《主厂房钢屋架及钢吊车梁(含所有跨度)施工方案》.doc

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1、垃圾发电厂工程土建标段主厂房钢屋架及钢吊车梁施工技术方案编制:审核:批准:第二垃圾发电厂工程项目部二零一一年四月目 录一、工程概况二、屋盖钢架的组合三、吊装方法的选择四、吊车梁的吊装五、屋盖钢架的吊装六、施工技术质量保证措施七、资源计划八、安全技术措施及应急预案附件:1、吊点布置示意2、吊装平面示意3、履带吊吊装示意4、汽车吊吊装示意5、接收大厅吊装示意一、工程概况:第二垃圾发电厂主厂房钢结构屋盖钢架,分为垃圾接收跨、垃圾贮坑跨及垃圾焚烧跨三跨厂房。厂房长度123m,宽度94.3m,高度44.81m。接收跨厂房屋盖钢架长度25.3m,构件高度1.0m,构件重量4.766t,安装标高为11.00

2、0m。贮坑跨厂房屋盖钢架长度35.2m,构件高度1.3m,构件重量8.5t,安装标高为42.600m。焚烧跨厂房屋盖钢架长度37.7m,构件高度1.3m,构件重量9.1t,安装标高为43.510m。垃圾贮坑跨吊车梁构件长度18m,构件高度1.7m,构件重量8t,安装标高为31.935m。二、屋盖钢架的组合:1、垃圾贮坑距厂房的屋盖钢架组合、位置靠接收厂房旁边的空地。2、组合好的屋架摆放的位置,距厂房约18m的距离,便于吊车起吊。3、组合好的屋架,必须用枕木垫平,防止屋架变形。4、屋架组合配备25t汽车吊一台。5、屋架组合的同时,在屋架上用钢管及圆钢焊好安全扶手,便于在安装时拴挂安全带。6、对组

3、装好的钢屋架质量进行检查,构件的几何尺寸、永久变形和缺陷超出允许偏差时,应进行处理,并符合下表的规定; 表:01项 目允许偏差检验方法1组装单元的总长5.0钢尺2接口截面错位2.0钢尺3轴线错位4.0钢尺4组装单元的弯曲矢高10.0拉线和钢尺三、吊装方法的选择:(一)、方案一吊装顺序(含接收跨吊装)选择320t履带吊,主臂长度42.7m,变幅副臂长度54m,在58m吊装幅度处可吊重18.8t(见吊车工况载荷表),布置在垃圾接收跨场地。单侧移动吊车,将垃圾贮坑跨厂房、垃圾焚烧跨厂房和垃圾贮坑行车梁在同一侧吊装完,吊车只在单侧移动,为喷雾塔施工提供条件。等待贮坑跨和接收跨钢构件吊装完毕,最后再使用

4、布置于接收跨厂房内的25吨汽车吊吊装接收跨钢屋架。1、先吊装垃圾贮坑跨9轴线吊车梁,单件重量8t,安装标高为31.935m,吊装幅度为38m。吊装作业时间约3天。2、吊装垃圾贮坑跨5轴线吊车梁,单件重量8t,安装标高为31.935m,吊装幅度为12 m。吊装作业时间约3天。3、吊装焚烧跨厂房屋架,屋架数量为19榀,单件重量9.1t,安装标高为43.510m,吊装幅度为57m。吊装作业时间约8天。4、吊装垃圾贮坑跨厂房屋架,屋架数量为19榀,单件重量8.5t,安装标高为42.600m,吊装幅度为24m。吊装作业时间约8天。5、最后使用25吨汽车吊吊装接收跨钢屋架,屋架数量为19榀,单件重量4.7

5、66t,安装标高为11.000m,吊装幅度为8m。吊装作业时间约8天。6、320t履带吊图表(二)、方案二吊装顺序(不含接收跨吊装)选择400t汽车吊车,400t汽车吊车主臂57.9m,加32m副臂可以满足焚烧跨厂房、贮坑跨厂房和5轴线吊车梁安装。1、布置在垃圾接收跨场地,吊装垃圾贮坑跨5轴线吊车梁,单件重量8t,安装标高为31.935m,吊装幅度为37.1+25m。吊装作业时间约3天。可以与锅炉吊装同步作业,提前交付垃圾贮坑跨安装行车。2、吊装垃圾贮坑跨厂房屋架,屋架数量为19榀,单件重量8.5t,安装标高为42.600m,吊装幅度为43m。吊装作业时间约10天。3、利用锅炉安装完工后的32

6、0t履带吊,吊装9轴线吊车梁,单件重量8t,安装标高为31.935m,吊装幅度为46m。吊装作业时间约7天。4、400t汽车吊转场至喷雾塔场地。5、吊装焚烧跨厂房屋架,屋架数量为19榀,单件重量9.1t,安装标高为43.510m,吊装幅度为43m。吊装作业时间约10天。(三)、方案比较选择方案1施工,经济性好,320t履带吊月租加进出场费约45万元。400t汽车吊单日台班5万元,月租费至少在80万元以上。400t汽车吊车使用比较灵活,设备进出场方便。320t履带吊吊重能力比400汽车吊强,吊装幅度和高度范围大,车体移动方便。320t履带吊在场内锅炉施工单位吊装使用后,我方接着使用,减少进出场费

7、用。对此,建议选择320t履带吊。钢屋架组装、吊装及行车梁吊装表名称重量安装半径吊车吨位作业时间组合行车梁AU轴交9轴梁7根(贮坑跨)8t*7根11m320t履带吊3天AU轴交5轴梁7根(贮坑跨)8t*7根42m320t履带吊3天屋架AU轴交913轴屋架19榀(焚烧跨)9.1t*19榀57m320t履带吊8天AU轴交59轴屋架19榀(贮坑跨)8.5t*19榀24m320t履带吊8天AU轴交15轴屋架19榀(接收跨)4.766t*19榀8m25t汽车吊8天焚烧跨屋架组装19榀25t汽车吊10天贮坑跨屋架组装19榀25t汽车吊10天接收跨屋架组装19榀25t汽车吊7天四、吊车梁的吊装:吊装开始时间

8、根据锅炉安装进度和土建工程施工进度,吊装安装开始时间约在2011年7月8日。1、吊车梁的安装按制作编号依次进行吊装,钢吊车梁堆放在相应的柱基础旁。2、吊装前在32m的安装位置,每跨搭建好脚手架,便于安装人员操作。3、吊车梁单件重量达9.1t ,查钢绳规格手册,吊装选用钢绳为:637+1,钢丝抗拉强度为170kg/m2,26mm钢绳,安全系数选5倍,许用拉力8530kg,可以安全使用。4、吊装吊车梁时,捆扎的位置采用2分支吊绳,钢绳长度为10m,角度为45度。5、捆扎时用废轮胎壳垫在工字梁的边缘,防止割伤钢绳。6、吊装时,梁的两端拴好带绳,防止物体的空中旋转。7、吊车梁吊到安装位置,指挥吊车的人

9、员,必须用对讲机与吊车司机联系,指挥吊车司机进行安装到位。8、吊车梁安装校正,并固定好后,方能取掉吊车钩及吊绳。9、吊车梁全部安装完成后再进行整体校正,最后根据施工图要求将必要的节点进行焊接。报监理进行实物验收。吊车梁安装的允许偏差见下表: 表:02项 目允许偏差检验方法1梁的跨中垂直度H/500吊线和钢尺2侧向弯曲矢高L/1000, 10.0拉线和钢尺3垂直上拱矢高10.04两端中心线位移 5.0拉线和钢尺5梁与柱加劲板中心的偏移t/2吊线和钢尺6同跨间吊车梁顶面高差10.0用经纬仪、水准仪、钢尺检查7同跨间下挂式吊车梁底面高差10.08相邻两柱间吊车梁顶面高差L/1500, 10.09相邻

10、两吊车梁接头部位中心错位3.0上承式顶面高差1.0下承式底面高差1.010同跨间吊车梁中心跨距10.011轨道中心线偏移t/2五、屋盖钢架的吊装:(一)吊装前的准备1、吊车停放的位置及准备工作就绪完成后方能进行吊装作业。2、起吊前起重指挥人员应与吊车司机确定联系号令,便于完成吊装作业。3、每跨柱子的安装位置,土建应搭好脚手架,便于安装人员操作。4、钢绳的选用:637+1,钢丝抗拉强度为170kg/m221mm的钢绳安全系数取5倍,许用拉力为5920kg,采用4分支吊装,可以安全使用。5、屋架吊装同样按制作编号依次进行吊装(二)吊装1、钢架的吊装捆扎位置采用4分支吊绳,钢绳长度为16米2,角度为

11、450。2、捆扎时用废轮胎壳垫在工型钢的边缘,防止割伤钢绳。3、屋架两端拴好带绳,防止物体在空中旋转。4、屋架吊到安装位置,指挥人员应指挥吊车司机,缓慢将屋架吊放到安装位置。5、屋架校正,固定牢固后方能取掉吊钢及吊绳。6、第一榀屋架起吊就位后应在两侧设置四根缆风绳,并临时固定,待相邻屋架上下支撑安装完毕形成空间稳定体系后,才能解除。7、屋架的校正应通过两端支座拉一根细绳,该绳距两支座板距离相等,在距屋架中间上弦相同距离处垂下0.5kg的线锤,线锤若与拉绳相贴合,该屋架则垂直。待屋架校正后,再把与柱子连接的高强螺栓拧紧并将丝口打毛。8、为保证吊装时的稳定性,吊装时应从厂房一端向另一端逐步吊装,同

12、时连接好部分檩条、支撑和隅撑等构件,以形成稳定的结构单元。9、应采用组合式吊装。先在现场的组装平台上把屋架用高强螺柱连接好,再用吊车整体吊装,必要时在吊具上加设扁担。10、钢屋架在吊装时,必须按照要求,采取侧面刚度加强措施。即在屋面梁的上、下翼缘板每1/3的位置,共设置2*2个拉紧点。利用8个以上的钢丝绳和2t/6m的手动葫芦,一边2根钢丝绳固定在钢梁上、下翼缘,另一边2根钢丝绳也固定在钢梁上、下翼缘。然后,将同侧的2根钢丝绳固定在基础梁或者已安装的钢柱柱脚,另一侧的钢丝绳同样处理,进行反向张拉紧。待系杆、支撑安装部分,形成稳定结构整体后,方可拆除这4根揽风固定钢丝绳。 11、吊车将屋架吊到位

13、后,按安装要求进行校正,并紧固螺栓、焊接。六、施工技术质量保证措施:1、工程施工必须严格按照施工验收规范执行,在施工过程中必须做到三检(自检、互检、交接检);对监理工程师捍卫贩问题应及时整改,杜绝不合格工序流入下一道工序,做到“谁施工、谁负责”;加强成品保护意识。2、焊接材料应符合要求 并附带生产许可证明,螺栓也应附带材料证明。3施工人员在施工生产前认真学习并掌握施工规范和实施细则,认真熟悉图纸,逐级进行技术交底,在施工过程中做好原始记录,各工序都要进行严格的自检、互检(重点是专业检测人员的检查),严格执行上道工序不合格,下道不交接的制度,坚决不留质量隐患。4、钢结构安装质量标准:主控项目质量

14、标准检验方法检查数量1框架柱支承面定位轴线、标高、混凝土强度,应符合设计要求和国家现行标准的规定。检查复测记录全数检查2构件验收应符合设计要求和规定。运输、堆放和吊装等造成的钢构件变形应矫正。钢尺检查,检查钢构件出厂合格证3顶紧接触面优良:顶紧接触面不少于70%紧贴,且边缘最大间隙不应大于0.8mm用钢尺0.3和0.8厚的塞尺检查4钢屋架垂直度和侧弯曲跨中垂直度h/250,15.0用吊线、拉线、经纬仪和钢尺检查抽查10%,多于3个侧向弯曲矢高L/1000, 10.0一般项目质量标准检验方法抽查数量1标记主要构件中心线标高点标记齐全观察检查抽查10%多于3个2屋架、梁安装精度支座中心线对定位轴线

15、偏差10.0用拉线和钢尺3柱顶及牛腿5.08.0水准仪4支撑安装精度间距5.0用拉线和钢尺弯曲矢高L/750, 10.05现场焊缝组对精度无垫板间隙3.00.0尺梁检查有垫板间隙3.02.06结构表面表面干净无焊疤,泥沙等污垢观察检查七、资源计划:(一)、机具设备1、25t吊车一台配合组装屋架2、电焊4台安装连结使用3、手拉葫芦2t4个安装支撑时校正使用4、气割工具2副5、安全带12副6、钢绳637+126mm2对637+121mm2对7、卸口5t4个3t 4个2t8个8、安装警戒带400米(二)、人员配备1、现在负责联系人员1名2、铆焊工8名3、起重工4名4、现场安全员1名八、安全技术措施及

16、应急预案:(一)、临时用电安全措施1、外电防护措施,必须符合安全距离。2、工作接地与重复接地应符合要求,保护零线与工作零线不应混接。3、符合“三级配电两级保护”,开关箱应有漏电保护器,电箱应有隔离开关,必须“一机、一闸、一漏、一箱”,安装位置正确。4、照明应有专用漏电保护器,灯具金属外壳应有接零保护,潮湿作业应使用36V安全电压,手持照明灯应使用36V以下电源供电。5、电线老化,破皮处应用绝缘胶布包扎,线路过道应有保护电杆、横担,架空线路符合要求,使用五芯线电缆,不应使用四芯线电缆,加一线作为五线电缆,电缆架设或埋设应符合要求。6、闸具、熔断器参数应与设备容量匹配,不允许用其它金属线代替熔丝。

17、7、变配电装置应符合安全规定。(二)、吊装注意事项1、参加吊装,安装的施工人员,进入现场必须带好安全帽。2、必须坚守岗位,并根据指挥者的命令进行工作。3、指挥吊车的指挥者应吊车司机统一信号、口令。4、指挥者应站在能看到吊装全过程并被所有施工人员全能看到的位置上,以利直接指挥各个工作岗位。5、吊装过程中,任何岗位出现故障,必须立即向指挥者报告,没有指挥者的命令,任何人不得擅自离开岗位。6、吊装时先设置好安全警戒区域拉好安全警标带。7、高空作业要系好安全带,地面作业人员要戴好安全帽,高空作业人员的手用工具要用工具袋,在高空作业时不得扔掷。8、在高空作业时,每个施工人员必须拴挂好安全带后才能作业。9

18、、认真执行起重吊运方案及技术,安全要求和措施,正确使用绑捆物件的方法。10、做好作业过程中的监护工作,非作业人员不得进入作业区,任何人不得停留在已吊起的吊物下方。11、特种作业须持证上岗,且必须遵章守纪,佩戴标记。12、施工作业中,每个施工人员必须严守安全操作规程,做到安全第一,保障人员及物件的安全。13、应注意天气预报,如遇阵雨,应暂停施工。14、气温过高时,宜避开中午施工。15、吊机吊装区域内,非操作人员严禁入内,把杆垂直下方不准站人。吊装时操作人员精力要集中并服从指挥者号令,严格违章作业。起重作业应做到“五不吊”;手势指挥不清不吊;重量不明不吊;超负荷不吊;视线不明不吊;捆绑不牢或重心不

19、明不吊。16、彩钢板屋顶施工时,禁止穿拖鞋和赤脚进入现场。(三)、应急预案1、发生高处坠落事故应急救援措施发生高处坠落事故,施工单位应立即将受伤人员送往就近医院治疗。在抢救时注意止血、通风、保暖。在抢救方法上要根据伤害的不同情况采取妥当的方式进行,避免事故扩大。下肢骨折须用担架移动,脊椎骨折伤员用门板或其它硬板担架;搬运伤员时,使其面向下,由34人分别用手托其头、胸、骨盆和腿部,动作一致平放到担架上,然后用三角巾或其它宽布带将伤员固定在担架上以防移动,颈椎骨折,高位胸椎骨折搬运时,要有专人牵引头部,伤员仰卧在担架上,并用砂袋或枕头垫在头颈两侧,避况晃动。2、发生各类电气事故应急救援措施、若是发

20、生触电伤人事故,现场应迅速切断电源,使触电者从带电体上解脱下来,再根据触电者的具体情况,进行有针对性的救治;若不能断电时,可用绝缘工具来切断电线也可用绝缘物将落在触电者身上或压在身下的电线挑开或拉开。对于高压带电体上触电者的抢救,其难度较大,即使要拉闸,也必须戴上绝缘手套,穿上绝缘鞋,使用符合安全要求的绝缘工具。发生高处有人触电时,应争取时间及早在高处施救,避免高空坠落事故;救护人员登高时应随身携带必要的工具和绝缘工具以及牢固的绳索等。当触电者从带电体上被解脱后,应立即根据触电者的具本情况,进行现场检查和救治,现场人员应立即派车送伤者到职工医院。由现场指挥者指派电工,在发生事故区域作好警示标志

21、,并派人警戒,防止其它人员误入危险区域。3、发生起重作业伤害事故应急救援措施事故现场的相关人员应立即停止作业。立即通知医务人员和救护车到现场,展开相应急救措施,救护伤员。在抢救方法上要根据伤害的不同情况采取妥当的方式进行,避免事故扩大;下肢骨折须用担架移动;脊椎骨折伤员用门板或其它硬板担架;搬运伤员时,使其面向下由34人分别用手托其头、胸、骨盆和腿部,动作一致平放到担架上,然后用三角巾或其它宽布带将伤员固定在担架上以防移动;颈椎骨折、高位胸椎骨折搬运时,要有专人牵引头部,伤员仰卧在担架上,并用砂袋或枕头垫在头颈两侧,避免晃动。若发生重伤以上事故,应立即保护事故现场,设立警戒区域,并派人警戒。由

22、工程管理部通知相关单位起重工等人员到场,并准备好钢绳等救援物品,在第一时间内实施紧急救援,并对事故现场进行处理,防止事故进一步扩大。事故现场如已影响生产环境,且不具备生产条件,请示主管领导后,在局部区域或整个作业线作停产处理。Opinions and suggestions on the partys mass line educational practiceAccording to the central and provincial, municipal unified deployment, according to municipal Party committee about ca

23、rrying out the partys mass line educational practice activity in the citys implementation opinions, the spirit of the partys mass line educational practice activities from 20* in January to 99 months, carried out at all levels of departments and directly affiliated institutions and grass-roots party

24、 organizations. According to my actual County, the county to carry out the education practice put forward the following implementation opinions.First, the overall requirementsCounty county education practice to the eighteen Party of eight, the spirit of the the third Plenary Session of the 18th CPC

25、Central Committee as the guidance, conscientiously implement the spirit of general secretary Xi Jinping book series of important speech, earnestly implement the Central Committee really, opinions and advice , party implementing the guiding ideology of opinions to determine the objectives and require

26、ments, step method, in accordance with the look in the mirror, dress up, wash bath, cure treatment, the general requirements of for the people pragmatic honest people as the theme, in carrying forward the spirit of Zhuanglang Zhuang, improve their work style, service to the masses of the people, the

27、 foundation of consolidating grassroots, promote transformation across efforts, to further implement the central eight regulations and The opposition party and government austerity waste regulations , double section provincial regulations, municipal provisions of the twelve plan and the implementati

28、on measures for on improving the work style of close ties with the masses law, highlight style building, carry out the whole wind spirit, resolutely oppose formalism, bureaucracy, hedonism and wasteful extravagance to solve the problems, Party members and cadres of the style and the masses of people

29、 strong, the Ministry of Party members and cadres to further improve their thinking and understanding, to further change the style of the wind, the masses to close, honest and pragmatic people honest image to further establish the foundation to further reinforce the basic level. Style of the buildin

30、g of the new results to promote the construction of a powerful force of the county and the ecological culture of the county and county construction.In educational practice activities of the unit is mainly: the county and below county departments under the organs, enterprises and institutions directl

31、y under the township, street, and community, village, non-public economic organizations, social organizations and other grass-roots organizations. Agencies and branches, each single unit, follow the rules on internal institutions. Educational practice with step by step.To adhere to the county leader

32、ship, leadership and leading cadres to focus on outstanding catch to directly contact the service of the masses of law supervision departments and window units, service industry, educational practice, pay attention to grasp the heavy towns, streets and villages, community education activities and th

33、e masses of grassroots groups in close contact to strengthen, and the majority of Party members, cadres and the mass line line Marx doctrine view of the masses and the partys education.Always speak seriously as a basic attitude, adhere to positive education, to carry out criticism and self criticism

34、 group, adhere to the pragmatic, more emphasis on leadership, pay more attention to the layers of the demonstration, more focus on the four winds, solve the problem, pay more attention to open the door, the participation of the masses, pay more attention to the classification guidance. Orderly, pay

35、more attention to the cooperation and cohesion driven, more strict requirements on injection, really supervision practice, ensure education practice is not empty is not empty is not partial, not as a mere formality.Two, the key point of the taskThe main task of the countys education practice is to s

36、eize against four wind this focus on centralized solve outstanding problems asked County, township leadership and leading cadres of the four winds, the disadvantages of the style, scale behavior to a large scale investigation, overhaul, cleaning greatly. At the same time, respond to the concerns of

37、the masses, safeguard the interests of the masses, pay attention to solve practical problems, solve the people around the unwholesome tendencies especially on eat, take the card, Yong lazy luxury, extravagance and waste fees, privileges and other issues, timely and effective, without any discount to

38、 solve, to improve the style of real implementation of the requirements of real to the grassroots, real let group Benefit the public.(a) focus on solving the four winds outstanding issuesThe central and provincial requirements, the county leadership and leading cadres of key performance concept is n

39、ot correct, do not dare to play, to engage in image project, political project, a leadership guide, a set of ideas, orders and prohibitions, and a policy, there are countermeasures county. The units directly under the heavy focus on solving Yung lazy drag, buck passing skin, work is not implemented,

40、 the service is not active. The dynamic problem of law enforcement and supervision departments and window units, service industry mainly solve the door hard, ugly face, something difficult, and arbitrary charges, fines, levies, and breach of privilege, chinakayao, not the problem of law. The townshi

41、p, street The collar of leading bodies and leading cadres to solve key does nottheir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand acq

42、uisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business road the competit

43、ion of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resources within the group, the city resources, other industries and regional resources, mutual tr

44、ust, mutual benefit, seeking win-win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examination and approval procedures, strict regulation of economic activities, attract injection the social investment to the industry group

45、, to achieve leveraging the development, ensure that the value of state-owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training of cadres and workers of the existing business, firmly establish the concept of the market, enhance the

46、 sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to market competition, improve management and operation of the market. At the same time, according to the need of industrial development, vigorously the introduction of high-quality management management personnel, and strive to build a high-quality professional management team, hard work, and promote the

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