Rapid Estimation of Los Angeles Freeway Network Flows
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서지정보
ㆍ발행기관 : 대한교통학회
ㆍ수록지정보 : 대한교통학회지 / 33권
ㆍ저자명 : 김근영
ㆍ저자명 : 김근영
목차
1. Introduction2. Seismic Risk Analysis
3. Literature Review
4. Transportation Network Analysis Procedure
5. Los Angeles Highway System and Empirical Data
6. Analysis and Results
7. Conclusions
References
한국어 초록
Earthquakes damage freeway bridges and structures, resulting in significant impacts on transportation system performance and regional economy. California frequently experienced minor to severe earthquakes. The earthquake impacts can be reduced by improved seismic risk mitigation strategies and programs. The California Department of Transportation (Caltrans) has developed bridge retrofit programs that include seismic risk analysis (SRA) procedures for structural re-enforcement projects. Caltrans’ SRA procedures establish retrofit priorities for vulnerable highway bridges.Existing SRA procedures use average daily traffic (ADT) volumes to determine the relative importance of a bridge. This is not adequate. The importance of network links should be evaluated in terms of the additional system cost due to failure. Incorporation of an efficient transportation modeling technology in the SRA procedures is essential to determine the relative importance of bridges.