Viscoelastic shear damper

Abstract

The application discloses a kind of viscoelastic shear type damper, including oppositely arranged upper end plate and lower end plate, upper end plate and lower end plate are provided with viscoelastic shear energy dissipation plate between, viscoelastic shear energy dissipation plate is alternately stacked by two two multilayer plywood and multilayer rubber layer;Upper end plate is provided with upper constraint plate on the both sides of viscoelastic shear energy dissipation plate downwards, lower end plate is provided with lower constraint plate on the both sides of viscoelastic shear energy dissipation plate upwards, deformation gap is left between each upper constraint plate and corresponding lower constraint plate, the lower edge of each upper constraint plate is provided with slide rail, each slide rail is slidably connected with slide bar, the upper edge of each lower constraint plate is provided with limiting strip, and a plurality of limiting slide shafts are provided downward in each slide bar, and a plurality of limiting slide holes corresponding to corresponding limiting slide shafts are formed downward through each limiting strip one by one.The application can have better energy dissipation effect under large earthquake, small earthquake, low frequency and high frequency vibration, has higher durability, and has longer service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building structure anti-seismic disaster prevention, and particularly relates to a viscoelastic shear type damper. BACKGROUND

[0002] Energy dissipation damper is one of the important means to protect buildings and internal equipment when an earthquake occurs. Traditional seismic design mainly relies on strengthening the stiffness and strength of the main material structure, but even if the structure is strengthened, it cannot completely avoid the vibration and damage of the building under high intensity vibration, so energy dissipation damper is widely used in building structure. The basic structure of the shear type damper is composed of two end plates and a middle energy dissipation plate connected together. When the building is displaced when an earthquake occurs, the energy dissipation plate yields and deforms to absorb and dissipate the energy caused, thereby playing a role in shock absorption and anti-seismic.

[0003] Although the ordinary metal shear damper can reduce the vibration and damage of the building to a certain extent, it also has the following defects: 1. limited damping effect: the damping characteristics of the ordinary metal shear damper mainly depend on the deformation and deformation of the metal material, and the damping effect is relatively limited. For large amplitude vibration and earthquake impact, the damping capacity of the ordinary metal shear damper is relatively insufficient. 2. Frequency dependence: the damping effect of the ordinary metal shear damper is greatly affected by the frequency. The damping effect is good at low frequency vibration, but the damping effect decreases at high frequency vibration. 3. Low durability: the ordinary metal shear damper is prone to fatigue and damage in long-term operation, and its service life is relatively short. SUMMARY

[0004] The purpose of the present application is to provide a viscoelastic shear type damper with good damping effect, which can have good energy dissipation effect when encountering a large earthquake, and can have good energy dissipation effect at low and high frequency vibration, and has higher durability and longer service life.

[0005] The above technical purpose of the present application is achieved by the following technical scheme:

[0006] A viscoelastic shear type damper, comprising an upper end plate and a lower end plate arranged oppositely, a viscoelastic shear energy dissipation plate is arranged between the upper end plate and the lower end plate, the viscoelastic shear energy dissipation plate is formed by alternately stacking a plurality of layers of plates and a plurality of layers of rubber layers two by two, and the upper end plate, the lower end plate and each layer of plate are vulcanized with the adjacent rubber layer;

[0007] The upper end plate is provided with upper constraint plates on both sides of the viscoelastic shear energy dissipation plate downwards, and the lower end plate is provided with lower constraint plates on both sides of the viscoelastic shear energy dissipation plate upwards, a deformation gap is left between each upper constraint plate and the corresponding lower constraint plate, the lower edge of each upper constraint plate is provided with a sliding rail arranged along the length direction thereof, each sliding rail is slidably connected with a sliding bar arranged along the length direction thereof, the upper edge of each lower constraint plate is provided with a limiting strip arranged along the length direction thereof, and a plurality of limiting sliding shafts are arranged downwards on each sliding bar, a plurality of limiting sliding holes corresponding to the limiting sliding shafts are formed downwards through each limiting strip, and each limiting sliding shaft is slidably connected with the corresponding limiting sliding hole.

[0008] When the building shakes due to the earthquake, the shaking of the building structure drives the viscoelastic shear energy dissipation plate of the damper to shear deform, and the rubber layer is driven to shake, and the energy generated by the earthquake is consumed in the process, so that the effect of shock absorption and shock prevention is achieved.

[0009] Meanwhile, in the shearing deformation process of the viscoelastic shear energy dissipation plate, the upper constraint plate and the lower constraint plate move in different directions, the sliding bar slides left and right relative to the sliding rail, and the limiting sliding shaft slides relative to the limiting sliding hole, so that the upper constraint plate and the lower constraint plate are always connected, the viscoelastic shear energy dissipation plate is constrained, and it is ensured that the viscoelastic shear energy dissipation plate will not buckle and deform.

[0010] Further provided in the application is that a plurality of transverse and vertical staggered stiffening ribs are arranged on the outer side of each upper constraint plate and each lower constraint plate.

[0011] Further provided in the application is that each sliding rail is a long strip with a T-shaped cross section, and each sliding bar is provided with a T-shaped sliding groove matched with the sliding rail.

[0012] Further provided in the application is that an isolation layer is arranged between each upper constraint plate and each lower constraint plate on both sides of the viscoelastic shear energy dissipation plate.

[0013] Further provided in the application is that a plurality of mounting holes are formed in both ends of the upper end plate and the lower end plate.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] Firstly, the damper has good energy dissipation effect, can play a good energy dissipation and shock absorption effect whether in a large earthquake or a small earthquake, is less affected by the vibration frequency, can play a good energy dissipation and shock absorption effect whether in high-frequency vibration or low-frequency vibration, and is not easy to fatigue and damage in long-term work, and has a longer service life.

[0016] Secondly, in the shear energy consumption process of the viscoelastic shear energy consumption plate caused by the earthquake, and the relative up-down movement of the upper end plate and the lower end plate during the earthquake, the sliding bar is clamped with the limiting strip through the limiting sliding shaft and the limiting sliding hole, thereby playing a limiting role, so that the upper constraint plate and the lower constraint plate on the same side can only relatively displace left and right, and cannot relatively displace front and back, and the viscoelastic shear energy consumption plate is prevented from buckling deformation.

[0017] Thirdly, the viscoelastic shear energy consumption plate of the present application is formed by alternately stacking a plurality of layers of plates and a plurality of layers of rubber layers two by two, and has a strong resetting function after an earthquake due to the addition of the rubber layers. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a schematic diagram of the overall structure of the present application;

[0019] Fig. 2 is used to show the connection relationship between the upper constraint plate and the lower constraint plate;

[0020] Fig. 3 is a working state diagram of the present application.

[0021] In the figure: 1, upper end plate; 2, lower end plate; 3, viscoelastic shear energy consumption plate; 31, layer plate; 32, rubber layer; 4, mounting hole; 5, upper constraint plate; 51, sliding rail; 52, sliding bar; 53, T-shaped sliding groove; 54, limiting sliding shaft; 6, lower constraint plate; 61, limiting strip; 62, limiting sliding hole; 7, stiffening rib; 8, isolation layer; 9, deformation gap. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below with reference to the accompanying drawings.

[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] Embodiment, with reference to Figs. 1-3 A viscoelastic shear type damper, comprising an upper end plate 1, a lower end plate 2 and a viscoelastic shear energy consumption plate 3 between the two. Four mounting holes 4 are formed at both ends of the upper end plate 1 and the lower end plate 2. The viscoelastic shear energy consumption plate 3 is formed by alternately stacking a plurality of layers of plates 31 and a plurality of layers of rubber layers 32 two by two, and the upper end plate 1, the lower end plate 2 and each layer of plate 31 and the adjacent rubber layer 32 are bonded together by vulcanization.

[0025] The upper end plate 1 is provided with an upper constraint plate 5 on both sides of the viscoelastic shear energy dissipation plate 3, and the lower end plate 2 is provided with a lower constraint plate 6 on both sides of the viscoelastic shear energy dissipation plate 3. In order to enhance the strength of the upper constraint plate 5 and the lower constraint plate 6, a plurality of transversely and vertically staggered stiffening ribs 7 are arranged on the outer side of each upper constraint plate 5 and each lower constraint plate 6. A separation layer 8 is arranged between the viscoelastic shear energy dissipation plate 3 and each upper constraint plate 5 and each lower constraint plate 6, so that the viscoelastic shear energy dissipation plate 3 can move relative to the upper constraint plate 5 and the lower constraint plate 6. A deformation gap 9 is left between each upper constraint plate 5 and the corresponding lower constraint plate 6, so that the upper constraint plate 5 and the lower constraint plate 6 will not collide together during the shear energy dissipation process.

[0026] And the lower edge of each upper constraint plate 5 is provided with a sliding rail 51 along the length direction thereof, each sliding rail 51 is connected with a sliding bar 52 along the length direction thereof, each sliding rail 51 is a long strip with a T-shaped cross section, each sliding bar 52 is provided with a T-shaped sliding groove 53 matched with the sliding rail 51, and the upper edge of each lower constraint plate 6 is provided with a limiting bar 61 along the length direction thereof. Each sliding bar 52 is provided with a plurality of limiting sliding shafts 54 downward, and a plurality of limiting sliding holes 62 corresponding to the limiting sliding shafts 54 are formed downward through each limiting bar 61, and each limiting sliding shaft 54 is in sliding connection with the corresponding limiting sliding hole 62.

[0027] Working principle: when the earthquake makes the building sway, the sway of the building structure drives the viscoelastic shear energy dissipation plate 3 of the damper to shear deformation, and the layer plate 31 is driven relative to the rubber layer 32, and the rubber layer 32 consumes the energy generated by the earthquake in the process, so as to achieve the effect of shock absorption and shock prevention.

[0028] At the same time, during the shear deformation process of the viscoelastic shear energy dissipation plate 3, the upper constraint plate 5 and the lower constraint plate 6 move in different directions, the sliding bar 52 slides left and right relative to the sliding rail 51, and the limiting sliding shaft 54 slides relative to the limiting sliding hole 62, so that the upper constraint plate 5 and the lower constraint plate 6 are always connected, the viscoelastic shear energy dissipation plate 3 is constrained, and it is ensured that the viscoelastic shear energy dissipation plate 3 will not be buckled and deformed.

[0029] The specific embodiment is only an explanation of the application, and is not a limitation of the application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as it is within the scope of the claims of the application, it is protected by the patent law.

Claims

1. A viscoelastic shear damper comprising upper and lower end plates (1) and (2) arranged opposite to each other, characterized in that: Viscoelastic shear energy dissipation plates (3) are arranged between the upper end plate (1) and the lower end plate (2), the viscoelastic shear energy dissipation plates (3) are formed by alternately stacking multiple layers of plates (31) and multiple layers of rubber layers (32) two by two, the upper end plate (1), the lower end plate (2) and each layer of plate (31) are vulcanized together with the adjacent rubber layer (32); The upper end plate (1) is provided with upper constraint plates (5) on both sides of the viscoelastic shear energy dissipation plates (3) downward, the lower end plate (2) is provided with lower constraint plates (6) on both sides of the viscoelastic shear energy dissipation plates (3) upward, a deformation gap (9) is left between each upper constraint plate (5) and the corresponding lower constraint plate (6), the lower edge of each upper constraint plate (5) is provided with a sliding rail (51) arranged along the length direction thereof, each sliding rail (51) is slidably connected with a sliding bar (52) arranged along the length direction thereof, the upper edge of each lower constraint plate (6) is provided with a limiting strip (61) arranged along the length direction thereof, each sliding bar (52) is downwardly provided with multiple limiting sliding shafts (54), multiple limiting sliding holes (62) corresponding to the limiting sliding shafts (54) are formed in each limiting strip (61), and each limiting sliding shaft (54) is slidably connected with the corresponding limiting sliding hole (62).

2. A viscoelastic shear-damping damper according to claim 1, characterized in that: The outer side of each upper constraint plate (5) and each lower constraint plate (6) is provided with multiple transversely and vertically staggered stiffening ribs (7).

3. A viscoelastic shear-damping damper according to claim 1, characterized in that: Each sliding rail (51) is a long strip with a T-shaped cross section, and each sliding bar (52) is provided with a T-shaped sliding groove (53) matched with the sliding rail (51).

4. A viscoelastic shear-damping damper according to claim 1, characterized in that: Isolation layers (8) are arranged between both sides of the viscoelastic shear energy dissipation plates (3) and each upper constraint plate (5) and each lower constraint plate (6).

5. A viscoelastic shear-damping damper according to claim 1, characterized in that: Multiple mounting holes (4) are formed in both ends of the upper end plate (1) and the lower end plate (2).

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