CN109457828B - Double-constraint self-reset buckling-restrained energy-dissipation brace - Google Patents
Double-constraint self-reset buckling-restrained energy-dissipation brace Download PDFInfo
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- CN109457828B CN109457828B CN201811366046.XA CN201811366046A CN109457828B CN 109457828 B CN109457828 B CN 109457828B CN 201811366046 A CN201811366046 A CN 201811366046A CN 109457828 B CN109457828 B CN 109457828B
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- 239000004917 carbon fiber Substances 0.000 claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 13
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention provides a double-constraint self-resetting buckling-restrained energy-dissipating support, which consists of a novel disc spring self-resetting component and a buckling-restrained supporting component, wherein the self-resetting component has friction energy-dissipating function, good self-resetting performance and excellent energy-dissipating capacity under the action of small and medium earthquakes; the buckling restrained brace assembly comprises a core plate, a limiting plate, constraint channel steel and bolts, wherein the core plate is in a straight-line and variable-section mode, a local reinforcing section is formed by locally pasting carbon fiber cloth on the core plate, so that the effect of a preset necking section is achieved, the energy consumption performance of the core plate in a steel necking stage is fully utilized, the accumulated energy consumption capacity and hysteresis performance of the core plate are increased, and the performance shows that the multi-wave buckling phenomenon of the brace core plate is obviously restrained, and the accumulated ductility of the brace core plate is obviously improved. The double-constraint self-resetting buckling-restrained brace has good self-resetting performance and energy consumption performance, is simple in structure, convenient to install and easy to popularize.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a double-constraint self-resetting buckling-restrained energy-dissipation brace, which comprises a support frame, a support frame and a support frame.
Background
In order to enable the structure to resist earthquakes and not collapse to damage life safety, the traditional earthquake lateral force resisting structure system emphasizes the ductile design of the structure, and dissipates earthquake energy through a yield mechanism of structural members. However, as energy is consumed through plastic deformation of the structural member, the structure generates larger residual deformation after earthquake, so that the repair difficulty and cost are greatly improved. With the development of economy and society, the improvement of the capability of rapid recovery of functions after urban earthquake has become an important point of attention. Therefore, how to effectively control structural damage in earthquake, reduce structural residual deformation, and shorten the time required for building function recovery after earthquake has become a problem to be solved.
Compared with a common steel support, the Buckling-Restrained Brace (BRB) in the prior art has the advantages that the compression bearing capacity is fully utilized, the Buckling-Restrained Brace has good and stable energy consumption capacity and symmetry of tensile and compression performance, the side rigidity and the ductility of a building structure can be obviously improved, and the Buckling-Restrained Brace is widely applied to practical engineering at home and abroad in recent years. Generally, under the action of small shock, the buckling restrained brace inner core unit keeps elastic; under the action of medium or large earthquake, the buckling restrained brace consumes energy through the elastoplasticity of the inner core unit. However, (1) since it dissipates seismic energy by plastic deformation of only its own steel, the adaptation magnitude or seismic energy is low, and the degree of post-earthquake deformation of the steel is large; (2) Meanwhile, the steel support after energy consumption is continuously in a yield state and cannot automatically return to the initial position, so that the main body structure can generate larger residual deformation after strong earthquake, and the repair difficulty of the structure after earthquake is increased.
In order to solve the problem of residual deformation of the structure after earthquake, a learner introduces a Self-centering system into the buckling restrained brace in the prior art so as to reduce the residual deformation of the brace and further reduce the residual deformation of the main structure, thereby not only retaining the good energy consumption capability of the buckling restrained brace, but also reducing the residual deformation.
However, the mechanism for providing restoring force for the self-restoring buckling restrained brace in the prior art is mainly to arrange prestressed tendons or adopt memory alloy materials (SMA). The self-resetting system of the prestressed tendon has the problems of difficult prestressing force application, prestress loss and the like, and the memory alloy material (SMA) has good self-resetting performance, but has high price, and the performance is greatly influenced by temperature, so that the self-resetting system is not beneficial to popularization and use.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the double-constraint self-resetting buckling restrained brace, which solves the problem of poor self-resetting capability of the self-resetting buckling restrained brace in the prior art after buckling energy consumption.
In order to solve the technical problems, the invention adopts the following technical scheme:
the double-constraint self-resetting buckling-restrained energy dissipation brace comprises a buckling-restrained brace assembly and self-resetting assemblies arranged on two sides of the buckling-restrained brace assembly;
the buckling restrained brace assembly comprises a core plate, a filling plate and channel steel restraining plates, wherein the filling plate is arranged on two long side edges of the core plate, and the two channel steel restraining plates are arranged on the outer sides of the core plate and the filling plate in a clamping manner;
the self-resetting assembly comprises a disc spring bearing plate, a disc spring loop bar, a disc spring force transmission plate and a disc spring, wherein the disc spring bearing plate is installed in the channel steel constraint plate, the disc spring loop bar penetrates through the disc spring bearing plate and is not contacted with the disc spring bearing plate, the disc spring force transmission plate is installed on the disc spring loop bar, the disc spring is sleeved on the disc spring loop bars on two sides of the disc spring force transmission plate, and the self-resetting assembly is symmetrically installed in each channel steel constraint plate.
The invention also has the following technical characteristics:
specifically, buckling restrained brace subassembly still include connecting plate and stiffening plate, the connecting plate be in core board both ends respectively install a plurality of, stiffening plate install between a plurality of connecting plates at core board both ends.
Specifically, the disc spring sleeve rod is fixedly connected with the connecting plate and the disc spring force transmission plate through high-strength bolts respectively.
Specifically, the thickness of the core plate is 6-12 mm, and the thickness of the filling plate is 8-16 mm.
Specifically, the core plate comprises a connecting section, a non-yielding section and a yielding section, wherein a plurality of carbon fiber cloths are respectively adhered to corresponding positions on two sides of the yielding section, and the thickness of the carbon fiber cloths is 0.5-1 mm.
Specifically, the two sides of the yield section of the core plate are coated with non-binding coatings, and the non-binding coatings completely fill gaps between the core plate and the channel steel constraint plate.
Specifically, the disc spring bearing plate is an I-shaped steel plate, and the upper and lower flange plates of the disc spring bearing plate are fixedly arranged on the upper and lower flange plates of the channel steel constraint plate through bolts.
Specifically, the disc spring force transfer plate is an I-shaped steel plate, the upper flange plate and the lower flange plate of the channel steel constraint plate are provided with strip-shaped through holes, and the upper flange plate and the lower flange plate of the disc spring force transfer plate and the upper flange plate and the lower flange plate of the channel steel constraint plate pass through the strip-shaped through holes by bolts for non-contact installation.
Specifically, the friction energy consumption plate is further arranged between the upper and lower flange plates of the disc spring force transmission plate and the upper and lower flange plates of the channel steel constraint plate, and the friction energy consumption plate is in contact with but not fixed with the upper and lower flange plates of the disc spring force transmission plate and the upper and lower flange plates of the channel steel constraint plate.
In particular, the friction energy dissipation plate is made of brass and is replaceable.
Compared with the prior art, the invention has the following technical effects:
according to the double-constraint self-resetting buckling-restrained brace, the carbon fiber cloth is locally stuck on the core plate to form the local reinforcing section, so that the effect of presetting the necking section is achieved, the energy consumption performance of the core plate in the steel necking stage is fully utilized, and the accumulated energy consumption capacity of the core plate is increased.
And (II) the double-constraint self-resetting buckling-restrained brace can also realize buckling constraint of the core plate by pasting carbon fiber cloth outside the core plate, and through the means, the energy consumption performance of the core plate under the action of tension and compression is enhanced, and the performance test shows that the multi-wave buckling phenomenon is obviously restrained, and the accumulated ductility is obviously improved.
And (III) the double-constraint self-resetting buckling-restrained brace not only has the functions of supporting energy consumption and self-resetting energy consumption, but also has the functions of friction energy consumption, and has good self-resetting performance and excellent energy consumption capacity under the action of small and medium earthquakes.
The double-constraint self-resetting buckling-restrained energy-dissipating support has the advantages that the connecting plates and the stiffening plates are arranged at the connecting sections, so that the local rigidity is enhanced, and the damage of the end parts is prevented; setting the thickness of the filling plate to be larger than that of the core plate, and coating a non-adhesive coating on the core plate to prevent the core plate from directly contacting with the channel steel constraint plate; the friction energy consumption plate is installed, so that the loss of the friction energy consumption performance of the self-resetting component is reduced; a group of the channel steel constraint plates are arranged relatively, so that the energy-consuming support can consume energy effectively and reset automatically no matter in a pulling and pressing state.
And (V) the double-constraint self-resetting buckling-restrained energy-dissipation supporting disc spring self-resetting component is assembled on the buckling-restrained supporting component, and can realize the resetting effect on the support under the action of pulling and pressing. And because the unit form of its structure arranges in a flexible way, can satisfy the demand of different structures, different sizes. In addition, the main body stress connecting pieces are all connected by bolts, so that residual stress generated by welding is avoided, no special requirement is made on steel, and the actual production level is met. The whole structure of the device is detachable, and the device can be quickly replaced or repaired after being damaged, and compared with the traditional reinforced concrete combined supporting member, the device has the advantages that the device is more convenient to process and manufacture and is convenient to widely apply and popularize due to no wet operation.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the assembled structure of the present invention;
FIG. 3 is a schematic view of an assembly structure of the buckling restrained brace assembly of the present invention;
FIG. 4 is a schematic diagram of a core plate structure of the present invention;
FIG. 5 is a schematic view of a channel steel restraint plate structure of the present invention;
FIG. 6 is a finite element analysis steel stress distribution diagram of the yield section of the core plate of the present invention;
FIG. 7 is a finite element analysis carbon fiber cloth reinforced region stress distribution diagram of the yield section of the core plate of the present invention;
FIG. 8 is a schematic diagram of the overall structure of the self-resetting assembly of the present invention;
FIG. 9 is a schematic view of the assembled structure of the self-resetting assembly of the present invention;
FIG. 10 is a hysteresis curve of an anti-buckling support assembly of the present invention;
FIG. 11 is a hysteresis curve of the self-resetting assembly of the present invention;
FIG. 12 is a graph of the overall hysteresis curve of the present invention.
The meaning of each reference numeral in the figures is: 1-buckling-restrained brace components, 2-self-resetting components;
11-core plates, 12-filling plates, 13-channel steel constraint plates, 14-connecting plates, 15-reinforcing plates and 16-carbon fiber cloth;
the device comprises a 21-disc spring bearing plate, a 22-disc spring sleeve rod, a 23-disc spring force transmission plate, a 24-disc spring, a 25-strip-shaped through hole and a 26-friction energy consumption plate;
111-connection section, 112-non-yielding section, 113-yielding section.
The following examples illustrate the invention in further detail.
Detailed Description
The following specific embodiments of the present invention are given according to the above technical solutions, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solutions of the present application fall within the protection scope of the present invention.
Examples:
the embodiment provides a double-constraint self-resetting buckling-restrained brace, which comprises a buckling-restrained brace assembly 1 and self-resetting assemblies 2 arranged on two sides of the buckling-restrained brace assembly 1, as shown in fig. 1 to 12;
the buckling restrained brace assembly 1 comprises a core plate 11, a filling plate 12 and channel steel restraining plates 13, wherein the filling plate 12 is arranged on two long sides of the core plate 11, and the two channel steel restraining plates 13 are arranged on the outer sides of the core plate 11 and the filling plate 12 in a clamping manner;
the self-resetting assembly 2 comprises a disc spring bearing plate 21, a disc spring sleeve rod 22, a disc spring force transmission plate 23 and a disc spring 24, wherein the disc spring bearing plate 21 is installed in the channel steel constraint plate 13, the disc spring sleeve rod 22 penetrates through the disc spring bearing plate 21 and is not in contact with the disc spring bearing plate 21, the disc spring force transmission plate 23 is installed on the disc spring sleeve rod 22, the disc spring 24 is sleeved on the disc spring sleeve rods 22 on two sides of the disc spring force transmission plate 23, and the self-resetting assembly 2 is symmetrically installed in each channel steel constraint plate 13.
As a specific implementation manner of the present embodiment, the buckling restrained brace assembly 1 of the present embodiment further includes a plurality of connection plates 14 and stiffening plates 15, the connection plates 14 are respectively installed at two ends of the core plate 11, and the stiffening plates 15 are installed between the plurality of connection plates 14 at two ends of the core plate 11.
As a specific implementation manner of the present embodiment, the disc spring sleeve rod 22 of the present embodiment is fixedly mounted with the connecting plate 14 and the disc spring force transmission plate 23 through the high-strength bolts 27 respectively.
As a specific embodiment of the present example, the thickness of the core plate 11 of the present example is 6 to 12mm, and the thickness of the filler plate 12 is 8 to 16mm.
As a specific implementation manner of this embodiment, the core plate 11 of this embodiment includes a connection section 111, a non-yielding section 112 and a yielding section 113, and a plurality of carbon fiber cloths 16 are respectively adhered to corresponding positions on two sides of the yielding section 113, where the thickness of the carbon fiber cloths 16 is 0.5-1 mm.
As a specific implementation of this embodiment, both sides of the yield section 113 of the core plate 11 of this embodiment are coated with an unbonded coating that completely fills the gap between the core plate 11 and the channel steel restraining plate 13.
As a specific implementation manner of this embodiment, the disc spring bearing plate 21 of this embodiment is an i-shaped steel plate, and the upper and lower flange plates of the disc spring bearing plate 21 are fixedly mounted on the upper and lower flange plates of the channel steel constraint plate 13 through bolts.
As a specific implementation manner of the embodiment, the disc spring force transfer plate 23 of the embodiment is an i-shaped steel plate, the upper and lower flange plates of the channel steel constraint plate 13 are provided with strip-shaped through holes 25, and the upper and lower flange plates of the disc spring force transfer plate 23 and the upper and lower flange plates of the channel steel constraint plate 13 are mounted by bolts penetrating through the strip-shaped through holes 25 without contact.
As a specific implementation manner of this embodiment, a friction energy dissipation plate 26 is further installed between the upper and lower flange plates of the disc spring force transfer plate 23 and the upper and lower flange plates of the channel steel constraint plate 13, and the friction energy dissipation plate 26 is in contact with but not fixed to the upper and lower flange plates of the disc spring force transfer plate 23 and the upper and lower flange plates of the channel steel constraint plate 13.
As a specific implementation of this embodiment, the friction dissipative plate 26 of this embodiment is made of brass and is replaceable.
The present embodiment is described in more detail below:
(one) buckling restrained brace assembly 1:
the yield sections 113 of the core plate 11 of the present embodiment are uniformly divided into a plurality of sections, and carbon fiber cloths 16 are attached to the spaced sections to form local reinforcing areas. And a preset necking section is formed between every two reinforcing areas, when the core plate 11 is pressed, the steel groove constraint plate 13 is used for buckling constraint on the core plate, and the carbon fiber cloth 16 is simultaneously participated in to inhibit the core plate 11 from forming multi-wave buckling. When the core plate 11 is in a tension state and is greatly deformed, the preset necking section enters a necking stage according to the expectation, so that the energy consumption performance of the steel in the necking stage is fully exerted, the accumulated ductility of the component is increased, and the finite element analysis stress distribution diagram of the yield section 113 of the core plate 11 is shown in fig. 5, wherein the analysis shows that the effect of the preset necking section meets the expectation.
The non-yielding section 112 of the core plate 11 of this embodiment is a transition section of the connecting section 111 and the yielding section 113, the cross-sectional area of which is larger than that of the yielding section 113, the non-yielding section 112 does not yield, but only bears the transition function of transferring load, the length of the section can be determined according to the design requirement and the actual size of the structure, and the lengths of the connecting section 111 and the yielding section 113 can be determined according to the building support requirement and the design requirement.
The pasting interval of the carbon fiber cloth 16 in the embodiment is determined by the length of the yielding section, the value is between 20 cm and 30cm, and the pasting width of the fiber cloth is 0.3 to 0.5 times of the pasting interval of the two fiber cloths.
The thickness of the core plate 11 in this embodiment ranges from 6mm to 12mm, and the thickness of the filling plate 12 is 2mm to 4mm greater than the thickness of the core plate 11, so that the core plate 11 is prevented from directly contacting the channel steel constraint plate 13, and the channel steel constraint plate 13 is prevented from participating in direct stress. The filling plate 12 is provided with equidistant bolt holes, the hole spacing and the hole diameter of the filling plate are matched with the holes on the channel steel constraint plate 13, and the purpose is to facilitate the connection of the filling plate 12 and the channel steel constraint plate 13.
The channel steel constraint plate 13 of the embodiment not only plays a role in constraining the core plate 11, but also serves as a fixing device of the self-resetting assembly 2, and also serves as a friction plate of the disc spring force transfer plate 23 in the self-resetting assembly 2, so that three surfaces of the channel steel constraint plate 13 are required to be perforated, the upper flange plate and the lower flange plate of the channel steel constraint plate 13 are provided with strip-shaped through holes 25 for connecting the channel steel constraint plate 13 with the disc spring force transfer plate 23, and the disc spring force transfer plate 23 can slide on the strip-shaped through holes 25 to perform friction energy consumption in a sliding friction mode. Because the number of holes on the channel steel constraint plate 13 is large, the cross section is greatly reduced, so that rigidity checking can be performed in the hole design by a general method in the field, the hole spacing is controlled, and the value is calculated according to the design. Preventing stress concentration.
The non-stick coating material of this embodiment is selected from commercially available non-stick coating materials.
The integral hysteresis performance analysis is performed on the buckling restrained brace assembly of the embodiment, the hysteresis curve is shown in fig. 10, the hysteresis curve is full, the hysteresis performance is stable and reliable, and compared with the traditional buckling restrained brace, the energy consumption performance is greatly improved.
(II) self-resetting component 2:
as shown in FIG. 9, the assembly structure of the self-resetting assembly 2 in this embodiment is that the disc spring bearing plate 21 is an I-shaped steel plate, a hole with a diameter larger than that of the disc spring sleeve rod 22 is formed in the center of the web plate of the disc spring bearing plate 21, the hole wall is not in contact with the disc spring sleeve rod 22 so as to facilitate free movement of the disc spring sleeve rod 22, the diameter of the hole of the disc spring bearing plate 21 is smaller than that of the disc spring 24 so as to realize the counterforce of the disc spring bearing plate 21 to the disc spring 24, the upper and lower flange plates of the disc spring bearing plate 21 are provided with bolt holes, the diameter and the distance of the bolt holes are matched with those of the hole of the channel steel constraint plate 13 so as to realize connection between the channel steel constraint plate 13 and the disc spring bearing plate 21, and a gasket can be added at the joint of the channel steel constraint plate 13 and the disc spring bearing plate 21 in the actual manufacturing and installation process so as to facilitate the installation of the adjustment height.
The specification of the butterfly spring 24 of this embodiment is selected according to the actual requirement, and is designed according to the specification, so that a plurality of butterfly springs are inserted on the butterfly spring sleeve rod 22, when the butterfly springs are pulled, one side of the butterfly spring 24 sets provide restoring force, and when the butterfly springs are pressed, the other side of the butterfly spring 24 sets provide restoring force.
In the embodiment, bolt holes are formed in the upper and lower flange plates of the disc spring force transfer plate 23, and a friction energy dissipation plate 26 made of brass with a uniform cross section is arranged at the position of the holes of the upper and lower flange plates of the disc spring force transfer plate 23. The high-strength bolts which meet the design specification requirements are selected to penetrate through the disc spring force transfer plate 23 and the friction energy consumption plate 26, then penetrate through the channel steel constraint plate 13, the nuts are pre-tightened, and the nuts are screwed to the design requirements by adopting a torque wrench according to the designed sliding friction force value. After the area of the friction energy dissipation plate 26 and the bolt force provided by the bolt are set, the sliding friction force of the disc spring force transmission plate 23 can be determined, and after the sliding distance is limited, the energy dissipation performance of the disc spring force transmission plate 23 can be determined. The friction energy dissipation plate 26 is made of brass and is used as a friction contact surface of the disc spring force transmission plate 23, so that the friction aging phenomenon faced by the traditional friction energy dissipation device can be effectively delayed.
The end of the disc spring sleeve rod 22 penetrating through the connecting plate 14 is provided with a limit nut, and the freely movable size is reserved according to the design requirement. When the member is pulled, the disc spring sleeve rod 22 drives the disc spring force transfer plate 23 to approach the end part of the energy dissipation support, and the disc spring 24 group is extruded. Meanwhile, when the disc spring force transfer plate 23 moves, the friction energy dissipation plate 26 and the channel steel constraint plate 13 generate sliding friction to perform friction energy dissipation, after the disc spring 24 group is pressed, elastic restoring force which is opposite to the moving direction is provided, the component is restored, and when the energy dissipation support is pressed, the restoring principle is the same.
The overall hysteresis performance analysis was performed on the self-resetting component of the present embodiment described above, and the results are shown in fig. 11. Hysteresis performance analysis is performed on the dual-constraint self-resetting buckling-restrained brace of the embodiment, the result is shown in fig. 12, the result meets the expected assumption, and the energy consumption performance and the self-resetting performance can meet the expected assumption.
The double-constraint self-resetting buckling-restrained brace of the embodiment is installed between building structure frames, and when the installed building structure generates interlayer displacement, the double-constraint self-resetting buckling-restrained brace of the embodiment is driven to move and play roles of the buckling-restrained brace and the structure recovery after earthquake.
Claims (7)
1. The double-constraint self-resetting buckling-restrained brace is characterized by comprising a buckling-restrained brace component (1) and self-resetting components (2) arranged on two sides of the buckling-restrained brace component (1);
the buckling-restrained brace assembly (1) comprises a core plate (11), a filling plate (12) and channel steel constraint plates (13), wherein the filling plate (12) is arranged on two long sides of the core plate (11), and the two channel steel constraint plates (13) are arranged on the outer sides of the core plate (11) and the filling plate (12) in a clamping mode;
the self-resetting assembly (2) comprises a disc spring bearing plate (21), a disc spring sleeve rod (22), a disc spring force transfer plate (23) and disc springs (24), wherein the disc spring bearing plate (21) is arranged in the channel steel constraint plate (13), the disc spring sleeve rod (22) penetrates through the disc spring bearing plate (21) and is not contacted with the disc spring force transfer plate (21), the disc spring force transfer plate (23) is arranged on the disc spring sleeve rod (22), the disc springs (24) are sleeved on the disc spring sleeve rods (22) on two sides of the disc spring force transfer plate (23), and the self-resetting assembly (2) is symmetrically arranged in each channel steel constraint plate (13);
the core plate (11) comprises a connecting section (111), a non-yielding section (112) and a yielding section (113), wherein a plurality of carbon fiber cloths (16) are respectively adhered to corresponding positions on two sides of the yielding section (113), and the thickness of the carbon fiber cloths (16) is 0.5-1 mm;
the disc spring force transfer plate (23) is an I-shaped steel plate, strip-shaped through holes (25) are formed in the upper and lower flange plates of the channel steel constraint plate (13), and the upper and lower flange plates of the disc spring force transfer plate (23) and the upper and lower flange plates of the channel steel constraint plate (13) are installed in a non-contact mode by using bolts to penetrate through the strip-shaped through holes (25);
and a friction energy consumption plate (26) is further arranged between the upper and lower flange plates of the disc spring force transmission plate (23) and the upper and lower flange plates of the channel steel constraint plate (13), and the friction energy consumption plate (26) is in contact with but not fixed with the upper and lower flange plates of the disc spring force transmission plate (23) and the upper and lower flange plates of the channel steel constraint plate (13).
2. The double-constraint self-resetting buckling-restrained brace as claimed in claim 1, wherein the buckling-restrained brace assembly (1) further comprises a connecting plate (14) and reinforcing plates (15), wherein a plurality of connecting plates (14) are respectively arranged at two ends of the core plate (11), and the reinforcing plates (15) are arranged among the plurality of connecting plates (14) at two ends of the core plate (11).
3. The double-constraint self-resetting buckling-restrained brace as claimed in claim 2, wherein the disc spring sleeve rod (22) is fixedly connected with the connecting plate (14) and the disc spring force transmission plate (23) through high-strength bolts (27) respectively.
4. The double-constraint self-resetting buckling-restrained brace as claimed in claim 1, wherein the thickness of the core plate (11) is 6-12 mm, and the thickness of the filling plate (12) is 8-16 mm.
5. The double-constraint self-resetting buckling-restrained brace as claimed in claim 1, wherein the two sides of the yield section (113) of the core plate (11) are coated with an unbonded coating, and the unbonded coating fills the gap between the core plate (11) and the channel steel constraint plate (13) completely.
6. The double-constraint self-resetting buckling-restrained brace as claimed in claim 1, wherein the disc spring bearing plate (21) is an I-shaped steel plate, and the upper and lower flange plates of the disc spring bearing plate (21) are fixedly arranged on the upper and lower flange plates of the channel steel constraint plate (13) through bolts.
7. The dual-constraint self-resetting buckling-restrained brace as claimed in claim 1, wherein the friction dissipative plate (26) is made of brass and is replaceable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366046.XA CN109457828B (en) | 2018-11-16 | 2018-11-16 | Double-constraint self-reset buckling-restrained energy-dissipation brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366046.XA CN109457828B (en) | 2018-11-16 | 2018-11-16 | Double-constraint self-reset buckling-restrained energy-dissipation brace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109457828A CN109457828A (en) | 2019-03-12 |
| CN109457828B true CN109457828B (en) | 2024-02-13 |
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| CN109853770B (en) * | 2019-03-27 | 2021-02-26 | 长安大学 | Self-reset double-bow counter-pulling double-energy-consumption supporting device |
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| CN112343197B (en) * | 2020-10-20 | 2022-03-15 | 汕头大学 | Staged energy-consumption buckling-restrained brace system and process based on paper folding structure |
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| CN112502035B (en) * | 2020-12-08 | 2022-03-15 | 防灾科技学院 | Assembled bridge double-column pier containing triple energy dissipation system |
| CN113026944B (en) * | 2021-03-19 | 2022-02-15 | 东北林业大学 | Self-resetting buckling-restrained brace with variable friction device |
| CN113175115B (en) * | 2021-05-11 | 2022-11-15 | 四川大学 | Double-rigidity buckling restrained damper |
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| CN113802909B (en) * | 2021-09-27 | 2022-06-21 | 重庆大学 | Self-resetting energy-dissipation supporting structure and assembling method |
| CN113846775A (en) * | 2021-10-22 | 2021-12-28 | 上海天华崧易建筑设计有限公司 | Corrugated steel plate clad cold-bending thin-walled shear wall with self-resetting energy dissipation support |
| CN113944360B (en) * | 2021-11-15 | 2022-11-29 | 重庆大学 | Multi-stage self-resetting support component and assembling method thereof |
| CN114382190A (en) * | 2021-12-28 | 2022-04-22 | 石家庄铁道大学 | Disk spring slope self-resetting buckling restrained brace |
| CN114411963B (en) * | 2022-03-10 | 2023-06-16 | 河北建筑工程学院 | Self-resetting energy consumption device and steel structure beam column connecting node |
| CN114482321B (en) * | 2022-03-30 | 2023-08-01 | 中建三局第一建设工程有限责任公司 | Support device and lateral force resisting member |
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