security. This monitoring can lead to early warnings and prediction of potential problems and help in the planning of the necessary maintenance interventions and enables the damage assessment after earthquakes. Deterioration of shoes of bridges becomes remarkable recently. The shoes are a part absorbing the expansion and contraction of the bridges by the temperature change. When the shoes do not function, various problems appear on supporting beams and floor. In this paper, we describe about the shoe measurement results at the actual field.