Reinforced concrete viaducts of the Tohoku Shinkansen suffered considerable damage especially in mid-height beams due to the Miyagi-ken-oki Earthquake (1978), and there were quite a number that would not have been able to withstand use without remedy. In this study the strength-deformation characteristics of 1/2- or 1/3-scale model specimens of rigid-frame viaduct and mid-height beams are obtained experimentally, and the bending shear characteristics of mid-height beams are examined. Further, various repair methods are applied to specimens loaded to different levels with crack width or displacement as the yardstick, and the effects are investigated. As a result, it is confirmed that member yielding load, resistance, deformation performance, etc. , are not less than those of the original member if repaired properly by injecting epoxy resin in cracked parts.
|Number of pages||10|
|Journal||Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers|
|Publication status||Published - 1985 Sep 1|
ASJC Scopus subject areas