KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Mechanical Effects of Back Supporting Beam of Assembled Earth Retaining Wall on Field Model Tests Results

현장모형실험을 통한 AER옹벽의 지주보의 역학적 효과

  • 김홍선 (고려개발(주) 영남지사) ;
  • 임종철 (부산대학교 토목공학과) ;
  • 최중현 (부산항만공사 항만건설부) ;
  • 서민수 (부산대학교 토목공학과)
  • Received : 2016.10.31
  • Accepted : 2017.02.28
  • Published : 2017.04.01
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Abstract

In this study, an Assembled Earth Retaining Wall (AER wall) is newly proposed. The AER wall combined stabilizing piles names as Back Supporting Beam is developed to improve stability and economics of existing retaining walls. For the verification of the AER wall, the field model tests and 3D numerical analyses were performed. As a result of the field tests, it can be confirmed that the earth pressure is considerably reduced compared with the L-shaped retaining wall. Also, the 3D numerical analyses show that AER wall is at least 29.85% more effective at lateral displacement than general L-shaped retaining wall. In other words, AER wall is expected to raise economical efficiency because of excellent mechanical stability of Back Supporting Beam.

AER옹벽은 사면안정에 적용하는 억지말뚝을 옹벽에 결합한 구조로서 새롭게 개발되었으며, 종래의 옹벽보다 안정성과 경제성이 크게 향상 되었다. AER옹벽에 적용된 억지말뚝은 지주보로 명명하고, 지주보에 의해 구조적인 안정성을 증가될 것으로 판단되어 현장모형실험과 3D 수치해석을 실시하였다. 현장실험의 결과, L형 옹벽에 비해 토압이 상당히 감소하는 것을 확인할 수 있으며, 3D 수치해석을 통해 일반적인 L형 옹벽과 AER옹벽을 비교한 결과 최소 29.85%의 수평변위억제효과를 확인하였다. 즉, AER옹벽의 지주보의 뛰어난 역학적 안정성을 통해 경제성을 높일 수 있을 것으로 판단된다.

Keywords

References

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