Energy dissipation type connecting beam

Abstract

The present invention relates to an energy-absorbing type connecting beam, comprising a yielding energy-absorbing component and an eddy current damping energy-absorbing component connected to the connecting beam end plate, wherein the yielding energy-absorbing component comprises a first yielding part and a second yielding part, wherein the eddy current damping energy-absorbing component is located between the first yielding part and the second yielding part, wherein the eddy current damping energy-absorbing component comprises a gear, a meshing part meshing with the gear, a cutting plate and a magnetic pole body, wherein the gear, the cutting plate and the magnetic pole body are coaxially arranged, the magnetic pole body is connected to one connecting beam end plate, the meshing part is connected to another connecting beam end plate, when the two connecting beam end plates are displaced, the yielding energy-absorbing component consumes energy, the meshing part drives the gear to rotate, and the gear drives the cutting plate to cut the magnetic flux lines, thereby realizing the energy consumption of the eddy current damping energy-absorbing component. Compared with the prior art, the eddy current damping effect is significant, and full-stage energy consumption can be realized, and it is easy to quickly replace after an earthquake, and it is easy to change the energy consumption effect.

Description

Technical Field

[0001] The invention relates to the field of earthquake resistance and disaster prevention and reduction of civil engineering structures, and in particular to an energy-absorbing coupling beam. Background Art

[0002] Reinforced concrete shear walls are one of the most widely used lateral force components in high-rise and super high-rise buildings. Shear walls often bear most of the seismic shear force of the entire structure. The seismic performance of shear walls is crucial to the seismic safety of the structure. The damage to shear walls after an earthquake is difficult to repair, causing huge economic losses, waste of resources and social impact. As an important component of the shear wall, the connecting beam connects the various wall limbs, which not only plays a role in regulating and ensuring the lateral stiffness of the shear wall, but also serves as the first line of defense against earthquakes and consumes seismic energy.

[0003] At present, it is difficult to manufacture eddy current dampers with large damping coefficients in energy-absorbing coupling beams. Summary of the invention

[0004] The purpose of the present invention is to provide an energy dissipation type coupling beam in order to overcome the defects of the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An energy-absorbing type connecting beam comprises a yielding energy-absorbing component and an eddy current damping energy-absorbing component connected to the connecting beam end plate, the yielding energy-absorbing component comprises a first yielding part and a second yielding part, the eddy current damping energy-absorbing component is located between the first yielding part and the second yielding part, the eddy current damping energy-absorbing component comprises a gear, a meshing part meshing with the gear, a cutting plate and a magnetic pole body, the gear, the cutting plate and the magnetic pole body are coaxially arranged, the magnetic pole body is connected to one connecting beam end plate, the meshing part is connected to the other connecting beam end plate, when the two connecting beam end plates are displaced, the yielding energy-absorbing component consumes energy, the meshing part drives the gear to rotate, and the gear drives the cutting plate to cut the magnetic flux lines, thereby realizing the energy consumption of the eddy current damping energy-absorbing component.

[0007] The eddy current damping energy dissipation component includes a multi-layer cutting plate and a multi-layer magnetic pole body, which are coaxially arranged at intervals. When the two connecting beam end plates are displaced, the gears drive the multi-layer cutting plate to cut the magnetic flux lines.

[0008] The magnetic pole body includes coaxial inner ring permanent magnets and outer ring permanent magnets within the coverage range of the cutting plate, the inner ring permanent magnets and outer ring permanent magnets are fixed to a fixed plate, the fixed plate is connected to a connecting beam end plate, the inner ring permanent magnets and outer ring permanent magnets have consistent radial magnetic pole directions, alternately change circumferential magnetic pole directions, and are consistent in axial magnetic pole directions.

[0009] The gear, cutting plate and fixing plate are connected via a shaft, the fixing plate is connected to the shaft via a bearing, and the cutting plate and the bearing are key-connected to the shaft.

[0010] The first yielding member and the second yielding member are I-shaped steels with through holes in the web, and the web is detachably connected to the end plate of the connecting beam through the end plate.

[0011] The through hole is a diamond-shaped through hole.

[0012] The web plate is a LYP225 steel web plate, and the wing plate of the I-beam is a Q345 steel wing plate.

[0013] The cutting plate is a copper plate.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (1) The eddy current damping effect is significant: through the coordination of the meshing parts and the gears, when the two connecting beam end plates are displaced, the displacement is converted into the rotation of the gears. The speed of cutting the magnetic flux lines is amplified by the cutting plate, which greatly improves the energy dissipation effect of the eddy current damping energy dissipation components and solves the problem that it is difficult to make a damper with a large damping coefficient using eddy current damping.

[0016] (2) Energy dissipation in all stages: The eddy current damping energy dissipation component is a "velocity" related type, and the yield energy dissipation component is a "displacement" related type. Under wind vibration or small earthquakes, the shear displacement of the end plate of the connecting beam is small, and the yield energy dissipation component does not yield and only provides lateral stiffness, while the eddy current damping energy dissipation component can dissipate the energy input by the structure; under medium or large earthquakes, the shear displacement of the end plate of the connecting beam is large, and the yield energy dissipation component yields. The eddy current damping energy dissipation component and the yield energy dissipation component combine to dissipate energy, realizing full-stage energy dissipation under wind vibration, small earthquakes, medium earthquakes and large earthquakes.

[0017] (3) The eddy current damping energy dissipation component includes a multi-layer cutting plate and a multi-layer magnetic pole body, which can effectively enhance the energy dissipation effect of the eddy current damping energy dissipation component.

[0018] (4) The inner ring permanent magnet and the outer ring permanent magnet have the same magnetic pole direction in the radial direction, change alternately in the circumferential direction, and are consistent in the axial direction. This method significantly improves the energy dissipation effect of the eddy current damping energy dissipation component.

[0019] (5) It is easy to design energy-dissipating coupling beams with different energy dissipating effects: Parameters such as the size of the permanent magnet, the size of the cutting plate, the size of the shaft, the air gap between the permanent magnet and the cutting plate, the number of layers of the cutting plate and the magnetic pole body, and the size of the diamond through hole are easy to adjust and have a great influence on the energy dissipating effect. It is easy to design energy-dissipating coupling beams with different energy dissipating effects.

[0020] (6) Easy to replace quickly after an earthquake: When the eddy current damping energy dissipation component generates damping force, there is no contact between the primary and secondary, and the loss is small. Generally, it does not need to be replaced after an earthquake. Therefore, only the yield energy dissipation component needs to be replaced. The web is detachably connected to the end plate of the connecting beam through the end plate, which is easy to replace quickly after an earthquake, thereby realizing the recoverability of the structural function.

[0021] (7) The through holes are diamond-shaped and have moderate tensile and compressive strains, so that the yielding energy dissipation component provides lateral stiffness during wind vibration or small earthquakes and yields during medium and large earthquakes.

[0022] (8) LYP225 steel has low yield strength and good ductility, can enter the yield state earlier, and has better energy dissipation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the rack and gear structure of the present invention;

[0026] Figure 4 The figure is a layout diagram of the inner ring permanent magnet and the outer ring permanent magnet on the upper surface of the fixed plate of the present invention;

[0027] Figure 5 The figure is a layout diagram of the inner ring permanent magnet and the outer ring permanent magnet on the lower surface of the fixed plate of the present invention;

[0028] Reference numerals:

[0029] 11 is a rack; 12 is a shaft; 13 is a first copper plate; 14 is a second copper plate; 15 is a third copper plate; 16 is a fourth copper plate; 17 is a bearing; 18 is a first fixed plate; 19 is a second fixed plate; 110 is a third fixed plate; 111 is a fourth fixed plate; 112 is an inner ring permanent magnet; 113 is an outer ring permanent magnet; 21 is a web plate; 22 is a wing plate; 23 is a through hole; 24 is an end plate; 31 is a connecting beam end plate; 41 is a high-strength bolt; 42 is a self-tapping screw. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0031] Example

[0032] The present embodiment provides an energy-absorbing type connecting beam, comprising a yield energy-absorbing component and an eddy current damping energy-absorbing component connected to the connecting beam end plate 31, wherein the yield energy-absorbing component comprises a first yielding member and a second yielding member, wherein the eddy current damping energy-absorbing component is located between the first yielding member and the second yielding member, wherein the eddy current damping energy-absorbing component comprises a rack 11, a gear, a cutting plate and a magnetic pole body, wherein the gear, the cutting plate and the magnetic pole body are coaxially arranged, the magnetic pole body is connected to one connecting beam end plate 31, and the rack 11 meshing with the gear is connected to another connecting beam end plate 31, and when the two connecting beam end plates 31 are displaced, the yield energy-absorbing component consumes energy, the rack 11 drives the gear to rotate, and the gear drives the cutting plate to cut the magnetic flux lines, thereby realizing the energy consumption of the eddy current damping energy-absorbing component.

[0033] Specifically:

[0034] like Figure 1 and Figure 2 As shown, the first yielding member and the second yielding member are I-shaped steels with diamond-shaped through holes of a certain size on the web 21, the two ends of the wing plate 22 and the web 21 are detachably connected to the two connecting beam end plates 31 through two end plates 24, the two ends of the wing plate 22 and the web 21 are welded to the two end plates 24, the web 21 is LYP225 low-yield steel, and the wing plate 22 is Q345 steel.

[0035] like Figure 1-Figure 3 As shown, the eddy current damping energy dissipation component includes a multi-layer cutting plate and a multi-layer magnetic pole body, which are coaxially arranged at intervals. When the two connecting beam end plates 31 are displaced, the gear drives the multi-layer cutting plate to cut the magnetic flux lines. The magnetic pole body includes a coaxial inner ring permanent magnet 112 and an outer ring permanent magnet 113 within the coverage range of the cutting plate. Figure 4 and Figure 5 As shown, the inner ring permanent magnet 112 and the outer ring permanent magnet 113 are fixed to a fixed plate, the inner ring permanent magnet 112 and the outer ring permanent magnet 113 are arranged on both sides of the fixed plate, the fixed plate is connected to a connecting beam end plate 31, the inner ring permanent magnet 112 and the outer ring permanent magnet 113 have consistent radial magnetic pole directions, change alternately along the circumferential magnetic pole directions, and are consistent along the axial magnetic pole directions.

[0036] The cutting plate of this embodiment is a copper plate and has four layers, namely the first copper plate 13, the second copper plate 14, the third copper plate 15 and the fourth copper plate 16. The fixed plate has four layers, namely the first fixed plate 18, the second fixed plate 19, the third fixed plate 110 and the fourth fixed plate 111. The gear, the first copper plate 13, the second copper plate 14, the third copper plate 15, the fourth copper plate 16, the first fixed plate 18, the second fixed plate 19, the third fixed plate 110 and the fourth fixed plate 111 are connected through the shaft 12, the first fixed plate 18, the second fixed plate 19, the third fixed plate 110 and the fourth fixed plate 111 are connected to the shaft 12 through the bearing 17, and the bearing 17, the first copper plate 13, the second copper plate 14, the third copper plate 15 and the fourth copper plate 16 are key-connected to the shaft 12. The inner ring permanent magnet 112 and the outer ring permanent magnet 113 are located within the diameter range of the first copper plate 13, the second copper plate 14, the third copper plate 15 and the fourth copper plate 16. The material of the inner ring permanent magnet 112 and the outer ring permanent magnet 113 is N50M neodymium iron boron, and the material of the first fixed plate 18, the second fixed plate 19, the third fixed plate 110 and the fourth fixed plate 111 is steel with good magnetic conductivity.

[0037] The energy-absorbing coupling beam of this embodiment is further described in a symmetrical construction sequence from inside to outside:

[0038] Circular holes are opened on the first fixing plate 18, the second fixing plate 19, the third fixing plate 110 and the fourth fixing plate 111 to place the bearings 17 and then welded to fix the gears to the shaft 12, and the inner ring permanent magnets 112 and the outer ring permanent magnets 113 are fixed to the first fixing plate 18, the second fixing plate 19, the third fixing plate 110 and the fourth fixing plate 111 by self-tapping screws 42.

[0039] One end of the first fixing plate 18 is welded to a connecting beam end plate 31 , the first copper plate 13 and the second copper plate 14 are fixed on the shaft body 12 , and the shaft body 12 and the bearing 17 of the first fixing plate 18 are fixed.

[0040] The second fixing plate 19 is fixed to the shaft body 12 in the same manner, and one end of the second fixing plate 19 is welded to a connecting beam end plate 31 .

[0041] The third copper plate 15 is fixed on the shaft body 12 , the bearing 17 of the third fixing plate 110 is fixed to the shaft body 12 , and one end of the third fixing plate 110 is welded to a connecting beam end plate 31 .

[0042] The fourth copper plate 16 is fixed on the shaft body 12 , the bearing 17 of the fourth fixing plate 111 is fixed to the shaft body 12 , and one end of the fourth fixing plate 111 is welded to a connecting beam end plate 31 .

[0043] An end plate 24 is fixed to a connecting beam end plate 31 by high-strength bolts 41 .

[0044] The rack 11 is welded to another connecting beam end plate 24, and then the teeth of the rack 11 are meshed with the teeth of the gear. Finally, the other end plate 24 is fixed to another connecting beam end plate 31 by high-strength bolts 41. At this point, the assembly of the replaceable connecting beam section is completed.

[0045] Advantages of the energy-dissipating coupling beam of this embodiment:

[0046] The eddy current damping effect is significant: through the cooperation of the rack and the gear, when the two connecting beam end plates are displaced, the displacement is converted into the rotation of the gear, and the speed of cutting the magnetic flux lines is amplified by the cutting plate, which greatly improves the energy dissipation effect of the eddy current damping energy-consuming components and solves the problem that it is difficult to make a damper with a large damping coefficient using eddy current damping.

[0047] Energy dissipation in all stages: The eddy current damping energy dissipation component is "velocity" related, and the yield energy dissipation component is "displacement" related. Under wind vibration or small earthquakes, the shear displacement of the end plate of the connecting beam is small, and the yield energy dissipation component does not yield and only provides lateral stiffness, while the eddy current damping energy dissipation component can dissipate the energy input by the structure; under medium or large earthquakes, the shear displacement of the end plate of the connecting beam is large, and the yield energy dissipation component yields. The eddy current damping energy dissipation component and the yield energy dissipation component combine to dissipate energy, realizing full-stage energy dissipation under wind vibration, small earthquakes, medium earthquakes and large earthquakes.

[0048] It is easy to design energy-dissipating coupling beams with different energy-dissipating effects: the size of the permanent magnet, the size of the cutting plate, the size of the shaft, the air gap between the permanent magnet and the cutting plate, the number of layers of the cutting plate and the magnetic pole body, the size of the diamond through hole and other parameters are easy to adjust, which have a great influence on the energy-dissipating effect, and it is easy to design energy-dissipating coupling beams with different energy-dissipating effects.

[0049] Easy to replace quickly after an earthquake: In the process of generating damping force, the primary and secondary of the eddy current damping energy dissipation component have no contact, and the loss is small. Generally, it does not need to be replaced after an earthquake. Therefore, only the yield energy dissipation component needs to be replaced. The web is detachably connected to the connecting beam end plate through the end plate, which is easy to replace quickly after an earthquake, thereby realizing the recoverability of the structural function.

Claims

1. An energy dissipation type coupling beam, comprising a yielding energy dissipation component and an eddy current damping energy dissipation component connected to a coupling beam end plate (31), wherein the yielding energy dissipation component comprises a first yielding member and a second yielding member, and the eddy current damping energy dissipation component is located between the first yielding member and the second yielding member, characterized in that: The eddy current damping energy dissipation component comprises a gear, a meshing piece meshing with the gear, a cutting plate and a magnetic pole body, the gear, the cutting plate and the magnetic pole body are coaxially arranged, the magnetic pole body is connected to one connecting beam end plate (31), the meshing piece is connected to another connecting beam end plate (31), when the two connecting beam end plates (31) are displaced, the yielding energy dissipation component dissipates energy, the meshing piece drives the gear to rotate, and the gear drives the cutting plate to cut the magnetic flux lines, thereby realizing energy dissipation of the eddy current damping energy dissipation component; The eddy current damping energy dissipation component comprises a multi-layer cutting plate and a multi-layer magnetic pole body, wherein the multi-layer cutting plate and the multi-layer magnetic pole body are coaxially arranged at intervals, and when the two connecting beam end plates (31) are displaced, the gear drives the multi-layer cutting plate to cut the magnetic flux lines; The first yielding member and the second yielding member are I-shaped steels with a web (21) provided with a through hole (23), and the web (21) is detachably connected to the connecting beam end plate (31) via an end plate (24).

2. The energy dissipation coupling beam according to claim 1, characterized in that: The magnetic pole body comprises a coaxial inner ring permanent magnet (112) and an outer ring permanent magnet (113) within the coverage range of the cutting plate, the inner ring permanent magnet (112) and the outer ring permanent magnet (113) are fixed to a fixed plate, the fixed plate is connected to a connecting beam end plate (31), the inner ring permanent magnet (112) and the outer ring permanent magnet (113) have the same magnetic pole direction in the radial direction, the magnetic pole direction in the circumferential direction changes alternately, and the magnetic pole direction in the axial direction is the same.

3. The energy dissipation coupling beam according to claim 2, characterized in that: The gear, the cutting plate and the fixing plate are connected via a shaft (12); the fixing plate is connected to the shaft (12) via a bearing (17); and the cutting plate and the bearing (17) are key-connected to the shaft (12).

4. The energy dissipation coupling beam according to claim 1, characterized in that: The through hole (23) is a diamond-shaped through hole.

5. The energy dissipation coupling beam according to claim 1, characterized in that: The web plate (21) is a LYP225 steel web plate, and the flange plate (22) of the I-beam is a Q345 steel flange plate.

6. The energy dissipation coupling beam according to claim 1, characterized in that: The cutting plate is a copper plate.

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