CN207846456U - A kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region - Google Patents
A kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region Download PDFInfo
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- CN207846456U CN207846456U CN201721814109.4U CN201721814109U CN207846456U CN 207846456 U CN207846456 U CN 207846456U CN 201721814109 U CN201721814109 U CN 201721814109U CN 207846456 U CN207846456 U CN 207846456U
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- concrete
- base expanding
- prestress wire
- bearing platform
- prestressing force
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Abstract
The utility model discloses a kind of prestressing force base expanding and base expanding anchor cable blower foundations for Rock Region, it include the concrete bearing platform on ground, running through up and down in the concrete bearing platform has prestress wire, in the ground, the upper end of the prestress wire is fixed on the concrete bearing platform anchoring lower ends of the prestress wire after prestressing force tenses.The utility model is easy for construction, low cost, safe, when prestress wire is enough, be suitable for soft rock, it is weak it is being coupled, there is the ground complex foundation basic conditions such as special construction, ingredient, state.
Description
Technical field
The utility model is related to ground field more particularly to a kind of prestressing force base expanding and base expanding anchor cable wind turbine bases for Rock Region
Plinth.
Background technology
Existing gravity foundation is generally reinforced concrete structure, be volume is maximum in all type of foundation, weight most
Big basis makes wind turbine keep vertical by the gravity of itself, but, gravity type foundation is more demanding to geological conditions, works as ground
It needs to carry out stiffening basic ground when bearing capacity is unsatisfactory for requiring.
Utility model content
In view of this, the embodiments of the present invention provide a kind of easy for construction, low cost, safe are used for rock
The prestressing force base expanding and base expanding anchor cable basis in stone area.
The embodiments of the present invention provide a kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region, including set
There are prestress wire, the prestress wire in running through up and down in the concrete bearing platform on ground, the concrete bearing platform
Anchoring lower ends in the ground, the upper end of the prestress wire is fixed on the concrete after prestressing force tenses and holds
On platform.
Further, running through up and down in the concrete bearing platform has prestressed anchor, the anchoring lower ends of the prestressed anchor
In concrete bearing platform, the upper end of the prestressed anchor is fixed on the concrete bearing platform, the prestressed anchor it is upper
End is connected with concrete tower, and the concrete tower is backwards to the centrally disposed of concrete bearing platform.
Further, the concrete bearing platform is round table-like, and the concrete material of the concrete bearing platform is C40~C60 high
Reinforced concrete, the concrete bearing platform include interior layer concrete and outer concrete, and the interior layer concrete surrounds a cavity, institute
It states and is not filled with any object in cavity, the prestress wire is located in outer concrete, and positioned at the outer of outer concrete
Lateral edges, the prestressed anchor are located in interior layer concrete.
Further, the quantity of the prestress wire is 16~40, and every prestress wire is vertically arranged, institute
There is prestress wire to surround 1~2 circle, and the equal equidistantly distributed of prestress wire on each circle.
Further, the quantity of the prestressed anchor is 90~300, and every prestressed anchor is vertically arranged, described
Prestressed anchor circle, and the prestressed anchor can be replaced, and can carry out tensioning from bottom.
Further, the prestress wire uses 42CrMo high-alloy steel materials, specification is divided into 12.7,15.24,
17.8,18.9 or 21.6.
Further, high-pressure rotary jet grouting pile or cast-in-situ bored pile, the lower end anchor of the prestress wire are equipped in the ground
Gu in the high-pressure rotary jet grouting pile or cast-in-situ bored pile, stake depth 10m~40m, stake diameter 230mm~1500mm, quantity 16~
300.
Further, the height of the concrete bearing platform is 2~5m, a diameter of 5~15m.
Further, the concrete bearing platform is prefabricated or cast-in-place.
Compared with prior art, the utility model has the advantages that：
1. prestress wire is made of high-strength material and has reliable anchoring system, thus it can provide it is a considerable number of
Prestressing force.
2. prestress wire can be designed by given magnitude of load, direction and construction, with clearly defined objective, parameter can be adjusted flexibly
It is whole.
3. the length of prestress wire is generally longer, can anchor into the rock stratum stablized to deep comparatively robust.
4. construction technology is easy, influence factor is small, and can also be matched with other reinforcement measures.
5. easy for construction, low cost, safe, when prestress wire is enough, it is suitable for soft rock, weak is coupled
, there is the ground complex foundation basic condition such as special construction, ingredient, state.
Description of the drawings
Fig. 1 is an a kind of sectional view of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region of the utility model.
Fig. 2 is an a kind of vertical view of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region of the utility model.
Specific implementation mode
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is further described.
Referring to FIG. 1, the embodiments of the present invention provide a kind of prestressing force base expanding and base expanding anchor cable wind for Rock Region
Machine basis, includes concrete bearing platform 1 on ground, prestress wire 2, prestressed anchor 3, concrete tower 4, described
Prestressed anchor 3 can be substituted with prestress anchorage cable.
Concrete bearing platform 1 is round table-like, and concrete bearing platform 1 is prefabricated or cast-in-place, and the highly preferred of concrete bearing platform 1 is 2
~5m, diameter are preferably 5~15m, and the concrete material of the concrete bearing platform 1 is C40~C60 high-strength concretes, described mixed
Solidifying soil cushion cap 1 includes interior layer concrete 11 and outer concrete 12, and the interior layer concrete 11 surrounds a cavity 111, the sky
Any object is not filled in chamber 111,
Referring to FIG. 2, running through up and down in concrete bearing platform 1 has prestress wire 2, under the prestress wire 2
End is anchored in the ground i.e. grouted part 21, in one embodiment, high-pressure rotary jet grouting pile or cast-in-situ bored pile is equipped in ground
(not shown), the anchoring lower ends of the prestress wire 2 are in the high-pressure rotary jet grouting pile or cast-in-situ bored pile, stake depth
10m~40m, stake diameter 230mm~1500mm, quantity 16~300, the upper end of the prestress wire 2 is drawn through prestressing force
Next to be fixed on the concrete bearing platform 1 i.e. outer anchoring section 22, prestress wire 2 preferably uses 42CrMo high alloy steel
Material, specification are divided into 12.7,15.24,17.8,18.9,21.6 etc., and in one embodiment, prestress wire 2 is located at outer layer coagulation
In soil 12, and positioned at the outer ledge of outer concrete 12, the quantity of prestress wire 2 is 16~40, every prestressing force
Steel strand wires 2 are vertically arranged, and all prestress wires 2 surround 1~2 circle, and the prestress wire 2 on each circle is equal
Equidistantly distributed.
Running through up and down in concrete bearing platform 1 has prestressed anchor 3, and the concrete bearing platform 1 is reserved when prefabricated or cast-in-place
Duct, channel diameter are generally 40mm~150mm, for placing prestressed anchor 3 or prestress anchorage cable, the prestressed anchor
The anchoring lower ends of bar 3 are fixed in concrete bearing platform 1, and using anchor slab or anchorage, and the upper end of the prestressed anchor 3 is fixed on
On the concrete bearing platform 1, in one embodiment, the prestressed anchor 3 is located in interior layer concrete 11, the prestressed anchor
The quantity of bar 3 is 90~300, and every prestressed anchor 3 is vertically arranged, 3 circle of the prestressed anchor, and described
Prestressed anchor can be replaced, and can carry out tensioning from bottom.
The upper end of prestressed anchor 3 is connected with concrete tower 4, and the concrete tower 4 is held backwards to concrete
Platform 1 it is centrally disposed.
Embodiment 1
As shown in Figure 1 and Figure 2, the height of concrete bearing platform be 2~3m, a diameter of 8~15m, 1 cushion cap of concrete bearing platform and
Basic rock stratum connection prestress wire 2.Wherein：Concrete material C40~C60 high-strength concretes of concrete bearing platform 1 mix
Solidifying soil cushion cap 1 can be prefabricated or cast-in-place.Prestress wire 2 divides for 1~2 circle, and prestress wire 2 is vertical, and number is
16~40.
After the completion of the placement of basis, 1 interior location of concrete bearing platform reserves corresponding duct, these ducts are known as free segment,
Post-stretching is carried out to prestressed anchor 3 or prestress anchorage cable with tensioner, using anchorage the anchor pole or anchorage cable anchoring after tensioning
On the top of concrete bearing platform 1, the prestressing force of anchor pole is transmitted to concrete by the anchorage on 1 top of concrete bearing platform, makes it
Compressive pre-stress is generated, C60~C80 high-strength concretes or high-strength cement mortar are finally poured into duct, makes prestress wire 2
Entirety is formed with concrete component, reinforces stability.When top, tall and slender structure transmits huge moment of flexure, first can fully,
Steel elastic strength amplitude, prestress wire 2 is repeatedly utilized to pass through negative stress → zero stress → direct stress → design strength
The process of stress reaches structural bearing capacity final value, to improve structural-load-carrying capacity.So such foundation structure can more be held
The huge bending moment that easy resistance is transmitted by top tall and slender structure further increases base support power and the effect of resist torque.
In terms of foundation bearing characteristic, the presence of prestress wire 2 can increase the rigidity of local ground, be applied to prestress wire 2
The pretension added increases the contact on basis and ground, to enhance ground globality and improve foundation bearing capacity.
The construction method of specific embodiment includes step：
Main construction process is：Surveying setting-out》》Basic excavation》》Check of foundation subsoil》》Casting concrete screed-coat》》Foundation ring is pacified
Dress》》Reinforcement installation and making》》PH pipes are installed》》Concreting》》PH pipes are removed》》Cast-in-situ bored pile》》High-pressure slip-casting》》Expand
Bottom anchor cable installation positioning》》Consolidation》》Maintenance》》Apply prestressing force.
Cast-in-situ bored pile is made on ground, is punched using down-hole hammer, prestress wire 2 is put into drilling, then hole
Interior grouting, in drilling, a part is then placed in prefabricated or pours mixed 2 part of prestress wire outside ground at this time
Solidifying soil, will be aligned if precast concrete prestress wire 2, casting concrete will on prestress wire 2 casing, protect
Card post-stretching is smoothed out.The regular reinforcement on cushion cap is bound, cushion cap is then poured, is mixed using health film and straw screen or mat
The top maintenance of solidifying soil covering cushion cap, pouring concrete reaches design strength after guarantee.
Prestress wire 2 exposes the size on cushion cap surface in 0.5m or so, anchors on cushion cap anchorage, ensures prestressing force
Steel strand wires 2 can be normally carried out the length of post-stretching.
The construction technology process of prestress wire 2 includes：
Drill including down-hole hammer, be put into prestress wire 2 and high-pressure slip-casting etc..Using air down-hole hammer drilling machine in high pressure
Pore-forming on rotary churning pile.Method for filling is by the way of the reversed slip casting of bottom hole, and slurries are inwardly poured into from Grouting Pipe, and gas is expelled directly out,
Grouting material is C30~C80 grouting materials in hole.
The utility model prestress wire is made of high-strength material and has reliable anchoring system, thus it can be provided
A considerable number of prestressing force；Prestress wire can be designed by given magnitude of load, direction and construction, with clearly defined objective, parameter
It can be adjusted flexibly；The length of prestress wire is generally longer, can anchor into the rock stratum stablized to deep comparatively robust；It applies
Work simple process, influence factor is small, and can also be matched with other reinforcement measures；It is easy for construction, low cost, safe,
It is being coupled suitable for soft rock, weakness, complicated with ground such as special construction, ingredient, states when prestress wire is enough
Foundation condition.
Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region, which is characterized in that include mixed on ground
Soil cushion cap is coagulated, running through up and down in the concrete bearing platform has prestress wire, the anchoring lower ends of the prestress wire to exist
In the ground, the upper end of the prestress wire is fixed on after prestressing force tenses on the concrete bearing platform；It is described mixed
Up and down through there is prestressed anchor in solidifying soil cushion cap, the anchoring lower ends of the prestressed anchor are described pre- in concrete bearing platform
The upper end of stress anchor pole is fixed on the concrete bearing platform, and the upper end of the prestressed anchor is connected with concrete tower,
And the concrete tower is backwards to the centrally disposed of concrete bearing platform.
2. the prestressing force base expanding and base expanding anchor cable blower foundation according to claim 1 for Rock Region, which is characterized in that described
Concrete bearing platform is round table-like, and the concrete material of the concrete bearing platform is C40~C60 high-strength concretes, the concrete
Cushion cap includes interior layer concrete and outer concrete, and the interior layer concrete surrounds a cavity, is not filled in the cavity any
Object, the prestress wire are located in outer concrete, and positioned at the outer ledge of outer concrete, the prestressed anchor
Bar is located in interior layer concrete.
3. the prestressing force base expanding and base expanding anchor cable blower foundation according to claim 2 for Rock Region, which is characterized in that described
The quantity of prestress wire is 16~40, and every prestress wire is vertically arranged, and all prestress wires surround 1
~2 circles, and the equal equidistantly distributed of prestress wire on each circle.
4. the prestressing force base expanding and base expanding anchor cable blower foundation according to claim 2 for Rock Region, which is characterized in that described
The quantity of prestressed anchor is 90~300, and every prestressed anchor is vertically arranged, the prestressed anchor circle,
And the prestressed anchor can be replaced, and can carry out tensioning from bottom.
5. the prestressing force base expanding and base expanding anchor cable blower foundation according to claim 1 for Rock Region, which is characterized in that described
Prestress wire uses 42CrMo high-alloy steel materials, specification to be divided into 12.7,15.24,17.8,18.9 or 21.6.
6. the prestressing force base expanding and base expanding anchor cable blower foundation according to claim 1 for Rock Region, which is characterized in that described
Be equipped with high-pressure rotary jet grouting pile or cast-in-situ bored pile in ground, the anchoring lower ends of the prestress wire in the high-pressure rotary jet grouting pile or
In cast-in-situ bored pile, stake depth 10m~40m, stake diameter 230mm~1500mm, quantity 16~300.
7. the prestressing force base expanding and base expanding anchor cable blower foundation according to claim 1 for Rock Region, which is characterized in that described
The height of concrete bearing platform is 2~5m, a diameter of 5~15m.
8. the prestressing force base expanding and base expanding anchor cable blower foundation according to claim 1 for Rock Region, which is characterized in that described
Concrete bearing platform is prefabricated or cast-in-place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721814109.4U CN207846456U (en) | 2017-12-22 | 2017-12-22 | A kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721814109.4U CN207846456U (en) | 2017-12-22 | 2017-12-22 | A kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region |
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| Publication Number | Publication Date |
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| CN207846456U true CN207846456U (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721814109.4U Active CN207846456U (en) | 2017-12-22 | 2017-12-22 | A kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938696A (en) * | 2017-12-22 | 2018-04-20 | 中国地质大学（武汉） | A kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region |
| CN113818474A (en) * | 2021-09-13 | 2021-12-21 | 金华电力设计院有限公司 | Assembly type bearing platform anchor cable foundation of power transmission tower and construction method |
-
2017
- 2017-12-22 CN CN201721814109.4U patent/CN207846456U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938696A (en) * | 2017-12-22 | 2018-04-20 | 中国地质大学（武汉） | A kind of prestressing force base expanding and base expanding anchor cable blower foundation for Rock Region |
| CN113818474A (en) * | 2021-09-13 | 2021-12-21 | 金华电力设计院有限公司 | Assembly type bearing platform anchor cable foundation of power transmission tower and construction method |
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