Summary
Partial replacement of contact wires using splice fittings (splicer) is a cost-saving and labor-reducing technique desired in high-speed railways. However, concerns have arisen due to accidents, such as contact wire breakages at the splicer position. To address this issue, it is necessary to understand the wave interaction caused by splicer installation on the overhead contact line. While some studies have used simulations to analyze the transient response at these points, there is a lack of qualitative knowledge from experimental and analytical studies. Therefore, this study conducted experiments using actual equipment and developed an analytical model using an infinite string with a one-degree-of-freedom system to represent the splicer. This study aims to provide useful guidelines for partial replacement in high-speed railways.
