3、路基土方施工技术交底.pdf

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1、1 预 制 梁 板 安 全 技 术 交 底 书工程名称121 省道宿迁双沟至靳桥段改建扩建工程施工单位安徽开源路桥有限责任公司施工部位上部结构预制空心板交底日期2013 年 3 月 5 日交底内容：一、工程概况我标段共有 120 片 16 米，,120 片 60 米预应力砼空心板梁，采用先张法施工。二、施工工艺及施工方案施工工艺：清理台座、涂脱模剂安放钢筋、钢绞线预应力钢筋制作搅拌混凝土安放两端锚夹具调整初应力准备锚夹具绑扎箍筋、构造钢筋张拉钢绞线安放预埋件等标定张拉机具安放侧模板模板涂刷脱模剂浇捣混凝土制作砼试块先张梁养护模板拆除施工前的准备预应力的放张清理锚夹具压试块移梁、存梁作业继续养护

2、预制梁2 一、施工准备1、制作张拉台座：对原地面进行翻晒,然后用推土机进行初步推平，回填、硬化并整平、压路机碾压密实。台座部位浇筑25cm 厚素砼，并预埋角钢。台座采用长线式张拉台座。现已完成 2 个长线式张拉台座，长108 米。、张拉装置：张拉装置由放张楔块、张拉活动横梁、YCD-2000千斤顶及 ZB4-50 电动油泵、QYCW-270 千斤顶及 ZB4-500 型油泵等组成。张拉设备首次使用前必须进行校检，千斤顶使用超过6 个月或 200次，以及在使用过程中出现不正常现象时，也要重新校准。每台千斤顶和压力表必须配套使用，且同时校准。严禁与其它千斤顶互换，压力表精度不低于 1.5 级。推算

3、出千斤顶张拉力与油表读数的关系式。标定合格后，检查活动横梁、放张砂箱、固定横梁、千斤顶等的相对位置是否符合设计要求，以及锚具夹片是否符合标准要求。、材料准备：边模和中模模板及内模采用整体钢模，由模板厂专门加工，运至现场后应检查模板是否到达设计要求，不符合要求的坚决不能使用。钢筋钢铰线在装运及储存时应严格保护，严防受到物理损害、腐蚀和污染。产品质量证书和试验合格证齐全，现场抽检应到达设计要求。砂、石子、水泥经检验符合标准要求后方可使用，砼配合比经试验到达设计要求并应经监理认可后方可使用。二、施工方法1、清理台座、涂脱模剂清除底模上覆的所有杂物，并擦拭干净，均匀涂刷脱模剂。对于底模缺损的部位及时进

4、行修补找平，以免影响浇注出的梁体底板的平整度。2、钢绞线施工预应力筋的下料：对进场的钢绞线按预应力混凝土用钢绞线GB/T5224-95 的规定作抽样检查进行试验，确定钢绞线的冷拉伸长率、钢绞线冷拉后的弹性回缩量。文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5

5、Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 Z

6、C8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9

7、K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档

8、编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4

9、P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4

10、P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS

11、10C3M5Y5E7 ZC8A1U9K7O13 钢绞线下料长度的计算：对于检验合格并经监理工程师认可的钢绞线，根据台座长度、夹具长度、穿心式千斤顶的长度、钢模板伸出端板至锚固板之间的距离、模板的厚度确定钢绞线的下料长度，用切割机或砂轮锯切断钢绞线。钢绞线的下料长度：L0=L+L1+L2式中：L0 钢绞线的下料长度，L 长线台座的长度 54 米L1 千斤顶的长度 0.3*2=0.6米L2 横梁宽度 0.54*2=1.08米L0 预应力钢绞线端部,在与工具锚接触的部位,应清除浮锈,防止张拉时打滑,如果预应力筋外表已经形成降低强度与延伸率的腐蚀坑,则不能使用,以防张拉时产生脆断飞出伤人,防止张拉锚固

12、后,降低预应力钢绞线的强度储备(安全系数).钢绞线的下料采用砂轮锯切割,砂轮锯片为增强型,以防加热降低钢绞线的机械性能,严禁用电焊机切割,否则张拉部位进入受力区,张拉时钢绞线出现大量的断丝.、钢绞线的安装就位：预应力筋的铺设应在台面上的隔离剂干燥之后进行，隔离剂要求具有良好的隔离效果，不能影响砼与钢绞线的粘接力，如钢绞线遭受污染，应使用适当的溶剂加以清刷干净。钢绞线的铺设和下料同时进行，以提高工效。把按设计的失效塑料管截好并编号，分别放在每片板梁的两端，拉伸钢绞线的同时穿上失效管。调整各相邻钢绞线的位置，根据编号使其准确就位，将其联接在两端横梁的连接器上，同时穿入预留孔内。注分丝板设在活动横梁

13、一侧，分丝板根据钢绞线型号设计打孔。文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7

14、 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1

15、U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1

16、文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:C

17、B4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6

18、X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10

19、HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O14 在铺设过程中，注意对钢绞线进行检验，如发现有局部损伤、锈蚀严重的立即预以清除，并按要求重新下料。4、锚夹具安装、钢绞线张拉锚夹具

20、安装：锚具、夹片在使用前进行外观、硬度和静载试验的检查，对不合格的产品严禁使用，安装时要求准确到位锚夹具只允许张拉前安装。锚板端口要求清理干净，如已生锈则应进行除锈；夹片要求保持清洁和良好的润滑状态，新的工具夹片第一次使用前，要求在夹片反面涂上润滑脂，以后每使用510 次，应将锚板连同夹片一同卸下，向锚板的锥形孔中重新涂上一层润滑剂，以防夹片在退楔时卡住。在施工过程中应经常检查锚板内的夹片是否有损伤，如有损伤则立即更换，以防钢绞线产生滑移飞出伤人。5、钢绞线的张拉A、张拉设备的选用、检验：张拉装置由放张楔块、张拉活动横梁、YCD-2000 千斤顶及 ZB4-50 电动油泵、QYCW-270 千

21、斤顶及 ZB4-500 型油泵等组成。张拉设备在施用前按要求进行检验标定，张拉机具派专人使用和管理，并按要求经常进行维护、定期校验，一般规定超过6 个月或使用 200 次以上及使用过程中出现不正常现象都需要进行检验。B、张拉应力控制：a、砂箱锁定：选用冲洗过的中粗砂晒干后平均分成两份，分别填满砂箱并用人工捣固密实，然后测出砂箱长度。b、张拉：以板梁中心线为轴线，采用张拉力和伸长量双控法控制，钢绞线张拉以油压表应力控制为主，张拉伸长值做校核。初始张拉应力为控制应力的10%，然后在钢铰线上做好测量标记，依次将张拉力提高到控制张拉力，及时记录数据，然后将张拉力加大到控制应力并持荷2分钟，用夹片锚固，

22、量出钢绞线的伸长值，并与理论伸长量L 比较，实际伸长值与理论伸长值的误差应控制在6%以内，否则必须查明原因并文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1

23、U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1

24、文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:C

25、B4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6

26、X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10

27、HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3

28、M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O15 采取措施加以调整，方可继续张拉。注意预应力钢铰线的实际伸

29、长量必须加上初应力 10%时推算的伸长值。张拉程序如下：010%com(划线)20%com100%com持荷 2min 锚固预应力钢绞线的实际伸长值L 计算，在初应力为10%COM时开始测量 l1，在 20%COM时测量伸长值 l2，100%COM时测量伸长值 l3。伸长值 L=l3-l2+2*(l2-l1)钢绞线理论伸长值：L=P 式中：L-钢绞线的理论伸长值P-张拉控制力 195.3KN L-钢绞线的下料长度减去千斤顶长度0.655.08 米E-钢绞线的弹性模量 1.95*105A-钢绞线的面积 140mm2 L=394mm 误差允许：L-L6%*394=24mm 2、钢筋绑扎钢筋在钢筋加

30、工厂弯曲成型，现场绑扎。在加工过程中应注意保持钢筋外表洁净，使用前将外表油渍、漆皮、鳞锈等清除干净。同时钢筋应保证平直，无局部弯折，成盘的钢筋和弯曲的钢筋均应调直。钢筋接头采用搭接焊时，宜采用双面焊，双面焊困难时，可采用单面焊，焊接作业必须保证两钢筋的轴线在同一条直线上。接头双面焊缝长度不应小于 5d，单面焊缝长度不小于10d(d为钢筋直径)。在接头长度区段内，在受拉区主钢筋焊接接头的截面面积不大于总截面面积的50%；在受压区，焊接接头不受限制。在接头长度区段内，同一根钢筋不得有两个接头接头长度区段内是指35d长度范围内,d 为钢筋直径，但不得小于500mm 。在绑扎钢筋的同时将失效管固定于设

31、计位置，并将管两端用胶带缠好封好。钢筋尺寸和位置，必须符合设计要求，并且严禁在绑扎过程中碰撞和踩踏钢铰线。自检合格后，报监理工程师检查后进行下道文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10

32、HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3

33、M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7

34、 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1

35、U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1

36、文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:C

37、B4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O16 工序。3、模板施工：

38、侧模采用整体钢模板，模板间用M16 螺栓连接。立模前，清除模板上的灰渣、杂物并涂刷模板隔离剂。立模时侧模紧靠底模两边，并用拉杆固定，上部内撑钢管，外加拉杆定位，模板连接处贴双面胶作为止浆条，防止漏浆。模板安装、拆卸等过程均由吊机配合人工完成。侧模立好后，用细线检查其顺直度，用垂球检查其垂直度，在各项检查合格，报监理工程师检查后进行下道工序。内模采用定型钢板，每节长1.8 米，模板间用 M16 螺栓连接，立模前，清除模板上的灰渣、杂物并涂刷模板隔离剂，按设计位置角度安装定位，防止模板在混凝土施工过程中震动错位。4、砼浇注砼浇注前，严格检查钢筋、预应力筋、模板、预埋件等的数量和位置，防止遗漏，砼由

39、拌和站集中拌制，采用砼运输车运输，吊机提升入模。腹板浇注要对称进行，防止腹板厚度不均匀。砼浇筑应按一定厚度、顺序、方向分层浇筑，每层厚度30cm。上下层砼浇筑应连续，两层砼浇筑的时间间隔应尽量缩短，其最大间歇时间不能超过砼的初凝时间。砼的振捣采用插入式振捣器，振捣间距不应超过振捣棒作用半径的1.5 倍，插入深度应插入下层砼5-10cm。振捣时应防止碰撞模板、钢筋、钢绞线以及其它预埋件。对于每一振捣部位，必须使该部位砼密实，以砼停止下沉、不再冒出气泡、外表平整、泛浆为准。首先浇筑底板砼，到达底板设计标高后，立即安装内模，绑扎内模定位钢筋和面板钢筋。然后对称均匀地浇筑腹板及顶板砼。腹板砼振动采用插

40、入式振捣器；顶板砼以平板式振动器振捣为主，插入式配合。混凝土初凝后对顶面进行拉毛。采用垂直于跨径方向划槽，槽深0.5-1.0 厘米，横贯板顶，每延米不少于10-15 道，严防板顶滞留油污。5、砼养护砼养护采用覆盖洒水养护。砼浇注完毕并初凝拉毛后及时用草帘子覆盖，并及时洒水，保持湿润，当砼到达规定强度后拆除内、侧模。拆模后均应及时洒水覆盖养护，一般养护时间为7d，可以根据具体情况酌文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M

41、5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7

42、ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U

43、9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文

44、档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB

45、4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X

46、4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 H

47、S10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O17 情延长或缩短。6、预应力放张当相同养护条件下的同期试块强度到达设计强度的90%或超过设计要求时，即可开始放张。放张时两砂箱要同时放砂，且保持相同的速度，直至钢绞线应力全部消除。放张后应测量梁的上拱度，并作好记录。钢绞线采用切割机切割，切割面要与梁体砼外表平齐，上述工序完成后及时封住端头。放张后对梁板进行以下观测：a.预应力板的上、下端部及其他部位是否发生裂纹；b.预应力失效措施是

48、否可靠；c.钢绞线有无滑动迹象；d.放张时的上拱度值。7、移梁封端完成后，将梁按照生产顺序编号，利用吊机将梁体吊运至存梁区存放，吊点应严格按设计要求设置，两端同时起吊，专人指挥。梁体堆放时，必须保证其支撑点位于梁体设计支撑点上，严禁梁体倒置。三、施工进度安排施工进度：预应力砼空心板梁计划于2006 年 5 月 20 开工，至 8 月底完工。详细施工进度见空心板梁施工计划(横道图)。四、质量保证措施质量是企业的信誉，是企业的生命，切实保证工程质量是我单位的根本宗旨，施工中我们将进行全面质量管理，做到好中求快，科学合理，消除一切质量隐患。1、质量管理组织机构项目经理部建立完善的质量管理机构，成立以

49、项目经理为组长，项目总工、项目副经理为副组长，各职能部门负责人和各施工队主要领导为成员的质量管理领导小组。项目经理部设质量监察部，配1 名专职质量检查工程师，负责本合同项目工程质量检查和监督；各施工队设12 名专职质量检查工程师，文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10

50、 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C3M5Y5E7 ZC8A1U9K7O1文档编码:CB4P2N6X4P10 HS10C