Abstract: In order to ensure safety of high-speed railway transportation and improve work efficiency of completion acceptance, reduce test cost, save test time and put into operation as soon as possible, based on big data of dynamic detection of 101 high-speed railway projects in the actual acceptance work, dynamic inspection projects was analysed, studied and optimized. Firstly, experience and lessons in acceptance of high-speed railway from technical level was summarized. Secondly, existing problems were explored and analysed. Finally, improvement measures of high-speed railway completion acceptance system and technical standards was put forward. The results show that when revising supporting specifications for completion and acceptance of high-speed railway, testing items should be simplified based on big data of dynamic testing. Problems found in static acceptance inspection should be attached great importance, rectification before preliminary acceptance inspection can improve efficiency of completion acceptance inspection and provide more guarantees for operation safety of high-speed railway.

Key words: high-speed railway, completion acceptance, testing items, technical standard, safety assessment