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齐齐哈尔工程一处位于冬季施工期较长的严寒地区。几年来在一些工业与民用建筑工程中进行砂垫层的冬季施工,经实践检验工程质量良好.现举工程一例,说明冬季施工砂垫层的做法. 一、工程概况 齐齐哈尔铁路南局宅北一、北二栋为五层住宅楼工程,设计1—3层为砖混结构、四层五层为加气混凝土结构,每栋建筑面积为3.519m~2。设计为毛石基础下设砂垫层一米厚,要求中砂、中密,撼砂工程量950m~3。砂垫层施工期正值一九七七年十二月,月平均气温-16℃,最低气温-29℃.
Qiqihar project is located in the winter construction of a long cold area. In recent years in some industrial and civil engineering construction of sand cushion winter construction, the practice of testing the project is of good quality .Examples of a project to illustrate the practice of winter construction of the sand cushion. First, the project Qiqihar Railway Bureau, , North Building II is a five-storey residential building project, 1-3 floors are designed as masonry concrete structures, and the fourth and fifth floors are aerated concrete structures, each with a building area of 3.519m 2. Design for the stone base under the sand cushion one meter thick, requiring sand, in the dense, shaking sand engineering volume 950m ~ 3. Sand cushion construction period coincides with December 1977, the monthly mean temperature of -16 ℃, the lowest temperature -29 ℃.