CN111945921B - Hierarchical energy consumption damper - Google Patents

Abstract

The invention discloses a graded energy dissipation damper, comprising two base plates distributed at intervals; a first yield energy dissipation member and a second yield energy dissipation member are installed between the two base plates; the first yield energy dissipation member Two ends of the component are respectively fixedly connected to the two substrates; one end of the second yield energy dissipation component is fixedly connected to one of the substrates, and the other end is oriented and slidably connected to the other substrate. Under the action of small shocks, the second yield energy dissipation member of the graded energy dissipation damper is in an elastic state and does not have the effect of shock absorption and energy dissipation, so only the first yield energy dissipation member is solely responsible for shock absorption and energy dissipation; Under the action of earthquake, the second yield energy dissipation member begins to bend and deform to achieve the purpose of yielding energy dissipation, so the second yield energy dissipation member cooperates with the first yield energy dissipation member to jointly consume seismic energy. It can be seen that the first and second yield energy dissipation parts of the graded energy dissipation damper yield in stages, and have obvious staged yielding energy dissipation effects.

Description

A graded energy dissipation damper

technical field

The invention relates to the technical field of disaster prevention and shock absorption, in particular to a graded energy dissipation damper.

Background technique

Since an earthquake is usually accompanied by an earthquake sequence of main shock, aftershock or swarm, and aftershocks often occur shortly afterward, from the point of view of safety, it is better to have multiple energy dissipators (also known as graded energy dissipation dampers). Road energy dissipation and shock absorption capacity.

Most of the known metal energy dissipators have a single structural shape and energy consumption form, which cannot meet the needs of small earthquakes and large earthquakes at the same time. For example, some graded energy-dissipating dampers can consume energy under large earthquakes, but are in an elastic state during small earthquakes and cannot dissipate energy; while other graded energy-dissipating dampers can yield energy dissipation under small earthquakes. However, damage is easy to occur during a major earthquake, and it is insufficient to undertake the energy dissipation and shock absorption effect under a major earthquake, and cannot completely dissipate the seismic energy.

To sum up, how to provide a graded energy dissipation damper capable of yielding and dissipating energy in stages under small earthquakes, medium earthquakes and large earthquakes has become an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a graded energy-dissipating damper, which can satisfy both the energy-consumption damping of small earthquakes and the energy-consumption damping of medium and large earthquakes.

In order to achieve the above object, the present invention provides a graded energy dissipation damper, comprising two base plates distributed at intervals; a first yield energy dissipation member and a second yield energy dissipation member are installed between the two base plates; Two ends of a yield energy dissipation member are respectively fixedly connected to the two substrates; one end of the second yield energy dissipation member is fixedly connected to one of the substrates, and the other end is oriented and slidably connected to the other substrate.

Preferably, one of the second yielding energy dissipation member and the substrate connected to the second yielding energy dissipation member is provided with a linear sliding hole, and the other is connected with a linear sliding hole for penetrating the linear sliding hole. holes for sliding pins.

Preferably, the two substrates are distributed in parallel; the length direction of the linear sliding hole is perpendicular to the normal line of any one of the substrates.

Preferably, the numbers of the linear sliding holes and the sliding pins are multiple and equal.

Preferably, the inner surface of the base plate is vertically fixed with a pair of wing plates distributed in parallel and spaced apart; the end of the second yield energy dissipation member is fixedly connected with a sliding plate for embedding a pair of the wing plates; all the straight lines The sliding holes are all arranged on the sliding plate; the two ends of the sliding pin are respectively fixedly connected to a pair of the wing plates.

Preferably, all the linear sliding holes are distributed in a rectangular array in the sliding plate.

Preferably, the first yielding assembly includes a plurality of first energy-dissipating metal plates; the cross-sectional dimension of both ends of any one of the first energy-dissipating metal plates is larger than the cross-sectional dimension of the middle portion.

Preferably, the second yielding energy dissipating member includes a plurality of the second energy dissipating metal plates; the top ends of all the second energy dissipating metal plates are fixedly connected through an intermediate plate.

Preferably, any one of the second energy-consuming metal plates is specifically an energy-consuming steel plate.

Preferably, the cross-sectional dimension of any one of the second energy-dissipating metal plates is tapered from one end to the other end; the intermediate plate is connected to the end with the smaller cross-section of all the second energy-dissipating metal plates.

Compared with the above-mentioned background technology, the graded energy dissipation damper provided by the present invention includes two substrates distributed at intervals; a first yield energy dissipation member and a second yield energy dissipation member are installed between the two substrates; Two ends of a yield energy dissipation member are respectively fixedly connected to the two substrates; one end of the second yield energy dissipation member is fixedly connected to one of the substrates, and the other end is oriented and slidably connected to the other substrate.

Under the action of small earthquake, the relative displacement of the two substrates of the graded energy dissipation damper is small, and only the first yield energy dissipation member can be bent and deformed to achieve the purpose of yield energy dissipation. One end is slidably connected to the base plate, and the energy of the external shock source is not enough to make the end of the second yield energy dissipator exceed the sliding constraint range of the base plate. Therefore, the second yield energy dissipator is in the elastic stage during small earthquakes, and the second yield energy dissipator is at this time. Energy-consuming parts do not resist external stress through bending deformation, and do not have the effect of shock absorption and energy consumption. In short, the first yielding energy dissipating member of the graded energy dissipation damper alone absorbs and dissipates energy during small earthquakes.

Under the action of medium and large earthquakes, the relative displacement of the two base plates of the graded energy dissipation damper is relatively large. able purpose. Therefore, the second yielding energy dissipating member cooperates with the first yielding energy dissipating member to jointly dissipate seismic energy. In short, during moderate earthquakes and large earthquakes, the first and second yield energy dissipation members of the graded energy dissipation damper work together.

To sum up, the graded energy dissipation damper realizes graded yielding and has obvious effect of graded yielding energy dissipation, which can not only satisfy the yielding energy dissipation during small earthquakes, but also ensure stable and reliable yielding energy dissipation during large earthquakes.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

1 is a schematic structural diagram of a graded energy dissipation damper provided by an embodiment of the present invention;

2 is a schematic structural diagram of a sliding plate provided by an embodiment of the present invention;

3 is a schematic structural diagram of a wing plate provided by an embodiment of the present invention;

4 is a schematic structural diagram of a first energy-consuming metal plate provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second energy-consuming metal plate provided by an embodiment of the present invention.

Among them, 1-substrate, 2-first energy-consuming part, 21-first energy-consuming metal plate, 3-second energy-consuming part, 31-second energy-consuming metal plate, 4-linear sliding hole, 5- Sliding pin, 6-wing plate, 7-sliding plate, 8-intermediate plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIGS. 1 to 5. FIG. 1 is a schematic structural diagram of a graded energy dissipation damper provided by an embodiment of the present invention; FIG. 2 is a structural schematic diagram of a sliding plate provided by an embodiment of the present invention; FIG. 3 is an embodiment of the present invention. Schematic diagram of the structure of the provided wing plate; FIG. 4 is a schematic diagram of the structure of the first energy-consuming metal plate provided by the embodiment of the present invention; FIG. 5 is a schematic structural diagram of the second energy-consuming metal plate provided by the embodiment of the present invention.

The present invention provides a graded energy dissipation damper, comprising two base plates 1 distributed at intervals and a first yield energy dissipation member 2 and a second yield energy dissipation member 3 installed between the two base plates 1 .

The two base plates 1 are used to connect the construction facilities or sites to be shock-absorbing and anti-seismic. For example, they are fixed between the support columns or embedded parts in the site to be damped by means of fasteners such as bolts. Correspondingly, any one of the base plates 1 can be A plurality of connecting holes are opened for bolts to pass through.

Two ends of the first yield energy dissipating member 2 are respectively fixedly connected to the two substrates 1 , which are equivalent to fixed beams between the two substrates 1 . According to the materials of the first yielding energy dissipating member 2 and the base plate 1 , the two ends of the first yielding energy dissipating member 2 can be fixedly connected by means of welding, fastener locking, interference fitting and the like.

The first end of the second yield energy dissipation member 3 is fixedly connected to one of the substrates 1 , and the second end of the second yield energy dissipation member 3 is oriented and slidably connected to the other substrate 1 .

Based on the different connection relationship between the first yield energy dissipator 2 and the second yield energy dissipator 3, a small earthquake occurs outside and the stress acting on the first yield energy dissipator 2 exceeds the elastic limit σ of the first yield energy dissipator 2 At _e1 , the first yielding energy dissipating member 2 yields and deforms, thereby consuming the energy of the external source. At this time, because one end of the second yield energy dissipation member 3 is oriented and connected to the base plate 1, one end of the second yield energy dissipation member 3 slides relative to the base plate 1, and the energy of the external shock source is not enough to make the second yield dissipation member 3. The second end of the energy element 3 exceeds the sliding constraint range of the base plate 1, so the second yield energy dissipator 3 is in the elastic stage during small earthquakes, and the second yield energy dissipator 3 does not resist external stress through bending deformation.

With the strengthening of the external vibration level, the relative displacement of the two substrates 1 increases, and the sliding range of the second end of the second yield energy dissipation member 3 exceeds the constraint range of the substrate 1. At this time, the two substrates 1 jointly move toward the second yield loss. The energy element 3 applies stress, so that the stress transmitted from the outside to the second yield energy dissipator 3 is greater than the elastic limit σ _e2 of the second yield energy dissipator 3 . That is to say, under the action of moderate earthquake and large earthquake, in addition to the bending deformation of the first yield energy dissipating member 2, the second yield energy dissipating member 3 also enters the yield deformation stage, and consumes the energy of the external source through bending deformation.

To sum up, under the action of small shock, the relative displacement of the two substrates 1 of the graded energy dissipation damper is small, and it can only bend and deform the first yielding The energy consuming member 3 is in an elastic state and does not have the function of shock absorption and energy consumption. Therefore, the first yielding energy dissipating member 2 alone absorbs energy and dissipates energy during small earthquakes. Under the action of medium and large earthquakes, the relative displacement of the two substrates 1 is relatively large, and the second yield energy dissipation member 3 begins to bend and deform to achieve the purpose of yield energy dissipation. At this time, the second yielding energy dissipation member 3 cooperates with the first yielding energy dissipation member 2 to jointly consume seismic energy. Therefore, the graded energy dissipation damper achieves graded yielding, and has an obvious effect of graded yield energy dissipation.

The graded energy dissipation damper provided by the present invention will be further described below with reference to the accompanying drawings and embodiments.

On the basis of the above-mentioned embodiment, one of the second yielding energy dissipation member 3 and the substrate 1 connected to the second yielding energy dissipation member 3 is provided with a linear sliding hole 4 , and the other is connected with a hole for passing through it. Insert the sliding pin 5 into the linear sliding hole 4.

In each embodiment provided by the present invention, the linear sliding hole 4 is provided at the end of the second yielding energy dissipation member 3 , and the sliding pin 5 is mounted on the inner surface of one of the base plates 1 . The two substrates 1 undergo relative displacement along the surface extension direction of any one of the substrates 1, and the substrate 1 provided with the sliding pin 5 slides relative to the end of the second yielding energy dissipating member 3 to prevent the second yielding energy dissipating member 3 from being in small Under the action of earthquake, the yield deformation occurs due to the excessive force, and the graded energy dissipation damper cannot achieve an obvious graded energy dissipation effect.

When a small shock acts, one end of the second yielding energy dissipation member 3 reciprocates relative to the base plate 1 under the cooperative relationship between the sliding pin 5 and the linear sliding hole 4, resulting in that the two base plates 1 are not enough to yield to the second The energy dissipation member 3 exerts a stress greater than the elastic limit σ _e2 . Therefore, the second yielding energy consumer 3 is in the elastic phase in this case. During moderate and large earthquakes, the sliding displacement of the sliding pin 5 in the linear sliding hole 4 reaches the limit of the linear sliding hole 4, and the stress applied by the two base plates 1 to the second yield energy dissipation member 3 is greater than the elastic limit σ _e2 . stress, the second yielding energy dissipating member 3 begins to bend and deform, and consumes seismic energy together with the first yielding energy dissipating member 2 to achieve the effect of obvious staged yielding.

The two substrates 1 can be arranged in parallel, and the longitudinal direction of the linear sliding hole 4 can also be parallel to the surface of any one of the substrates 1 , that is, the longitudinal direction of the linear sliding hole 4 is perpendicular to the normal of any one of the substrates 1 . At this time, the sliding pin shaft 5 slides along the length direction of the linear sliding under the relative displacement of the two base plates 1 , so that the elastic limit σ _e2 corresponding to the second yielding energy dissipation member 3 can be adjusted by controlling the length of the linear sliding hole 4 . source level.

The number and length of the linear sliding holes 4 and the corresponding number and length of the sliding pins 5 can be specifically analyzed and set according to the shear resistance, strength and other parameters of the graded energy dissipation damper.

The number of the linear sliding holes 4 and the sliding pin shafts 5 is multiple. Obviously, the numbers of the two are equal and their positions correspond to each other.

As for the specific arrangement of the linear sliding hole 4 and the sliding pin shaft 5, reference can be made to FIG. 1. In this example, a pair of parallel and spaced apart wing plates 6 are vertically fixed on the inner surface of the base plate 1, and a pair of wing plates 6 is formed in the middle Wide gap; a sliding plate 7 is fixedly connected to the end of the second yield energy dissipation member 3 , and the sliding plate 7 is used to be embedded and slidably connected in the gap formed by a pair of wing plates 6 . Based on the foregoing arrangement, all the linear sliding holes 4 are arranged on the sliding plate 7 , and the two ends of the sliding pin 5 are respectively fixedly connected to a pair of wing plates 6 .

In this embodiment, the sliding pin shaft 5 may specifically adopt high-strength bolts with both ends fixed to a pair of wing plates 6 . All the linear sliding holes 4 are distributed in a rectangular array in the sliding plate 7 . Referring to FIG. 2 , an even number of linear sliding holes 4 may be provided and arranged in parallel and symmetrically on the sliding plate 7 .

The first yielding assembly includes a plurality of first energy dissipating metal plates 21 . All the first energy-consuming metal plates 21 can be connected between the two substrates 1 vertically and at equal intervals. Any adjacent first energy-consuming metal plates 21 are parallel. All the first energy-consuming metal plates 21 consume the energy transmitted by the two substrates 1 under the action of small shocks through bending deformation.

The specific number of the first energy-consuming metal plates 21 can be calculated according to specific conditions such as the bearing capacity and energy consumption of the first yielding energy-consuming member 2 in the engineering example.

For example, the first energy-consuming metal plate 21 can be provided as an X-shaped, diamond-shaped or U-shaped steel plate. Based on the connection relationship between the first energy-consuming metal plate 21 and the two substrates 1 , the cross-sectional dimension of both ends of any one of the first energy-consuming metal plates 21 is larger than the cross-sectional dimension of the middle portion. Referring to FIG. 4 , FIG. 4 is a schematic structural diagram of the first energy-consuming metal plate 21 according to an embodiment of the present invention. The cross-section of the first energy-consuming metal plate 21 at any height along the longitudinal direction is rectangular, and the thickness of the first energy-consuming metal plate 21 is the width of the aforementioned rectangle. The cross-sectional length of the middle part of the energy dissipation metal plate 21 . This structure is suitable for the stress distribution of the first energy-consuming metal plate 21 , and is beneficial to improve the yield energy dissipation effect of the first energy-consuming metal plate 21 .

Similarly, the second yield energy dissipation member 3 may also include a plurality of second energy dissipation metal plates 31 ; the top ends of all the second energy dissipation metal plates 31 are fixedly connected through the intermediate plate 8 . Likewise, the specific number of the second energy-consuming metal plates 31 can be calculated according to specific conditions such as the bearing capacity and energy consumption of the second yielding energy-consuming member 3 in the engineering example.

For the second yielding energy dissipating member 3 with the linear sliding holes 4 at the ends, the ends on the same side of the plurality of second energy dissipation metal plates 31 can be fixedly connected by the horizontally arranged intermediate plate 8, and then the linear sliding holes are provided. 4 or a sliding plate 7 with linear sliding holes 4 is provided.

Any one of the second energy-consuming metal plates 31 is specifically configured as an energy-consuming steel plate. Similarly, the first energy-consuming metal plate 21 involved in the above embodiments can also be made of rigid material.

In order to achieve a better technical effect, please refer to FIG. 1 and FIG. 5 , the cross-sectional dimension of any second energy-consuming metal plate 31 is tapered from one end to the other end, and the intermediate plate 8 is connected to all the second energy-consuming metal plates 31 The smaller end of the cross section.

As a prefabricated whole, the graded energy dissipation damper can be conveniently and quickly applied to engineering cases as a whole, such as being installed in a frame support structure of a shock-absorbing building, or installed in a concrete embedded part. During a small earthquake, the plurality of second energy-consuming metal plates 31 can slide relative to the base plate 1 through the linear sliding holes 4 and the sliding pins 5. Therefore, at this time, all the second energy-consuming metal plates 31 are in the elastic stage, and only a plurality of second energy-consuming metal plates 31 are in the elastic stage. An energy-consuming metal plate 21 consumes seismic energy; during a major earthquake, the sliding range of the plurality of second energy-consuming plates exceeds the constraint range of the linear sliding hole 4 and the sliding pin shaft 5, thus entering the yield stage, and the first energy-consuming metal plate 21 consume the seismic energy together to achieve the effect of obvious staged yield.

The graded energy dissipation damper provided by the present invention has been described in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (6)

1. A graded energy dissipation damper, characterized in that it comprises two substrates (1) distributed at intervals; An energy dissipating member (3); two ends of the first yielding energy dissipating member (2) are respectively fixedly connected to the two substrates (1); one end of the second yielding energy dissipating member (3) is fixedly connected therein One of the base plates (1), the other end of which is oriented and slidably connected to the other base plate (1); The first yielding energy dissipating member (2) includes a plurality of first energy dissipating metal plates (21); the cross-sectional dimension of both ends of any one of the first energy dissipating metal plates (21) is larger than the cross-sectional dimension of the middle portion; The second yield energy dissipation member (3) includes a plurality of second energy dissipation metal plates (31); the top ends of all the second energy dissipation metal plates (31) are fixedly connected by an intermediate plate (8), the intermediate The plate (8) is oriented and slidably connected to the base plate (1) through a linear sliding hole (4); the cross-sectional dimension of any of the second energy-consuming metal plates (31) is tapered from one end to the other end; the middle The plate (8) is connected to the end with the smaller cross-section of all the second energy-consuming metal plates (31); The two substrates (1) are arranged in parallel; the length direction of the linear sliding hole (4) is parallel to the surface of any one of the substrates (1). 2. The graded energy dissipation damper according to claim 1, characterized in that, one of the second yield energy dissipation member (3) and the substrate (1) to which it is connected is provided with a linear sliding The other hole (4) is connected with a sliding pin (5) for penetrating the linear sliding hole (4). 3 . The graded energy dissipation damper according to claim 2 , wherein the number of the linear sliding holes ( 4 ) and the sliding pins ( 5 ) are multiple and equal in number. 4 . 4. The graded energy dissipation damper according to claim 3, characterized in that, a pair of wing plates (6) distributed in parallel and spaced apart are vertically fixed on the inner surface of the base plate (1); the second yield energy dissipation member The end of (3) is fixedly connected with a sliding plate (7) for embedding a pair of the wing plates (6); all the linear sliding holes (4) are arranged on the sliding plate (7); the sliding Two ends of the pin shaft (5) are respectively fixedly connected to a pair of the wing plates (6). 5 . The graded energy dissipation damper according to claim 4 , wherein all the linear sliding holes ( 4 ) are distributed in a rectangular array in the sliding plate ( 7 ). 6 . 6. The graded energy dissipation damper according to claim 1, wherein any of the second energy dissipation metal plates (31) is specifically an energy dissipation steel plate.

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