Abstract
In the Hanshin-Awaji Great Earthquake, which broke out at 5 : 46 a.m. on the latest Jan. 17. our Sanyo Shinkansen was seriously damaged, and its bullet train service between Shin-Osaka and Himeji Terminal had been disrupted until Apr. 8, the 80th day after the quake-attack. Therefore, in this paper, we briefly mentioned the structural damage on our Shinkansen facilities (viaducts, bridges, and so on) in addition to the outline of Shinkansen network, and introduced our presumption that the Instant Shear Failure of RC pillars caused the collapse of such pillars, which closely related to the viaduct/bridge-beam falls in this earthquake. Also, we mentioned the Steel-Plate Encasing Method, adopted as the most effective way to restore the damaged pillars, and indicated high increase of both toughness and quake-resistance of the restored pillars under this method. As, more-over, placing the fallen viaduct-slabs/PC bridge-beams at their right position safely had been another big problem, we briefly mentioned some methods adopted to execute such troublesome works well, and finally made a list to show the average form of steel-plate and grouting methods used in the process of the Steel-Plate Encasing Method.
