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| Research on Development Direction of Track Technology of Heavy － haul Railway |
| YANG De － xiu |
| The Third Railway Survey and Design Institute Group Corporation，Tianjin 300142，China |
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Abstract Research purposes: As the traffic volume of heavy － haul railway is big and the axle load of the train running on heavy haul railway is heavy，the damage of the track structure of heavy － haul railway is much intensified，so the higher requirement is needed for the track structure of the heavy － haul railway． Starting with the developments of the heavy － haul railways at home and aboard，after summing up and analyzing the current situations and existing problems of the track structure of the heavy － haul railway at home and aboard，this paper offers the advices on the development direction of the track technology of the heavy － haul railway for providing the reference to the research on the track technology of heavy － haul railway at home and abroad．
Research conclusions: The heavy haul railway is a system engineering，so in the research the following principles should be followed: the equal stress should be laid on the track subsystem and other subsystem，on the theoretical research and experiment research，and on the new track component research and new maintenance equipment research． Especially， the structure theoretical research must be stressed，the new track structure research and new track components research should be promoted，the detection and maintenance technologies of the track of heavy － haul railway should be strengthened，and the development of professional large － sized permanent way maintenance machine should be speeded up．
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Received: 05 November 2011
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2012, Vol. 29 
