Abstract：Research purposes: The purpose is to make the researches on the structural types of rail fastenings for ballastless track and their key technologies, and to propose the technical development thoughts and concrete design of rail fastenings for passenger dedicated railway line in China.
Research methods: The summary and analysis of structural types and technical features of rail fastenings for ballastless track at home and abroad are made in combination with experimental result of rail fastenings made in integral trial section for ballastless track on Suining-Chongqing Railway Line, and track situation of passenger dedicated railway line in China and its operation conditions.
Research results: The proposals are offered that for ballastless track it should be given priority to lay open latch impressed rail with iron tie plate and spring having bolt, to equip with iron tie plate and single layer or double layers elastic bedding, and to equip with no bed retaining fastenings for sub-rail foundation.
Research Conclusions: The main influencing factors on design of rail fastenings for ballastless track are rigidity insulation property, rail height and gauge adjustment ability. Therefore, the design can be made with node static rigidity between 25~50 kN/mm, rail height adjustment range not less than 30mm, gauge adjustment range between-10~+10 mm and ballast bed resistance not less than 3Ω·km. At the same time, the advanced technology of Vossloh and Pandrol's rail fastenings should imported under principle of self-creation in order to promote the technical development of Chinese railway.
2006, Vol. 23 
版权所有 © 2014 《铁道工程学报》编辑部