Connection structure of viscous damper in concrete structure
Patent Information
- Application Number
- CN202521988767.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-16
AI Technical Summary
Viscous dampers, in traditional connection methods, suffer from problems such as low damping efficiency, high construction difficulty, and high material consumption due to assembly gaps.
The damper is directly connected to the embedded part by welding. By setting a protruding section in the concrete component, mechanical clearance is eliminated, the force transmission path is changed, and the embedded part mainly bears the axial force, which reduces the size and volume of the embedded part. The embedded part is also prefabricated in the factory to simplify construction.
This achieves seamless connection, improves vibration damping, reduces project cost and construction difficulty, and enhances connection reliability and overall integrity.
Smart Images
Figure CN224931437U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building vibration reduction and seismic resistance, specifically to a connection structure of a viscous damper in a concrete structure. Background Technology
[0002] A viscous damper is a passive velocity-dependent energy-dissipating vibration reduction device based on the fluid viscous damping effect. It utilizes the reciprocating motion of an internal piston in a cylinder filled with viscous media such as silicone oil to force the fluid to generate a pressure difference through the damping orifice, thereby generating a damping force that follows the mathematical model F=CV^α (where C is the damping coefficient, V is the velocity, and α is the velocity exponent), converting the kinetic energy of structural vibration into heat energy dissipation.
[0003] Viscous dampers have a wide range of applications, including high-rise buildings, large-span spatial structures, bridges, industrial plants, and lifeline projects with special requirements for earthquake and wind resistance (such as hospitals and schools), as well as pipeline equipment in nuclear power, military, and other fields. They are suitable for both new structures and the seismic strengthening and repair of existing buildings. Their main function is to significantly increase the damping ratio of the structure, effectively dissipating the energy input from earthquake and wind loads, thereby greatly reducing the vibration response and displacement of the structure, protecting the safety of the main structure and internal equipment, while allowing for a reduction in the amount of traditional seismic-resistant components (such as shear walls), achieving a more economical design.
[0004] In traditional connection methods, viscous dampers are typically connected to the main structure (such as a frame beam) at both ends via lugs and pins. This connection method has some inherent drawbacks: First, there is a necessary assembly gap between the lugs and pins, which causes a period of "idle travel" in the initial stage of stress on the damper, preventing it from immediately dissipating energy and thus "consuming" some of the displacement that should be dissipated by the damper, seriously affecting the full realization of damping efficiency; second, the lugs and pins require high machining precision, making on-site installation difficult and increasing construction difficulty and labor costs; third, the connection between the lugs and the embedded parts is subject to complex forces, bearing not only axial forces but also large bending moments and shear forces, resulting in large embedded parts, increased steel consumption, and higher project costs. Utility Model Content
[0005] Purpose of the utility model: In order to solve the problems existing in the prior art, this utility model provides a connection structure for a viscous damper in a concrete structure. This structure has a clear force transmission path, no gaps, convenient construction, reliable connection, reduces the size of embedded parts, and can significantly reduce project costs and improve the vibration reduction effect.
[0006] Technical solution: To achieve the above objectives, the present invention can adopt the following technical solution: a connection structure of a viscous damper in a concrete structure, comprising: a concrete component part, an embedded part part, and a damper;
[0007] The concrete component includes an upper concrete component and a lower concrete component; the upper concrete component and the lower concrete component each include an upwardly protruding section component; the embedded part is embedded in the protruding section component of the concrete component and includes an end plate, an anchor plate, and an anchor bar welded to both; the two ends of the damper are welded to the embedded parts in the protruding section components of the upper concrete component and the lower concrete component, respectively.
[0008] Furthermore, the raised sections of the upper and lower concrete components are staggered to the left and right.
[0009] Furthermore, the damper is centrally located between the upper and lower concrete components, and the centerline of the embedded part coincides with the centerline of the damper.
[0010] Furthermore, the concrete component is constructed from concrete and its internal steel reinforcement skeleton; the steel reinforcement skeleton includes longitudinal reinforcement of the concrete concealed column, horizontal structural reinforcement of concrete, vertical structural reinforcement of concrete, stirrups of the concrete concealed column, and tie bars of concrete; the steel reinforcement skeleton and the embedded part are integrated into one piece before the concrete is poured.
[0011] Furthermore, one end of the longitudinal reinforcement of the concrete concealed column and the vertical structural reinforcement of the concrete extends out of the concrete surface for anchoring into the building structural frame beam, with the extension length not less than the seismic anchorage length.
[0012] Furthermore, the concrete concealed column stirrups are perpendicular to the concrete concealed column longitudinal bars and surround the concrete concealed column longitudinal bars.
[0013] Furthermore, the vertical structural steel bars in the concrete are bent in a "door" shape and are perpendicular to the horizontal structural steel bars in the concrete.
[0014] Furthermore, the concrete tie bars vertically connect the horizontal structural steel bars of the concrete and surround the vertical structural steel bars of the concrete.
[0015] Furthermore, the horizontal structural reinforcement of the concrete surrounds the vertical structural reinforcement of the concrete.
[0016] Furthermore, the embedded parts are prefabricated in the factory to effectively ensure quality, and are integrated with the steel reinforcement skeleton of the concrete component before concrete pouring by welding.
[0017] Beneficial Effects: This utility model has the following advantages: 1) Clearance-free and high-efficiency: By directly connecting the damper and the embedded end plate through welding, the mechanical clearance in the traditional ear plate and pin connection is completely eliminated, ensuring that the damper can fully exert its energy dissipation efficiency from the beginning of the stress, thus improving the vibration reduction effect. 2) Reasonable stress distribution and material saving: The unique raised section design changes the force transmission path, allowing the embedded part to mainly bear axial pressure or tension, avoiding complex bending moments and shear forces, thereby reducing the size and volume of the embedded part and saving steel consumption. 3) Convenient construction and time saving: It eliminates the complex processes of processing, installing, and drilling the ear plate and pin. The embedded part is prefabricated in the factory and can be welded and fixed to the steel reinforcement cage on site before pouring concrete, which greatly reduces the construction difficulty and labor costs and shortens the construction period. 4) Reliable structure and good integrity: The embedded part and the steel reinforcement cage in the concrete are integrated into a whole before pouring, and are reliably anchored to the main structure through anchor bars and protruding bars, with high connection rigidity and strength, ensuring the integrity and reliability of the node area. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of the connection of the viscous damper of this utility model in a concrete structure.
[0019] Figure 2 This is a schematic diagram of the connection structure of the viscous damper of this utility model in a concrete structure.
[0020] Figure 3 This is a top view schematic diagram of the connection structure of the viscous damper of this utility model in a concrete structure.
[0021] Figure 4 This is an exploded structural diagram of the connection structure of the viscous damper of this utility model in a concrete structure.
[0022] In the diagram: 1. Longitudinal reinforcement of the concrete concealed column; 2. Stirrups of the concrete concealed column; 3. Horizontal structural reinforcement of the concrete; 4. Vertical structural reinforcement of the concrete; 5. Concrete tie bar; 6. Concrete; 61. Upper concrete member; 62. Lower concrete member; 63. Protruding section member; 7. End plate; 8. Anchor plate; 9. Anchor bar; 10. Damper. Detailed Implementation
[0023] To make the technical features and effects of this utility model easier to understand, the following embodiments, in conjunction with the accompanying drawings, provide a more detailed explanation of the structure and operating principle of the connection structure of the viscous damper in concrete structures according to this utility model.
[0024] Example 1:
[0025] Please see Figure 1-4As shown, this utility model discloses a connection structure for a viscous damper in a concrete structure, which is installed between the frame beams of a building structure and includes a concrete component part, an embedded part part and a damper 10.
[0026] The concrete component includes an upper concrete component 61 and a lower concrete component 62. Each of the upper and lower concrete components 61 includes an upwardly protruding section 63, 350mm high, symmetrically arranged, with straight sections spaced 400nm apart. The upper concrete component 61 is cast together with the upper frame beam, while the lower concrete component 62 only has pre-reinforced steel bars. Concrete pouring will begin after the damper 10 is installed following the subsequent capping.
[0027] The embedded part is embedded in the raised section 63 of the concrete component and includes an end plate 7, an anchor plate 8, and an anchor bar 9 welded to both. The two ends of the damper 10 are welded to the embedded parts located in the raised section 63 of the upper concrete component 61 and the lower concrete component 62, respectively. The damper 10 should be centrally arranged in the upper concrete component 61 and the lower concrete component 62 and welded to the embedded parts at both ends, and the center line of the embedded part coincides with the center line of the damper 10.
[0028] The concrete component is constructed from concrete 6 and its internal steel reinforcement cage. The steel reinforcement cage includes longitudinal reinforcement 1, horizontal structural reinforcement 3, vertical structural reinforcement 4, stirrups 2, and tie bars 5. The steel reinforcement cage and the embedded parts are integrated before the concrete 6 is poured. The longitudinal reinforcement 1 and stirrups 2 form a concealed column, positioned at both ends of the upper concrete component 61 and the lower concrete component 62, respectively. The concealed columns are connected by horizontal structural reinforcement 3, vertical structural reinforcement 4, and tie bars 5 to form a shear wall. The embedded parts should be integrated before the concrete 6 is poured.
[0029] The longitudinal reinforcement 1 and vertical structural reinforcement 4 of the concrete concealed column extend one end out of the surface of the concrete 6 for anchoring into the structural frame beam, with an extension length not less than the seismic anchorage length. The stirrups 2 of the concrete concealed column are perpendicular to the longitudinal reinforcement 1 and surround it. The vertical structural reinforcement 4 is bent in a "door" shape and is perpendicular to the horizontal structural reinforcement 3. The concrete tie bars 5 vertically tie the horizontal structural reinforcement 3 and surround the vertical structural reinforcement 4. The horizontal structural reinforcement 3 surrounds the vertical structural reinforcement 4. The embedded parts are prefabricated in the factory to effectively ensure quality and are integrated with the steel reinforcement skeleton of the concrete component before concrete pouring by welding.
[0030] The installation method is as follows:
[0031] 1) Factory-prefabricated embedded parts: First, at the factory, one end of the anchor bar 9 is connected to the end plate 7, and the other end is connected to the anchor plate 8, and the connection is made by welding. This completes the embedded parts. After the embedded parts are transported to the site, they are placed in the raised sections of the concrete 6 in the upper concrete component 61 and the lower concrete component 62, respectively.
[0032] 2) Construction of the upper concrete component 61: The upper concrete component 61 should be constructed together with the upper frame beam. After the upper frame beam steel beam is tied, first tie the longitudinal reinforcement 1 of the concrete hidden columns on both sides, leaving a length not less than the seismic anchorage length, and anchor it into the upper frame beam in advance. Then tie the concrete hidden column stirrups 2, hoist the prefabricated embedded parts into the designed position of the raised section component 63, aligning its center line with the preset damper 10 center line. Then, temporarily fix it to the surrounding steel reinforcement skeleton by spot welding, place the embedded parts, and spot weld them in place. Then tie the concrete horizontal structural reinforcement 3, concrete vertical structural reinforcement 4, and concrete tie bars 5. The concrete vertical structural reinforcement 4 should leave a length not less than the seismic anchorage length and anchor it into the upper frame beam in advance. Finally, pour concrete 6 together with the upper frame beam to complete the installation of the upper concrete component.
[0033] 3) Pre-installation of lower concrete component 62: Reinforcing bars should be pre-installed. After the lower frame beam steel beams are tied, the longitudinal reinforcement 1 of the hidden concrete columns on both sides should be tied first, with a length not less than the seismic anchorage length reserved. This length should be anchored into the lower frame beams in advance. Next, the stirrups 2 of the hidden concrete columns should be tied. After completion, embedded parts should be placed and spot welded for fixation. Then, the horizontal structural reinforcement 3, vertical structural reinforcement 4, and tie bars 5 of the concrete should be tied. The vertical structural reinforcement 4 should have a length reserved, not less than the seismic anchorage length, and should be anchored into the lower frame beams in advance. Then, the lower frame beams can be poured with concrete. After the main structure is capped, concrete 6 should be poured to complete the installation of the lower concrete component 62. At this time, only the reinforcement is tied, and the concrete 6 of the lower component is not poured yet. The lower frame beams can be poured as usual.
[0034] 4) Installation of dampers: After the main structure is capped, dampers 10 will be installed. Dampers 10 will be welded to the end plates 7 of the embedded parts of the upper and lower concrete components respectively;
[0035] 5) Casting the lower components: Finally, cast the concrete 6 of the lower concrete component 62 to enclose the embedded parts, steel reinforcement cage and the end of the damper 10 to form a whole.
[0036] This invention, by incorporating a protruding section, replaces the pin and lug, saving on engineering costs and project time. Furthermore, the gap between a conventional pin and lug has a profound impact on the damper, absorbing the displacement that would otherwise belong to the damper and causing a deviation in the direction of force on the damper. This invention avoids the adverse effects of this gap, creating a gapless external structure. This design transforms the embedded part from resisting shear and bending to resisting only axial force, indirectly reducing the volume of the embedded part, providing direct force transmission, facilitating installation, and fully utilizing the damper's performance.
Claims
1. A connection structure for a viscous damper in a concrete structure, characterized in that... include: Concrete components, embedded parts, and dampers; The concrete component includes an upper concrete component and a lower concrete component; The upper concrete component and the lower concrete component each include an upwardly protruding section component; the embedded part is embedded in the protruding section component of the concrete component and includes an end plate, an anchor plate and an anchor bar welded to both; the two ends of the damper are welded to the embedded parts in the protruding section components of the upper concrete component and the lower concrete component respectively.
2. The connection structure of the viscous damper in a concrete structure according to claim 1, characterized in that: The raised sections of the upper and lower concrete components are staggered to the left and right.
3. The connection structure of the viscous damper in a concrete structure according to claim 1, characterized in that: The damper is centrally located between the upper and lower concrete components, and the centerline of the embedded part coincides with the centerline of the damper.
4. The connection structure of the viscous damper in a concrete structure according to claim 1, characterized in that: The concrete component is constructed from concrete and its internal steel reinforcement skeleton; the steel reinforcement skeleton includes longitudinal reinforcement of the concrete concealed column, horizontal structural reinforcement of concrete, vertical structural reinforcement of concrete, stirrups of the concrete concealed column, and tie bars of concrete; the steel reinforcement skeleton and the embedded part are integrated into one piece before the concrete is poured.
5. The connection structure of the viscous damper in a concrete structure according to claim 4, characterized in that: The longitudinal reinforcement bars of the concrete concealed column and the vertical structural reinforcement bars of the concrete extend out of the concrete surface at one end for anchoring into the building structural frame beam, with the extension length not less than the seismic anchorage length.
6. The connection structure of the viscous damper in a concrete structure according to claim 4, characterized in that: The concrete concealed column stirrups are perpendicular to the concrete concealed column longitudinal bars and surround the concrete concealed column longitudinal bars.
7. The connection structure of the viscous damper in a concrete structure according to claim 4, characterized in that: The vertical structural steel bars in the concrete are bent in a "door" shape and are perpendicular to the horizontal structural steel bars in the concrete.
8. The connection structure of the viscous damper in a concrete structure according to claim 4, characterized in that: The concrete tie bars vertically connect the horizontal structural steel bars of the concrete and surround the vertical structural steel bars of the concrete.
9. The connection structure of the viscous damper in a concrete structure according to claim 4, characterized in that: The horizontal structural reinforcement of the concrete surrounds the vertical structural reinforcement of the concrete.
10. The connection structure of the viscous damper in a concrete structure according to claim 1, characterized in that: The embedded parts are prefabricated in the factory and are integrated with the steel reinforcement skeleton of the concrete component before the concrete is poured by welding.