Research On Detection Method Of Bridge Flatness Based On Acceleration

Since the founding of New China,China’s transportation industry has made rapid progress,especially in the field of bridges.Through the efforts and exploration of several generations of bridge people,China’s bridge-related technology has reached the leading position in the world.While leading,problems also ensue,such as the untimeliness of bridge monitoring and detection of diseases,the lack of innovation in bridge detection technology,and the fact that bridges account for a large proportion of old bridges.The bridge deck as a bridge directly bears loads such as vehicles and crowds,and as time goes by,the inertial and shock loads caused by car vibration will also increase,which will lead to the destruction of the bridge deck structure.The smoothness of the road,as a key index to measure the quality of road service,which affects people,vehicles,and roads,can be used to evaluate the quality characteristics of the bridge deck.In the face of the current development requirements of bridge maintenance management informatization,the traditional detection method has slowly withdrawn from the historical stage,and new rapid detection technology has gradually developed.So it is important to study method of new detection.Based on the study of flatness,this paper firstly studies the flatness detection method and the corresponding indicators,from the pavement flatness to the bridge deck flatness,and then proposes a fast acceleration-based bridge deck detection method,this method It is to use Matlab Gui to write a program,to find the abnormal point of the bridge deck through the combination of video and acceleration data,to find the characteristics of the abnormal point data with Origin,and then to return the data to determine the specific location of the abnormality that may affect the flatness of the bridge deck This method saves a lot of manpower and material resources,and indirectly guarantees the safety of drivers and passengers.This article also uses the obtained acceleration to simulate the bridge deck with Matlab Simulink,and simulates the bridge deck with the obtained acceleration data.This paper also puts forward an evaluation index of bridge flatness based on acceleration,which is compared with the most popular international flatness index,which shows its feasibility.The article also analyzes the problems such as bridge head settlement,bridge deck pavement abnormalities,and bridge expansion joint abnormalities,and puts forward corresponding solutions to these problems.The above has certain reference significance for improving the flatness of the bridge deck.