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논문 기본 정보

자료유형
학술대회자료
저자정보
D. T. Bergado (Asian Institute of Technology) M. Nualkliang (Asian Institute of Technology) P. Voottipruex (King Mongkut’s University of Technology)
저널정보
한국지반신소재학회 한국지반신소재학회 학술발표회 2011 한국토목섬유학회 국제심포지엄 및 추계학술발표회
발행연도
2011.11
수록면
95 - 109 (15page)

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초록· 키워드

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In this study, the K-stiffness method which is used to calculate the reinforcement load of mechanically stabilized earth (MSE) structures on hard foundation was investigated to be applied for reinforced structures. The mechanically stabilized earth wall/embankment was constructed in Phitsanulok Province, Thailand consisting of reinforced backfill with geosynthetics materials made of polymer geogrids and metallic reinforcements. The mechanism of reinforced earth involves the generation of frictional and bearing resistances at the interfaces between the soil and the reinforcement in order to create strong composite materials. This study also presents results of the laboratory large-scale direct shear test investigations on the interactions between soil and the reinforcements. The performances of grids reinforcements consisting of polyester (PET) and steel grids were compared using the K-stiffness method, FHWA method and AASHTO 2002 method. The results show that the K-stiffness method for internal design of polyester (PET) and steel grids of the mechanically stabilized earth (MSE) structures on hard foundation was verified. Consequently, the K-stiffness working stress method can be recommended for revisions of current conservative design method on hard foundation.

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ABSTRACT
1. INTRODUCTION
2. AASHTO SIMPLIFIED AND FHWA STRUCTURE STIFFNESS METHODS
3. ORIGINAL AND MODIFIED K-STIFFNESS METHODS
4. INTERFACE SHEAR STRENGTH FROM DIRECT SHEAR TEST
5. FULLY INSTRUMENTED TEST EMBANKMENT IN PHITSANULOK PROVINCE, THAILAND
6. VERTICAL SETTLEMENTS
7. STRAINS IN REINFORCEMENTS FROM MEASUREMENTS
8. COMPARISON POLYESTER (PET) AND STEEL GRIDS USING K-STIFFNESS METHOD
9. COMPARISON OF PREDICTED VERSUS MEASURED DATA
10. CONCLUSIONS
11. NOTATIONS
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2013-532-001119200