|
Title |
Weighting Value Evaluation of Condition Assessment Item in Reinforced Earth Retaining Walls by Applying Hybrid Weighting Technique
|
|
Authors |
이형도(Hyung Do Lee) ; 원정훈(Jeong-Hun Won) ; 성주현(Joohyun Seong) |
|
DOI |
https://doi.org/10.11112/jksmi.2017.21.5.083 |
|
Keywords |
보강토 옹벽 ; 상태평가항목 ; 다중회귀분석 ; 엔트로피 기법 ; AHP 기법 ; 혼합 가중치 Weighting value ; Condition evaluation items ; Reinforced earth retaining wall ; Multi regression analysis ; Entropy technique ; AHP |
|
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.
|