CN205134355U - A foundation structure for shallow overburden wind generating set - Google Patents
A foundation structure for shallow overburden wind generating set Download PDFInfo
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- CN205134355U CN205134355U CN201520954513.6U CN201520954513U CN205134355U CN 205134355 U CN205134355 U CN 205134355U CN 201520954513 U CN201520954513 U CN 201520954513U CN 205134355 U CN205134355 U CN 205134355U
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- foundation structure
- concrete
- generating set
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- wind power
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Abstract
The utility model discloses a foundation structure especially discloses a basis knot that is used for shallow overburden wind generating set, belongs to the design of wind electrical engineering building and builds technical field. The utility model provides a construction progress is fast, a foundation structure for shallow overburden wind generating set that construction cost is low. Foundation structure include that concrete extension plinth personally experiences sth. Part of the body basically, foundation structure still include well morals and manners limestone excavation foundation ditch to based on showing above the well morals and manners limestone rock stratum, the cutting depth of well morals and manners limestone excavation foundation ditch between 0.3m~1.0m, concrete extension plinth personally experience sth. Part of the body basically and pass through anticreep layer structural arrangement and be in well morals and manners limestone excavation foundation ditch in.
Description
Technical field
The utility model relates to a kind of foundation structure, especially relates to a kind of basis for shallow overburden wind power generating set knot, belongs to wind energy project Building Design building technology field.
Background technology
At present, building the most frequently used method in Wind turbines basis in thinner covering layer area is, adopt bearing stratum based on natural ground, then by artificial concrete foundation buried depth about about 3.5 meters, then in described artificial concrete foundation, cover the construction that back fill course compacting completes basis.Under normal circumstances, the overburden layer on existing thinner covering layer basement rock is general all more shallow, and the actual (real) thickness of most of overburden layer is all less than 2.0 meters.For meeting the checking computations requirement of Wind turbines basic engineering stability, rule of thumb all need excavation of foundation pit to designing buried depth, thus make the open excavation of described foundation structure except the overburden layer on basement rock top, also must carry out the excavation of certain depth to horizon d itself, form the excavation pit needing the degree of depth.And the basement rock below the covering layer in thinner covering layer area excavates difficulty generally all greatly, like this, just cause excavation cost to raise in a large number, the excavation construction cycle extends at double, and then inapplicable wind-power electricity generation economy, fast Development characteristics.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of construction speed fast, the foundation structure for shallow overburden wind power generating set that construction cost is low.
: a kind of foundation structure for shallow overburden wind power generating set that comprise concrete expansion plinth element body, described foundation structure also comprises apoplexy ashing rock excavation pit for solving the problems of the technologies described above adopted technical scheme; Above apoplexy ashing rock rock stratum based on table, the cutting depth of described apoplexy ashing rock excavation pit is between 0.3m ~ 1.0m; Described concrete expansion plinth element body passes through resist delamination structural configuration in described apoplexy ashing rock excavation pit.
The beneficial effects of the utility model are: the application is mostly in conjunction with the basement rock in shallow overburden area the apoplexy ashing rock stratum feature that lithology is better, carrying can be higher, the degree of depth of existing excavation pit about 3.5 meters is revised as after overburden layer excavated, above apoplexy ashing rock rock stratum based on table, the cutting depth excavating the described apoplexy ashing rock excavation pit that apoplexy ashing rock is formed downwards more only needs 0.3m ~ 1.0m, and then described concrete expansion plinth element body is passed through resist delamination structural configuration in described apoplexy ashing rock excavation pit.Like this, not only can reduce the cutting depth excavating difficult larger apoplexy ashing rock excavation pit in a large number, accelerating construction progress, reduce construction cost, and due to described concrete expansion plinth element body be by resist delamination structural configuration in described apoplexy ashing rock excavation pit, so described foundation structure still can meet the checking computations requirement of Wind turbines basic engineering stability.
Further, described resist delamination structure is formed by strengthening connecting reinforcement, and bottom and the described concrete of described apoplexy ashing rock excavation pit expand that to be connected bar connecting by described reinforcement between plinth element body as a whole.
Be further, the resist delamination concrete that described resist delamination structure comprises back taper anticreep hole and is cast in this back taper anticreep hole, described back taper anticreep hole is arranged on the bottom surface of described apoplexy ashing rock excavation pit, and it is one-body molded that plinth element body expanded by described resist delamination concrete and described concrete.
Further, described foundation structure also comprises the top back fill course of degree of compaction not low 0.94; With described apoplexy ashing rock excavation pit bottom surface for basal plane, the thickness that plinth element body expanded by the thickness of described top back fill course and described concrete adapts.
Further, the upper surface of described top back fill course reduces gradually to surrounding centered by described concrete expansion plinth element body.
Further, the upper surface of described top back fill course is also coated with one deck low strength concrete erosion control brush layer.
Further, described concrete expansion plinth element body is made up of steel concrete.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model for the foundation structure of shallow overburden wind power generating set;
Fig. 2 is the schematic diagram of the another kind of resist delamination structure that the utility model relates to.
Be labeled as in figure: concrete expansion plinth element body 1, apoplexy ashing rock excavation pit 2, resist delamination structure 3, back taper anticreep hole 4, resist delamination concrete 5, top back fill course 6, low strength concrete erosion control brush layer 7.
Detailed description of the invention
That a kind of construction speed that the utility model provides is fast as shown in Figure 1 and Figure 2, the foundation structure for shallow overburden wind power generating set that construction cost is low.Described foundation structure comprises concrete expansion plinth element body 1, described foundation structure also comprises apoplexy ashing rock excavation pit 2, above apoplexy ashing rock rock stratum based on table, the cutting depth of described apoplexy ashing rock excavation pit 2 is between 0.3m ~ 1.0m, and described concrete expansion plinth element body 1 is arranged in described apoplexy ashing rock excavation pit 2 by resist delamination structure 3.The application is mostly in conjunction with the basement rock in shallow overburden area the apoplexy ashing rock stratum feature that lithology is better, carrying can be higher, the degree of depth of existing excavation pit about 3.5 meters is revised as after overburden layer excavated, above apoplexy ashing rock rock stratum based on table, the cutting depth excavating the described apoplexy ashing rock excavation pit 2 that apoplexy ashing rock is formed downwards more only needs 0.3m ~ 1.0m, and then is arranged in described apoplexy ashing rock excavation pit 2 by resist delamination structure 3 by described concrete expansion plinth element body 1.Like this, not only can reduce the cutting depth excavating difficult larger apoplexy ashing rock excavation pit 2 in a large number, accelerating construction progress, reduce construction cost, and due to described concrete expansion plinth element body 1 be arranged in described apoplexy ashing rock excavation pit 2, so described foundation structure still can meet the checking computations requirement of Wind turbines basic engineering stability by resist delamination structure 3.
In above-mentioned enforcement side, in conjunction with described in the feature that is usually made up of steel concrete of concrete expansion plinth element body 1, described resist delamination structure 3 can be the structure be made up of reinforcement connecting reinforcement, also can be to cheat 4 structures formed with the resist delamination concrete 5 be cast in this back taper anticreep hole 4 by comprising back taper anticreep.When adopt strengthen structure that connecting reinforcement forms time, bottom and the described concrete of described apoplexy ashing rock excavation pit 2 expand that to be connected bar connecting by described reinforcement between plinth element body 1 as a whole; When adopt by comprise back taper anticreep cheat 4 and be cast in this back taper anticreep cheat the structure that the resist delamination concrete 5 in 4 forms time, described back taper anticreep hole 4 is arranged on the bottom surface of described apoplexy ashing rock excavation pit 2, and it is one-body molded that plinth element body 1 expanded by described resist delamination concrete 5 and described concrete.By above-mentioned resist delamination structure 3, described concrete expansion plinth element body 1 is connected as a whole with described apoplexy ashing rock excavation pit 2, just greatly can strengthen the connection described in the application between foundation structure and ground, avoid the basis after building up in use to occur the operating mode of toppling.
Further, in order to avoid the foundation structure described in the application in use occurs tilting, the serious accident of even toppling, foundation structure described in the application equally also comprises the top back fill course 6 of degree of compaction not low 0.94, and with described apoplexy ashing rock excavation pit 2 bottom surface for basal plane, the thickness that plinth element body 1 expanded by the thickness of described top back fill course 6 and described concrete adapts.And causing top back fill course 6 to damage in order to avoid ponding, the upper surface of described top back fill course 6 is set to reduce gradually to surrounding centered by described concrete expansion plinth element body 1 by the application; Meanwhile, on the upper surface of described top back fill course 6, one deck low strength concrete erosion control brush layer 7 is also also coated with.Like this, top back fill course 6 just can be prevented to greatest extent to be endangered because of sleet ponding.
Be below the Stability Checking comparison sheet on existing about 3.5 meters buried foundation structures and the application basis:
Known according to upper table, based under same design initial conditions, as calculated, the stable calculation of the foundation structure after existing conventional foundation structure and the application improve comes to the same thing, and all meets specification and rock & soil mechanical parameter requirement.
And calculate according to field statistics, by under the same design initial conditions being applicable to engineering construction feature of the present invention, Wind turbines basis after adopting the application to improve is compared traditional Wind turbines embedded depth of foundation and can be reduced about 0.5 meter, rock excavation amount reduces by 200 cubic metres/platform, direct saving construction investment about 1.5 ten thousand/platform, save construction period about 3 days/platform, improvement result is remarkable.
Claims (7)
1., for a foundation structure for shallow overburden wind power generating set, comprise concrete expansion plinth element body (1), it is characterized in that: described foundation structure also comprises apoplexy ashing rock excavation pit (2); Above apoplexy ashing rock rock stratum based on table, the cutting depth of described apoplexy ashing rock excavation pit (2) is between 0.3m ~ 1.0m; Described concrete expansion plinth element body (1) is arranged in described apoplexy ashing rock excavation pit (2) by resist delamination structure (3).
2. the foundation structure for shallow overburden wind power generating set according to claim 1, it is characterized in that: described resist delamination structure (3) is made up of reinforcement connecting reinforcement, bottom and the described concrete of described apoplexy ashing rock excavation pit (2) expand that to be connected bar connecting by described reinforcement between plinth element body (1) as a whole.
3. the foundation structure for shallow overburden wind power generating set according to claim 1, it is characterized in that: the resist delamination concrete (5) that described resist delamination structure (3) comprises back taper anticreep hole (4) and is cast in this back taper anticreep hole (4), described back taper anticreep hole (4) is arranged on the bottom surface of described apoplexy ashing rock excavation pit (2), and it is one-body molded that plinth element body (1) expanded by described resist delamination concrete (5) and described concrete.
4. the foundation structure for shallow overburden wind power generating set according to claim 1,2 or 3, is characterized in that: described foundation structure also comprises the top back fill course (6) of degree of compaction not low 0.94; With described apoplexy ashing rock excavation pit (2) bottom surface for basal plane, the thickness that plinth element body (1) expanded by the thickness on described top back fill course (6) and described concrete adapts.
5. the foundation structure for shallow overburden wind power generating set according to claim 4, is characterized in that: the upper surface on described top back fill course (6) reduces gradually to surrounding centered by described concrete expansion plinth element body (1).
6. the foundation structure for shallow overburden wind power generating set according to claim 5, is characterized in that: on the upper surface on described top back fill course (6), be also coated with one deck low strength concrete erosion control brush layer (7).
7. the foundation structure for shallow overburden wind power generating set according to claim 4, is characterized in that: described concrete expansion plinth element body (1) is made up of steel concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954513.6U CN205134355U (en) | 2015-11-26 | 2015-11-26 | A foundation structure for shallow overburden wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954513.6U CN205134355U (en) | 2015-11-26 | 2015-11-26 | A foundation structure for shallow overburden wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205134355U true CN205134355U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520954513.6U Withdrawn - After Issue CN205134355U (en) | 2015-11-26 | 2015-11-26 | A foundation structure for shallow overburden wind generating set |
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| Country | Link |
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| CN (1) | CN205134355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350563A (en) * | 2015-11-26 | 2016-02-24 | 中国电建集团成都勘测设计研究院有限公司 | Shallow foundation structure for wind driven generator set |
-
2015
- 2015-11-26 CN CN201520954513.6U patent/CN205134355U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350563A (en) * | 2015-11-26 | 2016-02-24 | 中国电建集团成都勘测设计研究院有限公司 | Shallow foundation structure for wind driven generator set |
| CN105350563B (en) * | 2015-11-26 | 2018-08-21 | 中国电建集团成都勘测设计研究院有限公司 | Wind power generating set shallow foundation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160406 Effective date of abandoning: 20180821 |
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| AV01 | Patent right actively abandoned |