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http://dx.doi.org/10.7843/kgs.2018.34.11.81

Laboratory Experiments for Evaluating Dynamic Response of Small-scaled Circular Steel Pipe  

Song, Jung Uk (School of Architecture and Civil Engrg., Korea Univ.)
Lee, Jong-Sub (School of Architecture and Civil Engrg., Korea Univ.)
Park, Min-Chul (School of Architecture and Civil Engrg., Korea Univ.)
Byun, Yong-Hoon (School of Agricultural Civil & Bio-Industrial Engrg., Kyungpook National Univ.)
Yu, Jung-Doung (School of Architecture and Civil Engrg., Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.11, 2018 , pp. 81-92 More about this Journal
Abstract
For a marine bridge foundation construction, a large-circular-steel-pipe has been proposed for supporting vertical load and preventing water infiltration. However, a ship collision can adversely affect the structural stability. This paper presents a fundamental study on dynamic responses of the large-circular-steel-pipe by an impact load. In laboratory experiments, small-scaled steel pipe is installed in a soil tank. The soil height and water level are set to 23 cm and 25~70 cm, respectively. The upper part of the steel pipe is impacted using a hammer to simulate the ship collision. The dynamic responses are measured using accelerometers and strain gauges. Experimental results show that the strain decreases as the measured location is lowered. The higher frequency components appear in the impact load condition compared to the microtremor condition. However, the higher frequency components measured at the strain gauge located below the water level do not appear. For the accelerometer signal, the maximum frequency under the impact load is higher than that of the microtremor. The maximum frequency decreases as water level increases but it is larger than the maximum frequency of the microtremor. This study shows that strain gauge and accelerometer can be useful for evaluating the dynamic responses of large-circular-steel-pipes.
Keywords
Accelerometer; Large Circular Steel Pipe; Dynamic Response; Ship Collision; Strain gauge;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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