Pre-control of welding deformation and stress release construction method for high-altitude steel structure of chemical plant

CN122252848APending Publication Date: 2026-06-23CHINA NAT CHEM ENG NO 7 CONSTR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT CHEM ENG NO 7 CONSTR
Filing Date
2026-05-27
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve precise deformation pre-control and stress release in high-altitude steel structure welding. Traditional methods rely on experience and cannot be dynamically adjusted in real time, resulting in insufficient construction quality and safety.

Method used

By using multi-source sensing units to collect data during the welding process, dynamically calibrating the welding twin model, implementing online stress reduction in stages, and using a portable ultrasonic impact device for real-time intervention, combined with data iterative model updates, an adaptive control closed loop is formed.

Benefits of technology

It enables precise deformation control and stress release during high-altitude welding, improving construction quality and efficiency while reducing safety risks and costs.

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Abstract

The application discloses a high-altitude steel structure welding deformation pre-control and stress release construction method, belongs to the technical field of welding construction, and aims to solve the problems of low control precision of high-altitude welding deformation and stress release lag. The method arranges sensors on the structure, calibrates the current dynamic welding twin model by using the trial welding data, divides the weld, plans welding according to the model, and instantly identifies the stress concentration area as the intervention target area, and then implements online stress reduction by the following ultrasonic impact device; then, the model is iteratively updated based on the data collected in the whole process to guide the subsequent segmentation; finally, the target processing is performed on the measured residual stress exceeding area. The method is mainly used for high-altitude steel structure welding construction, and realizes the precise active control of deformation and stress.
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