CN216640550U - Prefabricated sheet pile assembled connection structure's section of thick bamboo type fan basis and wind generating set - Google Patents
Prefabricated sheet pile assembled connection structure's section of thick bamboo type fan basis and wind generating set Download PDFInfo
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- CN216640550U CN216640550U CN202122941878.3U CN202122941878U CN216640550U CN 216640550 U CN216640550 U CN 216640550U CN 202122941878 U CN202122941878 U CN 202122941878U CN 216640550 U CN216640550 U CN 216640550U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a tubular fan foundation of a prefabricated sheet pile assembly type connecting structure and a wind generating set, wherein the tubular fan foundation comprises a plurality of prefabricated sheet piles and formworks, the prefabricated sheet piles are fixedly connected with the formworks, a space for pouring high-strength grouting material is formed between every two adjacent prefabricated sheet piles and the formworks, horizontal shear keys are arranged on the side surfaces of two sides of each sheet pile, and the horizontal shear keys are positioned in the space; a positioning and grouting template is arranged on one side surface of the sheet pile, and a grouting space is formed after the subsequent sheet pile is sunk, so that high-strength grouting material construction is carried out; the reliable connecting structure is formed at the connecting part of the prefabricated sheet piles through high-strength grouting, horizontal shear keys and the prefabricated sheet piles, so that the structural connection problem between the prefabricated sheet piles is solved, the prefabricated sheet piles form a cylindrical structure, the cylindrical structure is integrally stressed as the important structure of the fan foundation, and the site construction efficiency is improved.
Description
Technical Field
The utility model relates to the field of wind power plants, in particular to a cylindrical fan foundation with a prefabricated sheet pile assembly type connecting structure and a wind generating set.
Background
The wind turbine foundation is an important component part for building a wind power plant, and not only is the safe and reliable operation of the wind power plant concerned, but also the investment of the wind power plant is influenced. According to the adaptability of geological conditions, the existing common fan foundations comprise an extended fan foundation and a pile foundation, the extended foundation mainly utilizes the gravity of the extended foundation to resist the large bending moment load of an upper structure, and the extended foundation is adopted after foundation treatment is carried out on the extended foundation when the geological conditions are weak. The pile foundation is adopted under the condition that the natural foundation does not meet the requirements of bearing capacity, deformation and the like of a foundation structure, the vertical action of the pile is utilized to bear the bending moment load of an upper structure, and a bearing platform is arranged to be connected with a foundation pile to form an integral structure.
The prefabricated sheet pile assembled cylindrical fan foundation is characterized in that cement soil stirring is carried out in a prefabricated pile sinking area, then the prefabricated sheet piles are implanted, and after the prefabricated sheet piles are connected, an integral cylindrical structure is formed. The large bending moment of the fan is resisted by the combination of the cylindrical structure and the horizontal vertical resistance action of the soil body on the outer side. The structure and the construction method are suitable for most foundation conditions, particularly soft soil areas, and have the advantage of high construction efficiency. However, the connection treatment between the prefabricated sheet piles is often that the construction is difficult to control and the design concept requirement is met, the connection of the prefabricated sheet piles for the conventional foundation pit structure generally only needs to achieve the purpose of water stopping, and the requirement on the integrity of the structural connection is not high. The utility model aims to solve the structural connection problem of the precast sheet pile.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tubular fan foundation of a prefabricated sheet pile assembly type connecting structure, wherein two prefabricated sheet piles are connected through grouting, and the side surfaces of two sides of each sheet pile are provided with horizontal shear keys; and positioning and template steel plates are arranged on the single side surfaces of the sheet piles, and after the subsequent sheet piles are sunk, a grouting space is formed, and high-strength grouting material construction is carried out.
In order to achieve the purpose, the utility model adopts the technical scheme that: the cylinder type fan foundation of the prefabricated sheet pile assembly type connecting structure comprises a plurality of prefabricated sheet piles and formworks, wherein the prefabricated sheet piles are fixedly connected with the formworks, a space for filling high-strength grouting material is formed between every two adjacent prefabricated sheet piles and the formworks, horizontal shear keys are arranged on the side surfaces of two sides of each sheet pile, and the horizontal shear keys are located in the space.
Arranging concave-convex key grooves as horizontal shear keys at the adjacent end parts of the precast sheet piles along the vertical direction; the groove depth of the concave-convex key groove is not less than 10cm, and the vertical distance is not more than 3 times of the groove depth.
The template comprises a bottom template and side templates, the bottom template is arranged at the bottom end of the precast sheet pile, the side templates are arranged on one side of the precast sheet pile, and a set of templates is arranged between every two adjacent precast sheet piles; a reserved grouting space with an opening facing downwards for the prefabricated sheet pile is formed on one side surface of the single prefabricated sheet pile; the bottom template and the side template are provided with bending angles towards the inner side of the cylindrical structure.
The thickness of the steel plate used by the bottom template and the side template is not less than 2mm, the length of the steel plate extending out of the precast slab pile is not less than 50cm, and the ground elevation of the side template is 30cm higher than that of the pile sinking.
The strength of the high-strength grouting material is not lower than C80.
A cast-in-place pile is arranged on the inner side of the joint of one adjacent precast sheet pile; the cast-in-place pile is located in the main wind direction of the wind turbine generator system.
The concrete strength of the precast slab pile is not lower than C30, the thickness is not less than 50cm, and the length is 90 cm-150 cm.
The planar shape of the single precast sheet pile is rectangular or trapezoidal.
The utility model also provides a wind generating set, and a cylindrical fan foundation adopting the prefabricated sheet pile assembly type connecting structure.
Compared with the prior art, the utility model has at least the following beneficial effects: through the utility model relates to a connection structure on prefabricated sheet pile assembled shell-type fan basis, prefabricated sheet pile and template fixed connection form the space of filling the grout material that excels in between two adjacent prefabricated sheet piles and the template, and sheet pile both sides side sets up the level to the shear key, the level to the shear key be located in the space, form reliable connection structure through excel in grout, level to shear key and prefabricated sheet pile itself at the junction of prefabricated sheet pile, solved the structural connection problem between the prefabricated sheet pile, make the prefabricated sheet pile form the shell-type structure wholly, realize the whole atress of shell-type as fan basis important structure to site operation efficiency has been improved.
Drawings
FIG. 1 is a schematic top view of a structure in which the present invention may be implemented.
FIG. 2 is a schematic diagram of a bottom template structure in which the present invention may be implemented.
FIG. 3 is a schematic cross-sectional elevational view of one possible embodiment of the present invention.
In the figure: 1-prefabricating sheet piles; 2-concave-convex key groove; 3-bottom template; 4-side template; 5-blocking the template; 6-high-strength grouting.
Detailed Description
The utility model is explained in detail below with reference to the drawings and the detailed description.
As shown in fig. 1, fig. 2 and fig. 3, based on the above schemes, the tubular fan foundation of the prefabricated sheet pile assembly type connection structure provided by the utility model comprises a plurality of prefabricated sheet piles 1 and a template, the prefabricated sheet piles 1 are fixedly connected with the template, a space for pouring high-strength grouting material 6 is formed between two adjacent prefabricated sheet piles 1 and the template, horizontal shear keys are arranged on the side surfaces of two sides of each sheet pile, and the horizontal shear keys are located in the space.
Arranging concave-convex key grooves 2 as horizontal shear keys at the adjacent end parts of the precast sheet piles 1 along the vertical direction; the groove depth of the concave-convex key groove 2 is not less than 10cm, and the vertical distance is not more than 3 times of the groove depth.
The template comprises a bottom template 3 and a side template 4, the bottom template 3 is arranged at the bottom end of the precast sheet pile 1, the side template 4 is arranged at one side of the precast sheet pile 1, and a set of templates is arranged between two adjacent precast sheet piles 1; the single precast sheet pile 1 forms a reserved grouting space with an opening facing the lower precast sheet pile on a single side surface.
The thickness of the steel plates used by the bottom template 3 and the side template 4 is not less than 2mm, the length extending out of the precast sheet pile 1 is not less than 50cm, and the ground elevation of the side template 4 is 30cm higher than that of the pile sinking.
The strength of the high-strength grouting material 6 is not lower than C80.
A cast-in-place pile is arranged on the inner side of the joint of one adjacent precast sheet pile; the cast-in-place pile is located in the main wind direction of the wind turbine generator system.
The concrete strength of the precast slab pile 1 is not lower than C30, the thickness is not smaller than 50cm, and the length is 90 cm-150 cm.
As an alternative embodiment, the planar shape of the single precast sheet pile 1 is rectangular or trapezoidal.
The construction method of the cylindrical fan foundation comprises the following steps:
a plugging steel plate 5 is inserted into the reserved grouting 6 space of the single precast sheet pile 1 in advance and then is sunk;
then, sinking the prefabricated sheet pile 1 in the next procedure along the side template 4 of the sheet pile 1 in the previous procedure;
after the plugging steel plate 5 is drawn out, a closed pouring 6 space is formed between the two precast sheet piles 1, and high-strength grouting material is poured; setting the joint of two last-constructed adjacent precast sheet piles 1 in the main wind direction of the wind turbine generator, and when the two last-constructed adjacent precast sheet piles 1 are constructed, carrying out on-site processing on the angle and the size of the side template 4 according to actual positioning, sinking after positioning the sheet piles on the two corresponding sides, and then carrying out preorder grouting and final grouting; and constructing a cast-in-place pile on the inner side of the joint, wherein the width of the cast-in-place pile exceeds the two sides of the joint and is not less than 20cm respectively.
In the embodiment, the template comprises a bottom template 3 and side templates 4, wherein the bottom template 3 is arranged at the bottom end of the precast sheet pile 1, the side templates 4 are arranged on the side surfaces of the precast sheet piles 1, and a set of templates is arranged between every two adjacent precast sheet piles 1; a reserved grouting space with an opening facing downwards for the prefabricated sheet pile is formed on one side surface of the single prefabricated sheet pile 1; the bottom template 3 and the side template 4 are provided with bending angles towards the inner side of the cylindrical structure.
The adjacent end parts of the precast sheet piles 1 are provided with concave-convex key grooves 2 along the vertical direction to serve as horizontal shear keys; the groove depth of the concave-convex key groove 2 is 15cm, and the vertical distance is 3 times of the groove depth.
The concrete strength of a single precast slab pile 1 is C30, the thickness is 50cm, and the length is 100 cm; the plane shape of a single precast sheet pile is rectangular or trapezoidal, and the cross section of the horizontal shear key arranged on the side surfaces of the two sides is concave-convex.
Referring to fig. 2, a bottom template 3 is arranged on the bottom surface of a single precast slab pile, and the precast slab pile is sunk downwards in the direction beyond the size of concrete; the bottom template 3 and the side template 4 are provided with bending angles towards the inner side of the cylindrical structure and are arranged according to the angle size of the cylinder and the prefabricated sheet pile. The inner side and the outer side of the single precast slab pile are provided with the side templates 4 for auxiliary positioning and grouting, and the side templates 4 exceed the size of concrete and sink the precast slab pile in the downward direction. The side templates 4 are 30cm higher than the ground elevation after pile sinking. The thickness of the steel plate used by the bottom template 3 is 3mm, and the overhanging length is 60 cm. The thickness of the steel plate used by the side template 4 is 3mm, the overhanging length is generally not less than 50cm, and the steel plate is consistent with the bottom template 3.
The single precast sheet pile 1 forms a reserved grouting space with an opening facing the lower precast sheet pile on a single side surface.
The final sheet pile of the closed loop with the cylindrical structure is connected with the first sheet pile, special treatment is needed, the angles and the sizes of the inner and outer side templates of the final sheet pile are processed on site according to site positioning, the sheet piles on the two corresponding sides are positioned and then are sunk, and the pre-stage grouting and the final grouting are carried out.
And (3) connecting the last sheet pile with the first sheet pile by adopting a filling pile reinforcement method, and performing filling pile construction on the inner side of the filling pile, wherein the width of the filling pile is greater than each 30cm of two sides of the connecting joint. And the position of the cast-in-place pile is arranged in the main wind direction of the wind turbine generator.
The two precast sheet piles 1 are connected through high-strength grouting 6, and the lateral surfaces of two sides of each precast sheet pile 1 are provided with horizontal concave-convex shear keys 2; the single side of the precast sheet pile 1 is provided with a bottom template 3 and a side template 4, and after the subsequent precast sheet pile 1 is sunk, a grouting space is formed for high-strength grouting material 6 construction.
The construction process of the prefabricated sheet pile assembled cylindrical fan foundation comprises the following steps:
(1) a plugging steel plate 5 is inserted into the reserved grouting 6 space of the single precast sheet pile 1 in advance and then is sunk;
(2) then, sinking the prefabricated sheet pile 1 in the next procedure along the side template 4 of the sheet pile 1 in the previous procedure;
(3) and after the plugging steel plate 5 is drawn out, a closed pouring 6 space is formed between the two precast sheet piles 1, and high-strength grouting material is poured, wherein the strength of the grouting material is not lower than C80.
Claims (9)
1. The utility model provides a prefabricated sheet pile assembled connection structure's section of thick bamboo type fan basis which characterized in that, includes a plurality of prefabricated sheet piles (1) and template, prefabricated sheet pile (1) and template fixed connection form the space of pouring into high-strength grout material (6) between two adjacent prefabricated sheet piles (1) and the template, and sheet pile both sides side sets up the level to the key that shears, the level is to the key that shears is located in the space.
2. The cylinder type wind turbine foundation of prefabricated sheet pile assembly type connection structure according to claim 1, wherein the adjacent ends of the prefabricated sheet pile (1) are vertically provided with the concavo-convex key groove (2) as a horizontal shear key; the groove depth of the concave-convex key groove (2) is not less than 10cm, and the vertical distance is not more than 3 times of the groove depth.
3. The tubular fan foundation of the prefabricated sheet pile assembly type connecting structure according to claim 1, wherein the formworks comprise a bottom formwork (3) and a side formwork (4), the bottom formwork (3) is arranged at the bottom end of the prefabricated sheet pile (1), the side formwork (4) is arranged at one side of the prefabricated sheet pile (1), and a set of formworks is arranged between two adjacent prefabricated sheet piles (1); a reserved grouting space with an opening facing to the next precast sheet pile (1) is arranged on one side surface of the single precast sheet pile (1); the bottom template (3) and the side template (4) are provided with bending angles towards the inner side of the cylindrical structure.
4. The tubular fan foundation of the prefabricated sheet pile assembly type connection structure according to claim 3, wherein the thickness of the steel plate used by the bottom formwork (3) and the side formwork (4) is not less than 2mm, the length of the steel plate extending out of the prefabricated sheet pile (1) is not less than 50cm, and the height of the side formwork (4) is 30cm higher than the ground height after pile sinking.
5. The cylindrical fan foundation of precast sheet pile fabricated connection structure according to claim 1, wherein the strength of the high-strength grouting material (6) is not lower than C80.
6. The cylindrical fan foundation of a prefabricated sheet pile fabricated connection structure according to claim 1, wherein a cast-in-place pile is arranged inside a joint of adjacent prefabricated sheet piles; the cast-in-place pile is located in the main wind direction of the wind turbine generator system.
7. The tubular fan foundation of a prefabricated sheet pile assembly type connection structure according to claim 1, wherein the concrete strength of the prefabricated sheet pile (1) is not lower than C30, the thickness is not less than 50cm, and the length is 90 cm-150 cm.
8. A cylinder type wind turbine foundation of prefabricated sheet pile fabricated connection structure according to claim 1, wherein a plane shape of a single prefabricated sheet pile (1) is rectangular or trapezoidal.
9. A wind turbine generator system, characterized by a cylindrical wind turbine foundation using the prefabricated sheet pile fabricated connection structure of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122941878.3U CN216640550U (en) | 2021-11-26 | 2021-11-26 | Prefabricated sheet pile assembled connection structure's section of thick bamboo type fan basis and wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122941878.3U CN216640550U (en) | 2021-11-26 | 2021-11-26 | Prefabricated sheet pile assembled connection structure's section of thick bamboo type fan basis and wind generating set |
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| CN216640550U true CN216640550U (en) | 2022-05-31 |
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| CN202122941878.3U Active CN216640550U (en) | 2021-11-26 | 2021-11-26 | Prefabricated sheet pile assembled connection structure's section of thick bamboo type fan basis and wind generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931166A (en) * | 2021-11-26 | 2022-01-14 | 华能清能通榆电力有限公司 | Barrel-shaped fan foundation of prefabricated sheet pile assembly type connecting structure and construction method thereof |
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2021
- 2021-11-26 CN CN202122941878.3U patent/CN216640550U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931166A (en) * | 2021-11-26 | 2022-01-14 | 华能清能通榆电力有限公司 | Barrel-shaped fan foundation of prefabricated sheet pile assembly type connecting structure and construction method thereof |
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