-51-第7期新国展二期项目试验桩静载试验数据分析周晓波1，吴兴征2，辛军霞1（1.北京市建设工程质量第一检测所有限责任公司，北京100039；2.河北大学建筑工程学院，河北保定071002）【摘要】试验桩单桩竖向抗压静载试验是施工前为桩基设计提供依据的重要检测手段。结合新国展二期项目，针对6根试验桩的静载检测成果，探讨其采用桩侧和桩底注浆等施工工艺后单桩的承载传递规律。采用振弦式传感器测读钢筋应变量，由此得到桩身检测截面轴力分布，最终计算各土层的侧摩阻力。结果表明，各测试断面轴力随着荷载增加而增大，在同级荷载水平下轴力随着深度增加而逐渐减小。对于接近桩底的位置，其侧摩阻力的发挥随荷载增加而呈增大趋势。【关键词】基桩；静载试验；桩身内力；侧摩阻力【中图分类号】TU473.1【文献标志码】A【文章编号】1671－3702（2023）07－0051－05作者简介：周晓波，男，工程师，研究方向为地基基础检测与岩土工程。AnalysesofStaticLoadingTestsforPilotPilesfromPhaseIIProjectofNewNationalExhibitionZHOUXiaobo1，WUXingzheng2，XINJunxia1（1.BeijingBuildingConstructionResearchInstitute，Beijing100039，China；2.CollegeofCivilEngineeringandArchitecture，HebeiUniversity，BaodingHebei071002，China）Abstract：Theverticalcompressivestaticloadtestofthepilotpileisanimportantevaluationmeansofprovidingabasisforthedesignofthepilefoundationbeforetheconstructionofimportantprojects.Basedonthestaticloadtestingresultsofthesixpilotpilesinthesecond-phaseoftheNewInternationalExhibitionproject，thecharacteristicsofloadtransferringofasinglepileafterusingconstructiontechniquessuchasgroutingalongthepilesideandatthepilebottomarediscussed.Thestrainofthesteelreinforcementsismeasuredbythevibratingwiresensor，andtheaxialforcedistributionofeachdetectionsectionalongthepileshaftisobtained.Consequently，theshaftfrictionresistanceofeachsoillayeriscalculated.Theresultsshowthattheaxialforceofeachtestsectionincreaseswiththeincreasingoftheload，andtheaxialforcegraduallydecreaseswiththeincreaseofthedepthunderthesameloadlevel.Forthesectionclosetothebottomofthepile，theshaftfrictionresistanceincreaseswiththeincreasingoftheload.Keywords：foundationpile；statictest...
