CN102817357A - Load-bearing foundation piles for offshore large wind driven generators and towers and construction method of load-bearing foundation piles - Google Patents
Load-bearing foundation piles for offshore large wind driven generators and towers and construction method of load-bearing foundation piles Download PDFInfo
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- CN102817357A CN102817357A CN2011101548024A CN201110154802A CN102817357A CN 102817357 A CN102817357 A CN 102817357A CN 2011101548024 A CN2011101548024 A CN 2011101548024A CN 201110154802 A CN201110154802 A CN 201110154802A CN 102817357 A CN102817357 A CN 102817357A
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Abstract
Disclosed are load-bearing foundation piles for offshore large wind driven generators and towers, and a construction method of the load-bearing foundation piles. Each load-bearing foundation pile comprises a main pile, branch piles and inner piles. Branch pile holes inclining down are symmetrically distributed on the corresponding side wall of the tubular main pile with the conical top end from bottom to top. The branch pile holes on the adjacent side walls are equal in spacing. Tail ends of the branch piles in the symmetric branch pile holes gather to form V-shaped wedge grooves in a central hole of the tubular main pile. The wedge-topped inner piles, which match with a tubular hollow of the main pile and the V-shaped wedge grooves formed by the gathering tail ends of the branch piles, are disposed on the brach piles with the gathering V-shaped grooves in the central hole of the main pile. The tail ends of the inner piles are V-shaped wedge grooves. The V-shaped wedge grooves at the tail ends of the inner piles match with the wedged top ends of the inner piles, on the side adjacent to the inner piles, on the upper branch piles. The construction method includes presetting the branch piles, driving the tubular main pile of the inner piles connected with the tubular main pile with the conical top end through a connector into ground, driving push rods matching with pipe holes in aperture into the pipe holes of the main pile, and pressing down the push rods to allow the wedged top ends of the inner piles to extend out of the outer side walls of the grounded main pile. The load-bearing piles and the construction method have the advantages that bearing capacity of the foundation piles is increased greatly, structure is simple, and the foundation files are convenient to popularize and apply.
Description
Technical field
The present invention relates to a kind of the load-bearing foundation pile that is used for marine large-scale wind driven generator and pylon, especially load-bearing foundation pile and go into foundation pile pile body side behind the ground, overhanging a plurality of stakes go into ground branch bearing peg and job practices thereof.
Background technology
Large-scale Wind Turbines; Powerful blower fan group such as 3.6MW; Only the unit weight of generator adds three huge paddles and supports the towering pylon of large-scale wind driven generator just more than 300 ton, and the weight of whole Large-scale Wind Turbines is more than 500 tons.These weight are all carried by several square metres of areas of pylon bottom; So the load-bearing foundation pile of Large-scale Wind Turbines will carry very large overweight blower fan and pylon; Just must strengthen the quantity of going into the ground degree of depth or increase foundation pile of foundation pile; In the hope of the support of the enough big frictional force of the support that obtains batholith or pile body top layer and basal layer, the load-bearing foundation pile of marine large-scale wind driven generator and pylon is except the gravity that will carry vertical direction, in the time of also will carrying the wind-driven generator duty; The wind-force of horizontal direction passes to the lateral force of load-bearing foundation pile through generator, pylon.When this lateral force was worked owing to blower fan, seasonal wind direction changed, and the lateral force of generation is that 360 degree are comprehensive variable.Marine large-scale wind driven generator addressing generally will be considered wind energy grade, transportation installation, maintenance maintenance, the transmission of electricity transformation each economic target balance of wind field.Mostly be chosen in five kilometers on bank off sea with interior inshore, and the sanidal sea bed in inshore seabed basically all to be the silt alluvial form, supporting capacity is limited; Sea bed silt sediment deposit thickness can reach several one hundred meter; Select foundation pile to arrive at the batholith layer by the batholith load-bearing, this very uneconomical difficulty of construction is also very big, by the load-bearing basic norm of routine; Marine large-scale wind driven generator and pylon are the bearing platform supportings that is held up by a plurality of pile bodies of squeezing into the seabed.The frictional force that this bearing platform will have abundant stake and silt sediment deposit to produce is carried the gravity of vertical direction, also will have enough big area to carry lateral force.So the load-bearing foundation pile of marine large-scale wind driven generator and pylon is in wind power generating set is built, no matter be that duration or cost institute accounting part are all very big.
Summary of the invention
Technical problem to be solved by this invention is exactly in order to overcome the defective that above-mentioned prior art exists, and a kind of load-bearing foundation pile and job practices thereof that can increase substantially the marine large-scale wind driven generator and the pylon of bearing capacity is provided.
The present invention can realize through following technical scheme down.The load-bearing foundation pile of marine large-scale wind driven generator and pylon comprises king pile, branch stake and interior stake; On the corresponding sidewall of the tubulose king pile of apex cone point, the branch stake hole of the symmetry that distributes from bottom to top, branch stake hole is tilted to down; The branch stake hole equidistance of adjacent wall; In the branch stake hole of symmetry, put tail end and in tubulose king pile mesopore, close up the branch stake of carving groove for V-arrangement, the V-type of closing up in the king pile mesopore is carved in the branch stake of groove; That puts that the V-arrangement that closes up with branch stake tail end carves that groove and king pile cannulated match carves interior of shape top; An interior stake tail end is that V-arrangement is carved groove, and the V-arrangement of interior stake tail end is carved groove and adjacent side, and the interior stake in the last stake is carved the shape top and matched.Described king pile is that the segmentation of tubulose pile body connects; The tubulose pile body pipe wall thickness of described king pile is the 1/2=1/4 of tubulose pile body radius; Described tubulose king pile cross section is square; Described branch stake top is the single face tooth shape; Described branch stake center line and king pile center line angle are acute angle.
The load-bearing foundation pile of marine large-scale wind driven generator of the present invention and pylon after twice piling of needs, just can reach pile body and go into the ground branch, increases substantially the purpose of bearing capacity.
The job practices of the load-bearing foundation pile of marine large-scale wind driven generator and pylon; A.; In the branch stake hole of the tubulose king pile sidewall of apex cone point the branch stake is set, the V-type that branch stake tail end closes up is carved on the groove, puts the interior stake that top wedge, tail end are carved groove; The seabed sea bed is squeezed in the tubulose king pile location of apex cone point; The branch stake is set in the branch stake hole of the tubulose king pile sidewall of segmentation manufacturing, and the V-type that branch stake tail end closes up is carved on the groove, puts the branch stake that top wedge, tail end are carved groove; The tubulose king pile of preset branch stake, interior stake is connected with the tubulose king pile of going into ground apex cone point with connector; Continue to squeeze into the seabed, repetition tubulose king pile is connected to king pile and reaches desired depth, B; In the king pile pore, squeeze into the push rod that coincide with king pile pore aperture, the king pile lateral wall was stretched out in the stake of stake wedge top pushing branch in push rod pressed down and makes.
The load-bearing foundation pile of marine large-scale wind driven generator and pylon in the selected position that wind power generating set is installed, will be squeezed into the seabed with the king pile of awl point with piling machine; The interior configuration of a king pile stake, interior stake owing to the king pile length that need squeeze into the seabed is very long, is convenient manufacturing, transportation, installs, construct; The tubulose pile body of king pile is segmentation manufacturing and configuration branch stake, interior stake, and after the king pile location of band awl point was squeezed into, the tubulose king pile was connected with the king pile concentricity of band awl point on the water; Continuation is squeezed into the seabed with piling machine with pile body, reaches projected depth until the pile body of continuous connection, in the hiding king pile of branch stake this moment; In the [of tubulose king pile, squeeze into the push rod that matches with king pile pore bore, the interior stake in the tubulose king pile pore is under the downward pushing of push rod, and interior stake is carved the shape top and tail end is closed up for the branch stake of V-shaped groove released to both sides; Stretch out king pile and survey wall outward, interior stake continues another side of pushing downwards under the downward pushing of push rod; It is the interior stake on the V-shaped groove that next stake tail end closes up, and a stake of another side is released to both sides, stretches out king pile and surveys wall outward; Push rod downwards all pushes out king pile with the branch stake of disposing in the tubulose king pile step by step and surveys wall outward, makes king pile sidewall behind the ground stretch out the branch stake of many group symmetries, the surface area of branch stake having increased load-bearing foundation pile and the area of carrying normal pressure outward; Can make the load-bearing foundation pile increase substantially bearing capacity; Thereby under equal load-up condition, compare with traditional load-bearing foundation pile, that can reduce the quantity of foundation pile significantly or reduce foundation pile goes into the ground degree of depth.
The load-bearing foundation pile of marine large-scale wind driven generator of the present invention and pylon; Building on weak soil layer and sea bed, riverbed; Also can obtain the alternate application of popularity such as the load-bearing foundation pile of house, iron tower, offshore platform, overhead speedway, bridge, harbour; The architecture construction duration on weak soil layer and sea, the riverbed is shortened, and the underground foundation cost reduces significantly.
The load-bearing foundation pile and the job practices thereof of marine large-scale wind driven generator of the present invention and pylon, except marine large fan, the supporting body that other are different is all within protection scope of the present invention.
Compared with prior art, the present invention has the following advantages.
After load-bearing foundation pile king pile is driven underground; On the king pile sidewall, squeeze the branch stake of stretching out behind the pile after driving; Reduce pressure and increase pile body surface to amass the frictional force that improves the load-bearing foundation pile except increasing bearing area; Also, basal layer is improved to the friction factor on pile body top layer, can improve the bearing capacity of load-bearing foundation pile greatly because the extruding of branch stake to basal layer arranged.
Simple in structure, easily manufactured, load-bearing foundation pile king pile and traditional foundation pile are as good as, and the piling mode is constant, and construction machinery is identical, and is easy to utilize.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the side-looking structural representation of Fig. 1
Fig. 3 goes into the structural representation of ground behind the branch for Fig. 1
Fig. 4 goes into the structural representation of ground behind the branch for Fig. 2
The specific embodiment
Combine embodiment that the present invention is described further with reference to the accompanying drawings.
Load-bearing foundation pile like Fig. 1, marine large-scale wind driven generator shown in Figure 2 and pylon is prefabricated the forming of concrete tubulose stake of skeleton by the sharp reinforcing bar of steel awl, is convenient manufacturing, transportation and on-the-spot installation, and the pile body of tubular sections is pressed the ability of vehicle and construction machinery; The standardization segmentation is made, and the prefabricated connector in tubulose stake two ends that segmentation is made is convenient to the job site and the tubulose stake of segmentation is connected into integral body piecemeal with the sharp king pile of steel awl is squeezed into the seabed in the piling process; The load-bearing foundation pile of marine large-scale wind driven generator and pylon comprises king pile 1, branch stake 2, interior stake 3, and king pile is with the concrete member of steel awl point and cage of reinforcement; Mould is built maintenance and is formed, and inlays the branch stake of steel tooth shape top, beveled tail end, the wedge top, carves the interior stake 3 concrete members of flute profile tail end; Build maintenance by mould and form, branch stake hole 4 is set on the king pile two corresponding sidewalls, the center line in branch stake hole and the angle of king pile center line are less than 90 degree; Branch stake hole 4 equidistance of king pile 1 adjacent wall; Inlay steel tooth shape top, the branch stake 2 of beveled tail end places in the branch stake hole, and the top of branch stake is hidden in the branch stake hole; The beveled tail end of two stakes on the corresponding sidewall; In the king pile [, close up for V-arrangement and carve groove, carve on the groove, put the interior stake 3 that top wedge, tail end are carved flute profile at the V-arrangement that branch stake tail end closes up; Carving in groove and the king pile pore of interior stake tail end; Interior wedge top in the last stake matches, and the branch stake hole of the corresponding sidewall of band sharp king pile of awl and tubulose king pile is provided with by said procedure in advance, and presets connector in the end of pile body.The sharp king pile of band awl is squeezed at desired location during piling; The tubulose king pile connects piecemeal to be squeezed into to presetting the degree of depth, in the king pile pore of going into ground, squeezes into the push rod that matches with king pile pore aperture; Stake in push rod pushes in the king pile pore; In the V-arrangement that closes up of the wedge top pushing branch stake tail end of stake carve on the groove, make branch stake on the corresponding sidewall at the underground king pile lateral wall that is pushed out, push rod pushes from top to bottom; The branch stake of hiding in the branch stake hole on the king pile is stretched out on the king pile of going into ground from top to bottom one by one, accomplishes the load-bearing foundation pile construction of marine large-scale wind driven generator and pylon.
Claims (6)
1. the load-bearing foundation pile and the job practices thereof of marine large-scale wind driven generator and pylon comprise king pile, branch stake and interior stake; It is characterized in that; , on the corresponding sidewall of the tubulose king pile of apex cone point, the branch stake hole of the symmetry that distributes from bottom to top; Branch stake hole is tilted to down, and the branch stake hole equidistance of adjacent wall is in the branch stake hole of symmetry; Put tail end and in tubulose king pile mesopore, close up the branch stake of carving groove for V-arrangement; The V-type of closing up in the king pile mesopore is carved in the branch stake of groove, and that puts that the V-arrangement that closes up with branch stake tail end carves that groove and king pile cannulated match carves interior of shape top, and interior tail end is that V-arrangement is carved groove; The V-arrangement of interior stake tail end is carved groove and adjacent side, and the interior stake in the last stake is carved the shape top and matched.
2. the load-bearing foundation pile and the job practices thereof of marine large-scale wind driven generator as claimed in claim 1 and pylon is characterized in that; The tubulose pile body pipe wall thickness of described king pile is the 1/2=1/4 of tubulose pile body radius.
3. the load-bearing foundation pile and the job practices thereof of marine large-scale wind driven generator as claimed in claim 1 and pylon is characterized in that; Described king pile is that the segmentation of tubulose pile body connects.
4. the load-bearing foundation pile and the job practices thereof of marine large-scale wind driven generator as claimed in claim 1 and pylon is characterized in that; Described branch stake top is the single face tooth shape.
5. the load-bearing foundation pile and the job practices thereof of marine large-scale wind driven generator as claimed in claim 1 and pylon is characterized in that; Described branch stake center line and king pile center line angle are acute angle
6. like the load-bearing foundation pile and the job practices thereof of claim 1,2,3,4,5 described marine large-scale wind driven generators and pylon, it is characterized in that; The job practices of the load-bearing foundation pile of marine large-scale wind driven generator and pylon does; A.; The branch stake is set in the branch stake hole of king pile sidewall, and the V-type that branch stake tail end closes up is carved on the groove, puts the interior stake that top wedge, tail end are carved groove; The seabed sea bed is squeezed in the tubulose king pile location of apex cone point; The branch stake is set in the branch stake hole of the tubulose king pile sidewall of segmentation manufacturing, and the V-type that branch stake tail end closes up is carved on the groove, puts the branch stake that top wedge, tail end are carved groove; The tubulose king pile of preset branch stake, interior stake is connected with the tubulose king pile of connector with the apex cone point; Continue to squeeze into the seabed, repetition tubulose king pile is connected to king pile and reaches desired depth, B; In the king pile pore, squeeze into the push rod that coincide with the pore aperture, the king pile lateral wall was stretched out in the stake of stake wedge top pushing branch in push rod pressed down and makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101548024A CN102817357A (en) | 2011-06-10 | 2011-06-10 | Load-bearing foundation piles for offshore large wind driven generators and towers and construction method of load-bearing foundation piles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101548024A CN102817357A (en) | 2011-06-10 | 2011-06-10 | Load-bearing foundation piles for offshore large wind driven generators and towers and construction method of load-bearing foundation piles |
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| CN102817357A true CN102817357A (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101548024A Pending CN102817357A (en) | 2011-06-10 | 2011-06-10 | Load-bearing foundation piles for offshore large wind driven generators and towers and construction method of load-bearing foundation piles |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256790A (en) * | 2015-11-10 | 2016-01-20 | 浙江大学 | Prefabricated skirt type pipe pile used for drainage and added with pile body inclined support and construction method thereof |
| CN105839617A (en) * | 2016-05-25 | 2016-08-10 | 浙江乔兴建设集团有限公司 | High-stability building pile |
| CN110409428A (en) * | 2019-07-01 | 2019-11-05 | 东莞市建安集团有限公司 | Tube pile structure and its construction method |
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| JPS5996327A (en) * | 1982-11-24 | 1984-06-02 | 高 金星 | Foundation stake with support branch |
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| CN201214786Y (en) * | 2008-06-19 | 2009-04-01 | 陆荣虎 | Tree root type multi-support pile |
| CN202117050U (en) * | 2011-06-10 | 2012-01-18 | 上海万德风力发电股份有限公司 | Bearing foundation pile for marine large wind power generator and tower |
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| US1443306A (en) * | 1919-08-05 | 1923-01-23 | Blumenthal Maurice | Means for and method of producing concrete piles |
| DE2436093A1 (en) * | 1974-07-24 | 1976-02-12 | Mannesmann Roehren Werke Ag | BUMP POST WITH ADAPTABLE SPREADERS |
| JPS5774424A (en) * | 1980-10-27 | 1982-05-10 | N I T:Kk | Steel frame for foundation ground insertion |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105256790A (en) * | 2015-11-10 | 2016-01-20 | 浙江大学 | Prefabricated skirt type pipe pile used for drainage and added with pile body inclined support and construction method thereof |
| CN105839617A (en) * | 2016-05-25 | 2016-08-10 | 浙江乔兴建设集团有限公司 | High-stability building pile |
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| CN110409428A (en) * | 2019-07-01 | 2019-11-05 | 东莞市建安集团有限公司 | Tube pile structure and its construction method |
| CN110409428B (en) * | 2019-07-01 | 2021-04-27 | 东莞市建安集团有限公司 | Tubular pile structure and construction method thereof |
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Application publication date: 20121212 |