Abstract
There has recently been a requirement for constructive structures to be efficiently maintained and managed. Specifically, steel bridges for railways, many of which are past their design service life, often continue to be used as matters now stand. As another big issue for steel bridges in railways, on the other hand, there is a subject on how to suppress acoustic noises as well as the life prolongation. Therefore, this research offers a new composite-revamping method for railway bridges by assuming composite remodeling process of existing steel bridges having no specific fissure damages or serious corrosions and effectively making use of relatively new materials to it. Furthermore, it was confirmed by the construction tests using actual steel bridges that the switching work can be performed well even under strict limitation. Moreover, effects of noise reduction and improved stiffness were further confirmed through hammer-impact tests (vibration-measurement tests) and loading tests in order to prove the efficacy of the composite remodeling.
