Constructing method for arch bridge using spliced precast segment

摘要

The present invention relates to a construction method for an arch bridge using a precast segment. According to the present invention, the construction method for an arch bridge using the precast segment includes: a first step of separating a pair of main segment blocks including first and second segments at intervals in a bridge direction; a second step of connecting the main segment blocks by a connection segment; a third step of completing a first row arch bridge by separating the first and second segments of the outside, which is not connected to the connection segment, from the main segment block; a fourth step and a fifth step of locating a foundation and a first auxiliary segment block and a second auxiliary segment block, including the first segment and the second segment, in a second row parallel with a first row; a sixth step of individually binding the first segment and the second segment of the first row and the second row by a binding unit; a seventh step of completing a second row arch bridge by connecting the first segment and the second segment positioned in the second row by using the connection segment; and an eighth step of completing the arch bridge of the multiple rows by repeating the fourth step to the seventh step. According to the present invention, the construction method for an arch bridge using the precast segment can fundamentally prevent danger of falling by using the main segment block which does not have danger of the falling by having the first segment and the second segment of a semi-arch shape, which are symmetric to each other. Specifically, the construction method for an arch bridge using the precast segment prevents falling by using the segment to be used as a temporary structure, and, therefore, the temporary structure such as a temporary bent and a bearing pile for supporting the segment does not need to be installed.