CN203846520U - Fan foundation applicable to soft foundation liquefaction - Google Patents
Fan foundation applicable to soft foundation liquefaction Download PDFInfo
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- CN203846520U CN203846520U CN201420113838.7U CN201420113838U CN203846520U CN 203846520 U CN203846520 U CN 203846520U CN 201420113838 U CN201420113838 U CN 201420113838U CN 203846520 U CN203846520 U CN 203846520U
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- pile
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- bearing platform
- soft
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- 239000004568 cement Substances 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 11
- 238000003672 processing method Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract 3
- 239000002689 soil Substances 0.000 description 13
- 239000004576 sand Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a fan foundation applicable to soft foundation liquefaction. In order to solve high cost of a current liquefaction processing method of a soft and weak foundation, the fan foundation applicable to a soft foundation liquefaction comprises a plurality of vertically arranged cement stirring piles, a plurality of vertically arranged precast tube piles among the cement stirring piles, a concrete bearing platform disposed on the top end of the cement stirring piles and the precast tube piles, and a foundation ring for fan fixation, which is fixed on the upper part of the concrete bearing platform. The fan foundation applicable to the soft foundation liquefaction in the utility model is constructed conveniently and efficiently, has low construction cost and satisfies safety requirements.
Description
Technical field
The utility model relates to fan foundation structure field, is specially a kind of blower foundation of the soft base that is applicable to liquefy, and is mainly applicable to the soft clay area of liquefying.
Background technology
China's Coastal Areas wind energy resources is abundant, and DEVELOPMENT PROSPECT is wide.But this area's complex geologic conditions, mostly is soft foundation, and ubiquity Liquefaction.The processing of liquefying of adopt this area's blower foundation sand compaction pile or broken stone pile, even do not take with idea of leaving things to chance the treatment measures that liquefy more.Because this area's sand material lacks relatively, sand compaction pile or the broken stone pile processing cost that liquefies is higher; And the risk of the processing of not liquefying is larger.
Utility model content
In order to overcome the higher deficiency of the existing liquefaction processing method of soft foundation cost, the utility model aims to provide a kind of blower foundation of the soft base that is applicable to liquefy, and this blower foundation easy construction is efficient, and cost is lower, and can meet safety requirements.
To achieve these goals, the technical scheme that the utility model adopts is:
A kind of blower foundation of the soft base that is applicable to liquefy, its design feature is, comprise the many vertical cement mixing piles of arranging, be arranged on the many vertical prefabricated tubular piles of arranging between cement mixing pile, be arranged on the concrete bearing platform on cement mixing pile and prefabricated tubular pile top, be fixed on the discharge ring of concrete bearing platform top for fixing blower fan.
Be below the technical scheme of further improvement of the utility model:
As a kind of concrete form of structure, described discharge ring is embedded in concrete bearing platform top.
Connect an entirety of formation in order to realize concrete bearing platform, discharge ring, top blower fan and bottom prefabricated tubular pile, described prefabricated tubular pile and concrete bearing platform are fixedly linked.
Preferably, described concrete bearing platform is reinforced concrete pile cap.
Preferably, described prefabricated tubular pile is PHC pile tube, i.e. prestressed high strength concrete pile tube.
The construction method of the blower foundation of the soft base that is applicable to liquefy described in the utility model comprises the steps:
1), according to the soil capability parameter primary Calculation in blower foundation to be installed region go out need the size of concrete bearing platform and quantity and the length of PHC pile tube, configure corresponding cement mixing pile;
2), construction cement mixing pile, after construction, carry out between cement mixing pile soil capability and detect;
3), readjust quantity and the length of PHC pile tube the final size of definite concrete bearing platform according to the soil capability parameter after construction.
Wherein, the quantity of the size of primary Calculation concrete bearing platform and PHC pile tube and length, and readjust quantity and the length of PHC pile tube, final size of determining concrete bearing platform etc. all can be obtained according to the correlation formula in " wind-powered electricity generation unit Base foundation design specifies " and " technical code for building pile foundation ".
By said structure, the utility model utilizes the liquefaction of cement mixing pile elimination upper soil horizon to form non-liquefying soil covering layer inhibition bottom liquefying soil and sprays water and gush sand and keep pile foundation monolithic stability in a large number; By the vertical pressure load of PHC pile tube and cement mixing pile shared top blower fan; PHC pile tube is born uplift force and the horizontal force of top blower fan; Reinforced concrete pile cap and the discharge ring being embedded in wherein connect an entirety of formation with top blower fan and bottom PHC pile tube.
Compared with prior art, the fan foundation structure that the utility model provides is applicable to the soft clay area of liquefying, and has the following advantages: (1) structural shape is simple, easy construction; (2) cost is low.(3) liquefaction impact not only can be effectively eliminated in the enforcement of cement mixing pile, strengthens safety, and has improved ground, provides better construction environment to follow-up construction.
Below in conjunction with drawings and Examples, the utility model is further elaborated.
Brief description of the drawings
Fig. 1 is the structural plan schematic diagram of the utility model embodiment;
Fig. 2 is the vertical section schematic diagram of Fig. 1.
In the drawings:
1-cement mixing pile; 2-PHC pile tube: 3-reinforced concrete pile cap; 4-discharge ring.
Detailed description of the invention
A kind of blower foundation of the soft base that is applicable to liquefy, as shown in Figure 1, comprise the many vertical cement mixing piles 1 of arranging, be arranged on the many vertical PHC pile tubes 2 of arranging between cement mixing pile 1, be fixedly connected on the reinforced concrete pile cap 3 on cement mixing pile 1 and PHC pile tube 2 tops, be fixed on the discharge ring 4 of reinforced concrete pile cap 3 tops for fixing blower fan.Described discharge ring 4 is embedded in concrete bearing platform 3 tops.
Concrete construction method is as follows:
(1) first primary Calculation goes out to need the size of reinforced concrete pile cap 3 and quantity and the length of PHC pile tube 2, configure corresponding cement mixing pile 1;
(2) constructed after cement mixing pile 1 and carried out the detection of inter-pile soil soil capability;
(3) readjust quantity and the length of PHC pile tube 2 according to new soil capability parameter, and the size of definite reinforced concrete pile cap 3, engineering quantity reduced.
Example: the coastal mudflat wind electric field in Jiangsu, 33 blower fans that single-machine capacity is 1.5MW are installed, wind-powered electricity generation place basic earthquake intensity is VII degree, and silt fine sand layer is serious liquefaction, and each soil layer mechanics parameter index sees the following form 1.
Table 1 foundation soil structural mechanics parameter value
As calculated, blower foundation cushion cap bottom radius is 8.8m, and cushion cap volume is 446m
3; PHC(D600) 24 of pile tubes, the long 30m of stake; In PHC pile tube, outside is evenly arranged 72 (the about 1.5m of spacing) cement mixing piles (D500, L=10m), after cement mixing pile driving construction completes, detects, and each soil layer mechanics parameter index sees the following form 2.
Table 2 foundation soil structural mechanics parameter value
As calculated, blower foundation dimension of platform is constant; PHC(D600) pile tube quantity is constant, and stake is long to be shortened as 25m by 30m.
40 yuan/m of cement mixing pile (D500) unit price, the cement mixing pile cost of separate unit blower foundation is 2.88 ten thousand yuan; PHC(D600) 400 yuan/m of pile tube unit price, the PHC pile tube cost that separate unit blower foundation is saved is 4.8 ten thousand yuan.Comprehensively relatively after, adopt cement mixing pile can make separate unit blower foundation save approximately 20,000 yuan of costs, the wind energy turbine set of an installation 50MW can be saved approximately 660,000 yuan of costs.
The content that above-described embodiment is illustrated should be understood to these embodiment only for being illustrated more clearly in the utility model, and be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present utility model.
Claims (5)
1. the blower foundation of the soft base that is applicable to liquefy, it is characterized in that, comprise the many vertical cement mixing piles (1) of arranging, be arranged on the many vertical prefabricated tubular piles (2) of arranging between cement mixing pile (1), be arranged on the concrete bearing platform (3) on cement mixing pile (1) and prefabricated tubular pile (2) top, be fixed on the discharge ring (4) of concrete bearing platform (3) top for fixing blower fan.
2. the blower foundation of the soft base that is applicable to liquefy according to claim 1, is characterized in that, described discharge ring (4) is embedded in concrete bearing platform (3) top.
3. the blower foundation of the soft base that is applicable to liquefy according to claim 1 and 2, is characterized in that, described prefabricated tubular pile (2) is fixedly linked with concrete bearing platform (3).
4. the blower foundation of the soft base that is applicable to liquefy according to claim 1 and 2, is characterized in that, described concrete bearing platform (3) is reinforced concrete pile cap.
5. the blower foundation of the soft base that is applicable to liquefy according to claim 1 and 2, is characterized in that, described prefabricated tubular pile (2) is PHC pile tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113838.7U CN203846520U (en) | 2014-03-13 | 2014-03-13 | Fan foundation applicable to soft foundation liquefaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113838.7U CN203846520U (en) | 2014-03-13 | 2014-03-13 | Fan foundation applicable to soft foundation liquefaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203846520U true CN203846520U (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113838.7U Expired - Lifetime CN203846520U (en) | 2014-03-13 | 2014-03-13 | Fan foundation applicable to soft foundation liquefaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203846520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835306A (en) * | 2014-03-13 | 2014-06-04 | 中国水电顾问集团中南勘测设计研究院有限公司 | Draught fan foundation applicable to liquefaction soft foundation and construction method thereof |
-
2014
- 2014-03-13 CN CN201420113838.7U patent/CN203846520U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835306A (en) * | 2014-03-13 | 2014-06-04 | 中国水电顾问集团中南勘测设计研究院有限公司 | Draught fan foundation applicable to liquefaction soft foundation and construction method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |