CN212506192U - Pile and barrel combined jacket supporting structure - Google Patents
Pile and barrel combined jacket supporting structure Download PDFInfo
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- CN212506192U CN212506192U CN202020661335.9U CN202020661335U CN212506192U CN 212506192 U CN212506192 U CN 212506192U CN 202020661335 U CN202020661335 U CN 202020661335U CN 212506192 U CN212506192 U CN 212506192U
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Abstract
The utility model discloses a stake bucket combination formula jacket bearing structure, including a plurality of pipe support legs, still include: the barrel-shaped foundation is fixedly connected to the bottom ends of the conduit frame legs, and a foundation empty chamber is arranged inside the barrel-shaped foundation; the pile foundations penetrate through and are fixedly arranged inside the conduit frame legs and the barrel type foundation, and gaps are respectively arranged between the pile foundations and the conduit frame legs and the barrel type foundation; and the water and gas pipeline is fixedly connected with the conduit frame leg and is connected with a water and gas channel arranged on the basic empty cabin through a control valve. The utility model discloses effectively reduced the jacket seabed degree of difficulty of making level, improved pile foundation precision positioning accuracy and bearing structure wholeness, provide new reference for marine electrical platform bearing structure.
Description
Technical Field
The utility model belongs to the technical field of ocean engineering, concretely relates to stake bucket combination formula jacket bearing structure.
Background
With the progressive saturation of offshore wind farm development, the development of offshore wind energy over offshore distances of 50km has received increasing attention. The offshore electric platform is used as an electric energy collection center of an offshore wind power plant and is a key facility for power transmission and transformation. Taking an offshore booster station as an example, a traditional offshore booster station support structure usually adopts a pile foundation and jacket support mode, and the construction steps are approximately: leveling the seabed → setting the bottom of the jacket → hoisting the pile foundation → piling the pile hammer → leveling the pile head by cutting, and the like, and finally hoisting the upper block and debugging the equipment.
In order to achieve the aim of cost reduction and efficiency improvement, the offshore wind farm is developed in a larger scale, the offshore electrical capacity is increased correspondingly, and the power transmission and transformation precision electrical equipment is increased correspondingly, so that the offshore wind farm has higher requirements on the construction precision of the platform support.
However, conventional offshore electrical platform support structures face the following difficulties:
1) the surface of the jacket sea bed is difficult to level, the sea bed condition is complex, the leveling effect of the construction equipment is often poor due to the influence of low surface soil strength, tide and the like.
2) The pile foundation has large deviation, the pile foundation is impacted by a pile hammer in the pile driving process, the horizontal displacement of the pile foundation can deviate, the elevation deviation can be solved by cutting the redundant part of the pile top, and the relative position of the horizontal plane is not easy to control, so that the upper chunk installation main column is difficult to place.
3) The connection strength between the pipe frame leg and the pile foundation is weak, and the pipe frame leg and the pile foundation are difficult to form a whole to bear external load together.
Therefore, a new offshore electrical platform supporting structure needs to be provided, so that the construction precision of the offshore electrical platform is ensured, and the bearing requirement is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide an easily make level, simple to operate, horizontal deviation adjustable stake bucket combination formula jacket bearing structure.
The utility model discloses a following technical scheme realizes:
a stake bucket combination formula jacket bearing structure, includes a plurality of jacket legs, still includes:
the barrel-shaped foundation is fixedly connected to the bottom ends of the conduit frame legs, and a foundation empty chamber is arranged inside the barrel-shaped foundation;
the pile foundations penetrate through and are fixedly arranged inside the conduit frame legs and the barrel type foundation, and gaps are respectively arranged between the pile foundations and the conduit frame legs and the barrel type foundation;
and the water and gas pipeline is fixedly connected with the conduit frame leg and is connected with a water and gas channel arranged on the basic empty cabin through a control valve.
As a preferred technical scheme, a plurality of cabin dividing plates are arranged in the basic empty cabin, and correspondingly, the cabin dividing plates divide the basic empty cabin into a plurality of cabins respectively connected with the water and gas channel.
As a preferable technical scheme, the barrel-shaped foundation is fixedly connected with the conduit frame legs through a plurality of inclined supports.
As a more preferable technical scheme, the number of the inclined supports is 8, and the inclined supports are annularly arranged on the periphery of the conduit frame leg.
As a more preferable technical scheme, the hydraulic support device further comprises a deviation adjusting device fixedly connected with the inner side of the inclined support, wherein the deviation adjusting device comprises an oil conveying pipe, a hydraulic oil cylinder connected with the oil conveying pipe, a piston rod movably connected with the hydraulic oil cylinder, a circular plate used for fixing the hydraulic oil cylinder and a circular pipe used for fixing the circular plate.
As a most preferred solution, the number of deviation adjusters is set to an odd number.
As a preferable technical scheme, the water gas pipeline and the conduit frame legs are supported and fixedly connected through round pipes.
As a preferable technical scheme, a rib plate is fixedly connected to a connection part between the subdivision plate and the inner wall of the barrel-shaped foundation.
As a preferable technical scheme, the outer side of the top cover of the basic empty cabin is provided with a corrugated concave-convex structure.
As a preferable technical solution, the jacket support frame further comprises a support frame for supporting the jacket legs, and the support frame comprises a jacket horizontal cross brace and a jacket diagonal brace which are fixedly connected between two adjacent jacket legs.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the jacket of the utility model is convenient to install, does not need the special treatment of the surface of the sea bed, and can meet the requirement of gradient through the adjustment of the negative pressure of the barrel-shaped foundation.
2. The utility model discloses a pile foundation deviation is controllable, leans on through cutting and horizontal top, guarantees the precision of pile foundation top relative position.
3. The utility model discloses can strengthen the effect intensity between bucket type basis, pipe frame leg and the pile foundation, lean on pressure effect through the horizontal top of piston rod, guarantee that the three forms whole external load that bears jointly.
4. The utility model discloses a foundation structure demolishs the convenience, and recoverable, no marine environmental pollution risk such as bucket type basis, jacket.
Drawings
Fig. 1 is a schematic front structural view of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is a schematic sectional structure of the present invention;
FIG. 4 is a schematic perspective view of the middle barrel-shaped foundation and the pile foundation of the present invention;
FIG. 5 is a first schematic diagram of the cross-sectional structure of FIG. 4;
FIG. 6 is a second schematic cross-sectional view of FIG. 4;
FIG. 7 is a schematic structural diagram of the deviation adjusting device of the present invention;
fig. 8 is a schematic front view of the present invention applied to an offshore electrical platform;
fig. 9 is a construction flow chart of the present invention.
Reference numerals: 1-a conduit frame leg, 2-a support frame, 3-a barrel foundation, 4-a pile foundation, 5-a water and gas pipeline, 6-a control valve, 7-a water and gas channel, 8-an inclined support, 9-a deviation adjusting device, 10-a round pipe support, 11-an upper module, 21-a conduit frame horizontal cross brace, 22-a conduit frame inclined brace, 31-a foundation empty chamber, 32-a cabin dividing plate, 33-a rib plate, 34-a concave-convex structure, 3 a-a barrel foundation outer wall, 3 b-a barrel foundation inner wall, 3 c-a barrel foundation top cover, 9 a-an oil delivery pipe, 9 b-a hydraulic oil cylinder, 9 c-a piston rod, 9 d-a round plate and 9e round pipe.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
A pile-barrel combined jacket support structure and a construction method thereof according to the present invention will be described in detail with reference to fig. 1 to 9.
Example 1:
as shown in fig. 1 to 9, a pile-bucket combined jacket support structure includes a plurality of jacket legs 1, and further includes:
the barrel type foundation 3 is fixedly connected to the bottom ends of the conduit frame legs 1, the barrel type foundation 3 comprises a barrel type foundation outer wall 3a, a barrel type foundation inner wall 3b and a barrel type foundation top cover 3c which are connected in a sealing mode, and a foundation empty chamber 31 is formed inside the barrel type foundation 3;
the pile foundation 4 penetrates through and is fixedly arranged inside the conduit frame legs 1 and the barrel-shaped foundation inner wall 3b, and gaps are respectively arranged between the pile foundation 4 and the conduit frame legs 1 and the barrel-shaped foundation inner wall 3 b;
and the water and gas pipeline 5 is fixedly connected with the conduit frame leg 1 and is connected with a water and gas channel 7 arranged on the basic empty chamber 31 through a control valve 6.
Further, in another embodiment, a plurality of compartment plates 32 are disposed in the base chamber 31, and accordingly the compartment plates 32 divide the base chamber 31 into a plurality of chambers respectively connected to the water gas passages 7.
The number of the compartment plates 32 is preferably 4, and the basic empty compartment 31 is evenly divided into 4 compartments. The top covers of the four cabins of the barrel-shaped foundation 3 are respectively provided with a water-gas channel 7 which is respectively connected with a water-gas pipeline 5 through a control valve 6 and used for extracting water gas in the cabin, and the functions of negative pressure penetration and leveling are achieved.
Further, in another embodiment, the barrel-shaped foundation 3 and the conduit frame legs 1 are fixedly connected through a plurality of inclined supports 8.
Further, in another embodiment, the number of the diagonal braces 8 is 8, and the diagonal braces are annularly arranged around the catheter holder leg 1.
Wherein, the bearing diagonal 8 is the triangle-shaped structure, and the middle part is hollow out construction, and the preferred 8 that set up of quantity, the hoop sets up around conduit frame leg 1 to respectively through welding and barrel foundation 3 and conduit frame leg 1 fixed connection.
Further, in another embodiment, the hydraulic control device further comprises a deviation adjusting device 9 fixedly connected with the inner side of the inclined support 8, and the deviation adjusting device 9 comprises an oil delivery pipe 9a, a hydraulic oil cylinder 9b connected with the oil delivery pipe 9a, a piston rod 9c movably connected with the hydraulic oil cylinder 9b, a circular plate 9d used for fixing the hydraulic oil cylinder 9b, and a circular pipe 9e used for fixing the circular plate 9 d.
Further, in another embodiment, the number of the deviation adjustment means 9 is set to an odd number.
The number of the deviation adjusting devices 9 is preferably set to 5, the deviation adjusting devices are annularly fixed in the middle of the inclined supports 8 on the barrel-shaped foundation 3, the oil delivery pipe 9a is fixed on the nearby water-gas pipeline 5 through a steel cable tie, and the stroke of the piston rod 9c is larger than the gap between the inclined supports 8 and the pile foundation 4.
Further, in another embodiment, the water gas pipeline 5 is fixedly connected with the conduit frame leg 1 through a circular pipe support 10.
The water and gas pipeline 5 is fixed with the conduit frame legs 1 through the circular pipe supports 10, the upper portion of the water and gas pipeline is connected with a vacuumizing device on an installation ship, meanwhile, the water and gas pipeline 5 can also be used as a grouting pipe, and the contact strength of a top cover of the barrel-shaped foundation 3 and a sea bed surface is improved through grouting to different cabins.
Further, in another embodiment, a rib plate 33 is fixedly connected to a connection between the subdivision plate 32 and the inner wall of the barrel-shaped foundation 3.
The subdivision plates 32 are used for dividing the basic empty cabin 31 to form different cabins, and rib plates 33 are arranged between the inner walls and the subdivision plates 32 and used for improving the buckling resistance.
Further, in another embodiment, the outside of the roof of the base cavity 31 has a corrugated relief structure 34.
The corrugated concave-convex structure 34 is arranged on the outer side of the top cover of the basic empty cabin 31, so that the anti-scouring capability of the barrel-shaped foundation 3 is improved;
further, in another embodiment, the device further comprises a support frame 2 for supporting the jacket legs 1, wherein the support frame 2 comprises a jacket horizontal cross brace 21 and a cross-connected jacket diagonal brace 22 which are fixedly connected between two adjacent jacket legs 1.
The utility model also provides a construction method of stake bucket combination formula jacket bearing structure, including following step:
(a) the structures of the support frame 2, the barrel-shaped foundation 3, the deviation adjusting device 9 and the like are assembled on land and transported to the designed position of an offshore wind farm electrical platform by an installation ship, and the pile foundation 4 can also be transported to the same position of an offshore wind farm by the installation ship;
(b) accurately positioning the sinking position of the barrel-shaped foundation 3 by using an instrument, fixing a steel wire rope on the jacket lifting lug, hoisting the assembled structure by using a floating crane, and then gradually putting the assembled structure into water until the barrel-shaped foundation 3 sinks below the mud surface of the seabed;
(c) the barrel-shaped foundation 3 sinks under the action of self weight and enters the mud surface, then the water-gas pipeline 5 is connected with a vacuumizing device on the installation ship, water and gas are sucked in the foundation empty chamber 31 to form negative pressure, the barrel-shaped foundation 3 is slowly pressed into the foundation under the action of the negative pressure, the negative pressure suction amount of different chambers is adjusted in the process, the inclination of the conduit frame is adjusted until the top cover 3c of the barrel-shaped foundation reaches the mud surface of the seabed, and then grouting equipment on the installation ship can utilize the water-gas pipeline 5 to perform grouting in different chambers of the barrel-shaped foundation 3;
(d) sinking the pile foundation 4 along the conduit frame leg 1 by using a floating crane, sinking the pile foundation 4 below the mud surface of the seabed through the barrel-shaped foundation 3, and then piling by using a piling hammer to reach a specified depth;
(e) cutting the pile head by using cutting equipment, adjusting the relative distance of the plane of the pile head by using the deviation adjusting device 9, meeting the installation precision requirement of the main column of the upper module 11, and grouting the gap between the guide pipe frame leg 1 and the pile foundation 4;
(f) and controlling the deviation adjusting device 9 to enable the bucket type foundation inclined support 8 and the pile foundation 4 to keep a contact extrusion state, and ensuring that the pile foundation 4, the conduit frame leg 1 and the bucket type foundation 3 are integrated, so that the construction and installation of the pile-bucket combined type conduit frame supporting structure are finished.
Further, in the step (c), in the process of the negative pressure penetration of the barrel foundation 3, the top of the conduit frame is provided with a level gauge, the process is monitored in real time, and the control valve 6 is adjusted to control the water and gas extraction conditions of different cabins, so that the conduit frame is ensured to meet the requirement of inclination.
Further, in the step (c), when grouting is performed by using the water gas pipeline 5, the grouting pressure is kept constant, and when grouting is difficult, grouting is stopped to prevent the barrel-shaped foundation top cover 3c from being separated from the soil body due to overlarge pressure.
Further, in the step (d), during the piling of the pile foundation 4, the top of the conduit frame leg 1 is protected from impact damage regardless of the vertical pile and the inclined pile.
Further, in the step (e), the number of the deviation adjusting devices 9 is set to be odd, and the piston rods 9c are locally thickened within a certain range of the position abutting against the pile foundation 4.
Further, in the step (f), the deviation adjusting device 9 is abutted to integrate the pile foundation 4, the conduit frame leg 1 and the bucket foundation 3, and the relative displacement between the tops of the pile foundations is monitored in the process, so that the position accuracy is prevented from being influenced by over-adjustment.
The working principle of an embodiment of the utility model is as follows:
firstly, can be earlier with on the land the utility model discloses a jacket bearing structure prefabrication installation is accomplished, utilizes the installation ship to drag offshore wind farm assigned position, and after the accurate positioning, utilize the floating crane will assemble the structure and hoist and gradually put into the aquatic, until bucket type basis 3 whole insert below the seabed mud face.
And then, the assembled structure sinks by utilizing the self weight to form a closed space in the barrel-shaped basic cabin, after the self weight sinking is finished, the assembled structure is connected with a vacuumizing device on an installation ship through a water gas pipeline 5 to suck water gas in the basic cabin 31, and the barrel-shaped foundation 3 further sinks due to the pressure difference generated by the upper and lower top covers until the designed depth is reached. In the process, different negative pressures in the cabins are extracted by adjusting the control valve 6, so that the aim of adjusting the inclination of the jacket is fulfilled.
And after leveling is finished, grouting is carried out in the closed cabin of the barrel type foundation 3 through the water-gas pipeline 5 by using grouting equipment on an installation ship. The pile foundation 4 is lifted by the floating crane, passes through the inner cavities of the conduit frame legs 1 and the barrel-shaped foundation 3, sinks below a mud surface under the action of self weight, and the pile foundation 4 is driven by the pile driving barge until the designed depth is reached.
After piling is finished, the cutting machine is used for cutting the pile head of the pile foundation 4, and the flatness of the pile head is guaranteed. The hydraulic oil cylinder 9b and the piston rod 9c are controlled through the oil conveying pipe 9a, the jacking force is generated to act on the pile foundation 4 to adjust the horizontal deviation, and the requirement of the installation accuracy of the main column of the upper block 11 is met. And (3) grouting the gap between the conduit frame leg 1 and the pile foundation 4.
The deviation adjusting device 9 is adjusted to abut against the pile foundation 4, and the piston rod 9c is kept to abut against the pile foundation 4, so that the pipe frame leg 1, the pile foundation 4 and the barrel foundation 3 form a whole.
Up to this point, the installation of the pile-bucket combined jacket support structure is completed, and then the installation of the upper block 11 and the commissioning of the electrical equipment are performed.
The utility model discloses preparation, transportation and installation flow gather as shown in figure 9.
The utility model discloses broken through the sea bed difficulty of making level in traditional marine electric platform construction, the pile foundation precision is not high and the structure between function shortcoming such as intensity is weak, introduced barrel type basis negative pressure and levelled and deviation adjusting device rectifies and lean on with the top, the utility model discloses structural style is reasonable, and construction method is convenient, very is fit for the bearing structure as marine engineering structures such as marine electric platform, and corresponding construction method is worth popularizing and applying.
According to the description and drawings of the present invention, those skilled in the art can easily make or use the combined jacket support structure of the present invention, and can produce the positive effects described in the present invention.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (10)
1. The utility model provides a stake bucket combination formula jacket bearing structure, includes a plurality of jacket legs (1), its characterized in that still includes:
the barrel-shaped foundation (3) is fixedly connected to the bottom ends of the conduit frame legs (1), and a foundation empty chamber (31) is arranged inside the barrel-shaped foundation (3);
the pile foundation (4) penetrates through and is fixedly arranged inside the conduit frame legs (1) and the barrel-shaped foundation (3), and gaps are respectively arranged between the pile foundation and the conduit frame legs (1) and the barrel-shaped foundation (3);
and the water and gas pipeline (5) is fixedly connected with the conduit frame legs (1) and is connected with a water and gas channel (7) arranged on the basic empty chamber (31) through a control valve (6).
2. A pile-bucket modular jacket support structure according to claim 1, wherein a plurality of deck plates (32) are provided in the base compartment (31), the deck plates (32) correspondingly dividing the base compartment (31) into a plurality of compartments respectively connected to the water gas channel (7).
3. A pile-bucket modular jacket support structure according to claim 1, wherein the bucket foundation (3) and the jacket legs (1) are fixedly connected by means of a plurality of diagonal braces (8).
4. A pile-bucket modular jacket support structure according to claim 3, wherein the number of diagonal braces (8) is set to 8, arranged circumferentially around the jacket legs (1).
5. A pile-bucket modular jacket support structure according to claim 3, further comprising a deviation-adjusting device (9) fixedly connected to the inner side of the diagonal brace (8), wherein the deviation-adjusting device (9) comprises an oil delivery pipe (9a), a hydraulic cylinder (9b) connected to the oil delivery pipe (9a), a piston rod (9c) movably connected to the hydraulic cylinder (9b), a circular plate (9d) for fixing the hydraulic cylinder (9b), and a circular tube (9e) for fixing the circular plate (9 d).
6. The pile-bucket modular jacket support structure of claim 5, wherein: the number of the deviation adjusting devices (9) is set to be odd.
7. A pile-bucket modular jacket support structure according to claim 1, wherein the water-gas line (5) is fixedly connected to the jacket legs (1) by means of a round tube support (10).
8. A pile-bucket modular jacket support structure according to claim 2, wherein a rib plate (33) is fixedly connected to a connection between the deck plate (32) and the inner wall of the bucket foundation (3).
9. A pile-bucket modular jacket support structure according to claim 1, wherein the outside of the roof of the base empty compartment (31) has a corrugated relief structure (34).
10. A pile and bucket modular jacket support structure according to claim 1, further comprising a support frame (2) for supporting the jacket legs (1), the support frame (2) including a jacket horizontal cross brace (21) and a cross-connected jacket diagonal brace (22) fixedly connected between two adjacent jacket legs (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020661335.9U CN212506192U (en) | 2020-04-27 | 2020-04-27 | Pile and barrel combined jacket supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020661335.9U CN212506192U (en) | 2020-04-27 | 2020-04-27 | Pile and barrel combined jacket supporting structure |
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| Publication Number | Publication Date |
|---|---|
| CN212506192U true CN212506192U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020661335.9U Active CN212506192U (en) | 2020-04-27 | 2020-04-27 | Pile and barrel combined jacket supporting structure |
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|---|---|
| CN (1) | CN212506192U (en) |
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2020
- 2020-04-27 CN CN202020661335.9U patent/CN212506192U/en active Active
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