青海高速公路桥梁墩柱施工技术交底 8页

施工技术（安全）交底记录交底时间：年月日工程名称花石峡至久治公路工程合同段名称HD16标工程部位卡羊大桥墩柱施工工序名称墩柱施工技术（安全）交底内容：一、工程概况二、墩柱施工方法钢筋、模板、砼的施工要求和标准三、安全措施钢筋、模板、砼施工及现场机械使用的安全技术措施四、施工工艺流程祥见附件:桥梁墩柱施工技术交底交底部门接收部门交底人接受人项目经理技术负责人专职安全员constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.\n桥梁墩柱施工技术交底一、工程概况本桥位于果洛洲玛沁东倾沟乡丘陵地带，起讫里程为K135+378—K135+986，桥梁中心桩号为K135+682，桥梁全长607.2米。本桥设计有墩柱类型两种，桥台采用肋板、台盖梁式，分别为1.8m的圆柱和3m×3m的方柱式薄壁空心墩，，本桥墩1―4#，12―19#该型墩柱通过宽和高分别为1.4m和1.8m型系梁连接桩径2.0m的钻孔桩，墩柱采用全幅一排3根柱结构，柱顶用盖梁连接；3米×3米的方柱式薄壁空心墩，该型墩柱通过C6.25m×6.25m×3.0m型承台连接桩径1.5m钻孔桩，墩柱采用半幅独立式结构，墩柱顶盖梁连接。1.8米圆柱数量为36根，3m×3m的方柱式薄壁空心墩为14根。二、墩柱施工方法1、系梁与承台顶混凝土及预埋钢筋的处理系梁或承台施工完毕后，应及时将与墩柱连接部位的混凝土凿毛并冲洗干净，按照墩柱钢筋笼的结构尺寸将预埋钢筋调整顺直，钢筋上沾染的水泥浆应清洗干净。2、施工放样在保证连接部位清洗干净并凿毛的情况下，采用全站仪准确放出墩柱中心坐标。3、钢筋加工与安装施工方法（1）钢筋不应存在有害的缺陷，如裂纹及叠层。其尺寸、横截面和拉伸性能等应符合设计要求。（2）钢筋必须按图纸所示形状弯折。浇入于混凝土中的钢筋的露出部分，不能在浇筑混凝土现场弯折。（3）钢筋应按设计图纸所示位置准确地安装，采用现场绑扎或吊装拼接，并按设计要求将钢筋牢靠的固定好，使其在浇注过程中不致移位。（4） 用于保证钢筋正确就位的定位钢筋应焊接在主筋上。采用混凝土保护层垫块时，强度应与混凝土强度相同，不允许使用片石、碎石、金属块和木块作垫块。（5） 所有的钢筋交叉点宜采用直径1.2mm软熟铁丝绑扎或点焊。constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.\n（6）主筋采用搭接电弧焊，双面焊缝，搭接长度大于5d（d为钢筋直径），同一截面处钢筋接头不超过主筋根数的二分之一，严格控制钢筋接长质量；应避免在最大应力处设置接头，并尽可能使接头交替排列，接头间距相互错开的距离应不小于35d（d为钢筋直径），且不小于500mm。现场吊装墩柱钢筋笼与预埋钢筋采用搭接电弧焊，每处连接在搭接端头起焊，一处点焊，一处采用单面搭接焊，焊缝长度需满足10d（d为钢筋直径）。主筋连接处采用套丝连接的，连接的质量应能满足设计和规范要求的连接长度和强度要求，主筋焊接完毕后需将墩柱钢筋笼底部螺旋钢筋按设计图纸要求进行绑扎。（7）热轧钢筋采用电弧焊（帮条焊，搭接焊），钢筋焊接头应符合《钢筋焊接及验收规程》（JTJ18-96）的规定。当采用电弧焊焊接热轧钢筋时，焊缝长度，宽度，厚度应符合规范要求，且用于电弧焊的焊条应符合有关规定。4、钢筋加工与安装质量控制（1）外观要求①钢筋的级别、直径、根数和间距均应符合设计要求，绑扎或焊接的钢筋网和钢筋骨架不得变形、松脱和脱焊。②钢筋表面清洁有金属光泽，无锈蚀，无水泥浆裹覆并其他杂物污染。③钢筋表面骨架要有足够的钢筋支撑，以保证其施工强度。（2）实测项目加工钢筋的检查项目项次检查项目规定值或允许偏差检查方法1受力钢筋顺长度方向加工后的全长（mm）±10按受力钢筋总数30%抽查2弯起钢筋各部分尺寸（mm）±20抽查30%3箍筋、螺旋筋各部分尺寸（mm）±5每构件检查5～10个间距钢筋安装实测项目项次检查项目规定值或允许偏差检查方法和频率1受力钢筋间距（mm）两排以上排距±5尺量：每构件检查2个断面同排梁、板、拱肋±10基础、锚锭、墩台、柱±20灌注桩±20constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.\n2箍筋、横向水平钢筋、螺旋筋间距（mm）±10尺量：每构件检查5～10个间距3钢筋骨架尺寸（mm）长±10尺量：按骨架总数30%抽查宽、高或直径±54弯起钢筋位置（mm）±20尺量：每骨架抽查30%5保护层厚度（mm）柱、梁、拱肋±5尺量：每构件沿模板周边检查8处基础、锚锭、墩台±10板±35、模板工程：（1）模板施工前，先利用测量放样的纵横轴线定出其中心点，并且以中心点划出墩柱外轮廓线，或在墩柱钢筋笼的底部主筋之上焊接定位钢筋使其墩柱中心点到定位钢筋外围距离等于墩柱模板至中心线的距离。（2）模板安装位置确定以后，施工人员应及时搭建临时施工作业平台，以避免在后期的施工中施工作业人员及各种机具直接在模板顶施工作业，临时工作平台框架采用碗扣式脚手架，钢管采用Φ50式，模板顶周围脚手架可用竹胶板平铺宽度50cm的工作平台，并且用铁丝与脚手架连接牢固，侧面再行悬挂安全网，高度满足1.4m为宜。（3）为确保墩柱外观质量，保护层统一采用同一强度的十字接触块。桥梁墩柱模板采用一模到顶的定型钢模，模板使用前应进行多次打磨，确保光洁度，先进行试拼，确保模板拼缝严密、平整。全部处理完后，仔细检查，确保光滑发亮后，涂刷脱模剂，再用海绵均匀擦抹一遍，马上拼装模板。模板拼接时在接缝内粘贴双面胶条，凸出部分用小刀片削平，确保灌注砼时不会出现漏浆现象。拼装模板时，连接螺栓应将所有螺栓孔满上并且连接紧密。模板拼装完毕后可采用25T汽车吊配合施工人员吊装模板，模板周围及下部严禁非施工人员靠近，高空作业施工人员需佩带安全带安全帽，并且保证在安全工作平台内施工作业。（4）模板安装完毕后，模板周边用10Х10方木支撑顶牢固，然后四周用手拉葫芦及钢丝缆绳稳固，并调整模板中心及垂直度，调整后在模板上口前后两端用通长角钢∠50×50×5进行横向联接，保证墩柱不位移倾斜。四周顶紧，扎结实，然后用高标号砂浆将模板底口封闭，但留一至二处缺口，待砼浇注时再次进行冲洗，将水排出之后再封住缺口，浇注砼。constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.\n项目允许偏差（mm）模板标高柱±10墩台±10模板内部尺寸墩台±20轴线偏位柱8墩台10模板相邻两板表面高低差2模板表面平整5（5）模板安装的允许偏差（6）模板安装并调整垂直度满足设计要求后，技术人员需对墩柱模板顶抄平，确定混凝土浇筑高度。在确定混凝土高度时需设计墩顶留取2cm的躁凿毛位置。因本标段在盖梁施工过程中将采用Φ100的钢棒代替抱箍，所以在墩柱混凝土浇筑前预埋Φ125的PVC管以方便后续施工，PVC管底标高为从设计墩顶标高向下量取89.5cm。6、混凝土施工（1）原材料经自检合格及监理抽检合格后，方可用于工程施工中，水泥、砂、石料的数量要充足。（2）混凝土施工机械砼采用拌合楼集中拌制，砼罐车运至工地，汽车吊吊装混凝土料斗入模方法。混凝土施工前，机械均运行正常，且有适当数量的备用。（3）混凝土拌合砼拌合时间不少于2分钟，因拌合时间不足，易造成混凝土的不均匀，影响强度和质量。①校验计量器具，并在计量器具前标明施工配合比，严格按照批复的施工配合比进行施工。精确称量，确保配合比的准确实施。②严格控制混凝土的拌合用水，对加水继电器随时校核，确保水灰比正确，防止因水灰比控制不严而影响砼强度和砼外观质量。③每盘混凝土的拌合时间不少于2分钟，确保混凝土拌合的和易性和均匀性。constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.\n（4）混凝土的浇注：①在浇注前，调试好振动棒，安设好串筒，串筒距离地面2m高度为宜。②混凝土分层浇注，每层厚度30cm。先周边，后中间的顺序进行捣固。混凝土振捣时，每上一层砼振捣要伸入下一层5－10cm，振捣时严禁碰撞模板，应与其保持10－15cm的距离。同时禁止将振动棒置于钢筋上进行混凝土捣固的做法。混凝土振捣时以出浆而不再冒气泡时为准，不得出现漏振和过振现象，做到快插慢提，气泡放净，有序振捣，防止漏振，尽量减少水泡现象。混凝土浇注连续进行，不得间断。如因故必须间断，其间断时间应小于混凝土初凝时间。砼施工完毕后，与下道工序砼接合面应及时进行凿毛清洗工作。（5）混凝土养护混凝土浇注完并进行表面收光后，尽快进行覆盖养生。砼强度达到2.5Mpa方可拆除模板。采用洒水外覆塑料布进行保水养护的做法，一般养护7天。检查项目质量要求容许误差质量要求砼抗压强度（MPa）在合格标准内符合技术规范要求断面尺寸（mm）±20竖直度或斜度（mm）0.3%H,且不大于20顶面高程(mm)±10顶面要求平整一致轴线偏位(mm)10预埋件位置(mm)10大面积平整度(mm)5（6）砼墩柱施工偏差三、安全措施（1）建立安全管理体系，施工队设专职安全员一名，各班组长兼职安全员，安全管理层层承包，责任到人。结合施工组织设计编制安全措施，并在施工前由项目部专职安全工程师对全体施工人员进行安全教育，同时各岗位选派有经验的人员，定岗操作，保证安全生产。（2）进入现场必须遵守安全生产六大纪律，进入施工现场人员必须戴好安全帽。constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.\n（3）各种施工机械要保证完好率，不准带病运转，不准超负荷使用，机械设备的危险部位要有安全防护装置，并定期检修。定期对施工人员进行身体健康情况检查，对生活环境按时消毒，配全劳保用品。（4）所有用电设备的金属外壳，必须可靠的接到PE线上；固定电气设备应作防雨、防淹措施。要求设备停用半小时以上必须拉闸断电上锁。经常检查电源线，输电总开关必须安装漏电保护器，尽量减少电源线的接头和破损处，如有接头和破损必须用电工胶布缠好，破损严重的电源线必须更换。电源闸刀不得裸露，必须上好保护盖。移动机械时，不能硬拉电线，更不允许在钢筋和其它锐利物上拖拉，防止割破、拉断电线造成触电伤亡事故。（5）施工队必须配备专职电工一名，所有施工及照明用电由电工接好并检查线路。（6）汽车吊在吊装钢筋笼和导管时，应小心、缓慢进行，在吊装时现场人员应远离起吊物，以防碰伤现场人员。（7）泥浆池四周用钢管进行围护，涂上红白相间的油漆，并立醒目的标志牌，禁止外人靠近。constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.\n四、施工工艺流程拆摸保水养生浇筑混凝土抄平模板顶标高确定混凝土浇筑高度报检监理工程师合格模板安装调整垂直度支垫保护层密封墩柱中心精确放样焊接定位钢筋并标记模板边界线搭接脚手架及安全工作平台钢筋制作并吊装焊接报检监理工程师合格墩柱与下部连接部位凿毛并清洗干净constructionoflifting...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,eachoperatorfined20Yuan.Gasbottlewithoutthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)nopermittoworkandthejobinaccordancewiththeprovisions,onthejobunitfined300yuan,theunitwillchargeafineof100Yuan.7.5.3accidentpenalties(1)injuriesfatalitiesdirectlypunished1~2million.Directresponsibilityfortheaccidentandhavethecorrespondingresponsibilityofleadership,suchasconcerningadministrativesanctions,shouldbebroughttothecompanyortherelevantDepartment.(2)personalinjuryaccidentoccurred,thedirectpunishment0.5-10,000yuan,responsibleforthedirectresponsibilityfortheaccidentandtheresponsibilityofleadership,suchasconcerningadministrativesanctionsshouldbedealtwithbythepersonnelDepartmentofthecompany.(3)personalinjuryaccidentoccurs,thedirectpunishment500-1000,whoisdirectlyresponsiblefortheaccidentresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)toconcealtheaccident,reportedwithoutunduedelayorfalse,toinformtheadministrativeleadershipofthecriticism,resultinginseriousconsequences,thepursuitofleadership,alongwith500-1000punishment.