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JP-7856332-B2 - Dampers and buildings

JP7856332B2JP 7856332 B2JP7856332 B2JP 7856332B2JP-7856332-B2

Inventors

  • 池永 昌容
  • 内原 啓吾

Assignees

  • 学校法人 関西大学

Dates

Publication Date
20260511
Application Date
20240305

Claims (8)

  1. A cylinder filled with fluid, A piston that is displaceable relative to the cylinder divides the inside of the cylinder into a first chamber and a second chamber, A connecting pipe that connects the first chamber and the second chamber, and which allows the fluid to flow from the first chamber to the second chamber or from the second chamber to the first chamber as the piston is displaced, A rotating body is provided in the middle of the aforementioned connecting pipe and rotates due to the flow of the fluid in the connecting pipe, A first weight that rotates in conjunction with the rotation of the aforementioned rotating body, Equipped with, As the rotation radius of the first weight changes in accordance with the movement of the piston, the moment of inertia of the first weight changes. The device further comprises a tension member extending in a first direction from the first weight, When the point at which the tension member changes direction from the first direction to the second direction is defined as the direction change point, A damper in which the distance between one end of the tension member connected to the first weight and the direction change point changes in accordance with the amount of displacement of the piston relative to the cylinder.
  2. A cylinder filled with fluid, A piston that is displaceable relative to the cylinder divides the inside of the cylinder into a first chamber and a second chamber, A connecting pipe that connects the first chamber and the second chamber, and which allows the fluid to flow from the first chamber to the second chamber or from the second chamber to the first chamber as the piston is displaced, A rotating body is provided in the middle of the aforementioned connecting pipe and rotates due to the flow of the fluid in the connecting pipe, A first weight that rotates in conjunction with the rotation of the aforementioned rotating body, Equipped with, As the rotation radius of the first weight changes in accordance with the movement of the piston, the moment of inertia of the first weight changes. The device further comprises a tension member extending in a first direction from the first weight, When the point at which the tension member changes direction from the first direction to the second direction is defined as the direction change point, A damper in which the distance between the other end of the tension member, opposite to the end connected to the first weight, and the direction change point changes in accordance with the amount of displacement of the piston relative to the cylinder.
  3. A cylinder filled with fluid, A piston that is displaceable relative to the cylinder divides the inside of the cylinder into a first chamber and a second chamber, A connecting pipe that connects the first chamber and the second chamber, and which allows the fluid to flow from the first chamber to the second chamber or from the second chamber to the first chamber as the piston is displaced, A rotating body is provided in the middle of the aforementioned connecting pipe and rotates due to the flow of the fluid in the connecting pipe, A first weight that rotates in conjunction with the rotation of the aforementioned rotating body, Equipped with, As the rotation radius of the first weight changes in accordance with the movement of the piston, the moment of inertia of the first weight changes. A guide section having multiple areas, A guided portion fixed to the cylinder and movable along the guide portion, A damper, which is an additional feature.
  4. A cylinder filled with fluid, A piston that is displaceable relative to the cylinder divides the inside of the cylinder into a first chamber and a second chamber, A connecting pipe that connects the first chamber and the second chamber, and which allows the fluid to flow from the first chamber to the second chamber or from the second chamber to the first chamber as the piston is displaced, A rotating body is provided in the middle of the aforementioned connecting pipe and rotates due to the flow of the fluid in the connecting pipe, A first weight that rotates in conjunction with the rotation of the aforementioned rotating body, Equipped with, As the rotation radius of the first weight changes in accordance with the movement of the piston, the moment of inertia of the first weight changes. The device further comprises a biasing member that biases the first weight in a direction that reduces the radius of rotation of the first weight, The device further comprises a tension member extending in a first direction from the first weight, When the point at which the tension member changes direction from the first direction to the second direction is defined as the direction change point, The biasing member is a damper that biases the tensioning member such that it increases the distance between the other end of the tensioning member opposite to the end connected to the first weight and the point of change of direction.
  5. A cylinder filled with fluid, A piston that is displaceable relative to the cylinder divides the inside of the cylinder into a first chamber and a second chamber, A connecting pipe that connects the first chamber and the second chamber, and which allows the fluid to flow from the first chamber to the second chamber or from the second chamber to the first chamber as the piston is displaced, A rotating body is provided in the middle of the aforementioned connecting pipe and rotates due to the flow of the fluid in the connecting pipe, A first weight that rotates in conjunction with the rotation of the aforementioned rotating body, Equipped with, As the rotation radius of the first weight changes in accordance with the movement of the piston, the moment of inertia of the first weight changes. A tension member that applies a force to the first weight in a direction that reduces the rotational radius of the first weight, A damper further comprising a stopper that defines the minimum value of the turning radius.
  6. A cylinder filled with fluid, A piston that is displaceable relative to the cylinder divides the inside of the cylinder into a first chamber and a second chamber, A connecting pipe that connects the first chamber and the second chamber, and which allows the fluid to flow from the first chamber to the second chamber or from the second chamber to the first chamber as the piston is displaced, A rotating body is provided in the middle of the aforementioned connecting pipe and rotates due to the flow of the fluid in the connecting pipe, A first weight that rotates in conjunction with the rotation of the aforementioned rotating body, Equipped with, As the rotation radius of the first weight changes in accordance with the movement of the piston, the moment of inertia of the first weight changes. A damper further comprising a second weight that does not rotate when the rotation radius is a first rotation radius, and rotates in conjunction with the rotation of the first weight when the rotation radius is a second rotation radius that is larger than the first rotation radius .
  7. The damper according to claim 1, wherein the axis of rotation of the rotational motion of the first weight is parallel to the vertical direction.
  8. A damper according to any one of claims 1 to 7 , The first structure and The second structure and A building comprising an elastic body connected in series with the damper between the first structure and the second structure.

Description

Applicable to Article 30, Paragraph 2 of the Patent Law ・Name of research meeting: Room 621, Building 6, Osaka Institute of Technology Venue: Architectural Institute of Japan Kinki Branch Research Presentation Meeting, 2023 Date: June 24, 2023 ・Name of publication: "Architectural Institute of Japan Kinki Branch Research Report Collection, 2023: Structural Systems" Publication date: June 24, 2023 ・Name of research meeting: Architectural Institute of Japan 2023 Annual Meeting Venue: Kyoto University Date: September 13, 2023 ・Name of publication: "Abstracts of Academic Lectures at the Architectural Institute of Japan Annual Meeting" Publication date: August 10, 2023 ・Name of research meeting: Master's Research Presentation Meeting, Department of Environmental and Urban Engineering, Graduate School of Science and Engineering, Kansai University, 2023 Venue: Room 4102, Building 4, 4th Campus, Kansai University Date: February 19, 2024 ・Name of publication: "Abstracts of Academic Lectures, Department of Environmental and Urban Engineering, Graduate School of Science and Engineering, Kansai University, 2023 "Collection of Master's Thesis Abstracts, Department of Architecture" Publication Date: February 15, 2024 • Research Meeting Name: Kansai University Faculty of Environmental and Urban Engineering, Department of Architecture, 2023 Academic Year Graduation Thesis Presentation (Structural and Environmental Systems) Venue: Kansai University, Building 4, Room 4103 Date: February 17, 2024 • Publication Name: "Collection of Abstracts from the Kansai University Faculty of Environmental and Urban Engineering, Department of Architecture, 2023 Academic Year Graduation Thesis Presentation (Structural and Environmental Systems)" Publication Date: February 14, 2024 This invention relates to a damper and a building equipped with the damper. One means of reducing the impact of earthquakes on buildings is to install seismic isolation devices. These devices comprise isolators that reduce the building's acceleration and dampers that reduce the building's displacement. Examples of dampers are disclosed in Patent Documents 1 and 2. Japanese Patent Publication No. 2015-206381Japanese Patent Publication No. 2020-29910 This is a cross-sectional view showing the structure of a building according to Embodiment 1.This is a plan view of the damper according to Embodiment 1, as seen from vertically above.This is a side view of the damper according to Embodiment 1, as seen from the horizontal direction.This is a schematic diagram of a damper according to Embodiment 1.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to Embodiment 1.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to Embodiment 1.This graph shows an example of the response magnification of the damper according to Embodiment 1 when the building displacement is small.This graph shows an example of the response magnification of the damper according to Embodiment 1 when the building displacement is small.This graph shows an example of the response magnification of the damper according to Embodiment 1 when the building displacement is large.This graph shows an example of the response magnification of the damper according to Embodiment 1 when the building displacement is large.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to a modified example of Embodiment 1.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to a modified example of Embodiment 1.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to Embodiment 2.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to Embodiment 2.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to Embodiment 3.This figure shows an example of the operation of the moment of inertia fluctuation mechanism according to Embodiment 3. [Embodiment 1] An embodiment of the present invention will be described in detail below. In each drawing, two mutually orthogonal directions in the horizontal plane are defined as the X direction and the Y direction, and the vertical direction is defined as the Z direction. Also, in each drawing, for simplicity, reference numerals may be assigned to only some of the multiple members that should be assigned the same numeral. Figure 1 is a cross-sectional view showing the structure of a building 100 according to Embodiment 1. As shown in Figure 1, the building 100 comprises a damper 1, a first structure 110, a second structure 120, and an elastic body 150. The first structure 110 is the foundation on which the building is installed. The second structure 120 is the building installed on top of the first structure 110. Damper 1 dampens vibrations transmitted from t