To provide a method of aseismic reinforcing backfill ground, which contributes to reduction of dynamic earth pressure and hydraulic pressure occurring in the backfill ground developed on a rear surface of a structure at the time of an earthquake, and exerts excellent construction efficiency, and to provide a structure of seismically reinforcing the same.
According to the method, a cushioning layer 6 formed of a mixed material 5 consisting of rubber chips 5a and crushed stones 5b having almost the same particle diameter, is arranged along the rear surface of the structure 1. Then the dynamic earth pressure of the backfill ground 3, occurring due to the earthquake is transmitted via a pressure plate 8 to the cushioning layer 6 which then absorbs the dynamic earth pressure by virtue of elastic deformation of the rubber chips 5a while securing suitable voids therein. Further the voids having excellent water permeability function to reduce increased hydraulic pressure of the backfill ground 3, to thereby prevent liquefaction.
SUGANO TAKAHIRO
KIKUCHI YOSHIAKI
KISHIDA TAKAO
MITARAI YOSHIO
NAGATOME TAKESHI
KAWAI HIROYUKI
TAKEICHI HIDEO
ASHOK KUMAR KARMOKAR
TOA HARBOR WORKS CO LTD
BRIDGESTONE CORP