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1、道桥论文两篇格式标准+公路工程施工放样摘要:公路丄程施工放样的主要是利用测量技术将设计图纸上的工程构造物的平而位置和高程在实地标定出来,作为施工的依据。在施工过程中,检测工程构造物的儿何尺寸,以实现从设计图纸到工程实物的质和量的转变。公路工程施工放样的依据是《公路工程技术标准》,各种构造物的施工技术规范、规程、测量规范等以及工程设计图纸。测最放样工作应遵循从整体到局部的原则,先进行控制测量,再进行细部放样测量。通过控制测量,建立起平面控制点和高程控制点与工程构造物特征点Z间的平而位置和高程的几何联系。以平面控制点的处标和高程控制点的高程为依据,利用传统测量仪器进行距离、
2、髙程和角度的测量放样或者利用全站仪和GPS进行三维处标放样來确定工程构造物特征点在实地上的空问位査。在放样过程中,工程设计图纸是图解控制点和工程构造物特征点之间几何关系的依据;现行的施工技术规范、规程,以及测量规范是核查放样结果精度的依据。只冇利川精度符合标准的几何数据,才能精确地测定工程构造物特征点的准确位置,以指导施工。关键词:公路工程;施工放样;方法1PickThehighwayengineeringconstructionloftingwasmainlyusedformeasuringtechnologywilldesigndrawingofconstmctio
3、nsplanepositionandelevationinfieldcalibrationout,asthebasisofconstruction.Duringconstruction,detectionconstructionsgeometrysize,inordertorealizetheprojectfromthedesigndrawingandphysicalquantityandqualityoftransformation.Thehighwayengineeringconstructionloftingarcbasedonthehighwayengineer
4、ingtechnicalstandards"9allsortsofslopeconstructiontechnologystandard,procedure,measurementspecificationsaswellasengineeringdrawings.Measuringandsetting-outworkshouldfollowtheprincipleoffromthewholetothelocalcontrolmeasure,first,andthentodetailloftingmeasurement.Throughthecontrolmeas
5、ure,toestablishcontrolandelevationcontrolandplanarconstmctionsfeaturepointsbetweentheplanepositionandelevationofgeometricalcontact.Onplanarcoordinatesystemandelevationcontrolpointsofcontrolpointsofelevationasthebasis,usingtraditionalmeasurementinstrument,distance,elevationandAnglemeasure
6、mentlofting,orusingelectronictachometerandGPSin3dcoordinateloftingtodeterminetheconstructionsofcharacteristicpointsonfieldonspace・Inloftingprocess,engineeringdesigndrawingsaregraphicalcontrolpointsandconstructionsfeaturepointbetweengeometricalrelationofbasis,Thecurrentconstructiontechnol
7、ogystandard,procedures,andmeasurementspecificationsareinspectorsloftingprecisionresultbasedonitOnlyuseprecisionstandardgeometricdatatomeasureexactlyconstructionsofthefeaturepointaccuratelypositiontoguidetheconstruction.Keywords:highwayengineering,Constructionlofting,metho