Research On Inspection And Reinforcement Theory Of Hollow Slab Simply Supported Girder Bridge

With the passage of time and the development of the times,most of the bridge engineering in China have entered the middle and late of normal service life,and some even have various diseases and defects,and the increasing traffic volume and vehicle load.Increased,many bridges have been difficult to meet the requirements of contemporary transportation.If all the bridges of these defects and diseases are demolished and rebuilt,it may cost a lot of money,which is neither economic nor reasonable.Therefore,it is of great engineering significance to conduct research on the Inspection and reinforcement technology of bridges.The main content of this paper is:1)Analyzed the diseases and defects of concrete simply supported girder bridges,introduced some types and causes of diseases caused by concrete and steel bars,and discussed the influencing factors of these diseases;2)Explain the contents of concrete simply supported beam bridge inspection,and some techniques and methods in bridge inspection process,including bridge deck,superstructure,support and concrete performance testing content and method.The detailed process of the load(static and dynamic load)test of the bridge and the post-evaluation are analyzed in detail;3)Analyze the purpose,significance and common reinforcement theory methods of bridge reinforcement,and introduce some methods of reinforcement treatment of upper and lower structures of bridges,the advantages and disadvantages of corresponding reinforcement techniques,the scope of application and the reinforcement The evaluation was analyzed;4)Taking an actual concrete hollow slab simply supported girder bridge project as the object,the dynamic and static load test of the bridge is carried out,the specificmethod of the test process is analyzed in detail,the processing and evaluation of the test results are based on the theoretical calculation and the static and dynamic load tests.Such as the comprehensive determination of the bridge load design and operational requirements.The calculation of the load-bearing capacity limit state under the most unfavorable section and the normal use limit state are carried out.The results show that the bridge meets the specification requirements.