A Simulator for Road Construction Equipment
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Summary
This paper introduces SimuCIRC, a simulation software tool developed by the Laboratoire Central des Ponts et Chaussees (LCPC) to support the transition toward "computer integrated road construction." The research is motivated by the emergence of real-time positioning systems, which bridge the gap between highly computerized design phases and traditional, manual execution on construction sites. By integrating positioning data with Computer Aided Design (CAD) models, the authors aim to create a closed-loop system where design, execution, and control share a unified geometric database, thereby reducing transmission errors and enabling automatic equipment guidance. The simulator is built on the MATLAB-SIMULINK environment, chosen for its ability to solve temporal differential equations and model automatic control systems. The core methodology decomposes construction machinery, specifically a floating screed paver, into two operational parts: a tractor and a working unit (tool). The software models the tractor’s kinematics on a tangent plane using Frenet reference frames and simulates the tool’s movement relative to the tractor. It incorporates models for localization systems, support surface defects (generated based on tolerance levels and roughness analyzers), and target surfaces derived from CAD projects. The system supports both manual operator control via a graphical interface and automatic control using closed-loop controllers for steering and elevation. Experimental results demonstrate the simulator’s effectiveness in validating automatic control strategies. When automatic steering control is engaged, the tractor trajectory aligns precisely with the project axis. More significantly, the simulation highlights the impact of automatic level control on the floating screed. Without automatic control, the screed follows the irregularities of the support surface, resulting in a paved layer that mirrors these defects. Conversely, when automatic control is active, the screed maintains the target elevation, effectively compensating for support surface irregularities and producing a surface that fits the design specifications perfectly. The significance of this work lies in providing a robust research environment for developing and testing computer-integrated construction methodologies before costly full-scale experiments. SimuCIRC serves as a demonstration tool for road construction companies and a development platform for industrial integration firms and robotics laboratories. The paper concludes that the simulator has successfully supported research in mobile robotics and optimal control, particularly in using GPS measurements for screed elevation. It represents a critical step toward automating road construction equipment and improving productivity and quality through digital integration.
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-06-25 |
| archive | success | canonical_url | — | — | 1 | 2026-06-26 |
| extract | success | cached | — | — | 2 | 2026-06-26 |
| clean | success | clean | — | — | 1 | 2026-06-26 |
| chunk | success | chunk | — | — | 1 | 2026-06-26 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-26 |
| enrich | success | openalex | — | — | 1 | 2026-06-26 |
| promote | success | — | — | — | 1 | 2026-06-25 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-26 |
| tag | success | vector_similarity | — | — | 6 | 2026-06-26 |
| verify | success | — | — | — | 1 | 2026-06-26 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified.
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- Methodological Resource: tool software, validation psychometrics
- Theoretical Contribution: computational model