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1、xx省xx至xx高速公路第十三合同段毛連灣高架橋（K80+640）系梁施工技術交底墩號樁頂（系梁頂）標高系梁高（m）鎖口標高設計樁底標高樁長（鎖口到設計樁底）（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毛連灣高架橋底系梁施工技術交底毛連灣高架橋樁基已灌注24根。底系梁施工即將全面展開。為保證底系梁的施工質量。將對橋梁施工隊進行如下交底。一、 工程概況毛連灣高架橋整體線性處于R=2400m的圓曲線上，底系梁分左、右幅徑向布置。設計底系梁共13處。與設計代表協商1-21-3的底系梁取消，改為樁柱一體。其中，1-2作接樁處理。按橋柱尺寸施工。由于毛連灣橋系梁高程變更，今將底系梁的頂、底面高程列出。詳細見表一。二、 施工工藝流程測量放線 施工石線 機械開挖基坑 人工清底 5cm石渣墊層 10#砂漿鋪底澆筑 破樁頭測量放樣（樁中心點） 放出中心線、模板安裝邊線 安裝鋼筋14、 安裝定型模板 檢查驗收鋼筋、模板 澆筑砼 拆模養護 驗收三、 主要工序施工要求1、 基坑開挖本工序主要是機械施工，配合人工清底。基坑開挖一定要在底系梁邊線外加寬一邊最少1m，另一邊最少寬1.8m，保證模板安裝的工作面。在基坑周圍開挖排水坑有集水井，保證基坑不積水。人工清底要低于設計高程0.1m，15#素砼封底找平。用墨斗彈出中心線、模板內邊線。2、 破樁頭本工序主要用風鎬機將設計高程以上超高部分的砼鑿除。樁頭周邊鑿到設計高程，中間部份高出2-3cm。用水將樁基上面沖洗干凈。測量放出中心點，使整個系梁的幾何空間位置滿足設計要求。3、 鋼筋制作及安裝立柱鋼筋籠與樁基鋼筋籠對接長度為1.6m，焊前15、綁直，按長、中、下三段單面焊，每段焊長100mm。鋼筋成形呈微錐形，鋼筋重疊，補強變徑區的受力能力。要保證樁基中心與立柱中心在同一個點的鉛垂線上。立柱必須用風纜固定。系梁鋼筋按設計圖紙、按數量、規格、尺寸、位置安放并焊接牢固。4、 模板安裝定型系梁模板用吊車員裝到位。上下用對拉螺桿拉緊，處圍用斜支撐固定。5、 澆筑砼模板安裝驗收后，進行下道工序，澆筑砼，砼坍落度控制在90mm，砼進倉采用斜形分層，先兩側立柱孔，然后系梁中心，分層厚度50cm，振動棒插入快，拔出慢，振動范圍為0.5m，嚴禁振動棒觸振模板，施工時振搗器絕對不能觸碰模板及鋼筋，否則會影響砼的表面質量，最后工序為表面收光。6、 預埋件16、的安裝為便于今后對樁基進行沉降觀測，在樁基內側25cm處預埋20*60cm鋼筋兩根，高出系梁表面1-1.5m。7、 拆模澆筑24小時后拆模，吊車、人工配合。模板拆卸過程中不準碰撞系梁。以免傷及系梁，影響表面美觀。8、 砼養護用水澆進行常規養護，表面覆蓋草袋或麻袋，養護時間以7天為宜。四、 檢驗及驗收開挖基坑、鋼筋綁扎安裝、立柱鋼筋籠、模板安裝每道工序完成后都要請監理工程師進行驗收，合格后才能進行下道工序的施工。澆筑砼7天后，回彈儀檢測合格后方可回填。五、 質量標準基底的平面位置高程允許偏差規定如下：1. 平面周線位置不小于設計要求。2. 基底高程：土質 50mm 石質 +50mm，-200mm17、3. 軸線偏位25mm4. 檢查基底處理和排水情況是否符合要求5. 檢查施工和有關實驗資料鋼筋砼系梁質量標準：項目規定允許偏差砼強度在合格標準內軸線偏位（mm）30外形尺寸（mm）0，+30傾斜度05%頂面高程（mm）10沉淀厚度符合設計要求六、 安全措施1、 基坑深度超過1.5m應按規定設置上下坡道或爬梯汛期開挖時要放緩邊坡作為排水措施。2、 加強現場施工管理，施工現場工作人員必須戴好安全帽及其他安全防護用品。3、 基坑周圍必須設置圍欄，一般加高0.8m的圍護欄，挖出的土方運離基坑。機動車通行不得危及坑壁的安全，以防坍塌。4、 施工現場電工須持證上崗。5、 施工地段設置各種警告標志，夜間應有18、良好的照明設施，車輛應限速行駛。6、 嚴禁非駕駛員開車或試車，嚴禁駕駛員酒后駕車，施工機械由專人操作。7、 專職安全員除正常在工地檢查外，應重點對新工序提出安全注意事項，并配合現場技術員做好安全技術交底。七、 環保措施8、 施工現場應制定灑水防塵措施，指定專人負責及時清除廢渣。對棄土污水不得向河流和施工線外直接傾倒。9、 施工機械的廢油廢水，應采取有效措施處理，不得超標排放污染河流和水源。10、 車輛載重要適中，不得超限。車身及輪胎應用水沖洗干凈，不得污染道路。對灑落道路的廢渣要及時清除。11、 施工設備要經質檢部門檢驗，車輛尾氣不得超標。12、 夜間施工應采取措施控制噪音，防止擾民。交底人簽字/日期：接受交底人簽字/日期：監理工程師簽字/日期：