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封面（学校统一发） 扉页1（学校统一发） 扉页2（学校统一发） 扉页3（学校统一发） 摘 要 根据《铁路路基施工规范》规定，昼夜平均气温在0℃以下且连续15d，应按低温施工办理。混凝土施工根据《铁路混凝土工程施工技术指南》和《铁路混凝土与砌体工程施工规范》规定，当环境昼夜平均气温（最高和最低气温的平均值或当地时间6时、14时及21时室外气温的平均值）连续3天低于5℃或最低气温低于-3℃时，混凝土工程应按冬期施工规定进行施工。沧州地区冬期施工起讫日期大约在11月15日～3月15日，冬期总天数约120天。具体冬季施工时间根据观测数据确定冬季施工时间。 骨料保温度措施，在冬季施工期间优先采用加热水，如果混凝土达不到要求的出机温度，其次再考虑加热骨料的方法，根据热工计算公式计算，砂石料达到5℃即可保证混凝土的出机温度，所以粗细骨料采用保温措施为主。粗细骨料仓采用彩钢板全封闭，然后在料仓内用火炉来保持仓内的温度 关键词：***，***，***，*** ABSTRACT Graduating the design is a tender which according to the Kaiyuan community project tender document bid notice, the condition of contract, the technology standard, the blueprint and other related documents establishes. This project is a multistory building. It is a brick and concrete mixed structure.The building has six tier.The project has a total construction area of 3494.91㎡,highly 20.526m.The project total bidding price for 2722773.65 yuan. Seismic fortification category class is C, foundation design grade is C, column, beam seismic fortification intensity is four degrees, quality control of masonry structure safety grade is B, grade two. This proposal mainly includes commercial bid documents and technicai bid documents . Commercial bid documents include astablishment basis, bid for culvert, illustrated book, legal person certificate of authorization, the project manager and the technical manager resume and proof of performance, scope, resilience computation process and explanation, project construction cost determination; Technical standard including engineering, construction goal, construction organization summary, main item construction technical plan, quality objectives and quality assurance measures, project objectives and schedule assurance measures, fire safety measures, environmental protection and civilized construction measures. The engineering qu