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Civil Engineering Association eBooks Structural Dynamics and Earthquake Engineering Seismic Assessment and Retrofit of Existing Multi-Column Bent Bridges

Seismic Assessment and Retrofit of Existing Multi-Column Bent Bridges
 mahyarov

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10-27-2012, 03:55 PM
Seismic Assessment and Retrofit of Existing Multi-Column Bent Bridges

Author: McDaniel, Cole C | Size: 2.08 MB | Format: PDF | Quality: Unspecified | Publisher: Washington State University, Pullman | Year: 2006 | pages: 63

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The main objective of this research was to assess the seismic vulnerability of typical pre-1975 Washington State Department of Transportation (WSDOT) prestressed concrete multi-column bent bridges. Additional objectives included determining the influence of soil-structure-interaction on the bridge assessment and evaluating the effects of non-traditional retrofit schemes on the global response of the bridges. Overall this research highlighted the vulnerability of non-monolithic bridge decks and shear-dominated bridge columns in pre-1975 WSDOT prestressed concrete multi-column bent bridges as well as the importance of including soil-structure-interaction, calibrating the force/displacement characterization of the columns to experimental test data and detailed modeling of the bridges such as expansion joint/girder interaction. In the end, the seismic assessment of bridges is a cost/efficiency issue. Each bridge is different, therefore, investing in improved analyses up front will enable an efficient use of the limited funds for bridge improvement, resulting in a significant savings overall.

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