CN111926851A - Pile-beam splicing combined type wind power foundation structure and construction method thereof - Google Patents
Pile-beam splicing combined type wind power foundation structure and construction method thereof Download PDFInfo
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- CN111926851A CN111926851A CN202010815964.7A CN202010815964A CN111926851A CN 111926851 A CN111926851 A CN 111926851A CN 202010815964 A CN202010815964 A CN 202010815964A CN 111926851 A CN111926851 A CN 111926851A
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
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- E02D27/44—Foundations for machines, engines or ordnance
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Abstract
The invention discloses a pile-beam splicing combined type wind power foundation structure which comprises a cylindrical prefabricated column (20); the top center position of the prefabricated table column is used for being vertically and fixedly connected with a tower barrel (60); the peripheral side walls of the prefabricated table columns are uniformly connected with the inner side ends of the prefabricated distribution beams (30) along the circumferential direction; the bottom surface of the outer side end of each prefabricated distribution beam is respectively connected with a pile head (101) arranged at the top end of a bottom pile foundation (10); each bottom pile foundation is deeply fixed into a foundation of a preset tower installation area; and the bottom of the prefabricated column is positioned on the surface of the foundation of the preset tower installation area. In addition, the invention also provides a construction method of the pile-beam splicing combined type wind power foundation structure. The wind power foundation structure is scientific in design, convenient to mount flexibly and reliably, high in structural strength and capable of meeting the construction requirements of wind power generation fields of target sites with poor geological conditions, limited transportation or limited land acquisition area.
Description
Technical Field
The invention relates to the technical field of wind power foundation structures, in particular to a pile-beam splicing combined type wind power foundation structure and a construction method thereof.
Background
Wind energy is an inexhaustible renewable clean energy. At present, wind power generation is one of the most potential sustainable projects.
Modern wind generating set mainly includes a tower section of thick bamboo and sets up the aerogenerator at the tower section of thick bamboo top, and guarantees the key of wind generating set safety and normal operating and lie in: a wind power foundation structure or so-called wind turbine foundation supporting a tower.
Among the prior art, wind-powered electricity generation infrastructure needs adopt different forms and is built by multiple different materials according to different geological conditions and wind generating set's difference, and wind-powered electricity generation infrastructure's main construction is with material for steel and reinforced concrete, and its major structure mainly includes: the base platform comprises a base platform, a bearing platform arranged on the base platform and a foundation ring arranged on the bearing platform and used for installing and fixing a tower barrel.
The construction of wind power plants is mainly based on available wind resources, and the geological structure of the sites with available wind resources varies greatly, so that different forms and methods are needed for the design and construction of wind power infrastructure to adapt to different geological conditions. For some target sites with poor geological conditions, limited transportation or limited land acquisition area, a wind power infrastructure which is light in weight, convenient to transport, green, environment-friendly, rapid, economical and high in quality needs to be designed so as to meet the construction requirements of a wind power plant.
However, the existing wind power infrastructure is unscientific in structural design, and cannot fully meet the construction requirements of a wind power plant for target sites with poor geological conditions, limited transportation or limited land acquisition area.
Disclosure of Invention
The invention aims to provide a pile-beam splicing combined type wind power foundation structure and a construction method thereof, aiming at the technical defects in the prior art.
Therefore, the invention provides a pile-beam splicing combined type wind power foundation structure which comprises vertically distributed cylindrical prefabricated table columns;
the top center position of the prefabricated table column is used for being vertically and fixedly connected with a tower cylinder;
the peripheral side walls of the prefabricated table columns are uniformly connected with the inner side ends of the prefabricated distribution beams along the circumferential direction;
the bottom surface of the outer side end of each prefabricated distribution beam is respectively connected with a pile head arranged at the top end of a vertically distributed bottom pile foundation;
each bottom pile foundation is deeply fixed into a foundation of a preset tower installation area;
and the bottom of the prefabricated column is positioned on the surface of the foundation of the preset tower installation area.
The preset tower drum installation area foundation is a tower drum installation area foundation which is distributed in a circular shape;
the plurality of bottom pile foundations are uniformly distributed along the circumferential direction;
the radius of the foundation of the tower installation area is preset to be larger than or equal to the sum of the radial length of the bottom pile foundation and the radius of the prefabricated column.
Wherein, every bottom pile foundation, through the mode of pile driving or drilling pouring, go deep to fix in predetermineeing tower section of thick bamboo installation area ground.
The top of the prefabricated table column is uniformly provided with a plurality of first anchor bolt holes along the circumferential direction;
the lower end of the tower barrel is fixedly connected with a base ring which is distributed annularly;
the foundation ring is uniformly provided with a plurality of second anchor bolt holes along the circumferential direction;
a plurality of second anchor bolt holes on the foundation ring and a plurality of first anchor bolt holes at the top of the prefabricated table column are respectively arranged in a one-to-one up-and-down manner;
wherein, in every first anchor keyhole of prefabricated styletable, the anchor goes into the connection crab-bolt that has a vertical distribution, and this connection crab-bolt is from down up after passing corresponding first anchor keyhole and second anchor keyhole in proper order, with a fastening nut fixed connection, fixed through fastening nut prefabricated styletable and basic ring.
The inner side end of each prefabricated distribution beam is vertically connected with the peripheral side walls of the prefabricated table columns;
each prefabricated distribution beam comprises a column connecting part and a pile foundation connecting part which are fixedly connected together;
wherein, the shape of the connecting part of the table column is rectangular;
the shape of the pile foundation connecting part is a right trapezoid;
the inner side of the connecting part of the table column is connected with the peripheral side wall of the prefabricated table column;
the outer end bottom surface of the pile foundation connecting part is correspondingly connected with a pile head arranged at the top end of a bottom pile foundation.
The prefabricated distribution beam is a plate beam manufactured by welding profile steels or a plate beam formed by pouring reinforced concrete;
the bottom pile foundation is a cast-in-situ bored pile, a precast concrete pipe pile or a precast steel pipe pile;
the bottom pile foundation is a spiral pile;
and prefabricating the platform column, wherein the prefabricated platform column is a concrete column or a steel pipe column.
In addition, the invention also provides a construction method of the pile-beam spliced wind power foundation structure, which comprises the following steps:
step S10, manufacturing prefabricated table posts, prefabricated distribution beams, foundation rings, connecting anchor bolts and fastening nuts outside the construction site of the wind generating set in advance;
step S20, the prefabricated table posts, the prefabricated distribution beams, the foundation rings, the connecting anchor bolts and the fastening nuts are conveyed to the construction site of the wind generating set;
step S30, uniformly and fixedly arranging a plurality of vertically distributed bottom pile foundations along the circumferential direction in a foundation of a preset tower installation area of a construction site of the wind generating set; presetting a tower drum mounting area foundation in a circular distribution;
step S40, placing the prefabricated table pillar on the surface of the center position of the foundation in the preset tower installation area, and then respectively connecting the inner side end and the outer side end of the plurality of prefabricated distribution beams with the peripheral side walls of the prefabricated table pillar and pile heads at the tops of the plurality of bottom pile foundations;
and S50, fixedly arranging a foundation ring at the top of the prefabricated table column, wherein the foundation ring is used for installing and fixing the tower barrel, so that the construction of the pile-beam splicing combined type wind power foundation structure is completed.
In step S30, presetting a radius of a foundation in a tower installation area, where the radius is greater than or equal to the sum of the radial length of a bottom pile foundation and the radius of a prefabricated column;
in step S30, when the bottom pile foundation is not transported to the construction site of the wind turbine generator system in step S20, the bottom pile foundation is fixedly arranged in a foundation of a preset tower installation area by adopting a drilling and pouring manner; the bottom pile foundation is a cast-in-situ bored pile;
in step S30, when the prefabricated bottom pile foundation is further transported in step S20, the bottom pile foundation is fixedly disposed in the foundation of the preset tower installation area by adopting a piling mode; the bottom pile foundation is a precast concrete tubular pile or a precast steel tubular pile.
In step S50, the foundation ring is fixed to the prefabricated pillar by the engagement of the connecting anchor bolt and the fastening nut;
the specific structural design is as follows:
a plurality of first anchor bolt holes are uniformly formed in the top of the prefabricated table column along the circumferential direction;
the lower end of the tower barrel is fixedly connected with a base ring which is distributed annularly;
the foundation ring is uniformly provided with a plurality of second anchor bolt holes along the circumferential direction;
a plurality of second anchor bolt holes on the foundation ring and a plurality of first anchor bolt holes at the top of the prefabricated table column are respectively arranged in a one-to-one up-and-down manner;
the specific operation is as follows: through in every first anchor keyhole at prefabricated stage post, the anchor goes into the connecting anchor that has a vertical distribution, then passes corresponding first anchor keyhole and second anchor keyhole from down up with this connecting anchor after with a fastening nut fixed connection in proper order, fixes through fastening nut prefabricated stage post 20 and basic ring.
Compared with the prior art, the pile-beam splicing combined wind power foundation structure and the construction method thereof have the advantages that the wind power foundation structure is scientific in structural design, convenient to flexibly and reliably install, high in structural strength, capable of meeting the requirements of wind power plant construction of target sites with poor geological conditions, limited transportation or limited land acquisition area, and significant in practical significance.
Drawings
Fig. 1a is a schematic perspective view of a pile-beam splicing combined wind power foundation structure provided by the invention;
fig. 1b is a schematic three-dimensional structure diagram of a pile-beam splicing combined type wind power foundation structure provided by the invention;
fig. 1c is a schematic perspective view of a tower to be installed in a pile-beam splicing combined wind power foundation structure provided by the invention;
fig. 2 is a schematic perspective view of a prefabricated distribution beam in the pile-beam splicing combined wind power foundation structure provided by the invention;
fig. 3 is a schematic view of a connection structure between each prefabricated distribution beam and a bottom pile foundation in the pile-beam splicing combined wind power foundation structure provided by the invention;
fig. 4 is a schematic perspective view of a pile-beam spliced combined wind power foundation structure provided by the invention when a foundation ring and a tower are not installed;
FIG. 5 is a schematic flow chart of a construction method of the pile-beam splicing combined type wind power foundation structure provided by the invention;
in the figure: the method comprises the following steps of (1) taking a bottom pile foundation 10, a prefabricated column 20, a prefabricated distribution beam 30, a foundation ring 40, a fastening nut 50 and a tower barrel 60 as main components.
Detailed Description
In order to make the technical means for realizing the invention easier to understand, the following detailed description of the present application is made in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In addition, it should be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the term "mounted" and the like should be interpreted broadly, and may be, for example, either fixedly mounted or detachably mounted.
The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
Referring to fig. 1a to 4, the present invention provides a pile-beam spliced wind power foundation structure, which includes vertically distributed, cylindrical prefabricated pillars 20;
the top center position of the prefabricated column 20 is used for vertically and fixedly connecting a tower 60;
the peripheral side walls of the prefabricated columns 20 are uniformly connected with the inner side ends of the prefabricated distribution beams 30 along the circumferential direction;
the bottom surface of the outer side end of each prefabricated distribution beam 30 is respectively connected with a pile head 101 arranged at the top end of a vertically distributed bottom pile foundation 10;
each bottom pile foundation 10 is fixed deeply into the foundation of a preset tower installation area (in a pile driving or drilling pouring mode);
the bottom of the prefabricated column 20 is located on the surface of the foundation of the preset tower installation area.
It should be noted that the whole of the bottom pile foundation 10, except for the pile head 101, is deeply fixed into the foundation of the predetermined tower installation area.
In the invention, in the concrete implementation, the foundation of the tower barrel installation area is preset to be a foundation of the tower barrel installation area distributed in a circular shape;
the plurality of bottom pile foundations 10 are uniformly distributed along the circumferential direction;
the radius of the foundation of the tower installation area is preset to be larger than or equal to the sum of the radial length of the bottom pile foundation 10 and the radius of the prefabricated column 20.
In the present invention, in a specific implementation, a plurality of first anchor bolt holes 201 are uniformly arranged along a circumferential direction at the top of the prefabricated column 20;
the lower end of the tower tube 60 is fixedly connected with a base ring 40 which is distributed annularly;
the foundation ring 40 is uniformly provided with a plurality of second anchor bolt holes along the circumferential direction;
the plurality of second anchor holes on the foundation ring 40 and the plurality of first anchor holes 201 on the top of the prefabricated column 20 are respectively arranged in an up-down one-to-one correspondence manner;
wherein, in every first anchor keyhole of prefabricated abutment post 20, the anchor has a connection crab-bolt of vertical distribution, and this connection crab-bolt passes corresponding first anchor keyhole and second anchor keyhole from down up in proper order after, with a fastening nut 50 fixed connection, fixes through fastening nut 50 prefabricated abutment post 20 and foundation ring 40.
Therefore, the foundation ring 40 can be fixedly installed on the top of the prefabricated columns 20 by the cooperation of the plurality of connection anchors and the plurality of fastening nuts 50.
In particular, the lower end of the tower 60 is fixedly connected with the foundation ring 40;
and the base ring 40 is used for installing and fixing the tower 60.
In concrete implementation, the base ring 40 and the bottom flange 601 of the tower cylinder 60 have a plurality of bolt holes which are the same in size and are correspondingly arranged up and down, and the two bolt holes can be connected into a whole through vertical connecting bolts. The tower cylinder is a conventional wind power supporting structure and has no innovation.
In the present invention, in a specific implementation, the inner end of each prefabricated distribution beam 30 is vertically connected to the peripheral side wall of the prefabricated column 20.
In the present invention, in a specific implementation, each prefabricated distribution beam 30 includes a column connecting portion 31 and a pile connecting portion 32 that are fixedly connected together;
wherein, the shape of the pillar connecting part 31 is rectangular;
the pile foundation connecting part 32 is in a right trapezoid shape;
the inner side of the column connecting part 31 is connected with the peripheral side wall of the prefabricated column 20;
the outer end bottom surface of the pile foundation connecting portion 32 is connected to a pile head 101 provided at the top end of one bottom pile foundation 10.
In particular, the prefabricated distribution beam 30 is preferably a plate beam formed by welding profile steels or a plate beam formed by pouring reinforced concrete.
In the present invention, the bottom pile foundation 10 may be a cast-in-situ bored pile, a precast concrete pipe pile, or a precast steel pipe pile.
In the present invention, the bottom pile foundation 10 is preferably a screw pile.
In the present invention, the prefabricated column 20, preferably a concrete column or a steel pipe column, is implemented.
In the present invention, the pre-fabricated stage 20 is, in particular, a spiral column.
In the present invention, the foundation ring 40 is preferably formed by pouring reinforced concrete.
In the invention, in a specific implementation, each prefabricated distribution beam 30 and the pile head 101 at the top end of the bottom pile foundation 10 can be connected through a preset splicing mechanism;
the preset splicing mechanism comprises pin hole connecting mechanisms which are matched with each other.
Referring to fig. 3, each prefabricated distribution beam 30 is fixedly connected with a pile head 101 at the top end of the bottom pile foundation 10 through bolts 102.
In the present invention, in a specific implementation, referring to fig. 4, a hollow working chamber 200 is further disposed in the prefabricated pillar 20;
a working chamber 200 is provided below the foundation ring 40, which is used for the installation or replacement operation of the connection anchor.
In order to construct the pile-beam splicing combined type wind power foundation structure provided by the invention, referring to fig. 5, the invention further provides a construction method of the pile-beam splicing combined type wind power foundation structure, which specifically comprises the following steps:
step S10, completing the fabrication of the prefabricated pillars 20, the prefabricated distribution beams 30, the foundation ring 40, the connection anchors and the fastening nuts 50 in advance outside the construction site (e.g., a factory or other fabrication site) of the wind turbine generator system;
in step S10, the prefabricated columns 20, the prefabricated distribution beams 30, the foundation rings 40, the connection anchors, and the fastening nuts 50 are fabricated by conventional methods such as welding and reinforced concrete casting.
In the invention, it should be noted that the tower is a conventional supporting structure system of the wind generating set, generally a steel cylindrical structure or a prestressed concrete structure, and needs to be transported to a field for use after being manufactured in a factory in advance.
Simultaneously, it still needs to explain, this patent main innovation point is bottom assembled basis, and the tower section of thick bamboo in the patent is wind turbine generator system conventional bearing structure, does not have the novelty, only uses for the structure indication. Generally used together with an upper wind generating set.
Step S20, the prefabricated table posts 20, the prefabricated distribution beams 30, the foundation rings 40, the connecting anchor bolts and the fastening nuts 50 are conveyed to the construction site of the wind generating set;
step S30, uniformly and fixedly arranging a plurality of vertically distributed bottom pile foundations 10 along the circumferential direction in a foundation of a preset tower installation area of a construction site of the wind generating set; presetting a tower drum mounting area foundation in a circular distribution;
step S40, placing the prefabricated pillars 20 on the surface of the center position of the foundation in the preset tower installation area (i.e. the center position of the area surrounded by the plurality of bottom pile foundations 10), and then respectively connecting the inner and outer ends of the plurality of prefabricated distribution beams 30 with the peripheral side walls of the prefabricated pillars 20 and the pile heads 101 at the tops of the plurality of bottom pile foundations 10;
step S50, the foundation ring 40 is fixedly arranged at the top of the prefabricated column 20, and the foundation ring 40 is used for installing and fixing the tower tube 60, so that the construction of the pile-beam splicing combined type wind power foundation structure is completed.
In particular, referring to fig. 1b, the base ring 40 and the bottom flange 601 of the tower 60 have a plurality of bolt holes with the same size and arranged vertically and correspondingly, and the two may be connected into a whole through vertical connecting bolts, which is a conventional bolt connection manner of a tower in the wind power field.
Referring to FIG. 1c, the tower is shown for illustrative purposes only and employs a conventional wind power support structure.
Referring to fig. 3, each prefabricated distribution beam 30 is fixedly connected to the pile head 101 of the top end of the bottom pile foundation 10 by bolts 102.
In the present invention, in step S30, in a specific implementation, the radius of the foundation in the tower installation area is preset to be greater than or equal to the sum of the radial length of the bottom pile foundation 10 and the radius of the prefabricated column 20.
In the present invention, in step S30, specifically, when the bottom pile foundation 10 is not transported to the construction site of the wind turbine generator system in step S20, the bottom pile foundation 10 is fixedly disposed in the foundation of the preset tower installation area by using a drilling and grouting method; the bottom pile foundation 10 is a cast-in-place bored pile.
In the present invention, in step S30, in a concrete implementation, when the prefabricated bottom pile foundation 10 is further transported in step S20, the bottom pile foundation 10 is fixedly disposed in the foundation of the preset tower installation area by adopting a pile driving method (for example, a spiral pile driving method); the bottom pile foundation 10 is a precast concrete pipe pile or a precast steel pipe pile;
in this case, the bottom pile foundation 10 is preferably a screw pile.
In the present invention, the bottom pile foundation 10 may be a cast-in-situ bored pile, a precast concrete pipe pile, or a precast steel pipe pile.
In step S50, in the present invention, the foundation ring 40 is fixed to the prefabricated columns 20 by engaging the connection bolts with the fastening nuts 50, specifically, with respect to the foundation ring 40.
The specific structural design is as follows:
a plurality of first anchor bolt holes 201 are uniformly formed in the top of the prefabricated column 20 along the circumferential direction;
the lower end of the tower tube 60 is fixedly connected with a base ring 40 which is distributed annularly;
the foundation ring 40 is uniformly provided with a plurality of second anchor bolt holes along the circumferential direction;
the plurality of second anchor holes on the foundation ring 40 and the plurality of first anchor holes 201 on the top of the prefabricated column 20 are respectively arranged in an up-down one-to-one correspondence manner;
the specific operation is as follows: a vertically distributed connecting anchor bolt is anchored in each first anchor bolt hole of the prefabricated table post 20, then the connecting anchor bolt sequentially penetrates through the corresponding first anchor bolt hole and the corresponding second anchor bolt hole from bottom to top and then is fixedly connected with a fastening nut 50, and the prefabricated table post 20 and the foundation ring 40 are fixed through the fastening nut 50.
Therefore, the foundation ring 40 can be fixedly installed on the top of the prefabricated columns 20 by the cooperation of the plurality of connection anchors and the plurality of fastening nuts 50.
In the present invention, in step S50, in a concrete implementation, the top of the prefabricated pillar 20 is further provided with a circular ring structure;
the foundation ring 40 is fixedly arranged on the top surface of the circular ring structure at the top of the prefabricated column 20; specifically, the following steps can be also included: the foundation ring 40 is connected and fixed on the circular ring structure of the prefabricated table column through the matching of the connecting anchor bolt and the fastening nut;
in the present invention, in step S50, in a concrete implementation, the top of the pillar 20 is further provided with a circular ring structure;
an anchor plate is also fixedly arranged between the bottom of the circular ring structure and the top of the prefabricated column 20.
Specifically, the following steps can be also included: and the prefabricated table post 20, the anchor plate, the circular ring structure and the foundation ring 40 are fixed through the matching of the connecting anchor bolt and the fastening nut.
Based on the technical scheme, the construction method of the pile-beam splicing combined type wind power foundation structure provided by the invention is characterized in that the construction of the pile-beam splicing combined type wind power foundation structure is completed through the matching of the bottom pile foundation, the prefabricated table column, the prefabricated distribution beam, the foundation ring, the connecting anchor bolt, the fastening nut and the like, and then the installation and the fixation of the tower barrel are performed through the foundation ring 40;
it should be noted that, in step S10, since the prefabricated columns, the prefabricated distribution beams, the foundation rings, the connection anchors, the fastening nuts, and even the prefabricated concrete pipe piles or steel pipe piles or screw piles, etc. are prefabricated in the factory, they are not affected by the weather, the site and the time, so as to effectively ensure the construction period, the quality and the precision, and make full use of the advantages of the site construction and the factory prefabrication, so as to overcome the problems of poor geological conditions, limited transportation or limited land acquisition area in the wind power construction area, and to complete the construction of the wind power foundation structure with high quality.
Therefore, the pile-beam splicing combined type wind power foundation structure and the construction method thereof provided by the invention have the advantages of unique design concept, simple wind power foundation structure, convenience and diversity in manufacturing and construction, can obviously shorten the construction period of the wind power foundation structure, can meet the construction requirements of high speed, economy, greenness, environmental protection and high quality of the wind power foundation structure in wind power generation, and can effectively improve the economic benefit and social benefit of enterprises, so that the pile-beam splicing combined type wind power foundation structure and the construction method thereof have great popularization and wide application value.
The invention provides a wind power foundation structure with a combination of factory prefabrication, site construction and site splicing of partial components and a construction method thereof for a wind power generator set, so that the wind power generator set can complete the construction of the wind power foundation structure quickly, economically, environmentally and in high quality by fully utilizing favorable conditions of site construction and factory prefabrication, thereby improving the economic benefit and social benefit of enterprises and contributing to the sustainable development of social economy.
Compared with the prior art, the pile-beam splicing combined type wind power foundation structure and the construction method thereof have the following beneficial effects:
1. the invention provides a pile-beam splicing combined type wind power foundation structure and a construction method thereof, wherein a bottom pile foundation is arranged in a foundation surrounding a tower installation area in a wind generating set, a prefabricated column is arranged in an area surrounded by the bottom pile foundation, then a prefabricated distribution beam is respectively connected between a pile head of each bottom pile foundation and the side wall of the prefabricated column, and a foundation ring arranged at the upper part of the prefabricated column is fixedly installed through connecting anchor bolts penetrating out of the prefabricated column and matching of fastening nuts, so that the construction and the construction of the pile-beam splicing combined type wind power foundation structure are completed, and the pile-beam splicing combined type wind power foundation structure is used for installing and fixing a tower;
2. according to the pile-beam splicing combined type wind power foundation structure, the prefabricated table columns, the prefabricated distribution beams, the foundation rings, the connecting anchor bolts, the fastening nuts, even the prefabricated concrete pipe piles or the steel pipe piles or the screw piles and the like are prefabricated in a factory, are not influenced by weather, fields, time and the like, the construction period, the quality and the precision can be effectively guaranteed, the favorable conditions of field construction and factory prefabrication are fully utilized through a construction method combining field construction and field splicing combination, the problems of poor geological conditions, limited transportation or limited land acquisition area limit of a wind power construction area are overcome, and the construction of the wind power foundation structure is finished with high quality;
3. the pile-beam splicing combined type wind power foundation structure and the construction method thereof provided by the invention have the advantages that the design concept is unique, the wind power foundation structure is simple in structure and convenient and diverse to manufacture and construct, the construction period of the wind power foundation structure can be obviously shortened, the construction requirements of rapidness, economy, greenness, environmental protection and high quality of the wind power foundation structure in wind power generation can be met, and the economic benefit and social benefit of enterprises can be effectively improved, so that the pile-beam splicing combined type wind power foundation structure has great popularization and application values.
Based on the technical scheme, the wind power foundation structure and the construction method thereof can provide a wind power generator set with a combination of factory prefabrication, site construction and site splicing of partial components, so that the wind power generator set can complete the construction of the wind power foundation structure quickly, economically, environmentally and in high quality by fully utilizing favorable conditions of site construction and factory prefabrication, thereby improving the economic benefit and social benefit of enterprises and contributing to the sustainable development of social economy.
In summary, compared with the prior art, the pile-beam splicing combined wind power foundation structure and the construction method thereof provided by the invention have the advantages that the wind power foundation structure is scientific in structural design, convenient to flexibly and reliably install, high in structural strength, capable of meeting the construction requirements of wind power generation farms of target sites with poor geological conditions, limited transportation or limited land acquisition area, and significant practical significance is achieved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The pile-beam splicing combined type wind power foundation structure is characterized by comprising vertically distributed cylindrical prefabricated table columns (20);
the top center position of the prefabricated table column (20) is used for being vertically and fixedly connected with a tower drum (60);
the peripheral side walls of the prefabricated table columns (20) are uniformly connected with the inner side ends of the prefabricated distribution beams (30) along the circumferential direction;
the bottom surface of the outer side end of each prefabricated distribution beam (30) is respectively connected with a pile head (101) arranged at the top end of a vertically distributed bottom pile foundation (10);
each bottom pile foundation (10) is deeply fixed into a foundation of a preset tower installation area;
the bottom of the prefabricated column (20) is positioned on the surface of the foundation of the preset tower installation area.
2. The pile-beam spliced wind power foundation structure as claimed in claim 1, wherein the predetermined tower installation area foundation is a circularly distributed tower installation area foundation;
the plurality of bottom pile foundations (10) are uniformly distributed along the circumferential direction;
the radius of the foundation of the tower installation area is preset to be larger than or equal to the sum of the radial length of the bottom pile foundation (10) and the radius of the prefabricated column (20).
3. The pile-beam spliced wind power infrastructure according to claim 1, characterized in that each bottom pile foundation (10) is fixed deep into the foundation of a predetermined tower installation area by piling or drilling injection.
4. The pile-beam splicing combined type wind power foundation structure according to claim 1, wherein a plurality of first anchor bolt holes (201) are uniformly formed in the top of the prefabricated column (20) along the circumferential direction;
the lower end of the tower barrel (60) is fixedly connected with a base ring (40) which is distributed annularly;
the foundation ring (40) is uniformly provided with a plurality of second anchor bolt holes along the circumferential direction;
a plurality of second anchor bolt holes on the foundation ring (40) and a plurality of first anchor bolt holes (201) on the top of the prefabricated table column (20) are respectively arranged in a one-to-one up-and-down manner;
wherein, in every first anchor keyhole of prefabricated styletable (20), the anchor has a vertical distribution's connection crab-bolt, and this connection crab-bolt passes corresponding first anchor keyhole and second anchor keyhole from down up in proper order after, with a fastening nut (50) fixed connection, fixes through fastening nut (50) prefabricated styletable (20) and basic ring (40).
5. The pile-beam spliced wind power infrastructure of claim 1, wherein the inner end of each prefabricated distribution beam (30) is vertically connected with the peripheral side wall of the prefabricated column (20);
each prefabricated distribution beam (30) comprises a column connecting part (31) and a pile foundation connecting part (32) which are fixedly connected together;
wherein, the shape of the column connecting part (31) is rectangular;
the shape of the pile foundation connecting part (32) is a right trapezoid;
the inner side of the column connecting part (31) is connected with the peripheral side wall of the prefabricated column (20);
the outer end bottom surface of the pile foundation connecting part (32) is correspondingly connected with a pile head (101) arranged at the top end of one bottom pile foundation (10).
6. The pile-beam spliced combined wind power foundation structure of claim 1, wherein the prefabricated distribution beam (30) is a plate beam made by welding profile steels or a plate beam cast by reinforced concrete;
the bottom pile foundation (10) is a cast-in-situ bored pile, a precast concrete pipe pile or a precast steel pipe pile;
the bottom pile foundation (10) is a spiral pile;
and the prefabricated platform column (20) is a concrete pipe column or a steel pipe column.
7. A construction method of the pile-beam spliced combined type wind power foundation structure as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
step S10, manufacturing the prefabricated table posts (20), the prefabricated distribution beams (30), the foundation ring (40), the connecting anchor bolts and the fastening nuts (50) outside the construction site of the wind generating set in advance;
step S20, the prefabricated table posts (20), the prefabricated distribution beams (30), the foundation ring (40), the connecting anchor bolts and the fastening nuts (50) are conveyed to the construction site of the wind generating set;
step S30, uniformly and fixedly arranging a plurality of vertically distributed bottom pile foundations 10 along the circumferential direction in a foundation of a preset tower installation area of a construction site of the wind generating set; presetting a tower drum mounting area foundation in a circular distribution;
step S40, placing the prefabricated table post (20) on the surface of the center position of the foundation of the preset tower installation area, and then respectively connecting the inner side and the outer side of the plurality of prefabricated distribution beams (30) with the peripheral side walls of the prefabricated table post (20) and pile heads (101) at the tops of the plurality of bottom pile foundations (10);
and S50, fixedly arranging the foundation ring (40) at the top of the prefabricated table column (20), wherein the foundation ring (40) is used for installing and fixing the tower drum (60), so that the construction of the pile-beam splicing combined type wind power foundation structure is completed.
8. The construction method as claimed in claim 7, wherein in step S30, the radius of the foundation of the tower installation area is preset to be greater than or equal to the sum of the radial length of the bottom pile foundation (10) and the radius of the prefabricated column (20);
in step S30, when the bottom pile foundation (10) is not conveyed to the construction site of the wind generating set in step S20, the bottom pile foundation (10) is fixedly arranged in a foundation of a preset tower installation area in a drilling and pouring mode; the bottom pile foundation (10) is a cast-in-situ bored pile;
in step S30, when the prefabricated bottom pile foundation (10) is further transported in step S20, the bottom pile foundation (10) is fixedly arranged in the foundation of the preset tower installation area by adopting a pile driving mode; the bottom pile foundation (10) is a precast concrete tubular pile or a precast steel tubular pile.
9. The construction method as claimed in claim 7, wherein, in step S50, the foundation ring (40) is fixedly connected to the prefabricated columns (20) by engaging the connecting anchor with the fastening nut (50) with respect to the foundation ring (40);
the specific structural design is as follows:
a plurality of first anchor bolt holes (201) are uniformly formed in the top of the prefabricated table column (20) along the circumferential direction;
the lower end of the tower barrel (60) is fixedly connected with a base ring (40) which is distributed annularly;
the foundation ring (40) is uniformly provided with a plurality of second anchor bolt holes along the circumferential direction;
a plurality of second anchor bolt holes on the foundation ring (40) and a plurality of first anchor bolt holes (201) on the top of the prefabricated table column (20) are respectively arranged in a one-to-one up-and-down manner;
the specific operation is as follows: a connecting anchor bolt which is vertically distributed is anchored in each first anchor bolt hole of the prefabricated table post (20), then the connecting anchor bolt sequentially penetrates through the corresponding first anchor bolt hole and the corresponding second anchor bolt hole from bottom to top and then is fixedly connected with a fastening nut (50), and the prefabricated table post (20) and the foundation ring (40) are fixed through the fastening nut (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010815964.7A CN111926851A (en) | 2020-08-14 | 2020-08-14 | Pile-beam splicing combined type wind power foundation structure and construction method thereof |
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| CN202010815964.7A CN111926851A (en) | 2020-08-14 | 2020-08-14 | Pile-beam splicing combined type wind power foundation structure and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439033A (en) * | 2022-03-08 | 2022-05-06 | 中国石油大学(华东) | Reinforced concrete self-sinking umbrella-shaped mudflat wind power foundation and installation method thereof |
| CN115125987A (en) * | 2022-07-11 | 2022-09-30 | 天津大学 | Land wind power foundation structure with capacity expansion capability and capacity expansion construction method thereof |
-
2020
- 2020-08-14 CN CN202010815964.7A patent/CN111926851A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439033A (en) * | 2022-03-08 | 2022-05-06 | 中国石油大学(华东) | Reinforced concrete self-sinking umbrella-shaped mudflat wind power foundation and installation method thereof |
| CN115125987A (en) * | 2022-07-11 | 2022-09-30 | 天津大学 | Land wind power foundation structure with capacity expansion capability and capacity expansion construction method thereof |
| CN115125987B (en) * | 2022-07-11 | 2024-06-11 | 天津大学 | Land wind power foundation structure with capacity expansion capability and capacity expansion construction method thereof |
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