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在重型厂房中,当厂房高度和吊车起重量较大时,如采用整根预制的钢筋混凝土柱,其重量往往超过施工吊装能力。此时,通常的做法是改用钢柱,或者采用两段拼接的钢筋混凝土柱。与前者相比较,后者可以节约钢材和造价60％以上(参见表2)。可见,拼接柱在工程建设中具有重要的实际意义。拼接柱的接头型式有好多种,其中钢板套这种接头型式(图1)安装简便,拼好拼接板后,吊车即可离开,并可安装吊车梁和屋盖等上部结构,能获得连续施工的效果。本文将介绍这种接头型式的一些设计经验。
In heavy-duty workshops, when the plant height and the lifting weight of the crane are relatively large, if the entire prefabricated reinforced concrete column is used, its weight often exceeds the construction lifting capacity. At this point, the usual practice is to use steel columns, or use two sections of reinforced concrete columns. Compared with the former, the latter can save steel and cost more than 60% (see Table 2). It can be seen that the splicing columns have important practical significance in the construction of the project. There are many joint types of splicing columns, of which the joint type of steel plate sleeve (figure 1) is easy to install. After assembling the splicing plates, the crane can leave and the upper structure of the crane beam and roof can be installed to obtain continuous construction. Effect. This article will introduce some design experiences for this joint type.