摘要
捣固作业是铁路散体道床养护维修作业中一项重要的工作,由于铁路散体道床是由形状大小各异的散粒体道砟组成的,这就给捣固效果的研究带来了一定的困难。为了从微观尺度上对铁路散体道床捣固作业进行研究,运用离散元分析方法,创建了铁路散体道床捣固作业的离散元分析模型,分析了捣固作业过程中道砟的流动趋势和道床的密实程度。分析表明,在捣固作业过程中,轨枕之间的道砟向轨枕下方有空隙的地方流动,轨枕下方捣固区域的道床密实程度得到了提高。
Tamping operation is an important work in the railway ballast maintenance and repair operations, because the railway ballast is composed of various shapes and sizes of granular ballast gravel, which bring some difficulty to research the tamping effect. In order to study on railway ballast under tamping operation from micro scale, the discrete element analysis model of railway ballast under tamping operation is created using discrete element method, and the research is done on the motion trend of ballast gravel and compaction degree of railway ballast during the tamping process. The analysis shows that the ballast gravels between sleepers are moved to fill the voids under sleeper and the ballast compactness in tamping area un- der sleeper is also improved during tamping process.
出处
《新技术新工艺》
2016年第2期62-64,共3页
New Technology & New Process
基金
云南省教育厅科学研究基金项目(2014Y056)
关键词
铁路散体道床
捣固
离散元
railway ballast, tamping, discrete element method
