JP-2026075273-A - Vibration damping structure

Abstract

[Problem] In a vibration-damping structure in which vibration dampers that generate resistance to inter-story deformation of a structural plane formed by a column-beam frame are installed within the structural plane, the vibration dampers are made to exert a large damping force to enhance the vibration-damping effect. [Solution] A trapezoidal structural surface 11A, 11B, which is trapezoidal in front view, is formed on the column-beam frame 1, and the trapezoidal structural surface 11A, 11B or the upper floor side rectangular structural surface 12 located on the upper floor side of the trapezoidal structural surface 11A, 11B is designated as a damper installation structural surface 10A in which a vibration damping damper 20 is installed inside. [Selection Diagram] Figure 2

Inventors

• 渋谷 朋典
• 木原 隆志
• 安田 良河
• 坂和 知美

Assignees

• 株式会社竹中工務店

Dates

Publication Date

20260508

Application Date

20241022

Claims (4)

1. A vibration control structure comprising a column-beam frame structure in which vibration dampers are installed within the frame surface to generate resistance against inter-story deformation of the frame surface, A trapezoidal structural surface, which is trapezoidal in front view, is formed in the aforementioned column-beam frame. A vibration control structure in which the trapezoidal structural surface or the structural surface located on the upper floor side of the trapezoidal structural surface is a damper installation structural surface in which the vibration control damper is installed inside.
2. In the column-beam frame, a pair of first diagonal columns are provided that extend over multiple floors and are arranged to spread outwards from one another, and the trapezoidal structural plane is formed in each of the multiple floors between the pair of first diagonal columns. The vibration control structure according to claim 1, wherein at least a portion of the trapezoidal structural planes formed in each of the multiple levels between the pair of first diagonal columns is the damper installation structural plane.
3. The vibration control structure according to claim 2, wherein, among the trapezoidal structural surfaces formed on each of the multiple floor levels between the pair of first diagonal columns, the lower-floor trapezoidal structural surface located on the floor below the damper-installed structural surface is a damper-free structural surface where the vibration control damper is not installed.
4. The pair of first oblique columns are arranged with their upper ends spaced apart from each other. The vibration damping structure according to claim 2 or 3, wherein a second diagonal column is provided with respect to each of the pair of first diagonal columns, extending over multiple floor levels and arranged in an upward-spreading manner with its lower ends close to each other.

Description

This invention relates to a vibration control structure comprising a column-beam frame structure with vibration dampers installed within the frame to generate resistance against inter-story deformation of the frame. A vibration control structure is known in which vibration dampers are installed within a structural plane formed by a column-beam frame to generate resistance against inter-story deformation of the structural plane (see, for example, Patent Document 1). In such a vibration control structure, the structural plane formed by the column-beam frame is configured as a rectangular structural plane with a rectangular shape when viewed from the front. In such a rectangular structure, the inter-story deformation caused by horizontal forces applied to the column-beam frame due to earthquakes, etc., results in a relative displacement difference along the horizontal direction between the upper and lower beams. The vibration damping dampers installed in this rectangular structure operate with a stroke corresponding to this relative displacement difference, thereby exerting a resistive force. Japanese Patent Publication No. 2009-002117 Elevation drawing of a column-beam frame employing the vibration damping structure of this embodimentThis figure shows the vibration damping structure of this embodiment in its normal state (a) and during inter-story deformation (b). An embodiment of the vibration damping structure according to the present invention will be described with reference to the drawings. As shown in Figure 1, the vibration control structure of this embodiment (hereinafter referred to as "this vibration control structure") is constructed by installing vibration control dampers 20 that generate resistance to inter-story deformation of a structural plane formed by a column-beam frame 1 consisting of multiple columns 5 and beams 6. It is applied to buildings with multiple floors, such as office buildings and condominiums, and is intended to absorb and attenuate seismic energy and vibration energy acting on the building during earthquakes, strong winds, etc. Although Figures 1 and 2 show the structure for five floors of a building, the number of floors of a building to which this vibration control structure is applied can be changed as appropriate. Furthermore, this vibration damping structure employs a configuration that enhances the vibration damping effect by allowing the vibration damping damper 20 to exert a large damping force, and the details thereof will be explained below. As shown in Figure 1, the column-beam frame 1 has trapezoidal structural surfaces 11A and 11B formed as structural surfaces, which are trapezoidal in shape when viewed from the front. Specifically, a pair of first diagonal columns 5A1 and 5A2 are provided, extending over multiple floors and arranged in a downward-spreading manner, and trapezoidal structural surfaces 11A and 11B are formed on each of the multiple floors between this pair of first diagonal columns 5A1 and 5A2. In this embodiment, the first diagonal columns 5A1 and 5A2 are assumed to extend over three floors, and trapezoidal structural surfaces 11A and 11B are formed on each of the three floors, but the number of floors on which these trapezoidal structural surfaces 11A and 11B are formed can be changed as appropriate. Furthermore, the pair of first diagonal columns 5A1 and 5A2 described above are arranged with their upper ends spaced apart from each other. Second diagonal columns 5B1 and 5B2 are provided for each of these first diagonal columns 5A1 and 5A2, extending over multiple layers and having their lower ends close together and widening upwards. That is, a left-side first diagonal column 5A1 located on one side (the left side in Figure 1) of the trapezoidal structural planes 11A and 11B, and a left-side second diagonal column 5B1 located to the left of the left-side first diagonal column 5A1, are arranged with their lower ends close together and widening upwards, forming a left-side V-shaped column V1 that extends over multiple layers. Furthermore, to the right of the left V-shaped column V1, at a predetermined distance, is a right-side first diagonal column 5A2 located on the other side (right side in Figure 1) of the trapezoidal structural planes 11A and 11B, and a right-side second diagonal column 5B2 located to the right of the first diagonal column 5A1. These two columns are arranged in a V-shape when viewed from the front, with their lower ends close together and widening upwards. This configuration extends across multiple layers. In other words, since the pair of V-shaped columns V1 and V2 are arranged side-by-side with the first diagonal columns 5A1 and 5A2 positioned inward and their upper ends spaced apart, an excessive increase in the rigidity of the column-beam frame 1 is suppressed. The trapezoidal structural planes 11A and 11B can then be formed in each of the multiple layers between the respective first diagonal columns 5A1 and 5A2 of these pa