Multi-objective risk-informed design of floor isolation systems

2016 ◽  
Vol 45 (8) ◽  
pp. 1293-1313 ◽  
Author(s):  
Ioannis Gidaris ◽  
Alexandros A. Taflanidis ◽  
Diego Lopez-Garcia ◽  
George P. Mavroeidis
Keyword(s):  
Multi Objective ◽  
Objective Risk ◽  
Floor Isolation ◽  
Isolation Systems

Innovative dampers as floor isolation systems for seismically-retrofit multi-storey critical facilities

2019 ◽  
Vol 201 ◽  
pp. 109772
Author(s):  
Lorenzo Casagrande ◽  
Elena Villa ◽  
Adelaide Nespoli ◽  
Antonio Occhiuzzi ◽  
Antonio Bonati ◽  
...  
Keyword(s):  
Critical Facilities ◽  
Floor Isolation ◽  
Isolation Systems

Reliability-based assessment/design of floor isolation systems

2014 ◽  
Vol 78 ◽  
pp. 41-56 ◽  
Author(s):  
Gaofeng Jia ◽  
Ioannis Gidaris ◽  
Alexandros A. Taflanidis ◽  
George P. Mavroeidis
Keyword(s):  
Assessment Design ◽  
Floor Isolation ◽  
Isolation Systems

scholarly journals Fuzzy Representation of Environmental Flow in Multi-Objective Risk Analysis of Reservoir Operation

2021 ◽  
Author(s):  
Jiqing Li ◽  
Jing Huang ◽  
Pengteng Liang ◽  
Jay R. Lund
Keyword(s):  
Risk Analysis ◽  
Reservoir Operation ◽  
Fuzzy Theory ◽  
Environmentally Friendly ◽  
Aquatic Organism ◽  
Environmental Flow ◽  
Multi Objective ◽  
Objective Risk ◽  
Survival And Reproduction ◽  
Fuzzy Representation

Abstract In the context of water shortages, environmental flow is the key to alleviating the negative environmental impact of reservoir operation. Environmentally, the suitable stream flow for the survival and reproduction of aquatic organisms is a varying range, although most of studies now give it a fixed value, which leads to unreasonable resource allocations. In this study, we proposed a fuzzy representation of environmental flow by using the fuzzy theory and the ecological hydraulic radius. Furthermore, we used the Three Gorges-Gezhouba cascade reservoirs as a study case and Four Major Chinese Carps as indicator species. In addition, a multi-objective operation optimization model was established, which solved by the Evolver Palisade software, and a multi-objective risk analysis method was proposed based on the design reliability and risk rate of various benefit operations. The results show that: (1) Based on the environmental flow membership function, flow ranges suitable for the aquatic organism survival and reproduction at specific locations can be determined to help guide reservoir discharge. (2) Taking environmental flow membership as an optimization objective rather than a constraint is conducive to formulating environmentally friendly reservoir operation schemes and make more rational use of water resources. (3) The multi-objective risk analysis can avoid the one-sidedness of a single objective and analyze the risks brought by various benefit operations. Ecological demand has long been a factor considered when formulating reservoir operation schemes. Following the environmentally friendly operation scheme is helpful to protect the environment and maximize the overall benefits of reservoirs.

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