Seismic performance assessment and potential failure modes of intake towers

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• 作者：Hanyun Zhang ; Liaojun Zhang
• 刊名：Natural Hazards
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：83
• 期：3
• 页码：1321-1340
• 全文大小：2,830 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Hydrogeology
  Geophysics and Geodesy
  Geotechnical Engineering
  Civil Engineering
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-0840
• 卷排序：83

文摘

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.KeywordsPerformance-based seismic designIncremental dynamic analysisIntake towersSeismic performance assessmentFailure mode