EVALUATION OF TENSILE FORCE AT THE ANCHORED END OF THE BARRIER SHEET SPREAD ON THE SIDE SLOPE OF THE LANDFILL CAUSED BY COMPRESSION OF THE WASTE

XU Sifa, IMAIZUMI Shigeyoshi

doi:10.2208/jscej.2004.778_73

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Other Title

最終処分場斜面に敷設した遮水シートの固定部に働く引込み張力の評価
サイシュウショブンジョウシャメンニフセツシタシャスイシートノコテイブニハタラクヒキコミチョウリョクノヒョウカ

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Abstract

The barrier sheet is installed in the landfill to prevent for leachate to infiltrate into underground. The barrier sheet accepts drag-force by compacting work of disposed waste. However, a logical method to evaluate the tensile force creating at the anchored end of sheet has not been established until now. The authors present three methods, that is, (1) force equilibrium method considering earth pressure acting on vertical plane at toe of slope, (2) elastic method considering rigidity of barrier sheet, and (3) finite element method employing joint element between the components of the liner system. They also conducted centrifugal model tests of three layered liner system on the slope on landfill. In the tests, the thickness of barrier sheet is changed between 0.4mm and 2.0mm. It is found that finite element analysis gives tensile force creating at the anchored end of barrier sheet very close to experiments and elastic method gives the tensile force about two times larger than the experiments.

Journal

Doboku Gakkai Ronbunshu

Doboku Gakkai Ronbunshu 2004 (778), 73-84, 2004-12-21

Japan Society of Civil Engineers

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