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1、目 录 Content 1.General概述62.Scope 范围63.References 参考文献73.1.Drawing 图纸73.2.Specifications 规范114.Construction preparation 施工准备114.1.Personnel人员114.2.Construction materials施工主要材料114.3.Construction equipment and tools施工机具115.Construction methodology施工方法145.1.Construction sequence 施工顺序145.2.Survey control
2、测量控制155.3.Installation of embedded parts 预埋件安装175.4.Rebar fabrication and fixing 钢筋制作及安装215.5.Pre-stressing duct erection 预应力管道安装255.6.Formwork erection 模板支设255.7.STRIKING OF FORMWORK 拆模375.8.Horizontal construction joints treatment水平施工缝的处理385.9.Concrete work 混凝土浇注工作395.10.Temporary Construction Ope
3、ning 临时施工洞口416.Contingency Plans 应急方案427.Controls 控制428.Access 通道439.TRAINING 培训4410.Safety plan for wall construction墙体施工安全方案4510.1.Physical barrier to be installed安装硬围护4510.2.Climbing of Doka formwork 多卡模板爬升4510.3.Fall protection 防坠落保护4510.4.Access and emergency access 通道和紧急通道4610.5.Electrical saf
4、ety measure 用电安全措施4610.6.Bad weather plan 坏天气计划4611.Appendix 附件471. General概述This method statement is established to define construction method for the concrete wall of FJLNG phrase 1 Additional 3# and 4# Tanks project. 此方案适用于福建LNG一期新增3#和4#储罐工程混凝土墙体施工方案。2. Scope 范围Variations of sequence or method ma
5、y evolve as the work progresses, which will maximize efficiency and use of available equipment and resources. A revised Method statement will be issued for variations in work practice. 施工顺序或方法会随工程进展而改动，以便最大化的提高资源使用效率。The tank wall is circular on plan, tank height of 50054mm, 1000mm thick tapering do
6、wn to 550mm thick at a height of 6750mm. The inner radius of wall is 41000mm, the outer radius is 41550mm, and the thickness of standard wall is 550mm. The concrete C50 will be used for the wall, reinforced with high yield steel reinforcement on the faces of the wall and cryogenic reinforcement just
7、 be used on the inner face of lift 2. 罐体墙体为圆形, 罐高50054mm, 在高度6750mm范围内，罐厚从1000mm渐变到550mm. 墙体内径为41000mm,外径为41550mm,标准墙体厚度为550mm。墙体使用C50混凝土，墙体钢筋高屈服钢筋，第二层墙体内侧使用低温钢筋。Post Tensioning is applied to horizontal and vertical pre-stressing ducts built into the walls. 预应力适用于墙体的水平和竖直预应力管道。The description of ten
8、don prestressing and duct grouting will be addressed in separated method statement. 预应力和孔道灌浆的描述参见单独的施工方案。During construction of the wall, welding joints and deformation of inserts control shall be performed by the mechanical subcontractor in accordance with the relevant specification, other work sha
9、ll be carried out by civil contractor. The mechanical subcontractor shall use the access and platform set by civil subcontractor for welding of inserts. 在罐筒体施工过程中，预埋件焊接连接和变形控制措施工作由机械分包商按照相关规范执行，其余相关工作均由土建分包商完成。机械分包商进入筒体执行预埋件焊接时，可利用土建分包商设置的通道和操作平台。Construction will be 11 lifts of the following height
10、s: 施工每层高度：Lift NoHeight (mm)Concrete Dosage(m)1337579023375621338005874380058753800587638005877380058783800587938005871037755841111-1227553411-211004373. References 参考文献3.1. Drawing 图纸General Arrangement 总体安排 DD-DWG-TS-ST-025101Tank TS-T-02-03 Orientation 3#罐定位图DD-DWG-TS-ST-025102-01Tank TS-T-02-04
11、Orientation 4#罐定位图DD-DWG-TS-ST-025102-02Outer Paste on Liner 衬里的外部粘贴材料DD-DWG-TS-ST-025122Outer Liner Embed Details 外罐衬里预埋件详图 DD-DWG-TS-ST-025123-01Outer Liner Embed Details at TCO 临时洞口外罐衬里预埋件详图 DD-DWG-TS-ST-025123-02Outer Liner Embed Details 外罐衬里预埋件详图 DD-DWG-TS-ST-025123-033 Outer Bottom Insulation
12、Purge N13 3外罐底隔热层排气管N13DD-DWG-TS-ST-025192Outer Liner Embed Details 外罐预埋件详图DD-DWG-TS-ST-0251392 Dia Pres. Equalization - N14A/B & N20A/B 2稳压管N14A/B & N20A/BDD-DWG-TS-ST-025194Temporary Outer Line Rain Gutter 临时外排水管DD-DWG-TS-ST-02ER5Compression Bar Anchor抗压钢筋锚固件DD-DWG-TS-ST-025158Embedment Plates for
13、 Escape Ladder逃生梯预埋件DD-DWG-TS-ST-025270Embedment Plates for Escape Ladder逃生梯预埋件DD-DWG-TS-ST-025271Embedment Plates for Main Stairway 主要通道预埋件DD-DWG-TS-ST-025272Embedment Plates for Main Stairway 主要通道预埋件DD-DWG-TS-ST-025273Embedment Plates for Main Pipe Rack 主管支架预埋件DD-DWG-TS-ST-025274-01Embedment Plate
14、s for Main Pipe Rack 主管支架预埋件DD-DWG-TS-ST-025274-02Embedment Plates for Firewater Piping 消防管道预埋板DD-DWG-TS-ST-025275Embed Plates for Circumferential Handrail 环形栏杆预埋件图纸 DD-DWG-TS-ST-025277Embed plates for roof walkway 穹顶走道预埋件 DD-DWG-TS-ST-025280Roof embed dimensions 穹顶预埋件尺寸 DD-DWG-TS-ST-025284Roof embe
15、d dimensions 穹顶预埋件尺寸 DD-DWG-TS-ST-025285Circumferential handrail 环形栏杆 DD-DWG-TS-ST-025321Concrete Tank Elevation 混凝土罐体立面图DD-DWG-TS-ST-025400Reinforcing Steel Bend Details 钢筋弯曲详图 DD-DWG-TS-ST-025411Concrete Wall Reinforcement 混凝土墙体钢筋DD-DWG-TS-ST-025415Starter Bar Arrangement Buttress 扶壁柱处插筋布置图DD-DWG-
16、TS-ST-025416Concrete Wall Reinforcement Arrangement Buttress扶壁柱混凝土墙体钢筋布置图DD-DWG-TS-ST-025417Concrete Wall Pre-stress Details 混凝土墙体预应力详图DD-DWG-TS-ST-025418Temporary Construction Opening (Concrete Wall) 临时施工洞口(混凝土墙体)DD-DWG-TS-ST-025419Concrete roof reinforcement 混凝土穹顶钢筋DD-DWG-TS-ST-025420General note总
17、说明 DD-DWG-TS-ST-0253000Anchorages details and wall typical section锚具详图和墙体截面图 DD-DWG-TS-ST-0253001Wall Plan and Sections墙体平面和截面图 DD-DWG-TS-ST-0253002Horizontal Prestress Layout(sht 1)水平预应力分布图（1） DD-DWG-TS-ST-0253003Horizontal Prestress Layout(sht 2)水平预应力分布图（2） DD-DWG-TS-ST-0253004Setting-out for hori
18、zontal prestress ducts水平预应力管定位 DD-DWG-TS-ST-0253005Horizontal prestress layout at wall buttress扶壁柱水平预应力分布图DD-DWG-TS-ST-0253006Vertical prestress layout(U-shaped ducts) 竖向预应力分布(U形管) DD-DWG-TS-ST-0253007Vertical prestress layout(U-shaped ducts) 竖向预应力分布(U形管) DD-DWG-TS-ST-0253008Vertical prestress typic
19、al setting-out of steel pipe竖向预应力钢管定位DD-DWG-TS-ST-0253009Setting-out plan of steel pipes for vertical prestress ducts(sht 1) 竖向预应力管钢管定位平面图（1） DD-DWG-TS-ST-0253010Setting-out plan of steel pipes for vertical prestress ducts(sht 2) 竖向预应力管钢管定位平面图（2） DD-DWG-TS-ST-0253011Setting-out plan of steel pipes f
20、or vertical prestress ducts(sht 3) 竖向预应力管钢管定位平面图（3） DD-DWG-TS-ST-0253012Setting-out plan of steel pipes for vertical prestress ducts(sht 4) 竖向预应力管钢管定位平面图（4） DD-DWG-TS-ST-0253013Setting-out for vertical prestress duct竖向预应力管定位 DD-DWG-TS-ST-0253014Vertical prestress-Typical steel pipe details & at butt
21、ress setting-out竖向预应力-钢管详图及扶壁柱处的定位 DD-DWG-TS-ST-0253015Vertical prestress steel pipe at opening-Detals临时洞口的竖向预应力钢管详图DD-DWG-TS-ST-0253016Connection detail of prestress ducts at opening临时洞口的预应力管连接详图DD-DWG-TS-ST-0253017Tank wall pre-stressing sequence墙体预应力张拉顺序DD-DWG-TS-ST-02530183.2. Specifications 规范P
22、roject Specification for Cast-in-Place Concrete Construction for Cryogenic Storage Tank低温储罐现浇混凝土规格书DD-SPC-TS-ST-02504 Project Specification for Prestress Materials and Installation预应力材料及安装规范DD-SPC-TS-ST-02505 4. Construction preparation 施工准备 4.1. Personnel人员Relevant staff and crews are all through m
23、obilization training and technique training. Special workers are all with special work certificates. The future mobilized personnel also will be trained. 相关管理人员和施工人员已经经过进场培训，特种操作人员持有相应的特种操作证书，相关施工人员和管理人员已经经过相应的技能培训，后续进场人员会按照既定的培训计划进行进场培训和技能培训。4.2. Construction materials施工主要材料The recently necessary c
24、onstructions materials have already arrive at jobsite and qualified after test and ready for usage. The future mobilized materials will also be tested and accepted as per specifications and approved for usage after being tested qualified. 目前所需施工主要材料已经报批进场，并检验合格，正式施工时可以投入使用。后续材料会按照规范要求进行材料进场验收，合格后方可投
25、入使用。4.3. Construction equipment and tools施工机具A part of wall construction equipment and tools have already get to jobsite being installed, accepted and used. The future equipment and tools also will be tested for acceptance before being used. The equipment and tools at jobsite now are as follows: 墙体所
26、需施工机具部分进场安装完毕，并通过验收，且已经投入使用。后续设备会按照现场要求进行验收，合格后投入使用。已经进场的设备和施工机具见下表：序号No.设备名称Equipment产地Producing Area规格/型号Specification/Type单位Unit数量Quantity1砼搅拌运输车Truck Mix中国ChinaXEJ5270（6m3each每罐）辆Each2XZJ5259（8m3each每罐）辆Each42平板货车Lorry中国ChinaT850（8t）辆Each13自卸车Dump Truck中国ChinaEQ3141G（7.5T）辆Each14拖头Tractor中国China
27、EQ4150J（25t）辆Each15拖板Trailer中国ChinaSE9410（25t）辆Each1LY9381（20t）辆Each16汽车吊 Mobile Crane中国China25t台Each17塔式起重机Tower Crane中国China21CJ210台Each121CJ290台Each2TC6515C-12E台Each3TC7052台Each18砼搅拌站 Batching Plant中国ChinaHZS50B（50m3/h）套Set29砼布料机 Concrete Placing Boom中国China（固定式fixed）38m套Set2（行走式 movable）38m套Set1
28、10振捣棒 Vibrator中国China3570根Each1511大型移动式钢筋剪切生产线 rebar cutting product line中国ChinaGJW-150套Set112钢筋大弧弯曲机 Rebar Large Arc Bending Machine美国AmericaKRB11# 34台Each113自动钢筋弯曲机Rebar Bending Machine中国ChinaXGW-40台Each214木工圆锯机Carpenter Circular Saw 中国ChinaMJ-106A台Each115木工平面刨 carpenter plane中国ChinaMB-504台Each116
29、水泵 pump中国ChinaAS75-2CB台Each217高压水枪 High pressure water jet中国China猫王1.35MPa台Each218吸尘器 Vacuum中国ChinaWVD2002台Each119水准仪 Level瑞士徕卡NA728架Each220全站仪 Total Station瑞士TCR702架Each121手提圆盘电锯 Portable circular Saw中国ChinaC235台Each222电钻 Electrical Drill中国ChinaJIZ SD05-13A台Each423交直流电焊机 Electrical Welding Machine中
30、国上海Shanghai ChinaZXZ1-400/500台Each424逆变电焊机 Reverse Welding Machine中国ChinaZX7-400B台Each425空压机 Air Compressor中国ChinaLGD-20/8（20m3）台Each126抽水泵 Water Pumping中国China200扬升台Each427装载机 loading Truck中国ChinaZL-50台Each1XG951台Each128皮带运输机 Conveyer 中国China架Each229波纹管加工机械中国China套Set15. Construction methodology施工方
31、法5.1. Construction sequence 施工顺序Previous lift前一层Rebar mats pre-fabrication预制钢筋网片Treatment of construction joint施工缝处理Rebar mats and inserts installation钢筋网片和预埋件安装Horizontal /vertical sheath installation水平/垂直预应力管安装Fixing Rebars at the buttress附壁柱钢筋绑扎Lifting and Installing the inner formwork内模板提升和安装Adj
32、usting and fixing inserts and ducts预埋件与预应力管道校正与固定Cleaning, lifting and installing the outer formwork外模板清理、提升和安装Concrete mixing and transporting混凝土搅拌与运输Survey checking and reporting测量检查和报告Joint inspection and acceptance联合检查和验收Moistening of construction joint施工缝润湿Concrete pouring, roughing constructio
33、n joint and curing混凝土浇筑、施工缝冲毛和养护Removing formwork and applying curing compound模板拆除和刷养护剂Geometrical survey and surface inspection & treatment罐体测量和表面处理Next lift commencement开始下一层Installation of rebar mats, inserts and ducts for next lift下层钢筋、预埋件和管道安装The construction sequence of concreting for one wall
34、 lift is shown as follows单层墙体施工顺序如下：5.2. Survey control 测量控制After the concrete at central area of pile cap reached enough strength, the survey team shall set the center point accurately by using the survey control points approved by Contractor. And this center point shall be used for survey control
35、of tank diameter and verticality during construction of the wall. The detailed control methods are as follows:在中心区底板混凝土达到一定强度后，由测量人员通过总承包商批准的测量控制点精确测定罐底板中心点，在罐筒体施工过程中利用该点对罐体直径和墙体垂直度进行测量控制。具体控制方法如下：During base slab construction, at center point, use total station (Laika TCR702, Precision 2mm+2ppm) to
36、 determine tank base slab border line and the radius of inner and outer range line and directional line. 在基础施工阶段，在中心点用全站仪（徕佧TCR702 测距精度2mm+2ppm）测定储罐基础边线和墙体内外定位线的半径，和定向方位线。In wall construction period, use survey tower (detailed plan refer to appendix 14) and laser plumb aligner (do a circumferential
37、survey upwards, standard tolerance is 1/45000; survey diameter line downwards, max. tolerance is 1/2000) to lead base slab center point to the height needed for total station erection. Then survey radius and verticality of every piece of formwork with total station without prism (without prism could
38、 reduce man-made errors). During concrete pouring, do a circumferential survey every 1/3 height concrete poured and do some adjustment if necessary to control tank verticality, radian and diameter. As per wall construction requirement, survey and lead directional line up every two lifts. 在墙体施工阶段，使用测
39、量专用塔架（塔架制作参照附件14）、激光垂准仪（向上一测回标准偏差1/45000，向下对径观测极限误差1/2000），将底板上的圆心点引测到架设全站仪所需的高度，再用全站仪通过无棱镜测量（使用无棱镜可以减少扶棱镜的人为误差）每一块模板的半径和垂直度。砼浇筑过程中，每浇筑1/3高度进行一次全圆测量，发现问题及时调整，直至浇筑完成，以此来控制储罐墙体的垂直度、弧度和直径。根据墙体施工需要每两层将定向方位线向上引测一次。Survey is a key issue during the wall construction. Survey points must be placed on each in
40、ner formwork panel (top and bottom). Inner formwork panels shall be adjusted and fixed according to the surveyors instructions. Verticality and position of the vertical inserts shall be checked once fixed onto the shutter. 建筑墙体最关键的是要做好测量工作。测量点必须置于内模板上下，内模板则需根据测量员的指示进行调整和固定。在把竖直预埋件装到模板前，需先检查预埋件是否竖直，位
41、置是否正确。During pouring, surveyor shall continuously monitor the shuttering so that adjustment of formwork panels may be done during concrete pouring if required。 浇注时，测量员需时刻监视模板支撑，如需调整，则可在混凝土浇注过程中进行。After shuttering removal, full survey of the wall lift shall be performed in order to check all toleranc
42、es specified in the project specification. A formal written report shall be then submitted to the QC manager, construction manager, technical manager and the survey engineer for review and approval. 模板拆除后，全面检查分层表面是否符合规范中规定的误差，且必须向质量控制经理，施工经理，技术经理以及测量工程师递交书面报告以便复查评估。5.3. Installation of embedded part
43、s 预埋件安装5.3.1. General 总则Contractor shall provide all inserts used in the tank. The mechanical subcontractor shall weld the connection joints and adjust the deformation caused by welding. The civil subcontractor shall install and fix the inserts in accordance with the requirement of drawings and spec
44、ification.承包商负责供应罐体所用全部预埋件，机械分包商负责焊接连接和焊接变形校正，土建分包商负责根据图纸和规范要求将预埋件安装和固定。Principally, steel plate of inserts shall not be welded. Spot welding can be used to weld the stud of inert and the fixing material with agreement of CBI representative. The embedment will not be welded on wall rebars. Studs are
45、 not to be bent without approval by CBI. 预埋件安装原则上不允许在预埋件钢板上施焊或引弧，在CBI代表同意时可将固定用金属材料与预埋件上锚固筋点焊，并且不与墙体钢筋焊接，没有CBI的批准预埋件禁止弯折。5.3.2. Vertical inserts 竖直预埋件Vapour barrier inserts will be fixed with fitments that were previously installed through formwork to ensure that the insert is held in position firmly during concreting operations. 隔汽预埋件通过一个穿透模板的固定件进行固定以保证在混凝土作业过程中不会移位。The vertical insert shall be fixed temporarily by steel wire after hoisted to place by tower crane to keep the de
