Experimental investigation on the seismic response of a steel liquid storage tank equipped with floating roof by shaking table tests

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
M. De Angelis ◽  
R. Giannini ◽  
F. Paolacci
Keyword(s):  
Experimental Investigation ◽  
Seismic Response ◽  
Storage Tank ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Liquid Storage ◽  
Liquid Storage Tank

scholarly journals Non-Contact Water Level Response Measurement of a Tubular Level Gauge Using Image Signals

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2217 ◽  
Author(s):  
Sung-Wan Kim ◽  
Dong-Uk Park ◽  
Bub-Gyu Jeon ◽  
Sung-Jin Chang
Keyword(s):  
Water Level ◽  
Storage Tank ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Level Gauge ◽  
Fluid Level ◽  
Response Measurement ◽  
Liquid Storage ◽  
Fluid Sloshing ◽  
Liquid Storage Tank

The occurrence of excessive fluid sloshing during an earthquake can damage structures used to store fluids and can induce secondary disasters, such as environmental destruction and human casualties, due to discharge of the stored fluids. Thus, to prevent such disasters, it is important to accurately predict the sloshing behavior of liquid storage tanks. Tubular level gauges, which visually show the fluid level of a liquid storage tank, are easy to install and economical compared to other water level gauges. They directly show the fluid level and can be applied for various fluids because they can be constructed with various materials according to the fluid characteristics and the intended use. Therefore, in this study, the shaking table test was conducted to verify the validity of the method for measuring the water level response of the tubular level gauge installed on a liquid storage tank using image signals. In addition, image enhancement methods were applied to distinguish between the float installed in the tubular level gauge and the gray level of the background.

Seismic Response Analysis of Large Liquid Storage Tanks

2012 ◽  
Vol 166-169 ◽  
pp. 2490-2493
Author(s):  
Yuan Zhang ◽  
You Hai Guan
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Storage Tank ◽  
Response Analysis ◽  
Storage Tanks ◽  
Performance Study ◽  
Seismic Response Analysis ◽  
Seismic Safety ◽  
Liquid Storage ◽  
Liquid Storage Tank

Due to frequent earthquakes in recent years, the seismic safety of large storage tank is very important. In this paper, seismic response of large liquid storage tanks is analyzed. A model for liquid storage tank is established firstly. By modality analysis, dynamic behavior of large storage tank is obtained. After the model is excitated by seismic, seismic responses are obtained. The conclusions show that, without considering liquid-solid coupling, "elephant foot" buckling phenomenon doesn’t appear. This study provides reference for seismic design and seismic performance study of large storage tank.

Study on a Combined Isolation Method for Large LNG Storage Tanks in Soft Site

2013 ◽  
Author(s):  
Dagen Weng ◽  
Shuai Liu
Keyword(s):  
Seismic Response ◽  
Storage Tank ◽  
Design Method ◽  
Horizontal Displacement ◽  
Control Technique ◽  
Seismic Action ◽  
Isolation Layer ◽  
Liquid Storage ◽  
Liquid Storage Tank ◽  
Strong Ground

The fundamental natural frequency that can determine the seismic response of large LNG storage tank is usually within 2Hz∼10Hz, it is in the range of predominant frequency of strong ground motion. It has been proved that the isolation control technique can be adopted to mitigate the seismic action on the liquid storage tank in the hard site, but in the soft site, if the conventional isolation design methods are still be used for seismic mitigation of the large LNG storage tank, the problems that the isolation period is too long, and the horizontal displacement of the isolation layer is too large under strong earthquake will be produced. For these problems, a combined isolation design method that is suitable for soft site is proposed in this paper. Based on the Malhotra’s simplified elastic-wall model of liquid storage tank, the simplified multi-mass mechanical model of combined isolated large LNG storage tank is established, and the seismic response of the LNG storage tank under the case of SSE (safety shutdown earthquake) is analyzed. The results show that the seismic-reduced effectiveness of the combined isolated LNG storage tank is obvious, and the horizontal displacement of isolation layer can be controlled in an acceptable range.

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