A Study on The Condition Index of Visual Inspection for Taiwan Bridges
Date Issued
2011
Date
2011
Author(s)
Chen, Yi-Wen
Abstract
Taiwan''s bridges construction experienced its peak from 1970 to 1990. In recent years, the demand for bridges has decreased resulting in fewer new bridges constructed. In general, the average age of Taiwan''s bridges is about 20 years. Therefore, most bridges are reaching or already over their design limitation.
Currently, the focus is on the deterioration rate of bridges. However, essential preventive and maintenance strategies for bridges will become an important issue in the future. In addition, visual inspections are not very objective and sometimes results in different assessments. Varying assessments may lead to improper prioritization of corrective action.
The Condition Index (CI) is the most important basis in bridges maintenance and plays a decisive role. However, this research analysis has come to a different conclusion. The Condition Index (CI) scores of bridges are too close to show the current status of bridges.
This paper attempts to formulate a new calculation formula into the Bridges Management System (BMS) in Taiwan. The goal of this paper is to utilize existing site survey data to determine a performance trend.
The paper will modify the formula of Condition Index (CI) to propose New Condition Index (NCI). It is the intention of this research to process the raw inspection data in hopes that the results can provide valuable bridges maintenance information.
The new formula will not only enhance the value of the results from visual inspections of general bridges but also improve the bridges management system to make it more perfect.
Subjects
Bridge maintenance
Visual inspection
New Condition Index(NCI)
Type
thesis
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