风井暗挖段二衬钢筋技术交底.doc

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1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流风井暗挖段二衬钢筋技术交底.精品文档.技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图一、交底依据1、根据沈阳至铁岭城际铁路（松山路道义）工程土建施工设计图纸及设计交底。2、根据已经审批的风井暗挖段衬砌施工方案。3、根据目前项目部掌握的现场勘测资料。4、根据目前施工情况和工期的要求。5、现行国家、行业相关技术规范、要求、标准及沈阳市有关安全、质量、工程验收等方面的地方性法规和行业标准、法律和法规。6、项目部及工区现有的

2、施工技术、施工管理和机械设备配备能力。7、类似工程的施工经验。二、适用范围及工程数量1、本交底适用于起-医区间风井暗挖段二衬施工。2、二衬钢筋工程数量断面类型28（t）20（t）8（t）28连接套筒(个)风井暗挖段115.6556.3817.834620 3、二衬钢筋配筋图 图1：风井暗挖段二衬钢筋配筋图图1：风井暗挖段二衬钢筋配筋图交底人姓 名复核人姓 名时 间时 间接受人姓 名项目总工姓 名时 间时 间技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图三、钢筋加工与安

3、装施工（一）钢筋绑扎施工顺序简述二衬钢筋绑扎共分五次施工：仰拱钢筋绑扎、边墙钢筋绑扎、边墙及中层板钢筋绑扎、边墙钢筋绑扎、拱部钢筋绑扎。主要施工步序如下：施工准备钢筋加工仰工防水板保护层施做完毕仰拱钢筋绑扎边墙钢筋绑扎边墙及中层板钢筋绑扎边墙钢筋绑扎拱部钢筋绑扎。（二）施工准备熟悉图纸、规范，及时各项技术质量标准交底。对成品钢筋的钢号、直径、形状、尺寸、数量等是否与图纸、交底相符。如有错漏，及时纠正。准备绑扎用的铁丝、绑扎工具(如钢筋钩、带扳口的撬棍)等，绑扎架等。在外观检查合格的每批钢筋中任选两根钢筋取试件，作拉伸和冷弯试验。如一项试验结果不合格，在同一批内取双倍试件进行复验，若仍有一个试样

4、不合格，则该批钢筋为不合格品。（三）钢筋加工(1)二次衬砌配筋图见附图。(2)根据配筋图加工钢筋有加工好的钢筋，一律按规格、型号挂牌，分别存放，并作好防锈工作。设专人负责。钢筋用切断机切断，所有弯钩用弯曲机成型。特殊部位的钢筋须放大样。(3)钢筋在加工弯之前调直，须符合下列规定。钢筋表面的油渍、漆污、水泥浆和用锤敲击能剥落的浮皮、铁锈等都清除干净。钢筋调直，无局部折曲。加工后的钢筋表面不应有削弱钢筋截面的伤痕。钢筋的弯制和末端弯钩均严格按设计加工，设计无要求时应符合以下规定：a.弯起钢筋弯成平滑曲线，曲率半径r不小于钢筋直径的10倍(光圆)或12倍(螺纹)。b.筋末端设弯钩，弯钩的弯曲内直径大

5、于受力钢筋直径，不小于箍筋直径的2.5倍，弯钩平直部分长度不小于箍筋直径的5倍。钢筋加工允许偏差不超过下表规定。交底人姓 名复核人姓 名时 间时 间接受人姓 名项目总工姓 名时 间时 间技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图表3-1 钢筋加工允许偏差(mm)项 目允许偏差调直后局部弯曲d/4受力钢筋顺长度方向全长尺寸10弯起钢筋弯起点位置0弯起高度-10弯起角度20钢筋宽度10箍筋宽和高+5-10（四）钢筋安装与连接 1、根据施工设计图及规范要求，钢筋直径20

6、采用机械连接，钢筋直径20采用绑扎连接，钢筋绑扎搭接长度为1.4倍LaE(LaE为受拉钢筋的锚固长度)，绑扎搭接接头连接区段的长度为1.3倍的搭接长度；为保护防水板，二衬钢筋主筋连接采用直螺纹套筒等强连接，内层分布筋根据杂散电流排放有关要求采取焊接连接，拉筋采用绑扎连接。具体如下：二衬主筋连接形式为直螺纹套筒连接，采用级机械接头；外侧分布筋为搭接绑扎连接，绑扎长度不小于35d；内侧分布筋为焊接连接，单面焊10d，双面焊5d,焊缝厚度均为0.4d(d为被连接钢筋直径，被连接钢筋直径不同时，取较大钢筋直径)；分布筋接头错开距离不小于35 d。绑扎接头受拉区不超过25%，或按设计要求施做。钢筋接头设

7、置在钢筋承受力较小处且应避开钢筋弯曲处，距弯曲点不小于10d。钢筋安装位置应符合设计要求。误差应符合下表规定。交底人姓 名复核人姓 名时 间时 间接受人姓 名项目总工姓 名时 间时 间技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图表3-2 钢筋绑扎位置允许偏差值(mm)项 目允许偏差箍筋间距10主筋间距列间距10层间距5钢筋弯起位移10受力钢筋保护层5现场焊接时应在防水板上面加垫木板或石棉板隔热层，以免防水板被烧坏；钢筋与模板间应设置足够数量和强度的混凝土垫块，以确保

8、钢筋的保护层厚度(主筋净保护层35mm，钢筋保护层采用主筋上绑扎塑料垫块的方式处置。)。2、 二衬钢筋支撑与净空控制二衬钢筋绑扎前由测量组放出同步里程、中线、标高，根据测量放线设置定位钢筋，准确控制钢筋结构，钢筋绑扎时必须严格控制尺寸，避免侵入净空。定位钢筋确定后由现场管理人员检查无误后方可根据交底进行二衬钢筋的安装。3、 钢筋连接及安装工艺a、仰拱(底板)钢筋绑扎前仰拱(底板)基面放出结构中线，每5m放一中线点。b、仰拱(底板)基面放出仰拱(底板)钢筋同步控制线。c、按设计尺寸绑扎钢筋。d、钢筋架设时保证足够的保护层厚度，不得紧贴防水板。e、绑扎好的钢筋上面架设便道，严禁踩踏成型钢筋。f、成

9、型钢筋注意保护，防止脱模剂等油脂或杂物污染钢筋。钢筋绑扎成型后要严格按照报验程序进行报检，检验程序如图2。(五)区间隧道杂散电流防护1、杂散电流对区间隧道结构钢筋焊接要求的目的和方法沈阳至铁岭城际铁路一期工程牵引供电系统是以列车走行轨为主要回流通路的直流供电系统，由于钢轨不可能长期完全绝缘于道床，特别是随着地铁的运营，道床受到污染，道床与钢轨之间的过渡电阻日益减小，就不可避免有直流电流从钢轨漏泄至道床结构及车站、隧道等其他结构和金属管线中，这些漏泄电流称为杂散电流。当这些电流由金属构件进入混凝土、土壤等介质时，对金属结构、管线就产生电腐蚀，该腐蚀称为杂散电流腐蚀。交底人姓 名复核人姓 名时 间

10、时 间接受人姓 名项目总工姓 名时 间时 间技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图项目部测量组放线定位钢筋架设现场管理人员检查 钢筋安装合格 不合格 工区自检现场管理人员检查合格项目部安质部、测量组检查不合格 合格 不合格 监理工程师合格 不合格 转入下一工序合格 不合格 图2： 钢筋绑扎检验程序流程图为减少杂散电流和尽量避免杂散电流对地铁结构钢筋和金属管线的腐蚀及向地铁外扩散，应采取杂散电流防护措施，措施为：通畅回路，既设立畅通的轨回流系统、正线走行轨绝缘安

11、装。道床屏蔽网，即在道床内设置杂散电流主收集网。根据工程的可行性情况，利用地下隧道和车站结构钢筋构成杂散电流辅助收集网，作为杂散电流防护的辅助防护措施。交底人姓 名复核人姓 名时 间时 间接受人姓 名项目总工姓 名时 间时 间技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图2、杂散电流防护设计原则 杂散电流防护只针对内衬墙内层(远离防水层)的钢筋提出焊接要求，使二衬内层钢筋形成杂散电流收集网。隧道结构内的杂散电流通过收集网经排流端子流回牵引变电所，以达到阻止杂散电流对结

12、构钢筋的腐蚀。 区间隧道结构钢筋的焊接，应保证结构钢筋成为统一的整体，使电气回路畅通。 在区间隧道结构缝两侧的结构段上引出结构钢筋连接端子(即辅助杂散电流收集网连接端子)，结构缝两侧连接端子用95mm2铜绞线连接。3、杂散电流防护具体施工措施(附图：杂散电流防护图) 区间隧道每个结构段内层的纵向钢筋、横向钢筋应用电气连通，若有搭接，应进行搭接焊，搭接长度不小于钢筋直径的10倍。 在结构段两端第一、二排横向钢筋与其结构层内侧全部纵向钢筋进行焊接。 在每个结构段中，每隔5m应将其内层横向钢筋与内层纵向钢筋全部焊接。 在垂直轨道下方(或线路中心下方)，选二根纵向结构钢筋和所有的横向钢筋焊接，此纵向钢

13、筋称为排流条。 横向钢筋与纵向钢筋电气焊接，焊缝要求高6mm。 在结构缝两侧应各有两排横向钢筋专门用于焊接固定连接端子，这些钢筋应与其跨接的纵向钢筋保证电气焊接连通。 连接端子采用508mm热浸镀锌扁钢，并与两根横向钢筋紧密焊接，焊缝要求长120mm，高6mm。连接端子设于结构缝两侧轨顶面上500mm处。四、二衬钢筋施工质量要求1、保证项目、钢筋的品种和质量，焊条、焊剂的牌号、性能及接头使用的钢板和型钢均必须符合设计要求和施工规范的规定。、钢筋表面必须清洁，不得有锈蚀，油漆，油化等污垢。、钢筋的规格、形状、尺寸、数量、间距、锚固长度，接头和连接方式必须符合设计要求和施工规范规定。交底人姓 名复

14、核人姓 名时 间时 间接受人姓 名项目总工姓 名时 间时 间技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图、钢筋弯曲成形后，表面不得有裂纹，鳞落或断裂现象。2、钢筋加工、所有加工好的钢筋，一律按规格、型号挂牌，分别存放，并作好防锈工作。设专人负责。、钢筋用切断机切断，所有弯钩用弯曲机成型。、钢筋在加工弯制前调直，须符合下列规定。 钢筋表面的油渍、漆污、水泥浆和用锤敲击能剥落的浮皮、铁锈等都清除干净。 钢筋调直，无局部折曲。 加工后的钢筋表面不应有削弱钢筋截面的伤痕。

15、钢筋的弯制和末端弯钩均严格按设计加工，设计无要求时应符合以下规定：a、弯起钢筋弯成平滑曲线，曲率半径R不小于钢筋直径的10倍(光圆)或12倍(螺纹)。b、钢筋末端设弯钩，弯钩的弯曲内直径大于受力钢筋直径，不小于箍筋直径的2.5倍，弯钩平直部分长度不小于箍筋直径的5倍。、加工允许偏差不超过表4-1规定。表4-1 钢筋加工允许偏差(mm)项 目允许偏差调直后局部弯曲d/4受力钢筋顺长度方向全长尺寸10弯起成型钢筋弯折位置20箍筋内净尺寸5五、施工注意事项1、钢筋安装施工过程中应注意防水板的保护，避免破坏。2、钢筋绑扎过程中应结合杂散电流防护、变形缝位置，进行钢筋绑扎、焊接及预埋件的施工。3、机械连

16、接处直螺纹正丝、反丝的加工要正确。4、钢筋焊接过程中注意防火。5、内层分布钢筋采用焊接连接。6、其他注意事项参照二衬安全技术交底。交底人姓 名复核人姓 名时 间时 间接受人姓 名项目总工姓 名时 间时 间技 术 交 底 书工程位置沈阳市黄河北大街工程名称沈阳至铁岭城际铁路（松山路-道义）工程土建施工第一合同段交底工程项目风井暗挖段二衬钢筋交底日期2011年10月7日交底及附图六、文明施工、环境保护及职业病防治措施（一）文明施工保证措施1、施工现场各种材料机具按施工平面布置图指定位置存放，并分规格码放整齐、稳固，做到一头齐、一条线。2、合理安排施工，使用低噪音设备，严格控制噪音，对于特殊设备采取

17、降噪消音措施，以尽可能减少噪音对周边环境的影响。3、临时给水采用市政给水管道供水，在施工现场设连续通畅的排水设施和其它应急措施，经处理后排至城市污水管道，防止泥浆、污水、废水外流或堵塞下水管道。4、现场所有用电事宜由专业电工统一安排，洞内照明线、动力线分开，做到灯明线顺等。（二）环境保护措施1、施工场地内的废料杂物必须按规定存放于废旧料区不得随意堆放。2、材料装卸、机械维修、钢铁物品的搬运使用和拆除过程中噪声排放的控制措施：加强员工环保意识教育，严禁抛掷、碰撞和大锤敲打。3、工程施工期间，严格按照国家和沈阳市有关法规要求，控制噪声、振动对周围地区建筑物及居民的影响。优先选用先进的环保机械；合理

18、安排施工作业、重型运输车辆的运行时间，避开噪声敏感时段；承担夜间材料运输的车辆，进入施工现场禁止鸣笛，装卸材料时轻拿轻放，最低限度地减少噪声扰民。（三）职业病的防治1、由隧道内通风不畅，粉尘较大，特别是其他作业面喷射混凝土作业时，水泥灰尘极大，容易使作业人员产生“吸肺病”，因此应当着重加强如下措施予以预防：混凝土喷射采用湿喷，尽量减少水泥粉尘的产生；所有作业人员都必须正确佩戴防尘口罩；加强隧道内通风，将通风管接到掌子面，及时排出粉尘；2、钢筋焊接过程中焊条燃烧所产生的烟雾、光线对人体的健康有所伤害，因此钢筋焊接过程中防护服、防护口罩面罩必须按要求佩戴。交底人姓 名复核人姓 名时 间时 间接受人

19、姓 名项目总工姓 名时 间时 间（英文版 ） easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the and , lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the la

20、ws and regulations for implementation in place. Throughout the discipline in the daily supervision and management, strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the mas

21、ses reflect the concentration of the units and departments for supervision. - strengthening supervision, discipline inspection and supervision of cadres to set an example for compliance with the and is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection organs as the execut

22、or of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak Ji

23、Ordinance to set an example of the regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do comply with and . To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of concept, and

24、 consciously safeguard and implement party compasses party, take the lead in practicing three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the as morality, politics and brought to fruition; to implement , do not want to, dare not, not with disciplinary rule

25、r to supervision; to discipline a ruler, often the control inspection, and consciously in the ideological red line to draw the row Ming Good accumulation is indeed the bottom line, so that the heart has fear, said to have quit, the line has ended. Attached: indifferent to heart, calmly to the table

26、in our life, there are many unpredictable things will happen, some good, some bad things, we cannot control is powerless to stop, but with time, you will find in life sometimes turns out to be not good, some bad things finally turned out to be a good thing, but then we muddy however did not know, th

27、is is the life teach us things. 1, life can be complex, can also be simple. Want simple life of precipitation, to have enough time to reflect, to make Become more perfect. Life is the most important thing is not to win, but the struggle; not to have conquered, but to have fought well. 2, the plain i

28、s the background of life. Live a plain life, give up on themselves is not a coward, but the wise answers; not disillusioned after the heart, such as ashes, but experience the storm after the enlightenment; not unrewarding perfunctorily, but calm attitude of life of unrestrained self-confidence. Plai

29、n living, there is no noise noisy, no earthly troubles, more did not fill in the discontent of desire, some just a calm, a calm. 3, memory of heart will not good things to erase the, life is a When no movie, pain is a beginning, the struggle is a kind of process, death is a kind of ending. Give up t

30、his giving up is the helpless, do not give up the abandoned, do not give up this giving up is ignorance, do not give up should not give up is persistent. 4, a thing figured is heaven, think impassability is hell. Since the living, to live better. Sometimes we because of too narrow-minded, too care a

31、round the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, completely depends on how we look at and deal with it. Dont always take everything back to things, and dont get into a blind alley, dont want to face, dont be narrow-minded. Poke to car

32、e, is a kind of open-minded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people; I am not afraid of the truth to tell the best friend, Im afraid he turned to it as a joke to tell dont 6, when we are in a positive fr

33、ame of mind, you will find many good things; and when we are in a negative state of mind, you will find many depressed things; life happy and worry, all is you of life attitude, optimistic, good luck; loss of sink, Eritrea company. When you are in adversity, may wish to change a point of view to thi

34、nk everything over to the good Think, because good mentality decided the fate of the! 7, people are tired, rest; heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can sympathize with you, have mercy on you. You cry, tears is yo

35、ur own; you pain, no one can understand. Then you only tears to smile. 8, each people have youth,Each youth are a story, the life of the world never gets easier, I want what, wish the world all know, as has been the same; now want anything, for fear that others know, or like to lose the same. 9, the

36、 heart move, everything in the world is followed by birth, Rangrang, important thing is often the most difficult to open ones mouth, because words will reduce its importance; to let strangers people care about your life in the good things, the original is not easy 10, do not blame, do not laugh at w

37、ho, also dont envy who. Like a person is a kind of feeling, not like a person is true. The truth is easy to explain, I feel Is unspeakable. The best travel life is that you in a strange place found a long lost touched. 11, happy life not in the bustling in, and in the peace of mind; no matter how ma

38、ny grievances, how uncomfortable, and ultimately to heal themselves or their own, others may got you to comfort, but never know your heart is how wanjianchuanxin. 12, maam, like a movie, learn to appreciate, learn to be grateful, learn tolerance, and goodness, helping others. Instead of accusing the

39、 society, as into one; and an exception is better to give than to what 13, dont envy him A sum of, dont lose your life and the life, respectively is: the former is a we experienced cannot escape in a day finally will last minute, while the latter is our persistent, we want to cherish the memory of t

40、hose people and things. 14, learn to smile, learn to strong, the world you know so many people, so many people and you are, you cannot change also cant let everyone like you, so also do not want to do. Life is too short to go crazy to love to go to waste, to chase the dream to regret. 15, when tempe

41、r, a blessing to go. A wounding elegant people, the key is to control their own emotions. With the mouth is the most stupid behavior. A control negative emotions than a can take a city more powerful water flow slow, language is expensive. People spent two years of time to learn to speak, but to spen

42、d a few years time to shut up. That is a kind of ability, that is a kind of wisdom. 16, life is not perfect, sometimes, growth is not a cry, not an eyeful of tears, there is no trace of emotion, there is no gleam of hope, no desire, no action, no static, there is only one kind of downward sinking fe

43、eling, sink A murky? 6? 7? 6? 7 sink? 6? 7? 6? 7 toward the bottom of the sink. 17, in some way, do not go, you will not know the other side scenery is beautiful. To you is not good, you do not mind too much, no one has an obligation to you; you learn knowledge, is you have weapons, you can start fr

44、om scratch, but not unarmed; how do you treat people, does not represent how others treat you, if cannot see through this point, only inviting worry. 18, time is like a sponge in the water, as long as you are willing to squeeze, the total water is still there. Every life, after the ups and downs The

45、 best test of live, to life, survival and continuation, do not stop the struggle in the joys and sorrows of life on the road, so that different soul to bear life beat, acceptance of suffering. 19, indifferent to heart, calmly in table, elegant and comfortable life, do not take what is so important.

46、The pursuit will be disappointed; to be alive, you will have trouble. Life is the most afraid of what all want to care about, but also what all grasp is not firm, without scenery, separated populations, such as not to desire, all docked in the fate of the end. Why is too rigid, the natural, to go stay not to live, let go of obsession, revel is 20,