摘要
根据大型钻孔灌注桩原位测试结果 ,分析了摩擦型桩的承载力工作机制 ,提出了在粘性土层中单桩的桩侧土层以及桩土接触面上 ,有效应力—排水状态占优的观点。根据这一观点 ,分析了桩侧粘性土应力水平对其极限侧摩阻力的影响。根据粘性土层的物理力学指标及物理状态指标间的差异性 ,讨论了桩侧极限摩阻力规范取值方法中存在的问题。所陈述的观点 。
The axial resistance of friction piles was discussed,form the results of full scale load tests,and the effective stress -drained shear state would be developed particularly in the interface between piles and clays.By this,the unit ultimate shaft resistance as a function of the stress level of clays was depicted.With regard to the conflict between shear strengths of clay and its liquidity index,the determination of unit ultimate shaft friction in criterions was analyzed.This documentation gives guidance for determination of single pile axial resistance and development of correlative codes in future.
出处
《公路交通科技》
CSCD
北大核心
2000年第z1期-,共5页
Journal of Highway and Transportation Research and Development
关键词
摩擦型桩
单桩承载力
桩侧极限摩阻力
Friction piles
Single pile axial resistance
Unit ultimate shaft friction
