沥青面层施工方案

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为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照执行:andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4)forspringhangers(includedsimplespring,hangersandconstantsupporthangers)itshouldalsoberecognizedassettingandlockingofloads.5)checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5)aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust(torque)limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness(mm)2-34-67-10weldformnoslopemouthweldstrengtheningheighth(mm)1-1.51.5-2weldwidthb(mm)5-67-6hasslopemouthweldstrengtheningheighth(mm)1.5-22weldwidthb(mm)coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness(mm)2--33--45--6weldformweldstrengtheningheighth(mm)1-1.51.5-22-2.5widthb(mm)一、基层局部补强工程进场后用三轮压路机进行碾压,对有问题的局部区域进行铺设20cm二灰结石进行补强处理。经业主、监理认可后满足标高后直接摊铺二灰结石,二灰碎石在拌和场集中拌和后运至现场,采用人工配合挖掘机或装载机等摊铺,摊铺后以压路机碾压,一次碾压成型。碾压成型后第二天起开始养生,养生期为7天。在此期间,必须加强保护措施,严禁行车。养生期满、经检测合格后,应清除二灰表面浮尘,方可进入下道工序。二灰结石7天无侧限浸水抗压强度≥0.8Mpa;压实度≥98%。二、沥青下封层沥青下封层施工前,要对路面进行除尘、排水;并在施工前,将路面上的路牙沿进行覆盖,以免喷洒乳化沥青时造成污染。1、路面除尘:二灰结石施工后,在养生凝固过程中,表面灰浆由于水分的散发快于凝固时的化学反应,最终游离出来,在二灰基础面层上会形成一层细细的灰尘。为了保证沥青面层与二灰基层能有机地粘结,必须将这些沥青粉末和细微颗粒清除干净。除尘的方法,根据以往的施工经验,我们将采取先干扫鼓风机除尘的步骤进行除尘。⑴在进行干扫时,要注意不得扬尘过大,清扫出的灰堆及时用小推车装走,集中清运;干扫阶段,每天还应根据气候情况,安排洒水车进行洒水降尘。⑵用手提鼓风机进行最后一次除尘。鼓风机除尘应仔细进行,确保路面上灰尘已清除干净。⑶沥青施工前,要对施工范围内所有窨井框盖、路沿的边缘处进行检查,如有杂物残留粘附在框盖、路沿上,应立即清除。2、路面排水:沥青摊铺前,很有可能会遇到阴雨天气,因此必须注意路面排水工作。下雨后要立即安排工人进行路面积水的清扫,并排入附近的路面排水设施内,以尽早晾干路面,为沥青摊铺创造条件。3、下封层施工:为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照执行:andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4)forspringhangers(includedsimplespring,hangersandconstantsupporthangers)itshouldalsoberecognizedassettingandlockingofloads.5)checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5)aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust(torque)limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness(mm)2-34-67-10weldformnoslopemouthweldstrengtheningheighth(mm)1-1.51.5-2weldwidthb(mm)5-67-6hasslopemouthweldstrengtheningheighth(mm)1.5-22weldwidthb(mm)coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness(mm)2--33--45--6weldformweldstrengtheningheighth(mm)1-1.51.5-22-2.5widthb(mm)2⑴沥青洒布前应先进行弯沉测试密实度,测试数据达设计要求后方可洒布。⑵应采用沥青洒布车喷洒沥青,洒布时应保持稳定的速度和喷洒量,洒布均匀。洒布汽车无法作业的路段或部位,以及漏洒的部位均应用手提式喷洒器进行人工喷洒或补洒;有油料积聚时应立即刮除。⑶乳化沥青洒布温度不应超过60℃,洒布速度应与集料洒布能力相协调,在破乳之前必须完成集料洒布。因此,在浇洒沥青后(不必等全段洒完)应立即洒布集料,及时扫匀,要达到全面覆盖一层,厚度一致、集料不重叠,也不露出沥青的要求。当有局部缺料或积料时,应立即找补或扫除。⑷洒布一段集料后(不必等全段铺完)立即用8T钢筒双轮压路机碾压,为避免过分压碎石料,宜碾压3-4遍。碾压速度开始不宜超过2km/h,以后可适当增加。边角处可用小型手扶压路机碾压。⑸碾压成型后应检查,若有泛油现象,应在泛油部位补洒嵌料并扫匀。过多的浮动集料应扫出路外。⑹在乳化沥青破乳后水分蒸发并基本成型后方可进入下道工序。三、沥青面层的施工本工程沥青结构层为4cm细粒式AC-13-Ⅰ+5cm中粒式AC-16-Ⅰ+6cm粗粒式AC-20-Ⅱ。施工时应逐层进行,待下面层完全施工结束后,再施工上面层;同时,对道路上各附属物要采取相应的保护措施。1、沥青面层的施工应在沥青封层施工结束后进行。采用摊铺机进行机械摊铺。2、测定基准线:摊铺机摊铺沥青之前,应测定基准线,使摊铺机通过传感托杆沿准绳行驶,以控制摊铺。⑴钢桩定位:钢桩距摊铺机熨平板端17—60cm,最大不能超过70cm。钢桩钉在路牙外10—20cm,桩间距离为7.5—10m,每桩均测高程。⑵测设高程:在设计纵断的标高上加一个常数,其值约比设计高程加40—50cm,比路牙高20cm为宜。⑶钉钢桩:各桩之间保持直线,牢固地钉入之后套管。调整托杆方向,使其指向路边方向,垂直于路中心线,将高程测在托杆上,合格后拧紧顶丝。在起点和终点桩外5m为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照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