Embedded intelligent aggregate self-sensing connector and connecting system

By using embedded intelligent aggregate self-sensing connectors, and combining piezoelectric intelligent aggregates with high-strength concrete, the problem of long-term and accurate monitoring of connector damage status in steel-concrete composite structures has been solved, achieving efficient performance monitoring of connectors.

CN118029618BActive Publication Date: 2026-09-04TONGJI UNIV
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Patent Information

Application Number
CN202410169473.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-02-06
Publication Date
2026-09-04
Estimated Expiration
2044-02-06

AI Technical Summary

Technical Problem

Existing technologies are insufficient for long-term and accurate monitoring of the damage status of connectors in steel-concrete composite structures. Traditional monitoring methods are easily affected by the external environment and have low accuracy.

Method used

An embedded intelligent aggregate self-sensing connector is adopted, consisting of a steel pipe and high-strength concrete filling. The piezoelectric intelligent aggregate is sealed inside the steel pipe, and the stress or strain state of the connector is directly monitored through the piezoelectric intelligent aggregate. Combined with the steel pipe and high-strength concrete, the shear bearing capacity and durability are improved.

Benefits of technology

It enables long-term, accurate monitoring of connectors, with strong shear and pull-out resistance, high monitoring efficiency and accuracy, good durability, and isolation from external environmental interference.

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Abstract

The application relates to a self-sensing connecting piece with embedded intelligent aggregate and a connecting system, the connecting piece comprising a steel pipe (1), high-strength concrete (2) and piezoelectric intelligent aggregate (3); the high-strength concrete (2) is arranged in the steel pipe (1), and the piezoelectric intelligent aggregate (3) is arranged in the high-strength concrete (2); the connecting system comprises the self-sensing connecting piece with embedded intelligent aggregate, further comprises a first component and a second component, and the self-sensing connecting piece with embedded intelligent aggregate is arranged in the first component and connected with the second component. Compared with the prior art, the application provides the connecting piece with sufficient tensile bearing capacity and shearing bearing capacity, which can self-sense damage, and long-term and accurate monitoring of the performance of the connecting piece can be achieved.
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