A MODE MATCHING TECHNIQUE FOR THE SEISMIC RESPONSE OF LIQUID STORAGE TANKS INCLUDING SOIL-STRUCTURE INTERACTION

2020 ◽  
Author(s):  
Apostolos Tsouvalas ◽  
Timo Molenkamp ◽  
Khairina Canny ◽  
David Kroon ◽  
Marco Versluis ◽  
...  
Keyword(s):  
Seismic Response ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Mode Matching ◽  
Storage Tanks ◽  
Structure Interaction ◽  
Liquid Storage ◽  
Matching Technique ◽  
Mode Matching Technique

scholarly journals Evaluation of Soil-Structure Interaction on the Seismic Response of Liquid Storage Tanks under Earthquake Ground Motions

2016 ◽  
Author(s):  
Mostafa Farajian ◽  
Mohammad Iman Khodakarami ◽  
Denise-Penelope N. Kontoni
Keyword(s):  
Seismic Response ◽  
Soil Structure ◽  
Ground Motions ◽  
Time History ◽  
Soil Structure Interaction ◽  
Storage Tanks ◽  
Structure Interaction ◽  
Earthquake Ground Motions ◽  
Liquid Storage ◽  
Matlab Programming

Soil-structure interaction (SSI) could affect the seismic response of structures. Since liquid storage tanks are vital structures and must continue their operation under severe earthquakes, their seismic behavior should be studied. Accordingly, the seismic response of liquid storage tanks founded on half space soil is scrutinized under different earthquake ground motions. To better comparison, the six considered ground motions are classified based on their pulse like characteristics, into two groups, named far and near fault ground motions. To model the liquid storage tanks, the simplified mass-spring model is used and the liquid is modeled as two lumped masses known as sloshing and impulsive, and the interaction of fluid and structure is considered using two coupled springs and dashpots. The SSI effect, also, is considered using a coupled spring and dashpot. Besides, four types of soils are used to consider wide variety of soil properties. To this end, after deriving the equations of motion, the MATLAB programming is employed to obtain the time history responses. Results show that although the SSI effect leads to decrease the impulsive displacement, overturning moment and normalized base shear, the sloshing (or convective) displacement is not affected by such effects due to its long period.

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