CN218881213U

CN218881213U - Shearing type mild steel damper

Info

Publication number: CN218881213U
Application number: CN202222953444.XU
Authority: CN
Inventors: 刘铖聪; 白羽; 苏何先; 刘颖茵
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-04-18
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses a shearing type mild steel damper, which comprises an upper connecting plate, a hyperbolic type energy dissipation web plate, a buckling constraint part and a lower connecting plate; the double-line curved energy dissipation web plate is arranged between the two buckling constraint parts, the upper end of the double-line curved energy dissipation web plate is fixedly connected with the upper connecting plate, and the lower end of the double-line curved energy dissipation web plate is fixedly connected with the lower connecting plate. The utility model combines the hyperbolic energy dissipation web plate with the buckling constraint part, and the buckling constraint part plays a role in constraining the hyperbolic energy dissipation web plate under the action of an earthquake, so that the hyperbolic energy dissipation web plate can fully exert the energy dissipation capacity of shearing deformation, and the performance of the damper is improved; and the welding of the energy dissipation plate is reduced by the damper, so that the stress concentration is reduced.

Description

Shearing type mild steel damper

Technical Field

The utility model relates to a shear type mild steel attenuator, in particular to relate to a hyperbola web shear type mild steel attenuator belongs to building energy dissipation shock attenuation technical field.

Background

The strong ground vibration caused by earthquake makes various buildings collapse and damage, which is one of the most important direct causes of casualties and property loss. The earthquake resistance of the traditional building is mainly realized by increasing the section and the strength of structural members and increasing the lateral stiffness of a house structure so as to meet the requirement of earthquake fortification. In the energy dissipation and shock absorption technology, energy dissipation devices are assembled at certain parts of a building structure, and the energy dissipation devices consume vibration energy, so that the vibration of the building structure is reduced, and the safety of the structure is guaranteed. The energy dissipation and shock absorption technology has the advantages of clear shock absorption mechanism, simple construction process and gradual maturity, and is widely applied to building shock resistance.

The soft steel damper is generally made of soft steel with low yield strength and strong plastic deformation capability. The action principle of the mild steel damper is to provide equivalent damping force by using hysteretic energy consumption in the plastic deformation process of mild steel, thereby achieving the effect of energy dissipation and shock absorption. Traditional shearing type mild steel attenuator is only power consumption web connection upper and lower connecting plate, need use the stiffening rib to lead to power consumption board welding too much, takes place stress concentration and plane off-plate buckling destruction etc. easily.

Disclosure of Invention

The utility model provides a shearing type mild steel attenuator combines with bucking restraint part through hyperbola type power consumption web, has found hyperbola web shearing type mild steel attenuator.

The technical scheme of the utility model is that: a shear type mild steel damper comprises an upper connecting plate 1, a hyperbolic energy dissipation web plate 2, a buckling constraint part and a lower connecting plate 6; wherein, the curved type power consumption web 2 of double-line sets up between two bucking restraint parts, and the curved type power consumption web 2 upper end of double-line is connected with upper junction plate 1 fixed connection, and the curved type power consumption web 2 lower extreme of double-line is connected with lower junction plate 6 fixed connection.

The buckling restrained portion comprises a vertical steel plate 3, a first flange plate 4 and a second flange plate 5; wherein, a second flange plate 5 connected with the hyperbolic energy dissipation web plate 2 through a bolt is arranged between the two vertical steel plates 3; the upper and lower installation of second flange plate 5 is parallel arrangement's first flange plate 4 with

second flange plate

5, and 3 upper ends of vertical steel sheet are welded with

upper junction plate

1, and 3 lower extremes of vertical steel sheet are welded with lower junction plate 6, and vertical steel sheet 3 pushes up tight contact with 2 tops of hyperbola type power consumption web.

And chamfers are arranged at the upper end part and the lower end part of the contact surface of the vertical steel plate 3 and the hyperbolic energy consumption web plate 2.

First flange plate 4, second flange plate 5 are the U type, and the minor face at both ends and the welding of vertical steel sheet 3 about first flange plate 4, second flange plate 5.

The utility model has the advantages that: the utility model combines the hyperbolic energy-consuming web plate with the buckling restrained part, and the buckling restrained part plays a restraining role on the hyperbolic energy-consuming web plate under the action of an earthquake, so that the hyperbolic energy-consuming web plate can fully exert the energy-consuming capacity of shearing deformation of the hyperbolic energy-consuming web plate, and the performance of the damper is improved; and the welding of the energy dissipation plate is reduced by the damper, so that the stress concentration is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

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

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

FIG. 4 is a schematic view of the combination of the mild steel with low yield point, the upper connecting plate and the lower connecting plate;

fig. 5 is a schematic view of a buckling restrained portion of the present invention;

in the figure: 1. upper junction plate, 2, hyperbolic type power consumption web, 3, vertical steel sheet, 4, first flange board, 5, second flange board, 6, lower connecting plate, 7, bolt hole.

Detailed Description

The invention will be further described with reference to the following drawings and examples, but the scope of the invention is not limited thereto.

Example 1: as shown in fig. 1-5, a shear type mild steel damper comprises an upper connecting plate 1, a hyperbolic energy dissipation web 2, a buckling restrained portion and a lower connecting plate 6; wherein, the curved type power consumption web 2 of double-line sets up between two bucking restraint parts, and the curved type power consumption web 2 upper end of double-line is connected with upper junction plate 1 fixed connection, and the curved type power consumption web 2 lower extreme of double-line is connected with lower junction plate 6 fixed connection.

Further, the buckling-restrained portion includes a vertical steel plate 3, a first flange plate 4, a second flange plate 5; wherein, a second flange plate 5 connected with the hyperbolic energy dissipation web plate 2 through a bolt is arranged between the two vertical steel plates 3; the upper and lower installation of second flange plate 5 is parallel arrangement's first flange plate 4 with

second flange plate

5, and 3 upper ends of vertical steel sheet are welded with

upper junction plate

Furthermore, chamfers are arranged at the upper end part and the lower end part of the contact end of the vertical steel plate 3 and the hyperbolic energy consumption web plate 2, namely, chamfer processing is carried out at a right angle; avoid the node welding, reduce stress concentration.

Further, first flange plate 4, second flange plate 5 are the U type, and the minor face and the 3 welding of vertical steel sheet of both ends about first flange plate 4, second flange plate 5.

In the embodiment of the utility model, two buckling restrained parts are provided, the buckling restrained parts have the same structure, and each buckling restrained part comprises two vertical steel plates 3, two first flange plates 4 and a second flange plate 5; the upper ends of two vertical steel plates 3 which are arranged in parallel are welded with the upper connecting plate 1, and the lower ends of the vertical steel plates 3 are welded with the lower connecting plate 6; a second flange plate 5 is arranged between the two vertical steel plates 3, and a first flange plate 4 is respectively arranged above and below the second flange plate 5; the two vertical steel plates 3 and the two first flange plates 4 are in tight contact with the hyperbolic energy consumption web plate 2 in a propping manner without welding, so that welding procedures are reduced, residual stress and residual deformation caused by welding are avoided, good deformation performance of the hyperbolic energy consumption web plate can be better guaranteed, and the energy consumption performance is fully exerted; the second flange plate 5 is provided with a circular bolt hole 7, and the second flange plate 5 in the middle of the two buckling restrained parts is in bolt connection with the hyperbolic energy dissipation web 2; the first flange plate 4 and the second flange plate 5 are U-shaped, and two parallel horizontal short edges are welded with the vertical steel plate 3; the upper end of the double-line curved energy dissipation web plate 2 is welded with the upper connecting plate 1, and the lower end of the double-line curved energy dissipation web plate 2 is welded with the lower connecting plate 6; the upper connecting plate and the lower connecting plate are connected with a member of a building structure through bolts. It should be noted that the number of the first flange plates 4 can be adjusted as required, and the first flange plates 4 can be selected to be in abutting contact with the hyperbolic energy dissipation web 2, or the connection manner of the second flange plates 5 and the hyperbolic energy dissipation web 2, that is, the bolt connection.

By applying the technical scheme, the problem that the strength of the energy dissipation web plate is weakened due to improper welding process of the traditional mild steel damper is solved, the problems of residual deformation, welding internal stress, stress concentration and the like caused by a welding structure are reduced, the out-of-plane buckling damage of the hyperbolic energy dissipation web plate is effectively prevented, and the premature failure of the mild steel damper is prevented.

The utility model discloses the theory of operation as follows:

under the action of an earthquake, the hyperbolic energy consumption web 2 is made of low-yield-point steel, the upper connecting plate 1 and the lower connecting plate 6 are mutually staggered, so that the hyperbolic energy consumption web 2 is driven to move laterally, and the hyperbolic energy consumption web 2 mainly bears the shearing force action and generates shearing deformation to dissipate the energy of an earthquake input structure. Simultaneously, for preventing that hyperbola type power consumption web 2 from warping and destroying outside the plane at too big shear deformation and leading to factors such as residual deformation, welding internal stress, stress concentration that welded structure arouses, the utility model discloses with vertical steel sheet 3, first flange plate 4, second flange plate 5 form novel bucking restraint part in order to restrain hyperbola type power consumption web 2, first flange plate 4, second flange plate 5 are with 2 piecemeals of hyperbola type power consumption web, make restraint hyperbola type power consumption web 2 have multistage mode of shaking, very big degree has effectively improved the restraint effect to hyperbola type power consumption web 2, makes hyperbola type power consumption web 2 full play its shear deformation's power consumption ability for the performance of attenuator obtains promoting.

The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention.

Claims

1. A shear type mild steel damper is characterized in that: comprises an upper connecting plate (1), a hyperbolic energy consumption web plate (2), a buckling constraint part and a lower connecting plate (6); the double-line curved energy dissipation web plate (2) is arranged between the two buckling constraint parts, the upper end of the double-line curved energy dissipation web plate (2) is fixedly connected with the upper connecting plate (1), and the lower end of the double-line curved energy dissipation web plate (2) is fixedly connected with the lower connecting plate (6).

2. A shear type mild steel damper according to claim 1, wherein: the buckling restrained part comprises a vertical steel plate (3), a first flange plate (4) and a second flange plate (5); wherein a second flange plate (5) connected with the hyperbolic energy consumption web plate (2) through a bolt is arranged between the two vertical steel plates (3); the upper and lower installation of second flange board (5) is parallel arrangement's first flange board (4) with second flange board (5), vertical steel sheet (3) upper end and upper junction plate (1) welding, vertical steel sheet (3) lower extreme and lower connecting plate (6) welding, and vertical steel sheet (3) and hyperbola type power consumption web (2) top are tight contact.

3. A shear type mild steel damper according to claim 2, wherein: and chamfers are arranged at the upper end part and the lower end part of the contact surface of the vertical steel plate (3) and the hyperbolic energy consumption web plate (2).

4. A shear type mild steel damper according to claim 2, wherein: first flange board (4), second flange board (5) are the U type, and the minor face and vertical steel sheet (3) welding at both ends are controlled to first flange board (4), second flange board (5).