Overhead Line Structure Modeling via Reusable Templates
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Solution Overview
Problem
Existing railway design software is labor-intensive and error-prone for modeling overhead line structures, particularly in creating thousands of 2D cross sections, which limits the transition to Building Information Modeling (BIM) requiring 3D models.
Innovation Solution
A flexible, reusable structure template is used to automatically generate 3D models of overhead line structures by mapping key points and applying constraints and cell mappings, reducing manual effort and enabling rapid creation of 3D models for use in BIM applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual spreadsheet-based design and 2D CAD drafting is used for overhead line structures, then the workflow is familiar and straightforward, but the process is extremely labor intensive and time consuming
Solution Approach 1:
The patent uses template-based copying where standardized overhead line structure configurations are created once and then automatically instantiated thousands of times along the reference line. The software automatically copies structural elements (masts, foundations, cantilever assemblies) and adjusts their positions based on spacing requirements, eliminating manual repetition while maintaining design consistency
Solution Approach 2:
The patent performs preliminary actions by pre-defining structure templates with all necessary geometric constraints, component relationships, and configuration parameters before the actual modeling process. These templates include pre-configured mast-foundation-cantilever assemblies with all structural relationships established in advance, ready for automatic deployment
2Manufacturing precision
If manual 2D cross-section creation is performed for each overhead line structure, then detailed documentation is produced, but the process takes weeks and is error prone
Solution Approach 1:
The system automatically generates detailed 2D cross-section drawings by copying template definitions and applying them to each structure location. The software extracts geometric data from the 3D parametric models and automatically produces elevation views and cross-sections with all necessary dimensional annotations, eliminating manual drafting while maintaining documentation quality
Solution Approach 2:
The patent replaces the mechanical manual drafting process with automated computational geometry operations. The software uses algorithmic generation to create 2D drawings from 3D parametric models, substituting human manual operations with automated computer-based geometric processing that is both faster and more consistent
3Adaptability or versatility
If 3D models are manually created for each overhead line structure, then BIM-capable deliverables are produced, but the process is impractical given the number of structures
Solution Approach 1:
The patent creates a universal parametric modeling system that can generate 3D models of overhead line structures in a BIM-compatible format. The template-based approach with standardized component definitions allows the same system to handle thousands of different structure configurations while maintaining interoperability with BIM software through standardized data exchange formats
Solution Approach 2:
The system performs preliminary action by pre-configuring all 3D model parameters, component libraries, and assembly rules in advance through template definitions. This preliminary setup enables rapid automatic generation of BIM-compatible 3D models without manual intervention during the actual modeling phase
4Extent of automation
If custom macros are used to assist 2D OLE layout creation, then some automation is achieved, but the process remains labor intensive and requires significant customization effort
Solution Approach 1:
The patent implements a universal automated modeling system that handles the complete workflow from reference line input to 3D model and 2D drawing generation. The system integrates multiple functions (geometric calculation, 3D modeling, 2D drafting, documentation generation) into a single unified platform, eliminating the need for separate custom macros and specialized software tools
Data Source
AI summary
In one or more embodiments, techniques are provided for modeling overhead line structures of electric railways that utilize a flexible, reusable structure template to automatically generate a 3D model of the overhead line structure. Each structure template includes a set of points that represent joints of the overhead line structure and components that represent elements of the overhead line structure. A feature definition of each joint and component includes properties, constraints and cell mappings. By mapping key points of reference lines for an overhead line structure to key points in an applicable structure templet for the overhead line structure, and applying the constraints and, in some cases the cell mappings, a 3D model of the overhead line structure is automatically generated. The 3D model may be a “low detail” stick representation for fast modeling, or, using the cell mappings, a “high detail” cell-based representation for very realistic modeling.