The plane of the bridge body is mainly composed of a straight line and a tangent arc, while the elevation of the bridge body is mainly composed of multiple straight lines and multiple tangent arcs. In order to meet the ease of implementation in construction, the designer repeatedly optimized the geometric composition of the bridge body, adjusted the curve distribution of the plane and the elevation, so that the straight line segment of the plane corresponds to the curve segment of the elevation, avoiding the increase in construction difficulty due to the hyperboloid of the space.