Friction viscoelastic composite damping wall

Abstract

The utility model provides a friction viscoelastic composite damping wall. The friction viscoelastic composite damping wall comprises an outer wall steel sleeve, an internal sliding steel plate, stiffening ribs, capping angle steel, friction dampers, viscous damping materials, viscoelastic damping materials and angle steel supports. The outer wall steel sleeve is of a cavity structure formed by welding a front web plate, a rear web plate, a left side plate, a right side plate and a bottom plate, the inner sliding steel plate is a single steel plate with the surface subjected to sand blasting treatment, and the stiffening ribs, the sliding steel plate and the top plate are connected in a double-face welding mode. High-strength bolts penetrate through preset bolt holes to connect the top sealing angle steel, the filled viscoelastic damping material and the internal sliding steel plate, the friction dampers are arranged along the wall height at intervals of 1250 mm, the high-strength bolts penetrate through the friction dampers to apply pre-pressure to the friction dampers, the internal sliding steel plate is placed in the center of a cavity of the outer wall steel sleeve, and the cavity is filled with the viscous damping material. Various energy dissipation mechanisms are used in a combined mode, the energy dissipation and shock absorption capacity is high, the structure is simple, production and installation are convenient, and structural earthquake response can be effectively controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of energy dissipation and shock absorption of engineering structures, in particular to a friction viscoelastic composite damping wall. Background Art

[0002] To meet the needs of commercial offices and residences, most of the buildings currently being built are high-rise structures. Under the action of earthquakes, high-rise building structures will experience large internal forces and horizontal lateral displacements. To ensure the overall stability and safety of the structure, the lateral displacement cannot exceed the allowable range of overall horizontal displacement and inter-layer horizontal displacement specified in the code. In order to reduce the structural earthquake internal force response and control the lateral displacement, energy dissipation and shock absorption components are usually installed at the key seismic locations of the structure. When the structure is subjected to an earthquake, a large relative displacement will occur between the structural components, and the energy dissipation and shock absorption components will then produce a large deformation, thereby consuming the seismic energy to provide damping force to the structure, reducing the structural earthquake response internal forces, and ensuring that the structure will not be severely damaged under strong earthquakes, and the horizontal lateral displacement can meet the code requirements.

[0003] Common energy dissipation and shock absorption components include viscous dampers, friction dampers, metal dampers, buckling restrained braces, etc. The damping force provided by these dampers is limited and may not be applicable to any type of structure. A single type of damper cannot simultaneously control the displacement response and acceleration response of the structure. Damping walls have the advantages of wide application range, no impact on the use function of the building, strong energy dissipation and vibration reduction capabilities, convenient production and installation, and multiple damping mechanisms that can be used in combination. Replacing the non-load-bearing walls of the building structure with damping walls does not change the force system of the structure, but can also play a role in energy dissipation and vibration reduction, effectively controlling the lateral displacement of the structure under earthquake action. Viscous damping walls are a common form of damping walls. Due to the large relative deformation of structural components under earthquake action, the inner steel plate of the damping wall and the viscous damping material undergo relative slip, and shear deformation occurs inside the viscous damping material to provide damping force for the structure, thereby dissipating the seismic energy input to the structure and achieving the purpose of controlling the seismic response of the structure. Generally speaking, the energy dissipation capacity of the viscous damping wall is greatly affected by factors such as temperature and ground motion frequency. The viscous damping material does not work in a pure shear state and cannot provide sufficient damping force, which affects the vibration reduction effect.

[0004] The combined use of multiple energy dissipation mechanisms such as friction dampers, viscoelastic dampers and viscous dampers can give full play to their advantages, and at the same time control the displacement response and acceleration response of the structure, so that the damping wall reaches the maximum energy dissipation level. The utility model provides a friction viscoelastic composite damping wall, in which multiple damping mechanisms work together under earthquake action, and can provide sufficient damping force to control the seismic response of the structure within the allowable range, with strong energy dissipation capacity, simple structure, convenient production and installation, low cost, and wide applicability. Summary of the invention

[0005] In order to achieve the above technical objectives, the utility model provides a friction viscoelastic composite damping wall, including a damping wall bottom plate connected to the lower components of the building structure, a damping wall top plate connected to the upper components of the building structure, an exterior wall steel sleeve connected to the bottom plate, an internal sliding steel plate connected to the top plate, stiffening ribs on the top of the sliding steel plate, active friction plates installed on both sides of the sliding steel plates, a driven friction plate connected to the exterior wall side plates by high-strength bolts, a capping angle steel on the top of the exterior wall steel sleeve, an angle steel support for supporting the capping angle steel, a viscoelastic damping material filled between the capping angle steel and the sliding steel plate, and a viscous damping material inside the exterior wall steel sleeve.

[0006] Furthermore, the bottom of the exterior wall steel sleeve is welded to the damping wall bottom plate, the front and rear webs and left and right side plates of the exterior wall steel sleeve are welded to each other, and the exterior wall steel sleeve is a cavity structure and should have good sealing and integrity.

[0007] Furthermore, the angle steel support is welded to the upper part of the web of the exterior wall steel sleeve, the capping angle steel is welded to the top of the exterior wall steel sleeve, and bolt holes are opened on the vertical flanges of the angle steel.

[0008] Furthermore, the stiffening ribs on the top of the sliding steel plate, the sliding steel plate and the damping wall top plate are connected by double-sided welding, the sliding steel plate is surface-sandblasted, and strip-shaped long holes are opened on the sliding steel plate at positions corresponding to the bolt holes of the vertical flanges of the angle steel.

[0009] Furthermore, the gap between the capping angle steel and the sliding steel plate is filled with viscoelastic damping material, and the viscoelastic damping material is tightly connected to the surface of the capping angle steel by using a rubber and steel plate bonding process. Bolt holes are opened at the corresponding positions of the viscoelastic damping material, the capping angle steel, and the sliding steel plate, and high-strength bolts penetrate the capping angle steel, the viscoelastic damping material, and the sliding steel plate to connect them.

[0010] Furthermore, the active friction plate is sandblasted on its surface and arranged on the sliding steel plate at intervals of 1250 mm. The active friction plate is welded to the sliding steel plate along the wall length direction, and the active friction plate is embedded in the driven friction plate.

[0011] Furthermore, the driven friction plate is arranged at a corresponding position of the active friction plate at an interval of 1250 mm, the driven friction plate is connected to the bolt holes reserved in the side plate of the outer wall steel sleeve through high-strength bolts, and the viscoelastic damping material on the driven friction plate is bonded to the driven friction plate through a rubber and steel plate bonding process.

[0012] Furthermore, long strip bolt holes are reserved in the active friction plate, the driven friction plate and the viscoelastic damping material, and the long strip holes limit the relative movement of the active and driven friction plates. High-strength bolts penetrate the active friction plate, the driven friction plate and the viscoelastic damping material to connect them. The high-strength bolts apply pre-pressure to the friction damper along the normal direction, thereby adjusting and controlling the generated damping force.

[0013] Furthermore, a filling hole is opened on the upper part of the web of the outer wall steel sleeve, and liquid viscous damping material is injected into the cavity through the filling hole. After the filling is completed, the filling hole is sealed.

[0014] This friction viscoelastic composite damping wall has the advantages of friction damper, viscoelastic damper and viscous damper. It can exert the energy dissipation capacity of various dampers under earthquake action, make them work together, and effectively control the displacement response and acceleration response of the building structure. Under the action of earthquake force, the structure undergoes relative deformation, thereby driving the internal sliding steel plate and the outer wall steel sleeve to undergo relative displacement along the length of the wall. The sliding steel plate shears the liquid viscous damping material to generate damping force. The lateral displacement of the structure drives the active friction plate and the driven friction plate to slide relative to each other, generating friction damping. The viscoelastic damping material between the sliding steel plate and the top angle steel can also provide damping force for the structure when relative movement occurs. The three energy dissipation mechanisms work simultaneously to consume the seismic input energy, improve the energy dissipation capacity, reduce the seismic response of the structure, and the lateral displacement of the structure can meet the requirements of the specification, ensuring the safety of the structure when subjected to a large earthquake. This friction viscoelastic composite damping wall has a simple structure, is easy to produce and manufacture, and is easy to transport and install. Its specifications and dimensions can be adjusted according to the size of the damping wall required to be set in the floor and the structural layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a friction viscoelastic composite damping wall of the utility model.

[0016] Figure 2 This is a side view of a friction viscoelastic composite damping wall of the utility model.

[0017] Figure 3 This utility model Figure 2 AA section of a friction viscoelastic composite damping wall

[0018] Figure 4 This utility model Figure 1 BB section of a friction viscoelastic composite damping wall

[0019] Figure 5 This is a front view of the sliding steel plate inside the friction viscoelastic composite damping wall of the utility model. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding and practical application of engineers and technicians in the same field, the structural features and implementation methods of the utility model are further described in detail below.

[0021] As shown in the figure, the utility model comprises: an outer wall steel sleeve (1), an inner sliding steel plate (2), a stiffening rib (3), a capping angle steel (4), a friction damper (5), a viscous damping material (6), a viscoelastic damping material (7), and an angle steel support (8).

[0022] The specific implementation steps are as follows:

[0023] 1. The bottom plate of the damping wall steel sleeve is 3050 mm long, 350 mm wide and 10 mm thick. When the damping wall is installed, the bottom plate is anchored to the lower frame beam with high-strength bolts. The front and rear webs and left and right side plates of the exterior wall steel sleeve (1) are welded to the bottom plate. The web size is 3000 mm × 3000 mm × 10 mm, and the side plate size is 300 mm × 3000 mm × 10 mm. First, weld the left and right side plates to the bottom plate. After the friction damper is installed, weld the web plate to the side plates and bottom plate to form an integral structure.

[0024] 2. Use high-strength bolts to connect the damping wall top plate to the upper frame beam, and weld the internal sliding steel plate (2) to the top plate along the center line of the damping wall. Stiffening ribs (3) are arranged on both sides of the connection between the sliding steel plate and the top plate, with a spacing of 1000 mm. Double-sided welding is used to connect the sliding steel plate and the top plate. The stiffening ribs are arranged to ensure that the sliding steel plate does not suffer from out-of-plane instability when the damping wall undergoes relative displacement. Long strip bolt holes are opened at the position where the high-strength bolts are installed on the upper part of the sliding steel plate, and the bolts are arranged at intervals of 1000 mm.

[0025] 3. Friction dampers (5) are arranged at intervals of 1250mm along the height direction of the wall, and are arranged symmetrically on the front and rear sides of the wall. The active friction plate is connected to the internal sliding steel plate by double-sided welding. The active friction plate is provided with strip-shaped long bolt holes for installing high-strength bolts, and the bolt hole spacing is 2000mm. The driven friction plate is connected to the outer wall side plate at the corresponding position of the active friction plate by high-strength bolts, and bolt holes are reserved on the outer wall side plate. The viscoelastic damping material is tightly connected to the driven friction plate by a rubber and steel plate bonding process, and the active friction plate is embedded in the middle of the driven friction plate.

[0026] 4. Bolt holes are opened at positions corresponding to the long strip holes of the driven friction plate and the viscoelastic damping material and the active friction plate, and high-strength bolts are used to penetrate the active friction plate, the driven friction plate and the viscoelastic damping material to connect them. The high-strength bolts limit the relative movement of the active and driven friction plates when the structure moves sideways, and pre-pressure is applied to the friction damper in the normal direction through the high-strength bolts, thereby adjusting and controlling the generated damping force.

[0027] 5. Weld the angle steel support (8) to the upper part of the web of the exterior wall steel sleeve to provide support for the capping angle steel, with a spacing of 1000mm. Install the webs on the front and rear sides of the exterior wall steel sleeve, and weld the webs to the damping wall bottom plate and the left and right side plates. The welding parts should be sealed.

[0028] 6. The capping angle steel is welded to the top of the outer wall steel sleeve, and the gap between the capping angle steel and the sliding steel plate is filled with viscoelastic damping material (7). The viscoelastic damping material is tightly connected to the surface of the capping angle steel by using a rubber and steel plate bonding process. Bolt holes are opened in the vertical flange of the capping angle steel and the viscoelastic damping material at positions corresponding to the strip-shaped long holes of the internal sliding steel plate. High-strength bolts are used to penetrate the bolt holes and the strip-shaped long bolt holes reserved on the sliding steel plate to connect the capping angle steel, the viscoelastic damping material and the internal sliding steel plate. The high-strength bolts limit the relative movement of the sliding steel plate when the structure moves sideways. The high-strength bolts are used to apply pre-pressure to the capping angle steel, the viscoelastic damping material and the sliding steel plate in the normal direction, thereby adjusting and controlling the damping force generated by the viscoelastic damping device.

[0029] 7. A filling hole is opened on the upper part of the web of the outer wall steel sleeve, and liquid viscous damping material (6) is injected into the cavity through the filling hole. After the filling is completed, the filling hole is sealed.

[0030] The friction viscoelastic composite damping wall combines the advantages of friction dampers, viscoelastic dampers and viscous dampers, combines multiple energy dissipation mechanisms to work together, enhances energy dissipation capacity, and reduces displacement response and acceleration response of building structures. The structure undergoes significant relative deformation under the action of earthquake force, thereby driving the internal sliding steel plate and the outer wall steel sleeve to undergo relative displacement along the length of the wall, the liquid viscous damping material undergoes shear deformation to generate damping force, the structural lateral displacement drives the active friction plate and the driven friction plate to slide relative to each other, thereby generating friction damping, and the viscoelastic damping material between the sliding steel plate and the top angle steel can also provide damping force for the structure when relative movement occurs. The three energy dissipation mechanisms simultaneously exert their effectiveness to dissipate earthquake input energy, improve energy dissipation capacity, reduce the seismic dynamic response of the structure, control the structural lateral displacement within the range allowed by the specification, and ensure the safety of the structure when subjected to a large earthquake. This friction viscoelastic composite damping wall has a simple structure, is easy to manufacture, is easy to transport and install, and is simple and easy to maintain. Its specifications and dimensions can be adjusted according to the size of the damping wall required to be set in the floor and the structural layout.

[0031] The above technical measures are only preferred implementation methods of the present utility model. It is pointed out here that the improvements and changes made thereto on the basis of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A friction viscoelastic composite damping wall, characterized by: The invention comprises an outer wall steel sleeve (1), an inner sliding steel plate (2), a stiffening rib (3), a capping angle steel (4), a friction damper (5), a viscous damping material (6), a viscoelastic damping material (7), and an angle steel support (8). The outer wall steel sleeve (1) is a hollow structure formed by welding two front and rear webs, two left and right side plates, and a bottom plate. The inner sliding steel plate (2) is a single steel plate with a sandblasted surface, the upper part of which is welded to the top plate. The stiffening rib (3) is welded to both the sliding steel plate and the top plate. The sliding steel plate is placed in the center of the outer wall steel sleeve cavity, and the cavity is filled with the viscous damping material (6).

2. The friction-viscoelastic composite damping wall according to claim 1 is characterized in that: The capping angle steel (4) is welded to the top of the outer wall steel sleeve, and the angle steel support (8) is welded to the upper part of the web of the outer wall steel sleeve to provide support for the capping angle steel. The gap between the capping angle steel and the sliding steel plate is filled with a viscoelastic damping material (7). The viscoelastic damping material is tightly connected to the surface of the capping angle steel by using a rubber and steel plate bonding process. Bolt holes are provided in the capping angle steel and the viscoelastic damping material. Long strip holes are provided at corresponding positions of the sliding steel plate. High-strength bolts penetrate the capping angle steel, the viscoelastic damping material and the sliding steel plate to connect them.

3. The friction viscoelastic composite damping wall according to claim 1 is characterized by: The friction dampers (5) are symmetrically arranged at intervals of 1250 mm along the wall on both sides of the sliding steel plate. The active friction plate is welded to the sliding steel plate and the surface is sandblasted. The driven friction plate is connected to the bolt holes of the outer wall steel sleeve at the corresponding position by high-strength bolts. The viscoelastic damping material is tightly connected to the driven friction plate by a rubber and steel plate bonding process.

4. The friction-viscoelastic composite damping wall according to claim 1 is characterized by: Long strip bolt holes are reserved for the active friction plate, the driven friction plate and the viscoelastic damping material. The long strip holes limit the relative movement of the active and driven friction plates. High-strength bolts penetrate the active friction plate, the driven friction plate and the viscoelastic damping material to connect them. The high-strength bolts apply pre-pressure to the friction damper along the normal direction, thereby adjusting and controlling the damping force generated by it.

5. The friction-viscoelastic composite damping wall according to claim 1 is characterized by: A filling hole is opened on the upper part of the web of the outer wall steel sleeve, and liquid viscous damping material is injected into the cavity through the filling hole. After the filling is completed, the filling hole is sealed.

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