CN116733684A - Concrete-coated double-corrugated steel plate concrete combined tower barrel and construction method - Google Patents
Concrete-coated double-corrugated steel plate concrete combined tower barrel and construction method Download PDFInfo
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Abstract
The utility model provides a outsourcing concrete-dual ripple steel sheet concrete combination tower section of thick bamboo and construction method, includes the section of thick bamboo, and the section of thick bamboo is connected through prestressing force bending bolt by a plurality of outsourcing concrete-dual ripple steel sheet concrete combination tower section of thick bamboo units along the hoop, and adjacent section of thick bamboo passes through L shape ring flange and high strength bolted connection fastening. The combined tower cylinder unit comprises a corrugated inner steel plate, a corrugated outer steel plate, prestressed reinforcement, outer concrete, interlayer concrete, an upper end plate and a lower end plate. The tower can be flexibly designed from bottom to top according to the requirement, the upper tower section can be selected to be not filled with interlayer concrete, the dead weight of the tower structure can be reduced, and the lifting is convenient. The application improves the bearing capacity, reduces the cross section size of the component, has good ductility and energy consumption capacity, improves the bending resistance and crack resistance of the tower barrel, and ensures the rigidity and stability of the tower barrel. The combined tower barrel is prefabricated in a piece-by-piece mode, transported in a piece-by-piece mode and assembled on site, and construction is efficient. The height of the tower drum of the fan can be greatly improved, and the low wind speed area development requirement is met.
Description
Technical Field
The application belongs to the technical field of fan tower design, and particularly relates to an outsourcing concrete-dual-corrugated steel plate concrete combined tower and a construction method.
Background
The tower is used as an important bearing member in the fan, plays a role of connecting the engine room and the foundation, supports the wind driven generator capturing wind energy at a favorable height to achieve the most economical and safe energy utilization, and the importance of the tower is increasingly outstanding with the increase of the capacity and the height of the fan. At present, a fan tower drum is developed to a high-power high tower drum, the joint of the traditional concrete tower drum needs on-site grouting maintenance, the construction process is more, the installation period is longer, and the weight of the concrete tower drum is increased exponentially after being higher than 100 meters, so that the self weight of the tower drum is larger, the economical efficiency is poor, and the use requirement is difficult to meet.
Therefore, the novel tower barrel with better performance and better economy is developed, and has important significance for fully developing and utilizing wind energy resources.
Disclosure of Invention
In order to overcome the defects of the prior art, the application aims to provide an externally-wrapped concrete-dual-corrugated steel plate concrete combined tower and a construction method thereof, so as to solve the problems of larger dead weight, lower economic performance and the like of the traditional concrete tower.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
the concrete-coated double-corrugated steel plate concrete combined tower barrel is formed by jointing a plurality of barrel sections along the vertical direction, the barrel sections are formed by connecting a plurality of concrete-coated double-corrugated steel plate concrete combined tower barrel units along the circumferential direction through prestress bending bolts, and the upper barrel sections and the lower barrel sections which are adjacent are connected and fastened through L-shaped flanges;
the outer-cladding concrete-dual-corrugated steel plate concrete combined tower cylinder unit comprises a corrugated inner steel plate, a corrugated outer steel plate, prestressed steel bars, outer-cladding concrete, an upper end plate and a lower end plate, wherein the corrugated inner steel plate, the corrugated outer steel plate and the outer-cladding concrete form a cavity;
adjacent externally-wrapped concrete-dual-corrugated steel plate concrete combined tower barrel units are connected into a whole along the annular direction through prestressed bent bolts to form a barrel section; filling interlayer concrete in the cavities of the outer-wrapping concrete-dual-corrugated steel plate concrete combined tower barrel units of the barrel sections;
along vertical direction, adjacent section of thick bamboo is connected through L shape ring flange and high strength bolt, constitutes the combination tower section of thick bamboo.
In one embodiment, the corrugated inner steel plates and the corrugated outer steel plates are symmetrically distributed along the center of the section of the cylinder wall of the cylinder section and have the same radian, the corrugated inner steel plates and the corrugated outer steel plates are respectively arranged at 50+/-5 mm away from the inner wall and the outer wall of the tower cylinder, and the axial direction of the corrugations is arranged along the vertical direction of the cylinder section.
In one embodiment, the waveforms of the corrugated inner steel plate and the corrugated outer steel plate are sine waveforms, the corrugations are wide corrugations, the wave crest length is twice as long as the wave trough, the wave crest length is 100 mm-300 mm, the wave fold angle is 45-60 degrees, and the ratio of the wave height to the wave length is 0.1-0.2.
In one embodiment, the corrugated inner steel plate and the corrugated outer steel plate are welded with a plurality of pegs which are uniformly distributed along the circumferential direction and extend into the outer-covered concrete; the corrugated inner steel plate and the corrugated outer steel plate are uniformly provided with a plurality of preformed holes along the circumferential direction and are connected through split bolts; the studs and the split bolts are vertically arranged at intervals.
In one embodiment, prestressed reinforcement holes are formed in the outer-packed concrete, prestressed reinforcement is arranged in the vertical direction of the cylinder section, and the prestressed reinforcement is anchored on the upper end plate and the lower end plate of the outer-packed concrete-double corrugated steel plate concrete combined tower cylinder unit.
In one embodiment, square bolt grooves for connecting adjacent tower barrel units in a circumferential installation mode are formed in two sides of the outer-wrapping concrete-double-corrugated steel plate concrete combined tower barrel unit, and bolt holes are reserved in the bolt grooves.
In one embodiment, the outer coating concrete is ultra-high performance concrete or self-compacting concrete, the interlayer concrete is common concrete, the tower barrel can be flexibly designed from bottom to top according to requirements, the upper tower barrel section can be not filled with the interlayer concrete, and the cavity of the outer coating concrete-dual-corrugated steel plate concrete combined barrel unit of the barrel section at the lower part of the combined tower barrel can be filled only to form the outer coating concrete-dual-corrugated steel plate hollow concrete combined tower barrel.
In one embodiment, the L-shaped flange plate is formed by welding an annular connecting plate, an annular flange plate and rib plates, the annular flange plate is provided with reserved holes corresponding to high-strength bolts, all sections of the L-shaped flange plate are assembled in a segmented mode along the annular direction, and adjacent sections of rib plates are welded.
In one embodiment, the L-shaped flanges are welded to the lower end plate of the upper barrel section and the upper end plate of the lower barrel section, respectively, and are connected with high strength bolts.
The application also provides a construction method of the externally-wrapped concrete-dual-corrugated steel plate concrete combined tower, which comprises the following steps:
1) The steel plate is processed into a corrugated inner steel plate and a corrugated outer steel plate, and is rolled and bent to process an L-shaped flange;
2) Welding studs on the outer sides of the corrugated inner steel plates and the corrugated outer steel plates and connecting the corrugated inner steel plates and the corrugated outer steel plates through split bolts, reserving prestressed reinforcement holes, pouring outer wrapping concrete, reserving square bolt grooves at two ends, pouring sandwich concrete, welding an upper end plate and a lower end plate, tensioning the prestressed reinforcement, and completing construction of an outer wrapping concrete-dual corrugated steel plate concrete combined tower cylinder unit, wherein L-shaped flanges are respectively welded on the lower end plate of the upper tower cylinder section and the upper end plate of the lower tower cylinder section;
3) And transporting the prefabricated concrete-double corrugated steel plate concrete combined tower barrel units to the site, connecting the prefabricated concrete-double corrugated steel plate concrete combined tower barrel units in the circumferential direction through prestressed bending bolts, and connecting adjacent barrel sections through L-shaped flanges and high-strength bolts to form the combined tower barrel.
Compared with the prior art, the application has the beneficial effects that:
1) Convenient construction
The barrel section of the combined tower barrel is formed by a plurality of concrete-coated double-corrugated steel plate concrete combined tower barrel units along the circumferential direction, the split prefabrication mode can be used for carrying out batch standardized construction production and maintenance, prefabrication in factories and field assembly can be carried out, the use of large-scale equipment on a construction site is reduced, and the combined tower barrel is convenient to transport and stack on the construction site. The tower cylinder is connected in the circumferential direction through the prestressed bending bolt, and is vertically connected through the ring flange, and compared with the traditional concrete tower cylinder, the grouting connection is adopted, so that the construction period is shortened, and the installation is convenient.
2) Performance enhancement
The combined tower has good stability, high bearing capacity and good fatigue resistance. And the construction quality can be ensured by segment prefabrication. Compared with a flat steel plate, the built-in corrugated steel plate increases the contact area between the steel plate and concrete, and has better combined effect. Compared with the traditional concrete tower section, the steel content of the combined tower section is improved, the section of a component can be reduced, the bearing capacity is improved, and the combined tower section has good ductility and energy consumption capacity. The whole tower barrel is in a compression state by adopting the prestressed tendons, so that the bending resistance and the crack resistance of the tower barrel are greatly improved, and the rigidity and the stability of the tower barrel are ensured. The tower can be flexibly designed from bottom to top according to the requirement, the upper tower section can be not filled with interlayer concrete, and the outer-covered concrete-double corrugated steel plate hollow concrete combined tower can be formed, so that the dead weight of the tower structure can be reduced, and the lifting is convenient. May be used in more scenarios.
3) Good economical efficiency
The combined tower barrel is prefabricated in a piece-by-piece mode, the number of templates can be reduced, the templates can be reused, and the cost is reduced. And the transportation cost is saved by the transportation in the slicing way. And the construction efficiency is improved and the construction cost is reduced due to the on-site assembly. The combined tower is excellent in overall performance, and the maintenance frequency is reduced, so that the later operation and maintenance cost is reduced. The outer-packed concrete adopts ultra-high performance concrete, self-compacting concrete and the like, and the interlayer concrete is common concrete, so that the material cost is reduced.
In general, the externally-coated concrete-dual-corrugated steel plate concrete combined tower is adopted, so that the stability is good, the bearing capacity is high, and the fatigue resistance is good. Compared with the traditional concrete tower section, the steel content of the built-in corrugated steel plate is increased, the bearing capacity is improved, the section size of the component is reduced, and the concrete tower section has good ductility and energy consumption capacity. The prestressed tendons are adopted, so that the bending resistance and the crack resistance of the tower barrel are greatly improved, and the rigidity and the stability of the tower barrel are ensured. The tower can be flexibly designed from bottom to top according to the requirement, and the upper tower section can be filled with no interlayer concrete to form the outer-covered concrete-dual-corrugated steel plate hollow concrete combined tower. The combined tower barrel is prefabricated in a piece-by-piece mode, transported in a piece-by-piece mode and assembled on site, so that economy is good, and construction is efficient. The height of the fan tower can be greatly improved, the development requirement of a low wind speed area is met, and the method has good application prospect.
Drawings
FIG. 1 is a cross-sectional view of an encased concrete-dual corrugated steel sheet concrete composite tower cell of the present application.
FIG. 2 is an overall schematic view of the encased concrete-dual corrugated steel plate concrete composite tower of the present application.
FIG. 3 is an overall schematic of the encased concrete-dual corrugated steel sheet concrete composite tower unit of the present application.
Fig. 4 is a schematic view of the splicing of the concrete-coated double corrugated steel plate concrete combined tower cylinder units of the application.
Fig. 5 is a schematic view of the ring groove rivet of the present application.
Icon: 1-a barrel section; 2-an outer-coated concrete-dual-corrugated steel plate concrete combined tower barrel unit; 3-pre-stressing the bent bolt; 4-L-shaped flange plates; 5-corrugated inner steel sheet; 6-corrugated outer steel sheet; 7-prestress steel bars; 8-coating concrete; 9-interlayer concrete; 10-an upper end plate; 11-a lower end plate; 12-high strength bolts; 13-pegs; 14-a split bolt; 15-square bolt slots; 16-an annular connecting plate; 17-an annular flange plate; 18-rib plates; 19-ring groove rivet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the product is conventionally put in use, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore, should not be construed as limiting the present application.
As described above, the joint of the traditional concrete tower needs on-site grouting maintenance, the construction process is more, the installation period is longer, and the weight of the concrete tower is increased exponentially after the concrete tower is higher than 100 meters, so that the self weight of the concrete tower is larger, the economical efficiency is worse, and the use requirement is difficult to meet. Therefore, the novel tower barrel with better performance and better economy is developed, and has important significance for fully developing and utilizing wind energy resources.
Based on the construction method, the application provides the externally-coated concrete-dual-corrugated steel plate concrete combined tower barrel and the construction method, which have the advantages of good stability, high bearing capacity and good fatigue resistance. Compared with the traditional concrete tower section, the steel content of the built-in corrugated steel plate is increased, the bearing capacity is improved, the section size of the component is reduced, and the concrete tower section has good ductility and energy consumption capacity. The prestressed tendons are adopted, so that the bending resistance and the crack resistance of the tower barrel are greatly improved, and the rigidity and the stability of the tower barrel are ensured. The tower barrel can be flexibly designed from bottom to top according to the requirement, and the upper barrel section 1 can be filled with no interlayer concrete to form the outer-covered concrete-double corrugated steel plate hollow concrete combined tower barrel. The combined tower barrel is prefabricated in a piece-by-piece mode, transported in a piece-by-piece mode and assembled on site, so that economy is good, and construction is efficient. The height of the tower drum of the fan can be greatly improved, the low wind speed region development requirement is met, and the high wind speed region development device has good application prospect and is particularly suitable for tower drums higher than 100 meters.
Specifically, referring to fig. 1 to 5, the combined tower drum of the present application comprises a drum section 1, the drum section 1 is connected in the circumferential direction by a plurality of concrete-coated double corrugated steel plate concrete combined tower drum units 2 through prestressed bending bolts 3, and the upper and lower adjacent drum sections 1 are connected and fastened through L-shaped flanges 4.
The encased concrete-dual corrugated steel plate concrete combined tower cylinder unit 2 comprises a corrugated inner steel plate 5, a corrugated outer steel plate 6, prestressed steel bars 7, encased concrete 8, an upper end plate 10 and a lower end plate 11, wherein the corrugated inner steel plate 5, the corrugated outer steel plate 6 and the encased concrete 8 form a cavity. The exterior concrete 8 is filled outside the cavity, i.e., inside the corrugated inner steel plate 5 and outside the corrugated outer steel plate 6, respectively. The interlayer concrete 9 is used to fill the cavity, i.e. between the corrugated inner steel plate 5 and the corrugated outer steel plate 6. In the present application, the interlayer concrete 9 may be filled only in the cavity of the exterior concrete-dual corrugated steel plate concrete combined tower barrel unit 2 of the partial barrel section 1.
Adjacent externally-coated concrete-dual-corrugated steel plate concrete combined tower barrel units 2 are connected into a whole along the circumferential direction through prestressed bent bolts 3 to form barrel sections 1.
Vertically, adjacent barrel sections 1 are connected through an L-shaped flange 4 and high-strength bolts 12 to form a combined tower barrel.
According to the structure, the corrugated steel plate can greatly increase the contact area with concrete, and meanwhile, the steel content of the section of the tower barrel is improved, so that the bearing capacity of the tower barrel is improved. The combined tower barrel obtained by the combination mode has higher overall stability and bearing capacity, and the construction quality and efficiency can be ensured by segmental prefabrication.
In one embodiment of the application, the corrugated inner steel plate 5 and the corrugated outer steel plate 6 are symmetrically distributed along the center of the section of the cylinder wall of the cylinder section 1 and have the same radian, are respectively arranged at 50+/-5 mm away from the inner wall and the outer wall of the tower, and the corrugations are vertically arranged along the cylinder section 1.
The distribution form of the corrugated inner steel plate 5 and the corrugated outer steel plate 6 of the embodiment can enable the corrugated inner steel plate 5 and the corrugated outer steel plate 6 to be distributed symmetrically along the center of the section of the cylinder wall of the cylinder section 1 and have the same radian, so that the arrangement of the high-strength bolts 12 is convenient, the high-strength bolts 12 are used for connecting the corrugated inner steel plate 5 and the corrugated outer steel plate 6, the integrity of the corrugated inner steel plate 5 and the corrugated outer steel plate 6 is guaranteed, and the components are stressed jointly. The vertical arrangement of the corrugation better utilizes the accordion effect of the corrugated steel plate and has larger out-of-plane rigidity.
In one embodiment of the present application, the waveforms of the corrugated inner steel plate 5 and the corrugated outer steel plate 6 are sinusoidal waveforms, the waveforms are wide waves, the wave crest length is twice as long as the wave trough, the wave crest length can be 100 mm-300 mm, the wave crest angle is 45-60 degrees, and the ratio of the wave height to the wavelength is 0.1-0.2.
By adopting wide corrugation, the flexibility of the corrugated steel plate can be increased, the fatigue life is prolonged, the elastic rigidity of the wave is greatly reduced, and the safety strength and stability are improved. The method can obtain better bearing capacity, ductility and energy consumption capacity, reduces the steel consumption on the premise of ensuring the performance of the tower, and has better economic performance.
In one embodiment of the application, the studs 13 are welded on the corrugated inner steel plate 5 and the corrugated outer steel plate 6, and are uniformly distributed along the circumferential direction; the corrugated inner steel plate 5 and the corrugated outer steel plate 6 are uniformly provided with preformed holes along the circumferential direction and are connected through a split bolt 14; the studs 13 are vertically spaced from the split bolts 14.
In this embodiment, can prevent through setting up peg 13 that inside and outside steel sheet from taking place local buckling, improve the collaborative work ability of steel sheet 5 in the ripple simultaneously, steel sheet 6 outside the ripple and intermediate layer concrete 9, steel sheet 5 and steel sheet 6 outside the ripple are connected to tie bolt 14, guarantee steel sheet 5 in the ripple and steel sheet 6 wholeness outside the ripple, improve stability, make the component jointly receive the effect, peg 13 and tie bolt 14 follow vertical interval arrangement, make peg 13 and tie bolt 14 follow vertical evenly distributed, guarantee the connection of steel sheet 5 in the ripple and steel sheet 6 outside the ripple, improve steel sheet and outsourcing concrete 8 coordinated work ability, the cross-section atress is even.
In one embodiment of the present application, the concrete 8 is internally provided with prestressed reinforcement holes, and prestressed reinforcement 7 is arranged along the vertical direction of the cylinder section 1 and anchored to the upper end plate 10 and the lower end plate 11 of the concrete-encased double corrugated steel plate concrete combined tower cylinder unit 2, respectively.
In the embodiment, the whole tower barrel is in a pressed state by the prestressed reinforcement 7, so that the bending resistance and the crack resistance of the tower barrel are improved, and the rigidity and the stability of the tower barrel are ensured.
In one embodiment of the application, square bolt grooves 15 for installing and connecting adjacent tower barrel units in a circumferential direction are formed in two sides of the outer-wrapping concrete-double corrugated steel plate concrete combined tower barrel unit 2, and bolt holes are reserved in the bolt grooves.
In this embodiment, the arrangement of the square bolt grooves 15 provides a construction space for the connection of the prestressed bending bolts 3 of the adjacent outsourcing concrete-dual corrugated steel plate concrete combined tower cylinder units 2, and the square bolt grooves 15 can finish construction in factories and are simple and convenient to connect.
In one embodiment of the present application, the external coating concrete 8 may be ultra-high performance concrete, self-compacting concrete, etc., the interlayer concrete 9 is common concrete, the tower barrel may be flexibly designed from bottom to top according to the requirement, the upper tower barrel section 1 may not be filled with the interlayer concrete 9, and the cavity of the external coating concrete-dual-corrugated steel plate concrete combined barrel unit 2 of the barrel section 1 at the lower part of the combined tower barrel may be filled only to form the external coating concrete-dual-corrugated steel plate hollow concrete combined tower barrel. That is, one form of the present application is filled entirely with the sandwich concrete 9, and the other form is solid at the bottom and hollow at the top.
The mode is selected in the embodiment, and is mainly suitable for the wind power tower with lower structural height, and has the advantages that the upper tower section 1 has lower requirements on bearing capacity, can be filled with interlayer concrete 9, can be flexibly designed according to the height of the tower, can lighten the dead weight of the tower structure, is convenient to hoist and improves the economic performance of the tower.
In one embodiment of the present application, the L-shaped flange 4 is welded by an annular connecting plate 16, an annular flange plate 17 and rib plates 18, the annular flange plate 17 is provided with preformed holes corresponding to the high-strength bolts 12, each section of the L-shaped flange 4 is assembled in a segmented manner along the circumferential direction, and adjacent sections of rib plates are welded.
Compared with the traditional connecting method, the method has the advantages that only high-strength bolts 12 are needed to be connected on site, welding operation and wet operation are not needed, and the construction is simple and convenient. The L-shaped flange plate is prefabricated in a factory, has regular end faces, good welding quality, high connection strength and good fatigue performance, is easy to ensure node quality, and has good stability and safety. The annular connecting plate 16 and the annular flange plate 17 are used for connecting adjacent outsourcing concrete-double corrugated steel plate concrete combined tower barrel units 2, and the rib plates 18 increase the rigidity of the flange and reduce the deformation of flange joints.
In one embodiment of the present application, the L-shaped flange 4 is welded to the lower end plate 10 of the upper tower section 1 and the upper end plate 11 of the lower tower section 1, respectively, and is connected by high strength bolts 12, and the high strength bolts 12 may be replaced by ring groove rivets 19 of the same specification for connection of adjacent tower sections 1.
In the connection mode of the embodiment, the tower barrels are connected in the circumferential direction through the prestressed bending bolts 3 and are vertically connected through the L-shaped flange plates 4, so that compared with the traditional concrete tower barrels, the grouting connection mode is adopted, the construction period is shortened, and the installation is convenient. The high-strength bolt 12 can be replaced by a ring groove rivet 19 with the same specification, and has the advantages of high clamping force, stable performance, good anti-loosening effect and the like.
The application discloses an externally-coated concrete-dual-corrugated steel plate concrete combined tower, which comprises the following construction steps:
1) The steel plates are processed into a corrugated inner steel plate 5 and a corrugated outer steel plate 6, and are rolled and bent to process an L-shaped flange 4;
2) The outer sides of the corrugated inner steel plates 5 and the corrugated outer steel plates 6 are welded with bolts 13 and are connected through split bolts 14, prestressed reinforcement holes are reserved, the outer cover concrete 8 is poured, square bolt grooves 15 are reserved at two ends, the interlayer concrete 9 is poured, the upper end plate 10 and the lower end plate 11 are welded, the prestressed reinforcement 7 is stretched, the construction of the outer cover concrete-double corrugated steel plate concrete combined tower barrel unit 2 is completed, and the L-shaped flange 4 is welded to the lower end plate 11 of the upper tower barrel section 1 and the upper end plate 10 of the lower tower barrel section 1 respectively;
3) The prefabricated concrete-double corrugated steel plate concrete combined tower barrel unit 2 is transported to the site, connected in the circumferential direction through the prestressed bent bolts 3, and the adjacent barrel sections 1 are connected through the L-shaped flange 4 and the high-strength bolts 12 to form a combined tower barrel.
In summary, the application provides an externally-coated concrete-dual-corrugated steel plate concrete combined tower barrel and a construction method thereof, wherein the externally-coated concrete-dual-corrugated steel plate concrete combined tower barrel comprises barrel sections, the barrel sections are connected in the circumferential direction by a plurality of externally-coated concrete-dual-corrugated steel plate concrete combined tower barrel units through prestressed bent bolts, and adjacent barrel sections 1 are connected and fastened through L-shaped flanges and high-strength bolts. The outer-coated concrete-dual-corrugated steel plate concrete combined tower cylinder unit comprises a corrugated inner steel plate, a corrugated outer steel plate, prestressed steel bars, outer-coated concrete, sandwich concrete, an upper end plate and a lower end plate, wherein the corrugated steel plates are welded with studs and are connected through split bolts. The application adopts the externally-coated concrete-dual-corrugated steel plate concrete combined tower barrel, and has good stability, high bearing capacity and good fatigue resistance. Compared with the traditional concrete tower section, the steel content of the built-in corrugated steel plate is increased, the bearing capacity is improved, the section size of the component is reduced, and the concrete tower section has good ductility and energy consumption capacity. The prestressed tendons are adopted, so that the bending resistance and the crack resistance of the tower barrel are greatly improved, and the rigidity and the stability of the tower barrel are ensured. The tower can be flexibly designed from bottom to top according to the requirement, and the upper tower section 1 can be filled with no interlayer concrete to form an outsourcing concrete-dual-corrugated steel plate hollow concrete combined tower. The combined tower barrel is prefabricated in a piece-by-piece mode, transported in a piece-by-piece mode and assembled on site, so that economy is good, and construction is efficient. The height of the fan tower can be greatly improved, the development requirement of a low wind speed area is met, and the method has good application prospect.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The concrete-coated double-corrugated steel plate concrete combined tower is characterized by being formed by jointing a plurality of barrel sections (1) along the vertical direction, wherein the barrel sections (1) are formed by connecting a plurality of concrete-coated double-corrugated steel plate concrete combined tower barrel units (2) along the circumferential direction through prestressed bending bolts (3), and the barrel sections (1) adjacent to each other at the upper part and the lower part are fixedly connected through L-shaped flanges (4);
the outer-cladding concrete-double corrugated steel plate concrete combined tower barrel unit (2) comprises a corrugated inner steel plate (5), a corrugated outer steel plate (6), prestressed steel bars (7), outer-cladding concrete (8), an upper end plate (10) and a lower end plate (11), wherein the corrugated inner steel plate (5), the corrugated outer steel plate (6) and the outer-cladding concrete (8) form a cavity;
adjacent externally-wrapped concrete-dual-corrugated steel plate concrete combined tower barrel units (2) are connected into a whole through prestressed bent bolts (3) along the circumferential direction to form a barrel section (1); filling interlayer concrete (9) in the cavities of the outer-wrapping concrete-dual-corrugated steel plate concrete combined tower barrel units (2) of the barrel sections (1);
along the vertical direction, adjacent barrel sections (1) are connected through an L-shaped flange plate (4) and high-strength bolts (12) to form a combined tower barrel.
2. The concrete-double corrugated steel plate concrete combined tower drum which is externally wrapped according to claim 1, wherein the corrugated inner steel plates (5) and the corrugated outer steel plates (6) are symmetrically distributed along the center of the section of the drum wall of the drum section (1) and have the same radian, are respectively arranged at 50+/-5 mm away from the inner wall and the outer wall of the tower drum, and the axial direction of the corrugations is vertically arranged along the drum section (1).
3. The concrete-encased double corrugated steel plate concrete combined tower according to claim 2, wherein the waveforms of the corrugated inner steel plate (5) and the corrugated outer steel plate (6) are sinusoidal waveforms, the corrugations are wide corrugations, the lengths of the peaks are twice as long as the troughs, the lengths of the peaks are 100 mm-300 mm, the angle of the corrugation is 45-60 degrees, and the ratio of the wave height to the wavelength is 0.1-0.2.
4. The concrete-outside-cladding double-corrugated steel plate concrete combined tower according to claim 1, wherein a plurality of pegs (13) are welded on the corrugated inner steel plate (5) and the corrugated outer steel plate (6), and the pegs (13) are uniformly distributed along the circumferential direction and extend into the concrete (8); the corrugated inner steel plate (5) and the corrugated outer steel plate (6) are uniformly provided with a plurality of preformed holes along the circumferential direction and are connected through split bolts (14); the studs (13) and the split bolts (14) are arranged at intervals vertically.
5. The concrete-double corrugated steel plate concrete combined tower drum of claim 1, wherein prestressed reinforcement holes are formed in the concrete-outside coating (8), prestressed reinforcements (7) are arranged in the vertical direction of the drum segment (1), and the prestressed reinforcements (7) are anchored on an upper end plate (10) and a lower end plate (11) of the concrete-outside coating double corrugated steel plate concrete combined tower drum unit (2).
6. The concrete-coated double corrugated steel plate concrete combined tower drum according to claim 1, wherein square bolt grooves (15) for connecting adjacent tower drum units in a circumferential installation mode are formed in two sides of the concrete-coated double corrugated steel plate concrete combined tower drum unit (2), and bolt holes are reserved in the bolt grooves.
7. The externally-coated concrete-dual-corrugated steel plate concrete combined tower according to claim 1, wherein the externally-coated concrete (8) is ultra-high performance concrete or self-compacting concrete, the interlayer concrete (9) is common concrete, and the cavity of the externally-coated concrete-dual-corrugated steel plate concrete combined tower unit (2) of the lower section (1) of the combined tower is filled only to form the externally-coated concrete-dual-corrugated steel plate hollow concrete combined tower.
8. The externally-wrapped concrete-dual-corrugated steel plate concrete combined tower according to claim 1, wherein the L-shaped flange plate (4) is formed by welding an annular connecting plate (16), an annular flange plate (17) and rib plates (18), reserved holes corresponding to high-strength bolts (12) are formed in the annular flange plate (17), all sections of the L-shaped flange plate (4) are assembled in a segmented mode along the annular direction, and adjacent sections of rib plates are welded.
9. The concrete-encased double corrugated steel plate concrete combined tower according to claim 1, characterized in that the L-shaped flange plate (4) is welded to the lower end plate (10) of the upper section (1) and the upper end plate (11) of the lower section (1), respectively, and connected with high strength bolts (12).
10. An encased concrete-dual corrugated steel sheet concrete composite tower as claimed in any one of claims 1 to 9 comprising:
1) The steel plate is processed into a corrugated inner steel plate (5) and a corrugated outer steel plate (6) and is rolled and bent, and an L-shaped flange plate (4) is processed;
2) The method comprises the steps of welding studs (13) on the outer sides of corrugated inner steel plates (5) and corrugated outer steel plates (6) and connecting the corrugated inner steel plates and the corrugated outer steel plates through split bolts (14), reserving prestressed reinforcement holes and pouring outsourcing concrete (8), reserving square bolt grooves (15) at two ends, pouring sandwich concrete (9), welding an upper end plate (10) and a lower end plate (11), tensioning prestressed reinforcement (7), and completing construction of the outsourcing concrete-double corrugated steel plate concrete combined tower cylinder unit (2), wherein L-shaped flanges (4) are welded on the lower end plate (11) of an upper tower cylinder section (1) and the upper end plate (10) of the lower tower cylinder section (1) respectively;
3) The prefabricated concrete-double corrugated steel plate concrete combined tower barrel unit (2) is transported to the site, connected with each other through prestressed bent bolts (3) along the circumferential direction, and adjacent barrel sections (1) are connected with each other through L-shaped flanges (4) and high-strength bolts (12) to form a combined tower barrel.
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| CN119288769A (en) * | 2024-11-26 | 2025-01-10 | 贵州大学 | A fully assembled wind power tower bolt connection structure and construction method thereof |
| CN121701012A (en) * | 2026-02-12 | 2026-03-20 | 湖南科技大学 | Concrete ring piece of wind turbine generator and design method thereof |
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| CN116733684B (en) | 2025-06-20 |
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