某工程考慮負(fù)摩阻力時(shí)基樁豎向承載力的取值

1、某工程考慮負(fù)摩阻力時(shí)基樁豎向承載力的取值某工程考慮負(fù)摩阻力時(shí)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(jì)院郵編：362000）[摘要摘要]本文通過工程實(shí)例對(duì)考慮負(fù)摩阻力的基樁進(jìn)行了單樁豎向承載力的計(jì)算和分析對(duì)比理論分析表明在有負(fù)摩阻力產(chǎn)生的場(chǎng)地樁的實(shí)際受力和靜載試驗(yàn)時(shí)的受力與變形性狀存在較大的差異。根據(jù)靜載試驗(yàn)時(shí)樁土受力和變形特點(diǎn)指出對(duì)于端承型樁單樁豎向極限承載力設(shè)計(jì)值不應(yīng)直接取自靜載試驗(yàn)的豎向極限承載力，應(yīng)將試驗(yàn)結(jié)果扣除由負(fù)摩

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

3、hegreatdifferenceofpiles’loadingstressdefmationacteristicsintheconstructionsitewithnegativefrictionfceinstaticloadingtestthroughtheeticalanalysisonthecalculationcomparativeanalysisonverticalbearingcapacityofsinglepileinc

4、onsiderationofnegativefrictionfceoffoundationpilesbasedonengineeringpractice.Duetothepile’sloadingstressdefmationacteristicsinstaticloadingtestthedesignedvalueofsingleendbearingpileverticalultimateloadingcapacityshouldno

5、tdirectlybetakeninthestaticloadingtest.Befeusingthetestingresulttopiledesignationthedownwardpullcausedbythenegativefrictionfceshouldbedeductedtherewillbeunsafefactsexistedinthepiles’bearingcapacity.Theinspectionofthepile