CN104912221B - A kind of corner damper and its installation method - Google Patents

Abstract

The invention discloses a corner damper and an installation method thereof, belonging to the technical field of structural vibration control, comprising: a regular octagonal moment transmission part, a transmission annular steel plate, a fixed annular steel plate, a damping material, a metal shell, a bearing and a fixed bracket; A regular octagonal bearing is arranged on the convex tooth on one side where the damper is installed, and a regular octagonal hole is arranged on the convex tooth on the other side; the convex tooth is connected with a regular octagonal pin shaft, and the damper is placed into the protruding pin shaft. When the protruding teeth on both sides rotate relative to each other, the protruding teeth can drive the regular octagonal moment transmission part to cause shear deformation of the damping material sandwiched between the driving ring steel plate and the fixed ring steel plate; the invention can be installed at the hinge point of the building It is used to control the vibration of the building structure. It requires less building space. After installation, it has little impact on the structure, normal use function and aesthetics of the building. It has the advantages of high energy consumption efficiency, flexible installation and layout, and convenient maintenance and replacement. .

Description

A corner damper and its installation method

The invention relates to the field of civil engineering and the field of structural vibration control, in particular to a damping material corner damper.

Background technique:

At present, in the field of structural vibration control, passive energy dissipation and vibration reduction technology has been relatively mature, and a variety of dampers with excellent performance have been widely used in practical projects. The vibration control effect has been tested by many earthquakes and is considered to be significant Effective.

In recent years, the hinged connection method has been widely used in new buildings. The hinged joints can release the bending moment of the joints, which has unique advantages in some structures. However, there is no special energy-dissipating and shock-absorbing device and method for the hinged connection, which also includes the use of hinged swing self-resetting components.

At present, a large number of buildings using hinged connections mostly use several traditional common dampers, such as friction dampers, viscous dampers, buckling-resistant braces, metal dampers, etc. The form of diagonal braces is installed between the floors of the building structure or at the diagonal joints of adjacent beams and columns; however, the two ends of the linear tension-compression damper require effective relative displacement, so that the damper can exert the best vibration control effect. For some buildings with high overall stiffness or a certain floor in the building, even under strong earthquakes, the relative displacement between the diagonal nodes of adjacent beams and columns is small, so in many cases, the traditional The linear tension-compression damper cannot fully exert its excellent energy dissipation performance; in addition, because the traditional support damper has high requirements for building space, and in many building construction situations, the limited building space cannot make the damper Normal work or use, even if it can be installed, may affect the normal use or appearance of the building.

Considering the characteristics of the hinged structure of the building structure, the hinge point often produces limited relative rotation between the connecting rods on both sides of the hinge shaft under the action of excitation, which has the characteristics of small rotation angle and fast rotation speed. A speed-dependent angular displacement damper is installed at the point to control the relative rotation between the hinged links; when the system is excited, the damper can generate a large damping force in a small rotational displacement in time, thereby Reduce the seismic response of the overall structure; in addition, the damper is small in size and requires less building space. It is installed at nodes with low space utilization, which has little impact on the building structure and affects the normal use of the building structure. Functionality and aesthetics are less affected.

The damping material can be a speed-dependent high-performance damping material with both viscosity and elasticity. When the damping material undergoes rapid shear deformation under dynamic action, the damping force generated by the damping material is proportional to the speed, and the kinetic energy transmitted to the material can be The internal energy converted into the viscoelastic material is dissipated, and the invention has many advantages such as high vibration reduction and energy consumption efficiency, flexible layout, and convenient installation.

Invention content:

The object of the present invention is to design a structure and installation method of a corner damper dedicated to hinged connection nodes, and to provide a damping and vibration reduction scheme for hinged connections in building structures.

The present invention includes the following contents:

A corner damper, comprising a bearing whose inner wall cross-section is a regular octagon in the hole of the convex tooth on one side of the hinge node; the bearing is just embedded in the hole of the convex tooth, and the outer wall of the bearing is fixed on the convex tooth inside the hole;

On the protruding teeth on the other side, holes with the same cross-section as the inner wall of the bearing are arranged; the protruding teeth on both sides are butted, and the protruding teeth on both sides are connected by a regular metal cylinder with a regular octagonal cross-section as a pin; The pin shaft passes through the bearing of the convex tooth on one side and the hole of the convex tooth on the other side at the same time, and protrudes symmetrically on both sides of the convex tooth;

Both sides of the protruding teeth are two parts symmetrical to each other, any part of which includes: regular octagonal torque transmission parts, transmission ring steel plates, fixed ring steel plates, damping materials, metal shells, bearings and fixing brackets;

Inside the metal shell, the transmission ring steel plate and the fixed ring steel plate are arranged at intervals, and the damping material is arranged between the drive ring steel plate and the fixed ring steel plate; the regular octagonal torque transmission part passes through the metal shell longitudinally through the center of the drive ring steel plate and the fixed ring steel plate .

The regular octagonal torque transmission part is a regular octagonal hollow column as a whole, the cross section is a regular octagonal ring, and there is a regular octagonal hole in the center that runs through the entire part longitudinally. The inner ring and the outer ring are both concentric and similar regular octagonal shapes;

Transmission ring-shaped steel plate, the cross-section of the inner ring is regular octagon, and the cross-section of the outer ring is circular, and the inner ring can just pass the outer ring of the regular octagonal torque transmission part;

The fixed ring-shaped steel plate is a ring-shaped metal plate, and the outer wall is welded on the metal shell;

Metal shell, both ends are provided with a certain thickness of circular steel plate, one end of the steel plate has a circular hole that can just install the bearing, and the other end of the steel plate has a hollow for the bearing to fit into the steel plate; the cross section of the middle section is a ring, and the center has a A circular hole in which the transmission ring-shaped steel plate and the fixed ring-shaped steel plate can be placed;

In the bearing, the cross section of the inner wall is a regular octagon.

The fixing bracket is longitudinally arranged on the side of the metal casing, and is connected with the corner damper and the ground or wall at the same time, so as to resist the torque acting on the corner damper.

The installation method of the corner damper is characterized in that it includes:

A bearing whose inner wall cross-section is a regular octagon is arranged in the hole of the convex tooth on one side of the hinge node; the bearing is just embedded in the hole of the convex tooth, and the outer wall of the bearing is fixed in the hole of the convex tooth;

On the protruding teeth on the other side, holes with the same cross-section as the inner wall of the bearing are arranged; the protruding teeth on both sides are butted, and the protruding teeth on both sides are connected by a regular metal cylinder with a regular octagonal cross-section as a pin; The pin shaft passes through the bearing of the convex tooth on one side and the hole of the convex tooth on the other side at the same time, and protrudes symmetrically on both sides of the convex tooth;

The opening ends of the damping material corner damper are respectively inserted into the protruding pin shafts. When the convex teeth on both sides rotate relative to each other, the convex teeth drive the pin shaft to rotate, and then drive the corner damper to work.

Further, the regular octagonal moment transmission component drives the transmission annular steel plate to rotate through the rotation of the installation pin; through the rotation of the transmission annular steel plate, the damping material between the transmission annular steel plate and the fixed annular steel plate is sheared and deformed.

The beneficial effects of the present invention are as follows:

The invention provides a corner damper and its installation method, which are specially designed for building hinge points to control the relative rotation of the connecting rods on both sides; the damping material used in the damper can be excited by the vibration load in the building structure, and the hinge point is limited The moment of rotation provides effective damping force and elastic force; a corner damper according to the invention can be installed at the hinge point with low building space utilization rate, which has little change or influence on the building structure, and has little impact on the normal function of the building. The use and aesthetics are less affected; the installation of the damper has lower requirements on the building space, and it can be installed at the hinge point of some narrow or complex structures where some linear tension-compression dampers are difficult to install; the corner damper of the present invention does not It is directly included as a part of the building structure, and can be installed after the main structure is completed during construction. Similarly, it can be directly replaced or repaired after damage; therefore, the corner damper of the present invention has high energy consumption efficiency , flexible installation and layout, convenient maintenance and replacement, etc.

Description of drawings:

Fig. 1 is the structural representation of a kind of damping material corner damper of the present invention;

Fig. 2 is the A-A sectional view of a kind of corner damper of the present invention;

Fig. 3 is a B-B sectional view of a corner damper according to the present invention;

Fig. 4 is a C-C sectional view of a corner damper according to the present invention;

Fig. 5 is a D-D sectional view of a corner damper according to the present invention;

Fig. 6 is an E-E sectional view of a corner damper according to the present invention;

Fig. 7 is a schematic diagram of a hinge point of the present invention;

Fig. 8 is a front view and a left view of a regular octagonal metal pin;

Fig. 9 is a schematic diagram of a corner damper installed in the M direction of Fig. 7 according to the present invention;

Fig. 10 is an N-direction view of a corner damper in Fig. 9 according to the present invention

Explanation of reference signs:

1—regular octagonal moment transmission part; 11—gap; 2—transmission annular steel plate; 21—first weld;

3—fixed annular steel plate; 31—the second weld; 4—damping material; 5—metal shell;

6—fixed bracket; 7—bearing; 8—three smooth convex teeth; 81—convex tooth bearing;

82—convex tooth regular octagonal hole; 9—two smooth convex teeth; 91—convex tooth regular octagonal hole;

92—rectangular connecting plate; 93—stiffening strip; 10 regular octagon pin;

detailed description:

When the building has high vibration control requirements, especially the structure with hinged joints, the corner damper of the present invention can be installed, that is, dampers are arranged on one or both sides of the hinged joints to control the hinged joints. The limited relative rotation of the convex teeth on both sides of the point provides a large damping force at the moment of rotation to improve the seismic level of the building structure. A corner damper according to the present invention can be used for vibration control or seismic reinforcement of new buildings or existing buildings, as shown in Figure 1-Figure 6, wherein Figure 2 is the A-A sectional view of Figure 1, and Figure 3 is Figure 1 Figure 4 is the C-C sectional view of Figure 1, Figure 5 is the D-D sectional view of Figure 1, and Figure 6 is the E-E sectional view of Figure 1; the damper is cylindrical as a whole, including: regular octagonal torque transmission Component 1, gap 11, transmission annular steel plate 2, first weld seam 21, fixed annular steel plate 3, second weld seam 31, damping material 4, metal shell 5, fixed bracket 6 and bearing 7. in,

The regular octagonal torque transmission part 1 is a regular octagonal hollow column as a whole, the cross section is a regular octagonal ring, and there is a regular octagonal hole in the center that runs through the entire part longitudinally. The inner ring and the outer ring are both concentric and similar regular octagonal , there is a certain thickness between the inner ring and the outer ring; the regular octagonal torque transmission part 1 runs through the entire damper in the longitudinal direction, and can be completely inserted into the bearings 7 at both ends of the damper.

Transmission annular steel plate 2, the center is the regular octagonal hole that is congruent with regular octagonal torque transmission part 1 cross-section, can make regular octagonal moment transmission part 1 just can pass through center hole; Transmission annular steel plate 2 can adopt welding (section A welding seam 21) etc. are fixed on the regular octagonal torque transmission part 1, leave a certain gap between the steel plate and the metal shell 5, and can rotate along with the rotation of the regular octagonal torque transmission part 1.

The fixed annular steel plate 3 has a ring-shaped cross-section and a circular hole in the center. The radius of the circular hole is slightly larger than the radius of the circumcircle of the cross-section of the regular octagonal torque transmission part 1, that is, there is a certain gap 11 therebetween. , so that the regular octagonal torque transmission part 1 can rotate freely relative to the fixed annular steel plate 3; the fixed annular steel plate 3 can be fixed on the metal shell 5 by means of welding (second welding seam 31), and arranged alternately with the transmission annular steel plate 2. There is a certain gap between the two.

Preferably, high-strength steel or other materials can be used, so that the regular octagonal torque transmission component 1 has better mechanical properties such as shear resistance and torsion resistance.

The damping material 4 should be a speed-dependent high-performance damping material with both viscous and elastic properties;

The metal shell 5 is a cylinder made of metal as a whole, with a hollow in the center, so that the regular octagonal torque transmission part 1, the transmission ring steel plate 2, the fixed ring steel plate 3 and the damping material 4 can be placed in it; the two ends of the metal shell 5 are round Shaped steel plate, wherein, there is a regular octagonal hole in the center of the steel plate at one end pointed by P, so that the bearing 7 can be placed just right; the other end of the steel plate has a part of the cavity inside the damper, and the outer side is closed; The number of arrangements for 4 is appropriately increased or decreased;

The fixed bracket 6 is arranged on the lateral cylindrical surface of the metal shell 5, and can be arranged in multiple groups in the longitudinal direction; the fixed bracket 6 can be connected to fixed ends such as the ground or the wall by means of bolts, and can be welded to the metal shell 5 Connection: The structural form of the fixed bracket 6 can be changed accordingly with the actual situation, as long as the purpose of fixing the damper can be achieved.

The bearing 7 can be just inserted into the holes or cavities of the steel plates on both sides of the metal shell 5; Type bearings and other bearings that can withstand large axial and lateral loads.

A corner damper described in the present invention, taking a common hinged connection assembly as an example, illustrates its installation and use method, as shown in Figure 7 and Figure 8, which is a schematic diagram of a certain hinged connection assembly, including three smooth convex teeth 8, convex tooth bearing 81, convex tooth regular octagonal hole 82, two smooth convex teeth 9, convex tooth regular octagonal hole 91, rectangular connecting plate 92, stiffening bar 93 and regular octagonal pin 10.

The method flow for installing a corner damper as shown in Figure 1, as shown in Figures 9 and 10, wherein Figure 9 is a view in the M direction of Figure 7, and Figure 10 is a view in the N direction of Figure 9, including the following steps:

Step S1: Arranging bearings with a regular octagonal inner wall cross-section in the holes of the protruding teeth on one side of the hinged connection, and arranging holes with a regular octagonal cross-section in the protruding teeth on the other side.

Convex bearings 81 are arranged on the three smooth and smooth convex teeth 8 , and convex teeth regular octagonal holes 91 are arranged on the two smooth and smooth convex teeth 9 .

Step S2: Pass the regular octagonal pin through the protruding teeth on both sides of the hinge assembly at the same time, and leave overhanging sections of equal length on both sides of the protruding teeth.

The presence of the convex tooth bearing 81 and the regular octagonal hole 91 enables the regular octagonal pin 10 to rotate relative to the three smooth convex teeth 8 with the rotation of the two smooth convex teeth 9; the regular octagonal pin 10 The overhanging section should at least leave a length not less than the longitudinal length of the damper, so that the regular octagonal pin 10 can be fully inserted and overlapped on the two end bearings 7 inside the damper.

Step S3: Put the two corner dampers into the two side extensions of the pin shaft respectively.

Insert the regular octagonal torque transmission part 1 into the outstretched regular octagonal pin shaft 10, so that the pin shaft is completely lapped on the bearings 7 at both ends of the damper; as shown in Figure 2 and Figure 7, the regular octagonal torque transmission part 1 The regular octagonal holes 91 of the protruding teeth should be consistent in the x and y directions at the same time, so that the pin shaft 10 can be smoothly inserted into the damper.

Step S4: Fix the damper so that it has an equal degree of freedom with the convex tooth on which the bearing is installed.

The fixing bracket 6 is connected to the wall/ground by means of bolts; the metal shell 5 can also be welded to the three smooth protruding teeth 8 .

Fig. 9 and Fig. 10 show a structural diagram of a damping material corner damper installed at a hinge point. It can be seen that when the vibration load is transmitted to the hinge point, the two smooth convex teeth 9 and the three smooth convex teeth The tooth 8 rotates relative to each other, and the two smooth convex teeth 9 drive the pin shaft 10, and the pin shaft 10 drives the regular octagonal torque transmission part 1 to rotate, thereby making the transmission ring plate 2 and the fixed ring plate 3 rotate relatively, even if the damping The material 4 is sheared and deformed, thereby achieving the purpose of dissipating energy and controlling the relative rotation of the two smooth convex teeth 9 and the three smooth convex teeth 8 .

The damping material corner damper of the present invention can be installed at multiple hinge points of the same building. Since the damper is small in size and only installed at the nodes of the building, the damper is less constrained by the building space. It has little impact on the normal use function and architectural appearance of the building structure; even in some special building structures or narrow spaces, the traditional support type damper cannot be installed or the effect is poor after installation, the damper of the present invention can As an alternative to traditional braced dampers.

In actual engineering, a damping material corner damper according to the present invention can be rationally designed according to the size of the convex teeth on both sides of the hinge point and the damping requirements of the building structure. 3. The size or quantity of the damping material 4, the metal casing 5, the fixing bracket 6 and the bearing 7.

Similarly, after changing the size or quantity of certain components, the force characteristics of the damper may change, and it is necessary to redesign the material properties of some components, and reasonably change the material type and amount of some components.

The installation method of the damper of the present invention enables the damper to be installed uniformly after the main body of the building structure is installed, and multiple groups of dampers can be installed at the same time, and the construction efficiency is high; similarly, if the damper occurs Damaged, the damper can be easily repaired or replaced, which is also consistent with the current mainstream seismic design ideas.

Of course, the damping material corner damper and its installation method described in the present invention can also be used in combination with other vibration control methods to further improve the seismic performance of the building structure.

Since the hinged structure of the building also has various structural forms, a kind of damping material corner damper in the present invention can also make some structural changes according to different types of hinged structures, if these changes or deformations are still within the rights of the present invention If required, the present invention automatically includes those changes or modifications.

Claims (3)

1. A corner damper is characterized by comprising a bearing with an inner wall with a regular octagonal cross section, wherein the bearing is arranged in a hole of a convex tooth on one side of a hinge joint; the bearing is just embedded into the hole of the convex tooth, and the outer wall of the bearing is fixed in the hole of the convex tooth;

holes which are identical to the cross section of the inner wall of the bearing are arranged on the convex teeth on the other side; butting the convex teeth on the two sides, and connecting the convex teeth on the two sides by using a regular metal cylinder with a regular octagonal cross section as a pin shaft; the pin shaft simultaneously penetrates through the bearing of the convex tooth on one side and the hole of the convex tooth on the other side, and symmetrically extends out of two sides of the convex tooth;

two sides of the convex teeth are two symmetrical parts, wherein any one part comprises: the device comprises a regular octagonal torque transmission part, a transmission annular steel plate, a fixed annular steel plate, a damping material, a metal shell, a bearing and a fixed support;

the transmission annular steel plates and the fixed annular steel plates are arranged at intervals in the metal shell, and the damping material is arranged between the transmission annular steel plates and the fixed annular steel plates; the regular octagonal torque transmission part longitudinally penetrates through the metal shell through the centers of the transmission annular steel plate and the fixed annular steel plate;

the regular octagonal torque transmission component is a regular octagonal hollow column as a whole, the cross section of the regular octagonal hollow column is in a regular octagonal ring shape, a regular octagonal hole longitudinally penetrating through the whole component is formed in the center of the regular octagonal hollow column, and the inner ring and the outer ring are concentric and similar regular octagons;

the cross section of the inner ring of the transmission annular steel plate is regular octagon, the cross section of the outer ring of the transmission annular steel plate is circular, and the inner ring of the transmission annular steel plate can just enable the outer ring of the regular octagon torque transmission component to penetrate through;

the fixed annular steel plate is an annular metal plate, and the outer wall of the fixed annular steel plate is welded on the metal shell;

the two ends of the metal shell are provided with circular steel plates with certain thicknesses, one end of each steel plate is provided with a circular hole which can be used for installing the bearing, and the other end of each steel plate is provided with a cavity which enables the bearing to be embedded into the steel plate; the cross section of the middle section is a circular ring, and the center of the middle section is provided with a circular hole which can be used for placing the transmission annular steel plate and the fixed annular steel plate;

the cross section of the inner wall of the bearing is a regular octagon;

the fixing bracket is longitudinally arranged on the side surface of the metal shell and is connected with the corner damper and the ground or the wall body so as to resist the torque acting on the corner damper.

2. A method of mounting a corner damper according to claim 1, comprising:

a bearing with an octagonal inner wall cross section is arranged in a hole of the convex tooth on one side of the hinged joint; the bearing is just embedded into the hole of the convex tooth, and the outer wall of the bearing is fixed in the hole of the convex tooth;

holes which are identical to the cross section of the inner wall of the bearing are arranged on the convex teeth on the other side; butting the convex teeth on the two sides, and connecting the convex teeth on the two sides by using a regular metal cylinder with a regular octagonal cross section as a pin shaft; the pin shaft simultaneously penetrates through the bearing of the convex tooth on one side and the hole of the convex tooth on the other side, and symmetrically extends out of two sides of the convex tooth;

the open ends of the damping material corner dampers are respectively inserted into the pin shafts which extend outwards, and when the convex teeth on the two sides rotate relatively, the convex teeth drive the pin shafts to rotate, so that the corner dampers are driven to work.

3. The method of claim 2,

the regular octagonal torque transmission part drives the transmission annular steel plate to rotate through the rotation of the mounting pin shaft; the damping material between the transmission annular steel plate and the fixed annular steel plate is subjected to shear deformation through the rotation of the transmission annular steel plate.