CN113832852A - Periodic composite structure vibration reduction type bridge tower - Google Patents
Periodic composite structure vibration reduction type bridge tower Download PDFInfo
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- CN113832852A CN113832852A CN202111120303.3A CN202111120303A CN113832852A CN 113832852 A CN113832852 A CN 113832852A CN 202111120303 A CN202111120303 A CN 202111120303A CN 113832852 A CN113832852 A CN 113832852A
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- bridge tower
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- scatterer
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- 230000000737 periodic effect Effects 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000013016 damping Methods 0.000 claims abstract description 15
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 28
- 239000004567 concrete Substances 0.000 claims description 10
- 239000003733 fiber-reinforced composite Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 230000001788 irregular Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241001481833 Coryphaena hippurus Species 0.000 description 2
- 241001482616 Neophocaena phocaenoides Species 0.000 description 2
- 241001479123 Sousa chinensis Species 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000883303 Acipenser sinensis Species 0.000 description 1
- 241000283153 Cetacea Species 0.000 description 1
- 241000249820 Lipotes vexillifer Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a periodic composite structure vibration reduction type bridge tower, belonging to the field of vibration reduction and isolation structures. The periodic composite structure vibration damping type bridge tower comprises a bridge tower base body and a scattering body; a plurality of scatterers are arranged on the bridge tower base body; the scatterers are arranged on the bridge tower base body periodically; on the basis of the periodic arrangement mode, a certain region scatterer which is periodically arranged in the bridge tower base body is divided and adjusted to form a local non-periodicity, so that the requirements of vibration reduction and vibration isolation are met. The invention provides a periodic composite structure vibration reduction type bridge tower, which utilizes the self band gap characteristic and passband frequency characteristic on the basis of not adding other accessory facilities, realizes the vibration control of a special position and a special frequency band by changing the self structural characteristic, and furthest reserves the structural performance of the bridge tower. In addition, the whole structure is simple, the manufacture is convenient, the cost is low, and the construction is simple.
Description
Technical Field
The invention relates to a periodic composite structure vibration reduction type bridge tower, belonging to the field of vibration reduction and isolation structures.
Background
With the development of traffic transportation, the load and traffic flow of vehicles are gradually increased, and the underwater radiation noise caused by the vibration of the bridge structure is more and more obvious. The underwater noise generated by the vibration of the bridge structure can cause great harm to underwater organisms, particularly endangered species, such as Chinese white dolphin, Yangtze river dolphin, Chinese sturgeon and the like, when the Chinese white dolphin goes out, the Chinese dolphin becomes the last remaining whale dolphin animal in Yangtze river and is also the only confirmed freshwater subspecies of the Chinese dolphin at present. The bridge structure vibration noise not only directly interferes and affects the hearing and communication of the finless porpoise, but also can damage other organisms in river water to destroy the biodiversity of the water area, thereby deteriorating the living environment of the finless porpoise in the Yangtze river. The bridge tower of crossing the river bridge directly contacts with the water, and its vibration noise directly passes into aquatic, and then influences aquatic life, consequently need set up damping measure to the bridge tower urgently.
The periodic composite structure has band gap characteristics, and the elastic wave propagation in a band gap frequency range is effectively inhibited. Furthermore, the periodic structure has a certain passband frequency range in which elastic waves can propagate only in a certain direction. Therefore, after the periodic composite structure is applied to the bridge tower, the specific band gap of the bridge tower is formed by adjusting the position, the arrangement mode and the size of the scatterer, the transmission of waves in different frequency ranges is inhibited, or different defects are arranged on the structure, so that the specific passband frequency is formed, the elastic wave transmission in a specific frequency band in the structure has directionality, the directional transmission of vibration can be guided, and the vibration control of specific frequency and specific position is realized.
The band gap characteristic and the passband characteristic of the periodic composite structure are utilized to realize the vibration reduction effect, and the vibration reduction performance is realized under the condition of meeting the mechanical property of the bridge tower structure, which has important significance on the design of the bridge tower vibration reduction. In addition, the vibration of the bridge tower in the band gap frequency range is obviously reduced, and the sound radiation characteristic of the bridge tower structure is also obviously inhibited, so that the method has important significance for protecting the living and breeding environment of underwater organisms.
Disclosure of Invention
The invention provides a periodic composite structure vibration reduction type bridge tower aiming at the problems.
The invention adopts the following technical scheme:
the invention relates to a periodic composite structure vibration reduction type bridge tower, which comprises a bridge tower base body and a scatterer; a plurality of scatterers are arranged on the bridge tower base body; the scatterers are arranged on the bridge tower base body periodically; the periodic arrangement is circularly arranged according to a certain rule;
on the basis of the periodic arrangement mode, a certain region scatterer which is periodically arranged in the bridge tower base body is divided and adjusted to form a local non-periodicity so as to meet the requirements of vibration reduction and vibration isolation; the scatterer material in each section of the bridge tower base body is divided into a weakening area or a strengthening area according to the arrangement mode and the composition quantity.
According to the periodic composite structure vibration reduction type bridge tower, the cross section of the base body of the bridge tower is quadrilateral, pentagonal or irregular. The section of the bridge tower base body is an end face parallel to the horizontal ground.
The periodic composite structure vibration reduction type bridge tower provided by the invention has the advantages that the base material for forming the bridge tower comprises concrete, steel, a steel-concrete composite material or a fiber reinforced composite material.
According to the periodic composite structure vibration reduction type bridge tower, a cavity structure is arranged in a bridge tower base body; the scatterer is an external scatterer or an internal scatterer; the external scatterers are arranged along the inner side wall of the cavity structure of the bridge tower base body; the built-in scatterer extends outwards from the inner side of the cavity structure of the bridge tower base body and is embedded into the bridge tower base body.
According to the periodic composite structure vibration attenuation type bridge tower, the section of the external scatterer or the internal scatterer is rectangular or circular or triangular or geometric.
According to the periodic composite structure vibration attenuation type bridge tower, materials for forming the external scatterers comprise metal, concrete, ceramic, silicon rubber or fiber reinforced composite materials; and the external scatterers can be periodically arranged according to a binary structure form, a ternary structure form or a multi-element structure form.
The scatterer formed in the unitary structure form, the binary structure form, the ternary structure form or the multi-element structure form through-bridge tower matrix is in a unitary structure form when the scatterer is formed by one material; the scatterer is composed of two materials in a binary structure form, and the scatterer is composed of more than two materials in a multi-element structure form.
According to the periodic composite structure vibration attenuation type bridge tower, multiple materials for forming the external scatterers are periodically arranged on a base body of the bridge tower in the form of the superposed layers, the materials of the adjacent superposed layers are different, and the heights and the number of the superposed layers are determined according to different vibration attenuation and isolation requirements.
According to the periodic composite structure vibration attenuation type bridge tower, the materials of the built-in type scatterers comprise plastics, metals, ceramics, silicon rubber or fiber reinforced composite materials, and the built-in type scatterers can be periodically arranged according to a binary structure form, a ternary structure form or a multi-element structure form.
According to the periodic composite structure vibration attenuation type bridge tower, different materials of the built-in type scatterers are embedded into a bridge tower base body from the inner side of the bridge tower in a periodic mode, embedding modes comprise embedding, drilling and the like, and the scatterers are different from the base body material.
According to the periodic composite structure vibration attenuation type bridge tower, the external scatterers or the internal scatterers which are periodically arranged can form the self band gap of the bridge tower by adjusting the positions, arrangement modes and sizes of the scatterers, so that the transmission of waves in different frequency ranges is inhibited.
According to the vibration attenuation type bridge tower with the periodic composite structure, the external scatterers or the internal scatterers are provided with different defects on the basis of a periodic arrangement mode, so that specific passband frequency is formed, elastic wave propagation in a specific frequency band in the structure has directivity, vibration directional propagation can be guided, and vibration control of specific frequency and specific position is realized
Advantageous effects
The invention provides a periodic composite structure vibration reduction type bridge tower, which utilizes the self band gap characteristic and passband frequency characteristic on the basis of not adding other accessory facilities, realizes the vibration control of a special position and a special frequency band by changing the self structural characteristic, and furthest reserves the structural performance of the bridge tower. In addition, the whole structure is simple, the manufacture is convenient, the cost is low, and the construction is simple.
The invention provides a periodic composite structure vibration damping type bridge tower, which can be independently provided with a scatterer aiming at a special position and a special frequency band, wherein the special region in the scatterer refers to a region which has requirements and needs special vibration damping and vibration isolation, and the special frequency band in the scatterer refers to a vibration frequency range which has requirements and needs special reduction.
Drawings
FIG. 1 is a schematic overall view of a periodically-complex-structured vibration-damped bridge tower of the present invention;
FIG. 2 shows a periodically-combined-structure vibration-damping bridge tower according to the present invention
A three-dimensional schematic diagram of the model;
FIG. 3 shows a periodically-combined-structure vibration-damping bridge tower according to the present invention
Schematic top view;
FIG. 4 shows a periodically-combined-structure vibration-damping bridge tower according to the present invention
A three-dimensional schematic diagram of the model;
FIG. 5 shows a periodically-combined-structure vibration-damping bridge tower according to the present invention
Type I schematic plan view;
FIG. 6 shows a periodically-combined-structure vibration-damping bridge tower according to the present invention
A schematic view of the interior of the mold;
fig. 7 is a schematic view of a structure of a single-sided external scatterer according to the present invention.
Fig. 8 is a schematic view of the structure of the internal scatterer of the present invention.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1: the bridge tower is used as a base body, internal scatterers are periodically arranged to form an internal periodic composite structure vibration reduction type bridge tower, and external scatterers are periodically arranged to form an external periodic composite structure vibration reduction type bridge tower. The material for forming the built-in scatterer is different from the base material; the external scatterers can be arranged on two sides or one side of the bridge tower base body, and the materials of the adjacent superposed layers are different; the external or internal scatterers arranged periodically have a binary structure form, a ternary structure form or a multi-element structure form.
The periodically arranged external scatterers or internal scatterers can suppress the vibration of the frequency in the band gap of the bridge tower structure by adjusting the position, arrangement mode and size of the scatterers.
The external scatterer or the internal scatterer in the invention is designed with special defects on the basis of a periodic arrangement mode, guides vibration to directionally propagate, and forms a protective barrier for a special area of a bridge tower structure.
The invention will be further elucidated by way of example with reference to the accompanying drawings:
example 1:
as shown in FIGS. 2 to 3, the present embodiment is a periodic composite structure vibration damping type bridge tower
And (4) molding. The periodic composite structure vibration-damping type bridge tower is composed of a bridge tower base body 1 and an external scatterer 2. Push buttonIn the figure 2, m rows x n columns of external scatterers 2 are arranged on the inner side of a bridge tower base body 1 in a periodic arrangement mode of a rectangular array to form a periodic composite structure vibration attenuation type bridge tower
And (4) molding.
The cross section of the bridge tower base body is pentagonal, the lengths of the base body are respectively L1, L2, L3, L3 and L2, and the internal angles of the base body are respectively beta1，β2，β3，β4，β5 And the thickness is T, and the material for forming the bridge tower base body is concrete.
Example 2:
as shown in FIGS. 4 to 6, the present embodiment is a periodic composite structure vibration damping type bridge tower
And (4) molding. The periodic composite structure vibration-damping type bridge tower consists of a bridge tower base body 1 and a built-in type scatterer 2. Scatterers are embedded into the inner side of the matrix 1 in a periodic arrangement of a rectangular array as shown in fig. 4 to form a periodic composite structure vibration attenuation type bridge tower
And (4) molding.
The cross section of the bridge tower base body is pentagonal, the lengths of the base body are respectively L1, L2, L3, L3 and L2, and the internal angles of the base body are respectively beta1，β2，β3，β4，β5 And the thickness is T, and the material for forming the bridge tower base body is concrete.
The built-in type scatterer 2 is composed of fiber concrete, a cylinder with the height of T/2 is arranged in space, and the cylinder scatterer 2 is embedded along the inner wall of the matrix 1 until the tail end of the scatterer is completely immersed into the matrix.
The external scatterer 2 is formed by stacking two layers as shown in fig. 7, namely a circular rubber substrate 2-1 and a tubular steel plate 2-2, wherein the rubber base 2-1 is adhered to the inner side of the concrete bridge tower base body 1, and the steel pipe 2-2 is adhered to the substrate 2-1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A periodic composite structure damping type bridge tower is characterized in that: the periodic composite structure vibration damping type bridge tower comprises a bridge tower base body and a scattering body; a plurality of scatterers are arranged on the bridge tower base body; the scatterers are arranged on the bridge tower base body periodically;
on the basis of the periodic arrangement mode, a certain region scatterer which is periodically arranged in the bridge tower base body is divided and adjusted to form a local non-periodicity, so that the requirements of vibration reduction and vibration isolation are met.
2. A periodically composite structure damped pylon according to claim 1, wherein: the cross section of the bridge tower base body is quadrilateral, pentagonal or irregular.
3. A periodically composite structure damped pylon according to claim 1, wherein: the base material for forming the bridge tower is selected from concrete, steel-concrete composite materials or fiber reinforced composite materials.
4. A periodically composite structure damped pylon according to claim 1, wherein: a cavity structure is arranged in the bridge tower base body; the scatterer is an external scatterer or an internal scatterer; said
The external scatterers are arranged along the inner side wall of the cavity structure of the bridge tower base body; the built-in scatterer extends outwards from the inner side of the cavity structure of the bridge tower base body and is embedded into the bridge tower base body.
5. A periodically composite-structured damped pylon according to claim 1 or claim 4, wherein: the cross section of the external scatterer or the internal scatterer is rectangular or circular or triangular or geometric.
6. A periodically composite-structured damped pylon according to claim 1 or claim 4, wherein: the material for forming the external scatterer comprises metal, concrete, ceramic, silicon rubber or fiber reinforced composite material; and the external scatterers are periodically arranged according to a binary structure form, a ternary structure form or a multi-element structure form.
7. A periodically composite structure damped pylon according to claim 6, wherein: the external scatterers are periodically arranged on the bridge tower base body in a laminated layer mode through various materials, and the materials of the scatterers in the adjacent laminated layers are inconsistent.
8. A periodically composite-structured damped pylon according to claim 1 or claim 4, wherein: the material of the built-in scatterer comprises plastic, metal, ceramic, silicon rubber or fiber reinforced composite material; and the built-in scatterers are periodically arranged according to a binary structure form, a ternary structure form or a multi-element structure form.
9. A periodically composite structural damped pylon according to claim 8, wherein: the built-in scatterer is embedded into the bridge tower matrix from the inner side of the bridge tower matrix in a periodic manner by using plastic, metal, ceramic, silicon rubber or fiber reinforced composite materials; the embedding mode is pre-embedding and drilling.
10. The periodically composite structure damped pylon of claim 4, wherein: the external scatterers or the internal scatterers which are periodically arranged form a self band gap of the bridge tower by adjusting the position, arrangement mode or size of the scatterers, so that the transmission of waves in different frequency ranges is inhibited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120303.3A CN113832852A (en) | 2021-09-24 | 2021-09-24 | Periodic composite structure vibration reduction type bridge tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120303.3A CN113832852A (en) | 2021-09-24 | 2021-09-24 | Periodic composite structure vibration reduction type bridge tower |
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| Publication Number | Publication Date |
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| CN113832852A true CN113832852A (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111120303.3A Pending CN113832852A (en) | 2021-09-24 | 2021-09-24 | Periodic composite structure vibration reduction type bridge tower |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332783A (en) * | 2003-05-01 | 2004-11-25 | Ishikawajima Harima Heavy Ind Co Ltd | Vibration control method |
| CN102561174A (en) * | 2012-01-13 | 2012-07-11 | 东南大学 | Green shock and vibration absorbing bridge tower |
| CN108611957A (en) * | 2018-04-09 | 2018-10-02 | 东南大学 | A kind of period composite construction box beam |
| CN108643024A (en) * | 2018-04-09 | 2018-10-12 | 东南大学 | A kind of period composite construction setback plate |
| CN211036678U (en) * | 2019-10-29 | 2020-07-17 | 知与（杭州）科技有限公司 | Anti-seismic device for highway bridge |
| CN111945551A (en) * | 2020-07-28 | 2020-11-17 | 河海大学 | Tuned liquid energy dissipation and shock absorption pier structure |
| CN112523073A (en) * | 2020-11-20 | 2021-03-19 | 东南大学 | Thin-wall pier for arranging periodic oscillator |
-
2021
- 2021-09-24 CN CN202111120303.3A patent/CN113832852A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332783A (en) * | 2003-05-01 | 2004-11-25 | Ishikawajima Harima Heavy Ind Co Ltd | Vibration control method |
| CN102561174A (en) * | 2012-01-13 | 2012-07-11 | 东南大学 | Green shock and vibration absorbing bridge tower |
| CN108611957A (en) * | 2018-04-09 | 2018-10-02 | 东南大学 | A kind of period composite construction box beam |
| CN108643024A (en) * | 2018-04-09 | 2018-10-12 | 东南大学 | A kind of period composite construction setback plate |
| CN211036678U (en) * | 2019-10-29 | 2020-07-17 | 知与（杭州）科技有限公司 | Anti-seismic device for highway bridge |
| CN111945551A (en) * | 2020-07-28 | 2020-11-17 | 河海大学 | Tuned liquid energy dissipation and shock absorption pier structure |
| CN112523073A (en) * | 2020-11-20 | 2021-03-19 | 东南大学 | Thin-wall pier for arranging periodic oscillator |
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Application publication date: 20211224 |
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