某工程考慮負摩阻力時基樁豎向承載力的取值

1、某工程考慮負摩阻力時基樁豎向承載力的取值某工程考慮負摩阻力時基樁豎向承載力的取值彭惠菁（福建省泉州市住宅建筑設(shè)計院郵編：362000）[摘要摘要]本文通過工程實例對考慮負摩阻力的基樁進行了單樁豎向承載力的計算和分析對比理論分析表明在有負摩阻力產(chǎn)生的場地樁的實際受力和靜載試驗時的受力與變形性狀存在較大的差異。根據(jù)靜載試驗時樁土受力和變形特點指出對于端承型樁單樁豎向極限承載力設(shè)計值不應(yīng)直接取自靜載試驗的豎向極限承載力，應(yīng)將試驗結(jié)果扣除由負摩

2、阻力引起的下拉力后用于工程樁的設(shè)計否則樁的承載力將存在不安全的因素通過工程樁的檢測和竣工后的沉降監(jiān)測說明取值合理。[關(guān)鍵詞鍵詞]欠固結(jié)土負摩阻力樁基承載力靜載試驗ValuingofVerticalBearingCapacityofFoundationPilesinConsiderationofNegativeFrictionFceofAprojectPengHuijingAbstract:Thisarticledemonstratest

3、hegreatdifferenceofpiles’loadingstressdefmationacteristicsintheconstructionsitewithnegativefrictionfceinstaticloadingtestthroughtheeticalanalysisonthecalculationcomparativeanalysisonverticalbearingcapacityofsinglepileinc

4、onsiderationofnegativefrictionfceoffoundationpilesbasedonengineeringpractice.Duetothepile’sloadingstressdefmationacteristicsinstaticloadingtestthedesignedvalueofsingleendbearingpileverticalultimateloadingcapacityshouldno

5、tdirectlybetakeninthestaticloadingtest.Befeusingthetestingresulttopiledesignationthedownwardpullcausedbythenegativefrictionfceshouldbedeductedtherewillbeunsafefactsexistedinthepiles’bearingcapacity.Theinspectionofthepile