【英文标准名称】:Executionofspecialgeotechnicalworks-Micropiles
【原文标准名称】:特殊土工工程的实施.小型桩
【标准号】:BSEN14199-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-03-30
【实施或试行日期】:2005-03-30
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:抗弯应力;定义;监督(认可);生产;打桩工程;弯曲安全;建筑;防腐蚀;建筑产品;混凝土;土工学;螺旋桩;组合桩;旋转轴直径;施工材料;尺寸选定;设计;现场浇注混凝土构件;小型桩;基础;桩基础;负荷测量;规范(验收);基础工程;安全;预制配件;灰浆;加筋;特殊土工工程;灌浆;心土;现场勘测;结构构件;荷载能力;土木工程;桩;混凝土构件;现场浇注混凝土;打入桩;灌入桩;现场构筑件;结构工程;结构钢件
【英文主题词】:Bendingstress;Boredpiles;Civilengineering;Compositepiles;Concretecomponents;Concretes;Construction;Constructionmaterials;Constructionalproducts;Corrosionprotection;Definition;Definitions;Design;Dimensioning;Drivenpiles;Foundationengineering;Foundations;Geotechnics;Grouting;Injectionpiles;In-situconcrete;In-situconcreteconstruction;In-situconstruction;Loadcapacity;Loadmeasurement;Micropiles;Mortars;Pilefoundations;Piles;Piling;Prefabricatedparts;Production;Reinforcement;Safety;Safetyagainstbuckling;Shaftdiameter;Siteinvestigations;Specialgeotechnicalwork;Specification(approval);Structuralengineering;Structuralmembers;Structuralsteelmembers;Subsoil;Surveillance(approval)
【摘要】:1Thisdocumentestablishesgeneralprinciplesfortheexecutionofmicropiles.Theyarefor:—drilledmicropilesashaftdiameternotgreaterthan300mm;—drivenmicropilesashaftdiameteroramaximumshaftcrosssectionalextensionnotgreaterthan150mm.2Micropilesarestructuralmemberstotransferactionstothegroundandmaycontainbearingelementstotransferdirectlyorindirectlyloadsandortolimitdeformations.Theirshaftandbaseresistancemaybeimproved(mostlybygrouting)andtheymaybeconstructedwith(seeFigure1):—uniformcrosssection(straightshaft);or—telescopicallychangingshaftdimensions;—shaftenlargements;and/or—baseenlargement.3Otherthanpracticalconsiderations,therearenolimitationsregarding,length,rake(definitionofrake,seeFigure2),slendernessratioorshaftandbaseenlargements.4Theprovisionsofthedocumentapplyto(seeFigure3):—singlemicropiles;—micropilegroups;—reticulatedmicropiles;—micropilewalls.5Themicropileswhicharethesubjectofthisdocumentcanbeinstalledintothegroundusingdrilling,drivingoracombinationofthesemethods.6Thematerialofmicropilescoveredbythisdocumentcanbe:—steelorotherreinforcementmaterials;—grout,mortarorconcrete;—acombinationofabove.7Micropilesmaybeusedfor:—workingunderrestrictedaccessand/orheadroomconditions;—foundationsofnewstructures(particularlyinveryheterogeneoussoilorrockformations);—reinforcingorstrengtheningofexistingstructurestoincreasethecapacitytotransferloadtodepthwithacceptableloadsettlementcharacteristics,e.g.underpinningworks;—reducingsettlementsand/ordisplacements;—formingaretainingwall;—reinforcingofsoiltoformabearingand/orretainingstructure;—improvingslopestability;—securingagainstuplift;—otherapplicationswheremicropiletechniquesareappropriate.8Mixed-in-placecolumnsandtimberpilesarenotincludedinthisdocument.ColumnsconstructedbyjetgroutingarecoveredbyEN12716.GroundanchorsarecoveredbyEN1537.
【中国标准分类号】:P23
【国际标准分类号】:93_020
【页数】:52P.;A4
【正文语种】:英语