Anti-seismic energy dissipation column using piezoelectric material and construction method thereof

Abstract

The application discloses an anti-seismic energy dissipation column using piezoelectric materials, which comprises an aluminum column, a piezoelectric anti-seismic structure is sleeved in the aluminum column, the piezoelectric anti-seismic structure comprises a power supply and a plurality of first piezoelectric rings, second piezoelectric rings are arranged between adjacent first piezoelectric rings, the positive and negative poles of the power supply are respectively connected with wires, the other ends of the wires are respectively connected with the upper and lower ends of the piezoelectric anti-seismic structure, thin-walled steel pipes are tightly connected with the upper and lower sides of the aluminum column respectively, and the thin-walled steel pipes are filled with micro-expansion cement paste, the aluminum column and the piezoelectric anti-seismic structure are arranged, the elastic property of the aluminum column and the inverse piezoelectric effect of the piezoelectric materials are utilized, the structural damping is effectively increased, the anti-seismic performance of the structure is strengthened, the aluminum column is elastically deformed under small earthquakes, the active control of the structure is realized under large earthquakes through the inverse piezoelectric effect of the piezoelectric materials, and thus the building can be repaired under medium earthquakes and will not collapse under large earthquakes.

Description

Technical Field

[0001] This invention relates to the field of seismic resistance technology in buildings, specifically to a seismic energy-dissipating column using piezoelectric materials and its construction method. Background Technology

[0002] During an earthquake, the seismic force causes building structures to vibrate. Traditional building structures often cannot withstand the enormous forces during an earthquake, leading to building collapse and casualties. Piezoelectric materials are a class of materials with special electrical properties, capable of generating strain or charge under the influence of an applied electric field. Piezoelectric materials mainly include piezoelectric crystals, piezoelectric ceramics, and piezoelectric polymers. When a voltage is applied to the two surfaces of a piezoelectric material, the polarization direction of all grains tends to align with the direction of the electric field, causing a relative displacement of the positive and negative charge centers inside the piezoelectric element, resulting in deformation of the piezoelectric material. This phenomenon is called the inverse piezoelectric effect. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides a seismic-resistant energy-dissipating column using piezoelectric materials. It consists of an aluminum column and a piezoelectric seismic-resistant structure. By utilizing the inverse piezoelectric effect of the piezoelectric material and the elasticity of the aluminum column, the structural damping is effectively increased, enhancing the seismic performance of the structure. The elasticity of the aluminum column ensures that the structure is not damaged in minor earthquakes, while the inverse piezoelectric effect of the piezoelectric material enables active control of the structure's seismic resistance. This allows the building to be repairable in moderate earthquakes and to remain standing in major earthquakes.

[0004] The technical solution of the present invention is as follows:

[0005] An anti-vibration energy dissipation column using piezoelectric materials includes an aluminum column with a piezoelectric anti-vibration structure inside. The piezoelectric anti-vibration structure includes a power source and several first piezoelectric rings. Second piezoelectric rings are interspersed between adjacent first piezoelectric rings. The positive and negative terminals of the power source are respectively connected to wires, and the other ends of the wires are respectively connected to the upper and lower ends of the piezoelectric anti-vibration structure. Thin-walled steel pipes are tightly connected to the upper and lower sides of the aluminum column, and micro-expansion cement grout is injected into the thin-walled steel pipes.

[0006] Furthermore, the thin-walled steel pipe has several grouting holes on its sidewall.

[0007] Furthermore, the thin-walled steel pipes on both the upper and lower sides are fixedly connected to the building structure by bolts.

[0008] Furthermore, the first piezoelectric ring and the second piezoelectric ring are made of different piezoelectric materials.

[0009] Furthermore, the distance between the thin-walled steel pipes on the upper and lower sides is one-third to one-fifth of the building's net clearance.

[0010] Furthermore, the micro-expansion cement slurry can be replaced with a mixture of cement-bentonite slurry or water glass.

[0011] A construction method for a seismic-resistant energy-dissipating column using piezoelectric materials mainly includes the following steps:

[0012] S1. Several bolts are pre-embedded on the upper and lower main beams using the implantation method, with the bolts on the upper and lower sides being symmetrical to each other;

[0013] S2. The thin-walled steel pipes are respectively connected to the corresponding upper main beam and lower main beam by bolts, and the thin-walled steel pipes on the upper and lower sides are symmetrically arranged.

[0014] S3. The first piezoelectric ring and the second piezoelectric ring are interlocked and spliced ​​together and then fitted into the aluminum column;

[0015] S4. The aluminum column is fixed between the thin-walled steel pipes on the upper and lower sides by bolts;

[0016] S5. Inject the micro-expansion cement slurry from the lower end of the thin-walled steel pipe to the upper end until it is completely full.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. This invention incorporates aluminum columns and a piezoelectric seismic-resistant structure. By utilizing the inverse piezoelectric effect of the piezoelectric material and the elasticity of the aluminum column, the structural damping is effectively increased, enhancing the seismic performance of the structure. The elasticity of the aluminum column ensures that the structure is not damaged in minor earthquakes, while the inverse piezoelectric effect of the piezoelectric material enables active control of the structure's seismic resistance, thereby achieving the goal of repairing buildings during moderate earthquakes and preventing collapse during major earthquakes.

[0019] 2. The present invention is provided with a first piezoelectric ring and a second piezoelectric ring made of different piezoelectric materials, and the first piezoelectric ring and the second piezoelectric ring are stacked alternately. By using the piezoelectric constants of different materials, the overall deformation of the piezoelectric material is uneven, resulting in greater deformation and better damping effect than traditional piezoelectric anti-vibration structures. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a front sectional view of the aluminum column portion in this invention.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Aluminum column; 2. Piezoelectric anti-seismic structure; 21. Power supply; 22. First piezoelectric ring; 23. Second piezoelectric ring; 24. Conductor; 3. Thin-walled steel pipe; 4. Grouting hole. Detailed Implementation

[0024] To make the content of this invention easier to understand, the technical solutions of this invention will be further described below in conjunction with specific embodiments and accompanying drawings, but this invention is not limited thereto.

[0025] Example 1

[0026] Please see Figure 1 and Figure 2 An anti-vibration energy dissipation column using piezoelectric materials includes an aluminum column 1. A piezoelectric anti-vibration structure 2 is installed inside the aluminum column 1. The piezoelectric anti-vibration structure 2 includes a power source 21 and several first piezoelectric rings 22. Second piezoelectric rings 23 are interspersed between adjacent first piezoelectric rings 22. The first piezoelectric rings 22 and the second piezoelectric rings 23 are fixed to the aluminum column 1 by bolts or by bonding on both sides. The positive and negative poles of the power source 21 are respectively connected to wires 24. The other end of the wires 24 is respectively connected to the upper and lower ends of the piezoelectric anti-vibration structure 2. The power source 21 is placed on the outside of the aluminum column 1 as a fixed power source. Thin-walled steel pipes 3 are tightly connected to the upper and lower sides of the aluminum column 1. The thin-walled steel pipes 3 are filled with micro-expansion cement slurry.

[0027] As a further preferred embodiment, the voltage of the power supply 21 is not less than 220V, and is used to supply power to the piezoelectric shock-resistant structure 2.

[0028] As a further preferred embodiment, the sidewall of the thin-walled steel pipe 3 is provided with a plurality of grouting holes 4.

[0029] As a further preferred embodiment, the thin-walled steel pipes 3 on both the upper and lower sides are fixedly connected to the building structure by bolts.

[0030] As a further preferred embodiment, the first piezoelectric ring 22 and the second piezoelectric ring 23 are made of different piezoelectric materials. By layering different piezoelectric materials and using the different piezoelectric constants of the materials, the overall deformation of the piezoelectric material is uneven, resulting in greater deformation and better damping effect than traditional piezoelectric anti-seismic structures.

[0031] As can be seen from the above description, by connecting the aluminum column 1, the first piezoelectric ring 22, and the second piezoelectric ring 23, the elastic deformation of the aluminum column and the negative voltage effect of the piezoelectric material increase the vertical deformation of the piezoelectric material to provide prestress, while increasing the friction between the piezoelectric materials. Through friction energy dissipation, the overall damping of the building is increased.

[0032] As a further preferred embodiment, the distance between the upper and lower thin-walled steel pipes 3 is one-third to one-fifth of the building's net clearance.

[0033] As a further preferred embodiment, the micro-expansion cement slurry can be replaced with a mixture of cement-bentonite slurry or water glass.

[0034] As described above, when an earthquake occurs, the seismic force will cause the building structure to vibrate. When the seismic force is transmitted to the seismic energy-dissipating column, the first piezoelectric ring 22 and the second piezoelectric ring 23 will adjust their own characteristics by providing an external electric field or strain through the power supply 21, generating corresponding reaction forces and energy conversion, converting seismic energy into electrical energy or mechanical energy, thereby achieving a better energy absorption effect, reducing the vibration amplitude of the structure and its response to seismic forces, extending the service life of the building, improving the overall stability and safety of the structure, and reducing the risk of casualties caused by earthquakes.

[0035] Example 2

[0036] A construction method for a seismic-resistant energy-dissipating column using piezoelectric materials mainly includes the following steps:

[0037] S1. Embed 3-4 bolts on the upper and lower main beams respectively using the implantation method, with the bolts on the upper and lower sides being symmetrical to each other;

[0038] S2 and thin-walled steel pipe 3 are connected to the corresponding upper and lower main beams by bolts, and the thin-walled steel pipes 3 on the upper and lower sides are symmetrically arranged. The distance between the near ends of the thin-walled steel pipes 3 on both sides is about one-quarter of the building's net height.

[0039] S3. The three first piezoelectric rings 22 and the three second piezoelectric rings 23 are sequentially interlocked and spliced ​​and fitted into the aluminum column 1, wherein the height of the aluminum column 1 is about one-quarter of the building's net height, and the height of the first piezoelectric rings 22 and the second piezoelectric rings 23 is about one-twenty-fourth of the building's net height.

[0040] S4. The aluminum column 1 is fixed between the thin-walled steel pipes 3 on the upper and lower sides by bolts, and the first piezoelectric ring 22 and the second piezoelectric ring 23 are connected to the power supply 21 by wire 24.

[0041] S5. Inject the micro-expansion cement grout into the thin-walled steel pipe 3 from the bottom opening until the inside of the thin-walled steel pipe 3 is completely filled.

[0042] In summary, the inverse piezoelectric effect of the piezoelectric seismic-resistant structure 2 and the elasticity of the aluminum column 1 effectively increase the structural damping and enhance the seismic performance of the structure. The elasticity of the aluminum column 1 ensures that the structure is not damaged in small earthquakes, while the inverse piezoelectric effect of the piezoelectric seismic-resistant structure 2 ensures that the structure is repairable in moderate earthquakes and will not collapse in large earthquakes.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A shock-resistant energy-dissipating column using piezoelectric materials, characterized in that: The structure includes an aluminum column (1), inside which is a piezoelectric anti-seismic structure (2). The piezoelectric anti-seismic structure (2) includes a power source (21) and several first piezoelectric rings (22). A second piezoelectric ring (23) is inserted between adjacent first piezoelectric rings (22). The first piezoelectric rings (22) and the second piezoelectric rings (23) are made of different piezoelectric materials. The positive and negative poles of the power source (21) are respectively connected to wires (24). The other end of the wires (24) is respectively connected to the upper and lower ends of the piezoelectric anti-seismic structure (2). Thin-walled steel pipes (3) are tightly connected to the upper and lower sides of the aluminum column (1). The thin-walled steel pipes (3) are filled with micro-expansion cement slurry. The distance between the thin-walled steel pipes (3) on the upper and lower sides is one-third to one-fifth of the building's net height.

2. The earthquake-resistant energy-dissipating column using piezoelectric materials according to claim 1, characterized in that: The thin-walled steel pipe (3) has several grouting holes (4) on its side wall.

3. The earthquake-resistant energy-dissipating column using piezoelectric materials according to claim 1, characterized in that: The thin-walled steel pipes (3) on both the upper and lower sides are fixedly connected to the building structure by bolts.

4. A seismic-resistant energy-dissipating column using piezoelectric materials according to claim 1, characterized in that: The micro-expansion cement slurry can be replaced with a mixture of cement-bentonite slurry or water glass.

5. A construction method for a seismic-resistant energy-dissipating column using piezoelectric materials as described in any one of claims 1-4, characterized in that: The main steps include: S1. Several bolts are pre-embedded on the upper and lower main beams using the implantation method, with the bolts on the upper and lower sides being symmetrical to each other; S2. The thin-walled steel pipe (3) is connected to the corresponding upper main beam and lower main beam by bolts, and the thin-walled steel pipe (3) on the upper and lower sides is symmetrically arranged. S3. The first piezoelectric ring (22) and the second piezoelectric ring (23) are interlocked and spliced ​​together and fitted into the aluminum column (1); S4. The aluminum column (1) is fixed between the thin-walled steel pipes (3) on the upper and lower sides by bolts; S5. Inject the micro-expansion cement slurry from the lower end of the thin-walled steel pipe (3) until the upper end is completely full.

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