3518 軌道模型の挙動に対する載荷条件の影響(次世代の鉄道の要素技術)(OS21 メンテナンスとコストダウン)(シンポジウム : 第7回鉄道技術連合シンポジウム(J-RAIL 2000))

概要

論文の詳細を見る
Small scale model tests were performed to evaluate effects of loading method on the distribution of vertical contact pressure between on the sleepers and the ballast and its change associated with the development of residual settlement of the sleepers by cyclic loading. In the fixed-place cyclic loading test, concentrated cyclic vertical load was applied at a selected place along a rail, in which the residual settlement became largest with the sleeper nearest the loading place, resulting into the smallest contact pressure at the sleeper when the vertical load became the minimum. In the moving loading test, a wheel with constant vertical load moved cyclically along the rail, as actual train loading, in which the distribution of the contact pressure of sleeper about the location of wheel did not changes largely irrespective of the location of wheel. For the similar vertical load, the manner of development of residual settlement of sleeper with the number of loading cycles was noticeably different between the two loading methods. These test results indicate that in some important aspects, the conventional fixedplace loading method could not be representative of actual full-scale train loading conditions.
一般社団法人日本機械学会の論文
2000-12-12