l慈竹路桥梁施工方案(申办河道范围内施工用).doc

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1、arrangements for the cause of socialism with Chinese characteristics, and improve the clarity of the strategic position of ecological civilization construction, to mobilize the whole party and people of all ethnic groups to promote the Socialist cause with Chinese characteristics. (E) enrich and per

2、fect the partys construction overall requirements of strengthening and improving party building, the party became the Socialist cause with Chinese characteristicsStrong core of leadership of the party and the new national cause from victory to victory the fundamental guarantee. Under the new situati

3、on, ruling party faces test, the reform and opening up and developing the market economy test, the external environment is a long-term, complex, serious, spirit slothful danger danger, insufficient capacity, divorced from the masses risk, passive corruption risks more sharply in front of the party.

4、Constantly improving the partys leading and ruling level and improve the ability to resist corruption and risk, is a consolidation of the partys ruling status, achieving the Mission of power must resolve a major issue. Outline of new Constitution in part on strengthening and improving party building

5、 put forward a series of new demands, stressed the need to strengthen the partys governing capacity-building, the construction of the advanced nature and purity, promoting the partys ideological building, organizational building, a building style, anti-corruption, institutional building and improvin

6、g party construction more scientific level, learning, service and innovation of Marxism party in power. Basic requirements of party building, emphasizing the whole party with Deng Xiaoping theory and the three represents important thought and scientific view of development and the basic line of the

7、party unity, unified action further emphasizes the pragmatic, emancipate the mind, and seeking truth from facts, keep pace with the tied for second as the partys construction of the basic requirements; increased wrote respect for party members, strengthen the supervision of major leading cadres. New

8、 Constitution on party of construction General requirements full of these new content, concentrated reflected has strengthening party of ruling capacity construction, and advanced and purity construction this article mainline, reflect has party of 17 big yilai party of construction made of major the

9、ory innovation results and important practice experience, reflected has we party on Marx doctrine ruling party construction law awareness of deepening, conducive to further strengthening and improved party of construction, should party faced of test and risk, effective improve party of ruling capaci

10、ty, keep and Development Party of advanced, and purity, With the spirit of reform and innovation to promote the new great project of party building, continuously enhance the creativity, rallying power and combat effectiveness. (F) on the absorption of some of the provisions have been amended as appr

11、opriate summarizing successful experience in recent years, party building, and links up with a part master changes嘉定城北大居慈竹路(民悦街-陈家山路)新建工程嘉定城北大居慈竹路(民悦街-陈家山路)新建工程桥梁施工方案项目总工:项目经理:中铁上海工程局华海工程有限公司慈竹路新建工程项目经理部2015年7月1日of leadership, along with 500-1000 punishment. (5) significant near miss should be attem

12、pted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specifications, serial number a 1 GB3323-2005 steel fusion welded butt joints, welding engineering-Ray lighting and q

13、uality rating of 2 GB11345-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-2002 industrial pipe welding engineering code for construction and acceptance of field equipment 4 HGJ222-92 technical specification for welding of aluminium and its alloys 5 low

14、 temperature steel welding procedure 6 SH3525-2004 petrochemical JB/ T4708-2000 of welding procedure qualification for steel pressure vessels 7 JB/4709-2000 8 JB4730-2005 pressure vessel welding procedures of steel pressure vessel NDT 9 JB/T4744-2000 steel pressure vessel products mechanical propert

15、ies test of welded plate II, mechanical equipment installation engineering 1 GB150-98 2 GB50128-2005 vertical cylindrical steel pressure vessel steel welded specification for construction and acceptance of oil tank 3 JB/ T4735-1997 steel welded atmospheric pressure vessel 4 GB50231-2009 mechanical e

16、quipment installation engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for liftingnew Constitution provisions on part of the party, the partys grass-roots organizations, three cadres of

17、the party made some changes. 1, put forward new requirements for party members and cadres of the party summary and embodies the partys 17 largest party since the construction of the new experiences, and links up with a part master changes, new Constitution for party members, party officials and cadr

18、es made a number of new requirements. Article modifies the first sentence of the first to seriously study MarxismLeninism, Mao Zedong thought, Deng Xiaoping theory and the important thought of the three represents and the scientific Outlook on development. Such changes were made, to guide the broad

19、masses of party members and cadres to enhance learning and implementing the scientific concept of development of consciousness and firmness. 33rd wrote cadre increased oversight of content, emphasis on selecting cadres to adhere to in the first paragraph both ability and political integrity, to Germ

20、any for the first principle, adhere to all over the world, merit; wrote the party attaches great importance to increase supervision of cadres in the second paragraph of content. Enrich the content of this area, helps to establish the correct employment-oriented, adhere to fair employment style and i

21、mprove personnel selection public confidence, strengthening cadre supervision, and promote the healthy growth of cadres, building a contingent of cadres with high quality. Article 34th fifth write increases the partys leading cadres at all levels must have the basic content, stressed the partys lead

22、ing cadres at all levels should adhere to the principle, stressing party spirit, to conduct, for example. Enrich the content of this area, conducive to the promotion of the whole party, especially leading cadres at all levels of the Party insisted on the principle of party spirit, strengthening mora

23、l cultivation, better to play an exemplary role. 2, the new Constitution of the partys grass-roots organizations put forward new requirements add a 31st article to write a positive and good content. In recent years, according to the central deployment, party organizations and party members further c

24、reating advanced grass-roots party organizations, striving to be excellent Communist activities, significant achievements were made. Further good activities, has been strengthened under the new situation of grass-roots party building and party-building a regular work was strengthened under the new s

25、ituation of the partys advanced nature and purity of the strong hand. Zeng wrote the content, to promote a good routine of long-term, leading the partys grass-roots organizations into full play to promote development, the role of serving the masses, unite the people and promote harmony, fighting For

26、t into full play; inspire the advance of the broad masses of party members and enhance the glory and responsibility, internal motivation, give full play to the exemplary role. Second, 31st modifies the first sentence of the article to organize party members to seriously study Marxism, Leninism, Mao

27、Zedong thought, Deng桥梁施工方案项目参与单位1)工程名称:嘉定城北大居慈竹路(民悦街-陈家山路)新建工程2)建设单位:上海嘉定轨道交通建设投资有限公司3)设计单位:杭州市城建设计研究院有限公司4)监理单位:上海嘉豪建设监理有限公司5)施工单位:中铁上海工程局集团华海工程有限公司施工组织编制依据在编制施工组织设计过程中,我们依据招标文件,结合工程特点和施工能力对设计文件中涉及的各单项技术按设计、施工要求进行了细化,针对招标文件中所提出的安全、文明施工、质量和工期目标,从劳、材、机等几个方面提出了合理的组织计划和相应的保证体系。编制上述文件的主要依据包括:1、嘉定城北大居慈竹路

28、(民悦街-陈家山路)新建工程招标文件。2、嘉定城北大居慈竹路(民悦街-陈家山路)新建工程施工图设计。3、施工参照的主要技术规范见下表:主要施工技术规范表序号编号名称1DBJ08-225-97城市道路工程施工及验收规范2JGG321-90预制混凝土构件质量检验评定标准3JGJ80-91建筑施工高处作业安全技术规程4DBJ08-228-97市政桥梁工程施工及验收规范5JGJ33-2001建筑机械施工安全技术规程6JGJ46-88施工现场临时用电安全技术规范7JGJ18-84钢筋焊接及验收规范8GB50026-2007工程测量规范9JGJ107-96钢筋机械连接通用技术规程工程概况及地理位置1. 工

29、程概况嘉定城北大居慈竹路(民悦街-陈家山路)新建工程,南起民悦街,桩号K0+025,北接陈家山路,桩号K0+485,全长460m。道路横断面布置:2米(人行道)+12米(机非混合车道)+2米(人行道)=16米。道路等级:城市支路;设计行车速度:30km/h;路面设计荷载:BZZ-100型标准轴载;路段车行道宽度:3.5m;道路交叉口道最小宽度:3.25m;路面结构设计年限:10年。新建桥梁2座,蔡家村河桥跨径为10米+13米+10米,正交90;高陆河桥跨径为10米+13米+10米,正交90;桥梁下部结构为1000mm钻孔桩+盖梁,上部结构为预应力混凝土简支空心板梁。本工程验收主要依据为城市道路

30、工程施工质量验收规范(上海市标准DGJ08-118-2005)和关于加强本市市政道路设施三年整治项目质量管理的通知。2. 地理位置嘉定城北大居慈竹路(民悦街-陈家山路)新建工程位于上海市嘉定区,南起民悦街,北接陈家山路。地理位置见下图。工程地理位置图主要施工内容本工程主要施工内容包括桥梁工程、道路工程、排水工程(雨水、污水、排放口)。道路工程主要工作量见下表:序号部位项目单 位数 量备注1人行道人行道砼侧石、平缘石m18802砼平石m11213人行道M28001机动 车道SMA-13M2452AC-25M4253水泥稳定碎石M23004石灰土M1476排水工程主要工作量见下表:序号管道类型项目

31、单 位数 量备注1雨水工程D300 HDPE双壁缠绕管m232环刚度8KN/N2D600 HDPE双壁缠绕管m414环刚度8KN/N3D800 HDPE双壁缠绕管m133环刚度8KN/N4窨井个251污水工程D300 HDPE双壁缠绕管m283环刚度12.5KN/N2窨井个15本工程桥梁工程包括两座桥梁:高陆河桥与蔡家村河桥。桥梁工程主要工作量见下表:序号项目规格数 量备注1蔡家村河桥钻孔灌注桩桩基1000、桩长30m8根21000、桩长42m8根3桥台、桥墩、盖梁m3约7094预制空心板梁10m32片,约104m3513m16片,约88m36桥面铺装M3967人行道M1201高陆河桥钻孔灌注

32、桩桩基1000、桩长30m8根21000、桩长42m8根3桥台、桥墩、盖梁m3约7094预制空心板梁10m32片,约104m3513m16片,约88m36桥面铺装M3967人行道M120工程自然条件及周边环境1. 地基土的构成及场地水文地质条件拟建场地位于嘉定区城北大居,我公司将根据地质勘察报告对工程各方面进行分析,特别是下水道工程和桥梁工程。对存在的不良地质情况,进行合理的处理。2. 现状场地状况根据招标文件规划红线已获批准,征地、房屋动拆迁工作已基本完成。施工现场已基本平整(除蔡家河陈家山路段场地存在大量不明单位弃土外),道路可通至施工现场。现场大致情况见下图。桥梁施工方案(一)钻孔灌注桩

33、施工1、钻孔灌注桩主要工作量见下表:钻孔灌注桩工程量表工程部位桩径(mm)桩长(m)数量(根)蔡家村河桥10003081000458高陆河桥10003081000458合计32施工准备桩位放线埋设护筒清孔钻进、掏渣钻机就位成孔检查安放钢筋骨架桩位复测安装清孔设备泥浆净化制泥浆护筒制作修整钢筋骨架制作下导管清孔及准备工作灌注水下混凝土拆、拔护筒孔口围护基桩无损监测配置混凝土灌注标高测量测量孔深、斜度导管制作、维修钻机移位制作混凝土试件试件养护2、钻孔灌注桩施工工艺流程3、钻孔灌注桩施工方法(1)施工准备施工时,先清除设计桩位范围内场地的杂物、障碍物,平整施工场地。按文明施工管理的要求,场区经过平

34、整夯实并进行硬化处理,使机械进场顺利和场区行走、搬移方便。同时在施工中确保钻机及其它机械的稳定、安全。(2)测量放线施工准备桩位放线埋设护筒清孔钻进、掏渣钻机就位成孔检查安放钢筋骨架桩位复测安装清孔设备泥浆净化制泥浆护筒制作修整钢筋骨架制作下导管清孔及准备工作灌注水下混凝土拆、拔护筒孔口围护基桩无损监测配置混凝土灌注标高测量测量孔深、斜度导管制作、维修钻机移位制作混凝土试件试件养护依据业主提供的控制点坐标进行桩位放线,采用导线与三角测量相结合的方法建立控制网,所有控制网都要填写报验资料,经监理工程师复测,签字同意后方可使用。(3)护筒埋设钻孔开始前埋设护筒,以保证钻机沿桩位垂直方向顺利工作,同

35、时保护孔口和提高桩孔内的泥浆水头。护筒埋设与坑壁之间用粘土分层夯实,以防漏水。在护筒的上口边缘开设2个溢浆口,便于泥浆溢出流回泥浆池,进行回收和循环。(4)钻机就位钢护筒安装完毕,进行钻机就位。就位时要求保持机身平稳,钻杆中心与桩位中心重合,进行钻杆垂直度检验,使钻杆垂直度达到要求,然后再进行钻进施工。为便于计算桩长,先测定护筒顶标高。(5)泥浆护壁钻进根据地质特点,钻机在成孔时,要把好三关:进尺关、泥浆比重关、垂直度关。进尺:不同的地层要求采用不同的进尺。根据施工工程地质、水文条件,施工中密切注意各土层的变化,及时调整施工进尺。泥浆:泥浆用膨润土和添加剂人工进行调制,根据施工场地地质报告及现

36、场实际配备泥浆。灌注混凝土时的回收浆,先放入沉淀池中沉淀,测试其指标后,进行调整,达到下表钻孔桩泥浆指标表要求方可使用。灌注混凝土时的回收浆,用泵直接泵入沉淀池中,当泥浆循环使用达到废弃指标时,将泥浆泵入废浆池中,用排污车外运处理。废弃指标为:粘度45Pa.s,比重1.25 g/cm3,含砂率7%,PH12。垂直度:钻机施工区域地基应有相适应的承载力,保证钻机在钻进过程中稳定,使钻杆在钻进过程中不左右摇摆;施工中钻杆中心、钻头中心、护筒中心三者应在同一铅垂线上,及时调整钻进垂直度,并用测锤及经纬仪在相互垂直的方向上进行检测,以保证钻进的垂直度。(6)终孔验收当达到设计孔深时,自检合格后,报请监

37、理验收成孔深度、成孔垂直度及成孔直径。检验完成后,方可进行下一步施工,否则须进一步处理。(7)吊放钢筋笼主筋采用闪光对焊接长,加强箍筋采用双面搭接焊,螺旋筋和主筋连接采用电弧点焊焊接。钢筋笼在平整的加工场内,预先制作成型,其焊接质量满足规范要求,加工尺寸、位置符合设计要求。为防止钢筋笼在灌注混凝土过程中上浮,在加工钢筋笼时预先在钢筋笼底部焊接抗浮钢板。钢筋笼吊装前先进行清孔。将清水直接压入稀释孔内泥浆,将置换的泥浆排入泥浆池中,并连续测试泥浆比重,当泥浆比重小于1.25 g/cm3,清孔完毕方可吊装钢筋笼。(8)导管安装钢筋笼吊装完成后,进行混凝土浇注导管安装。采用25cm导管,导管间用丝扣联

38、结牢固,并加设密封圈。导管安装前应作水密封试验,试验压力不得低于0.3MPa。导管安装时要调整吊机吊钩位置,使导管尽量置于孔的中间,缓慢下放导管,避免碰撞钢筋笼。严禁猛起猛落。管口与孔底保持3050cm间距,确保管内混凝土畅通。 (9)混凝土灌注混凝土灌注采用导管法水下混凝土灌注。混凝土采用商品混凝土,混凝土输送罐运至施工现场。灌注前,需对孔底沉碴厚度进行测定,如沉碴厚度超过规定标准10cm时,应进行第二次清孔。混凝土运至施工现场时,混凝土从输送罐中倾倒入料斗中,再用吊机起吊料斗进行混凝土灌注。灌注首批混凝土量应使导管埋入混凝土中深度不小于1.0m,首批混凝土不得少于1.5m3。混凝土灌注必须

39、保持连续进行,以防止断桩。浇注过程中应勤量测,勤拆管,始终保持导管埋深在2.06.0m左右,最后一次拆管时要缓慢提升导管, 以免孔内因导管拆除留下的空间不能被周围砼所填充,桩体中出现空芯。施工过程中严禁将导管提出混凝土面,以免形成断桩,同时严禁将导管埋置过深,以防混凝土堵管或钢筋笼上浮。随孔内混凝土的上升,需逐节快速拆除导管,时间不宜超过15min。在灌注过程中,当导管内混凝土不满,含有空气时,后续的混凝土应徐徐灌入漏斗和导管,不得将混凝土整斗从上而下倾入管内,以免管内形成高压气囊,挤出管节的橡胶密封垫。为确保桩头混凝土质量达到设计要求,桩芯混凝土需超浇100cm,浇注过程应作好详细记录。在砼

40、灌注过程中,为防止钢筋笼上浮,开始灌注砼时放慢灌注速度;当孔内砼面进入钢筋笼100200cm后,适当提升导管减小导管埋置深度(不小于100cm),增大钢筋笼在下层砼中的埋置深度。混凝土施工过程中,要严格检测混凝土坍落度,坍落度1620cm,并按照实验规程作好试块及试验记录。灌注过程中要及时测量混凝土面高度,当确认已灌注至设计标高时,方可停止灌注,拔出导管。(二)桥台施工桥的下部结构桥台采用埋置式桥台。 1、桥台施工筹划桥台施工按照钢板桩施工基坑开挖凿除钻孔桩头垫层施工钢筋绑扎模板安装浇筑混凝土施工顺序施工。2、施工工艺流程详见下页框图。3、承台施工方法(1)破桩头、承台基坑开挖、垫层施工本工程

41、陆地上及围堰内的承台均采用明挖法施工,对于埋设较深的承台,应加强支护、缩短施工时间,尽早施工承台下素混凝土垫层,减少局部流沙的影响,防止土体沉降滑移。土方部分现场堆放,堆土离基坑边5m以上,且不影响后序施工。根据施工现场的土质条件,基坑内采用明沟排水,四周设排水沟,两角设集水井,潜水泵抽水。挖机开挖距离基底20cm后由人工挖土,整平至设计标高。基坑开挖到设计标高后,铺碎石垫层,浇注砼垫层。用风镐凿除桩顶砼至设计标高以上20cm,10cm由人工凿除,防止损坏桩头砼,并保证桩顶高出设计标高10cm伸入承台内。桩头凿除后,将垫层表面清理、吹洗干净,进行承台测量放线。(2)钢筋加工及安装 桥台施工工艺

42、流程钢筋在钢筋加工场地及钢筋棚内加工,运至现场安装。底筋按垫层上钢筋布置标志布置,采用混凝土垫块作底筋保护层;面筋绑扎前用扣件管搭设支架,控制支架标高,保证面筋位置正确,面筋钢筋调整正确后,用拉筋代替面筋撑脚;墩柱插筋一次到位,为了控制插筋位置,专门加工了用角钢制作的定位箍,定位箍布置在承台面上1m和柱顶下1m位置。(3)模板加工及支立当承台与钢板桩间隙较小时,采用普通九夹板作模板,空隙用胶泥填实;制模时用扣件管搭设支架,支架四角标好模板上口线,四角拉麻线来控制上口标高。(4)混凝土浇筑采用商品混凝土,汽车泵软管布料,分层振捣,控制承台表面平整度和标高,在墩身四周100mm范围内混凝土面高差2

43、mm,利于墩身模板安装。(5)回填土方承台浇筑完毕,待混凝土强度达到设计强度时,清除表面淤泥、杂物,并将坑内积水抽干,分层回填并夯实,夯实机具选用小型蛙式夯机。(三)盖梁施工盖梁在立柱混凝土达到强度要求后,开始支架搭设、绑扎钢筋、制作模板,浇筑混凝土。1、模板施工本工程模板采用优质九隔板10050松木楞条拼制。模型及支撑体系均进行强度及变形检算,并根据检算结果预留适当的变形量。并注意保证其稳固、可靠、不变形、不漏浆。选用亲水性的高级C系列脱模剂,不使用油性脱模剂,以保证建筑装修与结构混凝土间的粘结能力。侧模采用14带止水环的螺栓加固,螺栓横向间距60,纵向间距60,盖梁顶面采用钢管卡头加固。为

44、防止墙体混凝土在浇捣过程中产生“爬模”现象,采用紧线器连接模板与底层板上的预留钢筋,使之产生垂直向下的分力,有效地杜绝“爬模”产生。预埋件和预留孔按放线座标,精确固定在模板上,并采用钢筋固定等措施将预埋件和孔洞模板加固牢固,确保位置准确。模板安装当模板支架搭设完成经过验收之后,安装盖梁底模,之后安装盖梁钢筋和预埋铁件。待钢筋扎制完毕,预埋件安装到位后,再安装外侧墙外模板并进行固定、支撑。模板安装技术要求(1)模板组装时,应及时采用卡具或螺栓将相邻的模板连接好,防止倾倒。模板安装好之后,要立即穿好销杆、紧固螺栓。(2)模板安装前须刷光模剂(切不刷废机油之类的等),模板采用九隔板及木楞制作。(3)

45、支模操作时应提供安全可靠的立足点和临时安全防护措施,并根据混凝土的运输方式制定有针对性的安全措施。(4)模板安装时应当与钢筋的安放协调进行,有碍于绑扎钢筋的模板部分应在钢筋绑扎完成后再安装。(5)模板与脚手架之间互不联系,以免在脚手架上运存材料和因工人操作不当引起模板变形。(6)侧模板的安装,应防止模板移位和突出,并设立栏杆固定侧模,拉杆直接浇筑入混凝土,不用拔除。但拆除模板之后,拉杆处应采用高强度砂浆处理,不能让其暴露在空气中。基础模板在模板外侧设置支撑固定。(7)模板安装完毕,检查合格,尺寸准确,高程核对无误后,则可浇灌砼。砼浇筑完毕,经找平、养护七天后方可进行下一道工序的施工。2、混凝土

46、施工(1)混凝土浇筑前的准备工作混凝土采用搅拌站供应的商品混凝土,其配合比应满足现场施工的技术要求,并提前进行混凝土试配,以确定最佳配合比。混凝土配合比应提高试配要求。按照国家现行混凝土结构工程施工及验收规范、普通混凝土配合比设计规程及粉煤灰混凝土应用技术规范中的有关技术要求进行设计。严格控制水泥用量和用水量及坍落度,合理掺入掺合料,加入中高效减水剂,对砼级配做到降低水化热。将施工现场混凝土罐车的行走路线清理干净并保持畅通,混凝土罐车的停放位置应留出足够的空间,不得被占作它用。混凝土由商品混凝土站提供,现场设专职试验员检查混凝土的塌落度,浇筑时试验员必须在场。现场设一名混凝土协调人员,负责混凝土的调度工作及质量反馈,保证混凝土供应及时,不压车、不等车,混凝土的质量、数量有保证,以确保浇筑顺利进行。(2)混凝土浇筑支架、模板安装完毕,并检查牢固性、稳定性以及尺寸高程等合格后,方可浇筑商品混凝土。首先浇筑地板混凝土,浇筑底板混凝土可采用两个办法:一是每隔一定距离取下两块至三块顶面模板,将混凝土从开孔处浇筑下去;另一种方法可从侧墙处浇筑,通过振捣将混凝土挤压到底板处。由于第二种方法对于混凝土的强度控制不容易把握,建议采用第一种方法。底板混凝土初凝后开始浇筑侧墙混凝土。第一次浇筑高度为50-60cm,塌落度深度控制在

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