SEISMIC ASSESSMENT OF 100-YEAR-OLD BUTTRESS CONCRETE DAM
Client: Confidential
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Location: Nova Scotia
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Scope:
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Determine the risk of failure of the structural dam against seismic loads.
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Complexity:
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The structure experiences active deterioration of concrete integrity.
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Seismic analysis requires considering the soil-structure interaction.
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Smooth reinforcing bars were used with inadequate anchorage length.
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Approach / Value
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A nonlinear finite element model of the damaged structure was developed based on NDT and laser scanning of the structure.
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Advanced structural analysis including nonlinear time-history analysis was performed to provide accurate results of the structural response.
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A risk-based approach was utilized to represent the relationship between the likelihood and consequence of failure.
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NOEL’s approach yielded an accurate representation of the risk of failure and assisted the client with informed decisions regarding repair versus replacement.
