Bridge rubber bearing with built-in strain sensing testing device

By incorporating a built-in strain sensing testing device, the sensor is directly embedded in the rubber layer. Combined with automated scanning and self-cleaning technology, the data deviation and interference problems of external monitoring equipment are solved, enabling efficient and reliable monitoring of the internal strain of bridge rubber bearings.

CN122169430APending Publication Date: 2026-06-09HUNAN COMM CONSTR QUALITY SUPERVISION & TESTING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN COMM CONSTR QUALITY SUPERVISION & TESTING CO LTD
Filing Date
2026-05-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing external strain monitoring equipment for bridge rubber bearings is difficult to accurately capture the internal strain state, is easily affected by external interference, resulting in large data deviations and insufficient timeliness, and cannot truly reflect the internal stress and damage of the bearing.

Method used

The device incorporates a built-in strain sensing test unit. The sensing element is arranged axially within the rubber layer and is electrically connected or electromagnetically coupled to the interactive interface through a movable matching interface. The drive mechanism enables automated scanning. The sensing element is directly embedded inside the rubber body, avoiding the defects of external leads. It adopts an arc-shaped contact surface and non-contact coupling technology to adapt to shear deformation and integrates a self-cleaning device.

Benefits of technology

It enables direct, real-time transmission of strain data inside rubber bearings, reducing system complexity and cost, improving monitoring reliability and efficiency, adapting to bridge site environments, and reducing human error and environmental interference.

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Abstract

This application relates to a bridge rubber bearing with a built-in strain sensing testing device and its monitoring method, belonging to the field of bridge engineering technology. The bearing includes a test base, an upper connecting plate, a rubber layer, a lower connecting plate, and a strain sensor integrated inside the rubber layer and an interface on its sidewall. The core technology involves using a matching interface that can automatically move along the sidewall to electrically connect or non-contactly couple with the interface, thereby sequentially reading the strain data of the built-in sensor. This invention provides two implementation paths: a contact method, utilizing an electric contact plate with an arc-shaped contact surface for adaptive contact point offset; and a non-contact method, using an active matching module for electromagnetic coupling with a built-in passive coupler.
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