CN104179183B - A kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration - Google Patents
A kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration Download PDFInfo
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- CN104179183B CN104179183B CN201410436593.6A CN201410436593A CN104179183B CN 104179183 B CN104179183 B CN 104179183B CN 201410436593 A CN201410436593 A CN 201410436593A CN 104179183 B CN104179183 B CN 104179183B
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- steel pipe
- vortex
- pipe pile
- induced vibration
- suppression
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Abstract
The invention provides a kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration; comprise vortex-induced vibration suppress arm, for install vortex-induced vibration suppress arm main platform body and for main platform body being fixed on the detachable clamping device on steel pipe; detachable clamping device is arranged on the downside of main platform body; during use, steel pipe pile is fixed in the middle of on the downside of main platform body, and vortex-induced vibration suppresses arm to arrange at equal intervals in steel pipe pile periphery.This restraining device; for the downtime after single pile sets, the steel pipe pile accomplished fluently is protected; this vortex-induced vibration suppression device is arranged on when needs on steel pipe pile; removed in time restarting engineering; so just can solve the technical problem to steel pipe pile in addition temporary protection when needing, and recyclable recycling.
Description
Technical field
The present invention relates to a kind of vortex-induced vibration suppression device, more particularly, relate to a kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration.
Background technology
Along with the development of economic construction, deep-water bridge pile foundation engineering is increasing, and wherein steel pipe pile becomes one of of paramount importance pile base model, and application widely.But steel pipe pile stake due to the impact of torrent, probably vortex-induced vibration effect can occur within the construction period, thus produce destruction to steel pipe pile, this situation has multiple case and occurs.This kind of destruction mainly occurs in the steel pipe pile construction period, and appear at and do not carry out rigidly fixing when being connected and existing with single pile cantilevered fashion between stake with stake, after many piles pylon establishes horizontal-associate, vortex-induced vibration not easily occurs usually.But profundal zone construction period is by impact that is meteorological, hydrologic condition, often there will be single pile and set the situation that rear Changes in weather is forced to shut-down, can there is larger potential safety hazard in the pile foundation of at this moment not setting up horizontal-associate.Mostly vortex-induced vibration suppression device conventional is at present that arranging passive vortex-induced vibration in steel tube surface suppresses structure as helical structure etc.; or arranging initiatively vortex-induced vibration suppresses structure as flow-disturbing current or air-stream generating device; these devices are all only suitable for being applied to be needed on the Deepwater Risers of digital preservation, is not suitable for the demand of steel pipe pile temporary protection.How the stake of temporary protection steel pipe pile exempts from destruction becomes an insoluble technical problem in pile foundation engineering.
Summary of the invention
The object of the present invention is to provide a kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration; for the downtime after single pile sets, the steel pipe pile accomplished fluently is protected; this vortex-induced vibration suppression device is arranged on when needs on steel pipe pile; being removed in time restarting engineering, so just can being solved the technical problem to steel pipe pile in addition temporary protection when needing.
Above-mentioned technical problem can be solved by following technological means: a kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration, comprise the main platform body that vortex-induced vibration suppresses arm and suppresses arm for installing vortex-induced vibration, during use, steel pipe pile is fixed in the middle of on the downside of main platform body, vortex-induced vibration suppresses arm to arrange at equal intervals in steel pipe pile periphery, it is characterized in that: the recoverable protective device of suppression deep water steel pipe pile vortex-induced vibration also comprises the detachable clamping device for main platform body being fixed on steel pipe, detachable clamping device is arranged on the downside of main platform body.By operating detachable clamping device, the main platform body of arm is suppressed to be fixed on steel pipe pile top by being provided with vortex-induced vibration, vortex-induced vibration suppresses the tail flow field of arm after steel pipe pile circumferential lateral surface just can change steel pipe pile, the regularity destroying tail flow field whirlpool is released, thus avoid the granting frequency of the natural frequency of steel pipe and whirlpool to be close, covibration does not produce thus, vortex-induced vibration also just suppressed live.
On the basis of technique scheme, the present invention can do following improvement:
Main platform body is made up of the frame plate of an equilateral polygon structure, a detachable type shield and the suspension ring of being located at detachable type shield top, wherein frame plate is the equilateral polygon structure that centre has motor axis hole, the joint on its every bar limit is provided with the jointed shaft of axis horizontal, the lower end of detachable type shield is fixed on the centre on the upside of frame plate by securing member (as bolt), and the side of detachable type shield and top are provided with the perforate that power supply cable passes.
Frame plate can be designed to equilateral triangle, square, regular pentagon, regular hexagon, the positive shape such as heptagon, octagon, octagon structure on demand.In order to weight reduction, lightening hole can also be set on frame plate.Regular polygon structure is convenient to around steel pipe pile, arrange vortex vibration uniformly and equidistantly and is suppressed arm, even if also can effectively play vortex vibration inhibitory action when water (flow) direction changes like this.
Detachable clamp system comprises the drive motors be arranged in detachable type shield, moving runner, several connecting rod and is fixed on the inwall back-up block of connecting rod wherein one end, wherein the motor shaft vertical of drive motors is passed down through the motor axis hole in the middle of frame plate, and moving runner is positioned at the below of frame plate and is connected with the motor shaft of drive motors; One end relative with inwall back-up block on connecting rod is equally spaced hinged on the cylindrical of moving runner, the axis of jointed shaft connecting connecting rod and moving runner parallels with the axis of the motor shaft of drive motors, and the twice of length of connecting rod and the diameter sum of moving runner are greater than the internal diameter of steel pipe pile; The cable connecting drive motors passes from the perforate detachable type shield and gathers to joint current line.The minimum number of connecting rod is three, also can be the numbers needed such as four, five.During use, moving runner, connecting rod and inwall back-up block are stretched into steel pipe pile inwall, start drive motors, moving runner is rotated, drivening rod rotates, inwall back-up block is held out against on steel pipe pile inwall, thus plays the effect be fixed on by whole vortex-induced vibration suppression device on steel pipe pile.
For playing good fixed effect, the radian of inwall back-up block external diameter is identical with the radian of steel pipe inner wall.
Vortex-induced vibration suppresses arm to comprise mechanical rocking arm, the first hydraulic cylinder, the second hydraulic cylinder, rocker-arm link and suppression bar, and wherein the lower end of mechanical rocking arm is connected with suppressing bar by rocker-arm link, the two ends of rocker-arm link respectively with mechanical rocking arm with suppress bar hinged; The piston rod of the first hydraulic cylinder and the upper end thereof of mechanical rocking arm, cylinder body and the frame plate of the first hydraulic cylinder are hinged; Piston rod and the rocker-arm link of the second hydraulic cylinder are hinged, and cylinder body and the mechanical rocking arm of the second hydraulic cylinder are hinged; Machinery rocking arm is hinged by the jointed shaft of the edge of frame plate and frame plate, the pin joint of machinery rocking arm and frame plate is between the pin joint and the pin joint of the second hydraulic cylinder and mechanical rocking arm of the first hydraulic cylinder and mechanical rocking arm, and the electric wire connecting the first hydraulic cylinder and the second hydraulic cylinder passes from the perforate of detachable type shield upper side and gathers to joint current line.The collaborative expanding-contracting action of the first hydraulic cylinder and the second hydraulic cylinder realizes mechanical rocking arm with the jointed shaft between itself and frame plate for axle rotates, drive and suppress bar shake, realize adjustment and suppress angle and distance between bar and steel pipe pile, with the object of the steel pipe pile of adaptive different size.
Suppress bar to be flat strip bar structure, suppress the outer surface of bar to be provided with the conducting element of multiple projection, conducting element be arranged in parallel each other.Conducting element plays shunting action, thus suppresses the generation of vortex-induced vibration and greatly reduce the energy of vortex-induced vibration, keeps the stability of steel pipe pile.
Suppression bar is hollow structure, and its inner surface is provided with magnechuck, and the electric wire connecting magnechuck passes through from suppression bar inside, after passing, then is passed by the perforate of detachable type shield upper side and gathers to joint current line from suppression masthead portion.After energising, magnechuck can be adsorbed on steel pipe, thus ensures to suppress bar can clamp steel pipe pile firmly.
Also be provided with a dismountable storage battery in detachable type shield, described battery is connected with described magnechuck by electric wire.In the downtime, can construction equipment be withdrawn and disconnect the connection of joint current line and power supply after the present invention being fixed on steel pipe pile top, now continued to power to magnechuck by battery, to ensure that magnechuck can work on, keep absorption affinity.When in battery, electricity exhausts, can split out and change or charge.
Usefulness of the present invention is: when construction period steel pipe pile exists with single cantilever pile form; platform body of the present invention is fixed on the top of steel pipe pile by its clamping device; vortex-induced vibration suppresses armlet outside around steel pipe pile; carry out interim protection to steel pipe pile, the same day, cyclostrophic was good, when needing to continue construction; this protective device can be removed; thus continue construction, ensure that the safety of engineering is successfully carried out, and the present invention can recycle well.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is the stereogram 1 (being provided with detachable clamp system) of main platform body;
Fig. 3 is the stereogram 1 (being provided with detachable clamp system) of main platform body;
Fig. 4 is the stereogram of detachable clamp system;
Fig. 5 is the stereogram that vortex-induced vibration suppresses arm.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described further.
Suppress the recoverable protective device of deep water steel pipe pile vortex-induced vibration as shown in Figure 1, comprise vortex-induced vibration and suppressing arm 3, suppressing the main platform body 1 of arm 3 and the detachable clamping device 2 for being fixed on the downside of main platform body 1 on steel pipe pile for installing vortex-induced vibration.
As shown in Figure 2, main platform body 1 is wherein made up of frame plate 11, detachable type shield 12 of an octagon structure and the suspension ring 13 of being located at detachable type shield top, wherein the center of frame plate 11 has motor axis hole, plate has lightening hole 15 with it, in addition, the joint on every bar limit of frame plate 11 is provided with the jointed shaft 14 of axis horizontal.And the lower end of detachable type shield 12 is bolted on the centre on the upside of frame plate, its side and top are provided with the perforate that power supply cable passes, and in addition, the inside of detachable type shield 12 is also provided with a dismountable storage battery.
As shown in Figure 3, detachable clamp system 2 comprises the drive motors 21 be arranged in detachable type shield 12, moving runner 22, four connecting rods 23 and is fixed on the inwall back-up block 24 of connecting rod 23 wherein one end, wherein drive motors 21 is servomotor, and its motor shaft vertical is passed down through the motor axis hole in the middle of frame plate 11 and is fixed on frame plate 11.Moving runner 22 is positioned at the below of frame plate 11 and is connected with the motor shaft of drive motors 21; One end relative with inwall back-up block 24 on four connecting rods 23 is equally spaced hinged on the cylindrical of moving runner, the axis connecting the jointed shaft of connecting rod 23 and moving runner 22 parallels with the axis of the motor shaft of drive motors 21, and the twice of connecting rod 23 length and the diameter sum of moving runner 22 are greater than the internal diameter of steel pipe pile; The cable connecting drive motors 21 passes from the perforate detachable type shield 12.As shown in Figure 4, vortex-induced vibration suppresses arm 3 to have eight groups, often group comprises mechanical rocking arm 31, first hydraulic cylinder 32, second hydraulic cylinder 33, rocker-arm link 34 and suppresses bar 35, wherein the lower end of mechanical rocking arm 31 is connected with suppression bar 35 by rocker-arm link 34, and the two ends of rocker-arm link 34 are respectively with mechanical rocking arm 31 with suppress bar 35 hinged; The piston rod of the first hydraulic cylinder 32 and the upper end thereof of mechanical rocking arm 31, cylinder body and the frame plate 11 of the first hydraulic cylinder 32 are hinged; Piston rod and the rocker-arm link 34 of the second hydraulic cylinder 33 are hinged, and cylinder body and the mechanical rocking arm 31 of the second hydraulic cylinder 33 are hinged; Machinery rocking arm 31 is hinged by the jointed shaft of the edge of frame plate 11 and frame plate 11, the pin joint of machinery rocking arm 31 and frame plate 11 is at the pin joint of the first hydraulic cylinder 32 and mechanical rocking arm 31 with between the second hydraulic cylinder 33 and the pin joint 31 of mechanical rocking arm, and the electric wire connecting the first hydraulic cylinder 32 and the second hydraulic cylinder 33 passes from the perforate of detachable type shield 12 upper side and gathers to joint current line.Suppression bar 35 is the strip bar structure of flat hollow, (one side towards steel pipe pile is suppress the inner surface of bar to suppress the outer surface of bar 35, relative one side is outer surface) be provided with the conducting element 351 of multiple projection, conducting element 351 be arranged in parallel each other.Conducting element 351 shunting actions, can suppress the generation of vortex-induced vibration and greatly reduce the energy of vortex-induced vibration, keep the stability of steel pipe pile.The inner surface of bar 35 is suppressed to be provided with magnechuck 352, the electric wire connecting magnechuck passes through from suppression bar inside, after passing from suppression bar 35 top, passed by the perforate of detachable type shield 12 upper side again and gather to joint current line, in addition, the dismountable storage battery installed in detachable type shield 12 is also connected with magnechuck 352 by electric wire.After energising, magnechuck produces magnetic force, can be adsorbed on steel pipe, thus ensure to suppress bar 35 can clamp steel pipe pile firmly, the connection of joint current line and power supply can be disconnected after single unit system installation is fixing, now continued to power to magnechuck 352 by battery, to ensure that magnechuck can work on, keep absorption affinity.
By detachable clamping device 2, steel pipe pile is fixed in the middle of on the downside of main platform body during use, vortex-induced vibration suppresses arm 3 to arrange at equal intervals in steel pipe pile periphery, energising allows drive motors work, moving runner is rotated, and drivening rod rotates, and is held out against by inwall back-up block on steel pipe pile inwall, thus make the present invention be fixed on steel pipe pile, drive hydraulic cylinder action to make the tight cladding steel pile tube of suppression bar, make magnechuck produce magnetic force simultaneously, suppression bar is adsorbed on steel pipe pile.When torrent comes then, conducting element on arm is suppressed just to serve the effect of shunting, thus the tail flow field after change steel pipe pile, the regularity destroying original tail flow field whirlpool is released, thus avoid the granting frequency of the natural frequency of steel pipe and whirlpool to be close, covibration does not produce thus, vortex-induced vibration also just suppressed live.The reverse operating when needs are stopped work, make magnechuck power-off, drive hydraulic cylinder action to make suppression bar leave steel pipe pile, the drive motors of detachable thing clamping device reversely rotates, platform body gets loose, and re-uses lifting appliance and the present invention is removed by suspension ring.
Above embodiment is for understanding the present invention's; not the those of ordinary skill of limitation of the present invention, related fields, on the basis of technical scheme described in claim; can also make multiple change or modification, these changes or modification should be understood to still belong to protection scope of the present invention.
Claims (6)
1. one kind is suppressed the recoverable protective device of deep water steel pipe pile vortex-induced vibration, comprise the main platform body that vortex-induced vibration suppresses arm and suppresses arm for installing vortex-induced vibration, during use, steel pipe pile is fixed in the middle of on the downside of main platform body, described vortex-induced vibration suppresses arm to arrange at equal intervals in steel pipe pile periphery, it is characterized in that: the recoverable protective device of described suppression deep water steel pipe pile vortex-induced vibration also comprises the detachable clamping device for main platform body being fixed on steel pipe, described detachable clamping device is arranged on the downside of main platform body, described main platform body is by the frame plate of an equilateral polygon structure, a detachable type shield and the suspension ring composition being located at detachable type shield top, wherein frame plate is the equilateral polygon structure that centre has motor axis hole, the joint on its every bar limit is provided with the jointed shaft of axis horizontal, the lower end of described detachable type shield is fixed on the centre on the upside of frame plate by securing member, the side of detachable type shield and top are provided with the perforate that power supply cable passes, described vortex-induced vibration suppresses arm to comprise mechanical rocking arm, first hydraulic cylinder, second hydraulic cylinder, rocker-arm link and suppression bar, wherein the lower end of mechanical rocking arm is connected with suppression bar by rocker-arm link, the two ends of described rocker-arm link are respectively with mechanical rocking arm with suppress bar hinged, the piston rod of the first hydraulic cylinder and the upper end thereof of mechanical rocking arm, cylinder body and the described frame plate of the first hydraulic cylinder are hinged, piston rod and the rocker-arm link of the second hydraulic cylinder are hinged, and cylinder body and the mechanical rocking arm of the second hydraulic cylinder are hinged, machinery rocking arm is hinged by the jointed shaft of the edge of described frame plate and frame plate, the pin joint of machinery rocking arm and frame plate is between the pin joint and the pin joint of the second hydraulic cylinder and mechanical rocking arm of the first hydraulic cylinder and mechanical rocking arm, the electric wire connecting the first hydraulic cylinder and the second hydraulic cylinder passes from the perforate of described detachable type shield upper side and gathers to joint current line, described suppression bar is flat strip bar structure, the outer surface of bar is suppressed to be provided with the conducting element of multiple projection, described conducting element be arranged in parallel each other, described suppression bar is hollow structure, its inner surface is provided with magnechuck, the electric wire connecting magnechuck passes through from suppression bar inside, after passing from suppression masthead portion, passed by the perforate of detachable type shield upper side again and gather to joint current line.
2. the recoverable protective device of suppression deep water steel pipe pile vortex-induced vibration according to claim 1, is characterized in that: described frame plate is octagon structure.
3. the recoverable protective device of suppression deep water steel pipe pile vortex-induced vibration according to claim 2, it is characterized in that: described detachable clamping device comprises the drive motors be arranged in described detachable type shield, moving runner, several connecting rod and is fixed on the inwall back-up block of connecting rod wherein one end, wherein the motor shaft vertical of drive motors is passed down through the motor axis hole in the middle of described frame plate, and moving runner is positioned at the below of described frame plate and is connected with the motor shaft of drive motors; One end relative with inwall back-up block on described connecting rod is equally spaced hinged on the cylindrical of moving runner, the axis of jointed shaft connecting connecting rod and moving runner parallels with the axis of the motor shaft of drive motors, and the twice of length of connecting rod and the diameter sum of moving runner are greater than the internal diameter of steel pipe pile; The cable connecting drive motors passes from the perforate described detachable type shield and gathers into joint current line.
4. the recoverable protective device of suppression deep water steel pipe pile vortex-induced vibration according to claim 3, is characterized in that: the quantity of described connecting rod is four.
5. the recoverable protective device of suppression deep water steel pipe pile vortex-induced vibration according to claim 4, is characterized in that: the radian of described inwall back-up block external diameter is identical with the radian of steel pipe inner wall.
6. the recoverable protective device of suppression deep water steel pipe pile vortex-induced vibration according to claim 1, is characterized in that: be also provided with a dismountable storage battery in detachable type shield, described battery is connected with described magnechuck by electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436593.6A CN104179183B (en) | 2014-08-29 | 2014-08-29 | A kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436593.6A CN104179183B (en) | 2014-08-29 | 2014-08-29 | A kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration |
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| CN104179183A CN104179183A (en) | 2014-12-03 |
| CN104179183B true CN104179183B (en) | 2016-04-20 |
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| CN201410436593.6A Expired - Fee Related CN104179183B (en) | 2014-08-29 | 2014-08-29 | A kind of recoverable protective device suppressing deep water steel pipe pile vortex-induced vibration |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110792658B (en) * | 2019-10-29 | 2021-07-06 | 江苏科技大学 | Marine magnetic suspension vortex-induced vibration suppression device |
| CN113718828B (en) * | 2021-09-16 | 2022-09-06 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power foundation |
| CN114991186B (en) * | 2022-05-17 | 2024-01-19 | 长安大学 | Device and method for restraining central jet flow of deepwater steel cofferdam segment vibration |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3274837B2 (en) * | 1998-05-28 | 2002-04-15 | 石油公団 | Drilling stabilizer |
| CN101418675B (en) * | 2008-11-07 | 2011-12-07 | 中国海洋石油总公司 | Method and device for restraining vortex-induced vibration by underwater pipeline |
| CN201635671U (en) * | 2009-11-18 | 2010-11-17 | 中国海洋石油总公司 | Passive flow control device capable of suppressing vortex-induced vibration of long and thin flexible riser |
| CN102943634A (en) * | 2012-11-16 | 2013-02-27 | 西南石油大学 | Free-rotation impeller device for inhibiting eddy induced vibration of marine riser |
| CN203515366U (en) * | 2013-09-16 | 2014-04-02 | 西南石油大学 | Device for hindering vortex-induced vibration of trepanning and diverting spiral strakes |
| CN204040034U (en) * | 2014-08-29 | 2014-12-24 | 浙江海洋学院 | Be applied to the recoverable vortex-induced vibration suppression device of steel pipe pile |
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Granted publication date: 20160420 Termination date: 20170829 |