Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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A Numerical Study on Economic Design of Prefabricated Sewage-Pipe Plastic Foundation

조립식 하수관거 플라스틱 받침 기초의 경제적인 단면 설계를 위한 해석연구

  • Kang, Sung-Yong (Department of Architectural and Civil Engineering, Korea University) ;
  • Park, Jong-Sup (Department of Civil Engineering, Sangmyung University) ;
  • Lee, Kwan-Ho (Department of Civil and Environmental Engineering, Kongju National University)
  • 강성용 (고려대학교 건축사회환경공학과) ;
  • 박종섭 (상명대학교 건설시스템공학과) ;
  • 이관호 (공주대학교 건설환경공학부)
  • Received : 2013.08.02
  • Accepted : 2013.08.26
  • Published : 2013.10.31
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Abstract

Improper backfill materials and compaction controls under pipelines have become one of the major causes of failure in many sewage pipeline systems. A study on backfill materials and compaction controls has been considered for a long time. However, structural supporters under the pipe were recently concerned because of pipeline repair and maintenance. This paper presents a prefabricated plastic foundation for supporting a sewage pipe system and increasing the performance function of the pipes. Several analytical models for the plastic foundations were investigated using finite-element program, ABAQUS, for checking safety and determining economic design. Comparing with the results of analyses, some of economic design sections based on the sizes of pipe diameters, 300mm and 600mm, were recommended. These results could be applied to a pipeline system with a prefabricated plastic foundation.

하수관거 현장 조립 시공 시 불균형한 다짐과 관거 이격현상에 의해 관거 이음부에 누수와 침하가 발생하여 하수관거로서의 기능이 크게 저하되고 있다. 많은 연구자들이 하수관거 하부 및 측면의 친환경적 채움재 개발과 채움재 다짐 방법론에 대해 오랫동안 연구를 진행하였다. 최근들어 하수관거 하부에 구조적 받침을 설치하여 파이프의 수명과 기능을 향상시키는 방법에 대한 연구가 활발히 진행되고 있다. 본 논문에서는 하수관거를 지지하고 관거의 기능을 오랫동안 유지시키기 위한 조립식 플라스틱 기초 개발 및 안전성 평가에 대해서 자세히 기술하고 있다. 범용 유한요소해석 프로그램인 ABAQUS가 플라스틱 기초의 안전성 평가 및 경제적인 설계단면 선정에 적극 활용되었다. 관경 300 mm, 600 mm를 지지하는 하수관거 플라스틱 기초의 경제적인 형식을 결정하기위하여 여러 개의 설계단면이 본 연구에서 검토되었으며, 해석결과 분석을 통해 안전하며 경제적인 설계단면을 제안하였다. 본 연구결과는 플라스틱 하수관거 기초가 사용되는 유사연구에 널리 사용될 수 있을 것이다.

Keywords

Acknowledgement

Supported by : 환경부

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