Building shock isolation device and method based on electricity-to-magnetism principle

Abstract

The invention discloses a building shock insulation device and method based on an electricity-to-magnetism principle, and belongs to the technical field of building shock absorption. According to the building shock isolation device based on the electricity-to-magnetism principle, a high-rise building is divided into at least two sections in the horizontal direction, the two sections comprise the building section A located at the bottom and the building section B located on the upper portion, a magnetic attraction layer is arranged between the building section A and the building section B, and the magnetic attraction layer generates magnetic attraction; when an earthquake occurs, the B-section building properly moves through magnetic attraction, so that earthquake energy is absorbed and dissipated. The problem that in the prior art, the building resonance is reduced due to the contradiction between the reduction of the self weight of the building and the increase of heavier lateral-resistant components is solved. The building is constructed in a segmented mode, the magnetic attraction layers are arranged at the connecting positions, and the contradiction between the situation that the self weight of the building needs to be reduced to relieve the earthquake acting force and the situation that heavy lateral-resisting components need to be added to increase the structural rigidity to resist the horizontal earthquake action is solved to a certain degree.

Description

Technical Field

[0001] The invention relates to the technical field of building shock absorption, and in particular to a building shock isolation device and method based on the electromagnetism principle. Background Art

[0002] During an earthquake, buildings are mainly damaged by the shear waves of the earthquake. However, in the existing structural design, most of them use the principle of structural resistance to earthquake force to offset the earthquake force. On the one hand, such structural design requires the structure itself to have greater rigidity (the most common way to increase rigidity is to increase the lateral resistance components, most of which are shear walls and cylinder structures, which have a large self-weight); on the other hand, it is necessary to reduce the self-weight of the building to achieve the purpose of reducing the earthquake force. This is a common contradiction in structural design. At the same time, during an earthquake, buildings are often resonated with the earthquake force, which increases the destructive force of the building. Summary of the invention

[0003] The purpose of the present invention is to provide a building seismic isolation device and method based on the principle of electromagnetism. By constructing the building in sections and setting a magnetic attraction layer at the connection, it can solve the contradiction between the need to reduce the building's own weight to reduce the seismic force and the need to increase heavier anti-side components to increase the structural stiffness to resist horizontal seismic effects to a certain extent. At the same time, it can solve the problem of earthquake damage to the building caused by building resonance and the "whip effect" of the building, and solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A building seismic isolation device based on the principle of electromagnetism, comprising a section A building at the bottom and a section B building at the top, a magnetic attraction layer is arranged between the section A building and the section B building, the magnetic attraction layer comprises a first magnetic layer and a second magnetic layer, the first magnetic layer is arranged at the top of the section A building, the second magnetic layer is arranged at the bottom of the section B building, and electromagnetism devices are arranged in the first magnetic layer and the second magnetic layer;

[0006] At least four sliding supports are arranged at the bottom of the building of Section B, and connecting grooves matching with the sliding supports are arranged at the top of the building of Section A. The sliding supports are correspondingly inserted into the connecting grooves, and at least 8 dampers are arranged horizontally in each connecting groove. The dampers are arranged around the sliding supports, and one end of the damper is installed on the side wall of the connecting groove, and the other end is installed on the side wall of the sliding support;

[0007] A steel structure connection layer is arranged on the upper part of the building in Section B, and a steel structure support is obliquely erected between the outer edge of the steel structure connection layer and the ground.

[0008] Preferably, the electromagnetism device includes an AC power supply, a bridge rectifier, a capacitor, a winding coil a and a winding coil b, and the winding coil a and the winding coil b are respectively arranged inside the first magnetic layer and the second magnetic layer, and the AC power supply, the bridge rectifier, the capacitor, the winding coil a and the winding coil b form a current loop.

[0009] Preferably, the electromagnetism device cooperates with a control unit.

[0010] Preferably, the building in section A adopts a shear wall structure or a cylinder structure, and the building in section B adopts a steel structure.

[0011] Preferably, a transfer layer is provided at the bottom of the building in section B.

[0012] A building seismic isolation method based on the electromagnetism principle is implemented based on a building seismic isolation device based on the electromagnetism principle, and comprises the following steps:

[0013] Step 1: When the earthquake early warning system detects an imminent earthquake activity, the control unit is activated;

[0014] Step 2: Ensure a stable supply of AC power and gradually activate the bridge rectifier to convert AC power into DC power;

[0015] Step 3: monitor and manage the charging process of the capacitor, and accurately adjust the current supplied to the winding coil a and the winding coil b, so that magnetic attraction is generated between the first magnetic layer and the second magnetic layer, so that when an earthquake occurs, the building in section B moves appropriately through the magnetic attraction, thereby absorbing and dissipating the earthquake energy, and when the building in section B moves, the energy generated by the displacement is consumed through the damper;

[0016] Step 4: Dynamically adjust the magnetic field strength according to the relative displacement between the buildings in section A and the buildings in section B;

[0017] Step 5. When seismic activity subsides, gradually reduce the magnetic field strength until it is shut down and perform a final safety power-off check.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention divides a high-rise building into two sections in the horizontal direction, and uses a lighter steel structure as the main structure of the building in section B. The upper and lower parts are connected by the magnetic attraction generated by the electromagnetism device, so that the building in section A can adopt a simple shear wall or cylinder structure, while the building in section B uses the steel structure to reduce its own weight, thereby reducing the overall self-weight of the building, thereby reducing the impact of the seismic force. The center of gravity of the building in section A is lowered, reducing the seismic force it is subjected to. There is electromagnetic attraction from the building in section A below the building in section B, which can offset part of the seismic force and achieve the purpose of shock reduction.

[0020] 2. The present invention sets an electromagnetism device between building section A and building section B, and activates the device before an earthquake occurs, so that the two building sections generate a certain magnetic attraction. This design can simulate the effect of a damper during an earthquake, avoiding resonance between the building and the seismic wave, and also has a positive effect on alleviating the "whip effect", that is, the upper structure will not be damaged more severely due to excessive shaking.

[0021] 3. The present invention generates magnetic attraction between the first magnetic layer 31 and the second magnetic layer 32, so that when an earthquake occurs, the building in section B can move appropriately through the magnetic attraction, thereby absorbing and dissipating the earthquake energy. When the building in section B moves, the energy generated by the displacement is consumed by the damper. The coordinated use of the sliding support and the damper can effectively reduce the resonance effect of the building during an earthquake, thereby further enhancing the earthquake resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an axonometric diagram of the overall structure of the present invention;

[0023] Figure 2 It is an axonometric diagram of the magnetic gravitational layer of the present invention;

[0024] Figure 3 A top view of the connection relationship between the damper and the sliding support of the present invention;

[0025] Figure 4 It is a longitudinal cross-sectional view of the damper and the sliding support of the present invention;

[0026] Figure 5 It is a schematic diagram of the electromagnetism device of the present invention.

[0027] In the figure: 1. Building in section A; 2. Building in section B; 3. Magnetic attraction layer; 31. First magnetic layer; 32. Second magnetic layer; 4. Sliding support; 5. Connection groove; 6. Damper; 7. Steel structure connection layer; 8. Steel structure support; 9. AC power supply; 10. Bridge rectifier; 11. Capacitor; 12. Winding coil a; 13. Winding coil b. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to solve the contradiction between reducing the building's own weight to reduce the seismic force and adding heavier lateral components to increase the structural rigidity and reduce the resonance of the building, please refer to Figure 1-5 , this embodiment provides the following technical solutions:

[0030] In order to effectively isolate the energy transfer of seismic waves, a high-rise building is divided into at least two sections in the horizontal direction, including section A building 1 at the bottom and section B building 2 at the top, and a magnetic gravitational layer 3 is set between section A building 1 and section B building 2. The purpose of this design is to ensure that when an earthquake occurs, the bottom section A building 1 can be relatively stably fixed on the foundation, while the top section B building 2 can move appropriately through the magnetic gravitational layer 3, thereby absorbing and dissipating seismic energy.

[0031] Since the A-section building 1 and the B-section building 2 are separated, the earthquake force of the entire building can be calculated as two structural units, thereby reducing its deadweight and the earthquake force it is subjected to. For the A-section building 1, this design lowers its center of gravity, thereby reducing the earthquake force it is subjected to, and because of the electromagnetic attraction at the upper end of the A-section building 1, it can reduce the "whip effect" produced by the horizontal force of the earthquake, thereby reducing the damage caused by the earthquake. For the B-section building 2, when it suffers a major earthquake, the B-section building 2 will be destroyed first, and the collapse of the B-section building 2 will not cause a significant impact on the A-section building 1. The collapse direction of the B-section building 2 can also be artificially controlled on the steel structure support 8 to minimize the impact on surrounding buildings.

[0032] The magnetic attraction layer 3 includes a first magnetic layer 31 and a second magnetic layer 32. The first magnetic layer 31 is arranged on the top of the building 1 in section A, and the second magnetic layer 32 is arranged on the bottom of the building 2 in section B. A magnetic attraction is generated between the first magnetic layer 31 and the second magnetic layer 32, so that the building 2 in section B can move appropriately through the magnetic attraction when an earthquake occurs, thereby absorbing and dissipating earthquake energy.

[0033] At least four sliding supports 4 are arranged at the bottom of the building 2 in section B, and connecting grooves 5 matched with the sliding supports 4 are arranged on the top of the building 1 in section A. The sliding supports 4 are correspondingly inserted into the connecting grooves 5. At least 8 dampers 6 are horizontally arranged in each connecting groove 5. The dampers 6 are arranged around the sliding supports 4, so that one end of the damper 6 is installed on the side wall of the connecting groove 5, and the other end is installed on the side wall of the sliding support 4. When the building 2 in section B moves, the energy generated by the displacement is consumed by the damper 6. Through the coordinated use of the sliding supports 4 and the dampers 6, the resonance effect of the building during an earthquake can be effectively reduced, the earthquake resistance performance is further enhanced, and the building can return to its original position after the earthquake.

[0034] A steel structure connection layer 7 is arranged on the upper part of the section B building 2, and a steel structure support 8 is obliquely erected between the outer edge of the steel structure connection layer 7 and the ground, so that the main force of the section B building 2 is transmitted to the ground through the steel structure support 8, and the surrounding steel structure supports 8 have no connection with the section A building 1.

[0035] An electromagnetism device for generating magnetic attraction is provided in the first magnetic layer 31 and the second magnetic layer 32, and the electromagnetism device includes:

[0036] AC power source 9, used to provide a power source;

[0037] A bridge rectifier 10 is used to convert alternating current into direct current with a constant current direction;

[0038] Capacitor 11, used for adjusting the direct current to a more straight and stable direct current;

[0039] The winding coil a12 and the winding coil b13 are respectively arranged inside the first magnetic layer 31 and the second magnetic layer 32. After direct current is passed through the winding coil a12 and the winding coil b13, an "N / S" magnetic field with a constant magnetic field direction is generated, so that an opposite magnetic field is generated between the first magnetic layer 31 and the second magnetic layer 32, thereby generating magnetic attraction between the section A building 1 and the section B building 2.

[0040] The specific arrangement and shape of the winding coil a12 and the winding coil b13 need to be determined according to the site. Later, according to the magnitude of the earthquake, a sliding rheostat can be designed to change the number of coils and change the strength of the magnetic field.

[0041] The electromagnetism device cooperates with the control unit, which is used to receive earthquake warning signals and control the start and stop of the electromagnetism device and the magnetic field strength, specifically:

[0042] After receiving the earthquake longitudinal wave warning signal, the control unit first ensures the stable supply of AC power supply 9 and adjusts the voltage and frequency, then gradually activates the bridge rectifier 10 to convert AC power into DC power, and monitors and manages the charging process of capacitor 11, and then accurately adjusts the current supplied to winding coil a12 and winding coil b13 to enhance the magnetic field strength, and uses the time difference to complete the startup before the arrival of the earthquake transverse wave, and dynamically adjusts the magnetic field according to the relative displacement between section A building 1 and section B building 2. When the seismic activity weakens, the control unit gradually reduces the magnetic field strength until it is shut down, and performs a final safety power-off check.

[0043] Building 1 in section A adopts a shear wall structure or a cylindrical structure, and its self-weight force acts completely on the foundation. Building 2 in section B adopts a lighter steel structure, and its self-weight force acts directly on the steel structure support 8 through the steel structure connection layer 7. The use of the above materials can save costs on the one hand, and reduce weight on the other hand, which is beneficial to earthquake resistance. Since the construction materials of buildings 1 in section A and buildings 2 in section B are different, a conversion layer needs to be set at the bottom of building 2 in section B to better adapt to possible deformation.

[0044] Working principle: When the earthquake early warning system detects an impending earthquake activity, the control unit receives the earthquake longitudinal wave warning signal and quickly starts a series of response mechanisms. First, ensure that the AC power supply 9 is stably supplied, then convert the AC power into DC power through the bridge rectifier 10, and then adjust it to a straight and stable DC power through the capacitor 11. This current is accurately transmitted to the winding coil a12 and the winding coil b13 in the first magnetic layer 31 set at the top of the A section building 1 and the second magnetic layer 32 at the bottom of the B section building 2, thereby generating an "N / S" magnetic field with a constant direction, so that the two sections of the building generate a magnetic attraction of opposite sexes attracting each other.

[0045] At the same time, at least four sliding supports 4 arranged at the bottom of the B section building 2 allow it to move horizontally relative to the A section, and at least eight dampers 6 arranged around the sliding supports 4 and located in each connection groove 5 are used to consume the energy generated by the displacement, thereby reducing vibration. The steel structure connection layer 7 and the steel structure support 8 obliquely erected between the outer edge of the steel structure connection layer 7 and the ground further ensure that the main force of the B section building 2 can be directly transmitted to the ground, avoiding additional stress concentration.

[0046] Before the arrival of the seismic shear wave, the control system uses the time difference to complete the above startup process and dynamically adjusts the magnetic field strength according to the relative displacement between Building 1 in Section A and Building 2 in Section B. As the seismic activity weakens, the control unit gradually reduces the magnetic field strength until it shuts down and performs a safety power-off check.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A building seismic isolation device based on the electromagnetism principle, comprising a building section A (1) at the bottom and a building section B (2) at the top, characterized in that: A magnetic attraction layer (3) is arranged between the section A building (1) and the section B building (2), the magnetic attraction layer (3) comprising a first magnetic layer (31) and a second magnetic layer (32), the first magnetic layer (31) being arranged at the top of the section A building (1), the second magnetic layer (32) being arranged at the bottom of the section B building (2), and electromagnetism devices being arranged in the first magnetic layer (31) and the second magnetic layer (32); At least four sliding supports (4) are arranged at the bottom of the B section building (2), and a connecting groove (5) matching with the sliding support (4) is arranged at the top of the A section building (1), and the sliding support (4) is correspondingly inserted into the connecting groove (5), and at least 8 dampers (6) are arranged horizontally in each connecting groove (5), and the dampers (6) are arranged around the sliding support (4), and one end of the damper (6) is installed on the side wall of the connecting groove (5), and the other end is installed on the side wall of the sliding support (4); A steel structure connection layer (7) is arranged on the upper part of the building (2) of section B, and a steel structure support (8) is obliquely erected between the outer edge of the steel structure connection layer (7) and the ground.

2. The building seismic isolation device based on the electromagnetism principle according to claim 1 is characterized in that: The electromagnetism device comprises an alternating current power source (9), a bridge rectifier (10), a capacitor (11), a winding coil a (12) and a winding coil b (13); the winding coil a (12) and the winding coil b (13) are respectively arranged inside a first magnetic layer (31) and a second magnetic layer (32); the alternating current power source (9), the bridge rectifier (10), the capacitor (11), the winding coil a (12) and the winding coil b (13) form a current loop.

3. The building seismic isolation device based on the electromagnetism principle according to claim 2 is characterized in that: The electromagnetism device cooperates with the control unit.

4. The building seismic isolation device based on the electromagnetism principle according to claim 3 is characterized in that: The section A building (1) adopts a shear wall structure or a cylindrical structure, and the section B building (2) adopts a steel structure.

5. The building seismic isolation device based on the electromagnetism principle according to claim 4 is characterized in that: A transfer layer is arranged at the bottom of the B-section building (2).

6. A building seismic isolation method based on the electromagnetism principle, which is implemented based on the building seismic isolation device based on the electromagnetism principle according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: When the earthquake early warning system detects an imminent earthquake activity, the control unit is activated; Step 2: Ensure the stable supply of AC power (9) and gradually activate the bridge rectifier (10) to convert AC power into DC power; Step 3: monitor and manage the charging process of the capacitor (11), and accurately adjust the current supplied to the winding coil a (12) and the winding coil b (13), so that magnetic attraction is generated between the first magnetic layer (31) and the second magnetic layer (32), so that when an earthquake occurs, the section B building (2) moves appropriately through the magnetic attraction, thereby absorbing and dissipating the earthquake energy, and when the section B building (2) moves, the energy generated by the displacement is consumed through the damper (6); Step 4: dynamically adjusting the magnetic field strength according to the relative displacement between the building in section A (1) and the building in section B (2); Step 5. When seismic activity subsides, gradually reduce the magnetic field strength until it is shut down and perform a final safety power-off check.

Images