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1、浅论钻孔灌注桩的施工及监理摘要:本文从施工及监理的角度,较为详尽的阐述了钻孔灌注桩的施工技术及质量监理的要点,并对现阶段设计中存在的问题提出了个人意见。Abstract:thisarticlefromtheperspectiveoftheconstructionandsupervision,moredetailedexpoundsthemainpointsoftheboredpilesconstructiontechnologyandqualitysupervision,andthepresentproblemsexistinginthedesignofindividualopi
2、nionsareputforward.关键词:桩基础现场施工施工管理Keywords:pilefoundationconstructionconstructionmanagementonsite一.引言A.Theintroduction 近几年,随着大批高层建筑及高等级公路的建设,作为基础承力普遍采用的一种形式——钻孔灌注桩,在现阶段的施工中得到了广泛应用。但在施工过程中因工艺落后、地下施工,情况不明确等原因仍存在较多问题,本文着重从工程实践及监理的角度,对钻孔灌注桩的主要问题进行探讨。Inrecentyears,withthelargenumberofhigh-risebui
3、ldingandtheconstructionofhigh-gradehighway,asaformofbasicloadcarryinggenerallyused-boredpiles,hasbeenwidelyusedinthepresentstageofconstruction.Butduetobackwardtechnology,theundergroundconstructioninconstructionprocess,thesituationisnotclearbecausetherearemoreproblems,suchas,inthispaper,fromth
4、eperspectiveofengineeringpracticeandsupervisionforboredpilesofthemainproblemsarediscussed.二.施工监理与工程管理2.Constructionsupervisionandprojectmanagement 按照国家现行有关规范施工并不存在什么困难,然而施工质量却常常达不到要求,如施工单位在施工中能对最薄弱的环节予以关注,予以加强,就能收到事半功倍的效果。下面对钻孔灌注桩施工中影响承载力及的施工监理的要点作一剖析。Inaccordancewiththerelevantnationalcurren
5、tspecificationthereisnodifficultyintheconstruction,constructionquality,however,oftencannotmeettherequirements,suchastheconstructionunitpayattentiontotheweakestlinkinthecourseofconstruction,tostrengthen,cangettwicetheresultwithhalftheeffort.Inthefaceofboredpilesconstructionundertheinfluencebea
6、ringcapacityandthemainpointsoftheconstructionsupervisionofprofiling.(一)施工监理要点(a)constructionsupervisionpoints1.孔的垂直度1.Theholeoftheverticaldegree 钻孔灌注桩的垂直度是保证承载能力的重要一环,目前绝大多数的施工现场不检查垂直度,有的单位没有检查设备或根本不知道如何检测,有的单位则因测孔斜费时费力不愿多此一举。斜率超标,桩的受力状态被改变,桩头偏位,影响上部结构质量,严重影响钢筋笼的安置;在砂土类地层中孔壁极易塌孔,沉渣不宜清除。Bored
7、pilesofverticalityisoneofthemostimportantaspectsofthebearingcapacity,atpresentmostoftheconstructionsitedonotcheckperpendicularity,someunitsdidnotcheckordon'tknowhowtodetectequipment,time-consumingholeinclinationformeasuringsomeunitsdon'twantt