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US 4,783,937 AGranted
Device for suppressing vibration of structure
AssigneeShimizu Construction Co., Ltd.
InventorTakanori Sato
Life of this patent
Estimating the term…
Abstract
A device for suppressing vibration of a structure such as buildings and bridges, including a tank, disposed in the structure, for receiving a liquid for suppressing vibration of the structure, the tank being adapted to contain such an amount of the liquid that the liquid is equal in natural period to the structure.
Claims27
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure,
- said first tank being adapted to contain such an amount of the first liquid that a ratio of effective mass of the first liquid over mass of the structure is about 1/50 to about 1/300,
- the structure having a center of rigidity and the first tank having an inner face;
- and
- first baffling means, mounted to the inner face of the first tank, for baffling a flow of the first liquid so as to suppress the swinging of the structure, the flow being caused due to swinging of the structure about the center of rigidity.
2 more elements
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure,
- said first tank being adapted to contain such an amount of the first liquid that a ratio of effective mass of the first liquid over mass of the structure is about 1/50 to about 1/300;
- and
- a horizontal partition wall horizontally partitioning first tank to define two chambers, each chamber being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure.
1 more element
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure,
- the first tank being adapted to contain such an amount of the first liquid that a ratio of effective mass of the first liquid over mass of the structure is about 1/50 to about 1/300;
- second baffling means for baffling another flow of the first liquid so as to prevent a sloshing phenomenon caused by resonance of the first liquid to the structure;
- moving means, mounted to the first tank, for vertically moving the second baffling means between a raised position and a lowered position at which the second baffling means is in the first liquid;
- and
- controlling means for detecting the sloshing phenomenon and then controlling the moving means to lower the second baffling means to the lowered position.
3 more elements
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure,
- the first tank being adapted to contain such an amount of the first liquid that a ratio of effective means of the first liquid over mass of the structure is about 1/50 to about 1/300, the structure being a building, and the first tank being disposed within the building.
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure,
- the first tank adapted to contain such an amount of the first liquid that a ratio of effective mass of the first liquid over mass of the structure is about 1/50 to about 1/300, the structure being a bridge having a plurality of towers, each tower having a top, and the first tank being mounted on the top of at least one of the towers.
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure,
- the first tank being adapted to contain such an amount of the first liquid that a ratio of effective mass of the first liquid over mass of the structure is about 1/50 to about 1/300,
- the structure being a bridge having a reinforced girder, and the first tank being mounted on the girder.
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure,
- the first tank being adapted to contain such an amount of the first liquid that a ratio of effective mass of the first liquid over mass of the structure is about 1/50 to about 1/300, the first tank being provided in a plurality.
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure.
- the first tank being adapted to contain such an amount of the first liquid that a ratio of effective mass of the first liquid over mass of the structure is about 1/50 to about 1/300;
- a second tank;
- and
- floating means for floating the second tank on the first liquid in the first tank, the second tank being mounted on the floating means, and the second tank being adapted to contain such an amount of the second liquid that the second liquid is equal in natural period to the first liquid, the ratio of effective mass of the second liquid over mass of the first liquid being about 1/50 to about 1/300.
2 more elements
A device for suppressing vibration of a structure, comprising:
- a first tank, disposed in the structure, for receiving a first liquid for suppressing vibration of the structure, the structure having a center of rigidity, the first tank being adapted to contain such an amount of the first liquid that the first liquid is equal in natural period to the structure, the first tank having an inner face and first baffling means mounted thereto for baffling a flow of the first liquid so as to suppress the swinging of the structure about the center of rigidity.
Dependencies are inferred from the claim text.