Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Weighting Value Evaluation of Condition Assessment Item in Reinforced Earth Retaining Walls by Applying Hybrid Weighting Technique

혼합 가중치를 적용한 보강토 옹벽의 상태평가항목 가중치 평가

  • 이형도 (충북대학교 안전공학과) ;
  • 원정훈 (충북대학교 안전공학과) ;
  • 성주현 (한국시설안전공단 시설성능연구소 유지관리기술그룹)
  • Received : 2017.05.04
  • Accepted : 2017.08.21
  • Published : 2017.09.01
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Abstract

This study proposed the new weighting values and fault points of condition assessment items for reinforced earth retaining walls based on the combination the inspection data and hybrid weighting technique. Utilizing the inspection data of 161 reinforced earth retaining walls, multi regression analysis and entropy technique were applied to gain the weighting values of condition assessment items. In addition, the weighting values by AHP technique was analyzed based on the opinion of experts. By appling hybrid weighting technique to the calculated weighting values obtained by the individual technique, the new weighting values of condition assessment items were proposed, and the fault points and fault indices of reinforced earth retaining walls were proposed. Results showed that the rank of the weighting value of the condition evaluation items was fluctuated according to the multiple regression analysis, AHP technique, and entropy technique. There was no duplication of the rank of the weighting value while the current weighting value was overlapped. Specially, in the rsults of multi regression analysis, two condition assessment items were occupied 70% of the total weights. When the proposed weighting values were applied to existing reinforced earth retaining wall of 161, 16 reinforced earth retaining walls showed the increased risk rank and 31 represented the decreased risk rank.

본 연구에서는 보강토 옹벽 점검 자료를 바탕으로 보강토 옹벽의 상태평가항목의 가중치를 새롭게 제안하고 결함점수 및 결함지수를 제안하였다. 161개소의 보강토 옹벽의 점검결과를 근거로 다중회귀분석과 엔트로피 기법을 이용하여 상태평가항목별 가중치를 산정하였으며, 또한 전문가를 대상으로 AHP 기법을 활용하여 평가항목별 가중치를 산정하였다. 각 기법에서 도출된 가중치를 활용하여 혼한 가중치를 제안하였으며, 제안 가중치를 토대로 결함점수 및 결함지수를 제안하여 기존 161개소 현장에 적용하여 현재의 가중치와 제안 가중치에 의한 현장별 위험도 순위를 비교 분석하였다. 다중회귀분석, AHP 기법, 엔트로피 기법을 활용하여 분석한 결과 상태평가항목의 가중치 순위가 변동이 컸으며, 현재 상태평가항목의 가중치와 달리 가중치 순위의 중복은 발생하지 않았다. 특히, 다중회귀분석 결과에서는 특정 상태평가항목이 전체 가중치의 70% 이상을 차지하는 결과가 도출되었다. 제안한 혼합 가중치를 기존 보강토 옹벽 데이터에 적용한 결과, 상태평가항목의 가중치 중복은 발생하지 않았으며, 대상 보강토 옹벽 161 개소 중 16 개소의 위험도 순위 상승과 31 개소의 위험도 하락이 발생하였다.

Keywords

References

  1. Balali, V., Zahraie, B., and Roozbahani, A. (2014), A Comparison of AHP and PROMETHEE Family Decision Making Methods for Selection of Building Structural System, American Journal of Civil Engineering and Architecture, 2(5), 149-159. https://doi.org/10.12691/ajcea-2-5-1
  2. Han, J. G., Cho, S. D., Jeong, S. S., Lee, K. W., and Hong, K. K. (2005), Case Study on Global Slope Failure Case of Segmental Retaining Wall, Journal of The Korean Geosynthetics Society, 4(2), 47-56 (in Korean).
  3. Han, J. G., Kim, M. W., Hong, K. K., and Yun, J. M. (2014), Stability evaluation of reinforced earth walls based on large-scale modular blocks, Journal of The Korean Geosynthetics Society, 13(4), 143-151 (in Korean). https://doi.org/10.12814/jkgss.2014.13.4.143
  4. Hong, K. K., Han, J. G., Lee, J. Y., and Park, J. S. (2013), Analysis on Failure Causes and Stability of Reinforced Earth Wall Based on a Field Case, Journal of The Korean Geosynthetics Society, 12(1), 109-114 (in Korean).
  5. Ju, J. W., Park, J. B., and Na, H. H. (2011), Bulging of Reinforced Retaining Walls, Journal of The Korean Geosynthetics Society, 10(2), 45-53 (in Korean).
  6. Kim, B. I., Yu, W. K., Kim, K. M., and Lee, B. Y. (2013), A Case Study on Collapsed Geosynthetic Reinforced Segmental Retaining Wall, Journal of Korea Academia-Industrial Cooperation Society, 14(4), 2006-2012 (in Korean). https://doi.org/10.5762/KAIS.2013.14.4.2006
  7. Kim, C. S., Lee, M. K., and Lim, S. U. (2007), A Study on the Plan for Enhancing Internal Customer Satisfaction for Hybrid Weight, Journal of the Safety Management & Science, 9(6), 205-214 (in Korean).
  8. Kim, J. M., Cho, S. D., Lee, J. J., and Paik, Y. S. (2004), An Experimental Study on Characteristics of Earth Pressure Distribution for Segmental Reinforced Earth Wall, Journal of the Korean Geotechnical Society, 20(1), 83-90 (in Korean).
  9. Kim, J. M., Lee, D. Y., and Ma, S. J. (2006), Site Monitoring of the Retaining Wall Reinforced by Geogrids with Block Type Facings, Korea Institute for Structural Maintenance and Inspection, 10(1), 106-114 (in Korean).
  10. Korea Infrastructure Safety Corporation(2012), Guidance of Safety Check and Detailed Inspection for Retaining Wall (In Korean).
  11. Min, J. H. and Song, Y. M. (2003), PROMETHEE for Multicriteria Decision Making, Sogang Journal of Business, 14(2), 109-127 (in Korean)
  12. Nam, M. S., Do, J. N., and Kim, H. J. (2017), A Case Study of Repair and Rehabilitation on Reinforced Earth Wall, Proceedings for conference of the Korea Institute for Structural Maintenance and Inspection, 389-390 (In Korean).
  13. Park, J. K. and Lee, K. W. (2012), A Study on Practices and Troubles of Reinforced Soil Wall, Journal of The Korean Geosynthetics Society, 11(1), 65-75 (in Korean). https://doi.org/10.12814/jkgss.2012.11.1.065
  14. Song, Y. S. and Lee, B. S. (2007), A Case Study of Investigating Appropriate Replacement Area for the Stability of Reinforced Retaining Walls on Soft Ground, Korea Institute for Structural Maintenance and Inspection, 11(6), 113-119 (In Korean).
  15. Shannon, C. E. and Weaver, W. (1949), The Mathematical Theory of Communication, The University of Illinois Press, Urbana, Illinois, USA.
  16. Won, C. H. and Han, K. S. (2010), The Optimal Performance Evaluation Method for the Evaluation of Performance Persistency of Stock Funds, Korean Association of Industrial Business Administration, 25(4), 395-422 (in Korean).
  17. Won, M. Soo., Kim, H. J., Kim, Y. S., and Choi, J. H. (2013), A Case Study on the Restoration of Collapsed Geosynthetics Reinforced Soil Wall Using Limit Equilibrium and Numerical Analyses, Journal of the Korean Geotechnical Society, 29(11), 107-118 (in Korean). https://doi.org/10.7843/kgs.2013.29.11.107
  18. Yoo, C. S., Jeon, S. S., Kim, K. Y., Jung, H. S., Lee, B. W., and Jeon, H. Y. (2005), Failure Mechanism of Geosynthetic Reinforced Segmental Retaining Wall in Tiered Configuration Using Reduced-scale Model Tests, Journal of the Korean Geotechnical Society, 21(3), 65-77 (in Korean).
  19. Yoo, C. S., Jung, H. S., and Lee, S. W. (2004), A Case Study of The Collapsed Reinforced-Soil Retaining Wall, Journal of The Korean Geosynthetics Society, 3(2), 13-21 (in Korean).
  20. Yoon, W. S., Park, J. K., and Chae, Y. S. (2016), A Study on the Characteristics of Behavior of Block-type Reinforced Earth Retaining Wall Considering Failure Surface, Journal of The Korean Geosynthetics Society, 15(3), 13-26 (in Korean).
  21. Zou, Z. H., Yun, Y., and Sun, J. N. (2006), Entropy method for determination of weight of evaluating indicators in fuzzy synthetic evaluation for water quality assessment, Journal of Environment Sciences, 18(5), 1020-1023. https://doi.org/10.1016/S1001-0742(06)60032-6

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