Bridge expansion joint intelligent monitoring device based on internal component sliding

By designing an intelligent monitoring device for bridge expansion joints based on the sliding of internal components, and using changes in the level of conductive liquid to monitor the relative displacement of bridge expansion joints, the problem of the inability to simultaneously monitor longitudinal and vertical displacements in existing technologies has been solved, achieving real-time alarm and safety assurance.

CN117889737BActive Publication Date: 2026-07-24ZHONG JIAO YI GONG JU QIAO SUI GONG CHENG YOU XIAN GONG SI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONG JIAO YI GONG JU QIAO SUI GONG CHENG YOU XIAN GONG SI
Filing Date
2024-01-18
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies cannot simultaneously perform intelligent monitoring and early warning of the relative displacement of bridge expansion joints in both the longitudinal and vertical directions, leading to damage to the bridge structure.

Method used

Design an intelligent monitoring device for bridge expansion joints based on the sliding of internal components. By setting first and second alarm components, the device uses changes in the liquid level of conductive liquid to monitor the longitudinal and vertical relative displacement of the bridge expansion joints and provides real-time alarms when abnormalities occur.

Benefits of technology

It enables intelligent monitoring of the longitudinal and vertical relative displacement of bridge expansion joints, providing timely alarms and ensuring the safety of bridge use.

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Abstract

The application provides a bridge expansion joint intelligent monitoring device based on internal component sliding, which comprises a left expansion joint connecting piece, a right expansion joint connecting piece, a transverse movable component, a first hollow container, an L-shaped hollow pipe, a second hollow container, a first connecting piece, a second connecting piece, a hollow cube, a left piston block, a right piston block, an open column body and a battery; a first alarm component, a second alarm component, a guide pipe, an intelligent pressure sensing elastomer foam material and a electric signal receiving device. Based on the above structures, position relations and connection relations, the first alarm component and the second alarm component are arranged, the intelligent monitoring of the relative displacement values of the bridge expansion joint in the bridge direction and the vertical direction is realized, and real-time alarm can be realized when the above alarm components monitor the abnormality, so that the use safety of the bridge expansion joint is ensured.
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