CN210621736U - Multi-cylinder reinforced concrete combined foundation structure - Google Patents
Multi-cylinder reinforced concrete combined foundation structure Download PDFInfo
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- CN210621736U CN210621736U CN201920992332.0U CN201920992332U CN210621736U CN 210621736 U CN210621736 U CN 210621736U CN 201920992332 U CN201920992332 U CN 201920992332U CN 210621736 U CN210621736 U CN 210621736U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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Abstract
The utility model belongs to the technical field of ocean engineering's foundation structure, a many steel reinforced concrete combination foundation structure is disclosed, a plurality of steel cylinder basis of regular polygon are even become to the central point, steel roof is connected on a plurality of steel cylinder basis upper portions, sets up concrete slab on the steel roof, and the concrete slab top surface sets up outer ring roof beam, well ring roof beam, interior ring roof beam, concrete girder, concrete secondary beam, and the concrete changeover portion is connected on well ring roof beam upper portion, and the upper portion of concrete changeover portion sets up a steel tower section of thick bamboo. The utility model discloses have the advantage on gravity type basis and shell type basis concurrently, application scope is wide, transportation simple to operate, recycle, bear the weight of the dynamic height, both can regard as top-bearing formula structure, through steel tower section of thick bamboo and linear type changeover portion, convert upper portion fan load into the controllable tension and compression stress of structure, can regard as gravity type structure again, resist the upper portion load through the gravity of self.
Description
Technical Field
The utility model relates to an ocean engineering's foundation structure technical field, specific theory relates to a many section of thick bamboo combination foundation structure.
Background
At present, in the field of offshore wind power, the form of a wind turbine foundation mainly comprises a gravity type foundation, a jacket foundation, a cylindrical foundation, a pile foundation, a floating foundation and the like.
The gravity type foundation integrally resists external load by means of the dead weight of the structure and the weight of the filler and the ballast on the gravity type foundation, the structural stability is maintained, the construction principle is simple, the cost of the filler and the ballast material is low, and the construction cost is low for a shallow foundation; however, the self weight and the geometric dimension of the foundation are large, the foundation occupies a wider range of the seabed, and the requirement on geological conditions is high, so that the applicable water depth range of the gravity foundation is limited, and the cost is high. The suction type cylindrical foundation has the advantages of simple form, strong bearing capacity, simple transportation and installation, easy recovery and higher anti-slip stability of the cylindrical skirt. However, as the water depth increases, the wind wave load becomes larger, the diameter of the cylindrical foundation required by the large bending moment load is larger, and large-scale equipment is required in the processes of transportation, installation and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses what put forth effort to solve is that present marine foundation structure load transmission is reasonable inadequately, construction installation is complicated, the technical problem of many section of thick bamboo basis leveling difficulty, provides a many section of thick bamboo reinforced concrete combined foundation structure, has combined gravity type structural cost low, bearing capacity is strong and section of thick bamboo type basis simple to operate, low in cost, recycle's characteristics, bears the weight of dynamic height, installation transportation convenience, application scope is wide, cost greatly reduced.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a multi-cylinder steel-concrete combined foundation structure comprises a plurality of identical steel cylinder foundations, wherein the plurality of steel cylinder foundations can form a regular polygon to be arranged on a horizontal plane according to a central point connecting line, the tops of the plurality of steel cylinder foundations are connected with a steel top plate together, and a concrete slab is arranged on the upper portion of the steel top plate; circular through holes are formed in the centers of the steel top plate and the concrete plate, and the circular through holes do not intersect with projections of the steel cylinder foundation on the steel top plate and the concrete plate; the concrete transition section is a linear thin-wall structure with a circular ring section, and the diameter of a circular ring at the bottom is larger than that of a circular ring at the top; a steel tower drum is arranged at the upper part of the concrete transition section, and the bottom of the steel tower drum is embedded in the concrete transition section;
the top surface of the concrete plate is provided with an outer ring beam, a middle ring beam and an inner ring beam; the outer ring beam is positioned at the outer side edge of the top surface of the concrete plate; the middle ring beam is positioned in the middle of the top surface of the concrete plate and is arranged at the lower part of the concrete transition section; the inner ring beam is arranged at the edge of the circular through hole on the top surface of the concrete plate;
the top surface of the concrete plate is uniformly provided with concrete main beams in the radial direction, and the concrete main beams extend from the inner ring beam to the outer ring beam; concrete secondary beams are uniformly arranged on the top surface of the concrete plate between every two adjacent concrete main beams in the radial direction, and the concrete secondary beams extend from the middle ring beam to the outer ring beam.
Further, the number of the steel cylinder bases is 3-6; the radius of the steel cylinder foundation is 10-15m, and the height of the steel cylinder foundation is 8-12 m; the net distance between two adjacent steel cylinder foundations is 1-3 times of the outer diameter of the steel cylinder foundation.
Furthermore, an upward steel rib plate is arranged on the periphery of the steel top plate, and the steel rib plate is inserted into the concrete plate and the outer ring beam.
Further, the concrete plate is consistent with the outline of the steel top plate, and the thickness of the concrete plate is 0.3-1 m.
Furthermore, the radiuses of the center of the steel top plate and the circular through hole of the concrete slab are 0.5-1.0 time of the radius of the steel cylinder foundation 1.
Furthermore, the concrete transition section is of an equal-thickness structure, the wall thickness of the concrete transition section is 0.5-1.5m, and prestressed steel strands are distributed in the middle of the concrete transition section.
Further, the outer edge of the outer ring beam is flush with the outer edge of the concrete slab, and the shape of the outer ring beam is consistent with the edge of the concrete slab; the width of the outer ring beam is 0.5-1.5m, and the height of the outer ring beam is 0.8-1.8 m; the middle ring beam is positioned in the middle of the top surface of the concrete plate, is annular, and has a width of 0.5-1.5m and a height of 0.8-1.8 m; the radius of the middle ring beam is 1.5-2 times of that of the steel tower cylinder; the inner diameter of the inner ring beam is consistent with the diameter of the circular through hole, the width of the inner ring beam is 0.5-1.5m, and the height of the inner ring beam is 0.8-1.8 m.
Further, the width of the concrete girder is 0.5-1.5m, and the height of the concrete girder is 0.8-1.8 m; the included angle between the adjacent concrete main beams is 60 degrees; the concrete secondary beams comprise 12-18, 2-3 concrete secondary beams are arranged between every two adjacent concrete main beams, and the included angle between the axes of the adjacent concrete secondary beams is 20-30 degrees.
Furthermore, the steel tower cylinder is a variable cross-section uniform-thickness steel pipe, and the diameter of the bottom of the steel tower cylinder is larger than that of the top of the steel tower cylinder.
The utility model has the advantages that:
the multi-cylinder reinforced concrete combined foundation structure of the utility model connects a plurality of single cylinder foundations into a whole through the steel top plate and the concrete plate, which is beneficial to increasing the anti-overturning moment of the multi-cylinder reinforced concrete combined foundation structure and improving the stability in the transportation process; the combination of the concrete slab and the slab beam system effectively transfers and uniformly disperses the upper load, and the upper load is approximately converted into tensile force and pressure at the cylindrical foundation so as to exert the maximum bearing capacity of the cylindrical foundation, and the structural stress system is clear; the concrete transition section adopts a cast-in-place process, is an integral structure, and commonly transmits upper load, thereby increasing the integral rigidity of the structure, saving materials and reducing the manufacturing cost. The multi-steel-cylinder reinforced concrete combined foundation structure has the advantages that the rigidity of the steel top plate is high, the inclination angle of the foundation in the sinking process can be adjusted by adjusting the pressure intensity among the steel cylinders, the rigidity is high, and the smooth leveling of the foundation is facilitated.
The utility model discloses a many steel reinforced concrete composite foundation structure, its steel roof, concrete slab has strengthened the wholeness on a plurality of steel cylinder foundations with being connected of concrete changeover portion, can improve the condition such as mutual diastrophism between the steel cylinder foundations in the work progress effectively, be favorable to improving construction quality, avoid the internal force difference too big between the steel cylinder foundations simultaneously, thereby reduce the holistic differential settlement of many steel reinforced concrete composite foundation structure, the setting up of circular through-hole has reduced the resistance that sinks of a plurality of steel cylinder foundations in aqueous in the middle of steel roof and the concrete slab, the construction of being convenient for.
To sum up, the utility model discloses a many section of thick bamboo reinforced concrete combination foundation structure has the advantage on gravity type basis and section of thick bamboo basis concurrently, and application scope is wide, transportation simple to operate, recycle, bear the weight of the dynamic height, both can regard as top-bearing formula structure, through steel tower section of thick bamboo and linear type changeover portion, convert upper portion fan load into the controllable tension and compression stress of structure, can regard as gravity type structure again, resists the upper portion load through the gravity of self.
Drawings
Fig. 1 is a schematic perspective view of a multi-tube reinforced concrete composite foundation structure provided by the present invention;
FIG. 2 is a front view of a multi-tube reinforced concrete composite foundation structure provided by the present invention;
FIG. 3 is a top view of a multi-tube reinforced concrete composite foundation structure provided by the present invention;
fig. 4 is a schematic structural diagram of a reinforced concrete beam slab system in a multi-tube reinforced concrete combined foundation structure provided by the utility model.
In the figure: 1. a steel cylinder foundation; 2. a steel top plate; 3. a concrete slab; 4. an outer ring beam; 5. a middle ring beam; 6. an inner ring beam; 7. a concrete main beam; 8. a concrete secondary beam; 9. a concrete transition section; 10. a steel tower drum.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1 to 3, the present embodiment discloses a multi-cylinder steel-concrete composite foundation structure, which includes a plurality of identical steel cylinder foundations 1, steel roof slabs 2, concrete slabs 3, outer ring beams 4, middle ring beams 5, inner ring beams 6, main concrete beams 7, secondary concrete beams 8, transition concrete sections 9, and steel towers 10.
A plurality of same steel cylinder foundations 1 are mutually independent, can form a regular polygon according to the central point connecting line on the horizontal plane and are welded with the steel top plate 2 at the upper part. The number of the steel cylinder bases 1 is generally 3-6; the steel cylinder foundation 1 is a steel cylindrical structure, the radius is 10-15m, and the height is 8-12 m. The net distance between two adjacent steel cylinder foundations 1 is 1-3 times of the outer diameter of the steel cylinder foundation 1.
The steel top plate 2 is arranged on the tops of the steel cylinder foundations 1 and welded with the top surfaces of the steel cylinder foundations 1. The shape of the steel top plate 2 is defined by an outer common tangent of the circular section of the adjacent steel cylinder foundation 1 and an arc line section between the outer common tangents, and the projection of the circle center of each arc line section and the circle center of the circular section of the steel cylinder foundation 1 are the same point on the horizontal plane. The thickness of the steel top plate 2 is 0.006-0.01 m. An upward steel rib plate is arranged at the periphery of the steel top plate 2, and the height of the steel rib plate is the same as the total height of the concrete plate 3 and the outer ring beam 4; the steel rib plates are used for being inserted into the concrete plates 3 and the outer ring beams 4, and the concrete structure is integrally and effectively connected with the steel cylinder foundations 1. A circular through hole is formed in the center of the steel top plate 2 and used for reducing sinking resistance of the steel cylinder foundations 1 in water; the range of the circular through hole does not extend to the position of the steel cylinder foundation 1, namely the circular through hole does not intersect with the projection of the steel cylinder foundation 1 on the steel top plate 2, and the radius of the circular through hole in the center of the steel top plate 2 is generally 0.5-1.0 time of the radius of the steel cylinder foundation 1.
The concrete plate 3 is arranged on the upper portion of the steel top plate 2, the concrete plate 3 is consistent with the outline of the steel top plate 2, and the thickness of the concrete plate is 0.3-1 m. The concrete slab 3 is poured on the upper part of the steel roof slab 2, and the steel rib plate of the steel roof slab 2 extends upwards into the concrete slab 3, so that the concrete slab 3 and the steel roof slab 2 are firmly combined. The center of the concrete slab 3 is also provided with a circular through hole, the radius of the circular through hole is consistent with the size of the circular through hole arranged on the steel top plate 2, and the circular through hole is also used for reducing the sinking resistance of the steel cylinder foundations 1 in water.
As shown in fig. 4, the top surface of the concrete slab 3 is provided with three ring beams, including an outer ring beam 4, a middle ring beam 5 and an inner ring beam 6. The outer ring beam 4 is positioned on the outer side of the top surface of the concrete slab 3, the outer edge of the outer ring beam is flush with the outer edge of the concrete slab 3, and the shape of the outer ring beam is consistent with that of the edge of the concrete slab 3; the width of the outer ring beam 4 is 0.5-1.5m, and the height is 0.8-1.8 m. The middle ring beam 5 is positioned in the middle of the top surface of the concrete slab 3, is in a ring shape, has the width of 0.5-1.5m and the height of 0.8-1.8 m; the radius of the middle ring beam 5 is 1.5-2 times of that of the steel tower barrel 11. The inner ring beam 7 is arranged at the edge of the circular through hole on the top surface of the concrete slab 3, the inner diameter of the inner ring beam 7 is consistent with the diameter of the circular through hole, the width is 0.5-1.5m, and the height is 0.8-1.8 m.
The top surface of the concrete slab 3 is connected with a main concrete beam 7 and a secondary concrete beam 8 between the three ring beams. The concrete main beams 7 are uniformly arranged on the top surface of the concrete slab 3 in the radial direction and extend from the inner ring beam 7 to the outer ring beam 4. In an embodiment of the present invention, the concrete girders 7 include 6, and an included angle between adjacent concrete girders 7 is 60 degrees; the width of the concrete girder 7 is 0.5-1.5m, and the height is 0.8-1.8 m. The concrete secondary beams 8 are uniformly arranged between every two adjacent concrete main beams 7 on the top surface of the concrete slab 3 in the radial direction and extend from the middle ring beam 5 to the outer ring beam 4. In an embodiment of the present invention, the concrete secondary beams 8 include 12 to 18, 2 to 3 concrete secondary beams 8 are arranged between every two adjacent concrete main beams 7, and the included angle between the axes of the adjacent concrete secondary beams 8 is 20 to 30 degrees.
A steel tower drum 10 is connected above the concrete transition section 9, and the bottom end of the steel tower drum 10 is embedded into the upper portion of the concrete transition section 9.
The construction method of the multi-cylinder reinforced concrete combined foundation structure specifically comprises the following steps:
(1) a plurality of steel cylinder foundations 1 are prefabricated on land, and the steel cylinder foundations 1 are arranged on a horizontal plane according to a connecting line of central points of the steel cylinder foundations 1 to form a regular polygon and then are welded with a steel top plate 2;
(2) taking the steel top plate 2 as a bottom surface template of the concrete plate 3, binding steel bars on the steel top plate 2, and pouring the concrete plate 3, the outer ring beam 4, the middle ring beam 5, the inner ring beam 6, the concrete main beam 7, the concrete secondary beam 8 and the concrete transition section 9 together;
(3) hoisting the whole structure after the pouring construction into water, checking the air tightness, mounting a steel tower drum 10 on the upper part of the concrete transition section 9, mounting a machine head on the steel tower drum 10, and adjusting the draught of a steel drum foundation according to towing requirements;
(4) carrying out floating towing on the multi-cylinder steel-concrete combined foundation structure and the machine head;
(5) after the multi-cylinder steel-concrete combined foundation structure and the machine head are subjected to floating towing to a specified sea area, self-weight sinking is firstly carried out, and then negative pressure sinking is carried out to a specified position;
(6) and after the sinking is finished, reinforcing the soil body in the steel cylinder foundation 1.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various changes without departing from the spirit and the scope of the invention as claimed.
Claims (9)
1. A multi-cylinder steel-concrete combined foundation structure comprises a plurality of identical steel cylinder foundations, wherein the plurality of steel cylinder foundations can form a regular polygon to be arranged on a horizontal plane according to a central point connecting line; circular through holes are formed in the centers of the steel top plate and the concrete plate, and the circular through holes do not intersect with projections of the steel cylinder foundation on the steel top plate and the concrete plate; the concrete transition section is a linear thin-wall structure with a circular ring section, and the diameter of a circular ring at the bottom is larger than that of a circular ring at the top; a steel tower drum is arranged at the upper part of the concrete transition section, and the bottom of the steel tower drum is embedded in the concrete transition section;
the top surface of the concrete plate is provided with an outer ring beam, a middle ring beam and an inner ring beam; the outer ring beam is positioned at the outer side edge of the top surface of the concrete plate; the middle ring beam is positioned in the middle of the top surface of the concrete plate and is arranged at the lower part of the concrete transition section; the inner ring beam is arranged at the edge of the circular through hole on the top surface of the concrete plate;
the top surface of the concrete plate is uniformly provided with concrete main beams in the radial direction, and the concrete main beams extend from the inner ring beam to the outer ring beam; concrete secondary beams are uniformly arranged on the top surface of the concrete plate between every two adjacent concrete main beams in the radial direction, and the concrete secondary beams extend from the middle ring beam to the outer ring beam.
2. A multi-cylinder steel-concrete composite foundation structure according to claim 1, characterized in that the number of said steel cylinder foundations is 3-6; the radius of the steel cylinder foundation is 10-15m, and the height of the steel cylinder foundation is 8-12 m; the net distance between two adjacent steel cylinder foundations is 1-3 times of the outer diameter of the steel cylinder foundation.
3. The multi-tube reinforced concrete composite foundation structure as claimed in claim 1, wherein the steel top plate is provided at a periphery thereof with upward steel ribs, and the steel ribs are inserted into the concrete plate and the outer ring beam.
4. A multi-cylinder steel-concrete composite foundation structure according to claim 1, wherein said concrete slab conforms to the contour of said steel top slab, said concrete slab having a thickness of 0.3-1 m.
5. A multi-cylinder steel-concrete composite foundation structure according to claim 1, characterized in that the radius of the steel roof centre and the circular through hole of the concrete slab are both 0.5-1.0 times the radius of the steel cylinder foundation (1).
6. The multi-cylinder steel-concrete combined foundation structure of claim 1, wherein the concrete transition section is of an equal-thickness structure, the wall thickness of the concrete transition section is 0.5-1.5m, and prestressed steel strands are distributed in the middle of the concrete transition section.
7. The multi-tubular steel-concrete composite foundation structure of claim 1, wherein the outer edge of said outer ring beam is flush with the outer edge of said concrete slab and is shaped to conform to the edge of said concrete slab; the width of the outer ring beam is 0.5-1.5m, and the height of the outer ring beam is 0.8-1.8 m; the middle ring beam is positioned in the middle of the top surface of the concrete plate, is annular, and has a width of 0.5-1.5m and a height of 0.8-1.8 m; the radius of the middle ring beam is 1.5-2 times of that of the steel tower cylinder; the inner diameter of the inner ring beam is consistent with the diameter of the circular through hole, the width of the inner ring beam is 0.5-1.5m, and the height of the inner ring beam is 0.8-1.8 m.
8. A multi-tube steel-concrete composite foundation structure according to claim 1, wherein the width of the concrete main beam is 0.5-1.5m, and the height is 0.8-1.8 m; the included angle between the adjacent concrete main beams is 60 degrees; the concrete secondary beams comprise 12-18, 2-3 concrete secondary beams are arranged between every two adjacent concrete main beams, and the included angle between the axes of the adjacent concrete secondary beams is 20-30 degrees.
9. The multi-cylinder reinforced concrete composite foundation structure of claim 1, wherein the steel cylinders are variable cross-section constant thickness steel pipes, and the diameter of the bottom is larger than that of the top.
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| CN201920992332.0U CN210621736U (en) | 2019-06-28 | 2019-06-28 | Multi-cylinder reinforced concrete combined foundation structure |
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| CN201920992332.0U CN210621736U (en) | 2019-06-28 | 2019-06-28 | Multi-cylinder reinforced concrete combined foundation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397068A (en) * | 2019-06-28 | 2019-11-01 | 天津大学 | More steel reinforced concrete combination foundation structures of one kind and its construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397068A (en) * | 2019-06-28 | 2019-11-01 | 天津大学 | More steel reinforced concrete combination foundation structures of one kind and its construction method |
| CN110397068B (en) * | 2019-06-28 | 2024-03-08 | 天津大学 | Multi-cylinder steel-concrete combined foundation structure and construction method thereof |
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