十四、冬期施工方案.doc
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3.施工部署
根據現場場地及施工安排，基槽開挖及邊坡護壁于11月上旬結束，下一步(冬施)將進行墊層施工及基礎施工。
3.1 施工準備
3.1.1 冬季施工時間：日平均氣溫連續5天低于5℃或11月15日，為冬施開始日期；日平均氣溫連續5天高于5℃或3月15日，為冬施工結束日期。現場應于11月初即開始對大氣進行測溫，上述兩個條件有一個達到即確定為冬施的起、止日期。
3.1.2 根據目前的施工情況，熟悉掌握各部位施工方法，合理安排施工進度，保證把各種費用降到最低點。
3.1.3 通過計算并結合工程特點，根據初冬(11月15日一12月15日)和嚴冬(12月15日一次年2月底以大氣溫度不低于—10C為標準)各時期的氣溫，選用合理的添加劑和保溫措施。
3.2 現場準備
3.2.1 根據施工進度計劃，材料部門提前組織有關機具、外加劑和保溫供暖設備、材料的進場。
3.2.2 對各種加熱的設備、保溫材料仔細檢查其安全可靠性。
3.2.3 工地臨時供水管道做好保溫防凍工作。
3. Construction of the deployment
Site and construction of the arrangement according to the site, excavation and foundation trench slope Wall in November ended early, the next step (in winter) will be cushion construction and foundation construction.
3.1 Construction of preparation
3.1.1 construction in winter time: daily average temperature below 5 ℃ for 5 days, or November 15 for winter construction start date; daily average temperature above 5 ℃ for 5 days or 15 March, the end date of construction for the winter . Site should be started early in November that the atmosphere temperature, the above two conditions have a reach that is identified as starting in winter, only the date.
3.1.2 Under the current construction of the mastery of each part of the construction methods, construction progress and reasonable arrangements to ensure that the various expenses to a minimum.
3.1.3 by calculation and engineering characteristics, according to early winter (Nov. 15 1 Dec. 15) and winter (December 15 by the end of February to the first years of atmospheric temperature not lower than-10C as standard) the period of the temperature, reasonable use of additives and thermal insulation measures.
3.2 site preparation
3.2.1 According to the construction schedule, materials, organization of department equipment in advance, additives, and thermal heating equipment, materials, approach.
3.2.2 on a variety of heating equipment, insulation materials, double-check their safety and reliability.
3.2.3 temporary water supply pipeline construction site work well frost insulation.