CN210264111U

CN210264111U - Metal damper for improving seismic performance of building structure

Info

Publication number: CN210264111U
Application number: CN201920812149.8U
Authority: CN
Inventors: 王玉山; 周力强; 廖欢; 王锐; 周阳; 曾晓云; 牛爱宏; 吴楠; 段彦福; 朱斌
Original assignee: Shihezi University
Current assignee: Shihezi University
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-07
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a metal damper for improving building structure anti-seismic performance, be used for being fixed in the power consumption device of the circular arc structure on the fixed beam including two, two power consumption device's head and the tail both ends are articulated each other, and two power consumption device's circular arc structure's cambered surface outwards relatively. The utility model discloses a plastic deformation takes place for two power consumption devices under the earthquake effort that receives the structure transmission to take place the relative or relative motion that relapse under the effect of hysteresis deformation characteristic, consume the seismic force that the structure bore, the power consumption effect is showing, and the solution structure receives the vibrations power and leads to the plastic deformation problem, improves the anti-seismic performance of structure.

Description

Metal damper for improving seismic performance of building structure

Technical Field

The utility model relates to a building structure technical field and attenuator equipment technical field, especially a metal damper for improving building structure anti-seismic performance.

Background

With the high-speed development of national infrastructure, the requirement on building earthquake resistance is higher and higher, so that in order to improve the earthquake resistance of a building structure, the damper can be arranged in the building structure and used for consuming the earthquake capability borne by the structure, and the earthquake resistance of the building structure is improved.

Currently, the types of dampers used in building structures are numerous, but there are certain drawbacks in consuming seismic energy, such as: if the existing viscous damper consumes significant energy, but the oil leakage phenomenon exists in the use process, the local damping effect of the structure is not considerable, and the manufacturing cost is not economical; the friction damper is complex in structure and does not utilize replacement of the damping exchange member.

Therefore, it is necessary to research a metal damper for improving the earthquake resistance of a building structure, which consumes earthquake energy under the action of an earthquake, protects the safety of a main body of the structure, and has the advantages of easy replacement, remarkable energy consumption effect and low cost.

Disclosure of Invention

The utility model discloses a solve exist among the prior art not enough, provide a metal damper for improving building structure anti-seismic performance.

In order to achieve the purpose, the utility model is implemented according to the following technical scheme:

the utility model provides a metal damper for improving building structure anti-seismic performance, includes two power consumption devices that are used for being fixed in the circular arc structure on the fixed beam, two power consumption devices's end to end both ends are articulated each other, and two power consumption devices's the cambered surface of circular arc structure outwards relatively.

Further, the two energy consumption devices are respectively marked as a first energy consumption device and a second energy consumption device, each energy consumption device comprises an arc-shaped buffer plate and two connecting plates connected to two ends of the buffer plate, the first connecting plate of the first energy consumption device and the first connecting plate of the second energy consumption device are both U-shaped clamping pieces, the bottoms of the U-shaped clamping pieces are fixedly connected with the buffer plates, pin holes are formed in the upper portions of the opening ends of the U-shaped clamping pieces, the middle portions of the pin holes, penetrating through the end portions of the first connecting plates of the first energy consumption devices, of the second connecting plates of the second energy consumption devices are fixed through nuts, the middle portions, penetrating through the pin holes, of the end portions of the first connecting plates of the second energy consumption devices, of the first energy consumption devices and the end portions of the second connecting plates of the second energy consumption devices are fixedly connected with the fixed beams.

Preferably, the included angle between two connecting plates is a right angle, and the included angle formed between the two ends of the buffer plate and the circle center of the arc is smaller than or equal to 90 degrees.

Preferably, the end portions of the second connecting plates of the first energy consumption device and the second energy consumption device are respectively provided with a fixing plate for connecting the fixing beam, and the fixing plates are fixed on the fixing beam through screws.

Additionally, the utility model also provides a damping device for consolidating wood frame house, including the upper beam and the underbeam in wood frame house, fixed mounting has the metal damper who is used for improving building structure anti-seismic performance between upper beam and underbeam.

Compared with the prior art, the utility model is used for improve building structure anti-seismic performance's metal damper, this attenuator are installed in building structure, and plastic deformation takes place for two power consumption devices under the earthquake effort that receives the structure transmission to take place the relative or relative motion that relapse under the effect of hysteresis deformation characteristic, consume the earthquake power that the structure bore, the power consumption effect is showing, and the solution structure receives the vibrations power and leads to plastic deformation problem, improves the anti-seismic performance of structure.

The energy dissipation device is of an arc-shaped structure, is simple in structure, can be formed by bending, is easy to manufacture, is hinged with each other, and is simple to replace and low in maintenance cost after an earthquake occurs.

The energy consumption device is made of mild steel materials, and the mild steel has good hysteresis deformation characteristics, can bear large earthquake force and is not easy to damage.

Drawings

Fig. 1 is a schematic structural view of the damper of the present invention;

fig. 2 is a front view of the energy dissipation plate of the present invention;

fig. 3 is a side view of the energy dissipation plate of the present invention;

fig. 4 is a top view of the energy dissipation plate of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

As shown in fig. 1 to 4, the metal damper for improving the seismic performance of a building structure according to this embodiment includes two energy consuming devices of an arc structure for being fixed on a fixed beam, the head and the tail of the two energy consuming devices are hinged to each other, and the arc surfaces of the arc structures of the two energy consuming devices face outward, specifically, the two energy consuming devices are respectively denoted as a first energy consuming device 1 and a second energy consuming device 2, the first energy consuming device 1 and the second energy consuming device 2 include an arc-shaped buffer plate 101 and two first connecting plates 103 and two second connections 102 connected to two ends of the buffer plate 101, the first connecting plate 103 of the first energy consuming device 1 and the first connecting plate 103 of the second energy consuming device 2 are both U-shaped fasteners, the bottom of the U-shaped fastener is fixedly connected to the buffer plate 101, a pin hole 104 is formed in the upper portion of the open end of the U-shaped fastener, and a screw 7 penetrates through the pin hole 104 in the end of the first connecting plate 103 of the first energy consuming device 1 and the second The middle parts of the two connecting plates 102 are fixed by nuts 6, the screw 7 penetrates through a pin hole 104 at the end part of the first connecting plate 103 of the second energy consumption device 2 and the middle part of the second connecting plate 102 of the first energy consumption device 1 and is fixed by the nuts 6, the first connecting plate 103 of the first energy consumption device 1 and the first connecting plate 103 of the second energy consumption device 2 can rotate around the screw 7 after the screw 7 is connected with the nuts 6, and the end parts of the second connecting plates 102 of the first energy consumption device 1 and the second energy consumption device 2 are used for fixedly connecting fixed beams.

The damper is installed in a building structure, the two energy dissipation devices are subjected to plastic deformation under the earthquake acting force transmitted by the structure, and repeatedly relative or opposite movement is carried out under the action of the hysteresis deformation characteristic, so that the earthquake force borne by the beam and the column is consumed, the problem of plastic deformation caused by the fact that the structure is subjected to the vibration force is solved, and the earthquake resistance of the structure is improved.

In this embodiment, in order to ensure that the two energy consuming devices of the damper are plastically deformed under the earthquake acting force transmitted by the structure and can move repeatedly relatively or oppositely under the action of the hysteresis deformation characteristic, the included angle between the first connecting plate 103 and the second connecting plate 102 is a right angle, and the included angle formed between the two ends of the buffer plate 101 and the arc center of the circle is smaller than or equal to 90 °.

In actual use, the end portions of the second connecting plates 102 of the first energy consumption device 1 and the second energy consumption device 2 are provided with fixing plates 4 for connecting to a fixed beam, so that the damper is convenient to mount on the beam, for example, the fixing plates 4 are fastened to the fixed beam by screws 5.

The energy consumption device is made of mild steel, when the two buffer plates 101 of the first energy consumption device 1 and the second energy consumption device 2 are subjected to high-frequency vibration force conducted by the structure, the buffer plates are made of metal mild steel materials and have certain hysteresis characteristics, and the two buffer plates 101 are subjected to reciprocating stretching deformation and bending deformation under the action of the high-frequency vibration force, so that the high-frequency vibration force conducted by the beam and the column can be offset in the deformation process, and overlarge deformation of the structure is prevented.

When the metal damper for improving the earthquake resistance of the building structure is installed in the building structure, as shown in fig. 1, the metal damper for improving the earthquake resistance of the building structure is fixedly installed between an upper beam 8 and a lower beam 9, and as shown in fig. 1, after the metal damper for improving the earthquake resistance of the building structure is assembled, a fixing plate 4 of a first energy consumption device is fastened on the upper beam 8 by using a screw 5, and a fixing plate 4 of a second energy consumption device is fastened on the lower beam 9.

The damper is used as a main device for counteracting earthquake energy, and when an earthquake occurs, vibration force is transmitted to the upper beam 8 and the lower beam 9 along the fixed column, so that the fixed column, the upper beam 8 and the lower beam 9 generate high-frequency vibration, and the upper beam 8 and the lower beam 9 can also be understood to generate high-frequency up-and-down reciprocating swing on the top of the fixed column.

When the upper beam 8 and the lower beam 9 swing in opposite directions, the damper is stressed by the fixed beam, the first energy consumption device and the second energy consumption device are stressed, the two buffer plates are slightly deformed in a centripetal bending mode, the leftward or rightward pressure of the upper beam 8 and the lower beam 9 is offset in the deformation process, and meanwhile, the two buffer plates can move relatively when deformed, namely the distance between the two buffer plates 101 is increased, and the downward pressure of the fixed beam is further offset.

When the upper beam 8 and the lower beam 9 swing relatively, the pressure applied to the first energy consumption device 1 and the second energy consumption device 2 gradually disappears, and the buffer plates 101 of the first energy consumption device 1 and the second energy consumption device 2 gradually recover under the action of hysteresis characteristics until the upper beam 8 and the lower beam 9 reach a horizontal state, and the buffer plates 101 of the first energy consumption device 1 and the second energy consumption device 2 recover to an initial state; at this time, the upper beam 8 and the lower beam 9 continue to move relatively, the first energy consumption device 1 and the second energy consumption device 2 are under tension, the two buffer plates 101 are slightly stretched and deformed under the action of the tension, and the upward tension of the upper beam 8 and the lower beam 9 is counteracted in the deformation process.

In the repeated swinging process of the substructure, the damper repeats the above processes to counteract the vibration force of the structure until the vibration force disappears. The damper provides damping force according to the energy dissipation mechanism, so that the damper has good energy dissipation performance, and after the damper acts on an earthquake, a damping component is convenient to replace, the operation is simple, the application range is wide, and the cost is low. The damper adopts two energy dissipation devices made of mild steel, generates plastic deformation under the action of earthquake force, has good hysteretic characteristic after the mild steel enters a plastic state, and absorbs a large amount of energy in the elastic-plastic hysteretic deformation process, so that most of vibration force borne by the beam and the column can be consumed, and the stability of the beam and column nodes is improved; meanwhile, the energy consumption device made of mild steel is easier to process, stable in hysteresis performance, easy to replace and low in manufacturing cost and maintenance cost.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. The metal damper for improving the earthquake resistance of the building structure is characterized by comprising two energy consumption devices which are used for being fixed on arc structures on a fixed beam, wherein the head end and the tail end of each energy consumption device are hinged with each other, and the arc surfaces of the arc structures of the two energy consumption devices face outwards relatively.

2. The metal damper for improving seismic performance of a building structure of claim 1, wherein: the energy dissipation device comprises an arc-shaped buffer plate and two connecting plates connected to two ends of the buffer plate, the first connecting plate of the first energy dissipation device and the first connecting plate of the second energy dissipation device are both U-shaped clamping pieces, the bottoms of the U-shaped clamping pieces are fixedly connected with the buffer plate, pin holes are formed in the upper portions of the opening ends of the U-shaped clamping pieces, screw rods penetrate through the pin holes in the end portions of the first connecting plates of the first energy dissipation devices, the middle portions of the second connecting plates of the second energy dissipation devices are fixed through nuts, screw rods penetrate through the pin holes in the end portions of the first connecting plates of the second energy dissipation devices, the middle portions of the second connecting plates of the first energy dissipation devices are fixed through nuts, and the end portions of the second connecting plates of the first energy dissipation devices and the second energy dissipation devices are fixedly connected with a fixed beam.

3. The metal damper for improving seismic performance of a building structure of claim 2, wherein: the included angle between two connecting plates is the right angle, and the included angle that forms between the both ends of buffer board and the arc centre of a circle is less than or equal to 90.

4. The metal damper for improving seismic performance of a building structure of claim 2, wherein: and the end parts of the second connecting plates of the first energy consumption device and the second energy consumption device are respectively provided with a fixing plate for connecting the fixing beam, and the fixing plates are fixed on the fixing beam through screws.