A comb-shaped steel damper

Abstract

The present invention relates to a comb-tooth steel damper, comprising a steel damping unit, the longitudinal section of which is a bilaterally symmetrical structure and a closed-loop structure; a plurality of first strip holes are respectively provided at the longitudinal ends of the steel damping unit, the first strip holes are arranged along the length direction of the steel damping unit, and all the first strip holes at each end are distributed at intervals along the transverse direction of the steel damping unit. By arranging the first strip holes so that the two ends form a comb-tooth structure, the steel damping unit can not only realize longitudinal energy dissipation along its bending direction, but also can twist and deform and generate displacement along the transverse direction along the first strip holes between the comb teeth, effectively dissipating seismic energy, the comb-tooth steel damper can independently dissipate seismic energy in the transverse and longitudinal directions without interfering with each other, the mechanical properties are slightly different, the structure is compact, and only one group of comb-tooth steel dampers is required to realize longitudinal and transverse energy dissipation, which greatly saves installation space, reduces engineering cost, and can save more than 30% of comprehensive cost.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge metal dampers, and particularly to a comb-shaped steel damper. Background Art

[0002] China is a country with frequent earthquakes and has many seismic belts. Therefore, whether it is a railway bridge or a highway bridge, seismic resistance is one of the important factors to be considered in bridge design. The seismic isolation and energy dissipation design method is an effective method for bridge seismic design. Through this method, it is usually possible to effectively improve the design seismic level of the bridge, reduce the project cost, and reduce the cost of post-earthquake maintenance.

[0003] Adopting seismic isolation design is to make the entire bridge system "softer", increase the vibration period of the bridge, and reduce the energy input from ground motion to the bridge system. The most typical device for seismic isolation design is the friction pendulum bearing, which uses the pendulum principle to extend the natural vibration period of the structure. Adopting seismic energy dissipation design is to dissipate seismic energy and reduce the response of the overall bridge system to acceleration and displacement. The most typical device for seismic energy dissipation design is the damper. Dampers include steel dampers, viscous dampers, viscoelastic dampers, eddy current dampers, etc.

[0004] The common method in high-intensity earthquake areas is to use seismic isolation devices and damping devices in combination, that is, to extend the structural period and dissipate seismic energy. Although the existing arc-shaped steel dampers can increase the deformation displacement, they can only dissipate energy along the bending direction of the arc-shaped steel, and the energy dissipation direction is single, that is, one arc-shaped steel damper can only have good deformation ability in one direction of the transverse bridge direction or the longitudinal bridge direction. Therefore, if an ordinary arc-shaped steel damper is to achieve energy dissipation in two directions, usually a set of steel dampers needs to be set in each of the longitudinal bridge direction and the transverse bridge direction, such as Figures 21 - 22 , which requires a large installation space and high material costs. Summary of the Invention

[0005] The purpose of the present invention is to provide a comb-shaped steel damper for the problems of the existing arc-shaped steel damper with a single energy dissipation direction, large installation space required, and high material costs when achieving energy dissipation in both the longitudinal bridge direction and the transverse bridge direction.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A comb-shaped steel damper includes a steel damper unit, and the longitudinal section of the steel damper unit is a left-right symmetric structure and a closed-loop structure; a plurality of first strip-shaped holes are respectively provided at both longitudinal ends of the steel damper unit, the first strip-shaped holes are arranged along the length direction of the steel damper unit, and all the first strip-shaped holes at each end are spaced apart transversely along the steel damper unit.

[0008] The comb-shaped steel damper described in this solution has relatively small planar dimensions, can achieve good effects in vertical tensile strength and longitudinal deformation, and dissipates seismic energy through the plastic deformation of the metal, thereby achieving the purpose of shock absorption. Moreover, the metal material is less affected by the environment, has stable performance, good durability, and low maintenance costs. By providing a number of first strip-shaped holes at the longitudinal ends of the steel damper unit respectively, the first strip-shaped holes are arranged along the length direction of the steel damper unit, and all the first strip-shaped holes at each end are spaced transversely along the steel damper unit. A comb-shaped structure is formed at both ends. The steel damper unit with this structure can not only dissipate energy longitudinally along its bending direction, but also twist and deform along the transverse direction along the first strip-shaped holes between the combs and generate displacement, effectively dissipating seismic energy. And the setting of the first strip-shaped holes will not cause torsional failure on the premise of meeting the torsional energy dissipation, making the energy dissipation stable. At the same time, the first strip-shaped holes can also enhance the longitudinal deformation ability and vertical tensile strength of the steel damper unit. The comb-shaped steel damper can dissipate seismic energy independently in both the transverse and longitudinal directions, without interference, with small mechanical property differences, and a compact structure. Only one set of comb-shaped steel dampers needs to be set to achieve energy dissipation in both the longitudinal and transverse directions, greatly saving the installation space, reducing the project cost, and saving more than 30% of the comprehensive cost.

[0009] Preferably, the included angle between the first strip-shaped hole and the transverse direction of the steel damper unit is less than or equal to 60°, and the included angle between the first strip-shaped hole and the transverse direction of the steel damper unit is greater than or equal to 45°.

[0010] With this setting method, the included angle between the first strip-shaped hole and the transverse direction of the steel damper unit is an acute angle, and the acute angle range is 45° - 60°. First, it is convenient for the transverse spacing distribution and longitudinal setting of the first strip-shaped hole, avoiding excessive transverse width of the steel damper unit and increasing the floor area. Second, it can improve the mechanical properties, enhance the deformation ability and increase the service life at the same time.

[0011] Preferably, it further includes an upper connection plate and a lower connection plate. The upper connection plate is used for fixedly connecting with the bridge beam body, the upper part of the steel damper unit is connected to the upper connection plate, the lower connection plate is used for fixedly connecting with the bridge pier, and the lower part of the steel damper unit is connected to the lower connection plate, which is convenient for connecting to form vertical load-bearing and tensile resistance.

[0012] Preferably, it further includes two tensile plates and two limiting blocks. The two limiting blocks are located outside the longitudinal sides of the steel damping unit. The limiting blocks are arranged transversely along the steel damping unit and fixed to the upper connecting plate. The two tensile plates are located outside the transverse sides of the steel damping unit. The tensile plates are arranged longitudinally along the steel damping unit and fixed to the upper connecting plate. The cross-section of the tensile plate is vertically folded. A vertically folded card slot is formed between the tensile plate and the upper connecting plate. The two vertically folded card slots are arranged facing each other. A tensile connecting plate is jointly clamped in the two vertically folded card slots. The tensile connecting plate is located between the two limiting blocks. There are gaps between the tensile connecting plate and the two limiting blocks respectively. The tensile connecting plate is fixedly connected to the upper part of the steel damping unit. A first sliding plate is embedded in the upper part of the tensile connecting plate. The first sliding plate is in sliding contact with the bottom surface of the upper connecting plate. The tensile connecting plate can slide longitudinally along the steel damping unit.

[0013] With the above structural form, the two tensile plates and the two limiting blocks are fixed to the upper connecting plate at a total of four positions on the longitudinal two ends and the transverse two sides. The tensile connecting plate is located within the enclosure of the two tensile plates and the two limiting blocks. The tensile connecting plate is jointly clamped through the vertically folded card slots formed between the tensile plate and the upper connecting plate, and an upper and lower load-bearing structure and a tensile structure can be formed. At the same time, the vertically folded card slots serve as transverse limits. Under the action of the first sliding plate, the tensile connecting plate can drive the steel damping unit to slide longitudinally along the steel damping unit, forming a longitudinal relative sliding with the upper connecting plate. The sliding distance can be the gap size at both ends. If it exceeds the gap, it will be blocked by the limiting blocks.

[0014] In this way, it can not only meet the tensile and load-bearing capacities, but also enable the tensile connecting plate to drive the steel damping unit to slide longitudinally along the steel damping unit to be less than or equal to the size of the two gaps, thereby being able to release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure, without causing additional internal forces to the structure.

[0015] Preferably, a second sliding plate is embedded at the contact between the tensile connecting plate and the side surface of the vertically folded card slot, and a third sliding plate is embedded at the contact between the tensile connecting plate and the bottom surface of the vertically folded card slot, reducing the sliding friction and improving the ability to release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure.

[0016] Preferably, the steel damping unit includes two symmetric parts. The two symmetric parts are distributed longitudinally along the steel damping unit. The two symmetric parts are symmetrically arranged. The two symmetric parts are butted, which is convenient for installation.

[0017] Preferably, both between the upper parts of the two symmetric parts and between the lower parts of the two symmetric parts are connected by pressing plates. The two ends of the pressing plates are respectively connected to the symmetric parts through anchor bolts from the inside of the symmetric parts, which is convenient for installation.

[0018] Preferably, bolt holes are provided in both the upper and lower parts of the symmetric part. The bolt holes are the second strip-shaped holes arranged longitudinally along the steel damping unit. By providing the second strip-shaped holes, the longitudinal positions of the anchoring bolts connecting the two symmetric parts can be changed, and the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure can be released without causing additional internal forces to the structure.

[0019] Preferably, the longitudinal section of the steel damping unit is in the shape of a runway, an elliptical ring or a circular ring;

[0020] Or half of the longitudinal part of the steel damping unit is in the shape of a standing M-like shape.

[0021] The above structural forms have good mechanical properties, good deformation ability and long service life.

[0022] Preferably, the steel damping unit includes at least two sub-units arranged successively from inside to outside.

[0023] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0024] 1. For the comb-shaped steel damper of the present invention, by providing the first strip-shaped holes, a comb-shaped structure is formed at both ends. The steel damping unit of this structure can not only dissipate energy longitudinally along its bending direction, but also twist and deform and generate displacement along the transverse direction along the first strip-shaped holes between the combs, effectively dissipating seismic energy. And the setting of the first strip-shaped holes will not cause torsional failure on the premise of meeting torsional energy dissipation, making the energy dissipation stable. At the same time, the first strip-shaped holes can also enhance the longitudinal deformation ability and vertical tensile ability of the steel damping unit. The comb-shaped steel damper can dissipate seismic energy independently in both the transverse and longitudinal directions without interference, with small mechanical property differences, a compact structure. Only one set of comb-shaped steel dampers needs to be set to achieve energy dissipation in both the longitudinal and transverse directions, greatly saving the installation space, reducing the project cost, and saving more than 30% of the comprehensive cost. And it dissipates seismic energy through the plastic deformation of the metal, so as to achieve the purpose of shock absorption. The metal material is less affected by the environment, with stable performance, good durability, low maintenance cost, and small planar size.

[0025] 2. For the comb-shaped steel damper of the present invention, the included angle between the first strip-shaped holes and the transverse direction of the steel damping unit is an acute angle, and the acute angle range is 45° - 60°. First, it is convenient for the transverse interval distribution and longitudinal setting of the first strip-shaped holes, avoiding the excessive transverse width of the steel damping unit and the increase in floor area. Second, it can improve the mechanical properties, enhance the deformation ability and increase the service life at the same time.

[0026] 3. The comb-shaped steel damper of the present invention can meet the tensile and load-bearing capacities, and at the same time enable the tensile connection plate to drive the steel damper unit to slide longitudinally along the steel damper unit by a size less than or equal to the size of two gaps, thereby being able to release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure without causing additional internal forces to the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the transverse schematic diagram of the comb-shaped steel damper described in Embodiment 1 Figure 1 ;

[0028] Figure 2 is the longitudinal schematic diagram of the comb-shaped steel damper described in Embodiment 1 Figure 1 ;

[0029] Figure 3 is the elevation schematic diagram of the symmetric part in Embodiment 1;

[0030] Figure 4 is the plan schematic diagram of the symmetric part in Embodiment 1;

[0031] Figure 5 is the longitudinal deformation schematic diagram of the comb-shaped steel damper described in Embodiment 1;

[0032] Figure 6 is the transverse deformation schematic diagram of the comb-shaped steel damper described in Embodiment 1;

[0033] Figure 7 is the vertical deformation comparison diagram of the comb-shaped steel damper described in Embodiment 1;

[0034] Figure 8 is the gap schematic diagram;

[0035] Figure 9 is the elevation schematic diagram of the symmetric part in Embodiment 2;

[0036] Figure 10 is the plan schematic diagram of the symmetric part in Embodiment 2;

[0037] Figure 11 is the plan schematic diagram of the steel damper unit in Embodiment 2;

[0038] Figure 12 is the elevation schematic diagram of the symmetric part in Embodiment 3;

[0039] Figure 13 is the plan schematic diagram of the symmetric part in Embodiment 4;

[0040] Figure 14 is an optional elevation schematic diagram of the steel damper unit;

[0041] Figure 15It is an optional elevation schematic diagram of the symmetric part;

[0042] Figure 16 It is an optional elevation schematic diagram of the steel damping unit;

[0043] Figure 17 It is the lateral schematic of the comb-shaped steel damper described in Embodiment 1 Figure 2 ;

[0044] Figure 18 It is the longitudinal schematic of the comb-shaped steel damper described in Embodiment 1 Figure 2 ;

[0045] Figure 19 It is the longitudinal bridge direction schematic diagram of the installation state of the comb-shaped steel damper;

[0046] Figure 20 It is the transverse bridge direction schematic diagram of the installation state of the comb-shaped steel damper;

[0047] Figure 21 It is the longitudinal bridge direction schematic diagram of the installation state of the prior art steel damper;

[0048] Figure 22 It is the transverse bridge direction schematic diagram of the installation state of the prior art steel damper.

[0049] Icon: 1 - First anchor bolt; 2 - Upper connecting plate; 3 - Steel damping unit; 31 - Symmetric part; 32 - First strip-shaped hole; 311 - First damping unit; 312 - Second damping unit; 313 - Third damping unit; 314 - Fourth damping unit; 4 - Tensile connecting plate; 5 - Tensile plate; 6 - Limit block; 61 - Gap; 7 - Pressure plate; 71 - Second anchor bolt; 72 - Bolt hole; 8 - Lower connecting plate; 91 - First sliding plate; 92 - Second sliding plate; 93 - Third sliding plate. Detailed implementation manners

[0050] The present invention will be described in detail below with reference to the drawings.

[0051] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0052] Embodiment 1

[0053] A comb-shaped steel damper, see Figures 1 - 4 and Figures 17 - 18, including a steel damping unit 3, the longitudinal section of the steel damping unit 3 is a left-right symmetric structure and a closed-loop structure; several first strip holes 32 are respectively arranged at the longitudinal two ends of the steel damping unit 3, the first strip holes 32 are arranged along the length direction of the steel damping unit 3, and all the first strip holes 32 at each end are spaced apart transversely along the steel damping unit 3.

[0054] As Figure 1 , Figure 4 and Figure 17 shown, by respectively arranging several first strip holes 32 at the longitudinal two ends of the steel damping unit 3, the first strip holes 32 are arranged along the length direction of the steel damping unit 3, and all the first strip holes 32 at each end are spaced apart transversely along the steel damping unit 3, a comb-shaped structure is formed at both ends, and the first strip holes 32 enable the steel damping unit 3 to have more deformation space transversely, thereby making its transverse deformation ability better and its transverse adaptability better. The steel damping unit 3 with this structure can not only achieve longitudinal energy dissipation along its bending direction, but also twist and deform along the transverse direction along the first strip holes 32 between the comb teeth and generate displacement, effectively dissipating seismic energy, and the setting of the first strip holes 32 will not cause torsional failure on the premise of meeting torsional energy dissipation, making the energy dissipation stable. At the same time, the first strip holes 32 can also enhance the longitudinal deformation ability and vertical tensile ability of the steel damping unit 3. The comb-shaped steel damper can dissipate seismic energy independently in both the transverse and longitudinal directions, without interference, with small mechanical property differences, and a compact structure. Only one set of comb-shaped steel dampers needs to be set to achieve longitudinal and transverse energy dissipation, as Figures 19 - 20 , greatly saving the installation space, reducing the project cost, and saving more than 30% of the comprehensive cost.

[0055] In this embodiment, as Figures 1 - 2 or Figures 17 - 18 shown, the transverse direction of the steel damping unit 3 is the X direction, and the longitudinal direction is the Y direction. The X direction can correspond to the transverse bridge direction or the longitudinal bridge direction. Generally, as Figures 19 - 20 shown, the longitudinal direction of the steel damping unit 3 corresponds to the longitudinal bridge direction and the transverse direction corresponds to the transverse bridge direction. The damper further includes an upper connecting plate 2 and a lower connecting plate 8. The upper connecting plate 2 is used for fixedly connecting with the bridge beam body, the upper part of the steel damping unit 3 is connected to the upper connecting plate 2, the lower connecting plate 8 is used for fixedly connecting with the bridge pier, and the lower part of the steel damping unit 3 is connected to the lower connecting plate 8. Specifically, it can be fixedly connected through the first anchor bolt 1, which is convenient for connecting to form vertical load-bearing and tensile resistance.

[0056] Figures 17 - 18In the figure, the first anchoring bolts 1 in the upper part are respectively connected to the upper beam body, and the first anchoring bolts 1 in the lower part are connected to the pier cushion stone or the embedded steel plate. The upper connecting plate 2 is connected to the upper part of the comb-shaped steel damper unit 3 by bolts or welding. The lower connecting plate 8 is connected to the lower part of the comb-shaped steel damper unit 3 by bolts or welding. This structure is a fixed structure of the steel damper, which is used for the fixed end of the bridge and in the scenario without temperature displacement.

[0057] As another option, as Figure 1 and Figure 2 shown, the damper further includes two tensile plates 5 and two limiting blocks 6. As Figure 2 shown, the two limiting blocks 6 are located outside the longitudinal sides of the steel damper unit 3, and the limiting blocks 6 are arranged transversely along the steel damper unit 3 and fixed to the upper connecting plate 2; as Figure 1 shown, the two tensile plates 5 are located outside the transverse sides of the steel damper unit 3, the tensile plates 5 are arranged longitudinally along the steel damper unit 3 and fixed to the upper connecting plate 2. The cross-section of the tensile plate 5 is vertically folded, and a vertically folded card slot is formed between the tensile plate 5 and the upper connecting plate 2. The two vertically folded card slots are arranged facing each other, and a tensile connecting plate 4 is jointly clamped in the two vertically folded card slots. As Figure 2 shown, the tensile connecting plate 4 is located between the two limiting blocks 6. There are gaps 61 between the tensile connecting plate 4 and the two limiting blocks 6 respectively. The tensile connecting plate 4 is fixedly connected to the upper part of the steel damper unit 3. A first sliding plate 91 is embedded in the upper part of the tensile connecting plate 4. The first sliding plate 91 is in sliding contact with the bottom surface of the upper connecting plate 2, and the tensile connecting plate 4 can slide longitudinally along the steel damper unit 3.

[0058] In the above structural form, the two tensile plates 5 and the two limiting blocks 6 are fixed to the upper connecting plate 2 at a total of four positions at the longitudinal ends and transverse sides. The tensile connecting plate 4 is located within the enclosure of the two tensile plates 5 and the two limiting blocks 6. The tensile connecting plate 4 is jointly clamped by the vertically folded card slots formed between the tensile plate 5 and the upper connecting plate 2, and an upper and lower load-bearing structure and a tensile structure can be formed; at the same time, the vertically folded card slot serves as a transverse limit. Under the action of the first sliding plate 91, the tensile connecting plate 4 can drive the steel damper unit 3 to slide longitudinally along the steel damper unit 3, forming a longitudinal relative sliding with the upper connecting plate 2. The sliding distance can be the size of the gaps 61 at both ends. If it exceeds the gaps 61, it will be blocked by the limiting blocks 6. Through the above method, it can not only meet the tensile and load-bearing capacities, but also enable the tensile connecting plate 4 to drive the steel damper unit 3 to slide longitudinally along the steel damper unit 3 to be less than or equal to the size of the two gaps 61, thereby being able to release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure, without causing additional internal forces to the structure.

[0059] AsFigure 1 As shown, a second sliding plate 92 is embedded at the contact between the tensile connecting plate 4 of this embodiment and the side surface of the vertical folding groove, and a third sliding plate 93 is embedded at the contact between the tensile connecting plate 4 and the bottom surface of the vertical folding groove, reducing sliding friction and improving the ability to release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure. Among them, the tensile connecting plate 4 is provided with a sliding plate, and the sliding contact surface thereof should be correspondingly provided with a stainless steel plate. And the first sliding plate 91 can be divided into blocks on the plane and respectively embedded in the tensile connecting plate 4.

[0060] As Figures 2 - 3 shown, the steel damping unit 3 of this embodiment includes two symmetrical parts 31. The two symmetrical parts 31 are longitudinally distributed along the steel damping unit 3, the two symmetrical parts 31 are symmetrically arranged, and the two symmetrical parts 31 are butted, which is convenient for installation and can be welded or integrally formed. In this embodiment, both between the upper parts of the two symmetrical parts 31 and between the lower parts of the two symmetrical parts 31 are connected by a pressing plate 7. The pressing plate 7 and the symmetrical part 31 are provided with corresponding bolt holes 72, as Figure 4 shown. Both ends of the pressing plate 7 are respectively connected to the symmetrical part 31 from the inner side of the symmetrical part 31 through the second anchor bolt 71 in cooperation with the corresponding bolt hole 72, which is convenient for installation. The pressing plate 7 can be a whole and can cover the transverse direction of the symmetrical part 31, or multiple pressing plates 7 can be distributed transversely to the symmetrical part 31, and it is necessary to be able to connect the two symmetrical parts 31 together.

[0061] As Figure 5 shown, the steel damper dissipates energy along the Y-direction deformation direction caused by the earthquake. And the tensile connecting plate 4 can freely slide in the chute formed by the tensile plate 5 perpendicular to the Figure 5 paper plane direction, preventing the steel damping unit 3 from torsional deformation.

[0062] As Figure 6 shown, the steel damper dissipates energy along the X-direction deformation direction caused by the earthquake. The tensile connecting plate 4, the tensile plate 5 and the lower connecting plate 8 lock the comb-shaped steel damping unit 3 through connecting bolts. When the upper connecting plate 2 and the lower connecting plate 8 have a relative displacement along the X direction, it drives the steel damping unit 3 to undergo torsional deformation, thereby dissipating earthquake energy.

[0063] As Figure 7 shown, the deformation situation of the steel damper when bearing the vertical tensile force caused by the earthquake, deforming from the dotted line to the solid line, and having a considerable tensile capacity to prevent structural damage.

[0064] As Figure 8As shown, there is a certain gap 61 between the tensile connecting plate 4 and the limit stop 6, and the width of the gap 61 is S. This gap 61 is to release the thermal expansion and contraction deformation of the bridge or structure due to temperature when there is no earthquake, and it does not allow the steel damper to deform, so as to apply internal stress to the beam body.

[0065] In addition, in this embodiment, the longitudinal section of the steel damping unit 3 is in the shape of a runway, an elliptical ring or a circular ring; as Figures 2 - 3 shown, the longitudinal section of the steel damping unit 3 is in the shape of a runway. As Figure 14 shown, the longitudinal section of the steel damping unit 3 is in the shape of an elliptical ring. As Figure 16 shown, the longitudinal section of the steel damping unit 3 is in the shape of a circular ring. Or as Figure 15 shown, half of the longitudinal direction of the steel damping unit 3 is in the shape of a standing M-like shape. With the above structural form, it has good mechanical properties, good deformation ability and long service life.

[0066] The comb-shaped steel damper in this embodiment can achieve large deformation displacements in both the X and Y directions, is structurally compact, and has the function of vertical tensile resistance; it can release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure without causing additional internal forces to the structure; it changes the disadvantage that the traditional steel damper can only deform in one direction. The comb-shaped steel damper can deform and consume energy in two directions, with uniform stress, and the performance difference in the two directions is small. All materials are metals, and when used in engineering, their mechanical properties are less affected by the environment, with stable performance, good durability and low maintenance costs.

[0067] Embodiment 2

[0068] This embodiment provides a comb-shaped steel damper. On the basis of Embodiment 1, referring to Figures 9 - 11 , bolt holes 72 are provided both above and below the symmetric part 31. The bolt holes 72 are the second strip-shaped holes arranged along the longitudinal direction of the steel damping unit 3. By setting the second strip-shaped holes, the longitudinal positions of the two symmetric parts 31 connected by the anchor bolts can be changed, and it can also release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure without causing additional internal forces to the structure. Compared with the way of sliding through the slide plate in Embodiment 1, the friction coefficient of this way is larger, but it can also release the temperature displacement caused by the thermal expansion and contraction of the daily beam body or structure without causing additional internal forces to the structure. And this implementation scheme can be used in superposition with the slide plate method in Embodiment 1, increasing the ability to release temperature displacement.

[0069] As Figure 11 shown, the length of the second strip-shaped hole is 2S. Initially, the second anchor bolt 71 is anchored in the middle of the second strip-shaped hole, so that the second anchor bolt 71 can move left and right.

[0070] Embodiment 3

[0071] This embodiment provides a comb-shaped steel damper. On the basis of Embodiment 1 or Embodiment 2, refer to Figure 12 As shown, the steel damping unit 3 includes at least two sub-units arranged in sequence from inside to outside. As Figure 12 As shown, the steel damping unit 3 includes a first damping unit 311, a second damping unit 312, a third damping unit 313, and a fourth damping unit 314 arranged in sequence from inside to outside.

[0072] Of course, as Figure 3 As shown, generally, the steel damping unit 3 adopts a single-layer structure both inside and outside, without being layered inside and outside.

[0073] Embodiment 4

[0074] This embodiment provides a comb-shaped steel damper. On the basis of Embodiment 1, Embodiment 2, or Embodiment 3, refer to Figure 13 , the transverse angle between the first strip-shaped hole 32 and the steel damping unit 3 is less than or equal to 60°, and the transverse angle between the first strip-shaped hole 32 and the steel damping unit 3 is greater than or equal to 45°.

[0075] Adopting this setting method makes the angle between the first strip-shaped hole 32 and the transverse direction of the steel damping unit 3 an acute angle, and the acute angle range is 45° - 60°. First, it can facilitate the transverse interval distribution and longitudinal setting of the first strip-shaped hole 32, avoid the excessive transverse width of the steel damping unit 3, and avoid the increase in floor area. Second, it can improve the mechanical properties, enhance the deformation ability while increasing the service life.

[0076] Figure 13 In, it shows that the first strip-shaped hole 32 is arranged upward, and it can also be arranged downward.

[0077] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A comb-shaped steel damper, comprising a steel damping unit (3), wherein the longitudinal section of the steel damping unit (3) is a bilaterally symmetrical structure and a closed-loop structure; characterized in that: A plurality of first strip holes (32) are respectively provided at both longitudinal ends of the steel damping unit (3); the first strip holes (32) are arranged along the length direction of the steel damping unit (3), and all the first strip holes (32) at each end are distributed at intervals along the transverse direction of the steel damping unit (3); a transverse angle between the first strip holes (32) and the steel damping unit (3) is less than or equal to 60°, and a transverse angle between the first strip holes (32) and the steel damping unit (3) is greater than or equal to 45°; The invention also comprises two tensile plates (5) and two limit blocks (6), wherein the two limit blocks (6) are located outside the longitudinal sides of the steel damping unit (3), the limit blocks (6) are arranged transversely along the steel damping unit (3) and are fixed to the upper connection plate (2), the two tensile plates (5) are located outside the transverse sides of the steel damping unit (3), the tensile plates (5) are arranged longitudinally along the steel damping unit (3) and are fixed to the upper connection plate (2), the tensile plates (5) have a vertical folded cross section, a vertical folded slot is formed between the tensile plates (5) and the upper connection plate (2), and the two The vertical folding slots are arranged opposite to each other, and a tensile connecting plate (4) is commonly connected in the two vertical folding slots. The tensile connecting plate (4) is located between the two limit blocks (6), and there is a gap (61) between the tensile connecting plate (4) and the two limit blocks (6). The tensile connecting plate (4) is fixedly connected to the upper part of the steel damping unit (3), and a first slide plate (91) is embedded in the upper part of the tensile connecting plate (4). The first slide plate (91) is in sliding contact with the bottom surface of the upper contact plate (2), and the tensile connecting plate (4) can slide longitudinally along the steel damping unit (3).

2. The comb-shaped steel damper according to claim 1, characterized in that: It also comprises a lower connection plate (8), the upper connection plate (2) being used for fixed connection with the bridge beam body, the upper part of the steel damping unit (3) being connected to the upper connection plate (2), the lower connection plate (8) being used for fixed connection with the bridge pier, and the lower part of the steel damping unit (3) being connected to the lower connection plate (8).

3. The comb-tooth steel damper according to claim 1, characterized in that: A second slide plate (92) is embedded in the contact area between the anti-tension connecting plate (4) and the side surface of the vertical folding slot, and a third slide plate (93) is embedded in the contact area between the anti-tension connecting plate (4) and the bottom surface of the vertical folding slot.

4. The comb-shaped steel damper according to any one of claims 1 to 3, characterized in that: The steel damping unit (3) comprises two symmetrical parts (31), the two symmetrical parts (31) are distributed longitudinally along the steel damping unit (3), the two symmetrical parts (31) are symmetrically arranged, and the two symmetrical parts (31) are butt-jointed.

5. The comb-shaped steel damper according to claim 4, characterized in that: The upper parts of the two symmetrical parts (31) and the lower parts of the two symmetrical parts (31) are connected via a pressing plate (7), and both ends of the pressing plate (7) are connected to the symmetrical parts (31) from the inner sides of the symmetrical parts (31) via anchor bolts.

6. The comb-tooth steel damper according to claim 5, characterized in that: Bolt holes (72) are provided at the upper and lower parts of the symmetrical portion (31), and the bolt holes (72) are second strip-shaped holes arranged along the longitudinal direction of the steel damping unit (3).

7. The comb-tooth steel damper according to any one of claims 1 to 3, characterized in that: The longitudinal section of the steel damping unit (3) is in the shape of a racetrack, an elliptical ring or a circular ring; Or the longitudinal half of the steel damping unit (3) is in a sideways M-shape.

8. The comb-tooth steel damper according to any one of claims 1 to 3, characterized in that: The steel damping unit (3) comprises at least two sub-units which are sequentially arranged inside and outside.

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