生料均化库顶钢桁架吊装施工建设方案

1、;.生料均化库顶钢结构施工方案一、 工程概况生料均化库工程为单筒体工程，库顶标高为54m，直径为22.6m，桩基承台砼强度等级为C30，筒壁、库壁为C30，库内中心锥体为C40，梁、板、柱子及独立柱基等均为C25，桩身采用C40砼，筒仓10.518m以下筒壁为800m厚，10.518m以上库壁为450mm厚，环筋的搭接长度为52d，搭接接头率为25%，库顶设钢桁架，上铺YX-70-200-600型压型钢板，库顶板为120mm厚钢筋砼板，10钢筋双层双向，采用C25防水砼，抗渗等级S6，库顶钢桁架由四榀GJ1、GJ1A与GJ2、GJ2A组成，GJ1与GJ1A关于A轴对称布置，GJ2与GJ2A关于

2、A轴对称布置，GJ1（GJ1A）尺寸为19192×2650mm，每榀重4948kg，GJ2（GJ2A）尺寸为22524×2650mm，每榀重5930kg。二、 施工方法（一） 钢梁1、钢结构制作方法A、钢结构制作前的准备：根据图纸材料表算出各处材质、规格的材料净用量，再加一定数量的损耗，提出材料预算计划，根据使作尺寸合理定货，以减少不必要的拼接和损耗，并对来料规格、尺寸和重量仔细核对材质。B、生产场布置：钢梁场地布置在生料均化库的吊塔附近，利用风化石平整一块40×10米的地方。C、钢梁制作前在现场放样，并在跨中按0.5%起拱。2、钢结构拼装和连接A、首先放样和号料

3、，根据工艺要求预留焊接收缩余量及切割、刨边和铣边和铣平等加工余量。部件切割线与号料线的允许偏差应符合规定要求。B、切割前应将钢材料表面切割区域内的铁锈、油污清除干净。切割后，断口上不得有裂纹和大于1.0mm的缺棱，并应清除边缘上的熔瘤和飞溅物。3、钢结构连接A、构件焊接：焊工应经考试并取得合格证后方可施焊，焊条使用前必须按照质量证明书的规定进行烘焙，焊丝应除净锈蚀和油污。首次采用的钢种和焊接材料，必须进行焊接工艺性能和力学性能试验，符合要求后方可采用。施焊前焊工应复查组装质量和焊缝区的处理情况，如不符合要求，应修整合格后方能施焊，焊接完毕后应清除熔渣及金属尺溅物，并在焊缝附近打上钢印。多层焊接

4、应连续施焊，其中每一层焊道焊完后应及时清理，如发现有影响焊接质量的缺陷，必须清除后再焊。焊缝出现裂纹时，焊工不得擅自处理，应申报焊接技术负责人查清原因，订出修补措施后，方可处理。严禁在焊缝区以外的线材上打火引弧，在坡口内起弧的局部面积应熔焊一次，不得留下弧坑。对接和T型接头的焊缝，应在焊件的两端配置引入和引出板，其材质和坡口型式与焊件相同，焊接完毕用气割切除并修磨平整，不得用锤击落。钢结构焊接完毕，焊缝质量检验分三级，各级检验项目、检查数量和检查方法按焊接质量检验级别进行。首先外观检查：焊缝金属表面焊波应均匀，不得有裂纹、夹渣、焊瘤、烧穿、弧坑和针状气孔等缺陷，焊接区不得有飞溅物。焊缝外观检验

5、质量标准符合规范要求，对接焊缝外形尺寸的允许偏差符合规范要求，贴角焊缝外形尺寸允许偏差符合规定的要求。第二进行无损检验：X射线检验焊缝缺陷分两级，并应符合X射线检验质量标准，其检验方法应按照GB332387规定进行。超声波检验焊缝质量应符合规范要求，并按JB1152-82规定进行。钢结构成品矫正与检验a、钢结构成品根据允许偏差进行检验，超出规定必须进行矫正。b、本工程钢结构在热态下矫正。矫正工作环境温度的控制和热加工（加热）温度的限值，应符合规范要求。进行热矫正时，控制最高加热温度及冷却速度，不得损坏钢材材料组织。c、成品检验构件的各项技术数据经验合格后，对加工过程中造成的焊疤、凹坑应予补焊并

6、铲磨平整，对临时支撑、夹具应予割除。铲磨后零件表面的缺陷深度不得大于材料厚度负偏差的1/2，产品经过检验部门签收后进行涂底，并对涂底的质量进行验收。钢结构成品表面处理、油漆、堆放和运输a、钢结构的除锈和涂底工作在质量检查部门对制作质量检验合格后方可进行。除锈与施涂工协调一致。金属表面经除锈处理后及时施涂防锈涂料，在6小时以内施涂完毕。b、钢结构油漆:涂料、涂刷遍数、涂刷厚度均应符合设计要求，配置好的涂料不宜存放过久，涂料应在使用的当天配置，稀释剂的使用应按说明书的规定执行，不得随意添加。涂层时工作地点的温度应为5-38°C之间，相对湿度不应大于85%。雨天或构件表面有结露时，不宜作业

7、，涂后的四个小时内严防雨淋。施工图中不涂装的部位不得涂装，安装焊缝处应留出3050mm，暂不涂装。涂装应均匀，无明显起皱、流挂，附着应良好，涂装完毕后应在构件上标注构件的原编号。c、钢结构成品堆放:成品验收后，堆放场地应平整干燥，并备有足够的垫木、垫块，使构件得以放平、放稳。侧向刚度较大的构件可水平堆放，当多层叠放时，必须使各层垫木在同一垂线上，同一工程的构件应分类堆放在同一地区，以便发运。钢结构安装安装施工方法本工程吊装设备选用QTZ63塔吊及150T履带式吊车配合吊装，吊装前，由施工人员弹出钢梁预留槽口的中心线与标高，经校核无误时，准备开始吊装。a、由持有特种作业上岗的起重工专人指挥，吊点

8、绑扎在距梁端4m处对称绑扎。b、根据我单位以往吊装的经验，塔吊的额定起重力矩63T.M，且有一定的安全系数，靠塔吊附近的一根梁由塔吊可以吊装就位，另三根梁需150T履带式吊车与塔吊共同配合吊装就位。吊装平面图见附图。c、吊装时要注意天气情况，六级以上大风严禁施吊。d、高空作业人员上岗前要进行体格检查，有职业禁忌者不许上岗。e、设备安全警戒区，并派专人值班。f、钢构件吊装时采取适当措施防止构件产生过大的变形，应垫好吊索与构件接触的部位，以免损伤构件。g、结构焊接，采用小直径焊条和较小电流进行，焊接次序由中央向两侧对称施焊。h、不得利用已安装就位的杆件起吊重物，以免引起变形。i、钢结构安装就位后，

9、应对在运输、吊装过程中漆膜脱落部位以及安装焊缝两侧未涂油漆的部位补涂油漆，使之不低于相邻部位的防护等级。j、为使钢件在吊起后不致发生摇摆和其他构件碰撞，起吊前在离支座的节间附近用麻绳捆牢，随吊随放松，以此保证其正确位置，绑扎点要保证吊装稳定性。g an employment tribunal claimEmployment tribunals sort out disagreements between employers and employees.You may need to make a claim to an employment tribunal if:· you don

10、't agree with the disciplinary action your employer has taken against you· your employer dismisses you and you think that you have been dismissed unfairly.For more information about dismissal and unfair dismissal, see Dismissal.You can make a claim to an employment tribunal, even if yo

11、u haven't appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any compensation awarded to you as a result of your failure to appeal.Remember that in most cases you must make an application to an employment

12、 tribunal within three months of the date when the event you are complaining about happened. If your application is received after this time limit, the tribunal will not usually accept it.If you are worried about how the time limits apply to you, take advice from one of the organisations listed unde

13、r Further help.Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation.Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an emplo

14、yment tribunal, you should get help straight away from one of the organisations listed under Further help.If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your compensation if you win the case. This is known as a&#

15、160;damages-based agreement. In England and Wales, your solicitor can't charge you more than 35% of your compensation  if you win the case.If you are thinking about signing up for  a damages-based agreement, you should make sure you're clear about the terms of the agreement. It mig

16、ht be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau.  To find your nearest CAB, including those that give advice by e-mail, click on nearest CAB.For more information about making a claim to an employment tribunal, see Employment tribunals.The

17、 (lack of) air up there Watch mCayman Islands-based Webb, the head of Fifa's anti-racism taskforce, is in London for the Football Association's 150th anniversary celebrations and will attend City's Premier League match at Chelsea on Sunday."I am going to be at the match tomorrow and

18、 I have asked to meet Yaya Toure," he told BBC Sport."For me it's about how he felt and I would like to speak to him first to find out what his experience was."Uefa has opened disciplinary proceedings against CSKA for the "racist behaviour of their fans" during

19、 City's 2-1 win.Michel Platini, president of European football's governing body, has also ordered an immediate investigation into the referee's actions.CSKA said they were "surprised and disappointed" by Toure's complaint. In a statement the Russian side added: "W

20、e found no racist insults from fans of CSKA."Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day; May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my min

21、d has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it.一字开头的年龄已经到了尾声。或许是愧疚于自己似乎把转瞬即逝的很多个不同的日子过成了同一天的样子；或许是追溯过去，对自己那些近乎偏执的怪异信念的醒悟，这些天以来，思绪一直很凌乱，在脑海中不断纠缠。总觉得自己自己似乎应该

22、去做点什么，或者写点什么。二十年的人生轨迹深深浅浅，突然就感觉到有些事情，非做不可了。The end of our life, and can meet many things really do?而穷尽我们的一生，又能遇到多少事情是真正地非做不可？During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional; J

23、unior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn't really grow up, it seems is not so important; Then in high school, think don't want to give vent to out your inner voi

24、ce can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can't remember his appearance.童

25、年时，觉得压岁钱和新衣服是过年必备，但是随着年龄的推进，会越来越发现，那些东西根本就可有可无；初中时，以为要有一场暗恋才意味着真正的成长，但三年过去后，自己心平气和的写同学录的时候，突然就发现是不是真正的成长了，好像并没有那么重要了；然后到了高中，觉得非要吐露出自己的心声才能为高中生涯里的懵懂情愫划上一个句点，但毕业晚会的时候最终还是被梗塞在了咽喉，后来再次站在他曾经挥汗如雨的球场，看着他投过篮球的球框时，突然间发现自己已经想不起他的容颜。Originally, this world, can produce a chemical reaction to an event, in additi

26、on to resolutely, have to do, and time.原来，这个世界上，对某个事件能产生化学反应的，除了非做不可的坚决，还有，时间。A person's time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his

27、 cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a self-righteous spiritual.一个人的时候，自己的想法总是特别地清晰。想要的，不想要的，界限明确，好像没有什么可以撼动自己。也曾经好像已经下定了决心去做某件事，但更多的时候是最后又打起了退

28、堂鼓。嫌恶过自己的怯懦，最终却发现有很多缘分，有很多错过，好像冥冥之中真的已经注定。那些曾经所谓的非做不可，只是青葱年华里自己给自己注射的一支强心剂，或者说，是自以为是的精神寄托罢了。At the moment, the sky is dark, the air is fresh factor after just rained. Suddenly thought of blue plaid shirt; Those were broken into various shapes of stationery; From the corner at the beginning of deep f

29、riendship; Have declared the end of the encounter that haven't start planning. Those years, those days of do, finally, like youth, will end in our life.此刻，天空是阴暗的，空气里有着刚下过雨之后的清新因子。突然想到那件蓝格子衬衫；那些被折成各种各样形状的信纸；那段从街角深巷伊始的友谊；还有那场还没有开始就宣告了终结的邂逅计划那些年那些天的非做不可，终于和青春一样，都将在我们的人生中谢幕。Baumgartner the disappoin

30、ting news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (

31、the troposphere) where our day-to-day weather lives. It will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer (called

32、 the tropopause),e can expect a lot of turbulence.The supersonic descent could happen as early as Sunda.The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth becomes the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he'll be traveling fast, so despite the distance, it will not be li