Construction Monitoring And Seismic Performance Analysis Of The Ancient Canal Bridge Of Guanchao Road

Over the past twenty years,prestressed concrete continuous girder bridge structure has developed vigorously in our country.But using this method,because of structural parameters,construction technology,structure calculation analysis model and under the influence of factors such as temperature,humidity,time,must bring the bridge structure more complicated changes of the inner force and displacement.In order to guarantee the quality and safe of bridge construction,construction control is of great significance.Bridge construction control is to estimate the actual structure state by using the key parameters measured to identify the structure state parameter in each construction stage and achieve the optimal control of the finished bridge state.The purpose of construction control is to ensure the stress and deformation in each construction stage are consistent with the design requirements,especially to ensure the bridge close smoothly,the bridge linear is good and structure stress is reasonable?Combined with the ancient canal bridge of guanchao road,yangzhou city,this paper summarizes the influencing factors,objectives and significance of the construction monitoring technology of prestressed concrete beam continuous girder bridge,as well as the development status at home and abroad.In addition,the project of yangzhou guanchao road cross-ancient canal bridge is introduced in detail.According to the characteristics of bridge engineering,the construction monitoring scheme is formulated,including the purpose of construction monitoring,the principles of construction monitoring,the methods and contents of construction monitoring.The actual measurement of the bridge across the ancient canal,including linear monitoring,temperature monitoring and stress monitoring,is carried out for the monitoring data analysis.The results show that the actual monitoring data and theoretical values of the bridge have the same development trend,which achieves the expected monitoring purpose.In the end,according to the ancient canal bridge of guanchao road,yangzhou city,this paper introduces the steps of establishing numerical model in detail,points out the key points,sets up numerical model,applies seismic wave to it,studies the seismic performance of bridge,and gives guidance to engineering practice.