铁道标准设计2016，Vol.60Issue(10)：9-13,5.DOI:10.13238/j.issn.1004-2954.2016.10.003
基于Ⅱ型弹条的小半径曲线扣件设计研究
Research on the Design of Small Radius Curve Fastener Based on Ⅱ-type Elastic Rod Fastener
摘要
Abstract
In view of the current problems related to the general fastening system on small radius curve, such as the rapid elastic bar pressure attenuation, the fracture of gauge block and the bearing plate cracking an optimization research is conducted on fastening system. Based on Ⅱ-type elastic rod fastener, with additional 12 mm thick steel plate and 4 mm thick nylon gaskets, the baffle is integrated with the steel plate to share the lateral force coming from the rail. The improved fastener system is used with Ⅲa-type sleeper to allow the gauge adjustment range to reach 18 mm and meet operation requirement for additional 15 mm of small radius curve gauge. The finite element software is used to calculate various technical indexes of the elastic bar used for different radius. The results indicate that when 14 mm diameter rod is selected, the buckle pressure is relatively high, the maximum equivalent stress and displacement are suitable and the properties are optimal. The optimized fastening system is installed and tested on a small radius curve in a marshalling yard. The operation of the system in the past year shows that the fastening system is in good condition without fastener loosening and gauge widening and the defects of Ⅲa-type sleeper are much reduced.关键词
小半径曲线/扣件系统/弹条/轨距加宽/Ⅲa型轨枕Key words
Small radius curve/Fastening system/Elastic bar/Gauge widening/Ⅲa-type sleeper分类
交通工程引用本文复制引用
陈漫,肖杰灵,张波,刘淦中,刘成..基于Ⅱ型弹条的小半径曲线扣件设计研究[J].铁道标准设计,2016,60(10):9-13,5.基金项目
国家杰出青年科学基金(编号:51425804) （编号:51425804）
