1. Monitoring Background

Modern large-scale bridge is an important node of the main traffic road, which has a great influence on the development of transportation. In the long-term use of the bridge, due to environmental erosion, material aging and increasing traffic volume and the increasing number of heavy vehicles and overweight vehicles crossing the bridge, the bridge structural damage and functional degradation are caused. As a result, the ability to resist natural disasters and even normal environmental effects is reduced, leading to disasters and accidents in extreme cases, causing heavy casualties and property losses. Automatic monitoring and diagnosis of bridge structure performance, timely damage assessment and safety warning have become the inevitable requirements of future bridge construction.

2. System Overview

Based on the Internet of Things and big data technology, the bridge health automatic monitoring system carries out long-term automatic online monitoring of the bridge structure, stores the monitoring data in the cloud platform, grasps the bridge health status in real time, and carries out damage assessment and safety warning in time. It provides a reference for the maintenance of the bridge, and provides a guarantee for the healthy operation of the bridge.

Technical Code for Structural Monitoring of Buildings and Bridges (GB 50982-2014);

Specification for Maintenance of Highway Bridges and Culverts (JTG H11-2004);

Evaluation Standard for Technical Condition of Highway Bridges (JTG/T H21-2011);

Standard for Quality Inspection and Evaluation of Highway Engineering (JTG F80/1-2004);

Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts (JTG D62-2004);

Technical Standard for Highway Engineering (JTG B01-2003);

Standard for Quality Inspection and Evaluation of Highway Engineering (JTG F80/1-2004);

Technical Code for Safety and Precaution Engineering (GB50348-2004);

Code for Construction and Acceptance of Electrical Equipment Installation Engineering, GB50254- 96;

Code for Geotechnical Investigation (GB50021-2009);

Code for Monitoring Geotechnical Engineering (YS5229-96)

Code for Engineering Survey (GB 50026-2007)

Code for second-class leveling of national 1. (GB/T12897-2006)

Other relevant national or industrial norms and mandatory standards;

Relevant construction design drawings.

Data big screen

Customized data large screen to meet the different needs of customers, showing different data information.

real-time monitoring

24 hours uninterrupted real-time monitoring.

Data alarm

According to the different range of monitoring and control indicators, the early warning is divided into three levels for monitoring process management, and the monitoring data is compared with the three-level early warning value to determine the monitoring and early warning level of the site. And through the platform, SMS and email to notify the relevant responsible person.

Data analysis

Including comparative analysis, correlation analysis, time domain analysis, frequency domain analysis and other analysis methods.

Patrol inspection and maintenance

Make patrol inspection plan, record, repair and maintain the diseased parts.

Report generation

Users can set different report generation rules based on customized report templates and general report templates, and automatically generate their own monitoring data reports.

Security Assessment

Combined with the inspection record data, monitoring data and detection data, the weight of different parts of the structure is scored, and finally the overall safety score of the structure is obtained.