钢结构厂房地脚螺栓的埋置方法

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

建设工程教育网()报名咨询电话:010-82326699免费热线:4008105999咨询时间:全天24小时服务(周六、周日及节假日不休息)1钢结构厂房地脚螺栓的埋置方法Theembeddingofanchorboltsonthesteelstructurefactorybuilding地脚螺栓的埋置是钢结构厂房施工的一大关键,直接影响到上部钢结构厂房的垂直度,方正度。若地脚螺栓的埋置偏差过大,则会对后期的上部施工中的结构螺栓,檩条螺栓,围梁螺栓的连接等造成很大的困难。在施工过程中,我们要着重控制地脚螺栓的平面位置,垂直度及螺栓钉标高,以尽可能减少上述误差。Fordirectinfluenceontheperpendicularityandsquare,theembeddingofanchorboltsisoneofthemostimportantpointsduringtheconstructionofsteelstructurebuilding.Therewouldbegreatdifficultiesinworkingonstructuralbolts,purlinebolts,andgirtboltsifthereisanydeclinationinembeddingtheanchorbolts.Duringconstruction,thegreatemphasisshouldbeplacedonthehorizontalposition,prependicularityandelevationofboltsinordertoreducesuchdeclinationtotheleast..要求:平面位置误差:+3mm,螺栓顶标高误差:+3mmBasicrequirements:Horizontalpositiondeclination:3mmAnchorboltstopelevationdeclination:3mm§1须配备的设备,工具及施工人员:Workingstaff,NecessaryequipmentandTools:1.1设备及工具:Equipmentandtools:光学水准仪及脚架,标尺1套Opticalwaterlevel&horseandstaffguage1建设工程教育网()报名咨询电话:010-82326699免费热线:4008105999咨询时间:全天24小时服务(周六、周日及节假日不休息)2光学经纬仪及脚架,花插1套Opticaltheodolite,horse&flowerbrace150m以上钢尺1把Steelrule(over50m)13m-5m钢尺2把Steelrule(3-5m)2线锤1只Threadhammer1模线若干Modulestringsome铁锤1把Hammer1定位界椿若干Orientationmarkersome电焊机1台Electricweldingmachine1水平靠尺(高精度)1把Levelingguidingrule(Highprecision)11.2施工人员:Workingstaff有经验的测量工程师1人Well-experiencedmeterageengineer1钢筋工1人Reinforcingsteelbarworker1电焊工1人Electricwelder1木工1人Carpenter1辅助工2人Assistant2建设工程教育网()报名咨询电话:010-82326699免费热线:4008105999咨询时间:全天24小时服务(周六、周日及节假日不休息)3§2·板样定位及水准点:ModelorientationandStandardLevelingPoint2.1板样定位:ModelOrientation:根据图纸要求,对施工现场进行放样,定位。在所有建筑物的角点,必须设立横向,纵向两个控制界柱,并采取适当的加固措施,避免控制界椿在施工过程中遭破坏,所有横向,纵向轴线均设立相对固定的定位椿。所有定位椿的顶标高尽量控制在+0·000上10-20cm,以便日后拉模线,拉尺丈量复核。定位界椿设立之后,应采取反方向闭合测量,修正成果,以减少平面误差Tolocatethepositionandloftingonthejobsiteaccordingtothedrawing.Bothtransverseandlengthwayscontrollingboundarycolumnshouldbeembeddedatthecornerofeverybuilding,thecorrespondingconsolidatingmeasuresalsoshouldbetakensoastopreventthecontrollingboundarycolumnfromdamagingduringtheerection.Thetopelevationoffixedlocationboundarymarkeronbothtransverseandlengthwaysaxisesshouldbecontrolledbetween10-20cmon+0.00,whichwouldbemoreconvenientforthere-measurementinthefuture.Aftertheembeddingofpositionfixedboundarymarker,oppositeclosingmeasureshouldbetakentoadjusttheworks,inordertoreducetheinaccuracyonplanelevel.2.2水准点:Levelingpoint水准点的设立同样相当重要,它直接影响到地脚螺栓顶部标高的控制。建议沿建筑物周边每40m左右设立一个临时水准点。同样,临时水准点设立后,亦须经过闭合测量。Consideringitsdirectinfluenceoncontrollingthetopelevationofanchorbolts,theestablishmentoflevelingpointisalsoaveryimportantprocedure.Wesuggestyousetatemporarylevelpointevery40maroundthebuilding.Sameastheaboveprocedure,closingmeasureis建设工程教育网()报名咨询电话:010-82326699免费热线:4008105999咨询时间:全天24小时服务(周六、周日及节假日不休息)4alsorequiredaftertheestablishment.§3地脚螺栓的埋置及准备工作:Preparationandembeddingofanchorbolts3.1地脚螺栓套板的加工:Theprocessofanchorboltscleading地脚螺栓的套板,其尺寸及套板上的开孔与日后上部结构中柱脚底板的尺寸及开孔相一致。套板应采用不小于20mm厚的木板,根据节点详图所规定的尺寸及开孔位置进行加工。开孔直径应比地脚螺栓直径大2mm为宜。同时,套板面须用醒目标志标出,纵横轴线穿过该组地脚螺栓的具体位置,以便日后复核。Thesizeoftheanchorboltcleadingandtheaperturethereinshouldbeidenticalwiththatofthebaseplateintheupsidestructure.Suchcleadingshouldadoptthewoodboardnolessthan20mmandbeprocessedaccordingtothesizeandaperturepositionstatedinthespecificgraphics.Itwouldbebetterifthediameterofapertureis2mmbiggerthanthatofanchorbolts.Atthesametime,thecleadingsurfaceshouldbelinedoutbydistinctsignwiththetransverseandlengthwaysaxisthroughthepositionofanchorboltsinthesamegroup,soastofacilitatethere-checkinthefuture.3.2地脚螺栓的埋置:Theembeddingofanchorbolts:基础钢筋开始施工时,地脚螺栓埋置工作也应同时开始,穿插进行。埋设地脚螺栓前,先应用模线放出相应的纵,横向轴线,同时用钢尺在基础钢筋上放出每组地脚螺栓的位置。埋置地脚螺栓时,先将地脚螺栓套板平放在基础钢筋上相应位置,用线锤测定校正纵,横轴线与套板上标出的纵,横向轴线标志,沿套板周边在钢筋上作出标记。将地脚螺栓的螺杆由下至上穿过套板,在螺杆上拧上相应的螺母,通过螺母的松紧,调节地脚螺栓的顶部标高,用水准仪测量控制螺栓顶标高,直到图纸要求相符合为止。在施工过程中,用水平尺检测套板及螺杆,尽量使套板面处于水平状态,螺杆处于垂直状态。建设工程教育网()报名咨询电话:010-82326699免费热线:4008105999咨询时间:全天24小时服务(周六、周日及节假日不休息)5套板及螺杆就位后,须用经纬仪进行复核。将经纬仪架立在需复核的地脚螺栓的轴线控制点上,目镜瞄准远端该轴线的另一控制点,确定目镜中十字丝中心,即为该轴线位置,然后复核位于该轴线上的每组地脚螺栓与轴线位置关系是否准确,并修正成果。注意,经纬仪复核必须纵,横两个方向进行,切忌只复核一个方向而忽略另一方向。Theworkingofreinforcingbarandembeddingofanchorboltsshouldbeginatthesametime.Beforetheembedding.bothaxisesshouldfirstbeconfirmed,thanusingmetalrulertomeasurethelocationofeachanchorboltsonthereinforcingbar.Whileembeddingplateshouldlevellyputonthecorrespondingplaceonreinforcingbar.Thenmarkedouttheaxisesbothoriginallymeasuredandthatontheplatebyusingthreadawl.thanpenetratetheplatefromundersurfacetouppersurface,andscrewonthecap.Atlast,adjustthetopelevationandmeasureatthesametimeuntilitreachestherequirementofpaper.Duringtheconstruction,levelingguidingrulershouldbeusedtomakesurethatwhetherthecleadingsarelevel.Andscrewsarevertical.Thanputthetheadoliteontheaxiescontrollingpointofanchorboltstoreportingtheaccuracy.Remember,thereproofingprocessshouldbeactualizedonbothorientation.3.3地脚螺栓的固定:Thefixupofanchorbolts:在上述工序完成并修正成果后,须对地脚螺栓作固定。具体固定方法如下:每组螺栓的各螺杆间用8钢筋焊接连接。螺杆下部能与基础钢筋连接的部分尽量采取电焊可靠连接,以确

1 / 7
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功