CN204456490U - The combined sinker of metal stage by stage - Google Patents

Abstract

The utility model discloses a combined metal energy dissipating device in stages. The core energy dissipating component includes a shearing type energy dissipating component and a bending type energy dissipating component; Two rectangular low-yield point steel sheets are arranged parallel to each other; the curved energy-dissipating components include several rectangular curved energy-dissipating steel sheets fixedly connected to the upper top plate and the lower bottom plate, and several rectangular curved energy-dissipating steel sheets are The energy-dissipating steel sheets are parallel to each other and arranged at intervals between the two rectangular low-yield point steel sheets, and are perpendicular to the two rectangular low-yield steel sheets. The combined staged metal energy dissipator of the utility model is based on the idea that the bending yield displacement is greater than the shear yield displacement, and the combination of ordinary steel and low yield point steel is used in materials, and the number of bending plates and shearing plates is reasonably set , to ensure that the device yields in two stages under small earthquakes and major earthquakes, avoiding structural damage and playing a protective role.

Description

Combined staged metal energy dissipator

technical field

The utility model relates to an engineering structure damping device, in particular to a combined staged metal energy dissipator, which belongs to the engineering structure energy dissipation damping and vibration control technology.

Background technique

The energy dissipation and shock absorption technology of engineering structures is to install energy dissipation devices in certain parts of the engineering structures, through which the energy dissipation devices produce hysteretic deformation to dissipate or absorb the energy input into the structure by earthquakes, so as to reduce the seismic response of the main structure, thereby avoiding The structure is damaged or collapsed to achieve the purpose of shock absorption control. The metal energy dissipator has the advantages of clear energy dissipation principle, simple structure, and stable energy dissipation performance, and its long-term use performance and maintenance costs are superior to other types of energy dissipation devices (such as viscous dampers, friction dampers, etc.) . Therefore, it is widely used in new construction and seismic reinforcement engineering.

Although the existing metal energy dissipation devices have a variety of structural shapes, most of them have a single form of energy dissipation and can only function under large earthquakes. Under small earthquakes, the energy dissipation devices are in an elastic state and cannot participate in the dissipation of structural seismic energy. Therefore, frequent small earthquakes will also cause certain damage to the structure and cause economic losses, and the large additional stiffness of the energy dissipation device will also lead to the amplification of the earthquake effect.

Contents of the invention

Purpose of the invention: Aiming at the above-mentioned prior art, provide a combined staged metal energy dissipator, a new type of combined energy dissipating device that realizes two-stage energy consumption under a large earthquake and a small earthquake.

Technical solution: combined staged metal energy dissipation device, including upper top plate, lower bottom plate and core energy dissipation components; the core energy dissipation components include shear type energy dissipation components and bending type energy dissipation components; the shear type energy dissipation components The energy-dissipating component includes two rectangular low-yield point steel sheets fixedly connected with the upper top plate and the lower bottom plate, and the two rectangular low-yield point steel sheets are arranged parallel to each other; Several rectangular curved energy-dissipating steel sheets fixedly connected to the lower base plate, the several rectangular curved energy-dissipating steel sheets are arranged parallel to each other and spaced between the two rectangular low-yield point steel sheets, and at the same time perpendicular to the two Rectangular low yield point steel sheet.

Further, the middle parts of the several rectangular curved energy-dissipating steel sheets are all opened with drum-shaped openings.

Further, the rectangular low-yield-point steel sheet, the rectangular curved energy-dissipating steel sheet are connected to the upper top plate and the lower bottom plate through full-penetration butt welding.

Further, the thickness of the rectangular low-yield point steel sheet is 8-12mm, and height:width=1.5-2.0:1.

Further, the thickness of the rectangular curved energy-dissipating steel sheet is 16-25 mm.

Beneficial effects: a combined staged metal energy dissipator of the utility model is a two-stage energy dissipating device, two sets of energy dissipating components are arranged between the upper top plate and the lower bottom plate, and one group is made of rectangular steel sheet with low yield point The shear-type energy-dissipating components composed of steel sheets, and the other group is bending-type energy-dissipating components composed of bending energy-dissipating steel sheets. When working, the upper top plate of the energy absorber is connected to the building structure through high-strength bolts, and the lower bottom plate is connected to the herringbone support or middle pillar through friction-type high-strength bolts, so that there is reliable displacement transmission between the structure and the structure. When an earthquake occurs, the structure produces interstory displacement, and the upper roof and lower floor will produce a relative displacement, and the combined metal energy dissipator will start to work. According to the fortification target of the structure, it has a small yield under the action of a small earthquake. The low-yield-point steel sheet with displacement reaches the yield strength first, and the yield energy is dissipated; while the bending energy-dissipating steel sheet with larger yield displacement is in the elastic state, which is the first stage of energy consumption, that is, all the seismic energy during a small earthquake Dissipated by the low-yield-point steel sheet that yielded first, while the bending energy-dissipating steel sheet is still in an elastic state; under the action of a large earthquake, the bending energy-dissipating steel sheet with a large yield displacement in the energy dissipation device also reaches its yield strength. At this time, the two types of energy-dissipating steel sheets jointly dissipate the seismic energy, which is the second stage of energy consumption, that is, the seismic energy of a large earthquake is consumed by the shear-type energy-dissipating components and the bending-type energy-dissipating components as a whole. At this time, all energy-dissipating steel sheets yield and enter the working state. Ultimately achieve the purpose of attenuating the seismic response of the structure and protecting the safety of the main structure. Based on the idea of combining out-of-plane bending energy dissipation and in-plane shear energy dissipation, the yield energy dissipation of a rectangular shear plate under small earthquakes and the two stages of yield energy dissipation of a drum-shaped open bending plate under large earthquakes are simultaneously realized on one device The energy consumption target ensures that the structure will not be damaged no matter whether it is under a large earthquake or a small earthquake. The utility model can be used not only in the anti-seismic design of new buildings, but also in the anti-seismic reinforcement of existing buildings; it also has the advantages of simple structure, stable performance, low price, convenient installation and use, and easy replacement. Among them, the number of rectangular bending energy-dissipating steel sheets can be flexibly set according to project needs, not less than two pieces; the specific size parameters of shear-type energy-dissipating components and bending-type energy-dissipating components need to be determined according to engineering needs and shock absorption requirements.

Further, drum-shaped openings are formed in the middle of the rectangular curved energy-dissipating steel sheets. If no hole is opened, when the rectangular bending energy-dissipating steel sheet undergoes out-of-plane bending deformation, the energy-dissipating parts are concentrated at the upper and lower ends of the steel sheet, and the middle part of the steel sheet is always in an elastic working state, which does not make full use of the material strength of the entire steel plate; and according to The complete stress cloud diagram of the steel sheet without openings. After opening the corresponding openings, the stress distribution on the steel plate is more uniform, and the stress distribution is significantly optimized.

Description of drawings

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

Fig. 2 is the top view structural representation of the utility model;

Fig. 3 is the overall three-dimensional schematic view of the utility model;

Fig. 4 is the internal three-dimensional schematic diagram of the utility model;

Among them: 1—upper top plate; 2—lower bottom plate; 3—rectangular low yield point steel sheet; 4—rectangular curved energy-dissipating steel sheet.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further explained.

As shown in Figure 1-4: a two-stage working energy dissipator, including upper top plate 1, lower bottom plate 2 and core energy dissipation components. The core energy-dissipating components include shear-type energy-dissipating components and bending-type energy-dissipating components. The shear-type energy dissipation component includes two rectangular low-yield point steel sheets 3 fixedly connected with the upper top plate 1 and the lower bottom plate 2, and the two rectangular low-yield point steel sheets 3 are arranged parallel to each other. The curved energy-dissipating component includes 6 rectangular curved energy-dissipating steel sheets 4 fixedly connected to the upper top plate 1 and the lower bottom plate 2, and the 6 rectangular curved energy-dissipating steel sheets 4 are arranged parallel to each other and spaced between two rectangular low-yield point steel sheets 3, two rectangular low-yield-point steel sheets 3 are perpendicular at the same time. Steel sheet 3 is processed from low-yield steel below 225MPa.

Among them, the upper top plate 1 and the lower bottom plate 2 are made of ordinary steel; the preferred steel type of the two rectangular low yield point steel sheets 3 is LY160. The thickness of sheet 3 is controlled at 8-12mm, and the aspect ratio is controlled at 1.5-2.0:1; the rectangular curved energy-dissipating steel sheet 4 is made of ordinary carbon structural steel, here Q235 is used, and the thickness of the sheet is controlled at 16-25mm. There are drum-shaped openings in the middle of the bending energy-dissipating steel sheets 4, and the size of the openings is determined according to the actual needs of the project. The rectangular low-yield point steel sheet 3, the rectangular curved energy-dissipating steel sheet 4, the upper top plate 1, and the lower bottom plate 2 are connected by full-transparent butt welding.

There are two rows of high-strength bolt holes on the upper top plate 1 and the lower bottom plate 2 respectively. When in use, the upper top plate 1 is connected to the beam through high-strength bolts, and the lower bottom plate 2 is connected to the herringbone support or the middle pillar through friction-type high-strength bolts. The bolt connection is convenient for the maintenance and replacement of the energy dissipator.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (5)

1. Combined staged metal energy dissipation device, characterized in that: it includes an upper top plate (1), a lower bottom plate (2) and a core energy dissipation component; the core energy dissipation component includes a shear type energy dissipation component and a bending type energy dissipation component energy component; the shear type energy dissipation component includes two rectangular low-yield point steel sheets (3) fixedly connected to the upper top plate (1) and the lower bottom plate (2), and the two rectangular low-yield point steel sheets (3) The sheets (3) are arranged parallel to each other; the curved energy-dissipating assembly includes several rectangular curved energy-dissipating steel sheets (4) fixedly connected to the upper top plate (1) and the lower bottom plate (2), and the several rectangular energy-dissipating steel sheets (4) The bending energy-dissipating steel sheets (4) are arranged parallel to each other and at intervals between the two rectangular low-yield point steel sheets (3), and are perpendicular to the two rectangular low-yield point steel sheets (3). 2. The combined staged metal energy dissipator according to claim 1, characterized in that: there are drum-shaped openings in the middle of the several rectangular curved energy dissipation steel sheets (4). 3. The combined staged metal energy dissipator according to claim 1, characterized in that: the rectangular low-yield point steel sheet (3), the rectangular curved energy-dissipating steel sheet (4) and the upper top plate (1), The lower bottom plates (2) are connected through full-penetration butt welding. 4. The combined staged metal energy dissipator according to claim 1, characterized in that: the thickness of the rectangular low-yield steel sheet (3) is 8-12mm, and height:width=1.5-2.0:1. 5. The combined staged metal energy dissipator according to claim 1, characterized in that: the thickness of the rectangular curved energy dissipating steel sheet (4) is 16-25 mm.