CN112377556A - Combined vibration damper for suspension tunnel pipe body and anchor cable - Google Patents
Combined vibration damper for suspension tunnel pipe body and anchor cable Download PDFInfo
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- CN112377556A CN112377556A CN202011140480.3A CN202011140480A CN112377556A CN 112377556 A CN112377556 A CN 112377556A CN 202011140480 A CN202011140480 A CN 202011140480A CN 112377556 A CN112377556 A CN 112377556A
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- anchor
- damper
- pipe section
- node block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/06—Constructions, or methods of constructing, in water
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a combined vibration damper for a suspended tunnel pipe body and anchor cables, wherein the pipe body is formed by splicing pipe sections, the anchor cables are respectively arranged on two sides of each pipe section, and the combined vibration damper comprises an anchoring plate which is in an arc shape and is fixedly attached to the bottom of each pipe section; a vertical damper is arranged in the middle of the bottom of the anchoring plate, and the bottom of the vertical damper is connected with a node block; the front side and the rear side of the node block are respectively provided with a telescopic stabilizer bar, and the end part of the telescopic stabilizer bar, which is far away from the node block, is obliquely and upwards connected to the pipe section; the left side and the right side of each node block are respectively provided with a T-shaped rod, each T-shaped rod comprises a vertical rod and a horizontal rod, two ends of each horizontal rod are respectively provided with an anchor rope damper, and the end parts, far away from the horizontal rods, of the anchor rope dampers are perpendicularly connected to the anchor ropes. The invention has the advantages of clear structure and reliable performance, can simultaneously inhibit the vibration of the anchor cable and the pipe body of the underwater suspended tunnel, and is convenient to install, overhaul and maintain.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a combined vibration damping device for a suspended tunnel pipe body and an anchor cable.
Background
The suspension tunnel mainly comprises a pipe body, an anchor cable, a foundation, a revetment section and the like, and has the advantages of large spanning capability, adaptability to deep water construction, all-weather operation, good environmental protection and economical efficiency and the like. It is considered to be a new traffic structure with the most challenging and developing potential in the 21 st century.
The anchor cable and the pipe body of the suspension tunnel are generally flexible members with the slenderness ratio of more than 100, and are easy to excite flow-induced vibration under the action of ocean current. The long-term continuous vibration of the structure can not only lead to fatigue failure, but also can generate resonance phenomenon when the fluid force excitation frequency is close to the structure natural vibration frequency, thereby bringing great potential safety hazard to the suspended tunnel structure. Currently, dampers are the most commonly used vibration damping devices in engineering construction. Because the pipe body suspended in water lacks the mounting platform of external attenuator, the attenuator of anchor rope can be installed on the seabed basis, but places the water level darker, and the construction degree of difficulty is big, is unfavorable for daily equipment inspection and maintenance. Therefore, a suspension tunnel vibration damping device which is simple to install and can effectively restrain the vibration of the anchor cable and the pipeline is needed.
Disclosure of Invention
The invention aims to provide a combined vibration damper for a pipe body and an anchor cable of a suspension tunnel, which is used for reducing the vibration response of the suspension tunnel under the action of environment and use load, improving the structural stability and meeting the requirements of convenience in installation and maintenance.
In order to achieve the above purpose, the invention provides the following technical scheme:
a combined vibration damper for a suspension tunnel pipe body and anchor cables is characterized in that the pipe body is formed by splicing pipe sections, the anchor cables are respectively arranged on two sides of each pipe section, one end, far away from each pipe section, of each anchor cable is fixedly connected to a water-bottom foundation, each combined vibration damper comprises an anchoring plate, each anchoring plate is arc-shaped and is fixedly attached to the bottom of each pipe section;
a vertical damper is arranged in the middle of the bottom of the anchoring plate, and the bottom of the vertical damper is connected with a node block;
the two sides of the node block along the length direction of the pipe section are respectively provided with a telescopic stabilizer bar, and the end part of the telescopic stabilizer bar, which is far away from the node block, is obliquely and upwards connected to the pipe section;
the node piece is followed the perpendicular to pipe section length direction's both sides are equipped with T shape pole respectively, T shape pole includes montant and horizontal pole, the one end of montant connect in the node piece, other end fixed connection in the relative centre of horizontal pole, the both ends of horizontal pole are equipped with the anchor rope attenuator respectively, the anchor rope attenuator is kept away from the tip of horizontal pole is connected perpendicularly on the anchor rope.
It is further provided that the vertical damper is hinged to the anchor plate such that the vertical damper is rotatable in a vertical plane in which the pipe section lies.
A further arrangement is that the node block is hinged to the bottom end of the vertical damper such that the node block is rotatable in the vertical plane of the pipe section.
The telescopic stabilizer bar is further arranged in that two ends of the telescopic stabilizer bar are respectively buckled with the node blocks and the bottom of the pipe section through pull rings.
The further arrangement is that a friction damping device is arranged in the telescopic stabilizer bar.
The T-shaped rod and the node block are buckled by a pull ring.
The further arrangement is that the vertical rods and the cross rods are perpendicular to the anchor cables.
Compared with the prior art, the invention has the advantages that: the invention provides a combined vibration damper for a suspension tunnel pipe body and an anchor cable, which has the advantages of clear structure and reliable performance, can simultaneously play a role in inhibiting the vibration of the anchor cable and the pipe body of the suspension tunnel in water, and is convenient to install, overhaul and maintain.
Drawings
FIG. 1 is a schematic view of the overall structure of a suspension tunnel equipped with the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
fig. 3 is a schematic cross-sectional structure of the present invention.
Fig. 4 is a schematic longitudinal sectional structure of the present invention.
Fig. 5 is a schematic view of the vibration direction of the structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further specifically described below by way of embodiments in combination with the accompanying drawings.
Example (b): a combined vibration damper for a suspended tunnel pipe body and an anchor cable is shown in figures 1-4, wherein the suspended tunnel pipe body is formed by connecting pipe sections 1 end to end, and the pipe sections 1 are used as suspended tunnel sections and used for bearing vehicle traffic. The main structure of the invention comprises an anchoring plate 2, a vertical damper 3, a telescopic stabilizing rod 4, a node block 5, a T-shaped rod 6 and an anchor rope damper 7.
Wherein, anchor plate 2 is convex steel sheet, and laminating 1 bottoms of pipeline section are through high strength bolt fixed connection, and anchor rope 8 is the anchor of suspension tunnel body, and suspension tunnel body is connected to one end, and the other end is fixed on submarine basis.
The top of the vertical damper 3 is hinged to the middle of the bottom of the anchoring plate 2, so that the vertical damper has a small amount of rotational freedom in a vertical plane where the pipe section 1 is located, namely the rotational direction of the vertical damper is along the front-back direction of the pipe section 1; the bottom of the vertical damper 3 is hinged with a node block 5, and the rotating direction of the node block 5 relative to the vertical damper 3 is consistent with the rotating direction of the vertical damper 3 relative to the pipe section 1.
For convenience of illustration, the above structure defines the two sides of the pipe section 1 along its own length direction as the front-back direction, and the two sides perpendicular to the length direction of the pipe section 1 as the left-right direction.
The front side and the rear side of the node block 5 are respectively connected with a telescopic stabilizer bar 4, the other end of the telescopic stabilizer bar 4 is obliquely and upwards connected to the bottom of the pipe section 1, and the pipe section 1, the vertical damper 3 and the telescopic stabilizer bar 4 form a right-angled triangle. In this embodiment, the telescopic stabilizer bar 4 is a telescopic bar including a friction damping device, and has a certain energy consumption effect in addition to enhancing the stability of the vertical damper 3.
The left side and the right side of the node block 5 are respectively connected with a T-shaped rod 6, each T-shaped rod 6 comprises a vertical rod and a transverse rod, one end of each vertical rod is fixedly connected to the opposite middle of each transverse rod, one end of each vertical rod, which is far away from each transverse rod, is connected to the node block 5, and each vertical rod is perpendicular to the anchor cable 8; anchor rope dampers 7 are arranged at two ends of the cross rod respectively, one ends, far away from the cross rod, of the anchor rope dampers 7 are fixedly connected to the anchor ropes, and the cross rod and the anchor rope dampers 7 are perpendicular to the anchor ropes 8.
In this embodiment, the both ends of the telescopic stabilizer bar 4 and the one end of the T-shaped bar 6 close to the node block 5 all adopt the connection mode of the pull ring fastening with relatively high degree of freedom, more specifically, the node block 5 is provided with a pull ring in the front and back, four directions of left and right sides respectively, the both ends of the telescopic stabilizer bar 4, the one end of the T-shaped bar 6 close to the node block 5 is also provided with a pull ring respectively, similarly, the bottom of the pipe section 1 is also provided with a pull ring for the telescopic stabilizer bar 4 to connect, when connecting, the pull rings are buckled with each other through the pull ring, and the support and.
The suspension tunnel is arranged in water with a certain depth, when water flows through the suspension tunnel, the pipe section 1 and the anchor cable 8 which belong to the flexible structure are prone to flow-induced vibration, as shown in fig. 5, the pipe section 1 mainly vibrates in the direction of an arrow a, and the anchor cable 8 mainly vibrates in the direction of an arrow b.
1. When the pipe section 1 vibrates up and down, the pipe section can drive the anchoring plate 2 fixedly connected with the bottom of the pipe section to vibrate up and down together, and the amplitude is reduced by dissipating energy through the vertical damper 3; meanwhile, the friction damper in the telescopic stabilizer bar 4 also participates in damping and energy consumption. Vertical damper 3 vibrates from top to bottom and transmits for T shape pole 6 rather than bottom fixed connection through node piece 5, and the T shape pole of being connected with anchor rope 8 can provide certain vertical restoring force for vertical damper 3 and telescopic stabilizer 4. The whole combined vibration damping system realizes internal stress balance and achieves the aim of vibration damping through the energy consumption of each damper.
2. When the anchor cable 8 vibrates along the front and rear directions of the pipe section 1, the two anchor cable dampers 7 connected with the anchor cable alternately perform tension and compression energy consumption, so that the amplitude of the anchor cable is reduced. When the anchor cable 8 vibrates inside and outside, the anchor cable damper 7 connected with the anchor cable simultaneously performs tension and compression energy consumption. The vibration force of the anchor cable 8 is transmitted to the T-shaped rod 6 after being partially reduced through the anchor cable damper 7, and then transmitted to the pipe section after being partially further reduced through the vertical damper 3 and the telescopic stabilizer bar 4.
3. By installing the combined vibration damping device disclosed by the invention at the joint part of the suspended tunnel pipe body and the anchor cable, the internal damper of the device can dissipate energy, and meanwhile, the aim of damping the pipe body and the anchor cable is fulfilled. The self-balancing type suspension tunnel vibration damper forms a self-balancing stress system with a suspension tunnel component, and can effectively solve the problem that the suspension tunnel in water is lack of a mounting platform of the vibration damper.
In this embodiment, the damper is used to reduce kinetic energy, and is widely applied to structural engineering, so the specific type of each damper is not limited in this embodiment, and only the requirements of construction and use can be met.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. A combined vibration damper for a suspension tunnel pipe body and anchor cables is characterized in that the combined vibration damper comprises an anchoring plate, the anchoring plate is arc-shaped and is fixedly attached to the bottom of the pipe section;
a vertical damper is arranged in the middle of the bottom of the anchoring plate, and the bottom of the vertical damper is connected with a node block;
the two sides of the node block along the length direction of the pipe section are respectively provided with a telescopic stabilizer bar, and the end part of the telescopic stabilizer bar, which is far away from the node block, is obliquely and upwards connected to the pipe section;
the node piece is followed the perpendicular to pipe section length direction's both sides are equipped with T shape pole respectively, T shape pole includes montant and horizontal pole, the one end of montant connect in the node piece, other end fixed connection in the relative centre of horizontal pole, the both ends of horizontal pole are equipped with the anchor rope attenuator respectively, the anchor rope attenuator is kept away from the tip of horizontal pole is connected perpendicularly on the anchor rope.
2. The combined vibration damping device for suspension tunnel pipe and anchor cable as claimed in claim 1, wherein said vertical damper is hinged to said anchor plate such that said vertical damper can rotate in the vertical plane of said pipe section.
3. The combined damping device for suspended tunnel pipe and anchor line of claim 2, wherein said node block is hinged to the bottom end of said vertical damper, so that said node block can rotate in the vertical plane of said pipe section.
4. The combined vibration damping device for the suspended tunnel pipe body and the anchor cable as claimed in claim 1, wherein two ends of the telescopic stabilizer bar are fastened to the node block and the bottom of the pipe section by pull rings respectively.
5. The combined vibration damping device for the suspension tunnel pipe body and the anchor cable as claimed in claim 1, wherein a friction damping device is arranged in the telescopic stabilizer bar.
6. The combined damping device for suspension tunnel pipes and anchor cables as claimed in claim 1, wherein said T-shaped bar is fastened to said node block by a pull ring.
7. The combined damping device for suspension tunnel pipes and anchor lines of claim 1, wherein the vertical rods and the horizontal rods are perpendicular to the anchor lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140480.3A CN112377556B (en) | 2020-10-22 | 2020-10-22 | Combined vibration damper for suspension tunnel pipe body and anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140480.3A CN112377556B (en) | 2020-10-22 | 2020-10-22 | Combined vibration damper for suspension tunnel pipe body and anchor cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112377556A true CN112377556A (en) | 2021-02-19 |
| CN112377556B CN112377556B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011140480.3A Active CN112377556B (en) | 2020-10-22 | 2020-10-22 | Combined vibration damper for suspension tunnel pipe body and anchor cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263216A (en) * | 2021-11-30 | 2022-04-01 | 重庆安晟浩建筑工程有限公司 | Wave flow impact retarding device for suspension tunnel |
Citations (5)
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| CN103469728A (en) * | 2013-09-25 | 2013-12-25 | 无锡市弘谷振控技术有限公司 | External stay cable type damping device |
| KR20140085665A (en) * | 2012-12-26 | 2014-07-08 | 주식회사 포스코 | Viscoelastic material damping system and collecting system of seabed mineral resources having the same |
| CN209146602U (en) * | 2018-10-29 | 2019-07-23 | 长安大学 | A kind of Multi-purpose pipeline to suspend in water |
| CN210315897U (en) * | 2019-06-12 | 2020-04-14 | 武汉汇盟铁路配件有限公司 | Municipal pipeline sliding support with shock-absorbing function |
| CN111577983A (en) * | 2019-02-15 | 2020-08-25 | 中石化石油工程技术服务有限公司 | Take sea pipe suspension float of self-adaptation displacement compensation |
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2020
- 2020-10-22 CN CN202011140480.3A patent/CN112377556B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140085665A (en) * | 2012-12-26 | 2014-07-08 | 주식회사 포스코 | Viscoelastic material damping system and collecting system of seabed mineral resources having the same |
| CN103469728A (en) * | 2013-09-25 | 2013-12-25 | 无锡市弘谷振控技术有限公司 | External stay cable type damping device |
| CN209146602U (en) * | 2018-10-29 | 2019-07-23 | 长安大学 | A kind of Multi-purpose pipeline to suspend in water |
| CN111577983A (en) * | 2019-02-15 | 2020-08-25 | 中石化石油工程技术服务有限公司 | Take sea pipe suspension float of self-adaptation displacement compensation |
| CN210315897U (en) * | 2019-06-12 | 2020-04-14 | 武汉汇盟铁路配件有限公司 | Municipal pipeline sliding support with shock-absorbing function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263216A (en) * | 2021-11-30 | 2022-04-01 | 重庆安晟浩建筑工程有限公司 | Wave flow impact retarding device for suspension tunnel |
| CN114263216B (en) * | 2021-11-30 | 2024-08-02 | 重庆安晟浩建筑工程有限公司 | Wave flow impact buffer device for suspension tunnel |
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| CN112377556B (en) | 2022-04-12 |
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