| 捣固作业对道砟破碎伤损影响规律的试验研究 |
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| 引用本文： | 韩宏洋,杨永平,杨轶科,杨思伟,徐旸,杨曦.捣固作业对道砟破碎伤损影响规律的试验研究[J].铁道建筑,2022(2):38-41. |
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| 作者姓名： | 韩宏洋 杨永平 杨轶科 杨思伟 徐旸 杨曦 |
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| 作者单位： | 中国铁道科学研究院研究生部;中国铁路昆明局集团有限公司;中国铁道科学研究院集团有限公司铁道建筑研究所 |
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| 基金项目： | 国家自然科学基金(51808556);中国国家铁路集团有限公司科技研究开发计划(P2019G030);中国铁道科学研究院集团有限公司基金(2020YJ204)。 |
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| 摘 要： | 通过原位捣固试验研究了捣固次数对道砟破碎的影响规律,并对道砟颗粒的典型破碎形式进行了分析.结果表明:捣固作业会引起道砟颗粒发生明显的破碎伤损,进而导致道砟整体级配发生显著变化,应在有砟道床的养护维修中予以重点关注.捣固作业最容易引起56～63 mm粒径的道砟颗粒发生破碎.对于运营期道床,捣固作业导致的道砟颗粒破碎会使2...
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| 关 键 词： | 有砟道床 捣固作业 捣固试验 道砟破碎 养护维修 道砟级配 |
Experimental Study on Influence Laws of Tamping Operation on Ballast Crushing and Damage |
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| HAN Hongyang,YANG Yongping,YANG Yike,YANG Siwei,XU Yang,YANG Xi.Experimental Study on Influence Laws of Tamping Operation on Ballast Crushing and Damage[J].Railway Engineering,2022(2):38-41. |
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| Authors: | HAN Hongyang YANG Yongping YANG Yike YANG Siwei XU Yang YANG Xi |
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| Institution: | (Postgraduate Department,China Academy of Railway Sciences,Bejing 100081,China;China Railway Kunming Group Co.Ltd,Kunming 650000,China;Railway Engineering Research Institute,China Academy of Raiway Sciences Corporation Limited,Beijing 100081,China) |
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| Abstract: | Through the in-situ tamping test,the influence laws of tamping times on ballast crushing was studied,and the typical crushing forms of ballast particles were analyzed.The results show that tamping operation will cause obvious crushing and damage of ballast particles,resulting in significant changes in the overall grading of ballast,which should be paid special attention to in the maintenance of ballast bed of ballasted track.Tamping operation is most likely to cause crushing of ballast particles with particle size of 56~63 mm.For the ballast bed during the operation period,the crushing of ballast particles caused by tamping operation will significantly increase the quality of ballast particles with a particle size of less than 25 mm,which is the main reason for the increase of ballast bed quality pollution rate. |
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| Keywords: | ballast bed tamping operation tamping test ballast crushing maintenance ballast grading |
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