EXPERIMENTAL VALIDATION OF FIVE FAILURE MODES AND THE PROPOSAL OF SEISMIC REINFORCEMENT IN THE RAILWAY EMBANKMENT

Abstract

 In order to prevent derailment of a train due to the huge earthquake, it is required to evaluate seismic performance of the different structures using the common index and improve it. In particular, it is important to reinforce embankments because these are highly used in the railway today. In this study, through the model tests mainly, the failure modes and deformation levels of the embankment and the appropriate seismic reinforcement methods are examined. The new findings are as follows; 1) The embankment-ground failure modes, which related to the embankment height, ground motion and the ground properties, are classified into five types. 2) The new classification corresponds to the deformation level as the common index of seismic performance. 3) It proved that the seismic reinforcement using tie rod can be applied to the conventional design, and the appropriate seismic reinforcement methods for embankment are proposed according to the five failure modes.