정 · 동적 열차하중 재하 시 유도상 아스팔트 노반의 거동 특성

초록

Ballasted track is inexpensive of construction costs and easy of maintenance relatively but premise that ongoing maintenance, thus it is required laborsaving of track in order to solve the problem of shortage technical personnel due to the low fertility and aging society. The introduction of asphalt roadbed which is widely applied to in Europe and Japan is require in order to reduce maintenance and cost of these track. Ballasted Asphalt roadbed, installed on the upper of reinforced roadbed, is a structure which can reduce the maintenance by minimizing of mud-pumping occurrence and ballast penetration as prevented roadbed infiltration of rainwater and distributed by the train load. In this paper, we was created ballasted asphalt roadbed of real scale and performed static and dynamic train loading experiments and then we was compare and review with conventional ballasted track. We confirmed to applicability of ballasted asphalt roadbed at the railway roadbed by earth pressure, elastic and plastic displacement analysis of the results.