《2014空心薄壁墩安全专项施工方案》.doc

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1、目 录一、编制依据1二、编制目的1三、使用范围1四、工程概况1五、水文地质条件2六、安全管理组织机构图2七、材料、设备、人员进场3(一)投入的人员、设备3 (二)材料进场情况4八、施工方案4(一)测量控制5(二)钢筋加工及安装5(三)模板安装7(四)砼浇筑7(五)模板拆除8(六)模板翻升9(七)砼养护9(八)空心墩质量控制9(九)接缝处理9(十)墩身施工质量通病及预防措施10(十一)墩身施工外观质量控制12九、安全培训教育保证13十、安全管理措施14(一)作业人员的安全管理措施:14(二)机械设备安全管理措施:14(三)施工临时用电安全管理措施:15(四)塔式起重机安全管理措施:15 (五)高

2、空作业安全管理措施16十一、危险因素分析及其措施17(一)人员坠落17(二)物件坠落18(三)钢筋、模板倾覆19(四)机电设备19(五)墩身模板拆除作业19(六)脚手架倾斜坍塌20十二、空心薄壁墩施工安全控制措施20(一) 钢筋加工及安装安全控制措施20 (二)模板安装安全控制措施21(三)模板拆除安全控制措施21(四)砼施工安全措施22(五)爬梯使用安全23(六)操作平台安装使用安全23十三、季节性施工安全控制措施23(一)雨季施工安全控制措施23(二)冬季施工安全控制措施24十四、应急预案24(一)应急预案组织机构和职责24(二)职责:25(三)事故报告程序25(四)现场事故应急处理25O

3、pinions and suggestions on the partys mass line educational practiceAccording to the central and provincial, municipal unified deployment, according to municipal Party committee about carrying out the partys mass line educational practice activity in the citys implementation opinions, the spirit of

4、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 organizations. According to my actual County, the county to carry out the education practice put forward the foll

5、owing 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 Central Committee as the guidance, conscientiously implement the spirit of general secretary Xi Jinping book serie

6、s of important speech, earnestly implement the Central Committee really, opinions and advice , party implementing the guiding ideology of opinions to determine the objectives and requirements, step method, in accordance with the look in the mirror, dress up, wash bath, cure treatment, the general re

7、quirements 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 foundation of consolidating grassroots, promote transformation across efforts, to further implement the central e

8、ight regulations and The opposition party and government austerity waste regulations , double section provincial regulations, municipal provisions of the twelve plan and the implementation measures for on improving the work style of close ties with the masses law, highlight style building, carry out

9、 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 strong, the Ministry of Party members and cadres to further improve their thinking and understanding, to further

10、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 building of the new results to promote the construction of a powerful force of the county and the ecological culture of t

11、he 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 directly under the township, street, and community, village, non-public economic organizations, social organizations and

12、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 leadership, leadership and leading cadres to focus on outstanding catch to directly contact the service of the masses of

13、 law supervision departments and window units, service industry, educational practice, pay attention to grasp the heavy towns, streets and villages, community education activities and the masses of grassroots groups in close contact to strengthen, and the majority of Party members, cadres and the ma

14、ss 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 group, adhere to the pragmatic, more emphasis on leadership, pay more attention to the layers of the demonstratio

15、n, 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 more attention to the cooperation and cohesion driven, more strict requirements on injection, really supervision p

16、ractice, 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 seize against four wind this focus on centralized solve outstanding problems asked County, township leadership and

17、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 the masses, safeguard the interests of the masses, pay attention to solve practical problems, solve the people aro

18、und 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 solve, to improve the style of real implementation of the requirements of real to the grassroots, real let group

19、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 not correct, do not dare to play, to engage in image project, political project, a leadership guide, a set of ideas

20、, 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, the service is not active. The dynamic problem of law enforcement and supervision departments and window units, s

21、ervice 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 township, street The collar of leading bodies and leading cadres to solve key does nottheir own conditions to develop the

22、 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 acquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and pub

23、licity 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 competition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote th

24、e integration of resources. To further broaden their horizons, effective integration of resources within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking win-win principle, in the framework of national policies and regulations, strict insp

25、ection and argumentation, legal consultation, examination and approval procedures, strict regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the development, ensure that the value of state-owned assets.(five) to strengthen the cons

26、truction 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 sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to market co

27、mpetition, 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 entir

28、e workforce knowledge structure, age structure, structure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy. Serious research about social support the development of cultural undertakings in the count

29、ry and the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development.薄壁空心墩安全专项施工方案一、编制依据1、中华人民共和国安全生产法(中华人民共和国主席令70号);2、

30、生产安全事故报告和调查处理条例(国务院493号令);3、建设部建设工程安全生产管理条例(中华人民共和国国务院令第393号);4、交通部公路工程施工安全技术规范(JTJ076-95);5、特种设备安全监督条例;6、公路水运工程安全生产监督管理办法;7、施工现场临时用电安全技术规范(JGJ46-2005);8、张承高速公路承德段招标文件。二、编制目的为确保施工全过程不发生人员死亡安全事故;确保施工全过程不发生重伤安全事故和职业病伤害事故;做到安全施工,保障人员在施工过程中的人身安全,维护正常的社会秩序和工作秩序,特制定本项目薄壁空心墩安全专项施工方案。三、使用范围本方案适用于#合同段桥梁薄壁空心墩

31、施工。四、工程概况本合同段桥梁累计长2450.5m,占合同段线路长度39%;其中桥梁工程高墩主要集中在滦河1号大桥和滦河2号大桥,空心墩高达47米,由于两桥跨度大、桥位高、技术含量高、空心墩施工复杂等因素影响,相对来说施工难度大,施工进度缓慢,也是制约路基贯通的障碍,为此,加大模板数量和垂直机械进行突击性;空心墩钢模板采用翻模施工工艺。全部采用预应力混凝土装配式T梁连续,并集中预制分批安装工艺,依加快施工进度为目的。因此作为本项目工程进度的制约点,也是本项目的难点、关键点之一。滦河1号大桥位于滦平县西沟乡大河西村南,场区内交通状况较差,地形起伏较大,地势开阔。本桥平面分别位于直线、缓和曲线(参

32、数A=648.074,右偏)和圆曲线(R=1500,右偏)上,桥面纵坡i=1.36%,墩台径向布置。该桥上跨滦河,上部结构为40m(后张)预应力砼先简支后连续T梁,下部结构中1、2、11号为圆柱式桥墩;3、4、5、6、7、8、9、10号墩为薄壁空心墩,均为群桩基础,桥梁跨径组合为340+340+340+340全桥共四联,桥长489m。滦河2号大桥位于滦平县西沟乡梁后村南约250m,场区内交通较差,地势开阔,起伏较大。本桥平面位于缓和曲线(起始桩号K48+054.5,终止桩号:K48+204.511,参数A:648.074右偏)和直线上;纵断面位于i=2%,R=15000m的竖曲线上,该桥上跨滦

33、河,上部结构采用40m预应力砼(后张)先简支后连续T梁,下部结构5、6、7、8号桥墩采用圆柱桥墩、1、2、3、4号墩为薄壁空心墩,桥梁跨径组合为340+340+340全桥共三联,桥长369m。薄壁墩高度表K47+300滦河1号大桥薄壁墩高度K48+239滦河2号大桥薄壁墩高度桥墩编号左幅h(cm)右幅h(cm)桥墩编号左幅h(cm)右幅h(cm)3903.63898.72988.82988.842204208.73428.83428.84546.44528.73138.83138.84712.94687.12998.72998.74596.94563.13766.93733.13426.933

34、93.13036.93003.1五、水文地质条件项目区西北靠内蒙高原,受高压控制较大,属大陆性季风气候、气候类型为寒温带暖温带过度,半干旱相半湿润过度,大陆性、季风型燕山山地气候。总的特点是春秋干旱多风,冬季干寒漫长,夏季短促,雨量充沛,昼夜温差悬殊。资料显示,常年平均气温北部坝上高原-1.4 15,北部4.96.9,中部7.69.0,南部7.58.8,南北相差约10,全市平均气温7.5。1月份气温最低,月平均-921.5。全市年平均降水量402.3882.6mm。由北向南递增,坝上为411.6514.0mm,最多年份达706mm;中部501.0609.1mm,最多年份达855mm,该区年蒸发

35、量1838.7mm;年均日照28002900h;无霜期坝上为7380天,坝下地区150天左右,区域最大冻土深度坝上为1.6m,坝下地区为1.26m。项目区域河流众多,河流长度较长,流域面积较大,其特点是源短流急,汛期暴涨暴落,非汛期积河甚少或干涸,大都属于季节性河流。区域内主要河流为滦河。滦河水量较丰,流域面积总量47.9亿m3,流量的季节变化较大,因夏季多暴雨,69月径流量可占年径流量34,最大月8月可占全年径流1413。河道宽4002000m,坡度比降2.9,历史最大流量为1156 m3s(1994年)。本工程主要与滦河交叉7次,交叉位置均位于滦平县境内,交叉位置以上流域面积1423914

36、298m2。六、安全管理组织机构图针对我标段的空心薄壁墩施工,项目部成立了以项目经理何红民黄求福为组长,总工徐文光、副经理史朋、孙国连、李国帅为副组长的安全施工领导小组,各工区设专职安全员,确保对空心薄壁墩各工序施工安全进行有效地控制。项目部和各作业班组均签订了安全生产目标责任书,工程生产目标责任书明确安全生产目标,有针对性地制定安全保证措施,明确双方责任。建立项目部各级、各部门和各人员安全生产考核制度。安全生产领导小组如下: 安全生产领导小组图组长:黄求福 副组长:徐文光 副组长:史 朋副组长:孙国连 副组长:李国帅综合部:李金钟 工程技术部:徐元平安全环保部:徐海 物资设备部:张申 计划合

37、同部 :李艳明财务部 :曹岭工地试验室:张维 农民工工资管理办公室 :蔡长河 个农民工工资管理办公室 七、材料、设备、人员进场(一)投入的人员、设备1、投入的人员管理人员2人 技术人员5人 技术工人50人 普通工人200人2、投入的设备按照“同行先进、满足需求、性能良好、互相配套”的原则进行施工机械设备的配置,施工机械配置表见下表。机械设备配置表序号设备名称数量性能备注125吨吊车5台良好2装载机2台良好3塔吊5台良好4插入式振捣器15台良好5发电机2台良好6钢筋切割机4台良好7钢筋弯曲机4台良好8钢筋调直机2台良好9电焊机10台良好10混凝土运输车8台良好11混凝土泵车1台良好12电渣压力焊

38、6台良好(二)材料进场情况(1)拌合站已正式投入使用,能满足施工生产的需要;(2)各种型号钢筋已经运至钢筋场,并已经开始加工。八、施工方案空心薄壁墩采用翻模法施工,采用塔吊进行模板拼装和钢筋吊运。其工艺原理为:翻模是一种自下而上逐层上翻循环施工的特殊整体钢模,由三层模板组成一个基本单元。当浇筑完上层模板的砼后,将下面两层模板拆除翻上来装在第三层模上面进行施工,以此类推,循环施工,直至桥墩施工完毕。每节翻模由内、外整体钢模板、三角支架、砼支承块、对拉螺栓、吊挂脚手、栏杆、斜拉索具及步行板组成。每块整体钢模板高2m。三角支架高1420mm,宽1220mm,由75755mm角钢组成。对拉螺栓穿过内、

39、外模板孔眼及砼支撑块,将内外三脚架拉紧,从而使内外模板成为一体。为方便人工施工,设计了作业平台。由支架、纵横梁和平板组成,支架固定在中层模板支架底部、上部支撑着平台的纵、横梁。详见“翻升模板结构图”。翻升模板结构图 (一)测量控制桥墩中线测量控制,采用全站仪测量立模,同时用吊垂球的简易方法辅助测量。即在墩身下部实体段完工后,在其中心预埋一块铁板,利用纵、横方向护桩交会出墩身中心。制做一个滑轮架,缠上细钢丝绳,下吊一个10Kg的大垂球,将滑轮架安装在工作平台中心,使垂球对准墩底中心,误差控制在5mm以内。墩身高程控制每5m测一次相对标高,使模板顶面基本保持一个水平面上。遇有预埋件、进人孔洞时,随

40、时测定标高,使其控制在允许误差范围之内。 (二)钢筋加工及安装 1、钢筋加工在钢筋棚内进行,加工好的钢筋分类堆放并挂好标签,以防误用。钢筋运至现场绑扎或焊接。钢筋调直采用调直机,粗钢筋切断采用钢筋切断机; 2、钢筋下料时,技术人员应详细查看图纸,与相邻部位的有关钢筋图纸组合,与所在部位的外形尺寸对照,将结构中钢筋型号、数量和间距等列表并下达详细交底,以免下料错误。 3、钢筋绑扎完后,及时按图纸数量及尺寸安装就位各种预埋件; 4、对有弯钩弯起的钢筋,应按有关公式计算出下料长度,并在钢筋上画出标记。加工钢筋前清除钢筋上的污锈并调直。受力钢筋制作及弯钩应该符合设计要求,具体见受力主钢筋制作及弯钩形状

41、表。受力主钢筋制作及弯钩形状表弯曲部位弯曲角度钢筋种类弯曲直径平直部位长度备注 末端 弯钩180I2.5dd为钢筋直径135HBR335825 4d5d90HBR335825 4d5d中间弯钩90以下各类d 5、质量检查与控制 (1)加工钢筋的允许偏差表项目允许偏差()受力钢筋顺长度方向加工后长度10受力钢筋各部分长度20箍筋、螺旋筋各部分尺寸 (2)焊接网及焊接骨架的允许偏差表项目允许偏差()项目允许偏差 (mm)网的长、宽10骨架的宽高网眼的尺寸10骨架的长10网眼的对角线偏差15箍筋间距10 (3)钢筋位置允许偏差表项目检 查 项 目允许偏差1受力钢筋间距(mm)两排以上排距5基础、墩台

42、、柱、系梁202箍筋、横向水平钢筋、螺旋筋间距(mm) 103钢筋骨架尺寸(mm)长10宽、高或直径54保护层厚度(mm)柱、梁、拱肋5基础、锚碇、墩台、系梁10 6、采用电渣压力焊焊接方式连接时接头处钢筋轴线的偏移不得超过01倍直径,同时不得大于2mm。接头处弯折不得大于4。接头焊包均匀,不得有裂纹,钢筋表面无明显烧伤等缺陷。(三)模板安装 1、空心墩内模及外模均采用整体钢模,螺栓拼装连接。模板拼装时,严格按图纸尺寸作业,垂直度、轴线偏差、标高、模板接缝错台等均应满足施工规范要求。模板中的所有接缝基本位于同一水平或垂直平面上,确保接缝紧密、不漏浆,符合结构尺寸、线型及外形的要求。整体式模板允

43、许偏差序号项目允许偏差(mm)检验频率 (每个部位)检验方法1节间错台34用尺量2表面平整度34用2米直尺检验3垂直度0.3%H且不大于202用垂线检查4模内尺寸+5 -103用尺量,长、宽、高各测1点5顶面高程+10 -104用水准仪测量6相邻墩、台柱间距(mm)+20 -201用尺量7轴线位移102用全站仪测量纵横各测1点8支撑面标高+2 -51用水准仪测量9预埋件位置31用尺量平面高差2用水准仪测量10预留孔洞位置151用尺量高程10用水准仪测量 2、模板安装注意事项 (1)安装模板前首先刷好脱模剂,并检查模板是否变形; (2)模板安装完毕后,应对其平面位置,顶部标高,节点连接及纵横向稳

44、定性进行检查,签认后方可进行浇注混凝土,浇注时发现模板有超过允许偏差变形值的可能时,应及时纠正; 安装完毕后应报给技术员进行自检,自检合格后再报监理工程师检查,监理工程师检查通过后方可进行下一步施工。 3、钢筋保护层厚度控制 (1)严格按照图纸及规范要求安装垫块,保证保护层厚度; (2)确保垫块的厚度和强度; (3)做好班组的技术交底,对垫块的使用提出明确的要求; (4)在浇筑混凝土时避免振捣器碰撞垫块而使垫块受到损坏或移位; (5)在施工过程中要随时进行检查,缺失的垫块及时补上。 (四)砼浇筑 1、浇筑混凝土前,应对支架、模板、钢筋和预埋件进行检查并做好记录,符合设计要求后方可浇筑。模板内的杂物、积水和钢筋上的污垢应清理干净。模板如有缝隙,应填塞严密。模板内要刷脱模剂,浇筑前,试验员做混凝土塌落度等各项性能指标的检测;混凝土分层浇筑厚度振捣方法浇筑层厚度(mm)用插入式振捣器300用附着式振捣器300用表面振动器无筋或配筋稀疏时250配筋较密时250人工捣实无筋或配筋稀疏时200配筋较密时150 2、使用插入式振捣器时,移动间距不超过振捣器作用半径的1.5倍

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