CN116905543A - Positioning system and method for setting open caisson foundation by using deepwater bare rock - Google Patents
Positioning system and method for setting open caisson foundation by using deepwater bare rock Download PDFInfo
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- CN116905543A CN116905543A CN202311000709.7A CN202311000709A CN116905543A CN 116905543 A CN116905543 A CN 116905543A CN 202311000709 A CN202311000709 A CN 202311000709A CN 116905543 A CN116905543 A CN 116905543A
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- cable
- open caisson
- anchor
- caisson foundation
- bare rock
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- 239000011435 rock Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 71
- 230000000712 assembly Effects 0.000 claims abstract description 20
- 238000000429 assembly Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000013535 sea water Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 52
- 239000010959 steel Substances 0.000 claims description 52
- 238000007667 floating Methods 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
- B63B21/29—Anchors securing to bed by weight, e.g. flukeless weight anchors
Abstract
The invention discloses a positioning system and a method for setting an open caisson foundation by deepwater bare rock, and relates to the technical field of offshore bridge construction, wherein the positioning system comprises: the gravity anchors are used for being arranged on a bare rock seabed around the open caisson foundation at intervals; a first end of one of said cable assemblies is connected to a corresponding one of said gravity anchors; the plurality of cable collecting devices are arranged on the open caisson foundation, and one cable collecting device is connected with the second end of the corresponding cable assembly; each of the retraction devices is for retracting the corresponding cable assembly to position the open caisson foundation at a design location. The invention does not need to construct the anchor pier, effectively solves the problem of difficult construction of the anchor pier in the bare rock environment, ensures that the horizontal resistance of the gravity anchor is not changed along with the depth change of the sea water, and effectively solves the problem of insufficient horizontal rigidity of the anchor pier in the deep water environment.
Description
Technical Field
The invention relates to the technical field of offshore bridge construction, in particular to a positioning system and a positioning method for a deepwater bare rock setting open caisson foundation.
Background
Bridge construction gradually develops from inland river to marine environment, and the marine environment often has characteristics such as wind is big, unrestrained high, water depth, flow urgency, overburden shallow and bare rock. The traditional bored pile foundation has the defects of small horizontal rigidity, poor horizontal resistance, long water construction period, more auxiliary facilities and high risk, and can not meet the requirements of bridge foundations in the marine deepwater environment. The open caisson foundation is opposite to the pile foundation, has the advantages of high horizontal rigidity, high horizontal resistance, short construction period on water and fewer auxiliary facilities, can be particularly suitable for shallow coverage and bare rock environments, and is more and more favored by ocean deepwater bridge designers.
The positioning of the traditional open caisson foundation mainly adopts an anchor pier positioning system, and the main mode is as follows: and arranging anchor piers on the riverbed at the upstream and downstream of the open caisson foundation, and positioning the open caisson foundation by winding and unwinding cables on the anchor piers. However, the positioning system is mainly used for positioning the open caisson foundation under the conditions of shallow water and a covering layer, the construction of the anchor pier is difficult for the deep water in the bare rock environment, and the horizontal rigidity of the anchor pier is insufficient.
Disclosure of Invention
The embodiment of the invention provides a positioning system and a positioning method for setting an open caisson foundation by deepwater bare rock, which are used for solving the technical problem that a traditional anchor pier positioning system in the related technology is difficult to be suitable for the deepwater bare rock environment.
In a first aspect, a positioning system for setting a sunk foundation on a deepwater bare rock is provided, comprising:
a plurality of gravity anchors for spaced arrangement on the bare rock seabed around the open caisson foundation;
a cable assembly in one-to-one correspondence with a plurality of said gravitational anchors, a first end of one of said cable assemblies being connected to a corresponding said gravitational anchor;
the cable assemblies are arranged on the open caisson foundation, and one cable assembly is connected with the second end of the corresponding cable assembly; and
each of the retraction devices is for retracting the corresponding cable assembly to position the open caisson foundation at a design location.
In some embodiments, each of the cable retractors comprises:
the steering seat is arranged on the open caisson foundation and is used for changing the movement angle of the corresponding cable assembly;
the sliding rail is arranged on the open caisson foundation and is positioned at one side of the steering seat far away from seawater;
the conversion connector is arranged on the sliding rail and can slide along the sliding rail, and the first end of the conversion connector is connected with the second end of the corresponding cable assembly;
a steel strand bundle having a first end connected to a second end of the adapter;
the counter-force seat is arranged on the open caisson foundation and is positioned at one side of the sliding rail away from the steering seat;
the continuous jack is arranged on the counter-force seat and connected with the second end of the steel strand bundle, and the continuous jack is used for winding and unwinding the steel strand bundle and further winding and unwinding the corresponding cable assembly to position the open caisson foundation.
In some embodiments, each of the cable assemblies includes:
the two ends of the first cable are respectively provided with a first open cable joint and a first closed cable joint, and the first open cable joint is connected with the corresponding gravity anchor;
the side surface and the bottom end of the pontoon are respectively provided with a first auxiliary steel wire rope and a second auxiliary steel wire rope, and the first auxiliary steel wire rope and the second auxiliary steel wire rope are detachably connected with the first mooring rope;
and the two ends of the second cable are respectively provided with a second open cable joint and a second closed cable joint, the second open cable joint is connected with the first closed cable joint, and the second closed cable joint is connected with the first end of the corresponding conversion joint.
In some embodiments, each of the gravity anchors comprises:
an anchor body;
the tooth block is arranged at the bottom of the front end of the anchor body;
the cable anchor seat is arranged on the front end face of the anchor body and is connected with the corresponding first open cable joint.
In some embodiments, each of the gravity anchors further comprises:
the plurality of lifting seats are arranged on the upper end face of the anchor body at intervals.
In some embodiments, each of the gravity anchors further comprises:
the plurality of direction-adjusting cable seats are arranged on the upper end face of the anchor body at intervals.
In some embodiments, the front end surface of the anchor body is an inclined surface and an included angle between the front end surface of the anchor body and the upper end surface of the anchor body is 20-25 degrees.
In some embodiments, the middle portion of the anchor body is provided with an exhaust hole penetrating through the upper end face and the lower end face.
In a second aspect, a positioning method for setting a sunk well foundation by using bare rock in deep water is provided, and the positioning method comprises the following steps:
after a gravity anchor is connected with the first end of a corresponding cable assembly, the gravity anchor is thrown on a bare rock seabed around a sunk well foundation, and then the second end of the cable assembly is connected with a corresponding cable collecting device;
repeating the steps until the second ends of all the cable assemblies are connected with the corresponding cable collecting devices;
and (3) winding and unwinding the corresponding cable assemblies by using all the winding and unwinding devices so as to position the open caisson foundation at the designed position.
In some embodiments, the step of connecting a gravity anchor to the first end of the corresponding cable assembly, then throwing the gravity anchor to the bare rock seabed around the open caisson foundation, and then connecting the second end of the cable assembly to the corresponding cable assembly comprises:
connecting a first open cable joint of a first cable of a cable assembly with a corresponding gravity anchor, connecting a first auxiliary steel wire rope and a second auxiliary steel wire rope of a buoy of the cable assembly with the first cable, connecting a gravity anchor hoisting steel wire rope of a main hook of a floating crane with the gravity anchor, connecting a buoy hoisting steel wire rope of an auxiliary hook of the floating crane with the buoy, using the floating crane to synchronously hoist the gravity anchor and the buoy, and then synchronously lowering the floating crane and the buoy to a bare rock seabed around a sunk foundation;
connecting a second open cable joint of a second cable of the cable assembly with a first closed cable joint, releasing the connection of the first auxiliary steel wire rope and the second auxiliary steel wire rope with the first cable, paving the second cable along the seabed surface to the vicinity of the design position of the open caisson foundation, floating the prefabricated open caisson foundation to the vicinity of the design position, hoisting the second closed cable joint of the second cable above the top surface of the open caisson foundation by using a floating crane, connecting the second closed cable joint with a hoisting steel wire rope of a hoist on the top surface of the open caisson foundation, horizontally dragging the second closed cable joint by using the hoisting steel wire rope of the hoist to enable the second closed cable joint to pass through a steering seat of a retraction device, and connecting the second closed cable joint with a first end of a conversion joint of the retraction device.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a positioning system and a positioning method for setting a sunk well foundation by deepwater bare rock. Compared with the traditional anchor pier positioning system, the positioning system for setting the open caisson foundation by the deepwater bare rock provided by the embodiment of the invention does not need to construct an anchor pier, effectively solves the problem of difficult anchor pier construction in a bare rock environment, and simultaneously, the horizontal resistance of a gravity anchor is not changed along with the change of the sea water depth, and effectively solves the problem of insufficient horizontal rigidity of the anchor pier in the deepwater environment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a positioning system for setting a sunk well foundation on bare rock in deep water, which is provided by the embodiment of the invention;
FIG. 2 is a top view of FIG. 1 provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of a cable collecting device according to an embodiment of the present invention;
FIG. 4 is a top view of a cable assembly coupled to a gravity anchor provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a first cable or a second cable according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of a gravity anchor provided by an embodiment of the present invention;
fig. 7 is a construction schematic diagram of throwing a gravity anchor according to an embodiment of the present invention;
FIG. 8 is a schematic construction diagram of a second cable connected to a cable retractor according to an embodiment of the present invention;
reference numerals:
1. a gravitational anchor; 11. an anchor body; 111. an exhaust hole; 12. tooth blocks; 13. a cable anchor; 14. a lifting seat; 15. a direction-adjusting cable seat;
2. a cable assembly; 21. a first cable; 211. a first open socket; 212. a first closed socket; 22. a pontoon; 221. a first auxiliary wire rope; 222. a second auxiliary wire rope; 23. a second cable; 231. a second open cable joint; 232. a second closed cable joint;
3. a cable collecting device; 31. a steering seat; 32. a slide rail; 33. a conversion joint; 34. a steel strand bundle; 35. a counterforce seat; 36. a continuous jack;
4. a sunk well foundation;
5. a floating crane; 51. a main hook; 52. hoisting a steel wire rope by a gravity anchor; 53. an auxiliary hook; 54. hoisting a steel wire rope by a pontoon;
6. a hoist; 61. and hoisting the steel wire rope.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a positioning system for setting an open caisson foundation on deepwater bare rock, which can solve the technical problem that the traditional anchor pier positioning system is difficult to adapt to the deepwater bare rock environment.
Referring to fig. 1 and 2, an embodiment of the present invention provides a positioning system for setting a open caisson foundation by deepwater bare rock, including: a plurality of gravity anchors 1, cable assemblies 2 corresponding to the gravity anchors 1 one by one and a cable collecting device 3 corresponding to the cable assemblies 2 one by one.
A plurality of said gravity anchors 1 are intended to be arranged at intervals on the bare rock seabed around the open caisson foundation 4. A first end of one of the cable assemblies 2 is connected to a corresponding one of the gravity anchors 1. The plurality of the cable collecting devices 3 are arranged on the open caisson foundation 4, and one cable collecting device 3 is connected with the second end of the corresponding cable assembly 2.
Each of the retraction devices 3 is for retracting the corresponding cable assembly 2 to position the open caisson foundation 4 at a design position.
The positioning system for the open caisson foundation is provided with a plurality of gravity anchors, cable assemblies corresponding to the gravity anchors one by one and cable collecting devices corresponding to the cable assemblies one by one, the cable collecting devices are arranged on the open caisson foundation, and all cable assemblies corresponding to the cable collecting devices are collected and released, so that the open caisson foundation can be positioned at a designed position. Compared with the traditional anchor pier positioning system, the positioning system for setting the open caisson foundation by the deepwater bare rock provided by the embodiment of the invention does not need to construct an anchor pier, effectively solves the problem of difficult anchor pier construction in a bare rock environment, and simultaneously, the horizontal resistance of a gravity anchor is not changed along with the change of the sea water depth, and effectively solves the problem of insufficient horizontal rigidity of the anchor pier in the deepwater environment.
As an alternative embodiment, in an embodiment of the invention, referring to fig. 3, each of the collecting devices 3 includes: steering seat 31, slide rail 32, crossover sub 33, steel strand 34, counter-force seat 35 and continuous jack 36.
The steering seat 31 is arranged on the open caisson foundation 4 and is used for changing the movement angle of the corresponding cable assembly 2. The sliding rail 32 is arranged on the open caisson foundation 4 and is positioned at one side of the steering seat 31 far away from seawater. The adapter 33 is disposed on the sliding rail 32 and can slide along the sliding rail 32, and a first end of the adapter 33 is connected to a corresponding second end of the cable assembly 2. The first end of the steel strand 34 is connected to the second end of the adapter 33. The reaction seat 35 is disposed on the open caisson foundation 4 and is located at a side of the sliding rail 32 away from the steering seat 31. The continuous jack 36 is disposed on the reaction seat 35, the continuous jack 36 is connected with the second end of the steel strand 34, and the continuous jack 36 is used for winding and unwinding the steel strand 34, and further winding and unwinding the corresponding cable assembly 2 to position the open caisson foundation 4.
Specifically, the steering seat 31 is formed by welding steel plates, the top surface and the side plates are provided with arc surfaces, and the ratio of the diameter of the arc surfaces to the diameter of the cable is not less than 30 so as to reduce the bending stress of the cable. The adapter 33 is formed by the welding of steel sheet, adapter 33 bottom is provided with the roller to realize following slide rail 32 slides, can guarantee that the hawser does not twist reverse, can pass through the limiting plate will adapter 33 with slide rail 32 carries out spacingly, avoids adapter 33 breaks away from slide rail 32, further guarantees that the hawser does not twist reverse. The slide rail 32 is arranged by two channel steel back buckles, and the channel steel is connected with the channel steel in diameter through a steel plate. The steel strand bundle 34 consists of 30 steel strands with phi 15.2mm, and the bearing capacity is not less than 300t. The counter-force seat 35 is formed by welding steel plates and is welded with the top surface of the open caisson foundation 4 into a whole, and a round hole is formed in the middle of the counter-force seat 35 so that the steel strand 34 passes through. The continuous jack 36 has a load-bearing capacity of 350t. The continuous jack 36 is connected with the cable assembly 2 after being transited through the adapter 33 and the steel strand bundle 34, so that the problem that the cable assembly 2 cannot be directly tensioned through the continuous jack 36 is solved.
As an alternative embodiment, in one inventive example, referring to fig. 4 and 5, each of the cable assemblies 2 comprises: a first line 21, a buoy 22 and a second line 23. The first cable 21 and the second cable 23 may have a diameter of phi 115mm.
The two ends of the first cable 21 are respectively provided with a first open cable joint 211 and a first closed cable joint 212, and the first open cable joint 211 is connected with the corresponding gravity anchor 1.
The side and bottom of the pontoon 22 are respectively provided with a first auxiliary wire rope 221 and a second auxiliary wire rope 222, and the first auxiliary wire rope 221 and the second auxiliary wire rope 222 are detachably connected with the first cable 21.
The two ends of the second cable 23 are respectively provided with a second open cable joint 231 and a second closed cable joint 232, the second open cable joint 231 is connected with the first closed cable joint 212, and the second closed cable joint 232 is connected with the corresponding first end of the conversion joint 33.
The cable assembly 2 of the embodiment of the invention comprises a first cable 21, a pontoon 22 and a second cable 23, wherein the length of the first cable 21 is matched with the water depth at the design position of the gravity anchor 1, the gravity anchor 1 can be connected with the first cable 21 and the pontoon 22 on a ship in advance, the gravity anchor 1 is transported to a throwing sea area in a floating manner, the gravity anchor 1 is positioned by utilizing the whole lifting of the floating crane 5 and the positioning system of the floating crane 5, the throwing of the gravity anchor 1 is completed quickly during the small flow speed selection period, and the quick throwing of the gravity anchor 1 is realized.
As an alternative implementation, in an inventive example, referring to fig. 6, each of the gravity anchors 1 includes: anchor 11, tooth block 12 and cable anchor 13.
The anchor body 11 is of a concrete structure, the weight is 1000t level, the tooth block 12 is arranged at the bottom of the front end of the anchor body 11, the tooth block 12 can be formed by welding steel plates, and the tooth block 12 can penetrate into a covering layer or a weathered rock layer, so that the horizontal resistance of the gravity anchor 1 is improved. The cable anchor 13 is disposed on the front end surface of the anchor body 11, and the cable anchor 13 is connected with the corresponding first open cable joint 211.
Further, referring to fig. 6, each of the gravity anchors 1 further includes: the lifting seats 14 are arranged on the upper end face of the anchor body 11 at intervals, and the lifting seats 14 facilitate the whole lifting of the gravity anchor 1.
Further, referring to fig. 6, each of the gravity anchors 1 further includes: the device comprises a plurality of steering cable seats 15, wherein the steering cable seats 15 are arranged on the upper end face of an anchor body 11 at intervals, the steering cable seats 15 are used for adjusting the plane corner of a gravity anchor 1 when being used for anchoring, one end of a steering steel wire rope is tied on the steering cable seats 15, the other end of the steering steel wire rope is fixed on a tug, and the purpose of adjusting the angle of the gravity anchor 1 is achieved by winding and unwinding the steering steel wire rope through winch equipment on the tug.
Further, referring to fig. 6, the front end face of the anchor body 11 is an inclined face and has an included angle of 20 degrees to 25 degrees with the upper end face of the anchor body 11. The angle is similar to the inclination angle of the lower end of the first cable 21 in the stressed state so as to reduce eccentric stress of the cable anchor 13.
Further, as shown in fig. 6, the middle part of the anchor body 11 is provided with an air vent 111 penetrating through the upper end face and the lower end face, and the air vent 111 is arranged in the middle part of the anchor body 11 to ensure that bottom air is discharged through the air vent when the anchor body 11 is thrown, so that air is prevented from gathering at the bottom of the anchor body 11 to reduce the floating weight of the gravity anchor 1, and the horizontal resistance of the gravity anchor 1 can be further improved.
The embodiment of the invention also provides a use method of the positioning system for setting the open caisson foundation by the deepwater bare rock, which comprises the following steps:
after a gravity anchor 1 is connected with the first end of a corresponding cable assembly 2, the gravity anchor is thrown on a bare rock seabed around a sunk well foundation 4, and then the second end of the cable assembly 2 is connected with a corresponding cable collecting device 3;
repeating the steps until the second ends of all the cable assemblies 2 are connected with the corresponding cable collecting devices 3;
the corresponding cable assemblies 2 are retracted using all the retraction devices 3 to position the caisson foundation 4 at the design position.
According to the positioning method for setting the open caisson foundation by the deepwater bare rock, disclosed by the embodiment of the invention, the anchor pier is not required to be constructed, the problem that the anchor pier is difficult to construct in a bare rock environment is effectively solved, meanwhile, the horizontal resistance of the gravity anchor is not changed along with the depth change of seawater, and the problem that the horizontal rigidity of the anchor pier is insufficient in the deepwater environment by the anchor pier positioning system is effectively solved.
As an alternative implementation manner, in an embodiment of the present invention, the steps of connecting a gravity anchor 1 to a first end of a corresponding cable assembly 2, then throwing the gravity anchor on a bare rock seabed around a sunk foundation 4, and then connecting a second end of the cable assembly 2 to a corresponding cable collecting device 3 specifically include:
referring to fig. 7, a first open socket 211 of a first cable 21 of the cable assembly 2 is connected to a corresponding gravitational anchor 1. First auxiliary wire line 221 and second auxiliary wire line 222 of buoy 22 of line assembly 2 are connected to first line 21. The gravity anchor hoisting wire rope 52 of the main hook 51 of the floating crane 5 is connected to the gravity anchor 1, and the pontoon hoisting wire rope 54 of the auxiliary hook 53 of the floating crane 5 is connected to the pontoon 22. The gravity anchor 1 and the buoy 22 are lifted synchronously using the floating crane 5 and then lowered synchronously onto the bare rock seabed around the open caisson foundation 4.
The cable assembly 2 of the embodiment of the invention comprises a first cable 21, a pontoon 22 and a second cable 23, wherein the length of the first cable 21 is matched with the water depth at the design position of the gravity anchor 1, the gravity anchor 1 can be connected with the first cable 21 and the pontoon 22 on a ship in advance, the gravity anchor 1 is transported to a throwing sea area in a floating manner, the gravity anchor 1 is positioned by utilizing the whole lifting of the floating crane 5 and the positioning system of the floating crane 5, the throwing of the gravity anchor 1 is completed rapidly during the small flow rate (the flow rate is less than 1 m/s) is selected, and the rapid throwing of the gravity anchor 1 is realized.
Referring to fig. 8, the second open socket 231 of the second cable 23 of the cable assembly 2 is connected to the first closed socket 212, the first auxiliary wire rope 221 and the second auxiliary wire rope 222 are disconnected from the first cable 21, and the second cable 23 is laid along the seabed to the vicinity of the design position of the open caisson foundation 4. The prefabricated open caisson foundation 4 is floated to the vicinity of the design position, and the second closed cable joint 232 of the second cable 23 is lifted above the top surface of the open caisson foundation 4 by the floating crane 5. The second closed socket 232 is connected to a hoisting wire 61 of a hoist 6 on the top surface of the open caisson foundation 4. The second closed cable joint 232 is pulled horizontally by the hoisting wire rope 61 of the hoist 6 to pass through the steering seat 31 of the cable collecting device 3, and then the second closed cable joint 232 is connected with the first end of the conversion joint 33 of the cable collecting device 3.
In the embodiment of the invention, after the first cable 21 and the second cable 23 are connected, the second cable 23 is towed to the vicinity of the open caisson foundation 4 by using a towing wheel, then the second cable 23 is hoisted by using the floating crane 5, and the second cable 23 is quickly connected with the conversion connector 33 through the steering seat 31 by matching the hoist 6 on the top surface of the open caisson foundation 4 with the floating crane 5, so that the quick connection between the second cable 23 and the retraction device 3 is realized.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present invention, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.
Claims (10)
1. A positioning system for setting a sunk well foundation on deepwater bare rock, comprising:
a plurality of gravity anchors (1) for being arranged at intervals on the bare rock seabed around the open caisson foundation (4);
cable assemblies (2) in one-to-one correspondence with a plurality of the gravitational anchors (1), a first end of one of the cable assemblies (2) being connected with the gravitational anchor (1) in correspondence;
the cable collecting devices (3) are arranged on the open caisson foundation (4) in one-to-one correspondence with the cable assemblies (2), and one cable collecting device (3) is connected with the second end of the corresponding cable assembly (2); and
each of the retraction devices (3) is used for retracting the corresponding cable assembly (2) so as to position the open caisson foundation (4) at a design position.
2. Positioning system for a deepwater bare rock foundation according to claim 1, wherein each of the retraction devices (3) comprises:
a steering seat (31) arranged on the open caisson foundation (4) and used for changing the movement angle of the corresponding cable assembly (2);
the sliding rail (32) is arranged on the open caisson foundation (4) and is positioned at one side of the steering seat (31) away from seawater;
the conversion connector (33) is arranged on the sliding rail (32) and can slide along the sliding rail (32), and a first end of the conversion connector (33) is connected with a second end of the corresponding cable assembly (2);
a steel strand (34) having a first end connected to a second end of the adapter (33);
the counterforce seat (35) is arranged on the open caisson foundation (4) and is positioned at one side of the sliding rail (32) far away from the steering seat (31);
the continuous jack (36) is arranged on the counter-force seat (35), the continuous jack (36) is connected with the second end of the steel strand bundle (34), and the continuous jack (36) is used for winding and unwinding the steel strand bundle (34) and further winding and unwinding the corresponding cable assembly (2) to position the open caisson foundation (4).
3. Positioning system for a deep water bare rock set open caisson foundation according to claim 2, characterized in that each cable assembly (2) comprises:
the two ends of the first cable (21) are respectively provided with a first open cable joint (211) and a first closed cable joint (212), and the first open cable joint (211) is connected with the corresponding gravity anchor (1);
the side surface and the bottom end of the pontoon (22) are respectively provided with a first auxiliary steel wire rope (221) and a second auxiliary steel wire rope (222), and the first auxiliary steel wire rope (221) and the second auxiliary steel wire rope (222) are detachably connected with the first mooring rope (21);
and the two ends of the second cable (23) are respectively provided with a second open cable joint (231) and a second closed cable joint (232), the second open cable joint (231) is connected with the first closed cable joint (212), and the second closed cable joint (232) is connected with the first end of the corresponding conversion joint (33).
4. A positioning system for a deepwater bare rock-set open caisson foundation according to claim 3, characterized in that each of the gravity anchors (1) comprises:
an anchor body (11);
the tooth block (12) is arranged at the bottom of the front end of the anchor body (11);
and the cable anchor seat (13) is arranged on the front end surface of the anchor body (11), and the cable anchor seat (13) is connected with the corresponding first open cable joint (211).
5. The positioning system of a deepwater bare rock-set open caisson foundation according to claim 4, characterized in that each gravity anchor (1) further comprises:
and a plurality of lifting seats (14) which are arranged on the upper end surface of the anchor body (11) at intervals.
6. The positioning system of a deepwater bare rock-set open caisson foundation according to claim 4, characterized in that each gravity anchor (1) further comprises:
the plurality of direction-adjusting cable seats (15) are arranged on the upper end face of the anchor body (11) at intervals.
7. The positioning system for a deepwater bare rock-set open caisson foundation according to claim 4, wherein:
the front end face of the anchor body (11) is an inclined face and an included angle between the front end face of the anchor body (11) and the upper end face of the anchor body is 20-25 degrees.
8. The positioning system for a deepwater bare rock-set open caisson foundation according to claim 4, wherein: the middle part of the anchor body (11) is provided with an exhaust hole (111) penetrating through the upper end face and the lower end face.
9. A positioning method for setting a sunk foundation by using the deepwater bare rock, which is characterized by comprising the following steps of:
after a gravity anchor (1) is connected with the first end of a corresponding cable assembly (2), the gravity anchor is thrown on a bare rock seabed around a sunk well foundation (4), and then the second end of the cable assembly (2) is connected with a corresponding cable collecting device (3);
repeating the steps until the second ends of all the cable assemblies (2) are connected with the corresponding cable collecting devices (3);
and (3) winding and unwinding the corresponding cable assemblies (2) by using all the winding and unwinding devices so that the open caisson foundation (4) is positioned at the designed position.
10. The method for positioning a open caisson foundation for deep water bare rock placement according to claim 9, wherein the step of connecting a gravity anchor (1) to the first end of the corresponding cable assembly (2), then throwing the gravity anchor onto the bare rock seabed around the open caisson foundation (4), and then connecting the second end of the cable assembly (2) to the corresponding cable receiving device (3) specifically comprises:
connecting a first open cable joint (211) of a first cable (21) of a cable assembly (2) with a corresponding gravity anchor (1), connecting a first auxiliary steel wire rope (221) and a second auxiliary steel wire rope (222) of a buoy (22) of the cable assembly (2) with the first cable (21), connecting a gravity anchor hoisting steel wire rope (52) of a main hook (51) of a floating crane (5) with the gravity anchor (1), connecting a buoy hoisting steel wire rope (54) of a secondary hook (53) of the floating crane (5) with the buoy (22), using the floating crane (5) to synchronously hoist the gravity anchor (1) and the buoy (22), and then synchronously lowering the floating crane to a bare rock seabed around an open caisson foundation (4);
connecting a second open cable joint (231) of a second cable (23) of the cable assembly (2) with a first closed cable joint (212), releasing the connection of the first auxiliary steel wire rope (221) and the second auxiliary steel wire rope (222) with the first cable (21), laying the second cable (23) along the seabed surface to the vicinity of the design position of the open caisson foundation (4), floating the prefabricated open caisson foundation (4) to the vicinity of the design position, hoisting a second closed cable joint (232) of the second cable (23) above the top surface of the open caisson foundation (4) by using a floating crane (5), connecting the second closed cable joint (232) with a hoisting steel wire rope (61) of a hoist (6) on the top surface of the open caisson foundation (4), horizontally dragging the second closed cable joint (232) by using the hoisting steel wire rope (61) of the hoist (6) to pass through a steering seat (31) of the retractor device (3), and connecting the second closed cable joint (232) with a first end of a conversion joint (33) of the retractor device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311000709.7A CN116905543A (en) | 2023-08-09 | 2023-08-09 | Positioning system and method for setting open caisson foundation by using deepwater bare rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311000709.7A CN116905543A (en) | 2023-08-09 | 2023-08-09 | Positioning system and method for setting open caisson foundation by using deepwater bare rock |
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| Publication Number | Publication Date |
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| CN116905543A true CN116905543A (en) | 2023-10-20 |
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| CN202311000709.7A Pending CN116905543A (en) | 2023-08-09 | 2023-08-09 | Positioning system and method for setting open caisson foundation by using deepwater bare rock |
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| Country | Link |
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| CN (1) | CN116905543A (en) |
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- 2023-08-09 CN CN202311000709.7A patent/CN116905543A/en active Pending
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