CN106120879A - Marine wind electric field fan single-pile foundation test pile supporting construction with cantilever design and construction method thereof - Google Patents
Marine wind electric field fan single-pile foundation test pile supporting construction with cantilever design and construction method thereof Download PDFInfo
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- CN106120879A CN106120879A CN201610719809.9A CN201610719809A CN106120879A CN 106120879 A CN106120879 A CN 106120879A CN 201610719809 A CN201610719809 A CN 201610719809A CN 106120879 A CN106120879 A CN 106120879A
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- pile
- test pile
- longeron
- cantilever beam
- electric field
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The present invention provides the marine wind electric field fan single-pile foundation test pile supporting construction of a kind of band cantilever design, and including being inserted vertically into the test pile in seabed respectively and supporting stake, described support stake is provided with at least one, and described support stake is arranged over a longeron；Also including a cantilever beam, the first end of described cantilever beam is connected with the top of described test pile, and the second end is positioned at the top of described longeron, is provided with jacking apparatus between described cantilever beam and described longeron.The present invention also provides for the construction method of the marine wind electric field fan single-pile foundation test pile supporting construction of band cantilever design.The present invention is different from traditional pile testing method, is achieved to the single-pile foundation big overturning moment of applying by cantilever beam and vertical loading.Providing method for offshore wind farm single-pile foundation test pile, test pile Stress property agrees with single-pile foundation working property.
Description
Technical field
The present invention relates to a kind of wind electric field blower single-pile foundation test pile supporting construction, particularly relate to a kind of band cantilever design
Marine wind electric field fan single-pile foundation test pile supporting construction and construction method.
Background technology
Nowadays the energy crisis in the whole world is increasingly severe, and especially as coal and the oil of main energy sources, not only resource has
Limit, non-renewable, but also environment can be caused severe contamination.Greenhouse effect, global warming in recent years has become the whole world and has attracted attention
Environmental crisis, therefore, cleaning green energy resource necessarily becomes future trend, and wind energy is exactly one of them.China is vast in territory,
Seashore line length, offshore wind energy resource is the abundantest.Marine wind electric field have wind speed generating dutation length big, effective, be not take up land,
The advantages such as distance load center is near, having well can DEVELOPMENT PROSPECT.
Single-pile foundation is the topmost foundation pattern of offshore wind farm.In Europe, single-pile foundation accounting reaches more than 70%.?
Domestic single-pile foundation proportion the most constantly promotes.The steel-pipe pile diameter of single-pile foundation is generally between 4～7m.Single-pile foundation by
Single steel-pipe pile is constituted, and steel-pipe pile is arranged on the place of 30～60m under sea bed.Single-pile foundation because low cost, easy construction and
It is applied widely abroad.
But, for single-pile foundation, practice is walked far away in theoretical front.The theory of large-diameter pile and tradition pile foundation
There is larger difference.In the urgent need to updating theory of pile foundation to adapt to the development of large diameter single pile foundation.And the development need of theory
The support of measured data.There is not yet the example directly using large-diameter pile test pile at present both at home and abroad.The most traditional test pile side
Method has vertical bearing capacity test and horizontal bearing capacity to test.Vertical bearing capacity test is primarily subjected to vertical pressure or pull out force effect,
Test bearing capacity of pile foundation or pile foundation layering collateral resistance.Horizontal bearing capacity is primarily subjected to horizontal force action, main test pile body displacement
Relation with laterral earth resistance on piles.Although horizontal test pile also produces certain moment of flexure, but owing to operation on the sea is difficult to provide bigger
Horizontal resist forces, it is provided that moment of flexure numerical finite.And blower foundation especially large-diameter pile basis is primarily subjected to topple greatly curved
Square effect, the moment of flexure that its moment of flexure numerical value produces much larger than common horizontal test pile.The pile foundation bearing characters of both test methods
There is larger difference in the big overturning moment bearing characters born with single-pile foundation.
Summary of the invention
The shortcoming of prior art in view of the above, first technical problem that the invention solves the problems that is to provide a kind of band
The marine wind electric field fan single-pile foundation test pile supporting construction of cantilever design, it is possible to realize single-pile foundation is loaded big overturning moment
Carry out test pile.
For achieving the above object and other relevant purposes, the present invention provides the marine wind electric field fan of a kind of band cantilever design
Single-pile foundation test pile supporting construction, including being inserted vertically into the test pile in seabed respectively and supporting stake, described support stake is provided with at least
One, described support stake is arranged over a longeron；Also include a cantilever beam, the first end of described cantilever beam and described test pile
Top is connected, and the second end is positioned at the top of described longeron, and described longeron is provided with jacking apparatus, and described jacking apparatus is positioned at institute
State between cantilever beam and described longeron.
Preferably, described support stake is provided with two or many, and all of described support stake is arranged side by side, and respectively with described
Longeron is connected.
Preferably, described jacking apparatus is jack.
Preferably, described cantilever beam passes through welding or Flange joint at the top of described test pile.
Second technical problem that the invention solves the problems that is to provide the marine wind electric field fan single pile base of band cantilever design
The construction method of plinth test pile supporting construction, comprises the steps: to use pile hammer to carry out test pile piling construction so that described examination
Test stake and be inserted vertically into seabed；Pile hammer is used to be supported sunk pile construction so that described support stake is inserted vertically into seabed；Propping up
The top of support stake sets up longeron so that supports stake and is connected with longeron；Set up cantilever beam so that one end of cantilever beam is fixing to be connected
At the top of described test pile, the other end is positioned at the top of described longeron；Top is placed between described cantilever beam and described longeron
Rise device.
Preferably, when supporting stake and being provided with two or more, successively different support stakes is carried out piling construction, and make it
It is arranged side by side, until all of support stake completes piling construction.
Preferably, successively different support stakes is connected with longeron, until all of support stake is connected with longeron.
As it has been described above, the marine wind electric field fan single-pile foundation test pile supporting construction of the band cantilever design that the present invention relates to and
Its construction method, has the advantages that use the inventive method carries out single-pile foundation test pile, can overcome tradition test pile side
The limitation of method, is vertically loaded by the one end at cantilever beam, it is achieved that apply big overturning moment and single-pile foundation is carried out test pile also
Measure pile foundation level displacement and the relation of earth resistance, make single-pile foundation test pile more fit the bearing characters of single-pile foundation.The present invention
It is particularly suited for shallow overburden area test pile.Being in pressured state owing to supporting stake, supporting stake bottom support can at basal surfaces
To provide the counter-force being far longer than conventional levels test pile, thus in opposite side greatly incline similar with blower foundation of offer of cantilever beam
Cover moment of flexure.
Accompanying drawing explanation
The test pile supporting construction schematic diagram of the marine wind electric field fan single-pile foundation of Fig. 1 band of the present invention cantilever design.
Fig. 2 is the top view of Fig. 1.
Element numbers explanation
1 test pile
2 support stake
3 longerons
4 cantilever beams
5 jacking apparatus
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to coordinate description to be taken off
The content shown, understands for those skilled in the art and reads, being not limited to the enforceable qualifications of the present invention, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, do not affecting the present invention
Under the effect that can be generated by and the purpose that can reach, all should still fall the scope that can contain at disclosed technology contents
In.Meanwhile, in this specification cited as " on ", D score, "left", "right", the term of " middle " etc., be merely convenient to describe
Understand, and be not used to limit the enforceable scope of the present invention, being altered or modified of its relativeness, without essence change technology
Inside hold, when being also considered as the enforceable category of the present invention.
Tradition single pile the most all uses pile hammer to sink to soil layer, for the coastal large area shallow overburden ground that exists, tradition
Single-pile foundation test pile method by bigger restriction.As depicted in figs. 1 and 2, the present invention provides a kind of band cantilever design
Marine wind electric field fan single-pile foundation test pile supporting construction, is particularly suited for shallow overburden area test pile, including the most vertically inserting
Entering the test pile 1 in seabed and support stake 2, described support stake 2 is provided with one, two or many, and described support stake 2 is arranged over
One longeron 3；Also including a cantilever beam 4, described cantilever beam 4 is the beam of lateral arrangement, and the first end 41 of described cantilever beam 4 is with described
The top of test pile 1 is connected, and the second end 42 is positioned at the top of described longeron 3, and described longeron 3 is provided with jacking apparatus 5, described
Jacking apparatus 5 is between described cantilever beam 4 and described longeron 3, and described jacking apparatus 5 provides thrust upwards to cantilever beam 4,
Described support stake 2 provides vertical counteracting force to cantilever beam 4, makes support stake 2 be in pressured state when testing.The present invention is led to
Crossing jacking apparatus 5 and upwards provide thrust, described cantilever beam 4, by active force upwards, connects owing to one end of cantilever beam 4 is fixing
At the top of described test pile 1, it is achieved thereby that jacking apparatus 5 provides moment of flexure by cantilever beam 4 to test pile 1.The present invention is led to
The method crossing vertical loading achieves the function of horizontal bearing capacity test, it is achieved that single-pile foundation is applied big overturning moment.
As depicted in figs. 1 and 2, when described support stake 2 is provided with one, described support stake 2 is positioned at the of described cantilever beam 4
Immediately below two ends 42, when described support stake 2 is provided with even number root, described support stake 2 is symmetrically distributed in the two of described cantilever beam 4
Side, when described support stake 2 is provided with odd number root, wherein a support stake 2 is positioned at immediately below the second end 42 of described cantilever beam 4,
Remaining all of described support stake 2 is symmetrically distributed in the both sides of described cantilever beam 4, can basis when described support stake 2 is provided with many
Practical situation is arranged, and when described support stake 2 is provided with more than one, all of described support stake 2 is arranged side by side, and respectively with
Described longeron 3 is connected, and uses two or many to support stakes 2 and test pile can be made more to fit the working property of single-pile foundation.Preferably
Ground, the other end of described cantilever beam 4 is positioned at the surface in described longeron 3 centre position.Preferably, described jacking apparatus 5 is thousand
Jin top.Preferably, described cantilever beam 4 at the top of described test pile 1, makes described cantilever beam 4 He by welding or Flange joint
Described test pile 1 connects more reliable.
As depicted in figs. 1 and 2, the present invention also provides for the marine wind electric field fan single-pile foundation test pile support of band cantilever design
The construction method of structure, comprises the steps:
S1, use pile hammer carry out test pile 1 piling construction so that described test pile 1 is inserted vertically into seabed；
S2, use pile hammer are supported stake 2 piling construction so that described support stake 2 is inserted vertically into seabed；
S3, set up longeron 3 above stake 2 supporting so that support stake 2 and be connected with longeron 3；
S4, erection cantilever beam 4 so that one end of cantilever beam 4 is fixedly connected on the top of described test pile 1, other end position
Top in described longeron 3；
S5, between described cantilever beam 4 and described longeron 3 place jacking apparatus 5.
Preferably, in step S2, when supporting stake 2 and being provided with two or more, successively different support stakes 2 is carried out pile sinking
Construction, and make it be arranged side by side, until all of support stake 2 completes piling construction.Preferably, in step S3, successively by difference
Support stake 2 be connected with longeron 3, until all of support stake 2 is connected with longeron 3.
The embodiment of a kind of pile testing method of the present invention presented below:
S1, startup jacking apparatus 5, carry out repeated loading to cantilever beam 4, and each loading force is identical, records simultaneously and adds every time
The pile body corner of test pile 1 and pile strain amount during load, until it reaches the ultimate bending moment of test pile 1, maintain jacking apparatus 5
Oil pressure.As a example by the ultimate bending moment transmitted by test pile 1 top is for 160000kN m, by 16m cantilever beam 4, test pile 1 is carried out
Load, then need to provide the vertical force of 10000kN, the loading force of cantilever beam can be put down by jacking apparatus 5 in the present embodiment
Being divided into 10 loadings, often step loads 1000kN.
S2, jacking apparatus 5 is unloaded, the loading force of cantilever beam is equally divided into by jacking apparatus 5 and repeatedly unloads, with
The pile body corner of test pile 1 and pile strain amount in each uninstall process of Shi Jilu, until the loading that jacking apparatus 5 is to cantilever beam
Power unloads completely, closes jacking apparatus 5, to the loading force of cantilever beam, jacking apparatus 5 can be equally divided into 5 in the present embodiment
Secondary unloading, often step loads 2000kN.
S3, the pile body displacement calculating test pile 1 according to the pile body corner of loading procedure test pile 1 and pile strain amount and soil
Relation to the counteracting force of test pile 1；Pile body corner according to uninstall process test pile 1 calculates test pile with pile strain amount
The pile body displacement of 1 and the soil relation to the counteracting force of test pile 1.
In sum, the marine wind electric field fan single-pile foundation test pile supporting construction of band cantilever design of the present invention, breach
Conventional piles base axial bearing capacity and the restriction of horizontal bearing capacity, achieved by vertical loading and topple greatly curved to blower foundation applying
Square, can accurately reflect the character of single-pile foundation carrying.
In sum, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause
This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art
All equivalences become are modified or change, and must be contained by the claim of the present invention.
Claims (7)
1. the marine wind electric field fan single-pile foundation test pile supporting construction of a band cantilever design, it is characterised in that include respectively
Being inserted vertically into the test pile (1) in seabed and support stake (2), described support stake (2) is provided with at least one, on described support stake (2)
Side is provided with a longeron (3)；Also include a cantilever beam (4), first end (41) of described cantilever beam (4) and described test pile (1)
Top is connected, and first end (42) of described cantilever beam (4) is positioned at the top of described longeron (3), and described longeron (3) is provided with top
Rising device (5), described jacking apparatus (5) is positioned between described cantilever beam (4) and described longeron (3).
The marine wind electric field fan single-pile foundation test pile supporting construction of band cantilever design the most according to claim 1, it is special
Levying and be: described support stake (2) is provided with two or many, all of described support stake (2) is arranged side by side, and vertical with described respectively
Beam (3) connects.
The marine wind electric field fan single-pile foundation test pile supporting construction of band cantilever design the most according to claim 1, it is special
Levy and be: described jacking apparatus (5) is jack.
The marine wind electric field fan single-pile foundation test pile supporting construction of band cantilever design the most according to claim 1, it is special
Levy and be: described cantilever beam (4) passes through welding or the Flange joint top in described test pile (1).
5. support according to the marine wind electric field fan single-pile foundation test pile of the band cantilever design according to any one of claim 1-4
The construction method of structure, it is characterised in that comprise the steps:
S1, use pile hammer carry out test pile (1) piling construction so that described test pile (1) is inserted vertically into seabed；
S2, use pile hammer are supported stake (2) piling construction so that described support stake (2) is inserted vertically into seabed；
S3, support stake (2) top set up longeron (3) so that support stake (2) be connected with longeron (3)；
S4, erection cantilever beam (4) so that one end of cantilever beam (4) is fixedly connected on the top of described test pile (1), the other end
It is positioned at the top of described longeron (3)；
S5, placement jacking apparatus (5) between described cantilever beam (4) and described longeron (3).
The construction of the marine wind electric field fan single-pile foundation test pile supporting construction of band cantilever design the most according to claim 5
Method, it is characterised in that: in step S2, when supporting stake (2) and being provided with two or more, successively different support stakes (2) is entered
Row piling construction, and make it be arranged side by side, until all of support stake (2) completes piling construction.
The marine wind electric field fan single-pile foundation test pile test pile supporting construction of band cantilever design the most according to claim 5
Construction method, it is characterised in that: in step S3, successively different support stakes (2) is connected with longeron (3), until all of
Support stake (2) to be connected with longeron (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610719809.9A CN106120879A (en) | 2016-08-24 | 2016-08-24 | Marine wind electric field fan single-pile foundation test pile supporting construction with cantilever design and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610719809.9A CN106120879A (en) | 2016-08-24 | 2016-08-24 | Marine wind electric field fan single-pile foundation test pile supporting construction with cantilever design and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106120879A true CN106120879A (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610719809.9A Pending CN106120879A (en) | 2016-08-24 | 2016-08-24 | Marine wind electric field fan single-pile foundation test pile supporting construction with cantilever design and construction method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101383234B1 (en) * | 2012-11-19 | 2014-04-10 | 한국건설기술연구원 | Apparatus for repeatedly horizontal load of pile and test method for horizontal load support force of pile using the same |
| CN104563170A (en) * | 2015-01-14 | 2015-04-29 | 中国电建集团华东勘测设计研究院有限公司 | Offshore wind power generation mono-pile foundation horizontal bearing capacity test counterforce device and construction method thereof |
| CN205224129U (en) * | 2015-12-21 | 2016-05-11 | 武汉科技大学 | Single pile basis vertical bearing capacity's experiment detection device |
| CN105625486A (en) * | 2016-02-26 | 2016-06-01 | 福建省新能海上风电研发中心有限公司 | Sea foundation pile anti-drawing testing device and testing method thereof |
| CN206015738U (en) * | 2016-08-24 | 2017-03-15 | 上海勘测设计研究院有限公司 | Marine wind electric field fan single-pile foundation test pile supporting construction with cantilever design |
-
2016
- 2016-08-24 CN CN201610719809.9A patent/CN106120879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101383234B1 (en) * | 2012-11-19 | 2014-04-10 | 한국건설기술연구원 | Apparatus for repeatedly horizontal load of pile and test method for horizontal load support force of pile using the same |
| CN104563170A (en) * | 2015-01-14 | 2015-04-29 | 中国电建集团华东勘测设计研究院有限公司 | Offshore wind power generation mono-pile foundation horizontal bearing capacity test counterforce device and construction method thereof |
| CN205224129U (en) * | 2015-12-21 | 2016-05-11 | 武汉科技大学 | Single pile basis vertical bearing capacity's experiment detection device |
| CN105625486A (en) * | 2016-02-26 | 2016-06-01 | 福建省新能海上风电研发中心有限公司 | Sea foundation pile anti-drawing testing device and testing method thereof |
| CN206015738U (en) * | 2016-08-24 | 2017-03-15 | 上海勘测设计研究院有限公司 | Marine wind electric field fan single-pile foundation test pile supporting construction with cantilever design |
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Application publication date: 20161116 |
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