|
|
|
| Research on the Fastening System Selection of ffigh - speed Railway Ballastless Track in Cold Area |
| LIN Hong - song，XU Hao, YAN Hua，YAO Li |
| (China Railway Eryuan Engineering Group Co. Ltd，Chengdu，Sichuan 610031，China) |
|
|
|
|
Abstract Abstract:Research purposes: Fastening system is one of tlie key components in bElastless track，in order to guide the fastening system selection of high - speed railway ballastless track in cold area，the requirements of tlie fastening system of ballastless track in cold area were analyzed combined with the engineering characteristics. The application of ballastless track fastening system at home and abroad was introduced， and the comparative analysis of technical characteristics and adaptability in cold area of fastening system were carried，and recommendations for fastening system selection were proposed. Research conclusions:( 1 ) The ability of geometry keeping and adjusting， longitudinal resistance，maintenance， the stiffness of elastic cushion， insulation performance and extreme temperature adaptability should be taken into account when selecting the fastening system of baiastless track in cold area. (2) Fastening system with bolt has strong adjusting ability and the clamping force could recover. (3 ) The nonseparated fastening system has less components and is easy to maintain. (4) The fastening system with shoulder has strong bearing capacity. The low temperature performance of composite material and the low temperature fatigue properties of clip) in fastening system should be researched. (5) This paper could provide the basis for the fastening system selection of high - speed railway baiastless track in cold area.
|
|
Received: 02 May 2017
|
|
|
|
|
|
|
2017, Vol. 34 
