Optimal Retrofit Scheme for Highway Network under Seismic Hazards
Many older highway bridges in the United States (US) are inadequate for seismic loads and could be severely damaged or collapsed in a relatively small earthquake. According to the most recent American Society of Civil Engineers’ infrastructure report card, one-third of the bridges in the US are rate...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2014-06-01
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| Series: | International Journal of Transportation Science and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2046043016300910 |
| _version_ | 1797706501878448128 |
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| author | Yongxi Huang Shawn Parmelee Weichiang Pang |
| author_facet | Yongxi Huang Shawn Parmelee Weichiang Pang |
| author_sort | Yongxi Huang |
| collection | DOAJ |
| description | Many older highway bridges in the United States (US) are inadequate for seismic loads and could be severely damaged or collapsed in a relatively small earthquake. According to the most recent American Society of Civil Engineers’ infrastructure report card, one-third of the bridges in the US are rated as structurally deficient and many of these structurally deficient bridges are located in seismic zones. To improve this situation, at-risk bridges must be identified and evaluated and effective retrofitting programs should be in place to reduce their seismic vulnerabilities. In this study, a new retrofit strategy decision scheme for highway bridges under seismic hazards is developed and seamlessly integrate the scenario-based seismic analysis of bridges and the traffic network into the proposed optimization modeling framework. A full spectrum of bridge retrofit strategies is considered based on explicit structural assessment for each seismic damage state. As an empirical case study, the proposed retrofit strategy decision scheme is utilized to evaluate the bridge network in one of the active seismic zones in the US, Charleston, South Carolina. The developed modeling framework, on average, will help increase network throughput traffic capacity by 45% with a cost increase of only $15million for the Mw 5.5 event and increase the capacity fourfold with a cost of only $32m for the Mw 7.0 event. |
| first_indexed | 2024-03-12T05:52:13Z |
| format | Article |
| id | doaj.art-2aa6b077af0943c3ae62e6e61c4e362e |
| institution | Directory Open Access Journal |
| issn | 2046-0430 |
| language | English |
| last_indexed | 2024-03-12T05:52:13Z |
| publishDate | 2014-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Journal of Transportation Science and Technology |
| spelling | doaj.art-2aa6b077af0943c3ae62e6e61c4e362e2023-09-03T04:57:49ZengKeAi Communications Co., Ltd.International Journal of Transportation Science and Technology2046-04302014-06-013210912810.1260/2046-0430.3.2.109Optimal Retrofit Scheme for Highway Network under Seismic HazardsYongxi Huang0Shawn Parmelee1Weichiang Pang2Glenn Department of Civil Engineering, Clemson University, Clemson, SC 29634Civil Engineer, AMEC, 400 Executive Center Dr. Greenville, SC 29615Assistant Professor, 1-864-656-0114, lenn Department of Civil Engineering, Clemson University, Clemson, SC 29634Many older highway bridges in the United States (US) are inadequate for seismic loads and could be severely damaged or collapsed in a relatively small earthquake. According to the most recent American Society of Civil Engineers’ infrastructure report card, one-third of the bridges in the US are rated as structurally deficient and many of these structurally deficient bridges are located in seismic zones. To improve this situation, at-risk bridges must be identified and evaluated and effective retrofitting programs should be in place to reduce their seismic vulnerabilities. In this study, a new retrofit strategy decision scheme for highway bridges under seismic hazards is developed and seamlessly integrate the scenario-based seismic analysis of bridges and the traffic network into the proposed optimization modeling framework. A full spectrum of bridge retrofit strategies is considered based on explicit structural assessment for each seismic damage state. As an empirical case study, the proposed retrofit strategy decision scheme is utilized to evaluate the bridge network in one of the active seismic zones in the US, Charleston, South Carolina. The developed modeling framework, on average, will help increase network throughput traffic capacity by 45% with a cost increase of only $15million for the Mw 5.5 event and increase the capacity fourfold with a cost of only $32m for the Mw 7.0 event.http://www.sciencedirect.com/science/article/pii/S2046043016300910RetrofitSeismic hazardsOptimizationHighway network |
| spellingShingle | Yongxi Huang Shawn Parmelee Weichiang Pang Optimal Retrofit Scheme for Highway Network under Seismic Hazards International Journal of Transportation Science and Technology Retrofit Seismic hazards Optimization Highway network |
| title | Optimal Retrofit Scheme for Highway Network under Seismic Hazards |
| title_full | Optimal Retrofit Scheme for Highway Network under Seismic Hazards |
| title_fullStr | Optimal Retrofit Scheme for Highway Network under Seismic Hazards |
| title_full_unstemmed | Optimal Retrofit Scheme for Highway Network under Seismic Hazards |
| title_short | Optimal Retrofit Scheme for Highway Network under Seismic Hazards |
| title_sort | optimal retrofit scheme for highway network under seismic hazards |
| topic | Retrofit Seismic hazards Optimization Highway network |
| url | http://www.sciencedirect.com/science/article/pii/S2046043016300910 |
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