The Stydy Of Condition Assessment And Reinforcement Technology To Zhou Qu Cheng Jiang Bridge After Disaster

At present, the part of the bridge is not healthy, more or less is a disease. Especially in theface of sudden natural disaster, the damage to the bridge is inevitable. This situation alsohappen from time to time, how to deal with is the bridge workers need to solve the problem.Make an accurate assessment after damage of the Bridges is crucial, because it can givesolutions or measures of this bridge. General situation of bridge damage is to reinforce,select a reasonable reinforcement scheme is very important. Therefore disease analysis wascarried out on the bridge, and bridge condition assessment, thus the research ofreinforcement technology has very important significance.In2008after a mudslide in Zhou Qu Cheng Jiang bridge as the research background,Zhou Qu Cheng Jiang bridge upper structure as the main span70meters of reinforcedconcrete truss arch bridge, bridge length103.5meters, bridge9.5meters wide. Main USESgravity C15flaky concrete abutment, using the three steps of flaky concrete foundation.After the mudslide, construction department quickly called for domestic bridge expert topost-disaster assessment of Bridges, to determine the safety of the bridge can satisfy the userequirement. The panel according to the test evaluation results and the actual situation todetermine the reinforcement scheme: to paste the steel box girder arch rib reinforcement,improve the bearing capacity of bridge; On the top of the original bridge transverse LiangLiang bottom pasting steel plate reinforcement, new7on the main arch rib root cross beam,strengthen the whole bridge transverse connection, form the framework of the whole bridge.According to "highway bridge technique condition evaluation standard" technology ofbridge condition assessment, according to the highway bridge bearing capacity checkingevaluation procedures on the bridge bearing capacity evaluation. By reliability theory toevaluate the bearing capacity of the bridge. Through Zhou Qu Cheng Jiang bridge techniquecondition evaluation, it is concluded that the defect in the bridge condition is serious; By thetwo methods of bearing capacity evaluation, has obtained the boat after the mudslide ZhouQu Cheng Jiang bridge carrying capacity are not meet the requirements. Based on theresearch of the steel reinforcement design, analyzes the advantages and rationality of thismethod. And through the bridge load test, the paper analyzes the reinforcement of the actualperformance of the bridge after enhancement and improvement. Finally compared the? onthe mechanical properties before and after bridge reinforcement.