Characterization of Vertical Bearing Capacity of Sheet-Piles

Taenaka, Shinji; Otani, Jun; Sato, Takahiro

doi:10.2208/jscejc.63.285

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…It is thought that the interactions between the soil and the pile surface were minimized in the case of Rot 100%, indicating that it is an optimal installation method. These results are similar to other findings about driving phases using different piles in previous research studies also using X-ray CT scans (Otani 2004, Taenaka 2007, Kikuchi 2008.…”

Section: Relationship Between Rotary Condition and Resistancesupporting

confidence: 92%

Effect of shaft rotation of driven spiral piles on vertical bearing capacity

Sato

Otani

Chevalier

et al. 2016

JGS Special Publication

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This study explores the production of a new type of pile. This new spiral pile is made of a twisted steel plate, creating a continuous spiral shape. Before starting the large-scale production of these piles, it is necessary to experimentally determine their bearing qualities, which are related to installation method. It is also necessary to develop an analytical model to determine their bearing capacity. The purpose of this study is to determine the bearing qualities of the spiral pile and the behavior of the surrounding ground. Considering this, the first objective is to examine the incidence of the shape of the pile. The installation method and penetration resistances are thoroughly discussed on the basis of the results of static loading tests using model piles. The static penetration tests were conducted under various shaft rotary conditions at the model pile head. It was confirmed that the shaft rotary condition has a significant impact on the penetration resistance and vertical bearing capacity of the spiral pile. The second objective is to show the behavior of the ground before and during penetration using X-ray computerized tomography (CT). An industrial X-ray CT scanner was used to observe changes in the density of the sand surrounding the spiral piles before and during penetration. The disturbance area of the ground surrounding the spiral pile was observed using CT images; the images revealed that the disturbance area surrounding the spiral pile was significantly affected by shaft rotary conditions.

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Section: Relationship Between Rotary Condition and Resistancesupporting

confidence: 92%

Effect of shaft rotation of driven spiral piles on vertical bearing capacity

Sato

Otani

Chevalier

et al. 2016

JGS Special Publication

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Experimental Study on the Seismic Performance of the Sheet-Pile Foundation

Higuchi¹,

Tanaka²,

Koda³

et al. 2008

JSCE JOURNAL OF STRUCTURAL AND EARTHQUAKE ENGINEERING

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A Study for Characteristic of Lateral Resistance of Footing Foundation With Sheet Piles by Static Loading Test

Nishioka¹,

Koda²,

Tateyama³

et al. 2008

JSCE JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING

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2 正会員鉄道総合技術研究所構造物技術研究部(同上) 3 正会員株式会社大林組生産技術本部都市土木技術部(〒108-8502 東京都港区港南2-15-2) 4 正会員株式会社大林組技術研究所構造技術研究部(〒205-8558 東京都清瀬市下清戸4-640) 筆者らは，仮土留め用鋼矢板を本設利用する鋼矢板併用直接基礎(シートパイル基礎)を提案している．シートパイル基礎は，鋼矢板の地盤拘束効果による高い支持力および耐震性が期待できることから，直接基礎に比べて広い範囲の地盤条件へ適用が可能である．本研究では，シートパイル基礎の地震時の水平抵抗特性を把握するため，模型地盤における静的水平交番載荷実験を行った．その結果，直接基礎に比べて降伏震度，降伏剛性が上昇する他，地震時の累積沈下量も低減できることが明らかとなった．また改良効果の発現メカニズムについて考察を行い，シートパイルの軸力による抵抗成分が主体的であることを明らかにした．

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Characterization of Vertical Bearing Capacity of Sheet-Piles

Cited by 4 publications

References 2 publications

Effect of shaft rotation of driven spiral piles on vertical bearing capacity

Effect of shaft rotation of driven spiral piles on vertical bearing capacity

Experimental Study on the Seismic Performance of the Sheet-Pile Foundation

A Study for Characteristic of Lateral Resistance of Footing Foundation With Sheet Piles by Static Loading Test

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