논문 상세보기
pp.375-379
This study focused on whether the large-scale expansion joints of the Diamond Bridge, a suspension bridge, is being appropriately and efficiently utilized during maintenance period. In this study, a linear regression model was developed by analyzing long-term monitoring data from the bridge, considering the bridge design standards in Korea and building-related literatures. Then, the reliability of the model was verified through a theoretical review on the relationship between temperature change and expansion joint displacement. The expansion joint displacements of the bridge showed a regular time series graph with temperature change. A linear regression analysis indicated that the slope of the graph was very similar to the displacement of steel due to linear expansion coefficient, with a high determination coefficient (R2=0.979), meaning that the actual behavior of the bridge conforms to the theory. Considering the expansion joint specification of the bridge and existing external loads, actual expansion joint displacement was only 8.5 percent of its specification, so the specification can be adjusted in order that actual expansion joint displacement can be up to 21.6 percent of its specification. In this case, expansion joint cost can be reduced as much as 78.4 percent of its original cost.
