Assessment Techniques Of Existing Concrete Filled Steel Tube Arch Bridge On The Basis Of AHP

With the design trend of complication,the bridge accidents happing,the enormous investment and significance in national economy make people pay more attention to the safety, durability and normal functions of these bridges.Structure serving condition monitoring systems and intelligent control technologies have been introduced into these long span bridge and are developing rapidly. At the same time, it becomes a key point that how to exactly valuate the work state of the bridge and put forward the maintaining strategy in time .Assessment research about existing concrete filled steel tube is summarized. Safety assessment system of existing concrete filled steel tube arch bridge is built on basis of fuzzy comprehensive evaluation of AHP.Concrete-filled Steel Tube arch bridge on service state, the structural model of assessment methods, ideas and steps. By AHP bridge will affect the working conditions of various factors structured, hierarchical, and the impact of a particular state or similar factors more closely together, form a layer, so as to establish a multi-level system of indicators, a solution Pipe concrete arch bridge service status are many factors that impact assessment to deal with difficult issues. To use fuzzy comprehensive evaluation of the pipe concrete arch bridge components respectively service condition assessment, the final assessment of the overall structure, and draw conclusions. According to the assessment model underlying factors affecting the membership function, in accordance with the second level of analysis to determine the factors underlying the right vector, and then identified two assessment of the factors affecting the weight vector, the last of the concrete-filled steel tube arch bridge service overall assessment of the state . At the same time introduced a fuzzy assessment of the establishment of judgement matrix-matrix method and the mutual consistency of judgement method. By introducing explicitly based on the Analytic Hierarchy Process fuzzy assessment process, and methods. Through Pipe Concrete Arch Bridge Assessment System, and an assessment of examples of judgement.