Maintenance Strategy at Track Surface Irregularity Focused on Passengers'Comfort and Rationalization of Maintenance

运输的安全性和乘客的舒适度取决于轨道表面（铁路轨道、公路路面等）的维护水平，然而，在铁路工程领域和公路工程领域，维修技术是独立发展。本研究的最终目的是开发一套既适用于铁路轨道又适用于公路路面的路面不平度评价与控制系统。本研究从理论、现象、技术、操作、组织、经济等方面对公路（包括高速公路）和铁路（包括新干线）的整个养护系统进行了回顾，作为实现这一目的的准备工作。并找到了通用的系统维护流程和今后的技术研究重点。然后，按轨道表面状态指标、不平顺过程特征、轨道维修效果等分类进行了阐述。

Safety of transport and also passengers'comfort depend on maintenance level of track surface (railway track, road pavement etc.), however, that maintenance technology have developed independently in railway engineering field and highway engineering field. Final objective of this study is to develop estimation and control system for surface irregularity which can be applied generally both on railway track and road pavement.In this study as the preparatory srep for achieving the former objective, the authors review whole maintenance system in highway (inclyding expressway) and railway (including Shinkansen) from the view of low, phenomenam, technology, operation, organization, economy etc., and find the common systematic flow of maintenance and future technical research points. Then, authors clarify them by following categories, 1) indices of track surface condition 2) characteristics of irregularity process 3) effectiveness of track maintenance etc.