Double-order buckling restrained brace mechanism

Abstract

The utility model discloses a double-order buckling restrained brace mechanism, which comprises two buckling restrained brace units and a rigid brace unit, each buckling restrained brace unit comprises a core plate, an inner sleeve and an outer sleeve, and the two buckling restrained brace units are fixedly connected with the rigid brace unit. Double-order damping energy dissipation is formed in the buckling restrained braces at the two ends respectively, and meanwhile the rigid supporting unit located in the middle is matched, so that the yield supporting range of the whole double-order buckling restrained brace mechanism is expanded, and meanwhile the overall supporting rigidity is improved.

Description

Technical Field

[0001] The utility model relates to the field of building structures, in particular to a double-order buckling restraint support mechanism. Background Art

[0002] Buckling restrained brace is a seismic energy-absorbing component used in building structures. It provides a large lateral stiffness within the elastic range, and dissipates the seismic input energy through the axial tension and compression yield of the support itself after entering the plastic state, thereby protecting the main structure from or less damage under the action of a large earthquake, while increasing the structural damping and effectively reducing the structural displacement. In order to improve the effect of structural damping energy dissipation, a double-order buckling restrained brace device disclosed in the utility model patent with application number 202321230303.3 has appeared in the existing structure. When a small earthquake occurs, the first-order energy dissipation plate deforms and dissipates energy. When a large earthquake occurs, both the first-order energy dissipation plate and the second-order energy dissipation plate deform and dissipate energy. The entire device will add a yield energy dissipation stage to improve the energy dissipation effect of the entire device under different earthquake levels. However, in this device, its design is to improve the load effect, and while improving the load effect, its stiffness is also subject to testing. In the above structure, after the buckling restrained support yields, its axial stiffness will drop sharply, resulting in a significant reduction in the lateral stiffness of the buckling restrained support frame structure and a large interlayer deformation. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a double-order buckling restraint support mechanism, which can expand the yield support range of the overall double-order buckling restraint support mechanism while improving the overall support stiffness.

[0004] According to the double-stage buckling restraint support mechanism of the first aspect of the utility model, it includes two buckling restraint support units and a rigid support unit, the buckling restraint support unit includes a core plate, an inner sleeve and an outer sleeve, wherein; the core plate includes a first yielding section, a second yielding section, a first connecting section and a second connecting section, along the axial direction of the core plate, the first yielding section is connected to the second yielding section, the first connecting section is connected to the first yielding section, the second connecting section is connected to the second yielding section, the radial size of the first yielding section is smaller than the radial size of the second yielding section, and a limit block is fixedly arranged on the surface of the first yielding section; the inner sleeve The sleeve is sleeved outside the first yield section and the second yield section, and concrete is filled between the core plate and the inner sleeve; the outer sleeve is sleeved outside the inner sleeve, and the outer sleeve wraps a portion connected to the connecting section of the first yield section and the first yield section. The outer sleeve is provided with a through hole, and the limit block is penetrated through the inner sleeve and the outer sleeve and built into the through hole. The size of the limit block is smaller than the size of the through hole and can move in the through hole; the two ends of the rigid support unit are respectively fixedly connected to the two second connecting sections to fix the two flexure constraint support units and the rigid support unit.

[0005] The double-order buckling restraint support mechanism according to the embodiment of the utility model has at least the following beneficial effects: double-order damping energy dissipation is formed in the buckling restraint supports at both ends respectively, and at the same time, in conjunction with the rigid support unit located in the middle, the yield support range of the overall double-order buckling restraint support mechanism is expanded while the overall support stiffness is improved.

[0006] According to some embodiments of the present invention, a connecting plate is connected between the first yielding section and the second yielding section, and a radial dimension of the connecting plate is greater than a radial dimension of the second yielding section.

[0007] According to some embodiments of the present invention, there is a smooth transition between the first yield section and the connecting plate, and there is a smooth transition between the second yield section and the connecting plate.

[0008] According to some embodiments of the utility model, the second connecting section is fixedly connected to a first connecting end plate, the end of the rigid support unit is fixedly connected to a second connecting end plate, the first connecting end plate and the second connecting end plate are fitted together and fixedly connected by multiple bolts.

[0009] According to some embodiments of the present invention, the surface of the core board is covered with a non-adhesive layer.

[0010] According to some embodiments of the utility model, reinforcing ribs are provided between the limiting block and the core plate.

[0011] According to some embodiments of the utility model, the first connecting segment and the second connecting segment are both provided with reinforcing plates, and the reinforcing plates are arranged on both sides of the core plate. Parts of the reinforcing plates extend to the first connecting segment and the second connecting segment and are built into the inner sleeve.

[0012] According to some embodiments of the present invention, the reinforcing plate is perpendicular to the surface of the core plate.

[0013] According to some embodiments of the present invention, the reinforcing plate is in the shape of a right-angled trapezoid, and the hypotenuse of the reinforcing plate is arranged on a side of the reinforcing plate close to the rigid support unit.

[0014] According to some embodiments of the present invention, the core plate is integrally formed.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 A schematic diagram of a double-order buckling restraint support mechanism according to an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the core plate of the double-order buckling restraint support mechanism according to an embodiment of the present utility model.

[0019] 10. Buckling restrained brace unit;

[0020] 100, core plate; 110, first yielding section; 120, second yielding section; 130, first connecting section; 140, second connecting section; 141, first connecting end plate; 150, limit block; 151, reinforcing rib; 160, connecting plate; 170, reinforcing plate;

[0021] 200, inner sleeve; 210, concrete;

[0022] 300, outer sleeve; 310, perforation;

[0023] 20. Rigid support unit; 21. Second connecting end plate; 22. Bolt; DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figure 1 and Figure 2The double-stage buckling restraint support mechanism of the first embodiment of the utility model includes two buckling restraint support units 10 and a rigid support unit 20. The buckling restraint support unit 10 includes a core plate 100, an inner sleeve 200 and an outer sleeve 300, wherein the core plate 100 includes a first yielding section 110, a second yielding section 120, a first connecting section 130 and a second connecting section 140. Along the axial direction of the core plate 100, the first yielding section 110 and the second yielding section 120 are connected, the first connecting section 130 is connected to the first yielding section 110, the second connecting section 140 is connected to the second yielding section 120, and the first yielding section 110 is connected to the second yielding section 120. The radial dimension of the yielding section 110 is smaller than the radial dimension of the second yielding section 120, and a limit block 150 is fixedly arranged on the surface of the first yielding section 110; the inner sleeve 200 is sleeved outside the first yielding section 110 and the second yielding section 120, and concrete 210 is filled between the core plate 100 and the inner sleeve 200; the outer sleeve 300 is sleeved outside the inner sleeve 200, and the outer sleeve 300 wraps the connecting section connected to the first yielding section 110 and the first yielding section 110, and the outer sleeve 300 is provided with a through hole 310, and the limit block 150 is penetrated by the inner sleeve 200 and the outer sleeve 300, and the inner sleeve 300 is provided with a through hole 310. The limit block 150 is placed in the through hole 310, and the size of the limit block 150 is smaller than the size of the through hole 310, and it can move in the through hole 310; the two ends of the rigid support unit 20 are respectively fixedly connected to the two second connecting sections 140, so that the two buckling restraint support units 10 and the rigid support unit 20 are fixedly connected, and a connecting plate 160 is connected between the first yielding section 110 and the second yielding section 120, and the radial size of the connecting plate 160 is greater than the radial size of the second yielding section 120. A reinforcing rib 151 is arranged between the limit block 150 and the core plate 100, and the second connecting section 140 is fixedly connected to the first connecting end plate 1 41. The end of the rigid support unit 20 is fixedly connected with the second connection end plate 21. The first connection end plate 141 and the second connection end plate are fitted and fixedly connected by a plurality of bolts 22. The first connection section 130 and the second connection section 140 are both provided with a reinforcing plate 170. The reinforcing plate 170 is arranged on both sides of the core plate 100. Part of the reinforcing plate 170 extends to the first connection section 130 and the second connection section 140 and is built into the inner sleeve 200. The reinforcing plate 170 is perpendicular to the surface of the core plate 100. The hypotenuse of the reinforcing plate 170 is arranged on the side of the reinforcing plate 170 close to the rigid support unit 20.

[0029] In actual application, the buckling restraint support unit 10 and the rigid support unit 20 connected coaxially together constitute the same support system. The two first connecting sections 130 are respectively connected to two different building components. When the entire building is subjected to vibration, the first connecting sections 130 at both ends undergo relative displacement, and the first yielding sections 110 of the core panels 100 at both ends yield first. At this time, if the vibration amplitude is not large, the second yielding section 120 is still in an elastic state and has not deformed. When the vibration amplitude becomes larger, the entire first yielding section 110 is bent. The amplitude increases so that the limit block 150 and the inner side of the perforation 310 abut against each other. Then, through the cooperation of the limit block 150 and the perforation 310, the first yield sections 110 on both sides stop further realizing. At this time, the second yield section 120 begins to realize, thereby forming double-order yield on both sides of the entire structure and improving the yield support range. At the same time, during the bending yield process of the first yield section 110 and the second yield section 120, the rigid support unit 20 located in the middle can provide backup stiffness for the support, reduce the interlayer deformation of the structure, and improve the overall support stiffness.

[0030] In summary, double-order damping energy dissipation is formed in the buckling restrained supports at both ends, and the rigid support unit 20 located in the middle is used to expand the yield support range of the overall double-order buckling restrained support mechanism while improving the overall support stiffness.

[0031] Specifically, in the second embodiment of the present invention, the surface of the core plate 100 is covered with a non-adhesive layer, and the core plate 100 is integrally formed, and the rigid support unit 20 can be a square steel tube.

[0032] It should be mentioned that a reinforcing rib 151 is provided between the limiting block 150 and the core plate 100 to strengthen the structural strength of the limiting plate and avoid the limiting plate from breaking due to collision between the limiting edge and the through hole 310 .

[0033] Preferably, a connecting plate 160 is connected between the first yielding section 110 and the second yielding section 120, and the radial dimension of the connecting plate 160 is greater than the radial dimension of the second yielding section 120. The connecting plate 160 is used to connect the first yielding section 110 and the second yielding section 120. Enlarging the size of the connection position can effectively prevent the core plate 100 from breaking at the transition position. In addition, in order to reduce stress concentration, the first yielding section 110 and the connecting plate 160 have a smooth transition, and the second yielding section 120 and the connecting plate 160 have a smooth transition.

[0034] Preferably, the second connecting section 140 is fixedly connected to the first connecting end plate 141, and the end of the rigid support unit 20 is fixedly connected to the second connecting end plate 21. The first connecting end plate 141 and the second connecting end plate are fitted together and fixedly connected by multiple bolts 22. In addition, the first connecting end plate 141 and the second connecting end plate 21 can be further welded to improve the strength of the combination.

[0035] In some embodiments, in order to improve the overall strength of the core plate 100, the first connecting section 130 and the second connecting section 140 are both provided with a reinforcing plate 170, which is arranged on both sides of the core plate 100, and part of the reinforcing plate 170 extends to the first connecting section 130 and the second connecting section 140, and is built into the inner sleeve 200. The welding action position of the node and the double-order buckling restraint support can be increased to improve the yield support effect. Specifically, in order to improve its effect, the reinforcing plate 170 is perpendicular to the surface of the core plate 100, and further optimized, the reinforcing plate 170 is in a right-angle trapezoidal shape, and the hypotenuse of the reinforcing plate 170 is arranged on the side of the reinforcing plate 170 close to the rigid support unit 20, and the inclined inclined surface is used to reduce stress concentration and improve the overall strength of the double-order buckling restraint support.

[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A double-stage buckling restraint support mechanism, characterized in that: It comprises two buckling restraint support units (10) and a rigid support unit (20), wherein the buckling restraint support unit (10) comprises a core plate (100), an inner sleeve (200) and an outer sleeve (300), wherein; The core plate (100) comprises a first yielding section (110), a second yielding section (120), a first connecting section (130) and a second connecting section (140); along the axial direction of the core plate (100), the first yielding section (110) and the second yielding section (120) are connected, the first connecting section (130) and the first yielding section (110) are connected, and the second connecting section (140) and the second yielding section (120) are connected; the radial dimension of the first yielding section (110) is smaller than the radial dimension of the second yielding section (120); and a limit block (150) is fixedly arranged on the surface of the first yielding section (110); The inner sleeve (200) is sleeved outside the first yielding section (110) and the second yielding section (120), and concrete (210) is filled between the core plate (100) and the inner sleeve (200); The outer sleeve (300) is sleeved outside the inner sleeve (200), and the outer sleeve (300) wraps the connecting section that is partially connected to the first yield section (110), and the first yield section (110). The outer sleeve (300) is provided with a through hole (310). The limit block (150) is penetrated by the inner sleeve (200) and the outer sleeve (300), and is built into the through hole (310). The size of the limit block (150) is smaller than the size of the through hole (310), and can move in the through hole (310); Both ends of the rigid support unit (20) are respectively fixedly connected to the two second connection sections (140), so that the two buckling restraining support units (10) and the rigid support unit (20) are fixedly connected.

2. The double-stage buckling restrained support mechanism according to claim 1, characterized in that: A connecting plate (160) is connected between the first yielding section (110) and the second yielding section (120), and a radial dimension of the connecting plate (160) is greater than a radial dimension of the second yielding section (120).

3. The double-stage buckling restrained support mechanism according to claim 2, characterized in that: There is a smooth transition between the first yield section (110) and the connecting plate (160), and there is a smooth transition between the second yield section (120) and the connecting plate (160).

4. The double-stage buckling restrained support mechanism according to claim 1, characterized in that: The second connecting section (140) is fixedly connected to a first connecting end plate (141), and the end of the rigid support unit (20) is fixedly connected to a second connecting end plate (21); the first connecting end plate (141) and the second connecting end plate are fitted together and fixedly connected by a plurality of bolts (22).

5. The double-stage buckling restrained support mechanism according to claim 1, characterized in that: The surface of the core plate (100) is covered with a non-adhesive layer.

6. The double-stage buckling restrained support mechanism according to claim 1, characterized in that: A reinforcing rib (151) is provided between the limiting block (150) and the core plate (100).

7. The double-stage buckling restrained support mechanism according to claim 1, characterized in that: The first connecting section (130) and the second connecting section (140) are both provided with a reinforcing plate (170), and the reinforcing plate (170) is arranged on both sides of the core plate (100). Part of the reinforcing plate (170) extends to the first connecting section (130) and the second connecting section (140), and is built into the inner sleeve (200).

8. The double-stage buckling restrained support mechanism according to claim 7, characterized in that: The reinforcing plate (170) is perpendicular to the surface of the core plate (100).

9. The double-stage buckling restrained support mechanism according to claim 7, characterized in that: The reinforcing plate (170) is in the shape of a right-angled trapezoid, and the hypotenuse of the reinforcing plate (170) is arranged on a side of the reinforcing plate (170) close to the rigid support unit (20).

10. The double-stage buckling restrained brace mechanism according to claim 1, 7, 8 or 9, characterized in that: The core plate (100) is integrally formed.

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