CN216641012U - Buckling-restrained bellows energy dissipation support device based on ring spring self-reset - Google Patents

Abstract

The utility model relates to a buckling restraint bellows energy dissipation support device based on the self-resetting of ring springs, which comprises an outer sleeve, a high-strength steel ring spring group, a middle sleeve, a bellows and an inner sleeve which are coaxially sleeved from outside to inside in sequence, and an outer sleeve. A pair of outer annular baffles are fixedly connected to the inner wall of the tube, and a pair of inner annular baffles are fixedly connected to the outer wall of the middle sleeve. The high-strength steel ring spring group is arranged between the outer annular baffles. The first end plate extending inward from the end of the outer sleeve forms a through hole for the middle sleeve to pass through, the middle sleeve passes through the through hole of the outer sleeve and is slidably connected with the first end plate, one end of the middle sleeve closes the other end Open, the open end is slidably connected to the inner wall of the outer casing through a second end plate extending outward from the end of the middle casing; one end of the bellows is fixedly connected to the closed end of the middle casing, and the other end is fixed to the outer casing. Closed end, one end of the inner sleeve is fixed on the closed end of the outer sleeve, which has stable and efficient energy dissipation capability and self-reset function.

Description

Buckling-restrained bellows energy dissipation support device based on ring spring self-reset

technical field

The utility model relates to an energy dissipation support device, in particular to a buckling restraint bellows energy dissipation support device based on ring spring self-reset, belonging to the technical field of shock absorption (vibration) and isolation (vibration).

Background technique

With the development of structural passive damping control technology, many types of damping and energy-consuming devices have been developed. The anti-buckling brace is one of the widely used shock absorption devices at present, and its advantages are simple design parameters and low cost. However, the residual displacement of traditional anti-buckling bracing after earthquake is relatively large, which increases the difficulty of structural repair and increases the direct or indirect economic loss. Therefore, the research on anti-buckling bracing with self-resetting function is of great significance.

At present, there are many structural forms of self-resetting anti-buckling bracing, and there are the following problems: the self-resetting anti-buckling bracing using prestressed tendons has insufficient deformation capacity under the action of strong earthquake; shape memory alloy materials are expensive, and need to solve temperature sensitivity, performance Stability and other issues; the stroke provided by the butterfly spring is short, and it has no energy dissipation capacity, and requires a lot of welding work or assembly work; the existing self-reset anti-buckling support structure is complex, the installation process is cumbersome, and due to the consideration of reset performance, the energy consumption performance of the support becomes weaker.

Utility model content

In view of the above problems in the prior art, the present invention provides a self-reset buckling restraint bellows energy dissipation support device based on a ring spring, which has both stable and efficient energy dissipation capability and self-reset function.

In order to solve the above-mentioned problems, the utility model adopts the following technical solutions:

A buckling restraint bellows energy dissipation support device based on the self-resetting of ring springs, comprising an outer sleeve, a high-strength steel ring spring group, a middle sleeve, a bellows and an inner sleeve that are coaxially sleeved in sequence from outside to inside. There is a certain gap between the steel ring spring group and the outer sleeve, an outer annular baffle is fixedly connected to the inner wall of the outer sleeve, and a pair of inner annular baffles are fixedly connected to the outer wall of the middle sleeve. The ring spring group is arranged between a pair of outer annular baffles, the spacing between the pair of inner annular baffles is greater than the spacing between the pair of outer annular baffles, and the inner annular baffles located on the same side are located outside the outer annular baffles One end of the outer sleeve is closed, and the other end forms a through hole for the middle sleeve to pass through through the first end plate extending inward from the end of the outer sleeve, and the middle sleeve passes through the through hole of the outer sleeve and It is slidably connected with the first end plate, one end of the middle sleeve is closed, and the other end is open, and the open end is connected to the outer sleeve through a second end plate extending outward from the end of the middle sleeve. The inner wall of the pipe is slidably connected, and the distance between the first end plate and the second end plate is greater than the distance between the pair of inner annular baffles; one end of the corrugated pipe is fixedly connected to the closed end of the middle sleeve, The other end is fixed to the closed end of the outer sleeve, and one end of the inner sleeve is fixed to the closed end of the outer sleeve.

Preferably, the inner surface of the inner sleeve is spaced with stiffening plates.

Preferably, the pre-pressure of the high-strength steel ring spring group is exerted by a pair of outer annular baffles, and the gap between the high-strength steel ring spring group and a pair of inner annular baffles in the pre-loaded state is equal to the elastic deformation limit of the bellows. .

Specifically, the bellows and the closed end of the middle sleeve are fixedly connected by bolts.

Specifically, the middle sleeve is welded or integrated with the second end plate, and the outer sleeve is welded or integrated with the first end plate.

Preferably, the outer sleeve is formed by splicing two half-sleeves of equal diameter and equal length. The end surfaces of the two half-sleeves of the outer sleeve are welded with splicing pieces, the splicing pieces are assembled by bolts, and the splicing pieces are L-shaped steel or angle steel.

Preferably, both the closed end of the outer casing and the closed end of the middle casing are provided with connecting pieces, and the designed bearing capacity of the connecting pieces is greater than the ultimate bearing capacity of the buckling restraining bellows energy dissipation support device.

Preferably, the material of the outer casing, the middle casing, the inner casing, the inner annular baffle, the outer annular baffle, the first end plate, the second end plate, the splicing piece and the connecting piece are all low-alloy high-strength Q355 steel.

Preferably, the high-strength steel ring spring group adopts 60Si2MnA with a yield strength of 1350MPa, the high-strength steel ring spring group is always in an elastic state during operation, and the elastic deformation recovery of the high-strength steel ring spring group during unloading realizes self-reset.

The utility model has achieved the following technical effects:

The gap between the high-strength steel ring spring group of the high-strength steel ring spring group and a pair of inner annular baffles is equal to the elastic deformation limit of the bellows under the preloaded state of the buckling restraint bellows energy dissipation support device based on the self-resetting of the ring spring, which can realize the elastic deformation limit of the bellows. Under the action of earthquake, the energy is dissipated by the elastic deformation of the bellows, the gap is not closed, and the high-strength steel ring spring group does not start; under the action of the design earthquake, the bellows dissipates energy through elastic-plastic deformation, the gap is closed, and the high-strength steel ring spring The group starts to play the reset function, and the friction between the inner and outer rings of the high-strength steel ring spring group assists energy dissipation, which can realize multi-level and various energy consumption methods.

Due to the prestressing applied to the high-strength steel ring spring group in the present application, the high-strength steel ring spring group is in a compressed state under the action of tensile and compressive loads, and plays a self-resetting role. In the compressed state, the friction between the inner and outer ring contact surfaces of the high-strength steel ring spring group can also play a role in energy dissipation, which greatly enhances the energy dissipation capacity of the support.

Longitudinal stiffeners are arranged on the inner wall of the inner casing to prevent the buckling of the inner casing; the telescopic structure, the inner casing and the middle casing provide lateral restraints for the bellows to prevent the bellows from buckling, which can realize the elastic deformation of the bellows. Plastic deformation consumes energy; a high-strength steel ring spring group is used as the reset device for the energy-dissipating support, and assists energy dissipation.

The design bearing capacity of the connector of the present application should be greater than the ultimate bearing capacity of the self-resetting buckling constraint bellows energy-dissipating support, so as to keep the connector elastic, prevent the connector from yielding in advance, and ensure the self-resetting buckling constraint bellows energy-dissipating support. normal work.

All sleeves, end plates and connectors in this application are made of low-alloy high-strength Q355 steel; the high-strength steel ring spring group adopts 60Si2MnA with a yield strength of 1350MPa to ensure that the high-strength steel ring spring group is always in an elastic state during operation , to ensure the elastic deformation recovery of the high-strength steel ring spring group during unloading to achieve self-reset.

Description of drawings

In order to introduce the scheme of the present utility model more clearly, the required accompanying drawings of the scheme are briefly introduced below:

FIG. 1 is a schematic structural diagram of the present application.

FIG. 2 is an A-A sectional view of FIG. 1 of the present application.

Figure 3 is a first view of the present application.

FIG. 4 is a second view of the present application.

FIG. 5 is a pressure state diagram of the present application.

FIG. 6 is a tension state diagram of the present application.

FIG. 7 is a schematic diagram of the assembly process of the present application.

FIG. 8 is a B-B sectional view of FIG. 7 of the present application.

FIG. 9 is a C-C sectional view of FIG. 7 of the present application.

In the figure: 1. Outer casing; 2. Middle casing; 3. Inner casing; 4. Corrugated pipe; 5. Inner annular baffle; 6. Outer annular baffle; 7. First circular end plate; 8. 9. The first end plate; 10. The second end plate; 11. The high-strength steel ring spring group; 12. The connecting piece; 13. The splicing piece; Wherein: 5a, the first inner annular baffle; 5b, the second inner annular baffle; 6a, the first outer annular baffle; 6b, the second outer annular baffle; 11a, the inner ring; 11b, the outer ring; 12a, a first connector; 12b, a second connector.

Detailed ways

The technical solutions of the present invention will be further described below through the accompanying drawings and specific embodiments.

Referring to Figures 1 to 4, a buckling restraint bellows energy dissipation support device based on the self-resetting of ring springs includes an outer casing 1, a high-strength steel ring spring group 11, a middle casing 2, The bellows 4 and the inner sleeve 3, the telescopic structure, the inner sleeve and the middle sleeve provide lateral restraint for the bellows, prevent the bellows from buckling, and can utilize the elastic-plastic deformation of the bellows to consume energy. A certain gap is left between the high-strength steel ring spring group 11 and the outer sleeve 1, and the outer sleeve 1 is formed by splicing two half-sleeves of equal diameter and equal length. The group 11 applies pre-pressure, the pre-pressure of the high-strength steel ring spring group 11 is applied by a pair of outer annular baffles 6 (ie the first outer annular baffle 6a and the second outer annular baffle 6b), and the high-strength steel ring spring group 11 is pre-pressured In this state, the gap between a pair of inner annular baffles 5 (ie, the first inner annular baffle 5a and the second inner annular baffle 5b) is equal to the elastic deformation limit of the bellows 4, and the high-strength steel ring spring group is preloaded The gap between it and a pair of inner annular baffles is equal to the elastic deformation limit of the bellows, so that energy consumption can be realized by relying on the elastic deformation of the bellows under the action of frequent earthquakes, the gap is not closed, and the high-strength steel ring spring The group does not start; under the design earthquake, the bellows dissipates energy through elastic-plastic deformation, the gap is closed, the high-strength steel ring spring group starts to play the reset function, and the friction between the inner and outer rings of the high-strength steel ring spring group assists the dissipation of energy. It can realize multi-level and various energy consumption methods. And because the high-strength steel ring spring group is prestressed, as shown in Figure 5 and Figure 6, the high-strength steel ring spring group is in a state of compression under the action of tension and compression loads, which plays a self-resetting role. In the compressed state, the friction between the inner and outer ring contact surfaces of the high-strength steel ring spring group can also play a role in energy dissipation, which greatly enhances the energy dissipation capacity of the support. An outer annular baffle 6 is fixedly connected to the inner wall of the outer sleeve 1, a pair of inner annular baffles 5 are fixedly connected to the outer wall of the middle sleeve 2, and the high-strength steel ring spring group 11 is arranged on an outer annular baffle. Between the plates 6, the spacing between the pair of inner annular baffles 5 is greater than the spacing between the pair of outer annular baffles 6, and the inner annular baffle 5 on the same side is located outside the outer annular baffle 6, and the outer One end of the tube 1 is closed, and can be closed by a second circular end plate 8 with a diameter equal to that of the outer sleeve, and the other end is formed by the first end plate 9 extending inward from the end of the outer sleeve 1 to form a passage for the middle sleeve 2 to pass through. The middle sleeve 2 passes through the through hole of the outer sleeve 1 and is slidably connected to the first end plate 9. One end of the middle sleeve 2 is closed, and a first circle with a diameter equal to that of the outer sleeve can be used. The end plate 7 is closed, and the other end is open. The open end is slidably connected to the inner wall of the outer sleeve 1 through a second end plate 10 extending outward from the end of the middle sleeve 2. The first end plate The distance between 9 and the second end plate 10 is greater than the distance between the pair of inner annular baffles 5; one end of the bellows 4 is fixedly connected to the closed end of the middle sleeve 2, and the other end is fixed to the closed end of the middle sleeve 2. The closed end of the outer sleeve 1, one end of the inner sleeve 3 is fixed on the closed end of the outer sleeve 1, the closed end of the outer sleeve 1 and the closed end of the middle sleeve 2 are provided with a connector 12 ( That is, the first connecting piece 12a at the closed end of the middle casing 2; the second connecting piece 12b at the closed end of the outer casing 1), the designed bearing capacity of the connecting piece should be greater than the ultimate bearing capacity of the self-reset buckling restraint bellows energy dissipation support It can maintain the elasticity of the connecting parts, prevent the parts of the connecting parts from yielding in advance, and ensure the normal operation of the self-reset buckling restraint bellows energy dissipation support. In order to prevent the inner sleeve from buckling, the inner surface of the inner sleeve 3 is provided with stiffening plates 15 at longitudinal intervals.

The working process of the buckling restraint bellows energy dissipation support device based on the self-resetting of the ring spring is shown in Figure 5 and Figure 6. Figure 5 shows that the external load applied is pressure. Under the action of external pressure, when the pressure is small, the inner sleeve The tube 3 and the middle casing 2 slide relative to each other, that is, the middle casing 2 moves to the right relative to the outer casing 1, which drives the bellows 4 to elastically compress and deform; when the pressure increases, the first inner annular baffle 5a on the left side and the high-strength After the gap of the inner ring 11a of the steel ring spring group 11 is closed, the bellows 4 undergoes compressive elastic-plastic deformation to dissipate the seismic energy, and the middle casing 2 drives the left first inner ring baffle 5a to push the high-strength steel ring spring to the right. At the same time, the second outer annular baffle 6b on the right side will restrict the rightward movement of the high-strength steel ring spring group 11, so that the high-strength steel ring spring group 10 compresses to generate a restoring force, and passes through the inner ring 11a of the high-strength steel ring spring group 11. Friction with the outer ring 11b assists energy dissipation.

Figure 6 shows that the applied external load is a tensile force. Under the action of the external tensile force, when the tensile force is small, the inner casing 3 and the middle casing 2 slide relative to each other, that is, the middle casing 2 moves to the left relative to the outer casing 1, driving the The bellows 4 is elastically stretched and deformed; when the tensile force increases and the elastic stretched deformation of the bellows 4 reaches its deformation limit, the second inner annular baffle 5b on the right side and the inner ring 11a of the high-strength steel ring spring group 11 After the gap is closed, the bellows 4 undergoes tensile elastic-plastic deformation to dissipate the seismic energy, and the middle casing 2 drives the second inner annular baffle 5b on the right to push the high-strength steel ring spring group 11 to the left. The annular baffle 6a restricts the leftward movement of the high-strength steel ring spring group 11, compresses the high-strength steel ring spring group 11 to generate a restoring force, and assists energy dissipation through friction between the inner ring 11a and the outer ring 11b of the high-strength steel ring spring group 11.

In this embodiment, the bellows 4 and the closed end of the middle sleeve 2 are fixedly connected by bolts. The middle sleeve 2 is welded or integrated with the second end plate 10 , and the outer sleeve 1 is welded or integrated with the first end plate 9 . The end surfaces of the two half-sleeves of the outer casing 1 are welded with a splicing piece 13, the splicing piece 13 is assembled by bolts, and the splicing piece 13 is L-shaped steel or angle steel.

In this embodiment, the designed bearing capacity of the connecting member 12 is greater than the ultimate bearing capacity of the buckling restraint corrugated pipe energy dissipation support device. The design bearing capacity of the connector should be greater than the ultimate bearing capacity of the self-resetting buckling restraint bellows energy-dissipating support, so that the connecting parts remain elastic, prevent the connector from yielding in advance, and ensure the normal operation of the self-resetting buckling restraint bellows energy-dissipating support. The materials of the outer casing 1, the middle casing 2, the inner casing 3, the inner annular baffle 5, the outer annular baffle 6, the first end plate 9, the second end plate 10, the splicing piece 13 and the connecting piece 12 are all low Alloy high strength Q355 steel. The high-strength steel ring spring group 11 adopts 60Si2MnA with a yield strength of 1350MPa, which can ensure that the high-strength steel ring spring group 11 is always in an elastic state during operation, and the elastic deformation recovery of the high-strength steel ring spring group 11 realizes self-reset during unloading.

The manufacturing method of the buckling restraint bellows energy dissipation support device based on the self-resetting of the ring spring, see Figure 7 to Figure 9. Step 1: Assemble and pre-compress the high-strength steel ring spring group: set the high-strength steel ring spring group 11 in the middle casing 2; a pair of inner annular baffles 5 are respectively installed on both ends of the high-strength steel ring spring group 11, and are connected to the inner sleeve 2 by welding; a pair of outer annular baffles 6 are respectively connected with the two half sleeves of the outer sleeve 1 The inner wall of the pipe is connected by welding, and the splicing piece 13 is welded and connected with the outer walls of the two half casings of the outer casing 1 respectively, and then the bolts (14) are passed through the reserved holes on the splicing piece 13, so that the two half casings are spliced together, Simultaneously preload the high-strength steel ring spring group 11; Step 2: Weld the first end plate 9 and the second end plate 10, weld the first end plate 9 on the end of the inner wall of the first end of the outer casing 1, and weld the second end plate 9 on the inner casing 2. The second end plate 10 is welded to the end of the outer wall of the end; Step 3: Weld a circular end plate to the inner wall of the first end of the middle sleeve 2 to form the closed end of the middle sleeve 2, and weld the circular end plate to the inner wall of the second end of the outer sleeve 1 The closed ends of the outer casing 1 are formed, and the connecting pieces 12 are welded at the two closed ends respectively; in step 4, the bellows 4 is passed through the open end of the middle casing 2, and the inner casing 3 is passed through the bellows 4; The first end of the bellows 4 is connected with the closed end of the middle casing 2 by bolts 14; The connecting pieces 12 are welded to the outer wall surfaces of the closed ends of the middle sleeve 2 and the outer sleeve 1 respectively. The support process uses less welding and bolt connection, which simplifies the transfer process and reduces the difficulty of installation. Compared with the existing self-resetting and anti-buckling support structure, the high-strength steel ring spring group used in this application has The price is low, the low cost is realized, and the technical effect of stable and efficient energy consumption capability and self-reset function is achieved at the same time.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. The changes or replacements should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a bucking restraint bellows power consumption strutting arrangement based on ring spring is from restoring to throne which characterized in that: comprises an outer sleeve (1), a high-strength steel ring spring group (11), a middle sleeve (2), a corrugated pipe (4) and an inner sleeve (3) which are sequentially sleeved from outside to inside, wherein a certain gap is reserved between the high-strength steel ring spring group (11) and the outer sleeve (1), a pair of outer annular baffles (6) is fixedly connected on the inner wall of the outer sleeve (1), a pair of inner annular baffles (5) are fixedly connected on the outer wall of the middle sleeve (2), the high-strength steel ring spring group (11) is arranged between the pair of outer annular baffles (6), the distance between the pair of inner annular baffles (5) is greater than the distance between the pair of outer annular baffles (6), the inner annular baffles (5) positioned at the same side are positioned at the outer side of the outer annular baffles (6), one end of the outer sleeve (1) is sealed, and the other end of the outer sleeve (1) forms a through hole for the middle sleeve (2) to pass through a first end plate (9) which extends inwards from the end part of the outer sleeve (1), the middle sleeve (2) penetrates through the through hole of the outer sleeve (1) and is in sliding connection with the first end plate (9), one end of the middle sleeve (2) is closed, the other end of the middle sleeve is open, the open end is in sliding connection with the inner wall of the outer sleeve (1) through a second end plate (10) extending outwards from the end part of the middle sleeve (2), and the distance between the first end plate (9) and the second end plate (10) is larger than the distance between the pair of inner annular baffles (5); one end of the corrugated pipe (4) is fixedly connected with the closed end of the middle sleeve (2), the other end of the corrugated pipe is fixed at the closed end of the outer sleeve (1), and one end of the inner sleeve (3) is fixed at the closed end of the outer sleeve (1).

2. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device as claimed in claim 1, wherein: stiffening plates (15) are arranged on the inner surface of the inner sleeve (3) at intervals.

3. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device as claimed in claim 1, wherein: and the clearance between the high-strength steel ring spring group (11) and the pair of inner annular baffles (5) in a prepressing state is equal to the elastic deformation limit of the corrugated pipe (4).

4. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device as claimed in claim 1, wherein: the corrugated pipe (4) is fixedly connected with the closed end of the middle sleeve (2) through a bolt.

5. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device as claimed in claim 1, wherein: the middle sleeve (2) and the second end plate (10) are welded or integrally arranged, and the outer sleeve (1) and the first end plate (9) are welded or integrally arranged.

6. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device of claim 5, wherein: the outer sleeve (1) is formed by splicing two half sleeves with equal diameter and equal length.

7. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device of claim 6, wherein: splicing pieces (13) are welded on the end surfaces of the two half sleeves of the outer sleeve (1), the splicing pieces (13) are spliced through bolts, and the splicing pieces (13) are L-shaped steel or angle steel.

8. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device of claim 6, wherein: the closed end of the outer sleeve (1) and the closed end of the middle sleeve (2) are both provided with a connecting piece (12), and the design bearing capacity of the connecting piece (12) is larger than the limit bearing capacity of the buckling restrained corrugated pipe energy dissipation supporting device.

9. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device of claim 6, wherein: the outer sleeve (1), the middle sleeve (2), the inner sleeve (3), the inner annular baffle (5), the outer annular baffle (6), the first end plate (9), the second end plate (10), the splicing piece (13) and the connecting piece (12) are made of low-alloy high-strength Q355 steel.

10. The ring-spring-based self-resetting buckling-restrained corrugated pipe energy-consuming supporting device as claimed in claim 1, wherein: the high-strength steel ring spring group (11) adopts 60Si2MnA with the yield strength of 1350 MPa.

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