CN104775446A - Cylindrical pier for fixing water structure and mounting and constructing method of cylindrical pier - Google Patents

Cylindrical pier for fixing water structure and mounting and constructing method of cylindrical pier Download PDF

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Publication number
CN104775446A
CN104775446A CN201410018362.3A CN201410018362A CN104775446A CN 104775446 A CN104775446 A CN 104775446A CN 201410018362 A CN201410018362 A CN 201410018362A CN 104775446 A CN104775446 A CN 104775446A
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CN
China
Prior art keywords
hollow cylinder
pile
cylinder pier
pier
concrete
Prior art date
Application number
CN201410018362.3A
Other languages
Chinese (zh)
Inventor
黄灿光
Original Assignee
广东强光海洋工程有限公司
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Application filed by 广东强光海洋工程有限公司 filed Critical 广东强光海洋工程有限公司
Priority to CN201410018362.3A priority Critical patent/CN104775446A/en
Publication of CN104775446A publication Critical patent/CN104775446A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/40Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds in open water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/06Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for immobilising, e.g. using wedges or clamping rings
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • E02D19/04Restraining of open water by coffer-dams, e.g. made of sheet piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/18Foundations formed by making use of caissons
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • E02D27/425Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/52Submerged foundations, i.e. submerged in open water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/52Submerged foundations, i.e. submerged in open water
    • E02D27/525Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/06Constructions, or methods of constructing, in water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/44Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile

Abstract

The invention generally relates to a cylindrical pier mounting and constructing method for fixing of a water structure. A cylindrical pier is a concrete precast hollow cylindrical pier and is characterized in that at least four pile columns are inserted and piled in the water bottom to ensure fixing in a water area with the water structure which is mounted in a reserved manner, and therefore at least one portion of each pile column stretches out of the water bottom, supports are correspondingly fixed between the pile columns, and the positions between the pile columns are fixed; the hollow cylindrical pier is inserted into the water until the water bottom, the pile columns are wrapped by the hollow cylindrical pier, and the pile columns provide one part of supporting force for supporting the hollow cylindrical pier; waterstop concrete is poured into the bottom of the hollow cylindrical pier through a pipeline, and therefore a waterstop concrete layer is formed between the bottom of the hollow cylindrical pier and the water bottom; accumulated water in the hollow cylindrical pier is pumped out, and the cylindrical pier serves as a temporary cofferdam; the pile columns are cut off at the positions with a bearing table to be formed, the broken pile heads are exposed out of preset reinforcing steel bars, and bearing table reinforcing steel bars are connected to the reinforcing steel bars; and bearing table concrete is poured into the bearing table reinforcing steel bars until the bearing table reinforcing steel bars are submersed, and therefore the bearing table for supporting the hollow cylindrical pier is formed.

Description

Boat structure is fixing by cylinder pier and construction method of installation thereof
Technical field
The present invention relates generally to the fixing hollow cylinder pier of the ocean platform such as boat structure, especially aquatic building, offshore wind turbine, Offshore Bridges and construction method of installation thereof, avoid and adopt Temporary Cofferdam to construct cushion cap, greatly reduce the manufacturing cost of ocean platform, hollow cylinder pier serves as the safety that Temporary Cofferdam also improves operating personnel within it simultaneously.
Background technology
In the process of exploitation resource waterborne, especially marine resources, support base is needed to construct boat structure, such as wind energy on the sea, ocean energy, marine city etc.This base can be floating base, also can be the base being fixed on the bottom or sea bed.The not easily anchoring under the offshore depth of water is no more than 50 meters of situations of floating base, and once anchor chain fracture, base can be floating without destination, forms danger to other marine users.Offshore support base should adopt fixed base.
Immediate offshore area has sediment soft clay layer more, variable thickness.The application number of the earlier application and the applicant that are entitled as " supporting offshore wind turbine; bridge; the buoyant support fixed platform of marine works " of the application number 201210034805.9 of the applicant is the earlier application of 201210104898.8 be entitled as " offshore wind farm; bridge and marine works local buoyancy ocean platform and the construction method " marine site that shallow and Soft Soil Layer can scoop away mainly for Soft Soil Layer, is preferably applicable to the thin and marine site that basement rock is very shallow of Soft Soil Layer.
Known ocean platform comprises the braced structures be made up of one or more piers and the terrace part be made up of beam slab system.Consolidation pile cushion cap bottom cylinder pier, by pile foundation support tube pier.Cushion cap is positioned at seabed, and common way adopts temporary steel cofferdam to complete building of cushion cap.The employing of this Temporary Cofferdam mounting and construction method takes time and effort.If a kind of avoiding can be adopted to adopt the construction method of installation of Temporary Cofferdam to construct ocean platform, especially cylinder pier, certainly will can reduce construction cost, improve efficiency of construction.
In addition, if suitable measure can be found to realize land fabrication component and then on the water or marine assembled, certainly will modularization, batch production and manufacture relevant boat structure or ocean platform on a large scale, provide safety, fast construct the feasibility of this class formation.
Summary of the invention
An object of the present invention is to propose the fixing cylinder pier of boat structure and construction method of installation thereof for weak soil waters, especially coastal waters weak soil seabed, thus the construction sequence of being constructed the cushion cap for cylinder pier by Temporary Cofferdam can be omitted, significantly reduce the efficiency of construction that construction cost improves a pier and thus whole platform simultaneously.In addition, without the need to underwater operation, the risk of subaqueous construction can also be decreased, improve build guality and the working security of cushion cap.
Therefore, according to an aspect of the present invention, provide a kind of boat structure fixing cylinder pier construction method of installation, wherein said cylinder pier is concrete prefabricated hollow cylinder pier, and described method comprises:
Guarantee to fix by least four pile inserted to plays to the bottom, thus the stretching out from the bottom at least partially of each pile in the waters of predetermined installation boat structure, correspondingly fixed support between described pile, makes the position between them fix;
Insert hollow cylinder pier until water-bed in water, wherein said hollow cylinder pier surrounds described pile, and described pile provides a part to support the support force of described hollow cylinder pier;
Via the bottom perfusion sealing concrete of pipeline to described hollow cylinder pier, thus form sealing layer of concrete between the bottom and the bottom of hollow cylinder pier;
Ponding in described hollow cylinder pier is found time, serves as Temporary Cofferdam;
Blocked by pile in the position that will form cushion cap, broken pile head exposes default reinforcing bar, and at described reinforcing bar place overlap joint cushion cap reinforcing bar; And
Perfusion cushion cap concrete, until do not have described cushion cap reinforcing bar, thus forms the cushion cap supporting hollow cylinder pier.
Meanwhile, present invention also offers a kind of offshore platform fixing cylinder pier construction method of installation, wherein said cylinder pier is concrete prefabricated hollow cylinder pier, and described method comprises:
Guarantee to fix by least four pile inserted to plays to seabed, thus the stretching out from seabed at least partially of each pile in the marine site of predetermined installation offshore platform, correspondingly fixed support between described pile, makes the position between them fix;
Insert marine until seabed by hollow cylinder pier, wherein said hollow cylinder pier surrounds described pile, and described pile provides the support force of hollow cylinder pier described in a part of temporary support;
Via the bottom perfusion sealing concrete of pressure piping to described hollow cylinder pier, thus form sealing layer of concrete between the bottom and seabed of hollow cylinder pier;
Ponding in described hollow cylinder pier is found time, serves as Temporary Cofferdam;
Blocked by pile in the position that will form cushion cap, broken pile head exposes default reinforcing bar, and at described reinforcing bar place overlap joint cushion cap reinforcing bar; And
Perfusion cushion cap concrete, until do not have described cushion cap reinforcing bar, thus forms the cushion cap supporting hollow cylinder pier.
Adopt above-mentioned technological means of the present invention, hollow cylinder pier can serve as Temporary Cofferdam, eliminates the employing of steel Temporary Cofferdam in prior art, while significantly saving installation cost, also improves the working security of operator.
Preferably, described pile is steel cylinder, and described steel cylinder is inner preferentially can form deposited reinforced concrete pile post by concrete perfusion at cushion cap with hypomere.
Preferably, described pile supports described hollow cylinder pier via the adjustable for height support frock that its end is installed, especially supports the support that described hollow cylinder pier is preset.Before the bottom perfusion sealing concrete to described hollow cylinder pier, described support frock is utilized to finely tune levelness and/or the verticality of described hollow cylinder pier.
Preferably, before the bottom perfusion sealing concrete to described hollow cylinder pier, check the gap between hollow cylinder pier and water-bed or seabed, if excesssive gap, then to the broken sandstone of hollow cylinder pier underfill.
According to technological means of the present invention, sealing layer of concrete not only realizes water stopping function as prior art, simultaneously also can providing unit sub-support function.For this purpose, preferably, it is characterized in that, bar construction is preset with in the bottom of described hollow cylinder pier, during installation described bar construction and described pile contactless, and after pouring into sealing concrete, form described sealing layer of concrete together with described bar construction.
Preferably, the extending radially out from the bottom outer surface of described hollow cylinder pier at least partially of described sealing layer of concrete.
In order to improve the firmness between pile and sealing layer of concrete, preferably, in the expectation of described pile, the periphery, position forming sealing layer of concrete and/or cushion cap is provided with contact surface and increases structure, to increase the contact area of described pile and sealing layer of concrete and/or cushion cap.
Preferably, the contact surface of described pile increases structure is multiple barb structure distributed on the periphery of described pile.
Preferably, the bottom in or seabed water-bed in the insertion of described hollow cylinder pier is installed on support skirtboard, for preventing sedimentation and increasing described hollow cylinder pier at the firmness in water-bed or seabed and keep between skirtboard and seabed contact.
Preferably, described support skirtboard comprises overhanging part, for via the bottom being bolted to described hollow cylinder pier; From the rail portion that the external diameter edge less perpendicular of the described part that overhangs extends; And multiple rib extended between described rail portion and the internal diameter of described overhanging part.
Preferably, described support skirtboard comprises the overhanging part of radially outward stretching out, for via the bottom being bolted to described hollow cylinder pier; And multiple along the circumferential direction equally distributed parts of tooth, described parts of tooth extends towards the direction of insertion of described hollow cylinder pier.
Preferably, described support skirtboard comprises multiple L shape and supports steel disc, and they distribute along the bottom even of described hollow cylinder pier, and each support steel disc comprises the standing part fixed for bolt and the support section with described standing part less perpendicular.
According to a further aspect in the invention, additionally provide and a kind ofly utilize that the boat structure of preceding method installation or ocean platform are fixing uses hollow cylinder pier, described hollow cylinder pier comprises:
Multiple insertion bottom or seabed are until the pile of bearing stratum, and described pile is surrounded by described hollow cylinder pier;
Be positioned at the sealing reinforced concrete floor bottom described hollow cylinder pier; And
Serve as Temporary Cofferdam with described hollow cylinder pier and the reinforced concrete pile cap formed, described cushion cap is for supporting described hollow cylinder pier.
In addition, according to another aspect of the present invention, additionally provide a kind of boat structure or ocean platform construction method of installation, wherein said boat structure or ocean platform comprise the braced structures be made up of one or more hollow cylinder pier and the terrace part be made up of beam slab system, and described method comprises:
Utilize aforesaid method by hollow cylinder pier installation in position; And
Described hollow cylinder pier continues described terrace part is installed.
Adopting technical scheme of the present invention, can building in installation that boat structure or ocean platform are fixing builds Temporary Cofferdam with saving during cylinder pier, greatly save construction cost; Concrete hollow cylinder pier serves as Temporary Cofferdam simultaneously, too increases the safety that operating personnel construct within it.In addition, according to technical scheme of the present invention, sealing layer of concrete is no longer only formed by plain concrete as prior art, but is formed as the sealing layer of concrete of reinforced concrete structure, can also bear the function that a part supports while providing water stopping function.Meanwhile, according to technical scheme of the present invention, bottom hollow cylinder pier, have employed support skirtboard, the possible sedimentation of hollow cylinder pier can be prevented further, add stability.Moreover according to technical scheme of the present invention, pile is provided with the structure increasing contact surface with sealing layer of concrete, and this also further ensure that the fastness of pile.
Accompanying drawing explanation
From detailed description described later and combine below accompanying drawing can comprehend aforementioned and other side of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the installation process of the hollow cylinder pier according to an illustrative examples of the present invention;
Fig. 2 further schematically show the installation process of hollow cylinder pier as shown in Figure 1;
Fig. 3 diagrammatically illustrates the amplification view looked over from the F-F intercepting direction of the hollow cylinder pier of as shown in Figure 1;
Fig. 4 diagrammatically illustrates the amplification view looked over from the G-G intercepting direction of the hollow cylinder pier of as shown in Figure 1;
Fig. 5 diagrammatically illustrates the formation of the cushion cap of the hollow cylinder pier according to illustrative examples of the present invention;
Fig. 6 A diagrammatically illustrates the barb structure on steel cylinder according to an embodiment of the invention;
Fig. 6 B diagrammatically illustrates the sectional view looked over along H-H intercepting direction of steel cylinder as shown in Figure 6A;
Fig. 6 C diagrammatically illustrates barb structure partial enlarged drawing on steel cylinder as shown in Figure 6A; And
Fig. 7 A, 7B, Fig. 8 and 9 diagrammatically illustrate the support skirtboard according to the present invention is directed to involved by three kinds of different weak soil sea beds respectively.
Detailed description of the invention
In each accompanying drawing of the application, the identical or intimate feature of structure is represented by identical Reference numeral.
Only for Fig. 1,2 and 5, schematically but illustrate without limitation according to the fixing cylinder pier of the boat structure of an illustrative examples of the present invention and construction method of installation thereof, can be the aquatic buildings such as lake or the ocean platform such as offshore wind turbine, Offshore Bridges at this boat structure mentioned.The cylinder pier that the present invention discusses is reinforced concrete prefabricated hollow cylinder pier, diameter about about 8 to 10 meters or larger, and technical scheme of the present invention is particluarly suitable for adopting in the waters in the water-bed or seabed of soft foundation or offshore sea waters.
Fig. 1,2 and 5 description in be only described for offshore sea waters, but those skilled in the art know that corresponding technology enlightenment can be applied to any possible waters equally.In addition, construction mentioned in the present invention that it may be noted that all can adopt the existing any suitable offshore engineering boats and ships in this area, the introduction of therefore will omit concrete associated construction method in the description.
First, needing the position, construction marine site adopting hollow cylinder pier, vibratory equipment known in the art is utilized steel cylinder 49 to be vibrated inserted to play in seabed 2.According to the internal diameter of each prefabricated hollow cylinder pier, arrange a such as four or more steel cylinder 49, the inside diameter ranges of the hollow cylinder pier they being positioned at will install.Steel cylinder 49 squeezes into the 2-in-1 suitable depth in seabed, such as can until suitable bearing stratum place.Steel cylinder 49 vertically can be squeezed into or tilt to squeeze into, as long as the position that they expose seabed 2 can make not hinder the hollow cylinder pier that will install easily to be inserted in them.
When these steel cylinders 49 insert seabed in position after, can be relatively fixing by support 119 between two between them, such as can be connected by default bolt between support 119 with steel cylinder 49 or can be fixedly connected with by other suitable method of attachment such as welding.Such as, support 119 can take triangle as shown in the figure, and other any shape is also feasible certainly.
Each steel cylinder 49 surface 1 end on be provided with adjustable for height support frock 113, for carrying the hollow cylinder pier that next step will be installed.Such as, this adjustable for height support frock 113 can realize in the following manner, after steel cylinder 49 being suppressed to the 2-in-1 suitable depth in seabed at the scene, welds steel plate, then on this steel plate, install jack after correspondingly being intercepted the end of surfacing.
For corresponding four steel cylinders 49 of each hollow cylinder pier, after four steel cylinders 49 are all secured in place, utilize buoyancy tank or installation ship to be vertically inserted into marine by the hollow cylinder pier 108 prefabricated on land, the inwall of hollow cylinder pier 108 surrounds these four steel cylinders 49 and does not contact with them simultaneously.For weak soil sea bed, a part for cylinder pier 108 will directly be inserted in sea bed 2 as shown in Figure 1.
As described in Figure 3, near the end of surfacing of hollow cylinder pier 108, criss-cross supporting traverse 112 is provided with.Such as, this criss-cross supporting traverse 112 can be girder steel, can be fixed on the inwall of hollow cylinder pier 108 via any suitable fixed form such as bolt or welding.Install in the process of hollow cylinder pier 108 above, criss-cross supporting traverse 112 can be sat idly in support frock 113, thus hollow cylinder pier 108 can be fine-tuning to suitable degree relative to the levelness on sea level 1 and verticality by the lifting of support frock 113 fine setting.
After this, can check whether have space between the bottom of hollow cylinder pier 108 and sea bed 2 by watch-dog under water.If there is space, can fill from the sandstone of appropriate amount the top of hollow cylinder pier 108.When not had space by the discovery of watch-dog inspection under water or space is little, the sub-bottom utilizing conduit to be passed into hollow cylinder pier 108 has injected concrete thus has formed sealing layer of concrete 43, as shown in Figure 1.Under gravity, a periphery part for sealing layer of concrete 43 radially outward spreads.
Alternatively, as shown in Figure 4, inwall near that end at the insertion bottom of hollow cylinder pier 108 can be provided with embedded bar 45, thus make sealing layer of concrete become reinforced concrete floor from the plain concrete layer of routine, except water stopping function is provided, also play the effect for hollow cylinder pier 108 provides a part to support.After sealing layer of concrete 43 solidifies, also form a fixed connection between steel cylinder 49 and sealing concrete, thus also provide the power that a part supports hollow cylinder pier 108.
So far, the ponding in hollow cylinder pier 108 can be found time by pumping equipment, and hollow cylinder pier 108 serves as the function of Temporary Cofferdam simultaneously.
Then staff is lowered in the inside of hollow cylinder pier 108, and the part cutting of exposing from sealing layer of concrete 41 of steel cylinder 49 gone under dry working environment, broken pile head, exposes default overlap joint reinforcing bar.This cutting position is approximately the position that cushion cap will be formed.Then, as shown in Figure 2, staff overlaps and overlaps reinforcing bar 47 on the service sleeve at the bottom interior wall correct position place of cylinder pier 108, the cushion cap of colligation simultaneously reinforcing bar.After this, above hollow cylinder pier 108, bet concrete to the position flooding reinforcing bar 47 via pipeline, after concrete setting, form cushion cap 44, as shown in Figure 5.
According to above technological means of the present invention, after cushion cap 44 is formed, can withdraw the installation ship of a pier, after this cylinder pier 108 can be erect across the sea independently, thus provides platform construction work to prepare thereon for follow-up.Alternatively, also can not withdraw installation ship, continue to utilize the default reinforcing bar 111 of hollow cylinder pier 108 to adopt known technology that the terrace part be made up of beam slab system of ocean platform is installed.
In the above-described embodiments, described steel cylinder 49 inside preferentially can form deposited reinforced concrete pile post by concrete perfusion at cushion cap 44 with hypomere.
As an alternative, in the inventive solutions, above-mentioned hollow cylinder pier 108 also can be the hollow cylinder pier segmentation be prefabricated in the factory.The cooperative end part of each hollow cylinder pier segmentation is preset with shear connector structure, for the connection between them.Whole cylinder pier can on buoyancy tank or installation ship sectional integral after be lowered into again in water, installation process is thereafter with identical as mentioned above.
Increase bonding strength in order to the contact surface that improves between steel cylinder 49 and cushion cap 44, as shown in Fig. 6 A to 6C, the external surface will building the concrete position of cushion cap such as region 49A of steel cylinder 49 is integrally formed with multiple barb structure 49B.Such as, these barb structure 49B can distribute on the external surface of the region 49A of steel cylinder 49 uniform intervals.
Barb structure 49B is triangle, its minimum acute angle points to the direction in the insertion seabed of steel cylinder 49, thus the too much resistance of unlikely generation in the process in seabed is inserted at steel cylinder 49, and the shape of this barb structure 49B contributes to stoping concrete attached to it to move down along gravity direction, thus further increases the support force relying on cushion cap 44 to provide for hollow cylinder pier 108 compared with the steel cylinder not having this kind of barb structure.Should know that the shape of barb structure 49B is not limited to shape as shown in Figure 6, as long as the concrete contact area with cushion cap can be increased and the contact surface that can not produce too much resistance to the insertion of steel cylinder increases structure all can adopt on the external surface of steel cylinder 49.Such as, as an alternative, also the region 49A of steel cylinder 49 can be provided with integratedly the flange radially outward stretched out at multiple interval, thus increase cushion cap concrete and its contact area.Should be clear, be provided with this contact surface and increase the region 49A of structure and can be arranged on steel cylinder 49 in the scope that contacts with cushion cap and/or sealing layer of concrete.
Technical scheme of the present invention is mainly for the sea bed application implementation of Soft Clay.Usually, the sea bed of this type of Soft Clay is divided three classes: 1) sea bed is Soft Soil Layer, such as, mainly comprise mud; 2) sea bed is sandy soils, such as, mainly comprise sandstone; And 3) sea bed is harder weathered layer, such as, mainly comprise decomposed rock.In order to make hollow cylinder pier 108 can fix more firmly on this three classes weak soil sea bed, the present invention devises different support skirtboards for different weak soil sea beds respectively.
Fig. 7 A and 7B diagrammatically illustrate for the weak soil sea bed based on mud according to support skirtboard 124 of the present invention.Fig. 7 A is the upward view of the support skirtboard 124 be arranged on hollow cylinder pier 108.Can find out in fig. 7, support skirtboard 124 and be substantially annular, its internal diameter is identical with the internal diameter of hollow cylinder pier 108.Support skirtboard 124 and comprise overhanging part 121.This overhanging part 121 radially outward extends over external surface a distance of hollow cylinder pier 108 from inner radius.From the rail portion 122 that the external diameter edge less perpendicular of described overhanging part 121 extends.In order to strengthen support, overhanging part 121 is extended with multiple equally distributed rib 123 integratedly between rail portion 122 and the internal diameter of overhanging part 121.Support skirtboard 124 to be integrally formed by any suitable metals such as steel.
Such as, supporting skirtboard 124 can be prefabricated in the factory in advance, is then fixedly mounted on the end face that will insert the end in seabed of hollow cylinder pier 108 in erecting bed via prefabricated bolt, as shown in Figure 7 B.Like this, with reference to as Figure 1A and 1B introduce hollow cylinder pier 108 is inserted after in sea bed, due to support skirtboard increase the contact area with mud, so decrease possible deflection.In addition, increase too when building sealing concrete and further enhancing the firmness of a pier in seabed with concrete contact area.
The another kind according to the present invention that Fig. 8 diagrammatically illustrates for the weak soil sea bed based on sandstone supports skirtboard.This support skirtboard is also substantially annular, and its internal diameter is roughly the same with the internal diameter of hollow cylinder pier 108.This support skirtboard comprises the overhanging part 141 of radially outward stretching out and along the circumferential direction equally distributed multiple parts of tooth 142, and wherein the tip of each parts of tooth 142 is towards the direction in the insertion seabed of hollow cylinder pier 108.In addition, within each parts of tooth 142 is positioned at the outer ledge of overhanging part 141, the proximate inner edges of annulus is preferably placed at.Support skirtboard to be integrally formed by any suitable metals such as steel.Equally, this support skirtboard also can be fixedly mounted on the end face that will insert the end in seabed of hollow cylinder pier 108 via prefabricated bolt in erecting bed.Like this, even if overhanging part 141 upwarps to some extent in process hollow cylinder pier 108 being inserted sandstone seabed, parts of tooth 142 also can be guaranteed to penetrate more firmly in sea bed.In the embodiment illustrated, each parts of tooth 142 is triangle, but it should be apparent to those skilled in the art that other any suitable shape all can adopt in the parts of tooth of support skirtboard of the present invention, such as semicircle or half elliptic profile of tooth etc.Adopt this support skirtboard increase too when building sealing concrete with concrete contact area further, enhance the firmness of a pier in seabed.
The another kind according to the present invention that Fig. 9 diagrammatically illustrates for the weak soil sea bed based on decomposed rock supports skirtboard.For the feature that decomposed rock is harder, this support skirtboard is made up of multiple support steel disc 131 substantially, such as, can be 64 support steel discs 131.Each support steel disc 131 is substantially L shape, comprises for a standing part in nose face and the support section with described standing part less perpendicular of fitting.As shown in Figure 9, these support steel discs 131 are circumferentially fixedly mounted on the end face that will insert the end in seabed of hollow cylinder pier 108 via bolt with its standing part independently of one another respectively uniform intervals.After installation in position, the standing part of each support steel disc outwards overhangs from cylinder pier radial surface, and support section extends towards cylinder pier direction of insertion.Like this, but each support steel disc can be made by the sea-floor relief height of present position and correspondingly independently to be bent, and the horizontal and vertical degree of holding cylinder pier, also can keep in touch with seabed.Can not because of not contact during lower sealing concrete, the excessive loss concrete in space, have also been obtained further increase with the active area of sealing layer of concrete simultaneously.
Although the cross section of illustrated steel cylinder 49 or hollow cylinder pier 108 is substantially circle, should know that other any suitable shape all can adopt.Such as, the cross section of steel cylinder or even hollow cylinder pier also can be other shape such as triangle, rectangle.
The enforcement of usual ocean platform is realized by steel work, and therefore corrosion mainly appears at the part exposing sea.The present invention adopts concrete prefabricated hollow cylinder pier, and concrete prefabricated hollow cylinder pier can resist seawater effectively for the erosion of exposing sea part, and what effectively improve employing this kind of cylinder pier utilizes the life-span.In addition, according to the hollow cylinder pier of construction and installation of the present invention, avoid and adopt Temporary Cofferdam to construct cushion cap, greatly reduce the manufacturing cost of ocean platform, hollow cylinder pier serves as the safety that Temporary Cofferdam also improves operating personnel within it simultaneously.Therefore, no matter to consider from the viewpoint of financial cost or from personal protection, the construction that technical scheme of the present invention is relevant boat structure, especially ocean platform provides significant benefit.
Although describe particular implementation of the present invention here in detail, the object that they are only used to explain provides, and should not think that they are construed as limiting scope of the present invention.Without departing from the spirit and scope of the present invention, various replacement, change and transformation can be conceived out.

Claims (21)

1. boat structure is fixing by a cylinder pier construction method of installation, and wherein said cylinder pier is concrete prefabricated hollow cylinder pier, and described method comprises:
Guarantee to fix by least four pile inserted to plays to the bottom, thus the stretching out from the bottom at least partially of each pile in the waters of predetermined installation boat structure, correspondingly fixed support between described pile, makes the position between them fix;
Insert hollow cylinder pier until water-bed in water, wherein said hollow cylinder pier surrounds described pile, and described pile provides a part to support the support force of described hollow cylinder pier;
Via the bottom perfusion sealing concrete of pipeline to described hollow cylinder pier, thus form sealing layer of concrete between the bottom and the bottom of hollow cylinder pier;
Ponding in described hollow cylinder pier is found time, serves as Temporary Cofferdam;
Blocked by pile in the position that will form cushion cap, broken pile head exposes default reinforcing bar, and at described reinforcing bar place overlap joint cushion cap reinforcing bar; And
Perfusion cushion cap concrete, until do not have described cushion cap reinforcing bar, thus forms the cushion cap supporting hollow cylinder pier.
2. offshore platform is fixing by a cylinder pier construction method of installation, and wherein said cylinder pier is concrete prefabricated hollow cylinder pier, and described method comprises:
Guarantee to fix by least four pile inserted to plays to seabed, thus the stretching out from seabed at least partially of each pile in the marine site of predetermined installation offshore platform, correspondingly fixed support between described pile, makes the position between them fix;
Insert marine until seabed by hollow cylinder pier, wherein said hollow cylinder pier surrounds described pile, and described pile provides the support force of hollow cylinder pier described in a part of temporary support;
Via the bottom perfusion sealing concrete of pipeline to described hollow cylinder pier, thus form sealing layer of concrete between the bottom and seabed of hollow cylinder pier;
Ponding in described hollow cylinder pier is found time, serves as Temporary Cofferdam;
Blocked by pile in the position that will form cushion cap, broken pile head exposes default reinforcing bar, and at described reinforcing bar place overlap joint cushion cap reinforcing bar; And
Perfusion cushion cap concrete, until do not have described cushion cap reinforcing bar, thus forms the cushion cap supporting hollow cylinder pier.
3. method according to claim 1 and 2, is characterized in that, described pile is steel cylinder, and described steel cylinder is inner preferentially can form deposited reinforced concrete pile post by concrete perfusion at cushion cap with hypomere.
4. according to the arbitrary described method of aforementioned claim, it is characterized in that, described pile supports described hollow cylinder pier via the adjustable for height support frock that its end is installed, especially supports the support that described hollow cylinder pier is preset.
5. method according to claim 4, is characterized in that, before the bottom perfusion sealing concrete to described hollow cylinder pier, utilizes described support frock to finely tune levelness and/or the verticality of described hollow cylinder pier.
6. according to the arbitrary described method of aforementioned claim, it is characterized in that, before the bottom perfusion sealing concrete to described hollow cylinder pier, check the gap between hollow cylinder pier and water-bed or seabed, if excesssive gap, then to the broken sandstone of hollow cylinder pier underfill.
7. according to the arbitrary described method of aforementioned claim, it is characterized in that, be preset with bar construction in the bottom of described hollow cylinder pier, during installation described bar construction and described pile contactless, and after pouring into sealing concrete, form described sealing layer of concrete together with described bar construction.
8., according to the arbitrary described method of aforementioned claim, it is characterized in that, extending radially out from the bottom outer surface of described hollow cylinder pier at least partially of described sealing layer of concrete.
9. according to the arbitrary described method of aforementioned claim, it is characterized in that, in the expectation of described pile, the periphery, position forming sealing layer of concrete and/or cushion cap is provided with contact surface and increases structure, to increase the contact area of described pile and sealing layer of concrete and/or cushion cap.
10. method according to claim 9, is characterized in that, it is multiple barb structure distributed on the periphery of described pile that the contact surface of described pile increases structure.
11., according to the arbitrary described method of aforementioned claim, is characterized in that, the insertion bottom of described hollow cylinder pier or the bottom in seabed are installed on support skirtboard, for preventing sedimentation and increasing described hollow cylinder pier at firmness that is water-bed or seabed.
12. methods according to claim 11, is characterized in that, described support skirtboard comprises overhanging part, for via the bottom being bolted to described hollow cylinder pier; From the rail portion that the external diameter edge less perpendicular of the described part that overhangs extends; And multiple rib extended between described rail portion and the internal diameter of described overhanging part.
13. methods according to claim 11, is characterized in that, described support skirtboard comprises the overhanging part of radially outward stretching out, for via the bottom being bolted to described hollow cylinder pier; And multiple along the circumferential direction equally distributed parts of tooth, described parts of tooth extends towards the direction of insertion of described hollow cylinder pier.
14. methods according to claim 11, it is characterized in that, described support skirtboard comprises multiple L shape and supports steel disc, they distribute along the bottom even of described hollow cylinder pier, and each support steel disc comprises the standing part fixed for bolt and the support section with described standing part less perpendicular.
15. 1 kinds utilize the boat structure of the arbitrary described method installation of aforementioned claim or ocean platform is fixing uses hollow cylinder pier, and described hollow cylinder pier comprises:
Multiple insertion bottom or seabed are until the pile of bearing stratum, and described pile is surrounded by described hollow cylinder pier;
Be positioned at the sealing reinforced concrete floor bottom described hollow cylinder pier; And
Serve as Temporary Cofferdam with described hollow cylinder pier and the reinforced concrete pile cap formed, described cushion cap is for supporting described hollow cylinder pier.
16. hollow cylinder piers according to claim 15, is characterized in that, described pile is steel cylinder.
17. hollow cylinder piers according to claim 15 or 16, is characterized in that, extending radially out from the bottom outer surface of described hollow cylinder pier at least partially of described sealing layer of concrete.
18. according to claim 15 to 17 arbitrary described hollow cylinder piers, it is characterized in that, being provided with contact surface with the periphery, position of sealing layer of concrete and/or raft contact and increasing structure, to increase the contact area of described pile and sealing layer of concrete and/or cushion cap at described pile.
19. hollow cylinder piers according to claim 18, is characterized in that, it is multiple barb structure distributed on the periphery of described pile that the contact surface of described pile increases structure.
20. according to claim 15 to 19 arbitrary described hollow cylinder piers, it is characterized in that, the bottom in or seabed water-bed in the insertion of described hollow cylinder pier is installed on support skirtboard, for preventing sedimentation and increasing described hollow cylinder pier at the firmness in water-bed or seabed and keep between skirtboard and seabed contact.
21. 1 kinds of boat structures or ocean platform construction method of installation, wherein said boat structure or ocean platform comprise the braced structures be made up of one or more hollow cylinder pier and the terrace part be made up of beam slab system, and described method comprises:
Utilize the arbitrary described method of claim 1 to 14 by hollow cylinder pier installation in position; And
Described hollow cylinder pier continues described terrace part is installed.
CN201410018362.3A 2014-01-15 2014-01-15 Cylindrical pier for fixing water structure and mounting and constructing method of cylindrical pier CN104775446A (en)

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CN201410018362.3A CN104775446A (en) 2014-01-15 2014-01-15 Cylindrical pier for fixing water structure and mounting and constructing method of cylindrical pier
US15/111,889 US20160340852A1 (en) 2014-01-15 2015-01-14 Construction method for fixing hollow column for supporting marine structures and offshore platforms to a seabed
SG11201605777XA SG11201605777XA (en) 2014-01-15 2015-01-14 Construction method for fixing hollow column for supporting marine structures and offshore platforms to a seabed
PCT/CN2015/070659 WO2015106679A1 (en) 2014-01-15 2015-01-14 Construction method for fixing hollow column for supporting marine structures and offshore platforms to a seabed
EP15737412.5A EP3094788A4 (en) 2014-01-15 2015-01-14 Construction method for fixing hollow column for supporting marine structures and offshore platforms to a seabed
JP2016564370A JP2017503101A (en) 2014-01-15 2015-01-14 Water structure fixing roll and its construction method
HK16100403.3A HK1212404A1 (en) 2014-01-15 2016-01-14 Cylindrical pier for fixing water structure and mounting and constructing method of cylindrical pier
PH12016501403A PH12016501403A1 (en) 2014-01-15 2016-07-15 Construction method for fixing hollow column for supporting marine sturctures and offshore platforms to a seabed

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HK1212404A1 (en) 2016-06-10
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PH12016501403A1 (en) 2016-08-31
EP3094788A4 (en) 2017-08-16
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EP3094788A1 (en) 2016-11-23
US20160340852A1 (en) 2016-11-24

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