CN218881213U - Shearing type mild steel damper - Google Patents

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

A shear type mild steel damper

technical field

The utility model relates to a shear type mild steel damper, in particular to a hyperbolic web shear type mild steel damper, which belongs to the technical field of building energy dissipation and shock absorption.

Background technique

The strong ground vibrations caused by earthquakes cause the collapse and damage of various buildings, which is one of the most important direct causes of casualties and property losses. The anti-seismic of traditional buildings mainly meets the requirements of anti-seismic fortification by increasing the cross-section and strength of structural components and increasing the lateral stiffness of the building structure. The energy-dissipating and shock-absorbing technology is to assemble energy-dissipating devices in certain parts of the building structure, and consume vibration energy through the energy-dissipating devices to reduce the vibration of the building structure and ensure the safety of the structure. Energy dissipation and shock absorption technology has a clear shock absorption mechanism, simple construction technology, and gradually matures, and has been widely used in building earthquake resistance.

Mild steel dampers are usually made of mild steel with low yield strength and strong plastic deformation ability. The working principle of the mild steel damper is to use the hysteretic energy consumption in the plastic deformation process of mild steel to provide equivalent damping force, so as to achieve the effect of energy dissipation and shock absorption. The traditional shear-type mild steel damper only connects the upper and lower connecting plates with the energy-dissipating web, and requires the use of stiffeners, resulting in excessive welding of the energy-dissipating plate, which is prone to stress concentration and out-of-plane buckling damage.

Contents of the invention

The utility model provides a shearing type mild steel damper, and a hyperbolic web shearing type mild steel damper is constructed by combining a hyperbolic energy-dissipating web with a buckling restraint part.

The technical scheme of the utility model is: a shear type mild steel damper, including an upper connecting plate 1, a hyperbolic energy-dissipating web 2, a buckling constraint part, and a lower connecting plate 6; wherein, the hyperbolic energy-dissipating web The web 2 is arranged between the two buckling constrained parts, the upper end of the double-curved energy-dissipating web 2 is fixedly connected with the upper connecting plate 1 , and the lower end of the double-curved energy-dissipating web 2 is fixedly connected with the lower connecting plate 6 .

The buckling constrained part includes a vertical steel plate 3, a first flange plate 4, and a second flange plate 5; wherein, the middle of the two vertical steel plates 3 is installed in the middle and the hyperbolic energy dissipation web 2 is connected by bolts. Two flange plates 5; the upper and lower installation of the second flange plate 5 is the first flange plate 4 arranged parallel to the second flange plate 5, the upper end of the vertical steel plate 3 is welded with the upper connecting plate 1, and the lower end of the vertical steel plate 3 Welded with the lower connecting plate 6, the vertical steel plate 3 is in close contact with the hyperbolic energy-dissipating web 2.

The upper and lower ends of the contact surfaces of the vertical steel plate 3 and the hyperbolic energy-dissipating web 2 are chamfered.

The first flange plate 4 and the second flange plate 5 are U-shaped, and the short sides of the left and right ends of the first flange plate 4 and the second flange plate 5 are welded to the vertical steel plate 3 .

The beneficial effects of the utility model are: the utility model combines the hyperbolic energy-dissipating web with the buckling restraint part, and the buckling restraint part plays a restraining role on the hyperbolic energy-dissipating web under the action of the earthquake, so that the hyperbolic energy-dissipating web The web fully utilizes the energy dissipation capacity of its shear deformation, so that the performance of the damper is improved; moreover, the damper reduces the welding of the energy dissipation plate and thus reduces the stress concentration.

Description of drawings

Fig. 1 is the structural diagram schematic diagram of the present utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is a side view of the utility model;

Fig. 4 is the combination schematic diagram of low yield point mild steel and upper and lower connecting plates of the present invention;

Fig. 5 is a schematic diagram of the buckling restraint part of the utility model;

In the figure: 1. Upper connecting plate, 2. Hyperbolic energy-dissipating web, 3. Vertical steel plate, 4. First flange plate, 5. Second flange plate, 6. Lower connecting plate, 7. Bolts hole.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described further, but the content of the utility model is not limited to said range.

Example 1: As shown in Figures 1-5, a shear type mild steel damper includes an upper connecting plate 1, a hyperbolic energy-dissipating web 2, a buckling restraint part, and a lower connecting plate 6; The curved energy-dissipating web 2 is arranged between the two buckling constrained parts, the upper end of the double-line curved energy-dissipating web 2 is fixedly connected to the upper connecting plate 1, and the lower end of the double-linear curved energy-dissipating web 2 is connected to the lower connecting plate 6 Fixed connection.

Further, the buckling constraint part includes a vertical steel plate 3, a first flange plate 4, and a second flange plate 5; wherein, the middle installation of the two vertical steel plates 3 and the hyperbolic energy-dissipating web 2 are connected by bolts The second flange plate 5 connected; the upper and lower installation of the second flange plate 5 is the first flange plate 4 arranged parallel to the second flange plate 5, and the upper end of the vertical steel plate 3 is welded with the upper connecting plate 1, vertically The lower end of the steel plate 3 is welded to the lower connecting plate 6, and the vertical steel plate 3 is in tight contact with the hyperbolic energy-dissipating web 2.

Further, the upper and lower ends of the vertical steel plate 3 in contact with the hyperbolic energy-dissipating web 2 are chamfered, that is, chamfering is performed at right angles; joint welding is avoided to reduce stress concentration.

Further, the first flange plate 4 and the second flange plate 5 are U-shaped, and the short sides of the left and right ends of the first flange plate 4 and the second flange plate 5 are welded to the vertical steel plate 3 .

In the embodiment of the present utility model, two buckling constrained parts are provided, and the buckling constrained parts have the same structure, and each buckling constrained part includes two vertical steel plates 3, two first flange plates 4, and one second flange Plate 5; the upper ends of two vertical steel plates 3 arranged in parallel are welded to the upper connecting plate 1, and the lower ends of the vertical steel plates 3 are welded to the lower connecting plate 6; a second flange plate 5 is installed in the middle of the two vertical steel plates 3, A first flange plate 4 is arranged above and below the second flange plate 5; two vertical steel plates 3 and two first flange plates 4 are in close contact with the hyperbolic energy-dissipating web 2 without welding , reduce the welding process, avoid the residual stress and residual deformation caused by welding, can better guarantee its good deformation performance, and give full play to the energy dissipation performance; the second flange plate 5 is provided with circular bolt holes 7, two The second flange plate 5 in the middle of the buckling constrained part is bolted to the hyperbolic energy-dissipating web 2; the first flange plate 4 and the second flange plate 5 are U-shaped, and the two parallel horizontal short sides The steel plate 3 is welded; the upper end of the double-line curved energy-dissipating web 2 is welded to the upper connecting plate 1, and the lower end of the double-line curved energy-dissipating web 2 is welded to the lower connecting plate 6; the upper connecting plate and the lower connecting plate are connected to each other through bolts Component connections of building structures. It should be noted that the number of the first flange plate 4 can be adjusted according to the needs, the first flange plate 4 can choose the above-mentioned method of contacting the hyperbolic energy dissipation web 2, or the second flange plate can be selected 5 is connected to the hyperbolic energy-dissipating web 2, that is, bolt connection.

The application of the above-mentioned technical scheme has improved the traditional mild steel damper’s problem of weakening of the energy-dissipating web due to improper welding process, and reduced the problems of residual deformation, welding internal stress, and stress concentration caused by the welded structure. Effectively prevent out-of-plane buckling damage of hyperbolic energy-dissipating webs, and prevent premature failure of mild steel dampers.

The working mechanism of the utility model is as follows:

Under earthquake action, the hyperbolic energy-dissipating web 2 made of steel with a low yield point, the upper connecting plate 1 and the lower connecting plate 6 stagger each other, thereby driving the hyperbolic energy-dissipating web 2 to move laterally The moving, hyperbolic energy-dissipating web 2 mainly bears the shear force, and produces shear deformation to dissipate the energy input by the earthquake into the structure. At the same time, in order to prevent out-of-plane buckling damage caused by excessive shear deformation of the hyperbolic energy-dissipating web 2, and to reduce residual deformation, welding internal stress, stress concentration and other factors caused by the welding structure, the utility model uses vertical A new type of buckling restraint part is formed to the steel plate 3, the first flange plate 4, and the second flange plate 5 to constrain the hyperbolic energy-dissipating web 2, and the first flange plate 4 and the second flange plate 5 will The energy dissipation web 2 is divided into blocks, so that the constrained hyperbolic energy dissipation web 2 has a multi-order mode shape, which effectively improves the restraint effect on the hyperbolic energy dissipation web 2 to a large extent, and makes the hyperbolic energy dissipation web 2 The plate 2 fully exerts its energy dissipation capacity of shear deformation, so that the performance of the damper is improved.

The specific implementation of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned implementation. Various changes are made.

Claims (4)

1. A shear type mild steel damper is characterized in that: it comprises an upper connecting plate (1), a hyperbolic energy-dissipating web (2), a buckling restraint part, and a lower connecting plate (6); The curved energy-dissipating web (2) is arranged between the two buckling restraint parts, the upper end of the double-line curved energy-dissipating web (2) is fixedly connected with the upper connecting plate (1), and the double-line curved energy-dissipating web ( 2) The lower end is fixedly connected with the lower connecting plate (6). 2. The shear type mild steel damper according to claim 1, characterized in that: the buckling restraint part comprises a vertical steel plate (3), a first flange plate (4), a second flange plate (5 ); wherein, the middle of the two vertical steel plates (3) is installed with the second flange plate (5) connected by bolts to the hyperbolic energy dissipation web (2); the upper and lower installation of the second flange plate (5) The first flange plate (4) arranged parallel to the second flange plate (5), the upper end of the vertical steel plate (3) is welded to the upper connecting plate (1), and the lower end of the vertical steel plate (3) is welded to the lower connecting plate ( 6) Welding, the vertical steel plate (3) is in tight contact with the hyperbolic energy-dissipating web (2). 3. The shear type mild steel damper according to claim 2, characterized in that: the upper and lower ends of the contact surfaces of the vertical steel plate (3) and the hyperbolic energy dissipation web (2) are provided with Chamfer. 4. The shear type mild steel damper according to claim 2, characterized in that: the first flange plate (4), the second flange plate (5) are U-shaped, and the first flange plate ( 4), the short sides of the left and right ends of the second flange plate (5) are welded to the vertical steel plate (3).

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