Intelligent prefabrication hoisting splicing method and system for large-section tunnel inverted arch reinforcement cage

By using intelligent prefabrication hoisting and splicing methods, finite element models and digital coding technology, combined with intelligent hoisting platforms and differentiated connectors, the problems of low efficiency and unstable quality in the construction of inverted arch steel reinforcement in large-section tunnels have been solved, achieving efficient and safe optimization of the entire process.

CN122287241APending Publication Date: 2026-06-26中铁十四局集团青岛工程有限公司 +2
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Patent Information

Application Number
CN202610437184.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-03
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the construction of large-section tunnels for high-speed railways, traditional inverted arch steel reinforcement construction is inefficient, labor-intensive, and has poor quality stability. It is also difficult to guarantee the accuracy of key indicators. The segmentation scheme is unreasonable, hoisting is difficult, and the connection technology is outdated, resulting in high construction progress and costs.

Method used

The method of intelligent prefabrication and hoisting is adopted. By establishing a finite element model to identify unfavorable stress areas, the modules are prefabricated in sections and assigned unique digital codes. A mobile intelligent hoisting platform is used for three-dimensional positioning and fine-tuning. After positioning, irregular bolt sleeves and snap-fit ​​connectors are used for differentiated connection.

Benefits of technology

This achieved optimization of the entire process from design to hoisting of the inverted arch reinforcement, improving construction efficiency, ensuring quality and safety, and reducing costs.

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Abstract

This invention relates to the field of tunnel engineering construction technology, specifically to an intelligent prefabrication, hoisting, and splicing method and system for the reinforcement cage of a large-section tunnel invert arch. The method includes: establishing a finite element model of the tunnel invert arch lining, analyzing the stress state of the tunnel invert arch lining, identifying unfavorable stress areas, and obtaining transverse and longitudinal slab partitioning schemes; prefabricating reinforcement cage partitioning modules in batches according to the transverse and longitudinal slab partitioning schemes; transporting the reinforcement cage partitioning modules into the tunnel, and fine-tuning their positions and guiding them into place through three-dimensional coordinate positioning and sensor feedback. The system includes: a design and management module, a factory prefabrication production line, a logistics hoisting module, and a differentiated rapid connection component library. Through the above methods, a full-process optimization method for invert arch reinforcement from design, prefabrication, transportation to hoisting and connection is achieved, significantly improving construction efficiency and reducing costs while ensuring quality and safety.
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