高速铁路路基纤维混凝土封闭层施工技术  

Construction Technology of Fiber Concrete Sealing Layer for High Speed Railway Roadbed

作　　者：王占峰 孙明浩 渠述强 李明星 WANG Zhanfeng;SUN Minghao;QU Shuqiang;LI Mingxing(Jinan—Qingdao High Speed Railway Co.,Ltd.,Yantai 261400,Shandong,China)

机构地区：[1]济青高速铁路有限公司,山东烟台261400

出　　处：《路基工程》2024年第5期126-130,共5页Subgrade Engineering

摘　　要：介绍高速铁路路基纤维混凝土封闭层施工控制要点,自制混凝土振平装置控制排水坡度,确保封闭层坡率准确、排水通畅,采用后置法伸缩缝切缝工艺提升伸缩缝质量。分析封闭层常见的混凝土裂纹、积水等质量缺陷产生原因,提出病害预防措施和关键工序控制参数。The key points for the construction control of fiber reinforced concrete sealing layer on high-speed railway subgrade are introduced.By using a self-made concrete leveling device,the drainage slope is controlled to ensure accurate slope rate and smooth drainage of the sealing layer,and propose a post expansion joint cutting process to improve the quality of expansion joints.The causes of common quality defects such as concrete cracks and water accumulation in the sealing layer is analyzed and disease prevention measures and key process control parameters are proposed.

关 键 词：高铁路基 封闭层 纤维掺量 后置法切缝 嵌缝 质量控制 缺陷预防 耐久性 

分 类 号：U215[交通运输工程—道路与铁道工程]