Seismic performance assessment and potential failure modes of intake towers

Hanyun Zhang () and Liaojun Zhang
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Hanyun Zhang: Hohai University
Liaojun Zhang: Hohai University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2016, vol. 83, issue 3, No 1, 1340 pages

Abstract: Abstract The seismic safety and proper functioning of intake towers immediately after an earthquake is crucial to the seismic reliability of the whole hydraulic engineering. This study proposes a performance-based seismic design methodology for intake towers based on the incremental dynamic analysis (IDA), which takes into account the interactions of the main intake tower with hoist chambers, foundations, and reservoirs. An IDA-based seismic assessment method including fractile and fragility analyses for high-rise intake towers is developed. A high-rise intake tower of a hydropower station in Southwest China is taken as a demonstration case. The initiation and propagation of seismic cracks, and the potential failure modes and mechanisms were investigated according to a series of nonlinear numerical simulation tests.

Keywords: Performance-based seismic design; Incremental dynamic analysis; Intake towers; Seismic performance assessment; Failure mode (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1007/s11069-016-2395-9

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