CN104603367A - Ribbed foundation for superstructures and method for producing the foundation - Google Patents
Ribbed foundation for superstructures and method for producing the foundation Download PDFInfo
- Publication number
- CN104603367A CN104603367A CN201380041624.1A CN201380041624A CN104603367A CN 104603367 A CN104603367 A CN 104603367A CN 201380041624 A CN201380041624 A CN 201380041624A CN 104603367 A CN104603367 A CN 104603367A
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- CN
- China
- Prior art keywords
- basic part
- ribbing
- concrete
- ribs
- rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/016—Flat foundations made mainly from prefabricated concrete elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/02—Flat foundations without substantial excavation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/08—Reinforcements for flat foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The present invention relates to a reinforced-concrete foundation system for erecting superstructures that transmit high axial loads, shearing forces and/or flexural moments at individual points, such as, for example, wind turbines. The foundation that is the subject matter of the present invention is formed by an upper reinforced-concrete slab poured "in situ", of polygonal or circular footprint, and which is made rigid at the bottom by means of reinforced-concrete ribs of rectangular or trapezial cross section which are arranged radially. The method makes provision for said ribs to be produced from concrete "in situ" or, alternatively, by means of prefabricated elements, always working jointly with the upper slab. This new foundation considerably reduces the costs of forming traditional foundations for this type of superstructure, by considerably improving completion deadlines.
Description
Goal of the invention
The present invention relates to the reinforced concrete basic part system for erectting superstructure, this superstructure transmits the high axial load at each some place, shearing force and/or moment of flexure, such as, be wind turbine.
The top concrete panels that basic part object of the present invention is poured into a mould by " scene " with polygonal or circular used area is formed, and the reinforced concrete rib with rectangle or trapezoidal cross-section of this top concrete panels at bottom place by radial arrangement is strengthened.The method is imagined described rib and is made up of concrete at " scene ", or alternately, is made by the prefabricated elements worked integratedly with upper plate all the time.
This new basic part is intended to significantly reduce by having significantly improved the time limit cost built for the conventional base part of this superstructure.
Background of invention
Nowadays be following foundation slab for the type of the basic part of the superstructure of such as wind turbine and so on the most continually, that is, this foundation slab has different used area configurations: used area configuration can be square, circular, hexagon, octagon etc.For making the optimized object of concrete use, the edge of plate can be constant or variable.
Applicant knows that existence is attempted to make iron and steel and concrete amount other basic part systems minimized, the basic part system such as in following publication:
Such as, known European patent application EP 1074663, it discloses the example of the basic part with three stabilizing members arranged symmetrically around central support pieces, wherein, the shortcoming of this basic part is that the surface contacted with stratum is considerably less, and the stress put on thus on stratum and on settlement increases.
Patent application PCT WO2004/101898 describes a kind of circular foundation part based on prefabricated triangular-section.This solution needs the cavity excavated that fully soars, thus cause the concrete section of inverted T-shaped, the concrete section of this inverted T-shaped due to the width of the concrete head (concrete head) of pressurized very little and do not comprise any structural advantage.This means when calculating flexibility, neutral axis will reduce and will there is less mechanical arm, thus the ductility in cross section significantly declines to the demand increase of reinforcing.
Finally, Spanish patent application ES-2347742 describes the cone-shaped footing part together with lower flat annular slab.This implements very complicated solution, and about its structural performance, the serious problems had.
Type for the basic part of these superstructures is well-known and the technical scheme easily calculating and design, and further simplify mould bases and structure to the simplification of this basic part.But the shortcoming of such basic part is too large, therefore iron and steel and concrete use and the amount in soil that is removed very large, all these all significantly increase the financial cost of structure.Superstructure is larger, and the cost impact of cost to structure of basic part is larger; Such as, with regard to wind turbine, the increase of axle height from 80m to 120m (adding 50%) produces the basic part cost increase of 300%.This problem has the trend of the more and more high-performance wind turbine of the axle height of 120m but very real owing to building, it produces the cost increase of production basis part, thus becomes the weak competitor for the conventional system of all these production reinforced concrete basic parts.
Summary of the invention
In order to overcome the problems referred to above of prior art, the present invention proposes following solution, the upper concrete panels with the used area of polygon or circle that this solution is poured into a mould by " scene " is formed, and is strengthened by the reinforced concrete rib with rectangle or trapezoidal cross-section of radial arrangement from central cores at bottom place.Concrete for rib casts directly over the stratum of previously excavating, and plate rests on the stratum that is not also removed as permanent mould bases.
The solution of the rib comprising upper plate and at bottom place, plate is strengthened refers to two kinds of elements relatives in the layout of floor surface of building basic part, wherein, and first installation plate and ribs will be arranged in the below of plate.
The advantage of this basic part is:
The concrete amount that-concrete amount that uses uses in above-mentioned conventional solution.
-along with the minimizing of the carrying to soot subsequently, excavate costs reduces.
-reduce and simplify mould bases.
-because compression is absorbed by plate, therefore obtain unmatched T-shaped durability section efficiency.
Ribs can be made with concrete " scene " or can be prefabricated, thus work integratedly with upper plate all the time, and ribs can have constant or variable edge, can for or there is stepped edge or there is the edge of constant slope, wherein, the central cores leaving plate is far away, and the cross section of ribs is less.
When using completely prefabricated ribs, the outstanding girth member that described rib will be provided with for being connected with the plate that " scene " builds.Ribs can also such as be made by half prefabricated element---as double-walled member---, and wherein, when fluid concrete is with basis of formation part, this half prefabricated element keeps embedding.
The upper concrete panels that is circular or polygonal used area that has that basic part object of the present invention is poured into a mould by " scene " is formed, and on this, the reinforced concrete rib with rectangle or trapezoidal cross-section of concrete panels at bottom place by radial arrangement is strengthened.When reinforced concrete rib has trapezoidal cross-section, rib will be wider in the top that it contacts with plate, excavates embankment as permanent mould bases, thus increase concrete section drag to utilize.
Described basic part is obtained by direct " scene " fluid concrete on the stratum be not removed and is used as permanent mould bases.Plate and the necessary all girth members of rib were placed in position before fluid concrete.
Because compression to be absorbed by upper plate and girth member in tension force is placed in inside ribs bottom decomposes, therefore produce the T-shaped durability cross section with high structure efficiency.
In order to the use of optimised coagulation soil further when not jeopardizing the carrying quality of basic part and by the soil amount excavated, can form step in the excavation of rib, therefore change the edge of rib, the center that this edge leaves plate is far away then less.
Described rib can be made with concrete " scene ", or described rib can be completely or partially prefabricated, thus works integratedly with upper plate all the time.
In the stratum with minimum supporting capacity, can make stake in the below of ribs, thus the structure design of footing is suitable for surface foundation part and deep foundation part.
Stratum is enhanced by the post be made up of gravel be positioned at below ribs.
In addition, upper plate not necessarily must cover ribs completely single part by the outer end from the inner of ribs to ribs is formed, and on the contrary, described upper plate can be formed by some parts, and wherein, Part I covers the central cores of ribs.In this article, should be understood that, term " part " refer to median plate with other parts that may be separated of described plate part physical.On the other hand, central cores is the position that the inner of different ribs be combined with each other, and therefore central cores is considered to be the ingredient of described ribs.
Therefore, the most simple configuration of upper plate of the present invention and the inner only covering ribs of upper plate single part of---that is, only covering central cores---is consistent.But in another preferred embodiment of the present invention, median plate is formed by following two parts: the Part I covering central cores, and the looped second portion of periphery, the looped second portion of this periphery is separated with Part I and the outer end of connection rib.The Part II of the outer end of the described rib of the connection due to plate makes assembly strengthen, and therefore while the basic part performance that maintenance is good, the concrete amount used reduces.
In another preferred embodiment of the present invention, central cores also has the cylindrical shape of hollow, therefore saves more concrete and makes the weight of basic part lighter.
Accompanying drawing explanation
In order to complete ongoing description and understand feature of the present invention better to contribute to, to the additional one group of accompanying drawing of this manual, in the accompanying drawings, be described following by illustrative and nonrestrictive feature:
Fig. 1 shows the stereogram of whole system.
Fig. 2 shows the stereogram of the basic part with rib, and wherein, this rib has stepped variable cross section.
Fig. 3 shows the longitdinal cross-section diagram intercepted along a rib.
Fig. 4 shows cross-sectional view.
Fig. 5 shows the stereogram of the basic part of the rib with trapezoid cross section.
Fig. 6 shows the T-shaped durability cross section object of basic part of the present invention and the stress strain diagram for calculating flexibility.
Fig. 7 shows the stress strain diagram for calculating flexibility of inverted T-shaped durability cross section and correspondence.
Fig. 8 shows the top perspective view of the basic part according to improvement of the present invention, and wherein, upper plate only covers central cores.
Fig. 9 shows the top perspective view according to the basic part that another improves of the present invention, and wherein, upper plate comprises the Part II covering the Part I of central cores and the outer end of connection rib.
Figure 10 shows the face upwarding stereogram according to the basic part that another improves of the present invention, and wherein, weight is lighter owing to having the drum of hollow for central cores.
Detailed description of the invention
Fig. 1 shows the stereogram by the whole system formed for the basic part (3) in the structure of wind turbine and axle (4).
In embodiment shown in Fig. 1 to Fig. 5, the basic part that the upper concrete panels (1) poured into a mould by " scene " is formed can be observed, on this, concrete panels (1) such as has polygonal occupation of land district, but it is such as circular that it such as can have any other shape, and on this, concrete panels (1) is strengthened by the reinforcing rib (2) with rectangular cross section at bottom place, and this reinforcing rib (2) is made by reinforced concrete and radially arranged.
Fig. 6 and 7 shows sample calculation.In the case of fig. 6, calculate for T section, and obtain the ultimate resistance square of 33,600KNm and the x/h ratio of 0.16.In the case of fig. 7, calculate for inverted T section, and obtain the stall torque of 27,900KNm and the x/d ratio of 0.62.
Therefore can find out, by the concrete of identical girth member with identical amount, T section (basic part object of the present invention) for basic part object of the present invention by structurally more effective for the type of power of bearing, wherein, the bending strength higher than bending strength 20% is which provided.
The balance requirement in cross section: the decrement of making a concerted effort to equal to be born by concrete of the tension force born by girth member.T section has wider compression head, and this allows neutral axis to keep high-order, and compared with the situation of inverted T section, mechanical arm is obviously larger.
In addition, as can by indicating the degree of depth of neutral axis relative to the x/h at the edge in cross section than determining, the ductility in T section more greatly, redistribute by the plasticity this achieving the power in plastic region.
Although there is shown inverted T section to have the girth member of identical amount and the concrete fact, its ductility is less, and therefore inverted T section will not have any ability redistributed for the plasticity of power, thus shows as fragility.
Therefore, the T section proposed has two-fold advantage:
-larger supporting capacity and higher structure efficiency, that is, obtain larger drag (exceed 20% in institute's analysis examples, and even higher than higher requirement level) with identical girth member and concrete amount.
The plasticity of-larger ductility and stronger power redistributes ability, and this makes it be more suitable for dynamic requirements, is such as produced dynamic requirements by earthquake.
Fig. 8 to 10 shows following embodiment, and in this embodiment, concrete slab (1) does not cover whole ribs, and just covers the part in ribs.Particularly, Fig. 8 illustrates the example of basic part, and this basic part comprises upper plate (1), and this upper plate (1) is formed by the single part of the central cores (7) covering ribs (2).
Fig. 9 shows another example of basic part, in this basic part, upper plate (1) is formed by following two parts: the Part I (1) similar to the part of the central cores (7) of the only covering ribs (2) shown in Fig. 8, and connects the looped second portion (6) of periphery of outer end of all ribs (2).This makes the concrete total amount reducing to use while keeping component stiffness.
Figure 10 shows another example of basic part, this basic part has the upper plate (1) similar to the upper plate in Fig. 8, this upper plate (1) only covers the central cores (7) of ribs (2), and wherein, this central cores (7) also has the drum of hollow.Rib (2) is covered completely and central cores (7) is compared with solid other embodiment of the present invention, the weight of assembly and the dual minimizing of the amount of material with plate (1) wherein.
Finally, for the description of the method for production basis part (3), the basic part mentioned is obtained by direct " scene " fluid concrete on the stratum shape also do not removed, thus is used as permanent mould bases.As seen in Figure 5, when excavating radial rib and being to provide the trapezoid cross section of described rib, the natural embankment on the stratum produced improves its supporting capacity significantly.
Therefore, the method for the production of basic part can comprise the steps:
-excavation stratum has the cavity with the shape of base components complementation to be formed.
-in excavated cavity, build girth member, wherein, the opening of this girth member overlay (1) and reinforcing rib (2).
-by pouring concrete in the cavity excavated in stratum, and wherein, girth member has been arranged in this cavity.
In order to the use of optimised coagulation soil further when not jeopardizing the carrying quality of basic part and by the amount in soil excavated, as shown in Figure 2, end difference (5) can be formed by the excavation of rib, thus changes the edge of rib, and the center that this edge leaves plate is far away then less.
Described rib can be made up of concrete " scene " or by completely or partially prefabricated (such as, half prefabricated elements by such as double-walled), thus can work integratedly with upper plate all the time.
Claims (12)
1. the basic part with ribbing for superstructure, it is characterized in that, described basic part with ribbing is formed by upper concrete panels (1), and described upper concrete panels (1) is had polygonal or circular used area and strengthened by the reinforced concrete rib (2) with the radial direction of rectangular cross section coming from central cores (7) at bottom place.
2. the basic part with ribbing for superstructure according to last item claim, wherein, described reinforced concrete rib (2) has trapezoidal cross-section, and the top contacted with described plate (1) of described reinforced concrete rib (2) is wider excavates embankment as permanent mould bases to utilize, thus increase concrete cross-section face drag.
3. the basic part with ribbing for superstructure according to claim 1 and 2, wherein, described reinforced concrete rib (2) has constant or variable edge, or be stepped edge (5) or the edge for having constant slope, the center then described gradient far away leaving described plate (1) is less.
4. the basic part with ribbing for superstructure according to any one in aforementioned claim, is also included in a series of stakes of described ribs (2) below.
5. the basic part with ribbing for superstructure according to any one in aforementioned claim, is also included in the post be made up of gravel below described ribs to improve stratum.
6. the basic part with ribbing for superstructure according to any one in aforementioned claim, wherein, described ribs (2) is completely prefabricated, and described ribs (2) is provided with the outstanding girth member for being connected with the described plate (1) that " scene " builds.
7. the basic part with ribbing for superstructure according to any one in aforementioned claim, wherein, described ribs (2) is made by half prefabricated element, and described half prefabricated element is such as double-walled member.
8. the basic part with ribbing for superstructure according to any one in aforementioned claim, wherein, described upper concrete slab (1) comprises the Part I of the described central cores (7) covering described rib (2).
9. the basic part with ribbing for superstructure according to claim 8, wherein, described upper concrete slab (1) also comprises the looped second portion (6) of periphery, and the looped second portion (6) of described periphery is separated with described Part I and connects the outer end of described rib (2).
10. the basic part with ribbing for superstructure according to any one in aforementioned claim, wherein, described central cores (7) has the cylindrical shape of hollow.
11. 1 kinds of productions are used for the method for the basic part of superstructure, and it is characterized in that, described method comprises the steps:
-excavation stratum has the cavity with the shape of basic part complementation according to any one in claim 1 to 10 to be formed;
-in excavated cavity, build girth member, described girth member cover described reinforcing rib (2) with the opening of described plate (1);
-by pouring concrete in the described cavity excavated in described stratum, and described girth member has been arranged in described cavity.
12. productions according to claim 11 are used for the method for the basic part of upper component, wherein, in described cavity, be furnished with multiple post of being made up of gravel or multiple stake, described multiple post of being made up of gravel or multiple stake are arranged in below the described ribs of described basic part.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201230877A ES2388161B1 (en) | 2012-06-06 | 2012-06-06 | Ribbed superstructure foundation and foundation completion procedure |
| ESP201230877 | 2012-06-06 | ||
| ESP201330083 | 2013-01-25 | ||
| ES201330083A ES2406390B1 (en) | 2013-01-25 | 2013-01-25 | Improvements in ribbed foundation superstructure and foundation completion procedure |
| PCT/ES2013/070367 WO2013182728A1 (en) | 2012-06-06 | 2013-06-06 | Ribbed foundation for superstructures and method for producing the foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104603367A true CN104603367A (en) | 2015-05-06 |
| CN104603367B CN104603367B (en) | 2018-02-13 |
Family
ID=49711456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380041624.1A Expired - Fee Related CN104603367B (en) | 2012-06-06 | 2013-06-06 | Method for the basic part with ribbing of superstructure and for producing the basic part |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US20150121784A1 (en) |
| EP (1) | EP2886723B1 (en) |
| CN (1) | CN104603367B (en) |
| AU (1) | AU2013273463B2 (en) |
| CA (1) | CA2875927A1 (en) |
| CL (1) | CL2014003338A1 (en) |
| DK (1) | DK2886723T3 (en) |
| HR (1) | HRP20170901T1 (en) |
| MX (1) | MX349972B (en) |
| PL (1) | PL2886723T3 (en) |
| PT (1) | PT2886723T (en) |
| WO (1) | WO2013182728A1 (en) |
| ZA (1) | ZA201409032B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6436256B1 (en) * | 2017-07-04 | 2018-12-12 | 株式会社タケウチ建設 | Building basic structure and construction method |
| US11283395B2 (en) | 2018-03-23 | 2022-03-22 | Nextracker Inc. | Multiple actuator system for solar tracker |
| JP6685560B2 (en) * | 2018-05-28 | 2020-04-22 | 中村物産有限会社 | Foundation structure for wind power generator |
| US11387771B2 (en) | 2018-06-07 | 2022-07-12 | Nextracker Llc | Helical actuator system for solar tracker |
| AT522250A1 (en) * | 2019-02-28 | 2020-09-15 | Holcim Technology Ltd | Foundation for a wind turbine |
| US11050383B2 (en) | 2019-05-21 | 2021-06-29 | Nextracker Inc | Radial cam helix with 0 degree stow for solar tracker |
| JP6868301B1 (en) * | 2019-12-02 | 2021-05-12 | 株式会社タケウチ建設 | Foundation structure of a building and its construction method |
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- 2013-06-06 DK DK13800718.2T patent/DK2886723T3/en active
- 2013-06-06 PL PL13800718T patent/PL2886723T3/en unknown
- 2013-06-06 US US14/406,114 patent/US20150121784A1/en not_active Abandoned
- 2013-06-06 EP EP13800718.2A patent/EP2886723B1/en not_active Not-in-force
- 2013-06-06 MX MX2014014991A patent/MX349972B/en active IP Right Grant
- 2013-06-06 CA CA2875927A patent/CA2875927A1/en not_active Abandoned
- 2013-06-06 CN CN201380041624.1A patent/CN104603367B/en not_active Expired - Fee Related
- 2013-06-06 AU AU2013273463A patent/AU2013273463B2/en not_active Ceased
- 2013-06-06 PT PT138007182T patent/PT2886723T/en unknown
-
2014
- 2014-12-05 CL CL2014003338A patent/CL2014003338A1/en unknown
- 2014-12-09 ZA ZA2014/09032A patent/ZA201409032B/en unknown
-
2017
- 2017-06-13 HR HRP20170901TT patent/HRP20170901T1/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| PL2886723T3 (en) | 2017-10-31 |
| EP2886723A1 (en) | 2015-06-24 |
| DK2886723T3 (en) | 2017-06-19 |
| CA2875927A1 (en) | 2013-12-12 |
| CL2014003338A1 (en) | 2015-07-24 |
| HRP20170901T1 (en) | 2017-10-20 |
| CN104603367B (en) | 2018-02-13 |
| PT2886723T (en) | 2017-06-08 |
| MX2014014991A (en) | 2015-11-06 |
| AU2013273463A1 (en) | 2015-01-22 |
| EP2886723A4 (en) | 2016-11-16 |
| WO2013182728A1 (en) | 2013-12-12 |
| AU2013273463B2 (en) | 2017-06-15 |
| EP2886723B1 (en) | 2017-03-15 |
| US20150121784A1 (en) | 2015-05-07 |
| ZA201409032B (en) | 2015-12-23 |
| MX349972B (en) | 2017-08-23 |
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