桩底沉渣与桩周泥皮对大直径钻孔灌注桩竖向承载力的影响分析  

Impact of Bottom Settlings and Mud Cake on Vertical Supporting Capacity of Large-diameter Predrilled Cast-in-place Pile

作　　者：喻小明[1] 潘军[1] 杨年宏 李彬[1] 

机构地区：[1]长沙理工大学桥梁与结构工程学院,湖南长沙410076 [2]益阳市交通规划勘测设计院,湖南益阳413000

出　　处：《矿冶工程》2006年第6期9-12,共4页Mining and Metallurgical Engineering

摘　　要：采用有限元数值模拟的方法计算大直径钻孔灌注桩的极限承载力,对桩底沉渣厚度改变、桩周泥皮厚度变化对单桩极限承载力的影响进行了计算分析,指出了控制沉渣、泥皮厚度的重要性,提出了控制沉渣与泥皮厚度的具体措施。Using numerical simulation finite-element method,the vertical supporting capacity of large diameter predrilled cast-in-place pile is calculated. The influences of different thickness of bottom settlings are analyzed under pile and mud cakes around pile on the ultimate supporting capacity of single pile. The importance of controlling the thickness of bottom settlings and mud cake is discussed. Some particular measures were put forward as well.

关 键 词：大直径钻孔 灌注桩 桩底 沉渣 桩周泥皮 桩周摩阻力 极限承载力 

分 类 号：TU753[建筑科学—建筑技术科学]