Study On The Temperature Effect Of Concrete Continuous Beam Bridge

Bridge is a very important load-bearing structure,and its load-bearing capacity is the key to ensuring the safe operation of traffic.In the daily use of the bridge,the bridge structure bears a variety of complex temperature effects.The temperature field of the bridge is affected by many factors.The geographical location of the bridge,the temperature and humidity of the surrounding environment,climate change,and solar radiation are all closely related to the temperature field of the bridge structure.Bridges are mainly affected by annual and daily temperature changes during the operation of the bridge.In addition,climate changes such as cold waves and strong cold air will also affect the changes in the temperature field.When the temperature field of the bridge structure has a sudden change,it will cause the temperature effect of the bridge structure,and the structure will produce obvious binding force.In severe cases,the structure will crack or even the bridge structure will be destroyed.Based on the existing theory and technology of bridge health monitoring,this paper focuses on the impact of temperature effects on the structure of Yezhuang Bridge,and improves the health monitoring system of Yezhuang Bridge under the effect of temperature,based on the engineering In fact,a series of problems of bridge health monitoring have been deeply and systematically studied.The main research content and research results of this article include:(1)This article first introduces the meaning and purpose of bridge health monitoring and the current research status of bridge health monitoring.By consulting a large number of documents,it summarizes some bridges that have installed health monitoring systems at home and abroad,and analyzes some of the problems existing in the health monitoring system.了Analysis.(2)Introduced the theory of time series analysis and provided a method to process a large amount of bridge health monitoring data.Through the MATLAB platform,the measured data of the bridge is processed in a time series,and then a time series model is established for analysis,and the established time series model is used to predict the data for a period of time in the future,which is an early warning for the bridge health monitoring system Provide a reliable basis.(3)Study the temperature effect in the bridge monitoring data,compare various temperature effect processing methods,process and analyze the measured data,find the relationship between the temperature and the measured data,and finally eliminate the temperature effect from the measured data to obtain the live load effect Deflection and strain generated by the bridge structure can reflect the monitoring indicators of the health of the bridge.(4)Based on the research conclusions on the impact of temperature effects on the bridge structure,establish a bridge health monitoring safety early warning system,set up yellow early warning thresholds and red early warning thresholds for monitoring indicators such as deflection and strain,to provide a reasonable monitoring range for the monitoring system and make the system more early warning Accuracy provides a strong guarantee for the safe operation of Yezhuang Bridge.