CN208184005U - A kind of vertical restricted type metal yield energy-consumption damper of release - Google Patents

Abstract

The utility model relates to a release vertical restraint metal yield energy consumption damper, which belongs to the technical field of shock absorption in civil and structural engineering. It includes two flange steel plates, energy-dissipating webs, and bolts. Two energy-dissipating steel plates with waist-shaped holes are connected by bolts to form an energy-dissipating web. A certain displacement can occur in the vertical direction, releasing energy consumption. Vertical constraint of the damper. The energy-dissipating web is generally made of mild steel with a low yield point, which is welded vertically between the flange steel plates, and the two energy-dissipating steel plates are connected by bolts to form the energy-dissipating web. Compared with the existing metal damper with low yield point, the utility model releases the vertical restraint of the energy-dissipating web, and eliminates the damper caused by the difference between the vertical displacement of the overall structure and the vertical displacement of the damper during an earthquake The vertical tensile pressure inside the web reduces the damage of the main structural members and dampers, and can more effectively perform structural shock absorption and energy consumption, and has broad market promotion and application prospects.

Description

A Metal Yield Energy Dissipating Damper for Releasing Vertical Constraints

technical field

The utility model belongs to the technical field of shock absorption in civil and structural engineering, in particular to a metal yield energy dissipation damper that releases vertical constraints.

Background technique

A wide variety of dampers have been developed, the main types are displacement-type metal yield energy-dissipating dampers and friction dampers, velocity-type viscous dampers, and velocity-displacement hybrid viscoelastic dampers. Among these kinds of dampers, metal yield energy dissipation dampers are widely used because of their stable performance, low price and high reliability.

Most of the metal dampers currently used are shear-loaded dampers. The upper and lower end steel plates are connected to the bottom of the frame beam and the top of the lower herringbone support through anchor bolts or welding. Chinese patent CN201485988U discloses a shear-type metal bending energy-dissipating The damper is anchored into the frame structure by two upper and lower connecting steel plates through bolts, and under the action of shear force, the metal web shears and dissipates energy. However, the vertical displacement caused by the interlayer lateral movement of the frame structure is generally different from the vertical deformation of the damper, which may easily lead to damage to the connecting components of the main structure or exert additional force on the damper.

To reduce the damage to the main structural members and dampers that may be caused by vertical constraints during earthquakes, it is of great engineering application value to develop a metal yield energy dissipation damper that releases vertical constraints.

Utility model content

The purpose of this utility model is to overcome the damage of the main structural components and the damage of the damper caused by the difference between the vertical displacement caused by the lateral movement between the layers of the frame structure and the vertical deformation of the damper. The metal energy-dissipating damper of the shock-absorbing structure has a simple structure and is easy to install, and does not cause damage to the connected main structural members and the damper during an earthquake.

The purpose of this utility model can be achieved through the following technical solutions:

A metal yield energy dissipation damper that releases vertical constraints, comprising:

Two flange plates,

Several energy-dissipating steel webs connected between two flange steel plates, the energy-dissipating steel webs include two energy-dissipating plates, and waist-shaped holes are opened at the contact ends of the two energy-dissipating plates. The waist-shaped holes are closely matched by bolts, and the bolt connection of the waist-shaped holes is set to release the vertical restraint of the energy-dissipating web, and a certain displacement can occur in the vertical direction, so as to overcome the vertical displacement caused by the lateral movement of the frame structure under the action of the earthquake. The vertical displacement and the vertical deformation of the damper are not the same, resulting in damage to the main structural members and damage to the damper.

The energy-dissipating steel webs are arranged parallel to each other.

The energy dissipation board can have a certain displacement in the vertical direction.

The energy-dissipating steel plate has a triangular structure, and the side length gradually decreases from the end of the steel plate with the flange to the end of the waist-shaped hole.

Each energy dissipation plate is provided with two waist-shaped holes.

Two bolts pass through the waist-shaped hole to form the energy-dissipating web from the two energy-dissipating steel plates.

The energy-dissipating steel plate is vertically welded between two flange steel plates.

The energy-dissipating steel web is a steel plate made of mild steel or carbon steel with a low yield point.

The energy-dissipating steel webs mentioned above are generally more than 3 in engineering, and there are more than 20 at most.

The thickness of the flange steel plate should be more than 20mm.

Compared with the prior art, the utility model has the use function similar to that of a metal damper, and overcomes the shortcoming of the vertical restraint of a metal damper with a similar structure, and does not cause damage to the structural components and the damper during an earthquake. Specifically, it has the following characteristics:

1. The energy-dissipating web is composed of two energy-dissipating steel plates with waist-shaped holes connected by bolts. The bolt-connected waist-shaped holes release the vertical constraints of the energy-dissipating web and reduce the vertical load caused by the overall structure during earthquakes. Damage to the damper or damage to building components caused by the inconsistency between the displacement and the vertical displacement of the damper.

2. The structure is simple, economical and practical, easy to install and operate, and the damage to the connected main structural components is reduced during an earthquake, and the cost is low.

3. Strong designability. The utility model can realize arbitrarily changing yield force and yield displacement in a large range by changing the quantity, width and thickness of energy-consuming steel plates, and can meet the needs of various structures.

Description of drawings

Fig. 1 is the main view structure schematic diagram of the utility model;

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

Fig. 3 is a structural schematic diagram of the application of the utility model in a house frame structure.

In the figure, 1-flange steel plate, 2-energy-dissipating steel plate, 3-web connecting bolt, 4-waist hole, 5-herringbone brace, 6-column, 7-beam, 8-damper connecting bolt, 9 - Connecting steel plates.

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present utility model. These all belong to the protection domain of the present utility model.

Example

A release vertical restraint metal yield energy dissipation damper, its structure is shown in Figure 1-2, the damper includes two flange steel plates 1, three energy dissipation webs arranged between the flange steel plates 1 , each of the three energy-dissipating webs is composed of two energy-dissipating steel plates 2 with waist-shaped holes 4 connected by web connecting bolts 3, and the energy-dissipating webs and the flange steel plates 1 are vertically welded into a whole to form a damper. The waist-shaped hole bolt connection is set to release the vertical constraint of the energy-dissipating web, and a certain displacement can occur in the vertical direction, so as to overcome the vertical displacement and the vertical displacement of the damper caused by the lateral movement of the frame structure under the earthquake. The amount of deformation is not the same, resulting in damage to the main structural members and damage to the damper.

In this embodiment, the plate thicknesses of the two flange steel plates 1 need to be calculated, and generally should be above 20 mm. The flange steel plate 1 is made of ordinary steel; the energy-dissipating web is made of low yield point mild steel or ordinary steel; 2 is a triangular structure, and the side length gradually decreases from the end of the flange plate to the end of the waist hole. Its geometric dimensions are: thickness about 5mm, height about 71mm, width at the widest part about 110mm, and width at the narrowest part about 20mm; consumption The width of each waist-shaped hole on the energy-dissipating web is 12.5mm, the length is 20mm, the bolts are M12, and the minimum distance between adjacent energy-dissipating webs meets the welding construction requirements. There are usually three energy-dissipating steel webs in engineering, and there are more than twenty at most, and three are used in this embodiment.

Further description will be given below in conjunction with the application of this embodiment in the energy dissipation and shock absorption engineering of reinforced concrete frame structures.

As shown in Figure 3, the reinforced concrete frame is composed of two columns 6 and a beam 7, gable braces 5 are installed between the frame layers, connecting steel plates 9 are connected to the gable braces 5 through damper connecting bolts 8, and the bottom of the beam 7 is prefabricated. Buried connecting steel plate 9. When an earthquake occurs, the concrete frame produces interstory deformation. Under the shear force of the damper, the energy-dissipating web will yield and produce plastic deformation. The use of plastic deformation can consume seismic energy and reduce interstory deformation and earthquake action. Compared with common similar metal dampers, the energy-dissipating web is composed of two energy-dissipating steel plates with waist-shaped holes 4 connected by web connecting bolts 3, and the connecting bolts 3 make the two energy-dissipating webs close together in the horizontal direction. However, the friction force established by the connecting bolt 3 is not enough to constrain the mutual displacement of the two energy-dissipating webs in the vertical direction, which also releases the vertical constraints of the energy-dissipating webs, reducing the impact caused by the overall structure during earthquakes. Damper damage or damage to building structural components caused by the inconsistency between the vertical displacement of the damper and the vertical displacement of the damper.

The specific embodiments of the present utility model have been described above. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the utility model.

Claims (8)

1. A release vertical constraint type metal yield energy dissipation damper, characterized in that the damper comprises: Two flange plates, Several energy-dissipating steel webs connected between two flange steel plates, the energy-dissipating steel webs include two energy-dissipating plates, and waist-shaped holes are opened at the contact ends of the two energy-dissipating plates. The waist hole is tightly fitted by the bolt. 2. A release vertical restraint metal yield energy dissipation damper according to claim 1, characterized in that the energy dissipation steel webs are arranged parallel to each other. 3. A release vertical restraint type metal yield energy dissipation damper according to claim 1, characterized in that the energy dissipation plate can have a certain displacement in the vertical direction. 4. A release vertical restraint type metal yield energy dissipation damper according to claim 1, characterized in that, the energy dissipation plate is a triangular structure, and the length from the end of the flange steel plate to the end of the waist-shaped hole is slowing shrieking. 5. A release vertical restraint metal yield energy dissipation damper according to claim 1, characterized in that two waist-shaped holes are opened on each energy dissipation plate. 6. A release vertical constraint metal yield energy dissipation damper according to claim 1, characterized in that two bolts pass through the waist-shaped hole to form two energy dissipation plates into an energy dissipation web. 7. A release vertical restraint metal yield energy dissipation damper according to claim 1, characterized in that the energy dissipation plate is vertically welded between two flange steel plates. 8. A release vertical restraint type metal yield energy dissipation damper according to claim 1, characterized in that, the energy dissipation steel web is a steel plate made of mild steel or carbon steel with a low yield point.