承台、墩台作业指导书.doc

2016 learning implement to tube main leaders topic seminar spirit counselling material 2016 learning implement to tube main leaders topic seminar spirit counselling material March 7, XI General Secretary to I province delegation participate in considered and published has important speech, on XXX province people for China revolution victory and Socialist construction made of contribution give has certainly, on I province past five years implementation focus strategy, and grasp focus industry, economic social development made of results give has certainly, Clarified the demands for development of XXX, referring to both directions, tasks and issues, teaching methods, for the current and future development in Heilongjiang province, is of great practical significance and far-reaching historical significance. March 22 to 24th, provincial held has province tube main leaders topic seminar, provincial Secretary Wang Xiankui comrade in seminar opening province do has important speech, Wang Xiankui stressed: in-depth learning acquisition General Secretary of speech, is on XXX a political account, we must put learning implement XI General Secretary important speech spirit as major political task, adapted and led economic development new normal, insisted to economic construction for Center not shake, implement implementation new development concept, weaknesses, and swagger grams short, and yangchangbuduan, Stimulate the endogenous dynamics, formation effect of EMU, firm implementation of the "five planning", the development of key industries, open Dragon River comprehensive revitalization new journey, struggling to get out of a high quality, efficient, better structure and development road of revitalization of the advantages into full play. March 29 to 30th, the Committee organized a "pipe major thematic seminar of leading cadres" prefectural comrade Jia Yumei made an important speech at the opening ceremony. Jia Shuji stressed, full district upper and lower must to effective enhanced learning publicity implement implementation XI General Secretary important speech spirit of political consciously, and thought consciously, and action consciously and mission consciously, put learning XI General Secretary and provincial Secretary Wang Xiankui speech spirit as current primary political task, to more strongly of attitude, and more powerful of measures, and more full of drive promoted forest transformation development, struggled to out of forest transformation development new, ensure as scheduled achieved full built forest society of target. Today the County for convening this Conference, is to fully implement the arrangements of the provincial, prefectural, and is a major political task. County-wide each of the party members and cadres must earnestly study, deeply understand, enter into the heart, done outside the heart, of the line armed with Jia, Secretary of spirit and mind, practice, work, below, I XX practical study Jia Shuji's important speech spirit with you. Awareness, deepen the County, General Secretary哈尔滨铁路枢纽新建哈尔滨西客站工程承台、墩台作业指导书 编制： 审核： 审批： 中铁建设集团有限公司/中铁二十局集团四公司联合体 2012年2月12日 新建哈尔滨西运客站高架桥工程承台、墩台施工作业指导书1. 适用范围西广场高架桥10#承台及墩柱。

2. 作业准备2.1内业技术准备作业指导书编制后，应在开工前组织技术人员认真学习实施性施工组织设计，阅读、审核施工图纸，澄清有关技术问题，熟悉规范和技术标准制定施工安全保证措施，提出应急预案对施工人员进行技术交底，对参加施工人员进行上岗前技术培训，考核合格后持证上岗2.2外业技术准备施工作业层中所涉及的各种外部技术数据收集修建生活房屋，配齐生活、办公设施，满足主要管理、技术人员进场生活、办公需要3. 技术要求3.1钢筋钢筋骨架在加工场集中加工，汽车运送到现场进行焊接组拼钢筋骨架外侧绑扎同级混凝土垫块，满足钢筋保护层要求；钢筋接头所在截面按规范要求错开布置经自检及监理工程师检验合格后，进行下道工序施工3.2混凝土1） 合理选择原材料，优化混凝土配合比2）混凝土浇筑的自由倾落高度不超过2m，否则采取滑槽、减速串筒等设备，使混凝土在规定降落高度内均匀降落采取薄层浇灌，合理分层（30cm左右），全断面连续浇灌，一次成型，但应控制混凝土的灌筑速度，尽量减小新老混凝土的温差，提高新混凝土的抗裂强度，防止老混凝土对新混凝土过大的约束而产生断面通缝3） 加强保温、保湿养护，延缓降温速率，防止混凝土表面干裂。

养护期间，不得中断冷却水及养护用水的供应，要加强施工中的温度监测和管理，及时调整保温及养护措施保温养护措施可采取在混凝土面表面覆盖棉被并加盖一层尼龙薄膜办法进行3.3其他 优化施工组织方案，严格施工工艺，加强施工管理，从原材料的选择，混凝土的拌制、浇注，到承台混凝土灌筑结束后的养护等各项工序都要有专人负责，层层严格把关，严肃施工纪律，加强质量意识发现问题及时上报处理4. 工艺流程测设基坑平面位置、标高挖掘机开挖凿除桩头检测桩基基底检测及处理绑扎钢筋安装模板灌筑混凝土与墩台身接缝处理基坑防护制作混凝土试件降排水混凝土拌制、输送 承台施工工艺流程图墩柱施工工艺流程图墩身平面放样基础顶凿毛模板底垫层辅助脚手搭设墩身钢筋绑扎墩身模板安装安设漏斗、串筒等混凝土浇筑混凝土养护模板拆除底垫层高度计算钢筋加工混凝土试件制作模板设计模板精加工模板试拼混凝土搅拌垂直度、平面位置检查5. 施工要求5.1施工准备在承台顶面测定桥墩的中轴线，承台顶与墩身连接处混凝土表面凿毛，用高压风冲刷干净，测设立模位置和标高整修连接钢筋，敲除钢筋表面的混凝土浆和铁锈5.2施工工艺5.2.1测量放样施工前首先对施工设计图中墩台平面坐标和标高等进行全面复核，计算无误后方可施工放样。

在实际放样中，不但需要放出承台的边线，还要对承台设计尺寸线进行外放后计算出基坑开挖线进行放样确认，以备基坑开挖后人工作业平台的需要 5.2.3基坑开挖在基坑开挖前应对地面标高进行复核，开挖过程中用水准仪时刻控制基底开挖标高，防止超挖或欠挖，如超挖，应将松动部分清除，处理方案报监理批准后方可实施基坑开挖施工应安排在雨水稀少的时间进行，防止雨水浸泡对基坑造成不利影响承台基坑采用挖掘机开挖，人工配合进行清土并确保基坑无积水，开挖后如有地下水则在基坑周围挖出凹槽并在角落挖集水坑，同时用水泵进行抽水挖至标高的土质基坑不得长期暴露，扰动或被水浸泡5.2.3桩头凿除桩头用机械凿除至桩顶设计标高以上10㎝时，采用人工凿除至设计桩顶标高，桩顶表面平整呈圆柱形，桩头用磨光机打磨两处以便进行应变检测，合格后进行承台施工桩头凿除过程中，注意保护好桩头钢筋的完好,并清理干净钢筋上的水泥浆5.2.4清理基底基坑底不得有松土，基底清完进行垫层找平施工，垫层施工应严格控。