증속주행에 따른 바이모달트램 선로형 전용교량의 동적응답

초록

A Bi-modal tram has the advantage of a bus and a subway, and can run on an exclusive and general road. A pipe truss bridge, constructed for the bi-modal tram, has effect of self-weight reduction because the pipe truss bridge can have a long span. However, an analysis of dynamic response characteristics is required because this new bridge has never been constructed before. In this study, a speed increasing test on the pipe truss bridge was conducted with sensors at the bottom of the bridge. Also, dynamic response characteristics were analyzed by measuring displacements, the maximum vertical and horizontal accelerations about the new bridge through the test. Accelerometers and LVDTs are installed in the center and the 1/4 point of the span considering of symmetry. Also, dynamic responses by the running vehicle are analyzed by measuring displacement and vertical and horizontal accelerations on the new type bridge.