基于静力触探试验的静压桩沉桩阻力估算  

Estimation of Resistance of Static Pressure Pile Sinking Based on Cone Penetration Test

作　　者：李雨浓[1,2] 李镜培[1,2] 赵仲芳[1,2] 

机构地区：[1]同济大学岩土及地下工程教育部重点实验室,上海200092 [2]同济大学地下建筑与工程系,上海200092

出　　处：《路基工程》2010年第3期67-69,共3页Subgrade Engineering

摘　　要：以上海软土地区静压桩实测压桩力及静力触探资料为依据,结合MATLAB编制的计算可视化程序,分析了桩端以上、以下不同深度范围内土层的静力触探比贯入阻力平均值ps对沉桩阻力的影响;讨论了桩身侧摩阻力的沉桩特性;提出了用平均值ps预估压桩阻力的经验公式。实例验证表明,计算结果与实际情况较吻合。估算方法对采用静力压桩的设计施工、判断沉桩可能性及设备选型等具有参考价值。Based on the measured pile stress and static penetration in Shanghai soft soil area,combined with visual program calculation prepared by MATLAB,this paper analyzes the influence of soil static penetration resistance average ps on pile sinking resistance in different depths above and below pile tip,discusses sinking characteristics of pile side frictional resistance and puts forward the empirical formula to pre-estimate pile penetration resistance with average ps.It is indicated from verification that calculation result is in accordance with the practical situation.Estimation method has referential value for design construction of statically sinking pile,judgment of pile sinking possibility and selection of equipments.

关 键 词：静压桩 静力触探 压桩阻力估算 桩端阻力 桩侧摩阻力 

分 类 号：TU473.13[建筑科学—结构工程]