MODULAR GRADED ENERGY-DISSIPATION DAMPER FOR RESISTING WIND VIBRATION AND FREQUENT, MODERATE, RARE, AND MEGA EARTHQUAKES

Description

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims the priority to the Chinese patent application with the filing No. 202411510203.5, entitled “MODULAR GRADED ENERGY-DISSIPATION DAMPER FOR RESISTING WIND VIBRATION AND FREQUENT, MODERATE, RARE, AND MEGA EARTHQUAKES” and filed on Oct. 28, 2024 with the Chinese Patent Office, the contents of which are incorporated herein by reference in their entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of earthquake prevention and disaster reduction, and more particularly to a modular graded energy-dissipation damper for resisting wind vibration, frequent earthquake (minor earthquake), moderate earthquake, rare earthquake (major earthquake), and mega earthquake.

BACKGROUND ART

For high-rise and super-high-rise buildings, under the action of wind loads, the economic costs often significantly increase and the vibration reduction effect is unobvious by only increasing the structure's own mass to reduce wind-induced vibration. Therefore, many energy-dissipation dampers mainly for wind resistance are applied in the engineering field, among which the tuned mass damper is well-known and relatively mature in development, and in recent years, viscoelastic dampers have also achieved sound development in the field of wind resistant design.

With the goals of enabling the dampers to effectively dissipate energy under different seismic levels and improving economic efficiency and safety, multi-level graded yielding dampers have been extensively researched and applied in recent years. For example, the applicant's previously filed utility model patent with granted publication number CN 221545989 U discloses a graded yielding damper capable of resisting frequent earthquake, moderate earthquake, rare earthquake, and mega earthquake, including a lower baseplate and an upper baseplate distributed at an interval, where a first yielding energy dissipation component is mounted between the lower baseplate and the upper baseplate, and a second yielding energy dissipation component, a third yielding energy dissipation component, and a fourth yielding energy dissipation component are mounted between the lower baseplate and a baffle plate; the first yielding energy dissipation component includes at least two first energy dissipation metal plates arranged in parallel, whose upper ends and lower ends are respectively fixedly connected with the lower baseplate and the upper baseplate; the upper ends of the second yielding energy dissipation component, the third yielding energy dissipation component and the fourth yielding energy dissipation component respectively extend into the serrated grooves of the baffle plate, with gaps provided between the upper ends and the inner walls of the serrated grooves. The utility model realizes phased yielding according to the seismic source level, achieves a significant phased yielding effect, and meets the purpose of multi-level energy-dissipation and seismic mitigation.

However, the technique of the above patent still has problems such as unclear yielding point, inability to play an energy dissipation role under the action of wind, and complex structure.

Therefore, it is a problem that needs to be solved urgently by those skilled in the art to provide a graded energy-dissipation damper capable of coordinating multiple situations such as wind vibration, frequent earthquake, moderate earthquake, rare earthquake, and mega earthquake.

SUMMARY

In view of this, the present disclosure provides a modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, which can realize energy dissipation respectively under the action of frequent earthquake, moderate earthquake, rare earthquake, mega earthquake and strong wind, and in which the energy dissipation components are modular and can be replaced and adjusted according to energy dissipation requirements.

In order to achieve the above purposes, the present disclosure adopts the following technical solutions.

A modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes includes an upper baseplate and a lower baseplate, where frequent earthquake energy dissipation components, moderate earthquake energy dissipation components, rare earthquake energy dissipation components and mega earthquake energy dissipation components are sequentially provided between the upper baseplate and the lower baseplate from the two ends to the middle; and further includes wind vibration energy dissipation components provided between the upper baseplate and the lower baseplate and located at the two sides of the energy dissipation components, where the wind vibration energy dissipation components each include an outer plate and an inner plate arranged at an interval and connected with the upper baseplate and the lower baseplate respectively, and a viscoelastic layer connected between the corresponding overlapping surfaces of the outer plate and the inner plate.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the frequent earthquake energy dissipation components include two X-shaped plates connected between the upper baseplate and the lower baseplate and located at the two ends.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, a baffle plate is fixed to the bottom surface of the upper baseplate in its length direction, the baffle plate is located between the two X-shaped plates, the bottom edge of the baffle plate is provided in its length direction with a plurality of shear key slots, and the widths of the plurality of shear key slots gradually increase from the two ends to the middle of the baffle plate, and the shear key slots of different widths correspond to the moderate earthquake energy dissipation components, the rare earthquake energy dissipation components and the mega earthquake energy dissipation components, respectively.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the moderate earthquake energy dissipation components, the rare earthquake energy dissipation components and the mega earthquake energy dissipation components each include a triangular plate, the bottom sides of the triangular plates are connected with the lower baseplate, the top ends of the triangular plates are located in the shear key slots, with movable gaps existing between the top ends and the two sides of the shear key slots, and the gaps between the triangular plates of the moderate earthquake energy dissipation components, the rare earthquake energy dissipation components and the mega earthquake energy dissipation components and the shear key slots increase in sequence.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the number of the X-shaped plates is two, and the numbers of the triangular plates of the moderate earthquake energy dissipation components, the rare earthquake energy dissipation components and the mega earthquake energy dissipation components are all two.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the top edge of the outer plate is connected with the upper baseplate, and the bottom edge of the inner plate is connected with the lower baseplate.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the top surface of the upper baseplate and the bottom surface of the lower baseplate are each fixedly provided in the length direction with two pads symmetrically.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the two pads on the upper baseplate are located at the inner sides of the two outer plates, and the two pads on the lower baseplate are located at the outer sides of the two inner plates.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the pads are welded and fixed to the upper baseplate and the lower baseplate after being cut into notches.

Preferably, in the above-mentioned modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, the upper baseplate and the lower baseplate are provided with a plurality of screw holes for connecting the energy dissipation components, with the connecting performed by inserting bolts into the screw holes.

It can be seen from the above technical solutions that compared with the prior art, the present disclosure provides a modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, which has the following beneficial effects.

• • 1. The present disclosure improves a metal damper with a single yielding point or not obvious graded yielding, to make it have multiple obvious/clear yielding points and be capable of dissipating energy respectively under frequent earthquake, moderate earthquake, rare earthquake, and mega earthquake.
  • 2. The present disclosure improves the seismic mitigation and energy-dissipation dampers used solely for earthquakes, to integrate the earthquake energy dissipation components with the wind vibration energy dissipation components to achieve a combination of wind resistance and seismic mitigation.
  • 3. The present disclosure modularizes the damper, such that each energy dissipation component is detachable and replaceable, and the size of the energy dissipation component may be changed according to actual seismic mitigation and wind resistance requirements, and the yielding components may be partially replaced after an earthquake, enabling better economic efficiency.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the prior art, the drawings required for use in the description of embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For a person ordinarily skilled in the art, other drawings may be obtained based on the provided drawings without paying creative work.

FIG. 1 is a schematic structural view of a modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes provided by the present disclosure;

FIG. 2 is a side view of a modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes provided by the present disclosure;

FIG. 3 is a schematic structural view of a frequent earthquake energy dissipation component provided by the present disclosure;

FIG. 4 is a schematic structural view of a moderate earthquake energy dissipation component, a rare earthquake energy dissipation component and a mega earthquake energy dissipation component provided by the present disclosure;

FIG. 5 is a schematic structural view of a wind vibration energy dissipation component provided by the present disclosure; and

FIG. 6 is a schematic structural view of an upper baseplate provided by the present disclosure.

In the above:

• • 1—upper baseplate; 2—lower baseplate; 3—frequent earthquake energy dissipation component; 4—moderate earthquake energy dissipation component; 5—rare earthquake energy dissipation component; 6—mega earthquake energy dissipation component; 7—viscoelastic layer; 8—outer plate; 9—inner plate; 10—wind vibration energy dissipation component; 11—baffle plate; 12—bolt; 13—pad; 14—screw hole.

DETAILED DESCRIPTION OF EMBODIMENTS

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described examples are only some of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by a person ordinarily skilled in the art without creative work fall within the scope of protection of the present disclosure.

Referring to FIG. 1 and FIG. 2, embodiments of the present disclosure discloses a modular graded energy-dissipation damper for resisting wind vibration and frequent, moderate, rare, and mega earthquakes, including an upper baseplate 1 and a lower baseplate 2, where frequent earthquake energy dissipation components 3, moderate earthquake energy dissipation components 4, rare earthquake energy dissipation components 5 and mega earthquake energy dissipation components 6 are sequentially provided between the upper baseplate 1 and the lower baseplate 2 from the two ends to the middle; and further including wind vibration energy dissipation components 10 provided between the upper baseplate 1 and the lower baseplate 2 and located at the two sides of the energy dissipation components, where the wind vibration energy dissipation components 10 each include an outer plate 8 and an inner plate 9 arranged at an interval and connected with the upper baseplate 1 and the lower baseplate 2 respectively, and a viscoelastic layer 7 connected between the corresponding overlapping surfaces of the outer plate 8 and the inner plate 9.

In this embodiment, for the wind vibration energy dissipation component 10, the outer plate 8 is connected with the upper baseplate 1 and the inner plate 9 is connected with the lower baseplate 2, through bolts 12; a layer of viscoelastic material is connected at the middle part where the outer plate 8 and the inner plate 9 overlaps, and under the action of wind vibration, the outer plate 8 and the inner plate 9 undergoes a relative displacement, and the viscoelastic material deforms to dissipate energy; and the area and thickness of the viscoelastic layer may be adjusted by adjusting the overlapping area and thickness of the outer plate 8 and the inner plate 9.

Referring to FIG. 3, the frequent earthquake energy dissipation components 3 include two X-shaped plates connected between the upper baseplate 1 and the lower baseplate 2 and located at the two ends. Specifically, the frequent earthquake energy dissipation component 3 is an X-shaped plate with an upper base and a lower base; the bases are provided with screw holes 14 and connected with the upper baseplate 1 and the lower baseplate 2 via bolts 12; and during a frequent earthquake, the upper baseplate 1 and the lower baseplate 2 generate relatively small relative displacement, and the frequent earthquake energy dissipation components 3 deform to yield and dissipate energy.

To further optimize the above technical solution, a baffle plate 11 is fixed to the bottom surface of the upper baseplate 1 in its length direction, the baffle plate 11 is located between the two X-shaped plates. In this embodiment, the baffle plate 11 is welded to the middle part in the length direction of the upper baseplate 1, the bottom edge of the baffle plate 11 is provided in its length direction with a plurality of shear key slots, the widths of the plurality of shear key slots gradually increase from the two ends to the middle of the baffle plate 11, and the shear key slots of different widths correspond to the moderate earthquake energy dissipation components 4, the rare earthquake energy dissipation components 5 and the mega earthquake energy dissipation components 6, respectively.

Referring to FIG. 4, the moderate earthquake energy dissipation components 4, the rare earthquake energy dissipation components 5 and the mega earthquake energy dissipation components 6 all include triangular plates, the bottom sides of the triangular plates are connected with the lower baseplate 2, the top ends of the triangular plates are located in the shear key slots, with movable gaps existing between the top ends and the two sides of the shear key slots, and the gaps between the triangular plates of the moderate earthquake energy dissipation components 4, the rare earthquake energy dissipation components 5 and the mega earthquake energy dissipation components 6 and the shear key slots increase in sequence.

Specifically, the moderate earthquake energy dissipation components 4, the rare earthquake energy dissipation components 5 and the mega earthquake energy dissipation components 6 are triangular plates with lower bases, where the bases have screw holes 14 and are connected with the lower baseplate 2 by bolts 12; the upper ends of the triangular plates are free ends, which are placed at the centers of the shear key slots of the baffle plate 11, and certain gaps are left between them with the side walls of the shear key slots, the gap lengths of the shear key slots determine the amount of displacement that causes each energy dissipation component to deform, where the gap between the top end of the mega earthquake energy dissipation component 6 and the slot is the largest, followed by that of the rare earthquake energy dissipation component 5, and that of the moderate earthquake energy dissipation component 4 is the smallest; during a moderate earthquake, the frequent earthquake energy dissipation components 3 yield first, and the top ends of the moderate earthquake energy dissipation components 4 begin to contact the side walls of the shear key slots and generate deformation to yield and dissipate energy, and the rare earthquake energy dissipation components 5 and the mega earthquake energy dissipation components 6 do not contact the slot walls and do not participate in energy dissipation; during a rare earthquake, after the frequent earthquake energy dissipation components 3 and the moderate earthquake energy dissipation components 4 yield one after another, the rare earthquake energy dissipation components 5 come into contact with the slot walls to yield and dissipate energy; and during a mega earthquake, after the frequent earthquake energy dissipation components 3, the moderate earthquake energy dissipation components 4 and the rare earthquake energy dissipation components 5 yield one after another, the mega earthquake energy dissipation components 6 come into contact with the slot walls to yield and dissipate energy, thereby realizing graded energy dissipation.

In this embodiment, the length of the shear key slots may be determined according to the seismic resistance requirements.

Each energy dissipation component is connected with the upper baseplate 1 and the lower baseplate 2 by bolts 12, and is an independent module, thereby realizing modularization.

In order to further optimize the above technical solution, the number of the X-shaped plates is two, and the numbers of the triangular plates of the moderate earthquake energy dissipation components 4, the rare earthquake energy dissipation components 5 and the mega earthquake energy dissipation components 6 are all two.

In this embodiment, the energy dissipation components are arranged symmetrically left and right, and the wind vibration energy dissipation components 10 are mounted at the front and behind of the damper.

In this embodiment, for the middle parts of the X-shaped plates and the upper ends of the triangular plates in the energy dissipation components, the plate shapes are smooth curves for transition to prevent stress concentration.

Referring to FIG. 5, the top edges of the outer plates 8 are connected with the upper baseplate 1, and the bottom edges of the inner plates 9 are connected with the lower baseplate 2.

In order to further optimize the above technical solution, the top surface of the upper baseplate 1 and the bottom surface of the lower baseplate 2 are each fixedly provided in the length direction with two pads 13 symmetrically.

Referring to FIG. 2, the two pads 13 on the upper baseplate 1 are located at the inner sides of the two outer plates 8, and the two pads 13 on the lower baseplate 2 are located at the outer sides of the two inner plates 9.

In order to further optimize the above technical solution, the pads 13 are welded and fixed to the upper baseplate 1 and the lower baseplate 2 after being cut into notches (grooves).

Referring to FIG. 6, the upper baseplate 1 and lower baseplate 2 are provided with a plurality of screw holes 14 for connecting the energy dissipation components, with the connecting performed by inserting bolts 12 into the screw holes 14. Specifically, two rows of screw holes 14 are reserved on each of the outer sides of the pads 13 on the upper baseplate 1 and the inner sides of the pads 13 on the lower baseplate 2 respectively for connecting the outer plates 8 and inner plates 9 of wind vibration energy dissipation components 10.

In this embodiment, the upper baseplate 1, the lower baseplate 2, the inner plates 9 and the outer plates 8 of the wind vibration energy dissipation components 10, the frequent earthquake energy dissipation components 3, the moderate earthquake energy dissipation components 4, the rare earthquake energy dissipation components 5, the mega earthquake energy dissipation components 6, the baffle plate 11, and the pads 13 may be made of Q235 steel.

In this specification, the embodiments are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments may be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method parts.

The above description of the disclosed embodiments enables one skilled in the art to implement or use the present disclosure. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments shown herein, but rather will conform to the widest scope consistent with the principles and novel features disclosed herein.