CN220014089U - Corrugated steel plate buckling restrained brace - Google Patents

Abstract

The utility model provides a corrugated steel plate buckling restrained brace which comprises a core steel plate with initial corrugation, backing plates and restraining steel plates, wherein the backing plates are arranged on the left side and the right side of the length direction of the core steel plate with initial corrugation, the restraining plates are arranged on the upper side and the lower side of the thickness direction of the core steel plate with initial corrugation, and the two restraining plates and the two backing plates are fixed together through bolts. Compared with the traditional steel plate buckling restrained brace, the multi-wave buckling restrained brace has the advantages that the core steel plate is designed to be corrugated in advance, fixed points and multiple points form waves simultaneously when being pressed, the effects of multi-point simultaneous energy consumption and natural formation of multi-wave buckling are achieved, the fatigue damage generated at the wave starting position in the transition process of the first-order deformation of the core steel plate to the high-order deformation is effectively reduced, the energy consumption capability is improved, meanwhile, the length of the yielding section is longer, and the ductility and the energy consumption performance are better.

Description

Corrugated steel plate buckling restrained brace

Technical Field

The utility model relates to the technical field of building structures, in particular to a corrugated steel plate buckling restrained brace.

Background

The buckling restrained brace is generally composed of a core unit, a restraining unit and an unbonded material, wherein the core unit bears axial tension pressure, the restraining unit restrains transverse displacement of the core unit to prevent buckling of the core unit, so that the buckling restrained brace fully exerts hysteresis performance after metal yielding to dissipate seismic energy, and the unbonded material can effectively reduce friction between the restraining unit and the core unit, so that the buckling restrained brace has stronger fatigue resistance.

At present, the traditional buckling restrained brace has the following problems:

(1) After the length of the core unit is determined, the overhanging section and the transition section are removed, and the length of the yielding section is limited, resulting in limited energy consumption.

(2) In the process that the buckling restrained brace core unit is pressed to be transited from first-order buckling deformation to high-order buckling deformation, larger fatigue damage is easy to generate at the wave starting position.

(3) The structure is complex, the materials are more, the processing is inconvenient, the manufacturing cost is high, the disassembly and the assembly are complex, and the replacement is difficult.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the corrugated steel plate buckling restrained brace which is high in energy consumption efficiency, good in fatigue performance and easy to replace.

The aim of the utility model can be achieved by the following technical scheme:

the corrugated steel plate buckling restrained brace is characterized by comprising a core steel plate with initial corrugation, a backing plate and a restrained plate; the two backing plates are respectively arranged perpendicular to the core steel plate with the initial corrugation and positioned at two sides of the core steel plate with the initial corrugation in the length direction; the two restraint plates are respectively arranged in parallel with the core steel plate with the initial corrugation and positioned at two sides of the core steel plate with the initial corrugation in the thickness direction; the constraint plate is connected with the backing plate.

Further, a layer of unbonded material is attached to the surface of the core steel plate with the initial corrugation.

Further, the initially corrugated core steel plate comprises an outer extension section, a transition section and a yield section, wherein the transition section is located between the outer extension section and the yield section.

Further, stiffening ribs are welded at the middle of the transition section and the outer extending section in the width direction.

Further, a limiting clamp is arranged in the middle of the yielding section.

Furthermore, the two ends of the length direction of the constraint plate are respectively provided with an inwardly extending slot, and a gap is reserved between the constraint plate and the core steel plate with initial corrugation.

Further, the wavelength, wave height and wave number of the corrugations of the core steel sheet with the initial corrugations are not limited.

Further, the backing plate is provided with bolt holes, and a gap is reserved between the backing plate and the core steel plate with initial corrugation.

Further, bolt holes are formed in the base plate and the constraint plate, and the constraint plate is connected with the base plate through bolts.

Further, the constraint plate is made of steel.

Compared with the prior art, the utility model has the following technical effects:

the core steel plate is designed into the corrugated shape in advance, waves are formed at fixed points and multiple points at the same time when the core steel plate is pressed, the effects of multi-point simultaneous energy consumption and natural multi-wave buckling are achieved, the fatigue damage generated at the wave starting position in the process of transition of the first-order deformation of the core steel plate to the high-order deformation is effectively reduced, the energy consumption capacity is improved, meanwhile, the length of a yielding section is longer, and the ductility and the energy consumption performance are better; meanwhile, the buckling restrained brace of the corrugated steel plate is made of all steel, and is light in weight, good in economy and easy to install; except welding stiffening ribs at two ends of the core steel plate, the steel plate is connected only through bolts, and is convenient to process and short in manufacturing time.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of a corrugated steel plate buckling restrained brace according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a front view structure of a buckling restrained brace made of corrugated steel plates according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a left-hand view structure of a corrugated steel plate buckling restrained brace according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a restraint panel according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a backing plate according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a core steel sheet according to an embodiment of the present utility model;

fig. 7 is a schematic view of a core steel plate provided with a limit clip and a stiffening rib according to an embodiment of the utility model.

Reference numerals illustrate:

1: a core steel plate with initial corrugation; 1-1: an overhanging section; 1-2: a transition section; 1-3: a yield section; 2: a backing plate; 3: a constraint plate; 4: stiffening ribs; 5: a bolt; 6: no adhesive material; 7: and a limit clamp.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 7, the present utility model provides a corrugated steel plate buckling restrained brace, comprising a core steel plate 1 with initial corrugations, a backing plate 2 and a restraining plate 3. The backing plate 2 is provided with two pieces, which are respectively disposed perpendicularly to the core steel plate 1 with the initial corrugation and are located on both sides in the length direction of the core steel plate 1 with the initial corrugation. The constraining plates 3 are provided with two pieces, which are disposed in parallel with the core steel plate 1 with the initial corrugation, respectively, and are located on both sides in the thickness direction of the core steel plate 1 with the initial corrugation. The constraint plates 3 and the backing plates 2 are provided with bolt holes, and the two constraint plates 3 are respectively fixed with the two backing plates 2 by a row of bolts 5 arranged on the side edges of the constraint plates 3. There is a slight gap between the backing plate 2 and the core steel plate 1 with the initial corrugation. There is also a slight gap between the constraint steel plate 3 and the core steel plate 1 with the initial corrugation.

In some preferred embodiments, the surface of the core steel plate 1 with the initial corrugation is treated, and a layer of non-adhesive material 6 is attached to the surface.

In some preferred embodiments, the core steel plate 1 with initial corrugation includes an outer section 1-1, a transition section 1-2, and a yield section 1-3, the transition section 1-2 being located between the outer section 1-1 and the yield section 1-3. Stiffening ribs 4 are welded at the middle of the transition section 1-2 and the outer extending section 1-1 in the width direction. The length of the yielding sections 1-3 is longer, and the ductility and the energy consumption performance are better.

The front and rear end portions of the constraint plate 3 are each provided with an inwardly extending slot. In order to prevent the restraint plate 3 from sliding down on the core steel plate 1 with the initial corrugation, a limit clip 7 is arranged in the middle of the yield section 1-3. Before the core steel plate 1 with the initial corrugation is manufactured, the corrugation height, wavelength and wave number in the corrugated steel plate are designed in advance, preferably circular arc-shaped corrugation is adopted, and corrugation with other shapes can be adopted according to requirements.

The working principle of the utility model is as follows: the core steel plate 1 with the initial corrugation forms waves at fixed points and multiple points at the same time when being pressed, achieves the effect of multi-point simultaneous energy consumption and naturally forms multi-wave buckling, effectively reduces the fatigue damage generated at the wave starting position in the process of transition from first-order deformation to high-order deformation of the core steel plate 1 with the initial corrugation, and improves the energy consumption capability.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The corrugated steel plate buckling restrained brace is characterized by comprising a core steel plate (1) with initial corrugation, a backing plate (2) and a restrained plate (3); the two backing plates (2) are respectively arranged perpendicular to the core steel plate (1) with the initial corrugation and positioned at two sides of the core steel plate (1) with the initial corrugation in the length direction; the restraint plates (3) are respectively arranged in parallel with the core steel plate (1) with the initial corrugation and positioned at two sides of the core steel plate (1) with the initial corrugation in the thickness direction; the constraint plate (3) is connected with the backing plate (2).

2. The corrugated steel plate buckling restrained brace according to claim 1, wherein a layer of unbonded material (6) is attached to the surface of the core steel plate (1) with the initial corrugations.

3. The corrugated steel plate buckling restrained brace according to claim 1, characterized in that the core steel plate (1) with initial corrugation comprises an overhanging section (1-1), a transition section (1-2) and a yielding section (1-3), the transition section (1-2) being located between the overhanging section (1-1) and the yielding section (1-3).

4. A corrugated steel plate buckling restrained brace as claimed in claim 3, characterized in that the transition section (1-2) and the outer extension section (1-1) are welded with stiffening ribs (4) at the middle in the width direction.

5. A corrugated steel plate buckling restrained brace as claimed in claim 3, characterised in that a limit clip (7) is provided in the middle of the yield section (1-3).

6. The corrugated steel plate buckling restrained brace according to claim 1, wherein the two ends of the restrained plate (3) in the length direction are provided with slots extending inwards, and a gap is reserved between the restrained plate (3) and the core steel plate (1) with initial corrugation.

7. The corrugated steel plate buckling restrained brace according to claim 1, characterized in that the wavelength, wave height and wave number of the corrugations of the core steel plate (1) with the initial corrugations are not limited.

8. The corrugated steel plate buckling restrained brace according to claim 1, wherein the backing plate (2) is provided with bolt holes, and a gap is formed between the backing plate (2) and the core steel plate (1) with initial corrugation.

9. The corrugated steel plate buckling restrained brace according to claim 1, wherein bolt holes are formed in the base plate (2) and the restraining plate (3), and the restraining plate (3) and the base plate (2) are connected through bolts (5).

10. The corrugated steel plate buckling restrained brace according to claim 1, characterized in that the restrained plate (3) is made of steel.