Behavior of the Geosynthetic-reinforced soil integral bridge used for the Shinkansen structure

Abstract

Authors developed Geosynthethic-reinforced soil integral bridge, which made to unify the Geosynthethic-reinforced soil structure and integral bridge, as construction method solves a problem of subsidence of back banking generated with expansion and contraction of beam by temperature change. Now, Geosynthethic-reinforced soil integral bridge is constructed with the Hokkaido Shinkansen. Authors are measuring during construction and long-term action in order to check an effect to the above-mentioned problem. As a result, it checked carrying out the action of the Cement improvement backfill and the integral bridge as one through the geotextile. Therefore, it is conceivable that the problem of subsidence of back banking, which arises with expansion and contraction of beam is solvable. In addition, it checked that the big displacement to a structure had not arisen until present.