四川水力发电2024，Vol.43Issue(z2)：17-23,7.
高速铁路CFG桩的终孔电流值与路基沉降相关性研究
Research on Correlation between the Final Hole Current Value of CFG Piles and Subgrade Settlement in High-Speed Railway
李成彦 1王会超 1陈学军1
作者信息
- 1. 中国水利水电第五工程局有限公司,四川 成都 610066
- 折叠
摘要
Abstract
In the industry of high-speed railway(350Km/h)subgrade foundation,CFG pile composite founda-tion treatment is generally adopted.Based on the CFG pile composite foundation treatment project for a rail-way station,this article investigates the impact of the final hole current value on the pile bottom quality through analyzing the pile-forming current value records,settlement deformation monitoring data,current val-ues of different soil layers(current value of the bearing stratum)during drilling,as well as the post-construc-tion bearing capacity of single piles and subgrade settlement deformation observation data.The research finds that the value of the final hole current affects the quality of the pile bottom,thereby influencing the bearing ca-pacity of the composite foundation.The results show that the magnitude of the CFG pile construction current value can reflect the final effect of foundation treatment to a certain extent,which has a significant impact on the pile quality.It can greatly improve the pile quality,effectively enhance the bearing capacity of the single pile foundation,strengthen the bearing capacity of the composite foundation,and reduce post-construction set-tlement.The research results provide theoretical basis and practical guidance for the construction control of CFG piles in high-speed railways,and serve as a useful reference for solving the problem of foundation settle-ment control in high-speed railway construction.关键词
高速铁路/CFG桩基/终孔电流值/路基沉降Key words
High-speed railway/CFG pile foundation/Final hole current value/Foundation settlement分类
交通运输引用本文复制引用
李成彦,王会超,陈学军..高速铁路CFG桩的终孔电流值与路基沉降相关性研究[J].四川水力发电,2024,43(z2):17-23,7.
