摘要
某工程超长桩现场静载荷试验,采用分布式光纤技术测算桩身轴力和桩侧摩阻力。光纤测量结果表明,在超长桩桩侧存在一定的负摩阻段。从桩侧土体液化和孔隙水压力变化等角度分析负摩阻力形成和发展的机理与原因,对后压浆超长桩的理论研究和工程应用有重要价值。
In-situ static load test of super-long piles using distributed optical fiber technique is studied in this paper. The measurements of the axial and lateral stress of the piles show that there are negative friction zones along the super-long pile. From both the soil liquefaction and changes of pore water pressure analysis as- pects, this paper analyses the generation and development of negative friction. It is valuable to the theoretical study and engineering application.
出处
《建筑技术》
北大核心
2009年第9期840-842,共3页
Architecture Technology
关键词
光纤测量
后压浆
桩侧负摩阻力
optical fiber measurement
post-grouting
negative friction of pile side
