钢结构安装方案.docx

1、钢结构安装方案 目录 Contents1. 定义 DEFINITION2. 工程概况 PROJET GENERAL3. 编制依据和要求 REFERENCE DOCUMENT4. 施工程序 REFERENCE DOCUMENT5. 安装方法 ERECTION METHOD1) 准备工作PREPARATION OF WORK2) 基础及材料验收 FOUNDATION AND MATERIAL ACCEPTANCE3) 钢结构的安装 STEEL STRUCYURE ERECTION4) 钢结构找正 ALIGNMENT OF STEEL STRUCTURE5) 螺栓紧固 TITHING OF BOLT

2、S6) 非收缩性灌浆 NON-SJHINK GROUTING7) 钢结构焊接 STEEL STRUCTUREWELDING8) 补漆 TOUCH-UP PAINTING9) 质量保证措施 QUALITY ASSURANCE MEASURES6 吊装方法 LIFTING STUDY7. 工具和重型设备Tools & Heavy equipment10. 安全风险分析 RISK ASSESSMENT钢结构安装方案METHOD STATEMENT FOR STEEL STRUCTURE ERECTION1 定义 DEFINITION 此方案仅限于B10、B20区域钢结构安装，包括管廊、压缩机厂房、设

3、备结构、设备平台和复杂的钢结构。 This method statement is applicable for all steel structure erection within area B10 and B20, include main pipe rack、compressor shelter、equipment structure、equipment platform and miscellaneous steel structure.2 工程概况PROJECT GENERAL1 钢结构总重约2300吨 The total weights of steel structure ar

4、e about 2,300 tons2结构的连接型式采用高强螺栓 The steel structure be assembled by high stress bolt.3 钢结构的预制由JGC委托加工成半成品构件，分类编号并试拼装后，运往安装现场交付安装 .JGC entrusted that Fabrication of steel structure should be semi finished products , transport to installation site for installation after classified ,numbered and trial

5、 assemble.3 编制依据和要求Preparation Reference & Instruction1 钢结构图纸说明 Structural Steel Construction Specification2 钢结构工程施工及验收规范（GB50205-2001）Code for acceptance of construction quality of steel structures3 钢结构高强度螺栓连接的设计施工及验收规范（JGJ-82）Specification of design, construction and acceptance for high-strength b

6、olt connection of steel structure4 Construction specification for steel structure-site erection S-000-1643-00015 Scope of test inspection and report steel structure erectionS-000-1540-03016 Ladder inspection procedure S-000-1654-00197 Specification for Painting S-000-13A0-00014 施工程序REFERENCE DOCUMEN

7、T基础验收成品、半成品构件及材料验收管廊架及设备构架分片分段组装吊装找正螺栓紧固灌浆检验梯子/平台/栏杆安装补漆验收交工 Foundation Acceptance Semi-products / Fabricated Parts and Material Acceptance Pipe-rack and Equipment Frame Separated Assembling according to Axes and AreaLifting Alignment Tightening of boltsGrouting InspectionLadder/Platform/Handrail In

8、stallation Touch up paint Handing-over and Acceptance5. 安装方法 ERECTION METHOD1） 准备工作PREPARATION OF WORK a）工人需持相关证件The workers must get the relevant qualification b) 现场传递及施工设备证明Transfer inspection and certified construction equipment to the fieldc） 施工工具准备The construction tools are preparedd) 脚手架搭建（详见附

9、图）Erection scaffold（refer to erection scaffold drawing）2） 基础及材料验收Foundation and material Acceptance1） The location axes of foundation，equipment structure axes and elevation and standard of anchor bolt shall comply with approved construction drawings建筑物的定位轴线、基础轴线和标高、地脚螺栓的规格及其紧固应符合设计要求。2） The allowabl

10、e deviation of support base for steel structure column shall be as per table 1钢结构塔基允许偏差见表Item项目Allowable deviation（mm）允许偏差Support face支撑面Elevation标高3.0Levelness水平度L/1000Anchor bolt 地脚螺栓Center deviation螺栓中心偏移5.03） The allowable deviation of box-out concrete foundation shall accord with table2：杯口混凝土基础

11、允许偏差参表：Item项目Allowable deviation（mm）允许偏差Depth深度5.0Verticality垂直度H/100，not exceed10.0Position位置10.04） Anchorthread bolt shall free from defect，allowable deviation as table 3：地脚螺栓无缺损，参表Item项目Allowable deviation（mm）允许偏差Extruding length露出长度30/0.0Screw length螺丝长度30/0.0Center deviation中心偏差2.05）钢结构必须保持清洁Th

12、e steel structure shall be clean6) 现场的钢结构件进入后，在组装前，按照钢结构布置图和工厂制造图的编号对应预制件上的标记一一查找，放在对应的安装位置，检查部门会同有关技术人员按照图纸和规范的要求对其进行全面检查，若发现不合格品，必须处理合格后方可安装就位Quality control department and technique engineers will inspect all received fabricated parts before and after installation in according to related drawings

13、 and specifications. If there are unqualified parts, it must be repaired to meet the requirement of standards.3) 钢结构的安装Steel structure erectiona) 根据图纸将底座吊装就位，按图纸和规范要求进行找正。钢架安装采用片状框架地面拼装，组合吊装和单构件安装相结合的方法，后安装次梁、联系梁、支撑，并根据设备吊装的要求留设个别活动梁，待设备安装后再紧固。已安装的结构应具有可靠的稳定性和足够的空间钢度。Base should be lifted and put in

14、 place according to the drawing. The alignment should be done according to the drawing and specification. During installing the steel frame, flat frame would be assembled on the ground, combining the method of lifting with single piece installing, then install auxiliary beam, tie beam, support, leav

15、ing moveable beam according to the requirement of equipment lifting, and tighten it after the equipment installing. The installed structure should have reasonable stability and keep enough clearance for the steel strength.b) 根据各片框架的重量不同可选择不同的吊装机索具。可采用单机吊装，也可利用两台吊车配合吊装。在安装时，可加临固定支撑固定。Suitable lifting

16、 crane sling and other tools could be chosen according to the vicious weight of each frame. Single crane can be applied; two cranes also could operate together to lift. Temporary bracing & staying must be applied after allocation of portal frame.c） 为防止构件组合体在吊装翻转时产生变形，应采取加固措施Taking reinforced method

17、to avoid distortion when lifted parts are turned aroundd） 钢结构构架的安装，可采用分段分片的安装方法。每一片框架分别在地面平台上组装好，先吊装后组装。It could adapt the method of pieces Installation for the steel structure and each piece should assembled on the ground platform first (erection before installation) e） 结构架按柱的连接点可分为几层，第一层柱的对应两片框架先吊

18、装就位，初步校正并固定后，再安装第一层内的其它构件及平台、直梯等，然后再按第一层的安装程序安装上一层。安装上一层时，应考虑下一层安装的偏差 Structure frame will be divided to several tiers according to connection points. The two corresponding pieces frame of first column should be lifted to location, after initial adjusting and fixing, install other parts, platform an

19、d ladder inside 1st tier. The next tier will follow the same procedure as 1st tier. Portable beam will be set up for convenient lifting of equipment and re-fixed after equipment installation. The 1st tier deviation should be considered when installing upper tiers.4) 钢结构找正Alignment of steel structure

20、a) 安装找正应借助于磁力线坠、水平尺等工具，确保安装各部位几何尺寸、垂直度、水平度等在允许偏差范围内，具体安装允差详见副录1 Magnetic plummet, level measuring tools and other measuring tools will be applied during installation to ensure all data are within allowance, refer to the attachment-1 5) 螺栓紧固Bolts tightening 钢结构高强螺栓的紧固详见“钢结构高强螺栓施工方案”Tightening high st

21、rength bolt of steel structure refer to the method statement of high strength bolts of steel structure 6) 非收缩性灌浆Non-shrink grouting a找正完，对高强螺栓紧固后进行灌浆工作并且一次完成。The grouting is done at one time after qualified alignment and fasten of the high strength bolt b灌浆前，应对垫铁组点焊固定；基础表面用水冲洗干净，保持湿润。灌浆时应清除表面积水，按照灌浆

22、材料的供方说明书进行灌浆和养护。Before the grouting, apply the units installed with shim sets that shall be spot-welded. Clean foundation surface with water and keep wet during grouting, remove the surface accumulated water, and pound carefully to make concrete to fill tightly in each parts. Pay attention to curing

23、 after grouting.7) 钢结构焊接Steel structure welding a焊接材料与母材的匹配应符合设计要求及国家现行行业标准建筑钢结构焊接技术规范的规定，并在使用前应按照产品说明书及焊接工艺文件的规定进行烘焙和存放 In according to the design requirement and the national stander the welding technical specification of construction steel structure JGJ81, welding material should match to the bas

24、e material. Compare with the manufactures instruction and welding process document to bake and store the material before use.b 焊接工作人员必须经考试合格并取得合格证书。Welding workers must have the qualified certificate of China.c 焊接工程师应对钢结构母材、焊接材料等进行焊接工艺评定，并根据评定报告确定焊接工艺。焊工应严格按照焊接工艺作业The welding engineer should impleme

25、nt the welding procedure qualification for the structural base material， and confirm the welding procedure by the report。Welder must follow the welding procedure to work strictly. d T形接头、十字接头、角接接头等要求溶透的对接和角对接组合焊缝，其焊角尺寸不应小于t/4。焊角尺寸的允许偏差为04mmThe dimension of the weld angle for which fully-melted BW jo

26、int, and angle BW joint as the T-joint, cross joint, corner joint should be less than t/4.The tolerance of the weld angle should be within 04mm.e 焊接时应保证焊接环境具有良好的条件，发现下列任何一种情况又无有效防护设施时，不得施焊 Ensure good condition during welding. Welding should be not allowed to perform under any one of the following c

27、onditions and also without protection facilities ：大风：风速大于或等于8m/s ;Heavy wind: Wind velocity is more than or equal to 8m/s ；雨雪：雨后或下雨；After rain or raining days;湿度：相对湿度大于90；Humidity: Relative humidity is more than 90%;f 焊接前对坡口组装的质量进行检查,如超过允许误差,应返修后再进行焊接.焊前应清理坡口中的水份、油污和锈等。The quality of groove assembli

28、ng should be checked before welding. If allowance error exceeds, it should be retreated and then welded again. Humidity, greasy dirt and rust in the groove should be removed before welding.严禁在母材表面引弧，多层焊的层间接头应错开。Arc ignition on the surface of the bus bar should be prohibited; the interlayer joint of

29、multi-layer should be staggered.8). 补漆Touch-Up painting钢结构补漆详见“钢结构补漆施工方案”Tightening high strength bolt of steel structure refer to the method statement of touch-up painting of steel structure 9) 质量保证措施Quality Assurance a) 钢结构制作和安装所用的钢材、焊材、连接材料、防腐涂料等，应具有出厂质量证明书，并应符合国家现行有关标准的规定和设计文件的要求。The material (s

30、teel, welding material, connection material, painting material) for the steel structure produce & installation should have the qualified certificate and in accordance with the national standard and the design document.b) 构件要在施工环境温度高于-12时进行矫正。矫正后，表面局部平面度：当t14，允许偏差1.5/1000mm；当t14，允许偏差1/1000mm，其它尺寸允许偏差

31、应符合规范中的规定。When the temperature -12 it should be corrected .After that the partly level of surface is: if t14, tolerance1.5/1000mm；If t14，tolerance1/1000mm，and other tolerance should in accordance with the specification. c) 碳素结构钢和低合金钢在加热矫正时，加热温度应根据钢材性能选定，但不得超过900。低合金结构钢在加热矫正后应缓慢冷却。 When the carbon steel & low alloy steel are under heat correct, the temperature should refer to the steels character and can not excess 900。After that the low alloy steel should be coded slowly. d) 螺栓孔必须清洁，螺栓孔间距、最小边缘距离以及螺栓孔大小应符合规范JGJ 82中的规定。The bolt hole sh