Study On Load Test Of Prestressed Concrete Continuous Rigid Frame Bridge

Since the reform and opening up,the construction of Bridges in China has been fruitful and has made unprecedented achievements.Highway and railway transportation,as the key industry of the country's economic development,is moving forward in an unprecedented scale.Large-span bridges have sprung up everywhere in the country,the technology tends to be complicated,the scientific and technological content is increasing,the construction is more and more difficult,marking our country has entered the ranks of the world's bridge power.The development of bridge engineering is inseparable from the progress of material science,and development of construction technology,of course,as well as the progress and development of the test,because the test is a necessary means to get experience.Firstly,this paper introduces the development of prestressed concrete rigid frame bridge at home and abroad and the development of bridge load test.Using Midas civil software simulation,adverse to obtain load test condition,unfavorable section information,and information such as the natural vibration characteristics of the bridge is calculated,which provides theoretical guidance for field prototype tests.After that,the load test theory and method are briefly described.According to the theory of load test research,including the static load test and dynamic load test.at the same time,the prototype test results were analyzed,and the universal conclusion are obtained.Finally,this paper introduces the theory of structural state inversion,and then determines the similarity between the theoretical model and the prototype.This paper selects the parameters with high sensitivity,analyzes the theoretical model and analyzes the modified model.Gaining regular value,providing support for later health monitoring and the accumulation of valuable experience for similar bridge load testing and health monitoring.