A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MARINE GRAVITY-BASED FOUNDATION
To provide a marine gravity-base foundation allowing resistance performance against omnidirectional horizontal force to be improved.SOLUTION: A marine gravity-based foundation 11 has a bottom part 12 located on a sea bottom 13, wherein a concave or convex cone surface 14 is formed on a lower surface of the bottom part 12, the cone surface 14 and the sea bottom are tightly adhered to each other. Resistance force R generated by friction between the sea bottom 13 and the bottom part 12 in accordance with horizontal force P is R=r×W in a case of a dead weight W of the marine gravity-based foundation 11, the horizontal force P acting on the bottom part 12, and a coefficient r sharing the horizontal force. As the coefficient r increases according to a gradient angle θ with inclination in a friction direction, the resistance force are able to be increased. The gradient angle θ of the cone surface 14 is 1 degree or more to 10 degree or less. Scouring-protection bodies 18 expanding downward are arranged around the bottom part 12.SELECTED DRAWING: Figure 2
【課題】全方位からの水平力に対する抵抗性能を高められる海洋重力式基礎を提供する。【解決手段】海洋重力式基礎１１は、底部１２が海底１３に載置され、底部１２の下面には凹状または凸状の錐体面１４が形成され、錐体面１４と海底とが密接されている。海洋重力式基礎１１の自重Ｗ、底部１２にかかる水平力Ｐ、水平力を分担する係数ｒとして、水平力Ｐに応じて海底１３と底部１２との摩擦により生じる抗力ＲはＲ＝ｒ×Ｗとなる。この係数ｒは摩擦方向が傾斜することで勾配角度θに応じて増加し、従って抗力Ｒを増大させることができる。錐体面１４の勾配角度θは１度以上で１０度以下である。底部１２の周囲には下向きに拡がる錐台状の洗掘防止体１８が設けられている。【選択図】図２
MARINE GRAVITY-BASED FOUNDATION
To provide a marine gravity-base foundation allowing resistance performance against omnidirectional horizontal force to be improved.SOLUTION: A marine gravity-based foundation 11 has a bottom part 12 located on a sea bottom 13, wherein a concave or convex cone surface 14 is formed on a lower surface of the bottom part 12, the cone surface 14 and the sea bottom are tightly adhered to each other. Resistance force R generated by friction between the sea bottom 13 and the bottom part 12 in accordance with horizontal force P is R=r×W in a case of a dead weight W of the marine gravity-based foundation 11, the horizontal force P acting on the bottom part 12, and a coefficient r sharing the horizontal force. As the coefficient r increases according to a gradient angle θ with inclination in a friction direction, the resistance force are able to be increased. The gradient angle θ of the cone surface 14 is 1 degree or more to 10 degree or less. Scouring-protection bodies 18 expanding downward are arranged around the bottom part 12.SELECTED DRAWING: Figure 2
【課題】全方位からの水平力に対する抵抗性能を高められる海洋重力式基礎を提供する。【解決手段】海洋重力式基礎１１は、底部１２が海底１３に載置され、底部１２の下面には凹状または凸状の錐体面１４が形成され、錐体面１４と海底とが密接されている。海洋重力式基礎１１の自重Ｗ、底部１２にかかる水平力Ｐ、水平力を分担する係数ｒとして、水平力Ｐに応じて海底１３と底部１２との摩擦により生じる抗力ＲはＲ＝ｒ×Ｗとなる。この係数ｒは摩擦方向が傾斜することで勾配角度θに応じて増加し、従って抗力Ｒを増大させることができる。錐体面１４の勾配角度θは１度以上で１０度以下である。底部１２の周囲には下向きに拡がる錐台状の洗掘防止体１８が設けられている。【選択図】図２
MARINE GRAVITY-BASED FOUNDATION
海洋重力式基礎
KASAHARA HIROTSUGU (author) / NAKAMURA NAOSHI (author)
2024-07-19
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen