重载铁路路基填料性能改良试验研究
摘要:基于静动力学试验，研究纤维改良、固化剂改良及纤维–固化剂改良三种加固方法对重载铁路路基填料性能的影响，进而提出最佳改良方案。结果表明：采用固化剂改良，固化土中固化剂掺量为5%时，强度达到峰值，养护时间越长强度越高。采用纤维改良，当纤维掺量为0.2%时，纤维土静动力学性能达到最佳；当纤维长度为0～12 mm时，强度随着纤维长度的增加而增强，当长度为12～18 mm时，强度随着纤维长度的增加而降低。采用纤维–固化剂联合改良方案加固效果最好。建议该地区采用纤维–固化剂联合改良方案增强路基填料物理力学性能，试验得出的最佳掺量为：固化剂掺量5%，纤维掺量0.2%，纤维长度12 mm。
Abstract:Based on static and dynamic triaxial tests, the effects of three reinforcement methods, including fiber improvement, curing agent improvement, and fiber - curing agent improvement, on the performance of heavy-haul railway subgrade filler were studied, and the best improvement scheme was proposed. The results show that when the curing agent content in the curing soil is 5%, the strength reaches the peak, and the longer the curing time, the higher the strength. With fiber improvement, when the fiber content is 0.2%, the soil static dynamic performance of fiber reaches the best; When the fiber length is 0~12 mm, the strength increases with the increase of fiber length, and when the length is 12~18 mm, the strength decreases with the increase of fiber length. The fiber-curing agent combined improvement scheme is the best reinforcement effect. It is recommended that the fiber-curing agent combined improvement scheme be used to enhance the mechanical properties of the subgrade filler, and the optimal curing agent content is 5%, fiber content is 0.2%, and fiber length is 12 mm.
中文标题：
重载铁路路基填料性能改良试验研究
Experimental Study on Improvement of Heavy-haul Railway Subgrade Filler
作者：
武伟刚1, 2,,李岩3
Wu Weigang1, 2,,Li Yan3
作者简介:武伟刚，男，1984年生，汉族，甘肃秦安人，硕士，讲师，主要从事道路与铁道工程方面研究。E-mail：59927903@qq.com
通讯地址：
1.四川铁道职业学院，四川成都 170032 2.西南交通大学土木工程学院，四川成都 170032 3.中国十九冶集团有限公司，河北石家庄 050000
1.SichuanRailwayVocationalCollege,Chengdu170032,Sichuan,China 2.SchoolofCivilEngineering,SouthwestJiaotongUniversity,Chengdu170032,Sichuan,China 3.China19thMetallurgicalGroupCo.,Ltd.,Shijiazhuang050000,Hebei,China
中图分类号:TU41
doi:10.3969/j.issn.1007-2993.2024.03.013
出版物：岩土工程技术
收稿日期:2023-03-14
修回日期:2023-08-14
录用日期:2023-12-25
刊出日期:2024-06-12
关键词:路基填料,纤维改良,固化剂改良,纤维–固化剂改良
Key words:subgrade filler,fiber improvement,curing agent improvement,fiber-curing agent improvement
文档包含图片数量：图片(13)张
文档包含表格数量：表格(5)个
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