Construction Drawing Deepening Design Method of Curved Surface Steel Box Bridge

Abstract

The invention discloses a construction drawing deepening design method of a curved steel box bridge, which can provide a curved surface development deepening drawing for cutting materials in a workshop. By calculating the theoretical elevation and pre-camber of each point on the surface in the road design diagram, the lofting elevation of the point is obtained, and the projection plane coordinates of each point obtained by using the drawing software are added to obtain the three-dimensional lofting of each point coordinates, generate a spline curve and draw a curved surface expansion diagram, and mark the expansion diagram to obtain the actual workshop blanking size. The invention solves the problem of the development of the curved surface of the steel box bridge, and the expansion accuracy is controllable, reducing the material loss of the cut-to-length material; The measured elevation of the curved steel box bridge after installation is correct, and the plane curvature is consistent with the design drawing.

Description

technical field [0001] The invention relates to the field of design of steel box bridges, in particular to a construction drawing deepening design method of curved steel box bridges. Background technique [0002] With the rapid development of municipal road bridges and highway bridges, steel box bridges are being used more and more widely due to their characteristics of light weight, large span, fast construction, and little impact on existing traffic. Steel box bridges have also developed from ordinary linear steel box bridges to curved steel box bridges, and now steel box bridges with characteristics such as vertical curves, flat curves, height gradients, width gradients, and transverse slope gradients have been designed. The detailed design method of steel box bridges is only applicable to straight steel box bridges, and cannot effectively express the surface determined by various curves in curved steel box bridges, and the detailed drawings that have not been expanded ca...

AI Technical Summary

Problems solved by technology

Steel box bridges have also developed from ordinary linear steel box bridges to curved steel box bridges, and now steel box bridges with characteristics such as vertical curves, flat curves, height gradients, width gradients, and transverse slope gradients have been designed. The detailed design method of steel box bridges is only applicable to straight steel box bridges, and cannot effectively express the surface determined by various curves in curved steel box bridges, and the detailed drawings without expansion cannot be used for workshop blanking

[0003] The patent application with the patent number CN201610273819.4 discloses a method for detailed design of aluminum alloy formwork based on BIM. The technical solution disclosed in this method can improve the accuracy and efficiency of the detailed design of aluminum Detailed design of steel box bridges with vertical curves, horizontal curves, height gradients, and transverse slope gradients

Images