井字架专项施工方案

relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题，中国作为屹立在世界东方的大国，要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”，再到G20峰会，都体现出中国一个负责任的大国形象。井式垂直运输架专项施工方案第一节编制依据《建筑施工手册》第四版中国建筑工业出版社、《建筑施工脚手架实用手册（含垂直运输设施）》中国建筑工业出版社；《建筑施工扣件式钢管脚手架安全技术规范》JGJ130-2001；《建筑施工安全检查标准》JGJ59-99中国建筑工业出版社；本工程施工图纸、本省有关文件。第二节工程概况工程位于****,该工程为********厂房龙门吊工程。第三节方案选择及材质要求井式垂直运输架，通称井字架，是施工中最常用、也是最为简便的垂直运输设备。他的稳定性好、运输量大。井字架构件包括：架料（横杆、立杆、扣件等）、滑轮（天轮、地轮、天轮梁及吊绳等）、吊盘（吊盘、缆风绳及零星部件等）。1、井架材料：本工程的井字架支撑系统采用的是普通脚手架管。其外径48mm，壁厚3.50mm，钢材强度等级Q235-A，钢管表面应平直光滑，不应有裂纹、分层、压痕、划道和硬弯，新用的钢管要有出厂合格证。施工前必须将入场钢管取样，送有相关国家资质的试验单位，进行钢管抗弯、抗拉等力学试验，试验结果满足设计要求后，方可在施工中使用。本工程钢管的搭设使用可锻铸造扣件，应符合建设部《钢管脚手扣件标准》JGJ22-85的要求，由有扣件生产许可证的生产厂家提供，不得有裂纹、气孔、缩松、砂眼等锻造缺陷，扣件的规格应与钢管相匹配，贴和面应干整，活动部位relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题，中国作为屹立在世界东方的大国，要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”，再到G20峰会，都体现出中国一个负责任的大国形象。灵活，夹紧钢管时开口处最小距离不小于5mm。钢管螺栓拧紧力矩达70N.m时不得破坏。如使用旧扣件时，扣件必须取样送有相关国家资质的试验单位，进行扣件抗滑力等试验，试验结果满足设计要求后方可在施工中使用。安全网采用密目式安全网，网目应满足2000目／100cm2，做耐贯穿试验不穿透，1.6×1.8m的单张网重量在3kg以上，颜色应满足环境效果要求，选用绿色。要求阻燃，使用的安全网必须有产品生产许可证和质量合格证，连墙件采用钢管，其材质应符合现行国家标准《碳素钢结构》（GB/T700）中Q235A钢的要求2、滑轮及吊盘：滑轮及吊盘为整套配件，其材质均为Q235-A,吊盘出场前必须进行实验，吊盘有效面积不小于0.25m2/人，且必须有防滑措施，吊盘内最小站立宽度≥0.4m。吊盘、滑轮及吊绳主要参数见下图：机构名称项目名称单位规格性能额定荷载KN3.0吊自重Kg450盘升降速度m/min5面积m*m3.6*0.7操作方式手动载荷KN4.0升电机：功率KW0.8降电压V380机额定转速r/min1400构频率HZ50温度℃40配重Kg470滑轮及吊绳钢丝规格Mm8.25钢丝拉断力KN44.60第五节搭设流程及要求搭设的工艺流程为：场地平整、夯实→基础承载力实验、材料配备→定位、底座→立杆→横地杆→小横杆→大横杆→剪刀撑→连墙件→升降机构安装→吊盘安装、绳索→试车→扎防护栏杆→扎安全网。定距定位。根据构造要求用尺量出内、外立杆离墙距离，并做好标记；用钢卷尺拉直，分出立杆位置，并用小竹片点出立杆标记；垫板、底座应准确地放在定位线上，垫板必须铺放平整，不得悬空。relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)wi