Tension and compression type composite damping material and damping assembly

Abstract

The utility model discloses a tension and compression type composite damping material and a shock absorption assembly, and aims to solve the technical problem that an existing reinforcing device cannot meet the requirements for bearing capacity and shock resistance at the same time. The tension and compression type composite damping material comprises at least two viscoelastic damping fin layers and a tension and compression type framework layer compounded between the viscoelastic damping fin layers. The damping units are used for being attached to the two corresponding sides of the building component / structure, the embedded steel bars / anchor bolts penetrate through the building component / structure, and the two ends of the embedded steel bars / anchor bolts are tied to the damping units; according to the technical scheme, the static bearing capacity of the structure can be kept or even improved, and the good anti-seismic and damping effects can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of seismic reinforcement design technology for building structures, specifically to a tension-compression composite damping material and a shock absorption component. Background Technology

[0002] Traditional structural reinforcement methods employ bonded composite steel plates to increase structural stiffness and thus improve load-bearing capacity. However, with the increasing demand for seismic reinforcement, the limitations of traditional composite steel plate devices have become apparent: they are primarily suitable for meeting static load-bearing requirements but are ineffective in improving seismic performance. Currently, dampers, as a commonly used seismic reinforcement device, are deployed at key locations such as joints and supports. Through their unique energy dissipation mechanism, they effectively absorb and disperse seismic energy, thereby achieving structural vibration reduction. However, they cannot directly increase the load-bearing capacity of structural components, which limits their application scope to some extent. Therefore, how to innovatively improve traditional reinforcement devices to maintain or even enhance the static load-bearing capacity of structures while also achieving excellent seismic damping effects has become a crucial issue urgently needing to be addressed in the engineering field.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] In view of at least one of the above technical problems, this disclosure provides a tension-compression type composite damping material and a shock absorber assembly. This disclosure targets the tension-compression deformation characteristics, combines different forms of nickel-titanium alloy fiber skeleton structures and steel plates, and fills them with viscoelastic damping materials to assemble them into a tension-compression type composite damping shock absorber assembly to achieve the effect of seismic reinforcement.

[0005] According to one aspect of this disclosure, a tension-compression composite damping material is provided, comprising at least two viscoelastic damping sheet layers and a tension-compression skeleton layer composited between the viscoelastic damping sheet layers; the tension-compression skeleton layer is formed by interlacing double-helical nickel-titanium alloy fiber bundles; the viscoelastic damping sheet layers are made of at least one of acrylate and nitrile rubber.

[0006] In some embodiments of this disclosure, in the tension-compression skeleton layer, nickel-titanium alloy fiber bundles with a diameter of D are arranged along the main tension direction, and nickel-titanium alloy fiber bundles with a diameter of d are arranged in the direction perpendicular to it, and the ratio of D to d is 2 to 3:1.

[0007] In some embodiments of this disclosure, D is 6~10mm; d is 3~5mm.

[0008] In some embodiments of this disclosure, the spacing of the nickel-titanium alloy fiber bundles arranged along the main pulling direction is S1, and the spacing of the nickel-titanium alloy fiber bundles arranged perpendicular to the main pulling direction is S2, and the ratio of S1 to S2 is 2 to 3:1.

[0009] In some embodiments of this disclosure, S1 is 200~400mm; S2 is 100~200mm.

[0010] According to a second aspect of this disclosure, a tension-compression type damping shock absorber component is provided, including damping units for fitting to corresponding sides of a building component / structure and reinforcing bars / anchors passing through the building component / structure and connected at both ends to the damping units; the damping unit includes, from the outside to the inside, a steel plate layer, an outer damping adhesive layer, the tension-compression type composite damping material, and an inner damping adhesive layer.

[0011] In some embodiments of this disclosure, the strength of the rebar / anchor is not less than the strength of the rebar in the building component / structure.

[0012] In some embodiments of this disclosure, the damping adhesive layer is made of polyurea damping adhesive.

[0013] One or more technical solutions provided in the embodiments of this disclosure have at least one of the following technical effects or advantages:

[0014] 1. Using double-helix nickel-titanium alloy fiber bundles as the skeleton structure of tension-compression fiber composite damping material can increase the frictional energy dissipation between it and viscoelastic damping material while ensuring mechanical performance, thus achieving good vibration reduction and seismic resistance.

[0015] 2. By applying a damping adhesive layer to the surface of the composite damping material, square notched steel plates can be firmly bonded. Combined with rebar installation, they can be assembled into tension-compression type damping and shock absorption components, which can improve the load-bearing capacity of the building structure and stabilize the structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a tension-compression fiber skeleton layer in one embodiment of the present disclosure.

[0017] Figure 2 This is a schematic diagram of the structure of a single-layer tension-compression composite damping material in one embodiment of this disclosure.

[0018] Figure 3 This is a schematic diagram of the structure of a multilayer tension-compression composite damping material in one embodiment of this disclosure.

[0019] Figure 4 This is a schematic diagram of the composition of a tension-compression type damping shock absorber component in one embodiment of this disclosure.

[0020] Figure 5This is a schematic diagram of a tension-compression type damping damping component installed in a reinforced concrete beam member according to an embodiment of the present disclosure, wherein aa is a tension-compression type damping damping component.

[0021] In the above figures, 1. Steel plate layer; 2. Tension-compression composite damping material; 3. Rebar installation; 4. Reinforcing bar; 5. Rebar anchor bolt; 6. Rebar anchor bolt hole; 7. Simply supported beam member. Detailed Implementation

[0022] In the description of this disclosure, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. The terms "first," "second," etc., used in this disclosure are used to distinguish the described objects and do not have any sequential or technical meaning. And the terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages).

[0023] To better understand the technical solutions disclosed herein, the above technical solutions will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] This example discloses a tension-compression composite damping material, which is composed of a tension-compression skeleton layer filled with viscoelastic damping sheets (different materials can be selected according to different application requirements, such as acrylate or nitrile rubber). It includes at least two viscoelastic damping sheets and a tension-compression skeleton layer composited between the viscoelastic damping sheets. Considering the memory recovery characteristics of nickel-titanium alloy fibers, the tension-compression skeleton layer uses biomimetic DNA-inspired double-helix nickel-titanium alloy fiber bundles interwoven horizontally and vertically. While ensuring mechanical properties, this increases the frictional energy dissipation between the fiber and the viscoelastic damping sheets. Therefore, 3D printing technology is used to fabricate double-helix fiber bundles of different diameters from nickel-titanium alloy particles (such as...). Figure 1 As shown), and based on the tensile and compressive deformation characteristics, the double helical fiber bundles are fabricated into a tensile and compressive skeleton layer by setting large-diameter D fiber bundles (diameter 6~10 mm) in the main tensile direction and small-diameter d fiber bundles (diameter 3~5 mm) in the vertical direction. Figure 2Considering the stress conditions, the spacing ratio in the two directions is set to 2:1, which is consistent with the diameter ratio. To facilitate subsequent reinforcement, the spacing S1 of the large-diameter D fiber bundles is set to 200~400mm, and the spacing S2 of the small-diameter d fiber bundles is set to 100~200mm. Then, through a preheating and vulcanization process, the viscoelastic damping sheet is filled into the tension-compression skeleton layer, forming a laminated structure of viscoelastic damping material sheet-tension-compression skeleton-viscoelastic damping material sheet, i.e., tension-compression composite damping material 2. Figure 3 ), and can be stacked in multiple layers according to structural energy consumption requirements ( Figure 4 ).

[0026] Example 2

[0027] This example discloses a tension-compression type damping shock absorber component. See [link to relevant documentation]. Figure 5 The damping device includes damping units for fitting to the corresponding sides of the building component / structure and rebar 3 / rebar anchor bolt 5 that pass through the building component / structure and are tied to the damping units at both ends; the damping unit includes, from the outside to the inside, a steel plate layer (square notched steel plate) 1, an outer polyurea damping adhesive layer, a tension-compression type composite damping material 2 as described in Example 1, and an inner polyurea damping adhesive layer. To enhance structural load-bearing capacity and maintain structural stability, polyurea damping adhesive is applied to the surface of the tension-compression composite damping material 2, and steel plate layer 1 is then bonded (the steel plate has good tensile strength; bonding the steel plate enhances the load-bearing capacity and stiffness of the component or damping material, and the combination of the steel plate and damping material can more effectively control vibration and reduce noise; the damping material converts mechanical vibration energy and acoustic energy into heat energy for dissipation, thereby achieving vibration reduction and noise reduction). This is combined with rebar anchoring technology, where rebar 3 / anchor bolts 5 are inserted into the building component / structure and connected at both ends to the damping unit (the strength of the rebar in the anchoring is not lower than the strength of the original component's rebar), and then assembled into the tension-compression damping vibration reduction component of this example. Figure 5 ).

[0028] The aforementioned tension-compression damping damping component is applied to a simply supported beam 7. First, the surface of the simply supported beam 7 is roughened in a square pattern. Then, holes 6 are drilled for rebar installation. The tension-compression damping component is installed in the beam, and polyurea damping adhesive is applied between the tension-compression composite damping material 2 and the contact surface of the beam, thus completing the seismic reinforcement of the tension-compression damping component. Using the tension-compression damping component provided in this application to reinforce reinforced concrete beams not only achieves seismic reduction and resistance but also improves the structural bearing capacity and stability of the beam.

[0029] Although some preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0030] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from the spirit and scope of its technical concept. Therefore, if such modifications and variations to this disclosure fall within the scope of the claims of this application and their equivalents, the scope of protection of this disclosure is also intended to include such modifications and variations.

Claims

1. A tension-compression composite damping material, characterized in that, It includes at least two viscoelastic damping sheet layers and a tension-compression skeleton layer composited between the viscoelastic damping sheet layers; the tension-compression skeleton layer is composed of double-helix nickel-titanium alloy fiber bundles interwoven in both directions; the viscoelastic damping sheet layers are made of acrylic ester or nitrile rubber.

2. The tension-compression composite damping material according to claim 1, characterized in that, In the tension-compression type skeleton layer, nickel-titanium alloy fiber bundles with a diameter of D are arranged along the main tension direction, and nickel-titanium alloy fiber bundles with a diameter of d are arranged in the direction perpendicular to it, and the ratio of D to d is 2~3:

1.

3. The tension-compression composite damping material according to claim 2, characterized in that, The value of D is 6~10mm; the value of d is 3~5mm.

4. The tension-compression composite damping material according to claim 2, characterized in that, The spacing of the nickel-titanium alloy fiber bundles arranged along the main pulling direction is S1, and the spacing of the nickel-titanium alloy fiber bundles arranged perpendicular to the main pulling direction is S2, and the ratio of S1 to S2 is 2~3:

1.

5. The tension-compression composite damping material according to claim 4, characterized in that, S1 is 200~400mm; S2 is 100~200mm.

6. A tension-compression type damping vibration reduction component, characterized in that, It includes damping units for fitting to the corresponding sides of the building component / structure and rebars / anchors that pass through the building component / structure and are connected to the damping units at both ends; the damping unit includes, from the outside to the inside, a steel plate layer, an outer damping adhesive layer, the tension-compression composite damping material as described in claim 1, and an inner damping adhesive layer.

7. The tension-compression type damping vibration reduction component according to claim 6, characterized in that, The strength of the rebar / anchor is not less than the strength of the rebar in the building component / structure.

8. The tension-compression type damping vibration reduction component according to claim 6, characterized in that, The damping adhesive layer is made of polyurea damping adhesive.

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