1、xx省xx至xx高速公路第十三合同段毛连湾高架桥（K80+640）系梁施工技术交底墩号桩顶（系梁顶）标高系梁高（m）锁口标高设计桩底标高桩长（锁口到设计桩底）（m）0-078.2040-178.2040-278.4290-378.4291-01.668.1001-11.668.1001-268.1001-368.1002-01.663.1002-11.663.1002-284.6001.684.97263.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.201192、.26422.62720.23622.80220.45526.32624.0262-384.6001.684.86363.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0263-085.6001.686.13566.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.140193、.18319.20119.26422.62720.23622.80220.45526.32624.0263-185.6001.685.54166.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0263-284.9001.685.44166.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.164194、.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0263-384.9001.685.12566.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0264-086.3001.687.80866.30021.87221.76320.03519.44119.34119.02521.50819.74119.820195、.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0264-186.3001.686.04166.30021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0264-285.8001.686.12066.30021.87221.76320.03519.44119.34119.02521.508196、.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0264-385.8001.685.83666.30021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0265-086.2001.687.86466.70021.87221.76320.03519.44119.341197、.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0265-186.2001.686.00566.70021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0265-284.7001.685.84066.70021.87221.76320.035198、.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0265-384.7001.685.88366.70021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0266-089.7001.689.90170.70021.872219、.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0266-189.7001.689.96470.70021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0266-285.7001.688.3276510、.70021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0266-385.7001.685.93665.70021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0267-091.1011、01.692.90270.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0267-191.1001.690.55570.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.3262412、.0267-288.1001.690.42664.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.80220.45526.32624.0267-388.1001.688.12664.10021.87221.76320.03519.44119.34119.02521.50819.74119.82019.53621.16419.30519.14019.18319.20119.26422.62720.23622.8022013、.45526.32624.026毛连湾高架桥底系梁施工技术交底毛连湾高架桥桩基已灌注24根。底系梁施工即将全面展开。为保证底系梁的施工质量。将对桥梁施工队进行如下交底。一、 工程概况毛连湾高架桥整体线性处于R=2400m的圆曲线上，底系梁分左、右幅径向布置。设计底系梁共13处。与设计代表协商1-21-3的底系梁取消，改为桩柱一体。其中，1-2作接桩处理。按桥柱尺寸施工。由于毛连湾桥系梁高程变更，今将底系梁的顶、底面高程列出。详细见表一。二、 施工工艺流程测量放线 施工石线 机械开挖基坑 人工清底 5cm石渣垫层 10#砂浆铺底浇筑 破桩头测量放样（桩中心点） 放出中心线、模板安装边线 安装钢筋14、 安装定型模板 检查验收钢筋、模板 浇筑砼 拆模养护 验收三、 主要工序施工要求1、 基坑开挖本工序主要是机械施工，配合人工清底。基坑开挖一定要在底系梁边线外加宽一边最少1m，另一边最少宽1.8m，保证模板安装的工作面。在基坑周围开挖排水坑有集水井，保证基坑不积水。人工清底要低于设计高程0.1m，15#素砼封底找平。用墨斗弹出中心线、模板内边线。2、 破桩头本工序主要用风镐机将设计高程以上超高部分的砼凿除。桩头周边凿到设计高程，中间部份高出2-3cm。用水将桩基上面冲洗干净。测量放出中心点，使整个系梁的几何空间位置满足设计要求。3、 钢筋制作及安装立柱钢筋笼与桩基钢筋笼对接长度为1.6m，焊前15、绑直，按长、中、下三段单面焊，每段焊长100mm。钢筋成形呈微锥形，钢筋重叠，补强变径区的受力能力。要保证桩基中心与立柱中心在同一个点的铅垂线上。立柱必须用风缆固定。系梁钢筋按设计图纸、按数量、规格、尺寸、位置安放并焊接牢固。4、 模板安装定型系梁模板用吊车员装到位。上下用对拉螺杆拉紧，处围用斜支撑固定。5、 浇筑砼模板安装验收后，进行下道工序，浇筑砼，砼坍落度控制在90mm，砼进仓采用斜形分层，先两侧立柱孔，然后系梁中心，分层厚度50cm，振动棒插入快，拔出慢，振动范围为0.5m，严禁振动棒触振模板，施工时振捣器绝对不能触碰模板及钢筋，否则会影响砼的表面质量，最后工序为表面收光。6、 预埋件16、的安装为便于今后对桩基进行沉降观测，在桩基内侧25cm处预埋20*60cm钢筋两根，高出系梁表面1-1.5m。7、 拆模浇筑24小时后拆模，吊车、人工配合。模板拆卸过程中不准碰撞系梁。以免伤及系梁，影响表面美观。8、 砼养护用水浇进行常规养护，表面覆盖草袋或麻袋，养护时间以7天为宜。四、 检验及验收开挖基坑、钢筋绑扎安装、立柱钢筋笼、模板安装每道工序完成后都要请监理工程师进行验收，合格后才能进行下道工序的施工。浇筑砼7天后，回弹仪检测合格后方可回填。五、 质量标准基底的平面位置高程允许偏差规定如下：1. 平面周线位置不小于设计要求。2. 基底高程：土质 50mm 石质 +50mm，-200mm17、3. 轴线偏位25mm4. 检查基底处理和排水情况是否符合要求5. 检查施工和有关实验资料钢筋砼系梁质量标准：项目规定允许偏差砼强度在合格标准内轴线偏位（mm）30外形尺寸（mm）0，+30倾斜度05%顶面高程（mm）10沉淀厚度符合设计要求六、 安全措施1、 基坑深度超过1.5m应按规定设置上下坡道或爬梯汛期开挖时要放缓边坡作为排水措施。2、 加强现场施工管理，施工现场工作人员必须戴好安全帽及其他安全防护用品。3、 基坑周围必须设置围栏，一般加高0.8m的围护栏，挖出的土方运离基坑。机动车通行不得危及坑壁的安全，以防坍塌。4、 施工现场电工须持证上岗。5、 施工地段设置各种警告标志，夜间应有18、良好的照明设施，车辆应限速行驶。6、 严禁非驾驶员开车或试车，严禁驾驶员酒后驾车，施工机械由专人操作。7、 专职安全员除正常在工地检查外，应重点对新工序提出安全注意事项，并配合现场技术员做好安全技术交底。七、 环保措施8、 施工现场应制定洒水防尘措施，指定专人负责及时清除废渣。对弃土污水不得向河流和施工线外直接倾倒。9、 施工机械的废油废水，应采取有效措施处理，不得超标排放污染河流和水源。10、 车辆载重要适中，不得超限。车身及轮胎应用水冲洗干净，不得污染道路。对洒落道路的废渣要及时清除。11、 施工设备要经质检部门检验，车辆尾气不得超标。12、 夜间施工应采取措施控制噪音，防止扰民。交底人签字/日期：接受交底人签字/日期：监理工程师签字/日期：