Phase-wise energy dissipation buckling-restrained brace based on paper-folding configuration and working method thereof

Abstract

The application belongs to the technical field of buckling-restrained braces, and proposes a staged energy dissipation buckling-restrained brace based on a paper folding configuration and a working method thereof. A damper with a periodic paper folding configuration structure is arranged on a support mechanism. The damper comprises a first core plate and a second core plate connected to each other. The first core plate comprises a plurality of first limbs, and the second core plate comprises a plurality of second limbs. The plurality of first limbs and the plurality of second limbs are arranged alternately. A periodic paper folding configuration structure is arranged between each group of adjacent first limbs and second limbs. Under the working conditions of ordinary earthquakes or wind loads, etc., the energy dissipation structure alone participates in energy dissipation, and the periodic paper folding configuration structure deforms to dissipate energy. Under the working conditions of rare earthquakes or super typhoons, etc., the first limbs and the second limbs relatively displace, shear deformation occurs between the main core plate and the limbs, and the core plate participates in energy dissipation and plays a leading role. The application is suitable for ordinary earthquakes or wind, and various situations with large earthquake or wind loads.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of buckling-restrained brace, in particular to a stage energy dissipation buckling-restrained brace based on paper folding configuration and a working method thereof. BACKGROUND

[0002] The buckling-restrained brace is used in the main plant of the thermal power plant, which can improve the seismic performance of the thermal power plant structure, and the buckling-restrained brace and the damper are used together, which further improves the seismic performance of the buckling-restrained brace.

[0003] The inventor finds that the buckling-restrained brace with damper used in the thermal power plant and other fields improves the seismic performance, but it can only adapt to ordinary seismic or wind load conditions, and cannot reflect good seismic performance in the case of large seismic or wind load, and if the seismic performance is further improved by increasing the complexity of the damper structure, it will bring problems such as complex structure and high cost, and waste resources in design and material. SUMMARY

[0004] In order to solve the above problems, the present application provides a stage energy dissipation buckling-restrained brace based on paper folding configuration and a working method thereof, in which the energy dissipation structure alone participates in energy dissipation under ordinary seismic or wind load conditions, and the periodic paper folding configuration structure deforms to dissipate energy, and under the condition of rare earthquake or super typhoon, the multiple first limbs and multiple second limbs arranged alternately displace relatively, the shear deformation occurs between the first main core plate and the first limb, and between the second main core plate and the second limb, the core plate participates in energy dissipation and plays a leading role, which is suitable for ordinary earthquake or wind, and large seismic or wind load, and the structure is simple.

[0005] In order to achieve the above purpose, in the first aspect, the present application provides a stage energy dissipation buckling-restrained brace based on paper folding configuration, which adopts the following technical scheme:

[0006] A stage energy dissipation buckling-restrained brace based on paper folding configuration, comprising a support mechanism and a damper arranged on the support mechanism;

[0007] The support mechanism comprises first and second steel columns parallel to each other, and first and second cross beams vertically arranged at both ends of the first steel column; the connection between the first cross beam and the first steel column is inclined to set a first support, and the connection between the second cross beam and the second steel column is inclined to set a second support; the first and second supports are connected with the second cross beam through the damper;

[0008] The damper comprises a first core plate and a second core plate connected with each other; the first core plate comprises a plurality of first limbs, the second core plate comprises a plurality of second limbs, the plurality of first limbs and the plurality of second limbs are staggered, and an energy dissipation structure is arranged between each group of adjacent first limbs and second limbs; the energy dissipation structure is a periodic paper folding structure.

[0009] Further, the first core plate comprises a first main core plate, and the plurality of first limbs are arranged on the first main core plate; the second core plate comprises a second main core plate, and the plurality of second limbs are arranged on the second main core plate; the two ends of the first core plate are connected with the second core plate through a first connecting plate and a second connecting plate respectively.

[0010] Further, the first connecting plate comprises a back plate and first and second limiting plates vertically arranged at the two ends of the back plate; the second connecting plate comprises a back plate and third and fourth limiting plates vertically arranged at the two ends of the back plate; the first main core plate is provided with a first baffle corresponding to the second limiting plate, and the second main core plate is provided with a third baffle corresponding to the first limiting plate; the first main core plate is provided with a second baffle corresponding to the fourth limiting plate, and the second main core plate is provided with a fourth baffle corresponding to the third limiting plate.

[0011] Further, the back plate is vertically provided with a top plate and a bottom plate; sealing gaskets are arranged between the first limiting plate, the second limiting plate, the third limiting plate, the fourth limiting plate and the bottom plate; sealing gaskets are arranged between the first baffle, the second baffle, the third baffle and the fourth baffle and the top plate.

[0012] Further, a buffer pad is arranged between the first baffle and the second limiting plate, between the third baffle and the first limiting plate, between the second baffle and the fourth limiting plate, and between the fourth baffle and the third limiting plate.

[0013] Further, a third connecting plate is arranged between the plurality of first limbs on the first core plate and the plurality of second limbs on the second core plate.

[0014] Further, the third connecting plate is fixed on the plurality of second limbs, the third connecting plate is provided with a plurality of second butt joints, and the plurality of first limbs are provided with a plurality of first butt joints corresponding to the plurality of second butt joints; the first butt joint and the second butt joint are both long holes.

[0015] Further, the energy dissipation structure comprises the first connecting member and the second connecting member which are parallel to each other, the first positioning angle steel arranged on the first connecting member, the second positioning angle steel arranged on the second connecting member, and the periodic origami configuration structure arranged between the first positioning angle steel and the second positioning angle steel.

[0016] Further, the periodic origami configuration structure comprises a plurality of unit plates, the convex fold and the concave fold arranged between the unit plates.

[0017] In order to achieve the above-mentioned purpose, in a second aspect, the application further provides a working method of the staged energy dissipation buckling-restrained brace based on the origami configuration.

[0018] The working method of the staged energy dissipation buckling-restrained brace based on the origami configuration uses the staged energy dissipation buckling-restrained brace based on the origami configuration as described in the first aspect, and comprises the following steps.

[0019] When the energy dissipation structure is plastically deformed, the relative displacement between the first limb member and the second limb member is limited, so that the shear deformation occurs between the first core plate and the first limb member and between the second core plate and the second limb member.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] In the application, the damper of the periodic origami configuration structure is arranged on the support mechanism, the damper comprises the first core plate and the second core plate which are connected to each other; the first core plate comprises a plurality of first limb members, the second core plate comprises a plurality of second limb members, the plurality of first limb members and the plurality of second limb members are arranged alternately, the energy dissipation structure is arranged between each group of adjacent first limb members and second limb members, and the energy dissipation structure is the periodic origami configuration structure. Under the working conditions of ordinary earthquakes or wind loads, etc., the energy dissipation structure alone participates in energy dissipation, and the periodic origami configuration structure is deformed to dissipate energy; under the working conditions of rare earthquakes or super typhoons, etc., the plurality of first limb members and the plurality of second limb members arranged alternately are relatively displaced, the shear deformation occurs between the first core plate and the first limb member and between the second core plate and the second limb member, and the core plate participates in energy dissipation and plays a leading role, which is suitable for ordinary earthquakes or wind, and a plurality of conditions of large earthquakes or wind loads, and the structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings which form a part of this specification are included to provide a further understanding of embodiments of the application, and are incorporated in and constitute a part of this specification. The embodiments of these drawings are set forth to explain the embodiments of the present application and are not intended to limit the present application unduly.

[0023] Figure 1 It is a whole structure schematic diagram of the embodiment 1 of the application;

[0024] Figure 2 Schematic diagram of the damper structure of Example 1 of the present application;

[0025] Figure 3 Schematic diagram of the damper structure of Example 1 of the present application; Figure 2 Schematic diagram of the damper structure of Example 1 of the present application;

[0026] Figure 4 Schematic diagram of the damper structure of Example 1 of the present application; Figure 2 Schematic diagram of the damper structure of Example 1 of the present application;

[0027] Figure 5 Schematic diagram of the damper structure of Example 1 of the present application; Figure 4 Schematic diagram of the damper structure of Example 1 of the present application;

[0028] Figure 6 Schematic diagram of the damper structure of Example 1 of the present application; Figure 2 Schematic diagram of the damper structure of Example 1 of the present application;

[0029] Figure 7 Schematic diagram of the damper structure of Example 1 of the present application; Figure 2 Schematic diagram of the damper structure of Example 1 of the present application;

[0030] Figure 8 Schematic diagram of the damper structure of Example 1 of the present application; Figure 7 Schematic diagram of the damper structure of Example 1 of the present application;

[0031] Figure 9 Schematic diagram of the damper structure of Example 1 of the present application;

[0032] Figure 10 Schematic diagram of the damper structure of Example 1 of the present application; Figure 9 Schematic diagram of the damper structure of Example 1 of the present application;

[0033] Figure 11 Schematic diagram of the damper structure of Example 1 of the present application;

[0034] Figure 12 Schematic diagram of the damper structure of Example 1 of the present application; Figure 11 Schematic diagram of the damper structure of Example 1 of the present application;

[0035] Figure 13 Schematic diagram of the damper structure of Example 1 of the present application;

[0036] Figure 14 Schematic diagram of the damper structure of Example 1 of the present application;

[0037] Figure 15 Schematic diagram of the damper structure of Example 1 of the present application;

[0038] Figure 16 Schematic diagram of the damper structure of Example 1 of the present application;

[0039] Figure 17Fig. 1 is a schematic view of a periodic folded paper structure after processing and molding according to an embodiment of the present application;

[0040] 1, support mechanism; 101, first steel column; 102, second steel column; 103, first cross beam; 104, second cross beam; 105, first support; 106, second support; 2, damper; 201, first core plate; 2011, first main core plate; 2012, first limb; 2013, first butt joint hole; 2014, first baffle; 2015, second baffle; 202, second core plate; 2021, second main core plate; 2022, second limb; 2023, third baffle; 2024, fourth baffle; 203, first connecting plate; 2031, first limiting plate; 2032, second limiting plate; 2033, back plate; 2034, top plate; 2035, bottom plate; 2036, first side plate; 2037, second side plate; 204, second connecting plate; 2041, third limiting plate; 2042, fourth limiting plate; 205, third connecting plate; 2051, main body plate; 2052, second butt joint hole; 206, energy dissipation structure; 2061, periodic folded paper structure; 20611, unit plate; 20612, convex fold; 20613, concave fold; 20614, connecting fold; 2062, first positioning angle steel; 2063, second positioning angle steel; 2064, first connecting piece; 2065, second connecting piece; 207, sealing gasket; 208, buffer pad; 3, first connecting block; 4, second connecting block. DETAILED DESCRIPTION

[0041] The application will be further described below in conjunction with the drawings and embodiments.

[0042] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0043] Embodiment 1:

[0044] As a device for reducing vibration or dissipating energy, dampers are widely used in building structure seismic resistance, cable vibration reduction of cable-stayed bridges, automobiles and aerospace fields. Similarly, buckling-restrained braces, as an excellent energy dissipation and seismic reduction device, have been widely used. In recent years, various multi-stage energy dissipation dampers and buckling-restrained braces have been proposed by relevant experts. Multi-stage design makes the support elastic at small amplitude and enters the elastic-plastic state at large amplitude, thereby prolonging its service life and performance stability, making it more widely applicable and able to flexibly meet various engineering requirements.

[0045] However, the multi-stage buckling-restrained energy dissipation brace currently proposed still has some problems. For example, the matching and coordination between the yield segments: different yield segments need to be accurately matched and coordinated in design to ensure that they can be activated step by step and effectively dissipate energy under different seismic intensities; if the yield segments are not designed properly or the yield strengths differ too much, the expected energy dissipation effect may not be achieved in actual earthquakes, and even damage to the brace components may occur. Stability and reliability of the energy dissipation segment: under the action of small amplitude vibration or typhoon, the weaker yield segment must be able to stably deform plastically and dissipate energy without premature failure or instability; this requires consideration of the strength, deformation capacity of the material, and the actual stress state of the working environment in the design. Stress concentration and fatigue problem: in the multi-stage design, the stronger yield segment may be subjected to high stress levels in rare but more intense earthquakes; if the stress distribution and stress concentration of the stronger yield segment are not effectively controlled in the design, there may be a risk of material fatigue and premature failure.

[0046] Paper folding structure is a three-dimensional structure created by folding, forging and other methods using flat materials, which is characterized by great flexibility and excellent spatial transformation capability. In recent years, paper folding configuration has been increasingly widely used in the fields of science and engineering due to its superior mechanical properties, reconfigurability and energy dissipation capacity. Through reasonable configuration design, paper folding configuration can also form an elastic periodic structure, which not only has energy dissipation capacity similar to that of a damper, but also is a kind of metamaterial mechanism with effective blocking of vibrations of specific frequencies; the characteristics of this periodic structure enable it not only to provide strong energy dissipation capacity, but also to meet the demand for vibration suppression and frequency selection performance in engineering practice.

[0047] As described in the background, the buckling-restrained brace with damper currently used in thermal power plants and other fields improves the seismic performance, but it can only adapt to ordinary earthquakes or wind load conditions and cannot exhibit good seismic performance in the case of large earthquakes or wind loads. If the structural complexity of the damper is further increased to improve the seismic performance, it will bring problems such as structural complexity, high cost, and waste of resources in terms of design and materials.

[0048] To solve at least one of the above problems, the present embodiment provides a multi-stage energy dissipation buckling-restrained brace based on paper folding configuration, which combines a damper with a buckling-restrained brace to take advantage of the buckling-restrained energy dissipation brace and the paper folding structure energy dissipation, and can be widely used in the main plant of thermal power plants, as well as other industrial plants, building structures, bridges and non-structural components, etc. It has the characteristics of multi-stage energy dissipation and blocking of vibrations of specific frequencies, and can meet the energy dissipation work under different working conditions.

[0049] As Figure 1As shown, the phase energy dissipation buckling-restrained brace based on the origami configuration provided in the embodiment comprises a support mechanism 1 and a damper 2 arranged on the support mechanism 1 through a first connecting block 3 and a second connecting block 4.

[0050] Optionally, as shown in the figure, Figure 1 As shown, the support mechanism 1 comprises a first steel column 101 and a second steel column 102 which are parallel to each other, and a first cross beam 103 and a second cross beam 104 which are arranged vertically at both ends of the first steel column 101 and the second steel column 102; the connection between the first cross beam 103 and the first steel column 101 is arranged obliquely with a first support 105, and the connection between the second cross beam 104 and the second steel column 102 is arranged obliquely with a second support 106; the first support 105 and the second support 106 are connected with the second cross beam 104 through the damper 2.

[0051] As shown in the figure, Figure 2 As shown, the damper 2 comprises a first core plate 201 and a second core plate 202 which are connected with each other; the first core plate 201 comprises a plurality of first limbs 2012, the second core plate 202 comprises a plurality of second limbs 2022, and the plurality of first limbs 2012 and the plurality of second limbs 2022 are arranged alternately, and each group of adjacent first limbs 2012 and second limbs 2022 is arranged with an energy dissipation structure 206; the energy dissipation structure 206 is a periodic origami configuration structure.

[0052] As can be understood, the first core plate 201 is connected with the second cross beam 104 through the first connecting block 3, and the second core plate 202 is connected with the first cross beam 103 through the second connecting block 4; the energy dissipation structure 206 is arranged between the first connecting block 3 and the second connecting block 4; the first connecting block 3 and the second connecting block 4 can be arranged as a plate structure.

[0053] Optionally, as shown in the figure, Figure 1As shown, the first support 105 and the second support 106 can select commonly used steel structure support section, such as I-beam, double angle steel. The support is selected to be the same material as the first cross beam 103 and the second cross beam 104. The lower end of the first support 105 is connected with the first cross beam 103 and the first steel column 101; the lower end of the second support 106 is connected with the first cross beam 103 and the second steel column 102; the upper end of the damper 2 is connected with the second cross beam 104 by welding or other means, and the lower end is connected with the first support 105 and the second support 106 by welding or other means. The damper 2 transmits the horizontal force of the second cross beam 104 to the axial force of the first support 105 and the second support 106, effectively converts it into horizontal force in the damper 2, and dissipates energy in stages, which can effectively reduce the cross-sectional area of the first support 105 and the second support 106.

[0054] Optionally, as shown in Figure 2 As shown, the first core plate 201 includes a first main core plate 2011, and a plurality of first limbs 2012 are arranged on the first main core plate 2011; the second core plate 202 includes a second main core plate 2021, and a plurality of second limbs 2022 are arranged on the second main core plate 2021; the two ends of the first core plate 201 are connected with the second core plate 202 through a first connecting plate 203 and a second connecting plate 204 respectively.

[0055] In order to prevent out-of-plane instability of the first main core plate 2011, the second main core plate 2021 and the energy dissipation structure 206 and excessive relative displacement in the plane, the first connecting plate 203 is arranged. As shown in Figure 13 As shown, the first connecting plate 203 includes a back plate 2033, and a first limiting plate 2031 and a second limiting plate 2032 are vertically arranged at the two ends of the back plate 2033; similarly, as shown in Figure 2 As shown, the second connecting plate 204 also includes a back plate, and a third limiting plate 2041 and a fourth limiting plate 2042 are vertically arranged at the two ends of the back plate. As shown in Figure 2 Figure 9 Figure 10 Figure 11 As shown in Figure 12 As shown, the first main core plate 2011 is provided with a first baffle plate 2014 corresponding to the second limiting plate 2032, and the second main core plate 2021 is provided with a third baffle plate 2023 corresponding to the first limiting plate 2031; the first main core plate 2011 is provided with a second baffle plate 2015 corresponding to the fourth limiting plate 2042, and the second main core plate 2021 is provided with a fourth baffle plate 2024 corresponding to the third limiting plate 2041.

[0056] ​​​Optionally, the first main core plate 2011 and the plurality of first limbs 2012 can be integrally cut during processing, or can be formed by welding. The first baffle 2014 and the second baffle 2015 are welded on the first main core plate 2011. The first main core plate 2011 can be made of hard steel material, and the second main core plate 2021 is constructed the same as the first main core plate 2011 but in the opposite installation direction.

[0057] Optionally, the contact area between the first main core plate 2011 and the first limb 2012 should be more than 1.8 times the contact area between the energy dissipation structure 206 and the first limb 2012. The contact area between the second main core plate 2021 and the second limb 2022 should be more than 1.8 times the contact area between the energy dissipation structure 206 and the second limb 2022.

[0058] Optionally, the first limiting plate 2031 is provided on the back plate 2033 by welding. The second baffle 2015 and the fourth baffle 2024 are respectively welded on the first main core plate 2011 and the second main core plate 2021. As shown in Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 13 The back plate 2033 is vertically provided with a top plate 2034 and a bottom plate 2035; the first limiting plate 2031, the second limiting plate 2032, the third limiting plate 2041 and the fourth limiting plate 2042 are provided with sealing gaskets 207 between the bottom plate 2035; the first baffle 2014, the second baffle 2015, the third baffle 2023 and the fourth baffle 2024 are provided with sealing gaskets 207 between the top plate 2034. The first baffle 2014 and the second limiting plate 2032, the third baffle 2023 and the first limiting plate 2031, the second baffle 2015 and the fourth limiting plate 2042, and the fourth baffle 2024 and the third limiting plate 2041 are all provided with buffer pads 208. Optionally, the sealing gaskets 207 are sealing materials, and the buffer pads 208 are flexible and compressible materials.

[0059] When the first main core plate 2011 and the second main core plate 2021 move relative to each other, the first baffle plate 2014 and the second limiting plate 2032, the third baffle plate 2023 and the first limiting plate 2031, the second baffle plate 2015 and the fourth limiting plate 2042, and the fourth baffle plate 2024 and the third limiting plate 2041 all move relative to each other, extruding the buffer pad 208. The first baffle plate 2014, the second baffle plate 2015, the third baffle plate 2023, and the fourth baffle plate 2024 are all provided with sealing pads 207 between them and the top plate 2034, ensuring airtightness and preventing the buffer pad 208 from being extruded or overflowing.

[0060] To prevent the first limb 2012, the second limb 2022, and the energy dissipation structure 206 from out-of-plane instability and excessive in-plane relative displacement, as shown in Figure 2 and Figure 14 In the embodiment, a third connecting plate 205 is provided. The third connecting plate 205 can be a rectangular plate that connects the first limb 2012 and the second limb 2022 together. Alternatively, the third connecting plate 205 is fixed on multiple second limbs 2022, and a plurality of second butt joints 2052 are formed on the main plate 2051 of the third connecting plate 205. A plurality of first butt joints 2013 corresponding to the plurality of second butt joints 2052 are formed on the plurality of first limbs 2012. The first butt joint 2013 and the second butt joint 2052 are both long holes, such as long circular bolt holes. The third connecting plate 205 is connected to the first limb 2012 by bolts and allows a certain amount of displacement sliding, and the relative displacement is not too large. The third connecting plate 205 is connected to the second limb 2022 by welding, thereby ensuring that the first limb 2012 and the second limb 2022 can slide relative to each other when the energy dissipation structure 206 is elastically compressed and deformed. When the energy dissipation structure 206 is plastically deformed, the relative displacement between the first limb 2012 and the second limb 2022 is limited, thereby causing the first main core plate 2011 and the first limb 2012 to shear and deform, and the second-stage energy dissipation device to dissipate energy.

[0061] As shown in Figure 15 Alternatively, the energy dissipation structure 206 includes a first connecting member 2064 and a second connecting member 2065 parallel to each other, a first positioning angle steel 2062 provided on the first connecting member 2064, a second positioning angle steel 2063 provided on the second connecting member 2065, and a periodic origami structure 2061 provided between the first positioning angle steel 2062 and the second positioning angle steel 2063. As shown inFigure 16 and Figure 17 As shown in FIG. 1, the energy dissipation structure 206 is composed of a periodic fold structure, which uses soft steel material, and the periodic fold structure 2061 includes a plurality of unit plates 20611, convex folds 20612 and concave folds 20613 arranged between the unit plates 20611, and the unit plates 20611 are provided with connecting folds 20614 at the ends. The fold and panel deformation has good energy dissipation capacity, and the periodic structure can block vibrations of a certain frequency, and the specific frequency can be adjusted by the parameters of the fold structure. The first core plate 201 and the second core plate 202 use hard steel material, and the relative horizontal deformation between the main core plate and the limb provides a second support for the buckling-restrained brace.

[0062] Optionally, each energy dissipation structure 206 includes one or more periodic fold structures 2061, which can use soft steel material and have good energy dissipation capacity through fold and panel deformation. The periodic fold structure 2061 has a band gap characteristic of blocking vibrations of a certain frequency. The band gap frequency and width can be analyzed by the Bloch wave method by using the equivalent bar-hinge model of the structure. The high and low frequency and width that can be suppressed by the periodic fold structure 2061 can be adjusted by changing the length a, width b, structure fold angle AB, panel material M1, and panel material M2 of the structure.

[0063] The periodic fold structure 2061 can adopt a Miura structure, and the material can be lead or soft steel, which is formed by hot rolling, forging, or segmented welding. The periodic fold structure 2061 is connected to the first positioning angle steel 2062 and the second positioning angle steel 2063 by welding or other effective methods, and then the first positioning angle steel 2062 and the second positioning angle steel 2063 are welded to the first connecting piece 2064 and the second connecting piece 2065; the first connecting piece 2064 and the second connecting piece 2065 can be welded to form a plate.

[0064] The unit plate 20611 of the energy dissipation fold structure itself generates compression and bending plastic deformation to dissipate energy; the material of the unit plate 20611 can be set as needed, and the stiffness size has an influence on the vibration frequency that can be suppressed by the periodic fold structure 2061 and the energy dissipation capacity of the structure; when the periodic fold structure 2061 deforms around the convex fold 20612, the concave fold 20613 and the connecting fold 20614, plastic deformation occurs at the convex fold 20612, the concave fold 20613 and the connecting fold 20614 to dissipate energy.

[0065] The energy dissipation buckling-restrained brace in the embodiment works in two stages. In the first stage, the energy dissipation structure 206 alone dissipates energy under the action of excess earthquake or wind load, and the periodic paper-folding structure 2061 deforms at the creases and panels to dissipate energy, causing the relative displacement between the first main core plate 2011 and the second main core plate 2021 and between the first limb 2012 and the second limb 2022. In the second stage, when the structure encounters a fortification earthquake or a rare earthquake or a super typhoon, the displacement of the structure further increases, and the first connecting plate 203 and the second connecting plate 204 limit the displacement between the first main core plate 2011 and the second main core plate 2021, and the third connecting plate 205 limits the relative displacement between the first limb 2012 and the second limb 2022, thereby limiting the energy dissipation structure 206 from being damaged by exceeding the limit deformation. At this time, the first main core plate 2011 and the first limb 2012, and the second main core plate 2021 and the second limb 2022 are sheared and deformed, and the core plate plays a leading role in energy dissipation.

[0066] The energy dissipation structure 206 has two energy dissipation modes. One is that the periodic paper-folding structure 2061 deforms around the convex creases 20612, concave creases 20613, and connecting creases 20614, and plastic deformation occurs at the convex creases 20612, concave creases 20613, and connecting creases 20614 to dissipate energy. The other is that the energy dissipation paper-folding structure unit plate 20611 itself produces compression and bending plastic deformation to dissipate energy.

[0067] One construction method or process of the embodiment is:

[0068] S1, prepare the materials needed to make the support.

[0069] S2, rust and oil removal processes are performed on the surface of the first main core plate 2011, the first limb 2012, and the third baffle 2023, a groove is formed on the first main core plate 2011, the first limb 2012, and the third baffle 2023, and the first core plate 201 is welded. A long circular hole is formed at the position corresponding to the first limb 2012 and the third connecting plate 205. If the material allows, the shape of the first main core plate 2011 and the first limb 2012 can also be cut integrally. The second main core plate 2021 is made by the same method, but no long circular hole is formed.

[0070] S3, the shape mold of the energy dissipation structure 206 is made of hard steel. The joint area of the main core plate and the core plate limb should be more than 1.8 times the cross-sectional area of the energy dissipation structure 206. The soft steel plate blank is processed, the soft steel plate is forged and pressed at high temperature, the periodic paper folding configuration structure 2061 is made, including a plurality of unit plates 20611, convex folds 20612, concave folds 20613 and connecting folds 20614; the core structure of the first stage energy dissipation is formed.

[0071] S4, install the first stage energy dissipation structure with the first limb 2012 on the left side and the second limb 2022 on the right side. The periodic paper folding configuration structure 2061 is connected to the first positioning angle steel 2062 and the second positioning angle steel 2063 through the connecting folds 20614 on both sides by welding or hot melting technology. The first positioning angle steel 2062 is connected to the first connecting piece 2064, and the second positioning angle steel 2063 is connected to the second connecting piece 2065. If there are multiple layers of periodic paper folding configuration structures 2061, they are connected in turn according to this method. Then, the first connecting piece 2064 is connected to the first limb 2012, and the second connecting piece 2065 is connected to the second limb 2022. If the sequence of the core plate limb on the left and right sides of the periodic paper folding configuration structure 2061 is opposite, the left and right directions of the positioning plate are also changed.

[0072] S5, repeat step S4, connect the energy dissipation structure 206 to the first core plate 201 and the second core plate 202.

[0073] S6, the surface of the third connecting plate 205 is treated by rust removal, oil removal and sand blasting, a long circular hole is opened in the position corresponding to the first limb 2012, and the first limb 2012 is connected through a bolt; the third connecting plate 205 is connected to the second limb 2022 through a weld. Ensure the out-of-plane stability of the first stage energy dissipation structure and the displacement restriction between the first limb 2012 and the second limb 2022.

[0074] S7, the top plate 2034, the first side plate 2036, the second side plate 2037, the bottom plate 2035, the back plate 2033 and the first limiting plate 2031 are subjected to rust removal, oil removal and sand blasting treatment. First, the first limiting plate 2031 is welded on the back plate 2033, and then the top plate 2034, the first side plate 2036, the second side plate 2037, the bottom plate 2035 and the back plate 2033 are welded into a limiting device. The first baffle 2014 and the second limiting plate 2032, the third baffle 2023 and the first limiting plate 2031, the second baffle 2015 and the fourth limiting plate 2042, and the fourth baffle 2024 and the third limiting plate 2041 are filled with compressed material. The first limiting plate 2031, the second limiting plate 2032, the third limiting plate 2041 and the fourth limiting plate 2042 are provided with sealing pads 207, such as filled sealing rubber strips, between the bottom plate 2035, to ensure that the compressed material is airtight. Then, the first side plate 2036 is welded with the second main core plate 2021, and the second side plate 2037 is welded with the first main core plate 2011. A stable and limiting device between the first main core plate 2011 and the second main core plate 2021 is formed.

[0075] S8, the damper 2 obtained in steps S1-S7 is transported to the use site. The upper end is connected to the second cross beam 104 by means of the first connecting block 3, using bolts or welds, and the lower end is connected to the first support 105 and the second support 106 by means of the second connecting block 4, using bolts or welds.

[0076] Example 2:

[0077] The embodiment provides a working method of a stage energy dissipation buckling-restrained brace based on a paper folding configuration, which uses the stage energy dissipation buckling-restrained brace based on the paper folding configuration as described in the embodiment 1, and includes the following steps:

[0078] When the energy dissipation structure 206 occurs plastic deformation, the relative displacement between the first limb 2012 and the second limb 2022 is limited, so that the shear deformation occurs between the first core plate 201 and the first limb 2012, and between the second core plate 202 and the second limb 2022.

[0079] The above only describes the preferred embodiments of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A phase -specific energy dissipation buckling -restrained brace based on origami configuration, characterized by, The support mechanism comprises a first steel column and a second steel column which are parallel to each other, and a first cross beam and a second cross beam which are vertically arranged at both ends of the first steel column; a first support is obliquely arranged at the connection between the first cross beam and the first steel column, and a second support is obliquely arranged at the connection between the second cross beam and the second steel column; the first support and the second support are connected with the second cross beam through the damper; The damper comprises a first core plate and a second core plate which are connected with each other; the first core plate comprises a plurality of first limbs, the second core plate comprises a plurality of second limbs, and the plurality of first limbs and the plurality of second limbs are arranged alternately, and a energy dissipation structure is arranged between each group of adjacent first limbs and second limbs; the energy dissipation structure is a periodic paper folding structure; The periodic paper folding structure comprises a plurality of unit plates, and a convex fold and a concave fold are arranged between the unit plates; A plurality of first limbs on the first core plate are arranged between a plurality of second limbs on the second core plate, and a third connecting plate is arranged therebetween; The third connecting plate is fixed on the plurality of second limbs, and a plurality of second butt joints are formed in the third connecting plate, and a plurality of first butt joints corresponding to the plurality of second butt joints are formed in the plurality of first limbs; the first butt joint and the second butt joint are both long holes. The first core plate comprises a first main core plate, and the plurality of first limbs are arranged on the first main core plate; the second core plate comprises a second main core plate, and the plurality of second limbs are arranged on the second main core plate; the two ends of the first core plate are connected with the second core plate through a first connecting plate and a second connecting plate respectively.

2. The origami configuration based phase -specific energy dissipation buckling - restrained brace according to claim 1, wherein, The first connecting plate comprises a back plate and a first limiting plate and a second limiting plate which are vertically arranged at both ends of the back plate; the second connecting plate comprises a back plate and a third limiting plate and a fourth limiting plate which are vertically arranged at both ends of the back plate; a first baffle corresponding to the second limiting plate is arranged on the first main core plate, and a third baffle corresponding to the first limiting plate is arranged on the second main core plate; a second baffle corresponding to the fourth limiting plate is arranged on the first main core plate, and a fourth baffle corresponding to the third limiting plate is arranged on the second main core plate.

3. The origami configuration based buckling-restrained phased energy dissipation brace according to claim 2, wherein, A top plate and a bottom plate are vertically arranged on the back plate; a sealing gasket is arranged between the first limiting plate, the second limiting plate, the third limiting plate, the fourth limiting plate and the bottom plate; a sealing gasket is arranged between the first baffle, the second baffle, the third baffle and the fourth baffle and the top plate.

4. The origami configuration based buckling-restrained phased energy dissipation brace according to claim 3, wherein, A buffer pad is arranged between the first baffle and the second limiting plate, between the third baffle and the first limiting plate, between the second baffle and the fourth limiting plate, and between the fourth baffle and the third limiting plate.

5. The origami configuration based buckling-restrained phased energy dissipation brace according to claim 3, wherein, The energy dissipation structure comprises a first connecting piece and a second connecting piece which are parallel to each other, a first positioning angle steel arranged on the first connecting piece, a second positioning angle steel arranged on the second connecting piece, and a periodic paper folding structure arranged between the first positioning angle steel and the second positioning angle steel.

6. The origami configuration based phase-sequential energy dissipation buckling- restrained brace according to claim 1, wherein, ​ 7. A method of working a phase-sequential energy-dissipating buckling-restrained brace based on a paper-folding configuration, characterized by, A stage-wise energy dissipation buckling-restrained brace based on the origami configuration as claimed in any one of claims 1-6 is used, comprising: When the energy dissipation structure plastically deforms, the relative displacement between the first limb and the second limb is limited, so that the shear deformation between the first core plate and the first limb, and between the second core plate and the second limb occurs.

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