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Journal of the Korean Society of Hazard Mitigation 2013;13(5):43-50.
Published online October 31, 2013.
교량의 가치를 고려한 위험도기반 교량관리기법
선종완, 박경훈
Risk based Bridge Management Method considering Value of Bridges
Jong-Wan Sun, Kyung-Hoon Park
Abstract
In order to efficiently and reasonably use a limited budget for bridge maintenance, a systematic decision-making method is proposed considering the performance of individual bridges and their direct and indirect values. The typical bridge performance is expressed with the risk level which is based on the risk rate evaluated with the condition state and safety factor of the bridge. The replacement value of the bridges is estimated by considering the sum of direct reconstruction cost and potential value depending on several traffic conditions around the bridges. Final representative risk of each bridge is defined as risk grade which is determined form the risk matrix combining the risk level and replacement value. A number of actual bridge structures are considered to demonstrate the applicability and verification of the proposed method. From the results, the method can be expected to lead a quantitative decision-making in maintenance phase of bridges.
Key Words: Bridge management; Bridge performance; Risk level; Replacement value; Risk grade
요지
한정된 교량 유지관리 예산의 효율적 합리적 활용을 위하여 개별 교량의 성능과 직 간접적인 가치를 고려하여 의사결정이 가능한 방법을 제시하였다. 교량 대표성능을 상태등급과 안전율이 의미하는 위험정도에 따른 조합인 위험수준으로 나타내고, 교량의 직접적인 개축비용과 위치에 따른 교통환경이 고려된 내재적 가치를 고려하여 대체가치를 산출하였다. 위험수준과 대체가치를 이용하여 위험도 매트릭스를 구성하고, 개별 교량의 종합적인 위험도를 대표하는 위험등급을 정의하였다. 제안된 방법의 실제적인 적용성 고찰을 위하여 다수의 실제 교량에 대한 분석을 수행하였으며, 교량 유지관리를 위한 의사결정의 정량적 객관화가 가능할 것으로 판단된다.
핵심용어: 교량관리; 교량성능; 위험수준; 대체가치; 위험등급
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