STABILITY EVALUATION OF HIGHWAY EMBANKMENT WITH DENSITY GRADIENT AND ITS QUALITY CONTROL STANDARD

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  • MASUMURA Kimihito
    社団法人土木学会 日本道路公団試験研究所道路研究部土工研究室
  • MIURA Seiichi
    社団法人土木学会 北海道大学大学院工学研究科
  • MISHIMA Nobuo
    社団法人土木学会 川崎地質株式会社

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  • 密度勾配を考慮した道路盛土の安定評価と品質管理基準に関する研究
  • ミツド コウバイ オ コウリョ シタ ドウロ モリド ノ アンテイ ヒョウカ ト ヒンシツ カンリ キジュン ニ カンスル ケンキュウ

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Abstract

A density gradient is occurred on vertical density distribution in the compacted layer for a thick-layer compaction method, which is aiming to improve an efficiency of construction of highway embankment. Therefore, it is necessary to establish a quality control standard, clarifying influence of the density gradient on a stability and settlement of the embankment. In this paper, changes in the density gradient of a compacted layer occurred by thick-layer compaction is studied based on a series of field compaction tests. Furthermore, influence of the density gradient on the stability of embankment is evaluated quantitatively at various density gradients, and a quality control standard is proposed.

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