Reinforced Roadbed Deformation Characteristics Under Moving Wheel Loads

摘要

For the purposes of an introductory study into performance-based design methods for asphalt concrete-reinforced roadbeds, the deformation characteristics of roadbeds were investigated by means of scale model tests. A fixed-point loading test applying repeated loads to the same point of a rail, which is the conventional loading test method, has an inevitable problem in that the settlement of the sleeper just beneath the loading point becomes greater than that of adjacent sleepers. To avoid this problem, a moving-wheel loading method was adopted for this study. This paper discusses the differences between the deformation characteristics of reinforced roadbeds under fixed-point and moving-wheel loads.