Insertion piece type viscous damping wall with vertical protection function

Abstract

The invention relates to the technical field of viscous damping walls, in particular to an insertion piece type viscous damping wall with a vertical protection function. Comprising a liquid containing box, an upper connecting plate is arranged above the liquid containing box, the lower side of the upper connecting plate and the upper side of the liquid containing box are both provided with notches which are distributed in a mirror image and in a linear array mode, the notches of the upper connecting plate and the notches of the liquid containing box are both fixedly connected with fixing pieces, the fixing pieces are detachably connected with first connecting pieces, and the first connecting pieces are detachably connected with the liquid containing box. The connecting positions of the fixing pieces and the adjacent first connecting pieces are of a dovetail mortise and tenon joint structure, and a buffering assembly is arranged between every two adjacent first connecting pieces in the same vertical direction. When the upper connecting plate and the liquid containing box generate relative displacement in the thickness direction of the wall body, by means of the dovetail tenon-and-mortise structures at the connecting positions of the fixing pieces and the adjacent first connecting pieces, the inclined faces of the fixing pieces and the adjacent first connecting pieces are engaged, friction force and a mechanical interlocking effect are generated, and therefore shear resistance is provided.

Description

Technical Field

[0001] This invention relates to the field of viscous damping wall technology, and more particularly to an insert-type viscous damping wall with vertical protection. Background Technology

[0002] As building structures develop towards higher heights and larger spans, higher requirements are placed on their resistance to dynamic loads such as earthquakes and wind vibrations. In recent years, energy dissipation and vibration reduction technologies have been widely used in engineering practice due to their good seismic performance and recoverability. Among them, viscous damping walls, as a typical velocity damper, have become an important part of structural vibration reduction systems due to their advantages such as high energy dissipation efficiency, rapid response, and convenient installation.

[0003] Currently, most mainstream viscous damping walls are designed to withstand in-plane shear displacement along the length of the wall, making them suitable for lateral force resistance requirements under conventional earthquake loading. However, although existing viscous damping walls perform well under conventional conditions, they exhibit complex three-dimensional spatial motions under extreme earthquake loading (such as near-fault strong earthquakes or multi-dimensional combined ground motions), including reciprocating displacement along the wall thickness. Under this atypical loading mode, existing damping walls reveal significant structural vulnerabilities. Because of the lack of restraint, the thin-walled steel plates inside are prone to local buckling or even overall instability under the coupling of tension, compression and bending in the front and rear directions, resulting in a sharp drop in stiffness and degradation of damping force. Summary of the Invention

[0004] To address the shortcomings mentioned in the background section, this invention provides an insert-type viscous damping wall with vertical protection.

[0005] The technical solution of the present invention is as follows: a plug-in type viscous damping wall with vertical protection, comprising a liquid tank, a liquid storage chamber provided inside the liquid tank, the liquid storage chamber being filled with a viscous liquid, an upper connecting plate provided above the liquid tank, an inner steel plate fixedly connected to the upper connecting plate located inside the liquid storage chamber, the inner steel plate being in contact with the viscous liquid in the liquid storage chamber, mirrored and linearly arrayed notches provided on the lower side of the upper connecting plate and the upper side of the liquid tank, fixing members fixedly connected to the notches of the upper connecting plate and the liquid tank, the width of the fixing member being smaller than the width of the notches of the upper connecting plate and the liquid tank, the fixing member being detachably connected to a first connecting member, the connection position of the fixing member and the adjacent first connecting member being a dovetail tenon structure, a buffer assembly provided between two vertically adjacent first connecting members, the buffer assembly being used to generate resistance when the upper connecting plate and the liquid tank undergo relative displacement.

[0006] As an improvement to the above solution, both the lower side of the upper connecting plate and the upper side of the liquid tank are detachably connected to mirror-distributed L-shaped frames. The L-shaped frames are fixed with a linear array of blocking blocks, and the number of blocking blocks corresponds one-to-one with the number of the fixing components. The blocking blocks on the upper connecting plate and the blocking blocks on the liquid tank are used to fill the remaining parts of the corresponding gaps.

[0007] As an improvement to the above solution, the L-shaped frame is provided with a protrusion, and both the liquid tank and the upper connecting plate are provided with grooves that are inserted into the corresponding protrusions.

[0008] As an improvement to the above solution, the buffer assembly includes a hinge, which is hinged to one of two adjacent first connecting members in the same vertical direction. A hinge shell is slidably connected to the side of the hinge away from the adjacent first connecting member. A spring is provided inside the hinge shell that contacts the hinge. A connecting frame is provided on the opposing side of the hinge shell and the other first connecting member. One of the connecting frames is hinged to the first connecting member, and the other connecting frame is detachably connected to the hinge shell. A second connecting member is detachably connected between the two connecting frames.

[0009] As an improvement to the above solution, the projection of the upper connecting plate onto the horizontal plane is rectangular, and the rotation axis of the connecting frame and the rotation axis of the hinge are both parallel to the short side of the upper connecting plate.

[0010] As an improvement to the above solution, both the first connector and the second connector are made of mild steel.

[0011] As an improvement to the above solution, the second connector adopts a variable cross-section design that is narrow in the middle and wide at both ends, and the variable cross-section area is treated with a rounded transition.

[0012] As an improvement to the above solution, the connecting frame is slidably connected to a sliding shell for fixing the second connecting member.

[0013] As an improvement to the above solution, the liquid tank is fixedly connected to a slide rail located inside the liquid storage cavity, and the inner steel plate is fixedly connected to a sliding frame, which slides within the slide rail.

[0014] As an improvement to the above solution, a gap is left between the slide rail and the sliding frame.

[0015] The beneficial effects of this invention are as follows: When the upper connecting plate and the liquid tank undergo relative displacement along the wall thickness direction, the dovetail tenon structure at the connection position of the fixing member and the adjacent first connecting member enables the inclined surfaces of the fixing member and the adjacent first connecting member to interlock and generate friction and mechanical interlocking effect, thereby providing shear resistance, suppressing the horizontal sliding between the upper connecting plate and the liquid tank along the wall thickness direction, suppressing the deformation of the inner steel plate along the wall thickness direction, and enabling the inner steel plate to move linearly along the wall thickness direction, thereby achieving vertical protection of the inner steel plate; By using the compression of springs and the viscous damping force generated by viscous liquid, the energy generated by the horizontal relative displacement along the length of the wall is dissipated. The damping force generated by the above-mentioned combined energy dissipation mechanism effectively consumes the energy input by the earthquake, suppresses the relative displacement between floors along the length of the wall, thereby reducing the overall effect of the earthquake on the building structure, reducing the risk of damage to the main structure, and improving the seismic performance and safety of the building. When the amplitude of the shaking of the building along the length of the wall caused by the earthquake is greater than the deformation capacity of the spring when it is compressed to its limit, the second connector yields and enters the plastic deformation stage, thereby preventing the expansion of the floor structure damage. When the force exerted on the building by the earthquake disappears, the elastic potential energy stored in the spring during the compression and deformation process begins to be released. Combined with the elastic recovery capability of the second connecting part itself, it drives the relative displacement between the upper connecting plate and the liquid tank to gradually decrease, causing the two to return to their initial positions and realize the automatic reset function after the earthquake. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention; Figure 3 This is a three-dimensional structural cross-sectional view of the liquid-containing tank of the present invention; Figure 4 This is a three-dimensional structural diagram of the slide rail and sliding frame of the present invention; Figure 5 This is a three-dimensional sectional view of the connecting plate of the present invention; Figure 6 This is a three-dimensional structural diagram showing the positional relationship between the fastener and the first connector of the present invention; Figure 7 This is an exploded three-dimensional view of the sliding shell of the present invention; Figure 8 This is an exploded three-dimensional view of the fastener of the present invention; Figure 9 This is a three-dimensional structural cross-sectional view of the hinged shell of the present invention.

[0017] The labels in the diagram are as follows: 1-Liquid tank, 2-Liquid storage chamber, 3-Upper connecting plate, 4-Inner steel plate, 5-Fixing component, 6-First connecting component, 7-L-shaped frame, 8-Blocking block, 9-Protrusion, 10-Hinge, 11-Hinge shell, 12-Spring, 13-Connecting frame, 14-Second connecting component, 15-Sliding shell, 16-Slide rail, 17-Sliding frame. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] To address the problem that existing damping walls, when subjected to combined tensile, compressive, and bending forces along the wall's length, are prone to local buckling or overall instability due to a lack of effective support, leading to a significant reduction in structural stiffness and a decline in damping performance, this invention is described below: Example 1 A type of insert-type viscous damping wall with vertical protection, such as Figures 1-7 As shown, the device includes a liquid tank 1, a liquid storage chamber 2 inside the liquid tank 1, and a viscous liquid inside the liquid storage chamber 2. An upper connecting plate 3 is provided above the liquid tank 1, and an inner steel plate 4 located inside the liquid storage chamber 2 is fixedly connected to the upper connecting plate 3. The inner steel plate 4 is in contact with the viscous liquid inside the liquid storage chamber 2. Mirror-image notches are provided on the lower side of the upper connecting plate 3 and the upper side of the liquid tank 1, and fixing members 5 are fixedly connected to the notches of the upper connecting plate 3 and the liquid tank 1. The width of the fixing member 5 is smaller than the width of the notches on the upper connecting plate 3 and the liquid tank 1. The fixing member 5 is detachably connected to a first connecting member 6. The connection position between the fixing member 5 and the adjacent first connecting member 6 is a dovetail tenon structure. A buffer assembly is provided between two adjacent first connecting members 6 in the same vertical direction. The buffer assembly is used to generate resistance when the upper connecting plate 3 and the liquid tank 1 undergo relative displacement.

[0020] In the above scheme, there are two liquid storage chambers 2, located on the front and rear sides inside the liquid tank 1. There are also two inner steel plates 4. A shield can be installed on the upper side of the liquid tank 1 to keep the viscous liquid in the storage chambers 2 clean. When the upper connecting plate 3 and the liquid tank 1 undergo relative displacement, the dovetail tenon structure at the connection point of the fixing member 5 and the adjacent first connecting member 6 causes the inclined surfaces of the fixing member 5 and the adjacent first connecting member 6 to interlock, generating friction and a mechanical interlocking effect. This provides shear resistance in the front-rear direction, suppressing the shearing force between the upper connecting plate 3 and the liquid tank 1. The horizontal sliding in the front-to-back direction suppresses the deformation of the inner steel plate 4 along the wall thickness direction, allowing the inner steel plate 4 to move linearly along the wall thickness direction, thereby achieving vertical protection for the inner steel plate 4. Due to the "staggered distribution" characteristic of this dovetail tenon structure, that is, it has a self-locking characteristic in the vertical direction. In addition, under cyclic reciprocating loads, this structure can also generate dry friction energy dissipation through small interface sliding, which, together with the viscous damping mechanism, dissipates seismic energy (i.e., the resistance generated when the inner steel plate 4 squeezes the viscous liquid in the liquid storage cavity 2), improving the seismic performance of this device.

[0021] like Figure 3 and Figure 5 As shown, both the lower side of the upper connecting plate 3 and the upper side of the liquid tank 1 are detachably connected to mirror-distributed L-shaped frames 7. The L-shaped frames 7 are fixed with linearly distributed blocking blocks 8. The number of blocking blocks 8 corresponds one-to-one with the number of fixing parts 5. The blocking blocks 8 on the upper connecting plate 3 and the blocking blocks 8 on the liquid tank 1 are used to fill the remaining parts of the corresponding gaps.

[0022] In the above scheme, the first connecting member 6 is limited after the fixing member 5 and the adjacent first connecting member 6 are locked together.

[0023] like Figure 5 As shown, the L-shaped frame 7 is provided with protrusions 9, and both the liquid tank 1 and the upper connecting plate 3 are provided with grooves that are inserted into the corresponding protrusions 9.

[0024] In the above scheme, when the protrusion 9 is inserted into the groove of the upper connecting plate 3 or the groove of the liquid tank 1, the L-shaped frame 7 is fixed to the upper connecting plate 3 or the liquid tank 1 to facilitate subsequent fixing (the essence of "plug-in type" is "modular" and "detachable"). In this invention, the L-shaped frame 7 is fixed to the upper connecting plate 3 or the liquid tank 1 by bolts.

[0025] like Figures 6-9As shown, the buffer assembly includes a hinge 10, which is hinged to the lower of two adjacent first connecting members 6 in the same vertical direction. A hinge shell 11 is slidably connected to the side of the hinge 10 away from the adjacent first connecting member 6. A spring 12 is provided inside the hinge shell 11 and contacts the hinge 10. A connecting frame 13 is provided on the opposing sides of the hinge shell 11 and the adjacent upper hinge 10. The upper connecting frame 13 is hinged to the corresponding first connecting member 6, and the lower connecting frame 13 is detachably connected to the corresponding hinge shell 11 without relative rotation between them. A second connecting member 14 is detachably connected between the two connecting frames 13. The projection of the upper connecting plate 3 on the horizontal plane is rectangular. The rotation axis of the connecting frame 13 rotatably connected to the upper first connecting member 6, the rotation axis of the hinge 10 and the lower first connecting member 6 are parallel to the short side of the upper connecting plate 3. The first connecting member 6 and the second connecting member 14 are both made of mild steel.

[0026] In the above scheme, the spring 12 is compressed by the relative sliding of the hinge 10 and the hinge shell 11, thereby generating resistance. This resistance is combined with the resistance provided by the viscous liquid in the liquid storage chamber 2 to the inner steel plate 4. Through this combination, the energy input by the earthquake is consumed, the relative displacement between floors is suppressed, and the overall effect of the earthquake on the building structure is reduced. The first connector 6 and the second connector 14 can be LY100 mild steel.

[0027] like Figure 7 and Figure 8 As shown, the second connector 14 adopts a variable cross-section design that is narrow in the middle and wide at both ends, and the variable cross-section area is treated with a rounded transition.

[0028] In the above solution, the circular arc transition treatment alleviates the stress concentration phenomenon under repeated loading, thereby improving the durability and stability during long-term reciprocating deformation.

[0029] like Figure 7 As shown, the connecting frame 13 is slidably connected to a sliding shell 15 for fixing the second connecting member 14.

[0030] In the above scheme, there is friction between the sliding shell 15 and the connecting frame 13, which is used to prevent the sliding shell 15 from moving arbitrarily without human interference. The sliding shell 15 located on the lower side is slidably connected to the corresponding hinge shell 11.

[0031] Working principle: When this device is needed, the operator places it in the required position, then installs the upper connecting plate 3 to the upper floor and the liquid tank 1 to the lower floor. In the event of an earthquake, the upper and lower floors sway laterally, causing the upper connecting plate 3 and the liquid tank 1 to undergo lateral relative displacement. The connecting frame 13 rotates along the upper first connecting member 6, and the hinge 10 rotates in the opposite direction relative to the upper first connecting member 6 along the lower first connecting member 6. During this process, the related parts of two adjacent first connecting members 6 in the same vertical direction change from a vertical position to an inclined position. The hinge 10 and the hinge shell 11 slide relative to each other, which in turn compresses the spring 12 and generates resistance. When the upper connecting plate 3 and the liquid tank 1 are relatively displaced, the inner steel plate 4 slides in the liquid storage cavity 2. The viscous liquid in the liquid storage cavity 2 provides resistance to the inner steel plate 4. The viscous liquid generates viscous damping force, which dissipates energy in the horizontal direction. The damping force generated by the above-mentioned combined energy dissipation mechanism effectively consumes the energy input by the earthquake, suppresses the relative displacement between floors, thereby reducing the overall effect of the earthquake on the building structure, reducing the risk of damage to the main structure, and improving the seismic performance and safety of the building.

[0032] When an earthquake causes the building to sway from side to side with an amplitude greater than the deformation capacity of spring 12 when it is compressed to its limit position, the second connector 14 (made of mild steel) begins to yield and enters the plastic deformation stage. The second connector 14 (made of mild steel) provides additional passive damping to prevent the expansion of damage to the floor structure.

[0033] Because existing viscous damping walls can only provide unidirectional energy dissipation resistance and lack automatic reset function, they are prone to residual deformation accumulation after an earthquake, making it impossible for the building to automatically return to its original position. This invention, however, not only provides damping force but also has reset capability, effectively reducing post-earthquake displacement and improving the structure's post-earthquake recoverability and safety. Details are as follows: When the force exerted on the building by the earthquake disappears, the elastic potential energy stored in the spring 12 during the compression deformation process begins to be released, generating a restoring force to restore the original shape. At the same time, although the second connecting piece 14 undergoes plastic deformation during the earthquake, it still retains some elastic recovery ability. The two work together to drive the relative displacement between the upper connecting plate 3 and the liquid tank 1 to gradually decrease, prompting them to return to their initial positions, realizing the automatic reset function after the earthquake, and improving the post-earthquake usability and repair efficiency of the building.

[0034] When the building is subjected to extreme earthquake forces, and the liquid tank 1 and the upper connecting plate 3 move back and forth in the front and back directions, the dovetail tenon structure used at the connection point of the fastener 5 and the adjacent first connecting piece 6 makes the inclined surfaces of the two interlock, thereby generating friction and mechanical interlocking. This provides the ability to resist shear forces in the front and back directions, thereby limiting the horizontal relative sliding between the upper connecting plate 3 and the liquid tank 1 in the front and back directions, suppressing the deformation of the inner steel plate 4 in the direction of wall thickness, and making the inner steel plate 4 move linearly in the direction of wall thickness, thereby achieving vertical protection for the inner steel plate 4.

[0035] When the first connector 6 and its parts need to be repaired or replaced, first remove the bolts connecting the L-shaped frame 7 to the upper connecting plate 3 or the liquid tank 1, then remove the L-shaped frame 7 so that the L-shaped frame 7 and its blocking block 8 no longer obstruct the first connector 6. At that time, the staff will move the first connector 6 and its parts to the right, remove the damaged first connector 6 and its parts and replace them with new ones.

[0036] When the second connector 14 needs to be replaced, the operator moves the two adjacent sliding shells 15 in opposite directions to release the restriction on the second connector 14, removes the old second connector 14, and replaces the new second connector 14 between the two adjacent connecting frames 13. Then, the operator moves the two adjacent sliding shells 15 towards each other to achieve the restriction on the second connector 14.

[0037] Example 2 Based on Example 1, such as Figure 3 and Figure 4 As shown, the liquid tank 1 is fixedly connected to a slide rail 16 located in the liquid storage chamber 2, and the inner steel plate 4 is fixedly connected to a sliding frame 17. The sliding frame 17 slides within the slide rail 16, and a gap is left between the slide rail 16 and the sliding frame 17.

[0038] In the above scheme, since there are two inner steel plates 4, there are also two sliding frames 17 and two slide rails 16. The two sliding frames 17 and slide rails 16 are mirror-distributed in the liquid storage cavity 2. Through the gap between the rails 16 and the sliding frames 17, the sliding frames 17 and the inner steel plates 4 are ensured to have the freedom of horizontal reciprocating motion, while the vertical sliding displacement of the inner steel plates 4 is restricted.

[0039] Working principle: When a building is subjected to an earthquake, the liquid tank 1 and the upper connecting plate 3 reciprocate in the left and right directions, causing the sliding frame 17 to slide within the adjacent slide rail 16. The reserved gap design between the sliding frame 17 and the slide rail 16 ensures that the inner steel plate 4 can slide freely in the liquid storage chamber 2, avoiding jamming. At the same time, during the reciprocating motion in the front and back directions, the structure can also effectively adapt to vertical displacement, preventing the sliding frame 17 and the slide rail 16 from being crushed due to excessive relative displacement, thereby improving the stability and operational reliability of the device in long-term service.

[0040] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the invention. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention.

Claims

1. A gapped viscous damping wall with vertical protection, characterized in that, The utility model provides a kind of liquid storage tank, which comprises a liquid storage tank (1), a liquid storage cavity (2) is arranged in the liquid storage tank (1), viscous liquid is injected in the liquid storage cavity (2), an upper connecting plate (3) is arranged above the liquid storage tank (1), an inner steel plate (4) located in the liquid storage cavity (2) is fixedly connected to the upper connecting plate (3), the inner steel plate (4) is in contact with the viscous liquid in the liquid storage cavity (2), the lower side of the upper connecting plate (3) and the upper side of the liquid storage tank (1) are both provided with mirror image and linear array distribution notch, the notch of the upper connecting plate (3) and the notch of the liquid storage tank (1) are both fixedly connected with fixing piece (5), the width of the fixing piece (5) is less than the width of the notch of the upper connecting plate (3) and the liquid storage tank (1), the fixing piece (5) is detachably connected with first connecting piece (6), the connecting position of the fixing piece (5) and the adjacent first connecting piece (6) is in dovetail mortise structure, a buffer assembly is arranged between the same vertical adjacent two first connecting pieces (6), and the buffer assembly is used to generate resistance when the upper connecting plate (3) and the liquid storage tank (1) generate relative displacement.

2. A shear wall according to claim 1, wherein, The lower side of the upper connecting plate (3) and the upper side of the liquid storage tank (1) are both detachably connected with mirror image distribution L-shaped frame (7), the L-shaped frame (7) is fixedly connected with linear array distribution blocking block (8), the number of the blocking block (8) corresponds to the number of the fixing piece (5), and the blocking block (8) on the upper connecting plate (3) and the blocking block (8) on the liquid storage tank (1) are respectively used to fill the remaining part of the corresponding notch.

3. A shear wall according to claim 2, wherein, The L-shaped frame (7) is provided with a protrusion (9), and the liquid storage tank (1) and the upper connecting plate (3) are both provided with a groove matched with the protrusion (9).

4. The infill wall with vertical protection according to claim 1, characterized in that, The buffer assembly comprises a hinge piece (10), the hinge piece (10) is hinged to the first connecting piece (6) of one of the same vertical adjacent two first connecting pieces (6), the side of the hinge piece (10) away from the adjacent first connecting piece (6) is slidably connected with a hinge shell (11), the hinge shell (11) is provided with a spring (12) in contact with the hinge piece (10), the opposite sides of the hinge shell (11) and the other first connecting piece (6) are both provided with a connecting frame (13), one of the connecting frames (13) is hinged to the first connecting piece (6), the other connecting frame (13) is detachably connected to the hinge shell (11), and the second connecting piece (14) is detachably connected between the two connecting frames (13).

5. A shear wall according to claim 4, wherein, The projection of the upper connecting plate (3) on the horizontal plane is a rectangle, and the rotation axes of the connecting frames (13) and the hinge piece (10) are parallel to the short side of the upper connecting plate (3).

6. A shear wall according to claim 5, wherein, The first connecting piece (6) and the second connecting piece (14) are both soft steel.

7. A shear wall according to claim 6, wherein, The second connecting piece (14) adopts a variable cross-section design with narrow middle and wide ends, and the variable cross-section region adopts a circular arc transition treatment.

8. A shear wall according to claim 7, wherein, The connecting frame (13) is slidably connected with a sliding shell (15) for fixing the second connecting piece (14).

9. The infill pad type viscous damping wall according to claim 1, wherein, The liquid containing tank (1) is fixedly connected with a sliding rail (16) located in the liquid storage cavity (2), and the inner steel plate (4) is fixedly connected with a sliding frame (17) which slides in the sliding rail (16).

10. A shear wall according to claim 9, wherein, A gap is left between the sliding rail (16) and the sliding frame (17).

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