What test parameters does the bridge test include?

On-line safety monitoring of bridges includes (1) geometric alignment monitoring and construction measurement, including: arch rib alignment monitoring, main girder alignment monitoring, main girder deflection monitoring, axis deviation measurement and arch frame displacement measurement. (2) Stress and strain monitoring of arch rib. (3) Stress and strain observation of steel box girder. (4) Stress and strain monitoring of the stress concentration position at the anchor end of tie bar. (5) Cable force monitoring of tie bars. Includes controlling section temperature and ambient temperature during construction. (7) Test material parameters, etc. (8) Monitoring the stability during construction. With the development of public bridges in China, there are more and more bridges. At the same time, many existing bridges are gradually entering the maintenance stage. Relevant experts believe that the bridge will enter the aging period after more than 25 years of use. According to statistics, 40% of the total number of bridges in China already belongs to this category. They are all "aging" bridges, and their number is increasing with time. Bridge managers pay more and more attention to the maintenance of bridges. In order to meet the requirements of the continuous development of highway transportation load, make full use of the existing highway bridges and make them continue to serve highway transportation safely, it is necessary to identify the bridges according to the requirements of the Technical Specification for Highway Maintenance issued by the Ministry of Communications. With the rapid development of bridges around the country, bridge construction accidents frequently ring out.