Research on Test Methods of the Ballast Status for Newly Built High-speed Railway

摘要

This paper comprehensively analyzed the four key indexes (longitudinal resistance, lateral resistance, supporting stiffness and density) which determine the ballast status of existing newly built high-speed railway. And the disadvantage of existing measurements is systematically analyzed. With the test results of the QinShen passenger-dedicated railway, the reasonable suggestions are proposed for the test and evaluation methods of the equality control indexes of the ballast status.