Abstract:The underground pipeline line of the drainage shield is dominated by the alignment of the road, and in most cases it is a small radius shield pipe. The drainage shield tunnel is usually designed as a universal double-sided wedge lining ring. The smaller axis ring width and larger wedge amount are used to meet the line fitting requirements of small radius. The width of the general wedge ring segment block ring is mainly affected by the width of the axis ring of the segment ring, the amount of wedge shape and the size of the joint angle. In order to analyze the influences of these factors, according to the relationship between the segment structure of the shield tunnel and its line, the approximate calculation formula of the wedge amount and the width of the segment ring of the general wedge segment ring is derived, and the correctness of the formula is verified by the BIM cutting solid model, which is used for the reference of similar projects.
