STATICAL AND DYNAMICAL SOIL-STRUCTURE INTERACTION BETWEEN DIAPHRAGM WALL AND ITS SURROUNDING SOIL IN THE EMBANKMENT DAM WITH DIAPHRAGM WALL UNDER SOIL CORE

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  • 連続地中壁を有するフィルダムの地中壁と地盤との静的・動的相互作用
  • レンゾク チチュウヘキ オ ユウスル フィル ダム ノ チチュウヘキ ト ジバ

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Abstract

The diaphragm cutoff walls have been lately adopted for foundation treatment of embankment dams constructed on alluvial deposits. It is significant for the engineers in design and construction of diaphragm wall to take into account of structural behaviors during earthquakes. This paper studies the statical and dynamical interaction between diaphragm wall and surroundings in above type of dams and their stability by means of numerical analysis on TADAMI dam. especially clarifies the effects of rigidity of diaphragm wall on their stability through comparing the behavior of whole structure in the case of bentonite concrete wall with the one in the case of conventional concrete. Besides, the characteristics in dynamic behavior of diaphragm walls of both materials are clarified through both in-situ vibration tests and their numerical simulations as well as the validity of the seismic response analysis applied to this studies are confirmed.

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