Construction drawing deepening design method for curved steel box bridge

• Main Authors: SHI ZHAOHUA, LIU CHANGWEN, LIU CHENGQUAN, GAN LIQUAN
• Format: Patent
• Language: Chinese; English
• Published: 14.09.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a construction drawing deepening design method for a curved steel box bridge, which can provide a curved surface unfolding deepening drawing for feeding in a workshop. The elevation and the pre-arch degree of each point of the curved surface in a road design drawing are calculated to obtain the setting out elevation of the point, and the projection plane coordinates of eachpoint are obtained by using a drawing software and the three-dimensional coordinates of the position are obtained. A spline curve is generated to be drawn into a curved surface unfolding diagram, andthe unfolding drawing is marked to obtain the actual feeding size in the workshop. According to the invention, the problem of unfolding the surface of the steel box bridge is solved, the precision ofthe unfolding is controllable, and the loss of the size-fixed material is reduced. The curved steel box bridge after installation is measured, the control point elevation is correct, and the plane curvature is consistent with