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某高层办公楼由于使用要求,在第十层和第十一层设计了两层通长的现浇混凝土挑廊,悬挑宽度为1.8m,总长度为37.9m。连同十一层通廊的顶板,共有3层现浇挑廊板和2层现浇挑廊栏板。第一层挑廊底标高为34.2m,每层层高为3.6m(图1)。为解决现浇混凝土的支模及装修施工问题,我们作了方案对比:若采用钢管外架子,必须从地面一直搭设到建筑的顶部,而且要用三排架子,既占去了相当宽的地面宽度,又须长时间占用大量的钢管架子。对于这样高的结构工程用的架子,其稳定性是一突出问题,此外,还会影响塔吊安装。采用悬
Due to usage requirements, a high-rise office building has designed a two-story long-span cast-in-place concrete shelter on the tenth and tenth floors with a cantilever width of 1.8m and a total length of 37.9m. Together with the ceiling of the 11-story corridor, there are 3 cast-in-spot concrete panels and 2 cast-in-place canopy panels. The base height of the first floor is 34.2m, and the height of each floor is 3.6m (Figure 1). In order to solve the problem of mold and decoration construction of cast-in-place concrete, we made a program comparison: if the steel outer frame is used, it must be erected from the ground to the top of the building, and three rows of shelves are used, which takes up a rather wide floor Width, but also take up a lot of steel pipe shelf. For such a high-strength shelf, its stability is an outstanding problem, and it also affects the installation of tower cranes. Using suspension