Structure-sensing integrated offshore wind power reinforced concrete tower tube fabricated transition connection component and monitoring method

By integrating sensors and hydraulic microchannels into the transition connection components of offshore wind turbine steel-concrete towers, and combining differential preload control of inner and outer ring screws with SMA thermal activation compensation, the problems of easy sensor damage and high maintenance costs in existing technologies are solved, achieving a structure-sensor integration effect of autonomous monitoring and autonomous compensation.

CN122129395APending Publication Date: 2026-06-02FUJIAN UNIV OF TECH
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Patent Information

Application Number
CN202610541956.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing offshore wind turbine steel-concrete tower transition connection components lack integrated sensing and actuation functions, making it impossible to achieve strain self-sensing, interface slip self-detection, and preload self-monitoring. Furthermore, existing technologies have high maintenance costs in the offshore environment, sensors are easily damaged, and a closed-loop monitoring-compensation system has not been formed.

Method used

Design a structure-sensor integrated prefabricated transition connection component for offshore wind turbine steel-concrete towers. The component integrates multiple pre-embedded strain sensors, FBG sensing channels, hydraulic microchannels, and interface displacement sensors. Through differential preload control of inner and outer ring screw groups, combined with active hydraulic compensation and semi-passive SMA thermal activation, it can autonomously maintain the stability of the preload.

Benefits of technology

It achieves structure-sensor integration, reduces operation and maintenance costs, improves connectivity and fatigue durability, enables early detection of interface degradation, and achieves second-level rapid response and long-term maintenance of preload stability through a closed-loop compensation system.

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Abstract

The invention discloses a structure-sensing integrated offshore wind power reinforced concrete tower tube assembly type transition connection component and a monitoring method. A lower flange plate and an upper flange plate are arranged on the upper portion and the lower portion of a transition connecting component body respectively, and a lower sliding decoupling interface layer and an upper sliding decoupling interface layer are arranged on the lower end face of the lower flange plate and the upper end face of the upper flange plate respectively. The inner ring screw group is used for connecting the lower flange plate and the lower concrete section ring body, and the outer ring screw group is used for connecting the upper flange plate and the upper steel tower section; the FBG sensing channel is arranged in the wall body of the transition connection member body. According to the structure-sensing integrated offshore wind power reinforced concrete tower tube assembly type transition connecting component and the monitoring method, the structure-sensing integrated offshore wind power reinforced concrete tower tube assembly type transition connecting component can serve as a force bearing structural component, and meanwhile, the strain self-sensing function, the interface sliding self-detection function, the bolt axial force self-monitoring function and the pre-tightening force active hydraulic-semi-passive SMA combined self-compensation function are integrated in the component body.
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