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Reliability Evaluation of Existing Railway Bridge Structures

Author: SunLiWei
Tutor: YangJianJiang
School: Tianjin University
Course: Structural Engineering
Keywords: Railway bridge Reliability Assess Analytic Hierarchy Process
CLC: U448.13
Type: Master's thesis
Year: 2007
Downloads: 195
Quote: 2
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Abstract

With the rapid development of China's economy , the transportation is becoming increasingly important . The bridge is a transportation throat . Therefore , management and maintenance of the bridge has played an important role in maintaining the health of operators of transport systems . Bridge assessment is an important part of the bridge management , it is the basis for the maintenance and repair work . This article focuses on the reliability assessment of existing reinforced concrete railway bridges . By the influence of various factors such as the inner and outer railway bridges in the operations process , resulting in damage to the bridge varying degrees , causing changes in the structure and function . Therefore, the reliability of the different time bridges are not the same. The a complex railway bridge structural system , affecting the safety of the bridge by many factors , among influencing factors may be interrelated structural reliability assessment will be very difficult. Analytic hierarchy process to each factor principled clarity , in order to determine the analytic hierarchy model to assess the reliability of the bridge . In this paper, AHP, through the bridge structure system analysis to determine the reinforced concrete railroad bridge evaluation index system , the establishment of the comprehensive evaluation model for reinforced concrete railway bridges ; fuzzy statistical method for evaluation of component reliability level , to determine the degree of damage of bridge parts ; consistency of judgment matrix correction method correction expert judgment matrix weight vector to determine the impact of factors , the final assessment of the reliability level of the bridge . In order to facilitate bridge evaluation using VB prepared the bridge reliability assessment auxiliary program , the program uses a visual interface , easy to use. Through the analysis of the bridge reliability assessment to determine the reliability of existing railway bridges assessment methods, provide some recommendations for the reliability assessment of railway bridges .

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridges: by end-use > Railway bridge
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