[Scaffolding Construction Achievements] Nakahama Bridge

It has become possible to install scaffolding without damaging the main structure, the bridge girder, at all!

We would like to introduce our construction achievements for the repair work on the Nakahama Bridge (a two-span simple pre-tensioned PC hollow slab bridge). Due to the structural characteristics of the superstructure, it was necessary to avoid post-installed anchor drilling into the bottom of the girders, so we adopted a "rack scaffold" that eliminates the need for these anchors. By using this scaffold, we were able to install it without damaging the main structure of the bridge girders at all. Although there were intersecting properties that served as a navigation route, we were able to minimize the impact on passing vessels by moving the rack scaffold's movable floor outside the navigation route when not in use. 【Overview】 ■ Location/Prefecture: Chiba Prefecture ■ Client: Chiba City ■ Construction Company: Toa Construction Co., Ltd. ■ Start of Use: July 2012 ■ Local workers' experience with rack scaffold installation: First time ■ Presence of rack scaffold handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.