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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

地下水位低下に起因する地盤の遅れ圧密沈下のメカニズム

http://hdl.handle.net/2237/8632
http://hdl.handle.net/2237/8632
049b1d0c-fd59-4c14-a79e-81656a52804f
名前 / ファイル ライセンス アクション
v743_p89-103.pdf v743_p89-103.pdf (1.3 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-08-07
タイトル
タイトル 地下水位低下に起因する地盤の遅れ圧密沈下のメカニズム
言語 ja
その他のタイトル
その他のタイトル DELAYED COMPRESSION OBSERVED IN THE LAND SUBSIDENCE DUE TO DEWATERING
言語 en
著者 金田, 一広

× 金田, 一広

WEKO 18635

ja 金田, 一広

Search repository
KANEDA, Kazuhiro

× KANEDA, Kazuhiro

WEKO 18636

en KANEDA, Kazuhiro

Search repository
山田, 正太郎

× 山田, 正太郎

WEKO 18637

ja 山田, 正太郎

Search repository
YAMADA, Shotaro

× YAMADA, Shotaro

WEKO 18638

en YAMADA, Shotaro

Search repository
浅岡, 顕

× 浅岡, 顕

WEKO 18639

ja 浅岡, 顕

Search repository
ASAOKA, Akira

× ASAOKA, Akira

WEKO 18640

en ASAOKA, Akira

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 ja
権利情報 土木編集第07010号
キーワード
主題Scheme Other
主題 land subsidence
キーワード
主題Scheme Other
主題 one dimensional consolidation
キーワード
主題Scheme Other
主題 naturally sedimented clay
キーワード
主題Scheme Other
主題 dewatering
抄録
内容記述 地下水揚水に起因する自然体積粘土地盤の圧密沈下の諸特徴を調べた。自然堆積の粘土地盤は、つねに若干過圧密で、しかもたいていは「構造」が発達している。弾塑性構成式には、カムクレイモデルに下負荷面・上負荷面を導入したものを用い、塑性変形の進展に伴う過圧密の喪失と構造の劣化を表現できるようにした。一連の圧密計算によれば、地下水位低下がある閾値を越えて長く持続するときは、粘土の骨格構造の劣化によって塑性圧縮にもかかわらず軟化が起こり、これが原因となって時間遅れで大沈下が現れることが分かった。また多層系地盤のときは、地下水位低下の影響が下層の粘土に及ぶのに時間がかかり、このため現在かりに地盤低下が沈静化していても、将来遅れて大沈下の可能性があることも示した。
言語 ja
内容記述タイプ Abstract
抄録
内容記述 One-dimensional numerical simulations of land subsidence due to dewatering were preformed based on the soil-water coupled finite deformation analysis. Naturally deposited soils are usually at overconsolidated state and those soils are mostly at structured state. In order to express loss of overconsolidation and decay of soil structure with loading, the super-subloading surfaces were introduced to the Cam-clay model. The following findings were obtained : (1) when dewatering exceeds a certain level, delayed consolidation with huge settlement is observed, which is concluded as the results of plastic softening of soils with plastic volume compression. (2) When multi-layered system is the case, delayed compression/consolidation of lower layers may occur even after the finish of the settlement of upper layers. This is due to the delay of propagation of the increase of effective stress that occurs due to dewatering.
言語 en
内容記述タイプ Abstract
出版者
言語 ja
出版者 土木学会
言語
言語 jpn
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ISSN
収録物識別子タイプ PISSN
収録物識別子 0289-7806
書誌情報 ja : 土木学会論文集

巻 743, 号 III-64, p. 89-103, 発行日 2003-09
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/8632
識別子タイプ HDL
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