Additional energy consumption control device for T-shaped modularized steel connecting piece
By using T-shaped modular steel connectors, combined with pin connections and frictional plastic deformation mechanisms, and employing asymmetric gradient materials and stress groove arrays, the problem of brittle failure of traditional steel structure nodes under seismic loading is solved, achieving high energy efficiency, long service life, and wide applicability, while also adapting to construction errors in prefabricated buildings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YANTAI JINWEI HARDWARE CO LTD
- Filing Date
- 2026-03-11
- Publication Date
- 2026-05-22
AI Technical Summary
Traditional steel structure nodes are prone to brittle failure due to stress concentration under seismic loading. They lack effective energy dissipation mechanisms, have low energy efficiency, limited material properties, poor structural adaptability, and are prone to multi-hazard coupled failure, making it difficult to meet the recoverable functional requirements of building seismic design codes.
It adopts T-shaped modular steel connectors, combined with pin-connected energy dissipation plates and frictional plastic deformation mechanism, using asymmetric gradient materials and stress groove array, and achieves flexible-rigid synergistic energy dissipation through magnesium-aluminum alloy matrix and three-dimensional mesh reinforcement phase. A four-way limiting system and linear array mounting holes are used to accommodate construction errors.
It significantly improves the seismic performance of nodes, increases energy consumption efficiency by 2.3 times, extends fatigue life by 3 times, improves installation efficiency by 60%, and enhances adaptability by 90%. Under an 8-degree earthquake, it can absorb more than 75% of the energy and protect the integrity of the main structure.
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Figure CN122071883A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of modular connector technology, specifically to an additional energy consumption control device for a T-shaped modular steel connector. Background Technology
[0002] With the rapid development of prefabricated steel structure buildings, the seismic performance of modular connectors has become a core concern in the engineering field. Traditional steel structure nodes mostly use rigid welding or bolt connections, which can ensure the integrity of the structure, but are prone to brittle failure due to stress concentration under seismic loads, and lack effective energy dissipation mechanisms. Existing technologies have the following problems: Low energy efficiency: Traditional metal dampers mostly use low-yield steel or lead-core rubber. The former has a large residual displacement after plastic deformation, and the latter has aging problems, making it difficult to meet the requirements of the "Code for Seismic Design of Buildings" for recoverable functional structures. Material limitations: While conventional aluminum alloy energy-consuming components offer the advantage of lightweight design, their fatigue life is only 10 years. 5 In the secondary cycle, grain boundary fracture is prone to occur under the repeated action of rare earthquakes; Poor structural adaptability: The current modular connectors have an installation tolerance of only ±5mm, which is difficult to adapt to the construction error of ±15mm in prefabricated buildings, and more than 80% of the models do not have adjustable energy consumption function. Multi-hazard coupled failure: Under the coupled action of chloride ion corrosion and seismic events, the corrosion fatigue strength of traditional galvanized steel connectors decreases by up to 60%. Summary of the Invention
[0003] To address this issue, the present invention provides an additional energy consumption control device for T-shaped modular steel connectors.
[0004] The present invention provides the following technical solution: a T-shaped modular steel connector with additional energy consumption control device, including a mounting plate, wherein a connecting component is fixedly provided on the right side of the mounting plate; The connecting component includes a first steel plate, the left side of which is fixedly connected to the right side of the mounting plate. An installation groove is provided on the right side of the first steel plate, and the groove wall is slidably connected to the surface of the mounting plate. A second steel plate is fixedly connected to the center of the top of the first steel plate. Pins are fixedly connected to both the left and right sides of the second steel plate, and energy-dissipating plates are rotatably connected to the surface of the pins.
[0005] As a preferred embodiment of the present invention, limit plates are fixedly connected to the left and right sides and the front and back sides of the top of the first steel plate, and a protective clamp is slidably connected to the surface of the energy-consuming sheet. Limiting grooves of the same specifications as the limit plates are opened on the left and right sides and the front and back sides of the bottom of the protective clamp. The groove wall of the limiting groove is slidably connected to the surface of the limit plate. A first mounting hole is opened through the top of the protective clamp, a second mounting hole is opened through the top of the second steel plate, a third mounting hole is opened through the center of the top of the first steel plate, a fourth mounting hole is opened through the right side of the top of the first steel plate, and a fifth mounting hole is opened through the top of the mounting plate.
[0006] As a preferred embodiment of the present invention, there are ten first mounting holes, two mounting holes, and three mounting holes, which are arranged in a linear array. The ten first mounting holes, two mounting holes, and three mounting holes have the same diameter. The centers of a single group of first mounting holes, two mounting holes, and three mounting holes are located on the same vertical line. A second bolt is slidably connected inside the first mounting holes, two mounting holes, and three mounting holes, and a second nut is threaded onto the surface of the second bolt.
[0007] In a preferred embodiment of the present invention, there are seven fourth mounting holes and seven fifth mounting holes, which are arranged in a linear array. A first bolt is slidably connected to the inner wall of the fourth mounting hole, and a first nut is threaded onto the surface of the first bolt.
[0008] As a preferred embodiment of the present invention, the energy-consuming sheet includes a substrate, which comprises, by mass percentage: 55%–68% aluminum, 10%–12% magnesium, 6%–10% copper, 4%–7% zinc, 0.3%–1.2% scandium and 0.2%–0.8% erbium, with the balance being ≤0.5% iron and unavoidable impurities; The matrix is dispersed with a three-dimensional network reinforcement phase, comprising: micron-sized β-Al3Mg2 intermetallic compounds and nano-sized Al2O3 / MgO core-shell structured particles. The micron-sized β-Al3Mg2 intermetallic compounds have a particle size of 2-8 μm and a volume fraction of 8%-15%. The Al2O3 core of the nano-sized Al2O3 / MgO core-shell structured particles has a diameter of 50-150 nm, a MgO shell thickness of 20-50 nm, and a volume fraction of 3%-8%. The matrix has an asymmetric gradient structure, comprising: a bending energy dissipation layer, an interface coordination layer, and a tear-resistant layer. The bending energy dissipation layer has a thickness of 60%–70%, a Vickers hardness of 120–150 HV, an elastic modulus of 45–55 GPa, and contains oriented lamellar β phases. The interface coordination layer has a thickness of 20%–30%, a Vickers hardness of 180–220 HV, an elastic modulus of 65–75 GPa, and contains equiaxed β phases and Al₂O₃. The tear-resistant layer has a co-distributed network of Al2O3 / MgO particles, with a thickness of 5% to 10%, a Vickers hardness of 280-320 HV, an elastic modulus of 85-95 GPa, and a continuous honeycomb Al2O3 / MgO skeleton structure. The bending energy dissipation layer contains a pre-placed array of stress concentration grooves, with a groove depth of 0.1-0.3 mm, a spacing of 3-5 mm between two stress concentration groove arrays, and the direction of the stress concentration groove array forms an angle of 30°-60° with the propagation direction of the main shock wave.
[0009] As a preferred embodiment of the present invention, the mass ratio of Sc to Er in the matrix is controlled between 1.5:1 and 2.5:1, and dynamic recrystallization is suppressed by the Sc-Er-Al ternary coherent precipitate, with a room temperature elongation ≥25%; The β-Al3Mg2 phase has a preferred orientation, with its crystal plane having an angle ≤15° with the normal of the matrix surface, and the activation energy of the dislocation slip system is reduced to 80-100kJ / mol. The interfacial bonding strength of the Al2O3 / MgO core-shell particles is ≥400MPa, and the following synergistic effects are generated during plastic deformation: the MgO shell preferentially undergoes twinning deformation, the Al2O3 core induces microcrack deflection, and a nanoscale MgAl2O4 transition layer is formed at the core-shell interface.
[0010] As a preferred embodiment of the present invention, the stress concentration trench array has a V-shaped cross-section, a bottom curvature radius of 50-100μm, and nanoscale corrugated structures on both sides of the trench.
[0011] Compared with the prior art, the beneficial effects of the present invention are: In this invention, an energy-dissipating plate connected by a pin shaft combines friction and plastic deformation mechanisms, absorbing over 75% of energy under an 8-degree earthquake. This represents a 2.3-fold increase in energy dissipation efficiency compared to traditional devices. By synergistically guiding plastic deformation through asymmetric gradient materials and stress groove arrays, 95% of energy dissipation is concentrated in the energy-dissipating plate, protecting the integrity of the main structure. Furthermore, Sc-Er microalloying and core-shell particle reinforcement enhance the fatigue life to 10 years. 7The cycle life is three times longer than that of conventional aluminum alloys, achieving 50 years of maintenance-free operation. The installation efficiency is improved by 60% through a four-way limiting system and linear array mounting holes, and it is compatible with more than 90% of steel structure nodes. The micron-level β-Al3Mg2 phase preferential orientation reduces dislocation activation energy, and the nano core-shell particle interface generates twinning deformation and crack deflection. V-grooves and nano-waves synergistically optimize stress distribution and improve energy consumption stability by 20%. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the bottom structure in the middle; Figure 3 For the present invention Figure 1 A schematic diagram of the side structure in the middle; Figure 4 For the present invention Figure 1 Exploded view of the overall structure in the image; Figure 5 For the present invention Figure 1 A schematic diagram of a local structure in the image; Figure 6 For the present invention Figure 5 A partial structural plan view; Figure 7 For the present invention Figure 5 Bottom structure plan view; Figure 8 This is a partial cross-sectional view of the energy-consuming sheet structure of the present invention.
[0013] In the diagram: 1. Connecting component; 2. Mounting plate; 3. Fifth mounting hole; 4. Protective clamping plate; 5. Energy dissipation plate; 6. First mounting hole; 7. Limiting groove; 101. First steel plate; 102. Mounting groove; 103. First bolt; 104. First nut; 105. Second bolt; 106. Fourth mounting hole; 107. Second steel plate; 108. Limiting plate; 109. Second mounting hole; 110. Pin; 111. Second nut; 112. Third mounting hole; 501. Matrix; 502. Three-dimensional mesh reinforcement phase; 50101. Tear-resistant layer; 50102. Interface coordination layer; 50103. Bending energy dissipation layer; 50104. Stress concentration groove array. Detailed Implementation
[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0015] Please see Figures 1-8 The technical solution provided by the present invention specifically includes the following embodiments: Example: A T-shaped modular steel connector with additional energy consumption control device, including a mounting plate 2, and a connecting component 1 fixedly provided on the right side of the mounting plate 2; The connecting component 1 includes a first steel plate 101, the left side of the first steel plate 101 is fixedly connected to the right side of the mounting plate 2, the right side of the first steel plate 101 is provided with a mounting groove 102, the groove wall of the mounting groove 102 is slidably connected to the surface of the mounting plate 2, a second steel plate 107 is fixedly connected to the center of the top of the first steel plate 101, and pins 110 are fixedly connected to both the left and right sides of the second steel plate 107, and energy dissipation plates 5 are rotatably connected to the surface of the pins 110. The T-shaped modular design enables multi-directional energy dissipation, and the pin connection gives the energy dissipation plate 5 degrees of rotational freedom. By utilizing the dual energy dissipation mechanism of friction and plastic deformation, the seismic performance of the node is significantly improved.
[0016] Under earthquake action, the energy dissipation plate 5 rotates around the pin 110 to generate interfacial friction and undergoes plastic bending deformation, converting earthquake energy into heat energy for dissipation. The sliding connection between the mounting groove 102 and the mounting plate 2 facilitates the assembly of the two T-shaped modules. When lateral vibration occurs, the energy dissipation plate 5 generates a reciprocating rotation of 15-25°, consuming energy through dislocation slip of the magnesium-aluminum alloy matrix and interfacial friction.
[0017] Limiting plates 108 are fixedly connected to the top left and right sides and the front and back sides of the first steel plate 101. A protective clamping plate 4 is slidably connected to the surface of the energy dissipation plate 5. Limiting grooves 7 of the same specifications as the limiting plates 108 are opened on the bottom left and right sides and the front and back sides of the protective clamping plate 4. The groove wall of the limiting groove 7 is slidably connected to the surface of the limiting plate 108. A first mounting hole 6 is opened through the top of the protective clamping plate 4. A second mounting hole 109 is opened through the top of the second steel plate 107. A third mounting hole 112 is opened through the center of the top of the first steel plate 101. A fourth mounting hole 106 is opened through the right side of the top of the first steel plate 101. A fifth mounting hole 3 is opened through the top of the mounting plate 2. The four-way limiting system forms a three-dimensional constraint. The protective clamp 4 and the limiting groove 7 cooperate to ensure the stable deformation of the energy dissipation piece. Multiple sets of mounting holes enable rapid modular assembly. The limiting plate 108 and the limiting groove 7 are fitted with a clearance (0.5-1mm clearance), allowing the energy dissipation piece 5 to rotate to a limited extent while preventing dislocation. The first mounting hole 6 and the second mounting hole 109 form a double fixing point to improve the reliability of the connection.
[0018] There are ten first mounting holes 6, second mounting holes 109 and third mounting holes 112. The ten first mounting holes 6, second mounting holes 109 and third mounting holes 112 are arranged in a linear array. The ten first mounting holes 6, second mounting holes 109 and third mounting holes 112 have the same diameter. The center of a single group of first mounting holes 6, second mounting holes 109 and third mounting holes 112 is located on the same vertical line. A second bolt 105 is slidably connected inside the first mounting holes 6, second mounting holes 109 and third mounting holes 112. A second nut 111 is threaded onto the surface of the second bolt 105. There are seven fourth mounting holes 106 and seven fifth mounting holes 3. The seven fourth mounting holes 106 and five mounting holes 3 are arranged in a linear array. The inner wall of the fourth mounting hole 106 is slidably connected to a first bolt 103, and the surface of the first bolt 103 is threadedly connected to a first nut 104. The linear array mounting holes, combined with standard bolts, form an adjustable connection system, allowing for ±30mm of positional adjustment to accommodate connections of components of different sizes. The second bolt 105 passes through three holes to create a three-point constraint, and the rotational resistance of the energy dissipation element is controlled by adjusting the preload of the nut (20-30kN recommended). The seven-hole layout of the fourth mounting hole 106 allows for adjustable spacing between connectors from 50 to 200mm.
[0019] The energy-consuming plate 5 includes a substrate 501, which, by mass percentage, comprises: 55%–68% aluminum, 10%–12% magnesium, 6%–10% copper, 4%–7% zinc, 0.3%–1.2% scandium and 0.2%–0.8% erbium, with the balance being ≤0.5% iron and unavoidable impurities; The matrix 501 disperses a three-dimensional network reinforcing phase 502, comprising: micron-sized β-Al3Mg2 intermetallic compounds and nano-sized Al2O3 / MgO core-shell structured particles. The micron-sized β-Al3Mg2 intermetallic compounds have a particle size of 2-8 μm and a volume fraction of 8%-15%. The Al2O3 core of the nano-sized Al2O3 / MgO core-shell structured particles has a diameter of 50-150 nm, a MgO shell thickness of 20-50 nm, and a volume fraction of 3%-8%. The matrix 501 has an asymmetric gradient structure, comprising: a bending energy dissipation layer 50103, an interface coordination layer 50102, and a tear-resistant layer 50101. The bending energy dissipation layer 50103 has a thickness of 60%–70%, a Vickers hardness of 120–150 HV, an elastic modulus of 45–55 GPa, and contains oriented lamellar β phases. The interface coordination layer 50102 has a thickness of 20%–30%, a Vickers hardness of 180–220 HV, an elastic modulus of 65–75 GPa, and contains equiaxed β phases. The tear-resistant layer 50101, which is co-distributed with Al2O3 / MgO particles, has a thickness of 5%–10%, a Vickers hardness of 280–320 HV, an elastic modulus of 85–95 GPa, and a continuous honeycomb Al2O3 / MgO skeleton structure. The bending energy dissipation layer 50103 has a pre-placed stress concentration groove array 50104 with a groove depth of 0.1–0.3 mm, a spacing of 3–5 mm between two stress concentration groove arrays 50104, and an angle of 30°–60° between the direction of the stress concentration groove array 50104 and the direction of the main shock wave propagation. The asymmetric gradient structure achieves flexible-rigid synergistic energy dissipation, the three-dimensional reinforcing phase improves energy dissipation efficiency by more than 40%, the stress groove array directionally guides plastic deformation, the bending layer 50103 dissipates energy through the sliding of the β phase layer, the co-distributed network of the coordination layer 50102 delays crack propagation, and the honeycomb skeleton of the tear-resistant layer 50101 bears the main stress.
[0020] In matrix 501, the mass ratio of Sc to Er is controlled between 1.5:1 and 2.5:1, and dynamic recrystallization is suppressed through the Sc-Er-Al ternary coherent precipitate, with a room temperature elongation ≥25%. The β-Al3Mg2 phase has a preferred orientation, with its crystal plane having an angle ≤15° with the normal of the 501 matrix surface, and the activation energy of the dislocation slip system is reduced to 80-100 kJ / mol; The interfacial bonding strength of Al2O3 / MgO core-shell particles is ≥400MPa, and the following synergistic effects are generated during plastic deformation: the MgO shell preferentially undergoes twinning deformation, the Al2O3 core initiates microcrack deflection, and a nanoscale MgAl2O4 transition layer is formed at the core-shell interface. Sc-Er synergistic regulation extends fatigue life by 3 times. Core-shell particles generate multiple energy-consuming mechanisms, dislocation activation energy is reduced and plastic deformation capacity is improved, MgO shell twin deformation absorbs energy (about 15J / g), Al2O3 core deflects crack path, and MgAl2O4 transition layer (2-5nm thick) generated at the interface enhances interface bonding.
[0021] The stress concentration trench array 50104 has a V-shaped cross-section, a bottom curvature radius of 50-100μm, and nanoscale corrugated structures on both sides of the trench. V-grooves reduce the stress concentration factor to 1.8-2.2, while nano-waves generate micro-region turbulence, improving energy consumption stability by more than 20%. The groove curvature radius of 80μm optimizes stress distribution, and the wave structure (wavelength 200-500nm) promotes dislocation multiplication, forming controllable microcrack initiation points.
[0022] In this invention, the device adopts a T-shaped modular structure. The core consists of a mounting plate 2 and a connecting component 1. The energy-consuming plate 5 is connected by a pin 110 to achieve rotational freedom. Combined with the sliding connection of the mounting groove 102 and the four-way limiting system, the limiting plate 108 and the limiting groove 7, a multi-directional energy-consuming mechanism is formed. The modular design supports rapid assembly. The first to fifth mounting holes of the mounting hole system allow for ±30mm position adjustment and 50-200mm spacing adjustment, and are compatible with more than 90% of standard steel structure nodes. Energy dissipation plate 5 uses a magnesium-aluminum alloy substrate 501, whose composition is an Al-Mg-Cu-Zn-Sc-Er system. It achieves flexible-rigid synergistic energy dissipation through an asymmetric gradient structure. The bending energy dissipation layer 50103 has a thickness of 60% to 70% and a Vickers hardness of 120-150 HV. It contains an oriented β phase layer and dissipates energy through plastic slip. The interface coordination layer 50102 has a thickness of 20% to 30% and a hardness of 180-220 HV. It contains a network of β phase and Al2O3 / MgO particles that are co-distributed to delay crack propagation. The tear-resistant layer 50101 has a thickness of 5% to 10% and a hardness of 280-320HV. It contains a honeycomb Al2O3 / MgO skeleton and bears the principal stress. The three-dimensional reinforcing phase 502 includes: micron-sized β-Al3Mg2 phase 8-15 vol%: preferential orientation design with crystal plane angle ≤15°, reducing dislocation activation energy to 80-100 kJ / mol; 3-8 vol% of nano-Al2O3 / MgO core-shell particles: core Al2O3 50-150 nm + shell MgO 20-50 nm, with a 2-5 nm thick MgAl2O4 transition layer formed at the interface, with a bonding strength ≥400 MPa, synergistically achieving 15 J / g energy absorption and crack deflection in twinning deformation. Stress concentration trench array 50104: V-shaped cross-section trenches with a depth of 0.1-0.3mm and a spacing of 3-5mm, forming an angle of 30°-60° with the direction of seismic wave propagation. Combined with a nano-corrugated structure with a wavelength of 200-500nm, it reduces the stress concentration factor to 1.8-2.2 and improves the dislocation multiplication efficiency. Sc-Er synergistic regulation: Sc:Er mass ratio of 1.5:1-2.5:1 forms Sc-Er-Al ternary coherent precipitates, inhibits dynamic recrystallization, and makes room temperature elongation ≥25% and fatigue life 3 times longer; Multiple energy dissipation mechanisms of core-shell particles: MgO shell twinning deformation to Al2O3 core crack deflection to interface MgAl2O4 reinforcement, realizing multi-level energy dissipation; This invention achieves the following effects: High energy efficiency: The friction coefficient of the friction interface is 0.3-0.5, which works synergistically with plastic deformation, resulting in an energy consumption efficiency 2.3-2.8 times that of traditional supports. It can absorb more than 75% of the energy under a rare earthquake of magnitude 8. Long life design: The material has excellent fatigue resistance, requiring no replacement for 50 years, and can withstand 10 cycles of loading. 7 Subsequent performance degradation <5%; Wide applicability: Suitable for prefabricated buildings, large-span venues, and other scenarios, reducing installation time by 60% compared to traditional solutions; Controllable failure mode: Stress grooves guide plastic deformation to concentrate on the energy dissipation plate, protecting the integrity of the main structure.
[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.
Claims
1. A T-shaped modular steel connector with an additional energy consumption control device, characterized in that: Includes a mounting plate (2), and a connecting component (1) is fixedly provided on the right side of the mounting plate (2); The connecting component (1) includes a first steel plate (101), the left side of the first steel plate (101) is fixedly connected to the right side of the mounting plate (2), the right side of the first steel plate (101) is provided with a mounting groove (102), the groove wall of the mounting groove (102) is slidably connected to the surface of the mounting plate (2), a second steel plate (107) is fixedly connected to the center of the top of the first steel plate (101), and pins (110) are fixedly connected to both the left and right sides of the second steel plate (107), and energy dissipation plates (5) are rotatably connected to the surface of the pins (110).
2. The T-shaped modular steel connector energy consumption control device according to claim 1, characterized in that: Limiting plates (108) are fixedly connected to the top left and right sides and the front and back sides of the first steel plate (101). A protective clamp (4) is slidably connected to the surface of the energy-consuming sheet (5). Limiting grooves (7) of the same specifications as the limiting plate (108) are opened on the bottom left and right sides and the front and back sides of the protective clamp (4). The groove wall of the limiting groove (7) is slidably connected to the surface of the limiting plate (108). A first mounting hole (6) is opened through the top of the protective clamp (4). A second mounting hole (109) is opened through the top of the second steel plate (107). A third mounting hole (112) is opened through the center of the top of the first steel plate (101). A fourth mounting hole (106) is opened through the right side of the top of the first steel plate (101). A fifth mounting hole (3) is opened through the top of the mounting plate (2).
3. The T-shaped modular steel connector energy consumption control device according to claim 2, characterized in that: There are ten first mounting holes (6), second mounting holes (109) and third mounting holes (112). The ten first mounting holes (6), second mounting holes (109) and third mounting holes (112) are arranged in a linear array. The ten first mounting holes (6), second mounting holes (109) and third mounting holes (112) have the same diameter. The centers of a single set of first mounting holes (6), second mounting holes (109) and third mounting holes (112) are located on the same vertical line. A second bolt (105) is slidably connected inside the first mounting hole (6), second mounting hole (109) and third mounting hole (112). A second nut (111) is threaded onto the surface of the second bolt (105).
4. The T-shaped modular steel connector energy consumption control device according to claim 2, characterized in that: The number of the fourth mounting hole (106) and the fifth mounting hole (3) are both seven. The seven fourth mounting holes (106) and the fifth mounting holes (3) are arranged in a linear array. The inner wall of the fourth mounting hole (106) is slidably connected to a first bolt (103), and the surface of the first bolt (103) is threadedly connected to a first nut (104).
5. The T-shaped modular steel connector energy consumption control device according to claim 1, characterized in that: The energy-consuming plate (5) includes a substrate (501), which comprises, by mass percentage: 55%–68% aluminum, 10%–12% magnesium, 6%–10% copper, 4%–7% zinc, 0.3%–1.2% scandium and 0.2%–0.8% erbium, with the balance being ≤0.5% iron and unavoidable impurities; The matrix (501) disperses a three-dimensional network reinforcement phase (502), comprising: micron-sized β-Al3Mg2 intermetallic compound and nano-sized Al2O3 / MgO core-shell structured particles. The micron-sized β-Al3Mg2 intermetallic compound has a particle size of 2-8 μm and a volume fraction of 8%-15%. The Al2O3 core of the nano-sized Al2O3 / MgO core-shell structured particles has a diameter of 50-150 nm, a MgO shell thickness of 20-50 nm, and a volume fraction of 3%-8%. The substrate (501) has an asymmetric gradient structure, comprising: a bending energy dissipation layer (50103), an interface coordination layer (50102), and a tear-resistant layer (50101). The bending energy dissipation layer (50103) has a thickness of 60%–70%, a Vickers hardness of 120–150 HV, an elastic modulus of 45–55 GPa, and contains oriented lamellar β phases. The interface coordination layer (50102) has a thickness of 20%–30%, a Vickers hardness of 180–220 HV, an elastic modulus of 65–75 GPa, and contains oriented lamellar β phases. The tear-resistant layer (50101) has a thickness of 5% to 10%, a Vickers hardness of 280-320 HV, an elastic modulus of 85-95 GPa, and a continuous honeycomb Al2O3 / MgO skeleton structure. The bending energy dissipation layer (50103) contains a pre-placed stress concentration groove array (50104). The groove depth of the stress concentration groove array (50104) is 0.1-0.3 mm, the spacing between two stress concentration groove arrays (50104) is 3-5 mm, and the direction of the stress concentration groove array (50104) forms an angle of 30°-60° with the propagation direction of the main shock wave.
6. The T-shaped modular steel connector energy consumption control device according to claim 5, characterized in that: The mass ratio of Sc to Er in the matrix (501) is controlled between 1.5:1 and 2.5:1, and dynamic recrystallization is suppressed by the Sc-Er-Al ternary coherent precipitate, with a room temperature elongation ≥25%; The β-Al3Mg2 phase has a preferred orientation, and the angle between its crystal plane and the normal of the matrix (501) surface is ≤15°, and the activation energy of the dislocation slip system is reduced to 80-100kJ / mol; The interfacial bonding strength of the Al2O3 / MgO core-shell particles is ≥400MPa, and the following synergistic effects are generated during plastic deformation: the MgO shell preferentially undergoes twinning deformation, the Al2O3 core induces microcrack deflection, and a nanoscale MgAl2O4 transition layer is formed at the core-shell interface.
7. The T-shaped modular steel connector additional energy consumption control device according to claim 5, characterized in that: The stress concentration trench array (50104) has a V-shaped cross-section, a bottom curvature radius of 50-100μm, and nanoscale corrugated structures on both sides of the trench.