| Hokkaido is the northernmost island of Japan、 and with wintertime comes the potential for icy、 slippery roadways、 which result in negatively affecting vehicular traffic performance on roadways. This presents a significant potential determinant to traffic-congestion and accident. Road authorities attempt to provide as good winter roadway condition as possible through various snow and ice control activities to prevent snow or ice from bonding to road surface. In order to strategically provide those activities、 it is required implementing an effective winter maintenance decision support system. Especially、 bridges need more attention because those have a history of higher percentage of winter accidents than roadways、 with showing different pattern of pavement temperature between bridges and roadways. Therefore、 in order to enhance more effective winter maintenance with forecasting accurately bridge pavement conditions、 this study explores the modeling of bridge-pavement temperature prediction with applying a heat-balance model. The significant features of this model are to consider heat transfer at the bottom of bridge deck and to concern the influence of the running vehicles such as any radiation screened by and thermal energy released from the vehicles. Then、 the study verifies model’s performance with demonstrating pavement temperature observation. Preliminary result shows that the value of Root Mean-Square Error (RMSE) at the top surface is 2.1 degree Celsius and at the bottom surface is 0.8 degree Celsius. |
