BIM parametric design method for bridge superstructures

Abstract

The invention discloses a BIM parametric design method for bridge superstructures, and relates to the field of bridge engineering design, construction and detection. The method comprises the followingsteps of: (1) extracting a space coordinate, a cross slope angle and an oblique crossing angle corresponding to a mileage stake mark corresponding to a path in a bridge range; (2) reading space coordinate point data and generating a path space curve; (3) making a bridge cross section profile; (4) carrying out space coordinate transformation, and arranging the bridge cross section profile at a path control point position; (5) adjusting a rotation angle of the cross section profile according to the cross slope angle; (6) generating the cross section profile into an entity model along the path by utilizing a lofting or lofting fusion function; (7) shearing two ends of the bridge according to the oblique crossing angle so as to complete a bridge upper major structure model; and (8) repeatingthe steps (1) to (7) according to offset distances between components such as a bridge deck system and the like and a road axis so as to generate a complete model. According to the method, the difficulty of establishing three-dimensional models of bridge special-shaped space structures is solved, and parameterization is realized by utilizing data reading and visual programming, so that the precision and efficiency are greatly improved.

Description

technical field [0001] The invention is applicable to the fields of bridge engineering design, construction and detection, and is used to build a bridge superstructure model, including: bridge superstructure main body, bridge deck system, sidewalk, curb, anti-collision pier, bridge deck hanging board, etc., to realize visualization manage. Background technique [0002] BIM (Building Information Modeling) is based on the relevant information data of the construction project as the basis of the model to establish the building model, and simulate the real information of the building through digital information simulation. It has the advantages of information completeness, information relevance, information consistency, visualization, coordination, simulation, optimization and drawing, and realizes integrated management in the entire life cycle of construction projects. BIM is a huge change in the construction engineering industry. It will gradually replace the traditional two-...

AI Technical Summary

Problems solved by technology

[0006] There are many BIM technology software providers, and different software has their own advantages. However, in terms of current actual application situation, Autodesk Revit software is the most widely used. Although Revit software has many advantages, it is not suitable for the complex spatial structure of bridge engineering Simulation is powerless. Although its Civil 3D software is a special software for road engineering, it can also be extended to bridge engineering, but it is not yet mature, and it is impossible or inconvenient for engineering and technical personnel to design 3D bridges, which seriously hinders the development of BIM technology in infrastructure engineering.

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