TWI837870B - Multi-face friction type and intelligent multi-mode tuned mass damper vibration damping structure - Google Patents

Abstract

A vibration damping structure is disclosed. The vibration damping structure includes an outer frame, an inner frame, metal bars and a plurality of steel cables. The outer frame is arranged in a space formed by at least one vertical structure and at least one horizontal structure. The inner frame is arranged on the inner side of the outer frame. The metal bar is arranged between the outer frame and the inner frame. The plurality of steel cables are used to connect the metal bar to at least one vertical structure or at least one horizontal structure; thereby, when the building structure vibrates, the metal bar can contact with the outer frame or the inner frame to generate frictional force in-plane, and the metal strip will generate a reverse inertial force out-of-plane due to the swing.

Description

Multi-faceted friction and intelligent multi-modal tuned mass dampers for vibration reduction

The present invention relates to a vibration damping structure, in particular, a vibration damping structure that can utilize frictional force generated within a surface and inertial force generated outside a surface to reduce the vibration amplitude.

For countries located in earthquake zones, it is inevitable that they will encounter earthquakes of varying sizes. In order to reduce the damage caused by earthquakes, increasing the earthquake resistance of buildings is a very important issue. In the prior art, there is already a vibration-damping structure. Please refer to Figure 1, which is a schematic diagram of the application of the vibration-damping structure of the prior art.

In the prior art, the interior of the building structure 91 may have a plurality of vibration-damping structures 92. The vibration-damping structure 92 may be a hydraulic damper, which is installed between the beams and columns of the floors. When an earthquake occurs, the liquid in the hydraulic cylinder of the vibration-damping structure 92 flows due to the speed, which generates a compression effect to suppress the force of shaking with resistance. Therefore, part of the earthquake energy can be dissipated and the vibration amplitude of the building structure 91 can be reduced. However, the hydraulic damper of the prior art is expensive, and the possible vibration direction must be considered during installation, and it is also impossible to make a special design for the shape of the building structure 91.

Therefore, it is necessary to invent a new vibration reduction structure to solve the shortcomings of previous technologies.

The main purpose of the present invention is to provide a vibration reduction structure that can utilize the friction force generated within the surface and the inertial force generated outside the surface to reduce the vibration amplitude.

To achieve the above-mentioned purpose, the vibration-damping structure of the present invention is used in the wall panel of a building structure, and the building structure includes at least one vertical structure and at least one horizontal structure. The vibration-damping structure includes an outer frame, an inner frame, a metal bar and a plurality of steel cables. The outer frame is arranged in the space formed by at least one vertical structure and at least one horizontal structure. The inner frame is arranged on the inner side of the outer frame. The metal bar is arranged between the outer frame and the inner frame. A plurality of steel cables are used to connect the metal bars to at least one vertical structure or at least one horizontal structure; thereby, when the building structure vibrates, the metal bars can contact the outer frame or the inner frame to generate friction in the plane, and the metal bars will generate inertial forces out of the plane due to the swing, thereby reducing the vibration amplitude of the building structure.

Prior art

91: Building structure

92:Vibration-damping structure

The present invention

1: Building structure

2: Vertical structure

3: Horizontal structure

10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h: Vibration-damping structure

21: Outer frame

22a, 22b, 22c, 22d: Inner frame

23: Stainless steel layer

31a, 31b, 31c, 31d: Metal bars

32: Steel cable

Figure 1 is a schematic diagram of the vibration reduction structure of the prior art.

FIG2A is a schematic diagram of the first embodiment of the vibration reduction structure of the present invention.

FIG2B is a schematic diagram of the first embodiment of the vibration-damping structure of the present invention used for the wall panel of a building structure.

FIG3A is a cross-sectional schematic diagram of the first embodiment of the vibration-damping structure of the present invention.

FIG3B is a cross-sectional schematic diagram of the second embodiment of the vibration-damping structure of the present invention.

FIG3C is a cross-sectional schematic diagram of the third embodiment of the vibration-damping structure of the present invention.

FIG3D is a cross-sectional schematic diagram of the fourth embodiment of the vibration-damping structure of the present invention.

Figure 4 is a schematic diagram of the fifth embodiment of the vibration reduction structure of the present invention.

Figure 5 is a schematic diagram of the sixth embodiment of the vibration reduction structure of the present invention.

Figure 6 is a schematic diagram of the seventh embodiment of the vibration reduction structure of the present invention.

Figure 7 is a schematic diagram of the eighth embodiment of the vibration reduction structure of the present invention.

In order to enable the review committee to better understand the technical content of the present invention, the preferred specific implementation examples are described below.

Please refer to FIG. 2A, which is a schematic diagram of the first embodiment of the vibration-damping structure of the present invention, and FIG. 2B, which is a schematic diagram of the first embodiment of the vibration-damping structure of the present invention used for the wall panel surface of a building structure.

In the first embodiment of the present invention, the vibration-damping structure 10a is used in the facade frame of a building structure 1, and the building structure 1 includes at least one vertical structure 2 and at least one horizontal structure 3. The vertical structure 2 can be a column or a wall, and the horizontal structure 3 can be a beam or a floor. The vibration-damping structure includes an outer frame 21, an inner frame 22a, a metal bar 31a and a plurality of steel cables 32. The outer frame 21 and the inner frame 22a are both arranged in a space formed by the at least one vertical structure 2 and the at least one horizontal structure 3, for example, they can be arranged in a wall or a floor. The inner frame 22a is also arranged on the inner side of the outer frame 21, and can be rectangular like the outer frame 21, but the present invention is not limited to this. A single metal bar 31a is disposed between the outer frame 21 and the inner frame 22a. The metal bar 31a can be in slight contact with the outer frame 21 and the inner frame 22a or maintain a distance of several millimeters. A plurality of steel cables 32 anchor the metal bar 31a to the at least one vertical structure 2 or the at least one horizontal structure 3. The present invention does not limit the number of steel cables 32 connected to the metal bar 31a. The horizontally disposed steel cables 32 are connected to the vertical structures 2 on both sides, and the vertically disposed steel cables 32 are connected to the upper and lower horizontal structures 3. The steel cables 32 can be connected to the metal bar 31a, and the plurality of steel cables 32 will not contact each other.

The interior of the building structure 1 of FIG. 2B can be divided into multiple floors and multiple compartments by the vertical structure 2 and the horizontal structure 3, but the present invention does not limit the number. Therefore, the building structure 1 can have a plurality of vibration-damping structures 10a, and the plurality of vibration-damping structures 10a are respectively arranged between the beams or wall slabs of the floors. When an earthquake occurs, the vibration-damping structure 10a is deformed by the pressure in the in-plane of the structure and contacts with the outer frame 21 or the inner frame 22a to generate friction. In addition, after the building structure 1 vibrates, the metal bar 31a swings out-of-plane to generate the energy dissipation and vibration reduction effect of the inertial force. These two forces are independently generated between the three-dimensional building structure 1 to jointly resist and suppress the forces during earthquake or wind shaking. In this way, the vibration-damping structure 10a can be equivalent to a combination of a multi-faceted friction damper and an intelligent multi-modal tuned mass damper, so it can dissipate part of the earthquake or wind energy and reduce the vibration amplitude of the building structure 1.

Please also refer to Figure 3A, which is a cross-sectional schematic diagram of the first embodiment of the vibration-damping structure of the present invention.

In the first embodiment of the present invention, the cross section of the plurality of metal bars 31a is a rectangle, and the steel cable 32 is connected in series at the center of the cross section of the metal bars 31a. The outer frame 21 and the inner frame 22a are in contact with the plurality of metal bars 31a via a stainless steel layer 23. Thus, when the building structure 1 vibrates, the metal bars 31a can contact with the outer frame 21 or the inner frame 22a to generate friction force in the plane or generate inertial force out of the plane due to the swing of the metal bars 31a. The vibration-damping structure 10a is equivalent to an in-plane friction type and an out-of-plane tuned mass damper. The multi-faceted friction force and multi-modal inertial force generated can reduce the vibration amplitude of the building structure 1.

Please also refer to Figure 3B, which is a cross-sectional schematic diagram of the second embodiment of the vibration-damping structure of the present invention.

In the second embodiment of the present invention, the cross-section of the plurality of metal bars 31b of the vibration-damping structure 10b is a circle. At this time, the contact between the metal bar 31b and the outer frame 21 or the inner frame 22a will also generate in-plane friction force, and the swing of the metal bar 31a outside the surface will generate inertial force.

Different shapes of building structures 1 may require different designs of vibration-damping structures 10. Please refer to FIG. 3C for a cross-sectional schematic diagram of the third embodiment of the vibration-damping structure of the present invention and FIG. 3D for a cross-sectional schematic diagram of the fourth embodiment of the vibration-damping structure of the present invention.

In the third and fourth embodiments of the present invention, the cross-section of the metal bar 31c of the vibration-damping structure 10c or the metal bar 31d of the vibration-damping structure 10d is not rectangular or circular, but has a special design. The cross-section of the metal bar 31c is similar to a bell shape, and the cross-section of the metal bar 31d is similar to a pentagon, so that the contact area of one side with the outer frame 21 or the inner frame 22a is larger than the contact area of the other side, and the contact surface shapes between the plurality of metal bars 31c, 31d and the outer frame 21 and the inner frame 22a are matched with each other. For example, the contact area between the metal bar 31c and the inner frame 22a is significantly larger than the contact area between the metal bar 31c and the outer frame 21, so the friction generated between the metal bar 31c and the inner frame 22a is the direction force of the contact inclined surface. The inclined friction force and the axial force resistance of the contact angle can reduce the torque transmission between the upper and lower floors, thereby reducing the torsion angle of the upper and lower floors. Therefore, the vibration damping structure 10c is a torsion-resistant structure, which is suitable for being placed at the four corners of the plane of the building structure 1. The above-mentioned vibration damping structures 10a to 10d can be mixed and set at different floor positions in the building structure 1 as shown in Figure 2B according to the need for torsion resistance, and can also be used in the fifth to eighth embodiments below.

Next, please refer to Figure 4, which is a schematic diagram of the fifth embodiment of the vibration reduction structure of the present invention.

In the fifth embodiment of the present invention, the vibration-damping structure 10e includes a plurality of inner frames 22b, and the inner frames 22b are triangular. The metal bars 31a to 31d and the steel cables 32 are also arranged obliquely to match the shape of the inner frames 22b.

Next, please refer to Figure 5, which is a schematic diagram of the sixth embodiment of the vibration reduction structure of the present invention.

In the sixth embodiment of the present invention, the inner frame 22c of the vibration-damping structure 10f is a plurality of rectangles, so the metal bars 31a to 31d and the steel cable 32 are also arranged in accordance with the number of the inner frame 22c.

Finally, please refer to Figure 6, which is a schematic diagram of the seventh embodiment of the vibration reduction structure of the present invention.

In the seventh embodiment of the present invention, the vibration-damping structure 10g has a plurality of trapezoidal inner frames 22d, and the metal bars 31a to 31d and the steel cables 32 are also arranged to match the shapes and quantities of the plurality of inner frames 22d.

Finally, please refer to Figure 6, which is a schematic diagram of the eighth embodiment of the vibration reduction structure of the present invention.

In the eighth embodiment of the present invention, a plurality of metal bars 31a to 31d are provided between the outer frame 21 and the inner frame 22a on each side of the vibration damping structure 10h, rather than the embodiment of providing one metal bar 31a to 31d on the same side as shown in FIG. 2a. In this eighth embodiment, the vibration damping structure 10h can also generate friction force within the surface and inertial force outside the surface.

Through the above structure, the metal bars 31a to 31d and the steel cable 32 of the vibration-damping structures 10a to 10h of the present invention can be arranged in the horizontal direction, vertical direction, inclined direction or even in the arc direction. Therefore, when the building structure 1 vibrates, the vibration-damping structures 10a to 10h can not only use the inertial force outside the surface to reduce vibration, but also effectively provide friction inside the surface to reduce the vibration amplitude and torsion angle. The vibration-damping structures 10a to 10h can be flexibly designed or configured according to the shape or vibration direction of the building structure 1, which can effectively solve the shortcomings of the previous technology.

In summary, the present invention shows its characteristics that are different from the prior art in terms of purpose, means and effect. We sincerely request the review committee to examine and grant the patent as soon as possible to benefit the society. However, it should be noted that the above-mentioned many examples are only given for the convenience of explanation. The scope of rights claimed by the present invention should be based on the scope of the patent application, and is not limited to the above-mentioned examples.

1: Building structure

2: Vertical structure

3: Horizontal structure

10a: Vibration-damping structure

21: Outer frame

22a: Inner frame

23: Stainless steel layer

31a:Metal bars

32: Steel cable

Claims (13)

A vibration-damping structure is used in a wall panel of a building structure. The building structure includes at least one vertical structure and at least one horizontal structure. The vibration-damping structure includes: an outer frame body, which is arranged in a wall panel space formed by the at least one vertical structure and the at least one horizontal structure; an inner frame body, which is arranged in the wall panel space formed by the at least one vertical structure and the at least one horizontal structure and is located on the inner side of the outer frame body; a metal bar block, which is arranged in the outer frame body; between the outer frame and the inner frame; and a plurality of steel cables are used to connect the metal bar to the at least one vertical structure or the at least one horizontal structure; thereby, when the building structure vibrates, the metal bar can contact the outer frame or the inner frame to generate a friction force in the plane (In-plane), and the metal bar will generate an inertial force out of the plane (Out-of-plane) due to the swing, so as to reduce the vibration amplitude of the building structure. The vibration-damping structure as described in claim 1, wherein the outer frame and the inner frame are in contact with the metal bar via a stainless steel layer. A vibration-damping structure as described in claim 1, wherein the cross-section of the metal bar is a rectangle. A vibration-damping structure as described in claim 1, wherein the cross-section of the metal bar is a circle. A vibration-damping structure as described in claim 1, wherein the contact area between one side of the metal bar and the outer frame or the inner frame is larger than the contact area between the other side. A vibration-damping structure as described in any one of claims 3 to 5, wherein the shapes of the contact surfaces between the metal bar and the outer frame and the inner frame are matched with each other. The vibration-damping structure as described in claim 1, wherein the plurality of steel cables are connected in series at the cross-sectional center of the metal bar. A vibration-damping structure as described in claim 1, wherein the plurality of steel cables do not contact each other. The vibration-damping structure as described in claim 1, wherein the inner frame is a rectangle. The vibration-damping structure as described in claim 1, wherein the inner frame is a triangle. The vibration-damping structure as described in claim 1, wherein the inner frame is a trapezoid. A vibration damping structure as described in any one of claims 9 to 11, wherein the vibration damping structure comprises a plurality of inner frames, wherein the metal bar is further disposed between the inner frame and another inner frame. The vibration-damping structure as described in claim 12, wherein there are a plurality of metal bars between the outer frame and the inner frame, or between the inner frame and another inner frame, and the plurality of steel cables are further connected between the plurality of metal bars.