SIMULATION OF VERTICAL SLIP FAULT EXPERIMENT BY DISCRETE ELEMENT METHOD

Abstract

 In the case of linear structures such as railway structures, it is inevitable to construct structures on faults or in the vicinity of faults, so it is necessary to take systematic countermeasures against fault displacement. Therefore, we are studying the development process of the shear zone around the railway structure and the interaction between the ground and the structure when the surface fault displacement acts on the structure by the discrete element method. In this paper, in order to confirm the applicability of the discrete element method, relatively large scale model experiments were conducted on vertical slip faults, and the test results were reproduced and analyzed using the individual element method.

 As a result, from the numerical analysis by the DEM, it was possible to reproduce the difference of the deformation situation of the ground surface due to the presence or absence of the railway structure. We could confirm the applicability of this method to slip fault. We plan to deepen the study on vertical slip fault using this method in the future.