Abstract: Currently, the construction workers in the aluminum formwork industry mainly assemble aluminum formwork according to the two-dimensional installation and construction drawings. In view of the large number and numerous types of aluminum templates, the large workload of marking the template parts and the chaotic layout, the present study focused on the automatic labeling method of aluminum formwork construction drawing. Firstly, the aluminum template and the annotation information model are established. The part matching information search method is proposed to find the parts that match the fittings. The method of dividing the parts space level is proposed to determine the position of the parts in the space. The parallel display method of the label information is presented to calculate the offset angle of the annotation. Finally the automatic text labeling and layout method is proposed to achieve automatic labeling of aluminum template installation and construction drawings. The example analysis shows that the method greatly reduces the workload of the aluminum formwork construction drawing, improves the design efficiency and the drawing quality, and has been put to production practice.

Key words: aluminum formwork, installation and construction drawings, information model, automatic labeling, layout optimization