地基基础单桩竖向抗压静载试验研究

Study on vertical compressive static load test of single pile of foundation

基于高层地基桩基础单桩承载力的重要性,采用慢速维持荷载法对某大型工程项目中的两根桩进行单桩竖向抗压静载试验,根据试验数据获得单桩竖向抗压静载试验桩顶沉降量与荷载对应关系曲线及单桩竖向抗压静载试验桩沉降与时间对数关系曲线,分析曲线推导出各桩的最终沉降和极限承载力。该试验研究可为高层建筑地基的桩基础设计提供可靠依据。

Based on the importance of high-rise building foundation pile,single pile vertical compressive static load tests have been done in the two piles using slow maintain load method on a large project. According to the test data,pile top settlement and the corresponding relationship curve and pile settlement and time logarithmic relationship curve have obtained by single pile vertical compressive static load test,and then analysis of curve is deduced to the final settlement and the limit bearing capacity of pile. The experimental study can provide reliable basis for the design of pile foundation for high-rise buildings.