大直径钻孔灌注摩擦桩的静承载特性  

Bearing Properties of Large Diameter Bored Cast-in-situ Friction Piles under Static Load

作　　者：赵顺波[1] 耿六成[2] 刘爱军[2] 孙尔超[3] 

机构地区：[1]华北水利水电学院土木系,河南郑州450045 [2]河北省水利厅南水北调中线工程办公室,河北石家庄050011 [3]河北省水利水电勘测设计研究院,天津300250

出　　处：《中国港湾建设》2001年第6期30-34,共5页China Harbour Engineering

基　　金：河北省南水北调中线工程勘察设计研究项目 (冀中线98-0 1)

摘　　要：本文依据 4个工程进行的 6根直径为 1.0 m、长度为 5 9～ 70 m的钻孔灌注摩擦桩的静载试验 ,对大直径钻孔灌注摩擦桩荷载的传递机理、荷载—沉降量曲线、桩身轴心压力沿深度的分布规律、桩侧摩阻力与桩土相对位移关系以及桩端反力等进行了计算分析 ,给出了主要土层的桩侧摩阻力与桩土相对位移关系曲线 。Based on the tests on the six bored cast in situ friction piles,which were 1 0 m in diameter each and 59 to 70 m long respectively,for 4 projects across the Yellow River,analyses were made on the translation mechanism of load,relationship of load to subsidence,distribution of centric compressed force along the pile depth,relationship of friction force around pile to relative displacement between pile and soil,and end reaction of the piles.The relationship of friction force around pile to relative displacement between pile and soil in the main soil layers,and the method considering the relative displacement between pile and soil for evaluating the ultimate bearing capacity of the large diameter bored cast in situ frction piles are also proposed.

关 键 词：钻孔灌注桩 静载试验 桩侧摩阻力 极限承载力 

分 类 号：TU473.11[建筑科学—结构工程]