Study On Underwater Structure Detection Technology And Safety Evaluation System Of Bridge

The durability of the bridge foundation is an important part of the lifeline.The geological and climatic environment of the coastal bridge is very bad,so it is important to provide the basis for the bridge maintenance work.The technology of detecting the underwater structure of bridges in our country started late,and for a long time the standard is immature and the development is relatively slow.The relevant area of research is almost in a blank state.Therefore,it is necessary to deep investigate the existing major diseases of bridge underwater structures and the current methods of detection,then research and develop practical and effective methods for bridge underwater structure disease detection and safety assessment system.Firstly,based on the deep study of the causes and damage mechanism of underwater structure disease,this paper summarizes the common diseases of underwater structure of bridge,and draws the corresponding standard for the damage degree of different diseases.Secondly,according to the previous research and practical engineering experience,this paper summarizes the types and detection methods of underwater inspection of bridges,and puts forward a new accurate and feasible underwater detection method with a bridge underwater test project.Finally,based on the analysis of the mechanism of underwater structure and the research of underwater structure,this paper establishes the evaluation model of the underwater structure safety of the bridge according to the basic characteristics of the bridge,and uses the analytic hierarchy process to determine the weight of each evaluation index.The research on the safety evaluation system of underwater structure of bridge is completed,and the steps of assessing the technical condition of bridge underwater structure are determined.In this paper,the main innovation is reflected in the proposed underwater structure of the bridge detection content and detection technology,and according to the different conditions of the disease,establish a bridge underwater structure safety assessment system using AHP method to provide practical reference for the future evaluation standard of underwater structure in our country?...