台背回填中碎石与新型胶凝材料含量应用研究  

Application Study on the Content of Crushed Stone and New Cementitious Material in Backfill

作　　者：王海军 WANG Hai-jun(CRCC Harbour&Channel Engineering Bureau Group Co.,Ltd.,Zhuhai 519070,China)

机构地区：[1]中国铁建港航局集团有限公司,珠海519070

出　　处：《价值工程》2025年第4期117-120,共4页Value Engineering

摘　　要：为解决台背回填中桥头跳车问题,以武汉至红安高速公路第二标段台背回填为例,对回填料取样,研究不同颗粒含量碎石回填料的击实特性、承载比特性;在此基础上,选择粗颗粒(>5mm)含量为30%的回填料进行新型胶凝材料含量的水稳性、抗冻性研究。研究结果表明:碎石粗颗粒含量为30%且新型胶凝材料含量为10%的回填料的击实特性、承载比、水稳性、抗冻性均表现出良好的性能,满足实际施工要求。In order to solve the problem of bridge head jump in the backfill,taking the backfill of the second section of Wuhan-Hongan Expressway as an example,the compaction characteristics and load ratio characteristics of gravel backfill with different particle content were studied.On this basis,the water stability and frost resistance of the new cementative material content were studied by selecting a backfiller with a coarse particle content of 30%(>5mm).The results show that the compaction characteristics,bearing ratio,water stability and frost resistance of the backfill with 30%coarse particle content and 10%new cementing material content show good performance,which can meet the actual construction requirements.

关 键 词：台背回填 碎石含量占比 新型胶凝材料 

分 类 号：U416.1[交通运输工程—道路与铁道工程]