한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2006년도 춘계 학술발표회 논문집
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- Pages.1340-1347
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- 2006
각종 매설관의 자유진동거동에 관한 연구
A Study on the Free Vibration Responses of Various Buried Pipelines
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Jeong, Jin-Ho
(Dept. of Civil and Construction Eng., Pukyong National Univ.)
;
- Park, Byung-Ho (Dept. of Civil Engineering, Pukyong National Univ.) ;
- Kim, Sung-Ban (Dept. of Civil Engineering, Pukyong National Univ.) ;
- Kim, Chun-Jin (Dept. of Civil Engineering, Pukyong National Univ.)
- 발행 : 2006.03.24
초록
Dynamic response of buried pipelines both in the axial and the transverse directions on concrete pipe and steel pipe, FRP pipe were investigated through a free vibration analysis. End boundary conditions considered herein consist of free ends, fixed ends, and fixed-free ends in the axial and the transverse direction. Guided ends, simply supported ends, and supported-guided ends were added to the transverse direction. The buried pipeline was regarded as a beam on an elastic foundation and the ground displacement of sinusoidal wave was applied to it. Natural frequencies and mode shapes were determined according to end boundary conditions. In addition, the effects of parameters on the natural frequency were evaluated. The natural frequency is affected most significantly by the soil stiffness and the length of the buried pipelines. The natural frequency increases as the soil stiffness increases while it decreases as the length of the buried pipeline increases. Such behavior appears to be dominant in the axial direction rather than in the transverse direction of the buried pipelines.