철도교용 신축이음장치의 개선 및 적용성 연구

초록

Expansion joint system of elastic polyethylene pad type applied to railway bridge is composed with elastic sealing compound, steel cover and anchor bolt. The existing anchor bolt which toe is wedge has a problem that leads to the crack causing by initial fastening force of the anchor bolt. Pull-out, shearing force and fatigue test were performed after setting the screw styled anchor bolt. The result shows that the screw styled anchor bolt has equal or more mechanical property in pull-out and shear force compared with existing products. Also, it is thought that new expansion joint system has been developed relating with maintenance characteristics of railway bridge by prompt replacement.