A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Socio-economic effect of seismic retrofit of bridges for highway transportation networks: a pilot study
A simulation-based study is performed to evaluate the socio-economic effect of seismic retrofit of bridges using the California Department of Transportation (Caltrans) Los Angeles area highway network as the testbed. 47 scenario earthquakes that represent the regional seismic hazard, consistent with the US Geological Survey (USGS) hazard map, are considered. Two sets of bridge fragility curves, before and after seismic retrofit, are used to simulate the seismic performance of the network in both cases. Analysis estimates the total social cost arising from driver delay and loss of opportunity in the degraded network. The benefit of seismic retrofitting is computed in present values as equal to the total future economic losses avoided from social cost and repair/restoration cost over the remaining bridge service lives. Estimated benefit is compared with the retrofit cost to investigate the benefit-cost ratio. Study shows that from the Caltrans point of interest, bridge seismic retrofit is cost-effective when loss avoided due to social cost is considered.
Socio-economic effect of seismic retrofit of bridges for highway transportation networks: a pilot study
A simulation-based study is performed to evaluate the socio-economic effect of seismic retrofit of bridges using the California Department of Transportation (Caltrans) Los Angeles area highway network as the testbed. 47 scenario earthquakes that represent the regional seismic hazard, consistent with the US Geological Survey (USGS) hazard map, are considered. Two sets of bridge fragility curves, before and after seismic retrofit, are used to simulate the seismic performance of the network in both cases. Analysis estimates the total social cost arising from driver delay and loss of opportunity in the degraded network. The benefit of seismic retrofitting is computed in present values as equal to the total future economic losses avoided from social cost and repair/restoration cost over the remaining bridge service lives. Estimated benefit is compared with the retrofit cost to investigate the benefit-cost ratio. Study shows that from the Caltrans point of interest, bridge seismic retrofit is cost-effective when loss avoided due to social cost is considered.
Socio-economic effect of seismic retrofit of bridges for highway transportation networks: a pilot study
Zhou, Youwei (author) / Banerjee, Swagata (author) / Shinozuka, Masanobu (author)
Structure and Infrastructure Engineering ; 6 ; 145-157
2010-02-01
13 pages
Article (Journal)
Electronic Resource
Unknown
Seismic Retrofit of Highway Bridges
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Effect of seismic retrofit of bridges on transportation networks
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Seismic Design and Retrofit Manual for Highway Bridges
| NTIS | 1987