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青岛铁路分局贵州路高层住宅楼,地上35层,地下2层,总高度109m,钢筋混凝土剪力墙结构,箱形基础。施工至第25层时进入冬季,在80多m的高空上,寒风凛冽,加之楼板厚度只有100mm,且表面系数较大,混凝土的抗冻措施成了施工质量的关键。此外,还要保证一层1500m2,4d/层的施工速度。除选用优良的防冻剂外,我们采取了“外围上盖内加热”的立体保温措施,取得了很好的养护效果。具体作法如下。
Qingdao Railway Branch Guizhou Road high-rise residential buildings, 35 floors above ground, 2 underground floors, the total height of 109m, reinforced concrete shear wall structure, box-shaped foundation. Construction into the 25th floor into the winter, more than 80 m in the air, cold and windy, combined with the floor thickness of only 100mm, and the larger surface coefficient of concrete antifreeze measures has become the key to construction quality. In addition, but also to ensure that a layer of 1500m2, 4d / layer construction speed. In addition to the selection of excellent antifreeze, we have taken the “outer cover heating” three-dimensional insulation measures, and achieved good conservation effect. Specific practices are as follows.