Fabricated buckling-restrained brace

Abstract

The utility model discloses an assembly type buckling-restrained brace which comprises a cross-shaped steel plate, an outer restraining sleeve arranged on the periphery of the cross-shaped steel plate in a sleeved mode and end plates connected to the two ends of the outer restraining sleeve, and at least one end plate is provided with a cross-shaped open hole for the cross-shaped steel plate to penetrate through. The cross-shaped steel plate comprises a friction section and a buckling energy dissipation section, and the cross section size of the buckling energy dissipation section is smaller than the cross section size of other parts of the cross-shaped steel plate. The friction section is provided with a friction energy dissipation structure, the friction energy dissipation structure at least comprises a friction plate attached to the friction section, and the friction plate and the friction section move relatively in the length direction of the cross-shaped steel plate to achieve friction energy dissipation. Fixed-point yield is achieved by arranging the friction section and the buckling energy dissipation section on the cross-shaped steel plate, specifically, the friction energy dissipation structure is arranged on the friction section to guarantee that the cross-shaped steel plate is not damaged, and the friction energy dissipation effect of the device during small earthquakes is achieved.

Description

Technical Field

[0001] The utility model relates to an anti-buckling support component, in particular to an assembled anti-buckling support. Background Art

[0002] like Figure 1 As shown, it is an anti-buckling support in the prior art, which includes an inner core steel core and an outer restraint sleeve, wherein the inner core steel core and the outer restraint sleeve are isolated by non-bonded isolation material, and the anti-buckling function is achieved by connecting the inner core steel core and the outer restraint sleeve structure. Its function is to dissipate energy when the core unit buckles, so as to protect the main structure under earthquake, but there is a problem of self-weight, and, under the action of small earthquakes, it can only provide stiffness for the structure, and only play the role of shock absorber in medium and large earthquakes. The energy of the input structure is usually dissipated by deformation and destruction of the supporting members. The energy dissipation form adopted is single, and the energy dissipation mechanism is unique. At the same time, since the connection section is mostly connected to the node plate by welding or bolts, when subjected to eccentric loads, the connection section is very easy to be damaged.

[0003] In order to solve the above problems, the prior art provides a self-resetting anti-buckling support device with replaceable energy-consuming sections. The publication number of the scheme is: CN 114351887A. Figure 2 As shown, it includes an elastic support section and a buckling energy dissipation section, the buckling energy dissipation section is arranged in the middle, and the elastic support sections at both ends are symmetrical components. The defect of this technical solution is that the anti-buckling support does not dissipate energy under small earthquakes but only provides stiffness, and only the main structure dissipates energy, which has an adverse effect on the main structure.

[0004] like Figure 3 As shown, a multi-energy dissipation all-steel buckling-resistance support integrating friction energy dissipation mechanism is provided in the prior art, and the publication number is: CN202 210888094.5. A bolt hole 1 is provided through the left wall of the inner circular steel pipe, and a bolt hole 2 is provided through the inner friction plate; an outer square steel pipe is arranged outside the inner circular steel pipe, and a filling rubber is arranged between the outer square steel pipe and the inner circular steel pipe, and a friction rubber is arranged between the inner friction plate and the inner circular steel pipe; a locking nut is installed at the end of the high-strength bolt, and the locking nut is located on the inner side of the inner friction plate. The utility model is an all-steel buckling-resistance support with a multi-energy dissipation system, which realizes energy dissipation through the tensile and compressive deformation of the cross inner core, the friction force of the end friction plate and the friction force of the filling rubber. The defect of this technical solution is that the device needs grouting, resulting in a large deadweight and easy cracking of the concrete. At the same time, the core unit is large in size and there are many welding points, which leads to large initial defects of the buckling-resistance support and easy instability.

[0005] Therefore, there is an urgent need for an anti-buckling support that can solve the problem of limited application scope. Utility Model Content

[0006] In view of the problems of limited application scope and poor structural stability in the prior art, the utility model provides an assembled anti-buckling support, which weakens part of the core unit by arranging friction sections and buckling energy dissipation sections on the cross steel plate, thereby achieving fixed-point yielding and ensuring the safety of the core unit ends, and specifically arranging a friction energy dissipation structure on the friction section to achieve the friction energy dissipation effect of the device during small earthquakes; at the same time, the anti-buckling support ensures the integrity and stability of the device by arranging the structure of the external constraint sleeve and the end plate; specifically, in the utility model, the friction energy dissipation structure adopts friction plates in the length direction of the cross steel plate to dissipate energy.

[0007] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0008] An assembled anti-buckling support comprises a cross steel plate, an outer constraint sleeve sleeved on the outer periphery of the cross steel plate, and end plates connected to both ends of the outer constraint sleeve, at least one of the end plates is provided with a cross-shaped opening for the cross steel plate to pass through; the cross steel plate comprises a friction section and a buckling energy dissipation section, the cross-sectional size of the buckling energy dissipation section is smaller than the cross-sectional size of other parts of the cross steel plate; a friction energy dissipation structure is provided on the friction section, the friction energy dissipation structure comprises at least a friction plate fitted with the friction section, and the friction plate and the friction section undergo relative movement in the length direction of the cross steel plate to achieve friction energy dissipation.

[0009] Furthermore, the friction energy dissipation structure also includes a fastening plate and a connecting piece, the fastening plate is fixed to the friction segment via the connecting piece, the friction plate is located between the fastening plate and the friction segment, and a side of the friction plate facing away from the friction segment is in contact with the fastening plate.

[0010] Furthermore, the cross steel plate is provided with a strip groove, and the length direction of the strip groove is the same as the length direction of the cross steel plate; the connecting piece is passed through the strip groove and can slide in the strip groove.

[0011] Furthermore, the friction plates and fastening plates are provided on both sides of the four wing plates of the friction section, and the wing plate and the two friction plates and two fastening plates located on both sides of the wing plate are fixed by using the same connecting piece.

[0012] Furthermore, the buckling energy dissipation section is located in the middle of the cross steel plate, and the friction section is located at both ends of the cross steel plate.

[0013] Furthermore, an elastic block is bonded to the transition portion from the friction section to the buckling energy dissipation section.

[0014] Furthermore, it also includes a hollow steel pipe with two ends respectively connected to a pair of end plates, and the hollow steel pipe is in contact with the elastic block.

[0015] Furthermore, prestressed tendons are inserted into the hollow steel pipe, and two ends of the prestressed tendons are fixed on two end plates.

[0016] Furthermore, a viscous damper is connected to one of the end plates.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] 1. The utility model provides an assembled anti-buckling support, which realizes fixed-point yielding by arranging friction sections and buckling energy-dissipating sections on the cross steel plate, and specifically achieves the effect of fixed-point yielding by partially weakening the buckling section and ensuring that the end of the cross steel plate is not damaged, and realizes the friction energy-dissipating effect of the device during small earthquakes through the friction energy-dissipating structure; at the same time, the anti-buckling support ensures the integrity and stability of the device by arranging the structure of the external constraint sleeve and the end plate; specifically, in the utility model, the friction energy-dissipating structure adopts friction plates in the length direction of the cross steel plate to dissipate energy.

[0019] 2. The utility model provides an assembled anti-buckling support, which further ensures the radial friction energy dissipation effect of the friction energy dissipation structure by means of the arrangement of the fastening plate pressing the friction plate.

[0020] 3. The utility model provides an assembled anti-buckling support, which ensures the friction sliding effect by setting the strip grooves to ensure the assembly of the structure. At the same time, by setting the friction energy dissipation structure on both sides of the wing plate, the complete friction energy dissipation effect of the cross steel plate in the circumferential direction is ensured.

[0021] 5. The utility model provides an assembled anti-buckling support, which realizes fixed-point yielding through a buckling energy dissipation section, and at the same time achieves a shear energy dissipation effect by bonding an elastic block structure to the buckling energy dissipation section.

[0022] 6. The utility model provides an assembled anti-buckling support, which realizes elastic friction fit by fitting the buckling energy dissipation section and the hollow steel pipe, further realizes the shear energy dissipation effect, improves the shear energy dissipation efficiency, and ensures the working effect of the anti-buckling support during small earthquakes; at the same time, the elastic block is connected to the cross steel plate by adhesive bonding, which facilitates operation and saves working time, and has good economic benefits.

[0023] 7. The utility model provides an assembled anti-buckling support, which ensures the self-resetting effect of the anti-buckling support after an earthquake through the structural setting of hollow steel pipes and prestressed tendons, allowing the anti-buckling support to achieve a staged yielding effect.

[0024] 8. The utility model provides an assembled anti-buckling support, which adopts a viscous damper to dissipate energy under small earthquakes through piston rod movement and extrusion, further ensuring the energy dissipation efficiency of the anti-buckling support in various application scenarios and improving the tensile strength of the anti-buckling support. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A combination method of anti-buckling braces provided as background technology;

[0027] Figure 2 A schematic diagram of the overall structure of a self-resetting anti-buckling support device with replaceable energy-consuming sections provided as background technology;

[0028] Figure 3 A cross-sectional view of a multi-energy dissipation all-steel buckling-restrained brace integrating a friction energy dissipation mechanism provided as background technology;

[0029] Figure 4 A partial structural exploded schematic diagram of an assembled buckling-restrained brace provided in an embodiment of the utility model;

[0030] Figure 5 A schematic diagram of the overall structure of an assembled buckling-restrained support provided in an embodiment of the utility model;

[0031] Figure 6 A schematic diagram of a friction energy dissipation structure of an assembled buckling-restrained brace provided in an embodiment of the utility model;

[0032] Figure 7 A schematic diagram of a viscous damper of an assembled buckling-restrained support provided by an embodiment of the utility model;

[0033] Figure 8 A schematic structural diagram of a cross steel plate of an assembled buckling-restrained support provided in an embodiment of the utility model.

[0034] Explanation of the reference numerals: 1. cross steel plate; 11. friction section; 12. buckling energy dissipation section; 21. friction plate; 211. strip groove; 22. fastening plate; 23. first bolt; 3. elastic block; 4. viscous damper; 5. external constraint sleeve; 6. first end plate; 7. second end plate; 8. hollow steel pipe; 9. prestressed tendon; 91. second bolt. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. As those skilled in the art can appreciate, the described embodiments can be modified in various ways without departing from the spirit or scope of the utility model. Therefore, the drawings and descriptions are considered to be illustrative in nature and not restrictive.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0039] like Figure 4 As shown, the utility model discloses an assembled anti-buckling support, including a composite buckling restraint support and a viscous damper 4.

[0040] The composite buckling restraint support includes a cross steel plate 1, an external restraint sleeve 5, a first end plate 6, and a second end plate 7; the cross section of the cross steel plate 1 is a cross-shaped structure, the cross steel plate 1 is a strip-shaped steel member with a certain length, the external restraint sleeve 5 is sleeved on the outer periphery of the cross steel plate 1, the first end plate 6 and the second end plate 7 are connected to the two ends of the external restraint sleeve 5, one end of the cross steel plate 1 passes through the first end plate 6, and the other end of the cross steel plate 1 is fixed on the second end plate 7.

[0041] In some embodiments, the cross steel plate 1 includes a friction section 11 and a buckling energy dissipation section 12, and the cross-sectional size of the buckling energy dissipation section 12 is smaller than the cross-sectional size of other parts of the cross steel plate 1. In this embodiment, the buckling energy dissipation section 12 is located in the middle of the cross steel plate 1, and the friction section 11 is located at both ends of the cross steel plate 1 to achieve a fixed-point yield effect.

[0042] In some embodiments, Figure 8 As shown, the friction section 11 includes four mutually perpendicular wing plates, and a friction energy dissipation structure is provided on opposite sides of each wing plate. The friction energy dissipation structure includes a friction plate 21, a fastening plate 22 and a first bolt 23; the friction plate 21 is in contact with the surface of the wing plate of the friction section 11, and the fastening plate 22 is fixed to the wing plate of the friction section 11 by the first bolt 23. The friction plate 21 is located between the fastening plate 22 and the wing plate of the friction section 11, and the side of the friction plate 21 facing away from the friction section 11 is in contact with the fastening plate 22, and the fastening plate 22 is fixed to the wing plate of the friction section 11 by a connecting piece. When the cross steel plate 1 vibrates, the connecting piece drives the fastening plate 22 to generate relative movement on the friction plate 11 to achieve friction energy dissipation. The setting of the fastening plate 22 pressing the friction plate 21 further ensures the radial friction energy dissipation effect of the friction energy dissipation structure.

[0043] In some embodiments, Figure 6 As shown, the wing plate and the fastening plate 22 of the cross steel plate 1 are provided with through holes corresponding to the positions, and the first bolt 23 is connected to the two through holes to fix the fastening plate 22 and the cross steel plate 1. The friction plate 21 is provided with a strip groove 211, and the length direction of the strip groove 211 is the same as the length direction of the cross steel plate 1. The first bolt 23 passes through the strip groove 211, so that the first bolt 23 can drive the friction section 11 of the cross steel plate 1 and the fastening plate 22 to slide on the friction plate 21 to achieve friction energy consumption.

[0044] Specifically, the wing plate and the two friction plates 21 and the two fastening plates 22 located on both sides of the wing plate are fixed by the same first bolt 23. Such a configuration has the advantages of simple structure and convenient installation.

[0045] In some embodiments, an elastic block 3 is bonded to the buckling energy dissipation section 12, and the elastic block 3 can be elastically deformed with the bending of the buckling energy dissipation section 12, thereby achieving buckling energy dissipation. Usually, because the buckling energy dissipation section 12 is provided with a transition portion between the buckling energy dissipation section 12 and the friction section 11, a trapezoidal elastic block 3 is used in this embodiment, and the thickness of the trapezoidal elastic block 3 is greater than the thickness of the wing plate of the cross steel plate 1 at the connection, and the two side walls of the elastic block 3 are in close contact with the self-resetting structure, which can achieve the energy dissipation effect under medium and large earthquakes.

[0046] In some embodiments, the composite buckling restraint support further includes a self-resetting structure, which includes a hollow steel tube 8. It includes four hollow steel tubes 8, the length direction of the four hollow steel tubes 8 is aligned with the cross steel plate 1, the hollow steel tubes 8 are located between two adjacent wing plates of the cross steel plate 1, and the four hollow steel tubes 8 are located inside the outer restraint sleeve 5. The outer wall of the hollow steel tube 8 is in contact with the adjacent elastic block 3. Such an arrangement realizes elastic friction fit, further realizes the shear energy dissipation effect, improves the shear energy dissipation efficiency, and ensures the working effect of the buckling restraint support during small earthquakes; at the same time, the elastic block 3 is connected to the cross steel plate 1 by adhesive bonding, which is convenient for operation and saves working time, and has good economic benefits.

[0047] In some embodiments, a prestressed tendon 9 is inserted into the hollow steel tube 8. The prestressed tendon 9 is specifically a steel strand with SMA memory alloy. Both ends of the prestressed tendon 9 are respectively fixed to the first end plate 6 and the second end plate 7 by second bolts 91. The structural arrangement of the hollow steel tube 8 and the prestressed tendon 9 ensures the self-resetting effect of the anti-buckling brace after an earthquake, so that the anti-buckling brace can achieve a staged yielding effect.

[0048] In some embodiments, the first end plate 6 is connected to the end of the beam-column structure, and is connected to the connecting plate on the beam-column structure by bolts. The first end plate 6 is provided with four bolt through holes, which are convenient for connecting with the prestressed tendons 9 and the hollow steel pipe 8. At the same time, the first end plate 6 is connected to one end of the outer restraining sleeve 5, and the first end plate 6 has a cross-shaped opening, so that the cross steel plate 1 can pass through the first end plate 6.

[0049] In some embodiments, the outer constraint sleeve 5 is an outer constraint steel pipe; the first end plate 6 and the second end plate 7 are rectangular steel plate structures.

[0050] In some embodiments, Figures 4 to 5 As shown, the structure of the second end plate 7 is the same as that of the first end plate 6. One end of the second end plate 7 is welded to the cross steel plate 1, and the other end of the second end plate 7 is bolted to the viscous damper 4. Figure 7 As shown, the viscous damper 4 is a common liquid viscous damper 4, which consumes energy by squeezing the oil in the cylinder by the piston.

[0051] In some embodiments, four groups of self-resetting structures are provided, the prestressed tendons 9 are provided at the middle position of the angle, and the four groups of self-resetting structure rectangular arrays are provided on the second end plate 7. The four groups of self-resetting structures can play an effective supporting role in the anti-buckling support provided by the utility model. At the same time, the stability of the structure is ensured by the setting of the four groups.

[0052] The assembly sequence of this assembled anti-buckling support is: install the elastic block 3 on the buckling energy dissipation section 12 of the cross steel plate 1, install the friction energy dissipation structure on the friction section 11 of the cross steel plate 1, and then install four hollow steel tubes 8, then stretch the prestressed tendons 9 on the four hollow steel tubes 8, fix the second end plate 7 to one end of the prestressed tendons 9, then set the external constraint sleeve on the outer periphery of the cross steel plate 1 and the four hollow steel tubes 8, and finally install the first end plate 6.

[0053] In summary, the assembled anti-buckling support provided by the embodiment of the utility model, under small earthquakes, the viscous damper 4 consumes energy by squeezing the oil through the movement of the piston rod, and the first bolt 23 drives the cross steel plate 1 and the fastening plate 22 to consume energy by friction on the friction plate 21; under medium and large earthquakes, the buckling energy-consuming section 12 of the cross steel plate 1 bends to achieve buckling energy consumption, and at the same time, the elastic block 3 bonded to the buckling energy-consuming section 12 is sheared and then consumes energy. After the earthquake, the prestressed tendons 9 in the hollow steel pipe 8 can play a self-reset effect. Under small earthquakes, the friction energy of the friction plate 21 and the shear energy of the elastic block 3 can be consumed. The installation is basically more convenient through bolt connection, which can speed up the construction speed and reduce the construction difficulty. It can reduce the self-weight and construction difficulty without concrete pouring, and can reduce the self-weight and construction difficulty. Through bolt assembly connection, it is guaranteed that the factory can directly manufacture components, reducing the impact of initial defects on the mechanical properties of BRB. It can also ensure that the entire length of the inner core is constrained to prevent it from being damaged at the end connection part, and at the same time, it can play a self-reset effect after the earthquake.

[0054] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0055] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. Other different forms of changes or modifications can also be made on the basis of the above description. It is not necessary and impossible to list all the implementation modes here. The obvious changes or modifications derived therefrom are still within the protection scope of the invention of the utility model.

Claims

1. An assembled buckling-resistance brace, characterized in that: The invention comprises a cross steel plate (1), an outer restraining sleeve (5) sleeved on the outer periphery of the cross steel plate (1), and end plates connected to the two ends of the outer restraining sleeve (5), at least one of the end plates is provided with a cross-shaped opening for the cross steel plate (1) to pass through; the cross steel plate (1) comprises a friction section (11) and a buckling energy dissipation section (12), the cross-sectional dimensions of the buckling energy dissipation section (12) being smaller than the cross-sectional dimensions of other parts of the cross steel plate (1); a friction energy dissipation structure is provided on the friction section (11), the friction energy dissipation structure at least comprising a friction plate (21) fitted with the friction section (11), the friction plate (21) and the friction section (11) undergoing relative motion in the length direction of the cross steel plate (1) to achieve friction energy dissipation.

2. The assembled buckling-resistance brace according to claim 1, characterized in that: The friction energy dissipation structure also includes a fastening plate (22) and a connecting piece, wherein the fastening plate (22) is fixed to the friction segment (11) via the connecting piece, the friction plate (21) is located between the fastening plate (22) and the friction segment (11), and a side surface of the friction plate (21) facing away from the friction segment (11) is in contact with the fastening plate (22).

3. The assembled buckling-resistance brace according to claim 2, characterized in that: The cross steel plate (1) is provided with a strip groove (211), the length direction of the strip groove (211) being the same as the length direction of the cross steel plate (1); the connecting piece is passed through the strip groove (211) and can slide in the strip groove (211).

4. The assembled buckling-resistance brace according to claim 2, characterized in that: The friction plates (21) and the fastening plates (22) are provided on both sides of the four wing plates of the friction section (11); the wing plate and the two friction plates (21) and the two fastening plates (22) located on both sides of the wing plate are fixed by the same connecting piece.

5. The assembled buckling-resistance brace according to claim 1, characterized in that: The buckling energy dissipation section (12) is located in the middle of the cross steel plate (1), and the friction section (11) is located at both ends of the cross steel plate (1).

6. The assembled buckling-resistance brace according to claim 1, characterized in that: The transition portion between the friction section (11) and the buckling energy dissipation section (12) is bonded with an elastic block (3).

7. The assembled buckling-resistance brace according to claim 1, characterized in that: It also comprises a hollow steel pipe (8) whose two ends are respectively connected to a pair of end plates, and the hollow steel pipe (8) is fitted with the elastic block (3).

8. The assembled buckling-resistance brace according to claim 7, characterized in that: Prestressed tendons (9) are inserted into the hollow steel pipe (8), and two ends of the prestressed tendons (9) are fixed on two end plates.

9. The assembled buckling-resistance brace according to claim 1, characterized in that: A viscous damper (4) is connected to one of the end plates.

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