THE DETERIORATION ANALYSIS AND MAINTENANCE STRATEGY FOR CONCRETE BRIDGE
Date Issued
2007
Date
2007
Author(s)
Chung, Chin-Lung
DOI
en-US
Abstract
Usually the rating values are determined by visual inspection in most of the Bridge Management Systems (BMS). A visual inspection is not very objective, and can sometimes result in a different assessment of element condition what may lead to the improper prioritization for taking corrective action. Our novel evaluation results in a more objective condition rating based on the visual inspection data. In order to provide an easier way to arrange and prioritize the maintenance schedule among the bridges, the health condition of a bridge needs to be diagnosed in a more practical and more accurate manner. This work utilized systematic classification and statistical analysis based on the thousands of sets of existing bridge inspection data collected in Taiwan over the past 5 years, with the following goals in mind: (1) develop a normal zone in the health condition shown on the diagnostic figure, and identify the health situation for the bridge using a specific inspection condition; (2) determine the time when the bridge will be in the worst situation, then determine the proper time for maintenance to be carried out; (3) introduce a new data process and innovative model into the BMS in Taiwan, as it will definitely be an asset to be able to estimate reliable maintenance costs in the future.
In factor, the status of a bridge is determined by its structural capability and material strength. Consequently a lot of researchers have studied the failure, the fatigue, and the deterioration of the structure in terms of the structural function of a bridge. However, the overall performance of a bridge may be affected simply by the damage of one of its components. Therefore this study utilized a systematic classification and statistical analysis based on the existing bridge inspection data collected in Taiwan to reach the following goals: (1) assess the performance distribution and deterioration rate for components of bridge; (2) find out the right time to do the preventive and essential maintenance for the component of bridge with an empirical method, and to decide what time and which component of a bridge will receive preventive maintenance or regular maintenance.
Finally the application of data mining was introduced to respond the reliability of the results by comparison methods from macro and micro point of views.
Key Words: Inspection, Performance, Bridge Maintenance, Deterioration, Safety, Data Mining.
Subjects
檢測
績效評估
橋梁維護管理
劣化
安全性
資料採礦
Inspection
Performance
Bridge Maintenance
Deterioration
Safety
Data Mining
Type
thesis
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