钢结构施工方案(中英文对照).doc

最新资料，word文档，可以自由编辑！精品文档下载 【本页是封面，下载后可以删除!】钢结构工程施工方案Steel Structure Construction Scheme一、钢结构工程概述A brief account of steel structure work 本工程为斯比克（中国）工业设备制造有限公司之汾湖新厂房项目钢结构工程。分A-1和A-2两个单体，其中A-1屋面面积3.4万平方米，A-2屋面面积1.5万平方米。生产车间内设有桥式桁车，钢柱、钢梁采用焊接成型的H型钢，结构主材采用Q345B，檩条采用Z型钢，墙面采用双层压型钢板+保温棉的构造，屋面采用钢承板+保温板+柔性防水卷材的构造。The working area of steel structure work are production and warehouse halls, bicycle shed, total area is about 16500 square meter, roof pitch is 5%, eave height 13.75M. There will be 6 8t bridge traveling cranes in production hall, welding H-section steel column and beam, structural main material is Q345B, cold bending sheet steel Z-purlin, wall and roof cladding are double-skin pressed steel sheet and thermal insulation wool. 二、钢结构工程的特点 Characteristic of steel structure work1、该工程单坡最大跨度为18m，钢柱高度大，单榀框架的平面外刚度极小，吊装过程中做好保证结构平面外的稳定作为安全技术控制的重点。The single span of the work is 18m, the height of steel column is large, single frame plane external rigidity is very small, so the key point of safety technical control is to guarantee the stability outside the structural plane. 2、厂房最大连续24跨，长度方向252m，制作安装时应注意误差累计，做好测量控制点，保证整个厂房的安装精度。Take out 6 steel columns from grid line 914 in the production building, instead of 52.5m space truss as trimmer beam to support the upper structure and crane load, the installation of the space truss is a difficulty point of this work.三、施工现场总平面布置方案施工现场平面布置方案大体与土建单位一致，在土建单位搭设的临时设施内进行钢结构安装。三、钢构件的制作Fabrication of steel structural members （一）、制作前的技术准备Technical preparations prior fabrication 1、钢结构制作前必须熟悉设计的施工图，了解设计要求，并审核图纸，根据蓝图编制加工制作图，并在得到原设计部门的认可后方可进行备料加工。Study and check the design working drawing before fabrication, make shop drawing and get approval from designer then prepare material for fabrication.2、根据构件类型、数量、用材制定加工计划和加工程序。Make a plan and program for fabrication as per the type, quantity and material of the structural members.3、编制施工工艺和技术措施，以及对加工用的设备制定检查维护计划，使机械设备处于良好状态。Write construction techniques and technical measures, and the equipment regular examine and maintain plan, keep the machinery in good condition. （二）、主材采购计划Material requirements:1、对工程用的材料应进行选定和确认。Select and confirm the material for the project.2、各种材料均应有质量证明书和出厂合格证。若有疑议则应按国家有关标准的规定进行抽样检验，经检验合格后方可批量使用。All kinds of material should be with quality guarantee and ex-factory certificate. If there is any doubt, sampling examination should be taken according to relevant national standard, only when passed the examination material in batches can be used.3、钢材表面锈蚀等级应符合现行国家标准涂装前表面锈蚀等级和除锈等级规定。Rust degree of steel surface should conform to the present national standard .4、连接材料(焊条、焊丝、焊剂)、高强度螺栓等，以及涂料(底漆和面漆等)均应具有出厂质量合格证书，并应符合设计的要求和国家现行有关标准的规定.Jointing material (welding rod, solder, flux), high strength bolt, and coating( under coat and top coating) should be with ex-factory quality certificate and conform to the design and national standard.5、严禁使用药皮脱落或焊芯生锈的焊条、受潮结块或已熔烧过的焊剂以及锈蚀、碰伤或混批的高强度螺栓。If the skin of welding rod is peeled off or the core is rust, welding flux is wetting and agglomerating or melting, the high strength bolt is rust/damaged or taken from different batches, these materials are strictly prohibited. 6、防腐油漆应符合设计要求和有关标准的规定，并应有产品质量合格证书及使用说明。Anti-corrosion paint should conform to the design and relevant standard, and with quality certificate and operation instruction.（三）设备及工具等准备Equipment and tool preparation1、对加工制作使用的设备应事先检查，进行必要的维护。Check and maintain the fabricating equipment in advance.2、对加工制作使用的工具和计量工具应具有相当的精度，并定期送计量检测部门进行检测标定。The fabricating tools and measuring instrument should be with certain accuracy, and be examined and marked by the measurement testing department regularly.3、焊工必须具有上岗证，且应做符合其证书规定范围的工作。凡停焊时间超过半年以上时，应重新考试合格才可上岗操作。Welder should bearing the qualification certificate, and do the work within the scope stipulated in certificate. If the welding work stopped more than 6 months, the welder should be re-examined and passed the examination.（四）、钢结构制作工艺要点Key points of steel structural member fabrication焊 接矫 正小 装 配总 装 配端部铣平焊 接矫 正端部铣平成品钻孔铲磨除锈退火处理油漆包装半成品按分类堆放弯 制煨（滚圆）模压边缘加工（铣、刨、铲）制 孔（冲、钻）二次下料 割出厂放样原材料矫正器剪冲锯气 割零 件 平 直拼 装焊 接矫 正第 38 页 共 38 页weldingadjustmentpart assemblyIntegral assemblyEnd millingwelding adjustmentEnd millingPuchingRust-removalAnnealing trPainting & packingSemi-ready product storagebendingEdge machiningPunching and boringSecond material utting 割Ex-factoryloftingRaw material calibrationCutting,punching,sawingsawingGas cuttingSpare parts straighteningassemblyweldingadjustment四、钢结构安装方法Steel structure installation method(一)、安装前准备工作Preparations prior to installation根据钢结构安装工程要求，在钢结构安装前，必须对安装现场进行了解、场地已清理，吊装道路应通畅坚实，施工电源已明确，并做好如下工作：As per the requirement of steel structure installation, before installation work started, it is need to check and clear the site, insure the access for hoisting is smooth and firm, and construction power is ready, the following works are also need to do simultaneously:1、对各组预埋螺栓进行了水平高度、轴线偏移等进行测量，并与土建施工单位做好书面交接记录。Survey the horizontal level and axial deviation of the all groups of embedded bolts, make records for the handing over with the civil work team in writing.2、由于本工程构件量多面广，对钢构件应编号和确认，避免用错位置。The since the quantity of structural members is large and has a great variety, it must be numbered and confirmed to avoid mis-placed.0.0000.050RC基础水准仪(柱底标高)(基准标高)0.00(一次浇筑标高)3、会同业主或现场监理进行安装前的相关检查和验收。Make necessary inspection and acceptance jointly with the employer and supervisor before installation.（二）、钢构件运输及堆放Transportation and storage of structural members1、根据钢构件几何尺寸、单重合理配备运输车辆，运输中需做好必要的软垫绑扎。Transport structural members by appropriate vehicle as per the geometric dimension and unit weight, make necessary soft mat and binding during transportation.2、钢构件在装卸、运输过程中，必须轻拿轻放。必要时垫起，防止损伤漆膜。While loading/unloading and moving the structural members, it must be handled gently. Insert spacer while necessary to avoid damage the painting.3、运输堆放应有专人负责指挥和管理Someone must be put in charge of transportation and storage. （三）、结构吊装方法Structure hosting and installation method1、 钢结构安装思路Consideration about installation of steel structure本工程钢结构为带有桁车梁的标准门式钢架，单榀刚架平面外刚度小，进货顺序从1轴线开始，先安装12轴线的刚架，同时安装柱间支撑、屋面支撑并校正形成稳定的空间体系后，再向29轴线推进，钢柱采用单机旋转法吊装，钢梁地面拼装后采用双机抬吊法。桁架式托梁采用地面螺栓拼接，双机抬吊法。吊车梁高度距屋面檩条距离有3.5米，满足最小起吊高度，可在屋面结构安装完成后或穿插结构吊装过程中进行。The type the structure in this project is a standard portal-framed structure with moving crane beam, external rigidity of a single frame is small, the sequence of mobilization of structure is start from grid line 1, first install steel frame at grid line 12, bracing to column and roof installed and adjusted simultaneously to form a stable space system, then moved to grid line 29. Steel column to be hoisted and installed through Singe-Crane-Rotating-method, the steel beam to be hoisted through Two-Crane-Lifting-method after assembled on the ground. Truss trimmer to be assembled with bolts on the ground and hoisted through Two-Crane-Lifting-method. Space between crane beam and roof purlin is 3.5m, it is enough for minimum hosting space, and can be done after the structure installed or alternated in. 2、钢柱的吊装与校正Hoisting and installation and adjustment of steel column（1） 钢柱采用旋转法吊装，吊装示意图如下：Steel column to be hoisted through Rotating Method, diagrammatic drawing as follows:123（a） 平面布置；（b）旋转过程；1柱平放时，2起吊（b）（c）（d）（e） 中途，3直立旋转法吊装示意简图（a）（b）(a) plan layout (b) rotating process 1-column lain down 2-hoistingRotating Method Hoisting Diagrammatic Drawing(2)吊装应有专人指挥，吊装前进行安全、质量、技术的详细交底。Someone must be in charge of hoisting and installation, safety, quality and technology to be talked over in details before hoisting.(3)为提高吊装效率，在堆放柱时，尽量使柱的绑扎点、柱脚中心与基础中心三点共圆弧。For the efficient hosting, while piling the columns, put the binding point/column footing center/base center at a same arc. (4) 起吊时吊机将绑扎好的柱子缓缓吊起离地20cm后暂停，检查吊索牢固和吊车稳定，同时打开回转刹车，然后将钢柱下放到离安装面40100 mm，对准基准线，指挥吊车下降，把柱子插入锚固螺栓临时固定，并在两个方向采用临时拉结稳定柱子的结构。While the column is being hoisted slowly 20cm above the floor, stop hoisting for a while to check the sling and crane, open the swing brake, then put the column down at 40100 mm to the installation plane, align to the datum line, direct the crane descend, insert the column to the anchor bolt and fixed temporarily, tie the column at two direction to stable the column structure.(5)钢柱经初校正后，待垂直度偏差控制在20mm 以内方可使起重机脱钩，钢柱的垂直度用经纬仪检验，如有偏差立即进行校正，在校正过程中随时观察底部和标高控制块扎之间是否脱空，以防校正过程中造成水平标高误差。After initial adjustment of the column, only when the vertical deviation controlled within 20mm then can remove the hook of crane, check the verticality with theodlite, any deviation to be adjusted immediately, while adjustment is being done, observe the bottom and level control block to avoid horizontal level deviation.(6) 柱子的垂直校正，测量用两台经纬仪安置在纵横轴线上，先对准柱底垂直翼缘板或中线，再渐渐仰视到柱顶，如中线偏离视线，表示柱子不垂直，可指挥调节拉绳或支撑，可用撬动等方法使柱子垂直。在实际工作中，常把成排的柱子都竖起来，然后进行校正。这时可把两台经纬仪分别安置在纵横轴线一侧，偏离中线一般不得大于3m。在吊装屋架时或安装竖向构件时，还须对钢柱进行复核校正。Vertical adjustment of the column, fix two theodlites to the longitudinal and transverse axis, first aim at the column bottom wing or center line then move upward to the column top, if the center line drifted off the line of sight, to adjust the tie rope or support, make the column to be vertical through prying. Usually to erect a row of columns first then to do adjustment. At that time, two theodlites can be placed at one side of longitudinal and transverse axis, deviation to the centerline not more than 3m. while hoisting roof truss or installing vertical members, the steel column must be re-check and adjusted. 2、钢梁的吊装Hoisting and installation of steel beam(1) 1）吊装思路：钢架整体跨度约135米，钢梁共分9节制作及运输，最大截面钢梁节重量为2.5吨，采用分节安装的方法。本工程钢柱、钢梁、平台梁及檩条的安装均采用分件吊装法：一是对钢柱依次进行吊装；二是对柱间支撑进行吊装；三是对屋面梁、水平支撑、联系梁依次进行吊装。2）吊装顺序：第一步 吊装5-8轴线钢梁，并安装到位。第二步将4-5轴线的两根钢梁在地面上拼装成一个整体，然后吊装到位，并拉设钢丝绳稳固。第三步将3-4轴线的钢梁在地面上拼装成一根梁，并吊装到位，用缆风绳稳固。第四步将剩余的钢梁在地面拼装，然后吊装到位。并用缆风绳稳固。3）吊装机械的选择根据上面钢梁柱的吊装方案，确认该工程最大吊装重量为钢梁的吊装，根据钢架的截面特征，最大重量约5吨。钢梁采用四点起板法吊装，四点均用钢丝绳抱屋架梁用卸扣锁住，并用切口钢管包扎。钢梁吊点绑扎示意图。吊机的选用吊机选用两台16TM汽车吊，作为现场卸货、短驳、吊装钢柱、抬吊钢梁所用。 16吨汽车吊机额定性能表回转半径（m）主臂长度（m）主臂+付臂9.912.5814.9717.3519.7322.1224.524.5+7.53163.513.7612.72411.6811.6810.084.510.210.29.368.459.289.049.047.765.58.36887.286.4867.447.27.26.86.085.675.795.845.925.765.364.884.484.794.854.934.984.74.3494.134.214.24.33.83.5101.353.433.483.523.431.9122.652.622.662.692.721.4141.992.032.062.081.2161.51.51.51.0181.051.050.95200.800.65220.650.50240.45270.4最大作业半径：R=27m额定起重量G=16T支腿跨度：5.34M5.1m吊装载荷Q组装钢梁重：Q=5T不均匀系数：K1=1.1动载系数：K2=1.05风载系数：K3=1.3基本风压：W0=17.5Kg/m2S：迎风面积S钢梁=1.3330.6=41m2结构风载：W1= K3W0S钢梁 =1.317.541=932Kg=1T计算载荷：Q计=Q K1 K2+W1 =51.11.05+1=6.775T吊钩重：q1=0.4T吊索具重：q2=0.2T吊装载荷：Q=Q计+q1+ q2 =6.775+0.4+0.2=7.375T结论：考虑迎风荷载等钢梁最大起重量约7.375吨，回转半径考虑5米，主臂长度约15米左右，吊机起重量9吨7.375吨，故安全。4）钢梁的临时支撑 钢梁安装后，在形成空间单元前易失稳，应采用临时拉结固定，常用拉结方式如图示：拉结方法采用直径12的钢丝绳作为揽风绳，等主结构稳定后拆除。第一榀钢梁采用临时揽风固定，第二榀结构安装过程中与第一榀结构用檩条拉结，以保证稳定。5)钢梁翻身就位后需要进行多次试吊并及时重新绑扎吊索，试吊时吊车起吊一定要缓慢上升，做到各吊点位置受力均匀并以钢梁不变形为最佳状态，达到要求后即进行吊升旋转到设计位置，再由人工在地面拉动预先扣在大梁上的控制绳，转动到位后，即可用板钳来定柱梁孔位，同时用高强螺栓固定。因该工程第一次起吊钢梁长度为46米左右，应设五道揽风绳拉结联系，在固定的同时，用线锤检查其垂直度。第二榀后的大梁则用屋面檀条及连系梁加以临时固定，After the steel beam turned over and positioned, trial hoist must be done repeatedly and bond again , while trial hoist is being carried out it must be lifted slowly, the best state is that uniform force at each point and the beam will not deformed, then to hoist and rotate to the designed position, pull the controlling rope buckled on the beam in advance by hand on the ground, rotating to the position, fix the column and beam connecting hole with high strength bolt. Since the first hoisted beam length is 46m, 5 guy ropes should be tied, while fixing it, check the verticality with pendant. The second and the after beams to be fixed temporarily by the roof purlin and tie beam. 6)在吊装钢梁时还须对钢柱进行复核，此时一般采用葫芦拉钢丝绳缆索进行检查，待大梁安装完后方可松开缆索。对钢梁屋脊线也必须控制。使屋架与柱两端中心线等值偏差，这样各跨钢屋架均在同一中心线上。Re-check the column while hoisting the beam, normally use the chain block and steel wire rope, the rope to be removed till the beam installed. The steel beam ridge line must be controlled. Make the deviation between the truss and the column ends center line be equal, so that all the roof truss to be at a same center line.（四）高强螺栓连接The connection of the high density bolt（1）、材料Material1、螺栓、螺母、垫圈均应附有质量合格证明，并应符合设计要求和国家标准规定。The bolt, nut and washers will be accompanied with the quality pass certificate of which is complied with the national standard and the specification.2、螺栓、螺母、垫圈应保证配套，螺纹不得有损坏，保持清洁、干燥状态，并应按规格分类存放在仓库内。The bolt, nut and washers should be in uniform. The thread should not be worn-out. It should be in clean and dry state and be kept in the storage according to the specification.（2）、螺栓安装前准备工作Preparation to the bolt before installation1、检查各安装构件位置是否正确，是否符合钢结构工程施工质量验收规范（GB50205-2001）的精度要求。Check each part of the installation is in right position and make sure that the installation is comply with the “Regulation for check and acceptance to the quality of steel structure work” code no. GB50205-20012、检查安装母材的螺栓孔的孔径及孔距尺寸，孔边的光滑度是否符合要求，如有毛刺应彻底清除。Check the main material with the hole is correct in diameter and the size. Make sure that the smooth is met the specified requirement. If there is thread on the main material, we immediately remove it. 3、熟悉安装施工图纸及施工计划，并准备好操作扳手设备及相关机具。We shall familiar with the installation construction drawing and program schedule and make full