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Enhancing Disaster Resilience of Highway Bridges to Multiple Hazards
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2014-04-01
[PDF-615.45 KB]
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Abstract:This research includes analytical investigation of the effectiveness of bridge retrofit in enhancing seismic resilience of highway bridges. A reinforced concrete bridge in the La Cienega- Venice Boulevard sector of the Santa Monica (I-10) freeway in Los Angeles, California, is analyzed. During the 1994 Northridge earthquake, this bridge was severely damaged primarily due to shear failure of one bridge pier. Post-event reconnaissance indicated that the failure was initiated from inadequate lateral confinement of bridge piers designed in pre-1971 era. As part of this research, bridge piers are retrofitted with steel jackets assuming the undamaged condition of the bridge prior to the Northridge event. Research outcome showed that applied retrofit resulted in an enhancement of seismic resilience of the bridge from 57.5 to 99.9 percent. A cost-benefit analysis revealed that the applied retrofit technique is also cost effective (Venkittaraman and Banerjee 2013).
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Main Document Checksum:urn:sha256:c3ab2e580744c9f6c18f84a2ae0e3f41089c453bdf17e450a98ef2d53293cf01
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