Lifecycle Assessment of Maintenance, Repair and Rehabilitation Costs: A Reliability Based Deterioration Modeling Approach for Bridge Components

• Main Authors: I-shiang Mao, 毛一祥
• Other Authors: Rong-yau Huang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/73995106422298931773

博士 === 國立中央大學 === 營建管理研究所 === 103 === Bridge MR&R costs can be more objectively estimated if adequate historical data are collected and well processed, also a proper deterioration model is adopted. This study will first demonstrate a systematic approach to explore the key factors leading to bridge deterioration. The representative samples of bridges with similar behaviors of deterioration are then classified by the identified factors. A new condition index (NCI) is defined and the reliability index (Beta) is introduced to measure the deterioration quantitatively. The deterioration trend of the representative samples can then be determined. Finally, the maintaining cost of a bridge with the same deterioration behavior can be estimated. This study achieved the following objects: 1. Identifying the key factors leading to deterioration towards bridge elements; 2. Developing a bridge matching system to retrieve bridge samples by their attributes; 3. Developing a reliability-based deterioration model of bridge elements; 4. Demonstrating a systematic approach to estimate the MR&R cost of bridges.