Analysis of the importance of road and bridge inspection in bridge reinforcement

1) 

The application of road and bridge inspection technology in practice can well detect and analyze the problems of bridge defects. At the same time, it can also monitor the overall road based on the location, direction, status, duration, and damage degree of the defect. The bridge's transportation status, inspection and repair status. This is of great significance for improving the quality of road and bridge projects.

2) 

Modern inspection and supervision technology can well supervise the distribution status and damage degree of bridge defects. And use the Internet and other technologies to compare the bridge damage data with the actual damage degree, and then use the real-time monitoring system to control the overall damage of the road bridge. The application of this detection technology can not only improve the overall quality of bridge construction, but also provide effective reference data for subsequent bridge reinforcement work, which is convenient for future bridge management work.

3) 

Road and bridge inspection can also improve the overall quality assessment after bridge reinforcement. In practical applications, this technology can conduct statistics and research on road conditions, bridge defects, transportation pressure and other data on accident-prone sections, and extract valuable information from the known causes of accidents. This can provide a reference direction for subsequent bridge reinforcement, thereby avoiding the probability of similar unsafe accidents.

4)

The changes in the bridge structure can be characterized in advance. In the actual inspection process, technicians can perform multiple consecutive inspections on the existing problems and defects in each section of the road in a quantitative manner. This method can characterize the changes of the bridge on the overall time axis, and analyze and master its change laws through scientific methods. So as to help the bridge find the most suitable bridge reinforcement method, thereby effectively improving the stability of the bridge structure.

Research on application of road and bridge inspection in bridge reinforcement construction

Application in the early stage of bridge reinforcement construction

1)

In the early stage of actual bridge construction, technicians generally need to check the surrounding environmental conditions, hydrological conditions, and the degree of undulations of the roads and bridges. At the same time, the inspection and data of all road sections must be archived, the purpose of which is to ensure that the bridge can be better constructed.

2)

On this basis, technicians have to repeatedly check the surrounding natural rainfall and other factors. Try to avoid bridge construction or reinforcement of the bridge body before and after heavy rain. The purpose is to better monitor bridge transportation and quality defects, so as to improve the quality of safety assessment before construction.

Application in bridge reinforcement

1)

Based on the above statistical data, technicians should further detect and analyze the existing bridge defects and problems, so as to find the factors that affect the safety and stability of bridge construction.

2)

It is necessary to detect the defects and problems existing on the bridge reinforcement surface, and to analyze the cause of the damage to the bridge structure, so as to adopt targeted reinforcement measures.

3)

It is necessary to detect and study the reinforcement technology, construction technology, defect orientation, structural characterization and other issues in the process of bridge reinforcement. It is necessary to conduct deep internal inspection of structural integrity to maximize its reinforcement quality.

4)

It is necessary to use effective supervision and management technology to detect and analyze the data of each link of bridge reinforcement.

5)

These data are archived in order to provide a favorable reference basis for subsequent bridge reinforcement.

For example, in actual bridge inspection operations, it is found that the prestressed tendons with anti-corrosion effect have strong ductility, which can transmit the prestress to the internal position of the bridge reinforcement body. At the same time, the bearing capacity of the bridge structure can be increased to more than 40%. Therefore, the application of the monitoring technology in the road and bridge detection technology in this technology and link can not only detect the deformation or cracks of the bridge in advance, but also prevent the damage caused by the mass transportation of vehicles to the bridge. At the same time, it can also detect in advance the degree of damage to the main body of the bridge during the operation of traditional reinforcement technology.

Application in the later stage of bridge reinforcement construction

After the bridge reinforcement work is completed, the relevant departments will continue to adjust the detection methods and maintenance methods based on the above-mentioned data, and carry out real-time monitoring of the bridge surface, bridge damage, and internal structure of the bridge based on the above-mentioned reference data. Once problems such as bridge cracks, water seepage, and steel structure deformation are discovered, targeted reinforcement measures are taken to improve the overall quality of the bridge structure

Application of road and bridge inspection in actual bridge reinforcement technology and links

Application in carbon fiber sheet reinforcement technology

In actual bridge reinforcement operations, road and bridge inspections mainly use relevant inspection equipment to detect weaker areas in the concrete structure, so as to find quality problems and potential hidden dangers on the bridge. As a new type of reinforcement technology, carbon fiber reinforcement technology mainly uses the reinforcement of steel bars to paste the bottom of the bridge to stabilize the main structure of the bridge. On the one hand, the application of road and bridge inspection technology in its links can improve the physical mechanics and inspection effects of concrete materials, and on the other hand, it can also improve the load-bearing capacity and structural integrity of the bridge.

Through the test data, it is found that the application of detection technology can make the stress resistance of bridge reinforcement and the tensile capacity of the bridge structure more than 10 times that of traditional steel materials. At the same time, it can also detect the corrosion resistance and acid and alkali resistance of the bridge, and improve the stability of the bridge body by reducing the corrosion resistance of concrete, lime and other materials. This technology can well avoid the secondary reinforcement and maintenance of the defective part of the bridge after the completion of the construction. In response to the appeal phenomenon, when testing the road section, it is necessary to focus on testing the bridge's compressive performance, corrosion resistance and stability. In addition, infrared detection technology should be used to detect the road conditions of the relevant sections of the secondary reinforcement and repair, so as to improve the overall quality of the bridge.

External prestress reinforcement technology

The external prestressed reinforcement technology has strong corrosion resistance, so it is often applied to the external area of the bridge structure.

(1) In the actual bridge reinforcement work, it is found that the anti-corrosion prestressed tendons have strong ductility and can transmit the prestress to the internal position of the bridge reinforcement body. It can also increase the bearing capacity of the bridge body structure to more than 40%.

(2) The technology can also detect the deformation or cracks of the bridge in advance, which can reduce the impact of large-scale transportation vehicles on the bridge.

(3) This technology can also effectively reduce the damage of traditional technology to the bridge during the reinforcement process, and has a certain era and front-end nature. Therefore, at this stage, many large-scale bridge construction units in my country adopt this technology as temporary reinforcement.