杭の水平載荷試験による多層地盤の横方向地盤反力係数の逆解析

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タイトル別名
  • Identification of Coefficient of Subgrade Reaction of Multilayers Based on In-situ Horizontal Loading Test of Piles
  • クイ ノ スイヘイサイカ シケン ニ ヨル タソウ ジバン ノ ヨコホウコウ ジバン ハンリョク ケイスウ ノ ギャクカイセキ

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説明

Coefficient of subgrade reaction of the rubble mound in the foundation of the open pier or the mooring post is identified by the Kalman filtering in conjunction with the transfer matrix method based on the measurement of in-situ experiments of piles. The existing surface clay layer is removed and the dilluvial clay layer is replaced by the rubble mound to shorten the length of the pile above the surface of the foundation deposit. In-situ experiments were carried out for both the existing clayey layer and the rubble mound. Measured data for the inclinometer is differentiated to obtain the moment and integrated to obtain the displacement along the pile, and they are used as the input for inverse analysis. Identified coefficient of the rubble mound using these measurements is less than that of the dilluvial clay under the same level of the loading. Numerical results provide useful information for the design of the open pier and its foundation.

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