At present, with the operation of every large passenger traffic special line, the high-speed railway of China enters a fast developing period, thus the railway puts forword a lot of new challenges of the designing and operation and maintaining. 目前,随着各大客运专线的开工建设,中国的高速铁路进入快速发展时期,从而对铁路的设计、施工和养护维修提出了许多新的挑战。