掲載雑誌(和): | 日本地震工学シンポジウム論文集 |
Vol: | 10-2巻 |
年: |
1998年
|
頁: |
1781-1784頁
|
著者(和): |
兵頭 武志,秋吉 卓,渕田 邦彦,今中 康貴
|
タイトル(和): |
重力式岸壁の液状化土圧と地盤改良効果に関する一考察
|
抄録(和): |
重力式ケーソン岸壁は,自重に比例する底面の摩擦力で背後の地盤を支える構造となっており,海側からの拘束圧が弱いため,地震時の背後地盤の土圧や泥圧のために海側へ変位しやすい状況にある.本研究では,ケーソン周辺地盤の間隙水圧や土圧の変化とケーソン本体の変位との関係について調べるために,1g場の模型振動台実験および2次元有効応力解析を実施した.その結果,ケーソンに作用する背後の最大土圧と背後地盤の過剰間隙水圧が大きいほどケーソンの変位は大きくなり,対策として効果があるのは背後地盤の締固めであることがわかった.
|
キーワード(和): |
-
|
掲載雑誌(英): |
THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
|
著者(英): |
Takeshi HYODO,Takashi AKIYOSHI,Kunihiko FUCHIDA,Yasutaka IMANAKA
|
タイトル(英): |
EFFECTS OF SOIL IMPROVEMENT ON SEISMIC EARTH PRESSURE ACTING ON GRAVITY-TYPE QUAY WALLS
|
抄録(英): |
Gravity-caisson-type quay walls are statically protected from the backfill ground pressure by the frictional force at the bottom surface. However, they are easily displaced to seaward by the increment of soil pressure or mud pressure during earthquakes, because the pressure from sea side is very low. Shaking table tests in gravitational field and 2-dimensional effective stress analyses were performed to investigate the relationship between the earth pressure and the displacement in the quay walls. As a result, it is shown that active earth pressure on the quay walls increases drastically due to excess pore water pressure in the backfill soil, drives the quay walls toward the sea side, and backfill soil improvement is more effective than the bottom side soil improvement for preventing the movement of quay wall.
|
キーワード(英): |
-
|
記事区分: |
-
|
区分: |
委員会論文集 |