The bearing capacity of super-long and large-diameter bored pile tip is influenced by the facts including construction process,depth effect,size effect and so on.
阐述了超长大直径钻孔灌注桩桩端承载力的影响因素,包括施工工艺、深度效应和尺寸效应等。
The analysis of pile tip settlement measuring and the data of pile testing,has ex-pressed that the stress-strain process of upper loads on pile shaft and foundation soil has elastic deformation characteristics of both pile and foundation soil.
桩端沉降测量和试桩资料的分析结果表明,桩在传递上部荷载与地基土之间产生的应力应变过程,表现为桩的弹性杆件和地基土的弹—塑性变形特征。
Axial pull-out test of core concrete of prestressed concrete pipe piles and analysis of stress at the pile end;
填芯混凝土轴拔试验及桩端应力分析
The paper introduced the design and construction of pile end bearing layer strengthening for assuring the engineering quality.
由于前期地质钻探比较简单,致使桩端持力层位于岩溶(溶蚀、溶槽及溶洞等)不良地层,发现后桩基已施工完成,因此采取补强加固措施,以确保工程的质量安全。
The paper describes the conditions of realizing reasonable pile end grouting;pile end grouting can improve mechanics of single pile bearing capacity and impact analysis of grouting reinforcement.
并阐述了实现合理的桩端注浆条件,桩端注浆提高单桩承载力的机理以及注浆加固效果分析。