Cable bridge maintenance application project

The maintenance and application project of the cable bridge is a comprehensive project aimed at ensuring the safety, stability and prolonging the service life of the bridge structure. Here are some key cable bridge maintenance applications:

1. Regular inspection and maintenance of steel cables

Inspection content: Regular inspection of the cable, including checking whether there is corrosion, wear, fracture and other problems on the cable surface, as well as checking whether the tension of the cable is moderate, to avoid excessive relaxation or excessive tension.

Inspection method: Inspection can be carried out through manual inspection, using professional equipment (such as robots, drones, etc.) to ensure the comprehensiveness and accuracy of the inspection.

Maintenance measures: After a problem is found, repair measures should be taken in time, such as replacing the damaged cable and adjusting the tension of the cable to ensure the stability and reliability of the cable.

2. Maintenance of bridge floor and its supporting structure

Bridge deck maintenance: Bridge deck is often affected by weather, vehicle load and other factors, prone to damage, loosening and other problems. Therefore, it is necessary to clean, repair and protect the bridge deck regularly, such as repairing cracks and replacing damaged paving layers.

Support structure maintenance: Check and maintain the support structure of the bridge (such as bridge towers, piers, supports, etc.) to ensure its stability and safety. When necessary, reinforcement treatment is carried out to improve the overall bearing capacity of the bridge.

3. Anti-corrosion and anti-rust treatment

Anti-corrosion treatment: The steel structure of the cable bridge is susceptible to corrosion, so effective anti-corrosion measures must be taken. This includes the use of steel with good corrosion resistance, the application of anti-corrosion paint, regular rust removal and painting.

Anti-rust treatment: In addition to anti-corrosion treatment, it is also necessary to carry out anti-rust treatment on the steel structure of the bridge to extend its service life. Select suitable anti-rust materials and coatings, and handle them in accordance with the specified operating procedures.

4. Seismic reinforcement

The necessary seismic reinforcement measures must be taken for the cable bridge located in the area of frequent earthquakes. This includes increasing the stiffness and strength of the bridge, setting seismic supports, etc., to improve the seismic performance of the bridge.

5. Drainage and waterproof system maintenance

Drainage system maintenance: Regularly check whether the drainage system of the bridge is unimpeded, and timely clean the debris and silt in the drainage holes, drains and other parts to ensure that the bridge can drain normally in the rainy season.

Waterproof system maintenance: Check and maintain the waterproof system of the bridge to ensure that the waterproof layer of the bridge floor, bridge pier and other parts is intact to prevent water intrusion into the internal structure of the bridge caused by corrosion and damage.

6. Management system construction

Establish a management system: develop a detailed bridge maintenance plan and management system, and clarify the division of responsibilities and work flow. Record and archive the maintenance process and work results for later tracking and analysis.

Regular training: Provide regular training and education for maintenance personnel to improve their professional skills and quality. Ensure that they can master the skills and methods of bridge maintenance.

7. Emergency response and accident handling

Formulate emergency plans: Formulate detailed emergency plans and disposal plans for various possible emergencies (such as earthquakes, floods, traffic accidents, etc.). Ensure prompt response and effective measures in case of emergency.

Accident handling: In case of an accident or emergency, immediately start the emergency plan and deal with it in accordance with the predetermined procedure. Repair and reinforce the damaged parts in time to ensure the safe operation of the bridge.

Specific case

Taking Runyang Bridge as an example, the bridge is composed of the south branch suspension bridge and the north branch cable-stayed bridge, and the steel deck of the suspension bridge and the cable-stayed bridge have been regularly maintained and specially repaired. These projects include crack treatment, pit repair, cavitation/bulges treatment, and pavement maintenance using materials such as high-toughness cold-mixed resin RAC and ultra-high performance concrete RBPC. These measures effectively improve the performance and technical status of the steel deck of Runyang Bridge and ensure the safe and stable operation of the bridge.

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