전철주 하중 작용 시 철도보강노반 설계

초록

Double reinforced subgrade(DRS) for railways is new type roadbed structure, which could minimize residual settlement after track construction and maintain its function as a permanent railway roadbed under large cyclic load. With newly developed design program, the safety analysis(overturning and sliding) of the DRS was performed according to length and stiffness of short and long geotextile reinforcement under catenary pole load conditions. We could evaluate required design strength of short geogrids as over 50kN/m under catenary pole load conditions.