Bearing Capacity of Actual Existing Roadbed
Etsuo SEKINE, Katsumi MURAMOTO
The standard design of roadbed at earth structures was enacted in 1968. However,
the most of roadbeds at actual existing railways were constructed before 1968, so
a bearing capacity of these roadbed isn't clear. In case of that the bearing capacity
of the roadbed is small, ballast penetration into the roadbed and vibration of roadbed
increase at train passing, so track maintenance work increases. Therefore, a bearing
capacity of the roadbed is extremely important for reducing the amount of maintenance
work. Then, we investigated and analyzed existing roadbed in order to make clear a
bearing capacity of actual existing roadbed. The present paper describes outline of
bearing capacity of actual existing roadbed based on investigation and analysis.