Analysis And Treatment Of Unusual Vibration Of A Bridge In Guangdong

The construction of expressway had began with the1980’s in China. At the year2013,the total expressway mileage of our country has reached to104468Km. The servingexpressway of Guangdong Province which constructed and opened to traffic by the1990’are‘old’bridge and need to be reinforced more or less to regain normal service function. One ofthe diseases that affect the bridge is unusual vibration. Mild unusual vibration could do harmto the structural member, serious unusual vibration may course collapsed of the bridge andlost of property and human life.The bridge of expressway which across the river may vibrate unusually coursed byetc. design defect foundation erode steel pile rust overloaded vehicle. It is a problemworthwhile discusses.How to analyse and make a proper treatment is a proplem thatworthwhile to be discussed. Correct analysis can provide evidence to proper treatmentapropriate treatment could reduse budget and influence to the serving expressway.This article mainly aims at the problem of the unusual vibration of a T-structure bridgein Guangdong province. First exclude the unusual vibratin was cursed by structural diseasethrough appearance and underwater pile foundation inspection, then build a model andcalculate the vibration characteristics of the bridge by using finite element software. Next toCompare the real vibration with theoretical vibration characteristics of the bridge. Finallywork out the main reason of the unusual vibration by compared the vibration with anotherhealthy bridge. And according to the actual situation, choose the best reinforcement in somepopular reinforcement in nowadays. This article has a certain value in practical application,can be used as a reference in similar cases.