リニューアル(3)

[VI-691] Study on a launching renewal method for existing road bridges

〇Akio Shirozu¹, Seiji Takeuchi¹ (1.Yokogawa Bridge Corp.)

Keywords:renewal of bridges, launching method, lifter, accelerated construction

Renewal work of the bridge in use requires some work space and much time. In this study, the applicability of the longitudinal girder renewal method, which can handle road bridges without a working space in the direction perpendicular to the bridge axis, is examined. The study consists of two lifters, a construction girder between them, and a beam structure supported by the lifters. In this way, this beam structure that can cover the construction area in a short time will be constructed. It is judged that the application of the launching renewal method is effective for space and time.