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2014 Vol.13, Issue 4 Preview Page
Modelling and Analysis of Roll-Type Steel Mat for Rapid Stabilization of Permafrost (II) - Parametric Analysis -

영구동토 급속안정화를 위한 롤타입강재매트의 모델링과 해석(II)- 변수해석 -

Do Young Moon1
,
Jae Mo Kang2*
,
Janggeun Lee3
,
Sang Yoon Lee4
문 도영1
,
강 재모2*
,
이 장근3
,
이 상윤4
1Assistant Professor, Dept. of Civil Engineering, Kyungsung Univ.
2Researcher, Korea Institute of Civil Engineering and Building Technology
3Senior Researcher, Korea Institute of Civil Engineering and Building Technology
4Senior Researcher, Korea Institute of Civil Engineering and Building Technology
*교신저자. *Corresponding Author. 
30 December 2014. pp. 109-117
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Abstract

Using the finite element analysis model presented in accompanying paper, parametric study was performed in this paper. Various parameters were considered such as the width of wheel loads-induced permanent plastic deformation, backfill, equivalent thickness and orthogonal characteristic of steel mats. The effects of these parameters were analyzed for vertical and rotational displacements, maximum moment and tensile stress. From the parametric studies, it is found that great vertical deflection and tensile stress above allowable flexural tensile strength are developed in steel mats by the wheel loads-induced permanent plastic deformation. Backfill or increasing the thickness of steel mats is a feasible solution on this problem.

Keywords
Permafrost
Steel mat
Parametric analysis
Permanent plastic deformation
backfilling

본 논문에서는 전편의 논문에서 제시한 힌지연결부를 갖는 쉘해석모델을 이용하여 변수연구를 수행하였다. 주요변수에는 중차량 통과에 의하여 발생한 원지반의 영구변형 폭, 되메움, 강재매트의 등가두께 및 강재매트의 이방성 특성이 고려되었다. 이러한 주요변수들이 롤타입강재매트의 수직처짐, 회전변위 및 모멘트와 응력에 미치는 영향을 분석하였다. 분석결과, 차륜하중에 의하여 발생한 동토의 영구소성변형으로 인하여 매우 큰 수직처짐과 허용휨인장강도를 초과하는 인장응력이 발생하는 것으로 나타났다. 이러한 문제는 되메움 또는 강재매트의 등가두께를 증가시킴으로서 쉽게 해결될 수 있다.

References
1
1.AASHTO (1993), AASHTO Guide for design of pavement structures, Number V. 2.
2
2.Robinson, T., Armstrong, C. and Fairey, R. (2011), “Automated mixed dimensional modelling from 2d and 3d cad models”, Finite Elements in Analysis and Design, Vol.47, No.2, pp.151-165.
3
3.Antognelli, L. (2009), “Design and Fabrication of a GFRP Road Plate”, Proceedings of ICCM17-Advanced Composite Materials in Construction, Edinburgh, UK, (A1:2).
4
4.Gartrell, C. A. (2007), “Performance measurements of pavement matting systems by full-scale testing over differing soil strengths”, Journal of Materials in Civil Engineering, Vol.21, No.10, pp.561-568.
5
5.Mak, T. L. A. (2012), Modular Road Plate System, Master’s Thesis, Waterloo Univ, pp.1-108.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 13
  • No :4
  • Pages :109-117
  • Received Date : 2014-08-29
  • Revised Date : 2014-11-19
  • Accepted Date : 2014-12-04
  • DOI :https://doi.org/10.12814/jkgss.2014.13.4.109
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