Development of Curve Fitted Equation for the Dynamic Response of a Buried Concrete Pipelines with Various End Boundary Conditions

여러 단부경계조건을 가진 콘크리트 매설관의 동적응답에 대한 곡선적합식의 개발

  • Jeong, Jin-Ho (Dept. of Civil and Construction Eng., Pukyong National Univ.) ;
  • Kim, Sung-Ban (Dept. of Civil Engineering, Pukyong National Univ.) ;
  • Joeng, Du-Hwoe (Dept. of Civil and Construction Eng., Pukyong National Univ.)
  • 정진호 (부경대학교 건설공학부) ;
  • 김성반 (부경대학교 대학원 토목공학과) ;
  • 정두회 (부경대학교 건설공학부)
  • Published : 2006.03.24

Abstract

This study is to investigate dynamic response of concrete buried pipelines with various end boundary conditions and develop a curve fitted equation to ensure practicality and convenience for the use at the actual field for the test of resistance of earthquake. Dynamic response under the various end boundary conditions is calculated with analysis on values and computing programs. However, such a method of analysis requires skillfulness in using computing programs for dynamic movement of buried pipelines with dynamic analysis formula and has lower efficiency and practicality because, in the nature of analysis program of values, it needs much time to conduct repeated calculations. Therefore, the study is intended to develop a curve fitted equation to ensure more efficient and practical analysis. This paper tests various degrees of equation with non-linear least square method and developments a curve fitted equation based on the transmission speed with the best results. In the use of curve fitted equation, degree of polynomial and determining coefficient are influenced by the speed of transmission.

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