地基基础单桩竖向抗压静载试验研究
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摘要
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.
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.
引文
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[2]杨景峰,张文杰,赵海玉.旋挖钻机施工工艺及控制[J].交通科技,2006(6):29-30.
[3]李林,闵峰.旋挖钻机施工钻孔灌注桩的工艺研究[J].中国工程科学,2010,12(3):33-36.
[4]刘卫萍.单桩竖向抗压静载试验仪器设备的选择与安装[J].工程质量,2006(12):49-51.
[5]方卫东.大吨位基桩单桩竖向抗压静载试验检测方案[J].西部探矿工程,2005(7):9-10.
[6]陈秀星.单桩竖向抗压静载法在工程建设中的应用[J].江西建材,2015(14):127-128.
[7]常福远,宋玉才.南水北调漕河渡槽3标段桩基13 000 k N竖向抗压静载试验及分析[J].岩土工程技术,2007,21(6):315-318.
[8]王林兵.漕河渡槽3标段桩基竖向抗压静载试验分析[J].人民长江,2007,38(11):53-54.
[9]江杰,陈骏,肖萌,等.南宁软岩地基大直径灌注桩极限承载力预测[J].长江科学院院报,2017,34(12):73-77.
[10]郝俊丽.浅析钻孔灌注桩单桩竖向抗压静载试验施工工艺[J].内蒙古水利,2017(1):21-22.