BIM design-oriented bridge engineering line coordinate calculation method

The invention discloses a BIM design-oriented bridge engineering line coordinate calculation method, which comprises the steps of S1, establishing a BIM design model and a system database of a unifiedcoordinate system, and importing BIM design model data into the system database; S2, in the unified coordinate system, on the basis of the general calculation model of the relaxation curve, calculating a center line coordinate by using an algorithm and carrying out chain scission setting; importing model data, and solving center line coordinates of the BIM design model by applying an intersectionpoint method or a line element method; and if link breaking setting is needed, obtaining a pile-by-pile coordinate table calculated by the BIM design model, carrying out sorting, selecting pile numbers needing link breaking, and obtaining coordinate information needing link breaking. and S3, checking a calculation coordinate data result according to the BIM design model, and feeding back and exporting a calculation result