CN114348192A - Fabricated FRP concrete guyed tower type damping platform and construction method thereof - Google Patents
Fabricated FRP concrete guyed tower type damping platform and construction method thereof Download PDFInfo
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- 239000004567 concrete Substances 0.000 title claims abstract description 210
- 238000013016 damping Methods 0.000 title claims abstract description 49
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 239000000178 monomer Substances 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims description 120
- 239000010959 steel Substances 0.000 claims description 120
- 238000003466 welding Methods 0.000 claims description 37
- 239000002131 composite material Substances 0.000 claims description 22
- 239000011376 self-consolidating concrete Substances 0.000 claims description 20
- 230000035939 shock Effects 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 67
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 230000000452 restraining effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
An assembled FRP concrete guyed tower type damping platform and a construction method thereof relate to the technical field of building equipment, and comprise an upper platform structure, upper layer module monomers, layered module connecting members, a plurality of lower layer module monomers and independent square foundations, wherein the upper layer module monomers and the lower layer module monomers are assembled to form an upper layer structure and a lower layer structure of a rigid connection system respectively through integral nodes, ring dampers, FRP concrete combined columns, FRP concrete combined diagonal braces and FRP concrete combined truss braces; the upper platform structure consists of a damping box body and an FRP concrete platform cross brace, and the damping box body and the FRP concrete platform cross brace are connected through a transverse damper; the upper platform structure is connected with the upper layer structure through the stiffening ribs and the column leg connectors; the lower layer structure is connected with the independent square foundation through the connecting sleeve. The fabricated FRP concrete guy cable tower type damping platform and the construction method thereof have the advantages of simple construction, high assembly efficiency, strong corrosion resistance, good energy dissipation and damping performance and reusability.
Description
The technical field is as follows:
the invention relates to the technical field of building equipment, in particular to an assembled FRP concrete guy cable tower type damping platform and a construction method thereof.
Background art:
the guyed tower type ocean platform has a working water area of 240m to 1000m, belongs to a deepwater ocean platform, and has the advantages of simple structure, relatively small component size and strong adaptability to various environmental loads compared with a jacket platform. The working application water area is deep sea, the environment is severe, and the platform member has strict requirements on strength, rigidity, stability and corrosion resistance, so the guyed tower type ocean platform has the characteristics of high manufacturing cost, great difficulty in design, construction and installation technology and the like. Under the large background that the deep water drilling resources are surplus for a long time at present, the platform is not applied in a large range due to high manufacturing cost and construction cost.
The invention content is as follows:
the invention aims to overcome the defects in the prior art and provides a novel prefabricated FRP concrete combined guyed tower type damping platform structure system which is simple and convenient to construct, high in assembling efficiency, strong in corrosion resistance, good in energy dissipation and damping performance and capable of being repeatedly used and a construction method thereof.
In order to solve the problems existing in the background technology, the invention adopts the following technical scheme: the rigid connection system comprises an upper platform structure, a plurality of upper layer module single bodies, a layered module connecting member, a plurality of lower layer module single bodies and an independent square foundation, wherein the upper layer structure and the lower layer structure of the rigid connection system are formed by assembling the plurality of upper layer module single bodies and the plurality of lower layer module single bodies through integral nodes, ring-type dampers, FRP concrete combined columns, FRP concrete combined diagonal braces and FRP concrete combined truss braces respectively; the upper platform structure consists of a damping box body and an FRP concrete platform cross brace, and the damping box body and the FRP concrete platform cross brace are connected through a lead core rubber cushion layer to form a damping system; the upper platform structure is connected with the upper layer structure through a stiffening rib and a column leg connecting port; the lower layer structure is connected with the independent square foundation through the connecting sleeve.
The outer wall of the shock absorption box body is provided with a plurality of transverse dampers, the transverse dampers are uniformly distributed on the shock absorption box body, and the shock absorption box body is provided with an FRP steel plate.
The integral type joint comprises a vertical half pipe, an inclined half pipe and a transverse half pipe, the top and the bottom of the vertical half pipe are respectively connected with an inner pipe through ring dampers, a backing plate is arranged on the outer wall of the inner pipe, a high-strength bolt is arranged on the outer wall of the backing plate and connected with an FRP concrete combined upright post, the inner pipe is inserted into the FRP concrete combined upright post, and a connecting lug is arranged at the end part of the FRP concrete combined upright post; the side wall of the vertical half pipe is provided with an oblique half pipe and a horizontal half pipe, and the oblique half pipe and the horizontal half pipe are respectively connected with the FRP concrete combined diagonal brace and the FRP concrete combined truss brace.
The layered connecting component comprises a first C-shaped sleeve, a second C-shaped sleeve and a hydraulic fixer, the first C-shaped sleeve is connected with the second C-shaped sleeve through the hydraulic fixer, the upper part of the first C-shaped sleeve and the lower part of the second C-shaped sleeve are respectively connected with the inner pipe through ring dampers, the outer wall of the inner pipe is provided with a backing plate, the outer wall of the backing plate is provided with a high-strength bolt, the high-strength bolt is connected with the FRP concrete combined upright, the inner pipe is inserted into the FRP concrete combined upright, and the end part of the FRP concrete combined upright is provided with a connecting lug; an inclined half pipe and a transverse half pipe are arranged on one side wall of the C-shaped sleeve, the inclined half pipe and the transverse half pipe are respectively connected with the FRP concrete combined diagonal brace and the FRP concrete combined truss brace, and an FRP inner pipe with a conical head is arranged at the bottom of the C-shaped sleeve; and a rubber cushion layer is arranged in the second C-shaped sleeve, an inclined half pipe and a transverse half pipe are arranged on the outer wall of the second C-shaped sleeve, and the inclined half pipe and the transverse half pipe are respectively connected with the FRP concrete combined diagonal brace and the FRP concrete combined truss brace.
The lower structure-foundation connecting member comprises a connecting sleeve, an FRP (fiber reinforce Plastic) inner pipe with a conical head arranged at the bottom of the lower structure is inserted into the connecting sleeve, the connecting sleeve is fixed on an independent square foundation, the independent square foundation comprises a concrete base and a steel plate foundation plate, and the steel plate foundation plate is arranged on the outer wall of four circles of the concrete base.
The upper platform structure comprises a plurality of column leg connectors, a platform upright post and platform cross braces, the platform cross braces are arranged on the platform upright post in a staggered mode, the column leg connectors are provided with platform cross brace intersections, the column leg connectors are connected with the FRP concrete combined upright post, and stiffening ribs are arranged at the column leg connectors.
The FRP concrete combined upright post, the FRP concrete combined diagonal brace and the FRP concrete combined truss are respectively divided into three forms, wherein the core concrete, the steel pipe and the FRP pipe are sequentially arranged from inside to outside in the first form, the core concrete, the steel pipe, the sandwich concrete and the FRP pipe are sequentially arranged from inside to outside in the second form, and the steel pipe, the sandwich concrete and the FRP pipe are sequentially arranged from inside to outside in the third form.
The construction method of the FRP concrete composite structure upright column comprises the steps of firstly wrapping a steel pipe by using an outer-layer seamless winding type FRP pipe, fixing inner pipes with the radius being the radius of the inner wall of the steel pipe at the two ends of the steel pipe through transverse high-strength bolts, extending out the designed length, sealing the end ports of the inner pipes at the lower part of the steel pipe, arranging pouring openings at the top ends of the inner pipes at the upper part, pouring self-compacting concrete into the FRP steel pipe, enabling the height of the concrete poured into the FRP steel pipe to be equal to the top of the inner pipes, and welding connecting lugs on the two end faces of the steel pipe after the concrete is formed; the FRP concrete combined truss construction method comprises the steps of firstly wrapping a steel pipe by using an outer seamless winding type FRP pipe, then extending out a designed length of the steel pipe through inner pipes with the radius of transverse high-strength bolts as the radius of the inner wall of the steel pipe at two ends of the steel pipe, sealing the end port of the inner pipe at one end of the steel pipe, forming a pouring opening at the top end of the inner pipe at the other end of the steel pipe, pouring self-compacting concrete into the FRP steel pipe, enabling the height of the concrete poured into the FRP steel pipe to be equal to the top of the inner pipe, and welding connecting lugs on two end faces of the steel pipe after the concrete is formed; the construction method of the integral node comprises the steps of firstly designing a multi-plane node according to design requirements, wrapping the outer wall of the multi-plane node by using an outer seamless winding type FRP pipe, reserving embedding spaces at the ends of a vertical half pipe, a horizontal half pipe and an inclined half pipe of a single node, sealing, welding a connecting lug on the end face of the half pipe, and finally pouring self-compacting concrete into a pouring hole to fill the inner space of the multi-plane node.
Firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting an integral FRP multi-plane node, connecting and fixing the integral FRP multi-plane node through a high-strength bolt, forming a basic truss unit structure, and forming a layered module monomer of a truss by using 5-6 basic truss units; welding a C-shaped sleeve II at the upper end of each set single stand column of the layered module, and placing a rubber gasket into the C-shaped sleeve II; welding a first C-shaped sleeve at the lower end of each single upright post of the set hierarchical module, and installing and fixing a hydraulic fixer on the side wall of each upright post through a high-strength bolt; the upper end surface of the single column of the layering module at the top layer in the layering of the truss is provided with a bolt hole connecting lug and an inner tube with a designed length extending out, self-compacting concrete is poured into the inner tube, and the height of the concrete is equal to the top of the inner tube; forming a bolt hole connecting lug and welding a conical head inner pipe with a designed length on the lower end surface of a single column of a layering module at the bottom layer in the layering of the truss, and pouring self-compacting concrete into the inner pipe until the conical head inner pipe is filled; firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting FRP integral multi-plane nodes, and connecting and fixing the FRP integral multi-plane nodes through high-strength bolts to form a platform cross brace structure; and welding a column leg connector at the bottom of the platform cross brace according to design requirements.
Firstly, excavating an oil extraction site to a corresponding depth, leveling, placing a template and pouring a square independent foundation, wherein a steel foundation plate with a connecting sleeve is arranged at the upper part of the foundation; after the foundation is formed, arranging the truss layered module monomers prefabricated in a factory in sequence, and transporting the truss layered module monomers to corresponding places on the sea; secondly, sinking the bottom length layering module monomer in the truss layering to a specified position, butting an inner pipe with a conical head at the lower end of the bottom module with 4 connecting sleeves of a square independent foundation, and then screwing the high-strength bolts on the connecting lugs through an underwater robot; then sequentially immersing the layered module monomers into water, completely butting an inner pipe with a conical head at the lower end of the upper layer module monomer with a C-shaped sleeve of the lower layer module monomer, compacting an interface through a hydraulic fixer and screwing a high-strength bolt on a connecting lug by using an underwater robot; when the layered module monomer is assembled to the top layer module, mooring ropes are tied at the mooring rope connecting positions, and mooring weight blocks at the lower ends of the mooring ropes are placed at designed positions to form a fixing effect on the tower structure; and finally, hoisting the upper structure, butting the lower column leg connecting port of the platform with the inner pipe of the top module of the lower structure, and connecting and welding and fixing the upper column leg connecting port and the inner pipe of the top module through high-strength bolts on the connecting lugs.
The invention has the following advantages:
1. the FRP concrete structure is applied to the field of offshore platforms, the corrosion resistance of the platform structure is greatly improved by the FRP layer, the later maintenance cost of the member is reduced, and the service life of the structure is prolonged; the steel pipe layer restricts the deformation of the inner concrete layer and fully plays the role of the strength of the concrete; the concrete layer in the member improves the integral rigidity of the structure and reduces the deformation of the lower truss structure under the action of underwater load.
2. Through setting up the annular damper, the deformation performance of truss brace, stand under the effect of load has obtained improving, simultaneously, has improved the durability that the member used, and the ability of structure energy dissipation shock attenuation has obtained the promotion on the whole.
3. The lower truss connection mode of the fabricated FRP combined guyed tower type damping platform structure system is characterized in that the integral nodes prefabricated in a factory are connected with the upright posts and the trusses, and the construction process of the guyed tower type damping platform structure system is simplified through the modes of inner pipe nested connection and high-strength bolt connection and fixation; the joint resists shearing force through the inner pipe, and the high-strength bolt resists pulling force, so that the requirements on strength and deformation of the structure are met; when the offshore field construction is carried out, the lower truss structure can simply and quickly lift the layered module single bodies for construction, and the layered module single bodies are spliced and butted in sequence, the screws are screwed down by using the underwater robot, and the construction process of sequential butting is simple and convenient, short in time consumption and free of pollution; when the platform needs to be dismantled, only need to dismantle the layering module monomer in proper order and carry away, shift to other destinations after, treat the basis pour shaping after alright direct mount, the platform structure can be dismantled at any time and assemble at any time, play a reuse, reduce cost's effect.
4. According to the invention, the novel damping platform is adopted, the damping box body is separated from the platform cross brace and the lower truss structure by the rubber cushion layer and the transverse damper, so that the self vibration effect of the platform in stormy waves of the upper damping box body is reduced, and the stability of the drilling platform and the comfort of workers in the working process are ensured.
Description of the drawings:
FIG. 1 is a schematic cross-sectional view of a shock absorbing housing + damper + of the present invention;
FIG. 2 is a schematic view of a platform cross brace + rubber cushion of the present invention;
FIG. 3 is a schematic top-bottom view of the cross brace of the present invention;
FIG. 4 is a schematic cross-sectional view of a damping platform of the present invention;
FIG. 5 is a top schematic view of a top module of the present invention;
FIG. 6 is a schematic view of a layered modular cell of the present invention;
FIG. 7 is a schematic view of a layered module connection of the present invention;
FIG. 8 is a schematic view of the underground truss structure-foundation connection of the present invention;
FIG. 9 is a schematic diagram of a free standing square base of the present invention;
FIG. 10 is a schematic view of the composite truss attachment of the present invention;
FIG. 11 is a schematic view of a damper, high strength bolt backing plate of the present invention;
FIG. 12 is a schematic view of a layered module connecting member of the present invention;
FIG. 13 is a schematic sectional view of an FRP concrete structure of the invention;
figure 14 is a plan view of the fabricated guyed tower shock absorbing platform of the present invention.
Description of reference numerals: 1 lead core rubber cushion layer, 2 transverse damper, 3 damping platform, 4 stiffening ribs, 5 mooring rope connecting points, 6 mooring rope, 7FRP concrete truss structure, 8 ring type damper, 9 connecting sleeve, 10 independent square foundation, 11 mooring weight, 12FRP steel plate, 13 damping box body, 14 steel plate, 15FRP concrete composite truss, 16C type sleeve II, 17 layered module monomer, 18 integral node, 19FRP concrete composite truss, 20 basic truss unit, 21C type sleeve I, 22FRP tapered head inner pipe, 23 hydraulic fixer, 24 connecting lug, 25 inner pipe, 26 bolt hole I, 27 backing plate, 28 transverse high-strength bolt, 29 bolt hole II, 30 vertical half pipe, 31FRP concrete composite upright post, 32 oblique half pipe, 33 transverse half pipe, 34FRP concrete composite diagonal brace, 35 upper module monomer, 36 layered module connecting component, 37 lower module monomer, 35 FRP concrete composite diagonal brace, 9FRP concrete composite diagonal brace, 18 vertical module monomer, FRP concrete composite upright post, 9 transverse module connecting component, FRP concrete composite diagonal brace, FRP tapered head inner pipe, FRP tapered head, 38 steel plate foundation plates, 39 concrete bases, 40 column leg connectors, 41 column leg connectors, 42 truss columns, 43 platform cross braces, 44FRP concrete platform cross braces, 45FRP outer layers, 46 core concrete, 47 steel pipes, 48FRP pipes and 49 interlayer concrete
The specific implementation mode is as follows:
referring to the drawings, the present invention specifically adopts the following embodiments: the rigid-connection system comprises an upper platform structure, a plurality of upper-layer module single bodies 35, a layered module connecting member 36, a plurality of lower-layer module single bodies 37 and an independent square foundation 10, wherein the plurality of upper-layer module single bodies 35 and the plurality of lower-layer module single bodies 37 are assembled through integral nodes 18, ring-type dampers 8, FRP concrete combined columns 31, FRP concrete combined inclined struts 34 and FRP concrete combined trusses 19 respectively to form an upper-layer structure and a lower-layer structure of the rigid-connection system; the upper platform structure consists of a damping box body 13 and an FRP concrete platform cross brace 44 which are connected through a lead core rubber cushion layer 1 to form a damping system; the upper platform structure is connected with the upper layer structure through a stiffening rib 4 and a column leg connecting port 40; the understructure is connected with an independent square foundation 10 by a connecting sleeve 9. The outer wall of the shock absorption box body 13 is provided with a plurality of transverse dampers 2, the transverse dampers 2 are uniformly distributed on the shock absorption box body 13, and the shock absorption box body 13 is provided with an FRP steel plate 12. The integral type joint 18 comprises a vertical half pipe 30, an oblique half pipe 32 and a transverse half pipe 33, the top and the bottom of the vertical half pipe 30 are respectively connected with an inner pipe 25 through a ring type damper 8, a backing plate 27 is arranged on the outer wall of the inner pipe 25, a transverse high-strength bolt 28 is arranged on the outer wall of the backing plate 27, the transverse high-strength bolt 28 is connected with an FRP concrete combined upright column 31, the inner pipe 25 is inserted into the FRP concrete combined upright column 31, and a connecting lug 24 is arranged at the end part of the FRP concrete combined upright column 31; the side wall of the vertical half pipe 30 is provided with an oblique half pipe 32 and a horizontal half pipe 33, and the oblique half pipe 32 and the horizontal half pipe 33 are respectively connected with the FRP concrete combined inclined strut 34 and the FRP concrete combined truss 19. The layered connecting member 36 comprises a first C-shaped sleeve 21, a second C-shaped sleeve 16 and a hydraulic fixer 23, the first C-shaped sleeve 21 is connected with the second C-shaped sleeve 16 through the hydraulic fixer 23, the upper part of the first C-shaped sleeve 21 and the lower part of the second C-shaped sleeve 16 are respectively connected with an inner pipe 25 through an annular damper 8, a backing plate 27 is arranged on the outer wall of the inner pipe 25, a transverse high-strength bolt 28 is arranged on the outer wall of the backing plate 27, the transverse high-strength bolt 28 is connected with an FRP concrete combined upright column 31, the inner pipe 25 is inserted into the FRP concrete combined upright column 31, and a connecting lug 24 is arranged at the end part of the FRP concrete combined upright column 31; an inclined half pipe 32 and a transverse half pipe 33 are arranged on the side wall of the C-shaped sleeve I21, the inclined half pipe 32 and the transverse half pipe 33 are respectively connected with an FRP concrete combined inclined strut 34 and an FRP concrete combined truss strut 19, and an FRP inner pipe 22 with a conical head is arranged at the bottom of the C-shaped sleeve I21; the outer wall of the second C-shaped sleeve 16 is provided with an oblique half pipe 32 and a transverse half pipe 33, and the oblique half pipe 32 and the transverse half pipe 33 are respectively connected with the FRP concrete combined diagonal brace 34 and the FRP concrete combined truss 19. In FRP area conical head inner tube 22 that understructure bottom was equipped with inserted connecting sleeve 9, connecting sleeve 9 is fixed in independent square foundation 10, independent square foundation 10 includes concrete foundation 39 and steel sheet foundatin plate 38, concrete foundation 39 four rings of outer walls are equipped with steel sheet foundatin plate 38. The upper platform structure comprises a plurality of column leg connectors 40, truss upright columns 42 and flat platform cross braces 43, the platform cross braces 43 are arranged on the truss upright columns 42 in a staggered mode, the column leg connectors 40 are provided with platform cross braces 43 at the intersection, the column leg connectors 40 are connected with the FRP concrete combined upright columns 31, and stiffening ribs 4 are arranged at the column leg connectors 40. The FRP concrete combined upright column 31, the FRP concrete combined diagonal bracing 34 and the FRP concrete combined truss 19 are respectively divided into three forms, wherein the core concrete 46, the steel pipe 47 and the FRP pipe 48 are sequentially arranged from inside to outside, the core concrete 46, the steel pipe 47, the interlayer concrete 49 and the FRP pipe 48 are sequentially arranged from inside to outside, and the steel pipe 47, the interlayer concrete 49 and the FRP pipe 48 are sequentially arranged from inside to outside. The construction method of the FRP concrete composite structure upright column 31 comprises the steps of wrapping a steel tube 47 with an outer seamless winding type FRP tube 48, fixing inner tubes with the radius being the radius of the inner wall of the steel tube at the two ends of the steel tube through transverse high-strength bolts, extending out the designed length, sealing the end ports of the inner tubes at the lower part of the steel tube, arranging pouring openings at the top ends of the inner tubes at the upper part, pouring self-compacting concrete into the FRP steel tube, enabling the height of the concrete poured into the FRP steel tube to be equal to the top of the inner tubes, and welding connecting lugs on the two end faces of the steel tube after the concrete is formed; the FRP concrete combined truss 19 construction method comprises the steps of wrapping a steel pipe 47 by using an outer seamless winding type FRP pipe 48, extending out a designed length from two ends of the steel pipe through an inner pipe with the radius of a transverse high-strength bolt as the radius of the inner wall of the steel pipe, sealing the end port of the inner pipe at one end of the steel pipe, forming a pouring opening at the top end of the inner pipe at the other end of the steel pipe, pouring self-compacting concrete into the FRP steel pipe, enabling the height of the concrete poured into the FRP steel pipe to be equal to the top of the inner pipe, and welding connecting lugs on two end faces of the steel pipe after the concrete is formed; the construction method of the integral node 18 comprises the steps of firstly designing a multi-plane node according to design requirements, wrapping the outer wall of the multi-plane node by an outer seamless winding FRP pipe, reserving embedding spaces at the ends of a vertical half pipe, a horizontal half pipe and an oblique half pipe of a single node, sealing, welding connecting lugs on the end faces of the half pipes, and finally pouring self-compacting concrete into a pouring hole to fill the inner space of the multi-plane node. Firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting an integral FRP multi-plane node, connecting and fixing the integral FRP multi-plane node through a high-strength bolt, forming a basic truss unit structure, and forming a layered module monomer of a truss by using 5-6 basic truss units; welding a C-shaped sleeve II at the upper end of each set single stand column of the layered module, and placing a rubber gasket into the C-shaped sleeve II; welding a first C-shaped sleeve at the lower end of each single upright post of the set hierarchical module, and installing and fixing a hydraulic fixer on the side wall of each upright post through a high-strength bolt; the upper end surface of the single column of the layering module at the top layer in the layering of the truss is provided with a bolt hole connecting lug and an inner tube with a designed length extending out, self-compacting concrete is poured into the inner tube, and the height of the concrete is equal to the top of the inner tube; forming a bolt hole connecting lug and welding a conical head inner pipe with a designed length on the lower end surface of a single column of a layering module at the bottom layer in the layering of the truss, and pouring self-compacting concrete into the inner pipe until the conical head inner pipe is filled; firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting FRP integral multi-plane nodes, and connecting and fixing the FRP integral multi-plane nodes through high-strength bolts to form a platform cross brace structure; and welding a column leg connector at the bottom of the platform cross brace according to design requirements. Firstly, excavating an oil extraction site to a corresponding depth, leveling, placing a template and pouring a square independent foundation, wherein a steel foundation plate with a connecting sleeve is arranged at the upper part of the foundation; after the foundation is formed, arranging the truss layered module monomers prefabricated in a factory in sequence, and transporting the truss layered module monomers to corresponding places on the sea; secondly, sinking the bottom length layering module monomer in the truss layering to a specified position, butting an inner pipe with a conical head at the lower end of the bottom module with 4 connecting sleeves of a square independent foundation, and then screwing the high-strength bolts on the connecting lugs through an underwater robot; then sequentially immersing the layered module monomers into water, completely butting an inner pipe with a conical head at the lower end of the upper layer module monomer with a C-shaped sleeve of the lower layer module monomer, compacting an interface through a hydraulic fixer and screwing a high-strength bolt on a connecting lug by using an underwater robot; when the layered module monomer is assembled to the top layer module, a mooring rope 6 is tied on the mooring rope connecting point 5, and a mooring weight 11 at the lower end of the mooring rope 6 is placed at a designed position to form a fixing effect on the tower structure; and finally, hoisting the upper structure, butting the lower column leg connecting port of the platform with the inner pipe of the top module of the lower structure, and connecting and welding and fixing the upper column leg connecting port and the inner pipe of the top module through high-strength bolts on the connecting lugs.
The upper platform structure of the assembled FRP concrete combined guyed tower platform is a two-layer multi-row FRP concrete combined truss structure and a damping box structure, and the lower truss structure part of the assembled FRP concrete combined guyed tower platform is a tower structure with a square section; the end parts of the FRP concrete combined upright columns and the FRP concrete combined truss support form connecting lugs with bolt holes, and the end part extension inner pipes penetrate through the ring-type damper and are embedded into the node semi-pipes and connected and fixed through high-strength bolts; the integral multi-plane node is formed by intersecting a transverse half pipe, a vertical half pipe and an inclined half pipe, the extending end surfaces of the half pipes form connecting lugs, and the connecting lugs are provided with bolt holes; the lower truss structure is composed of a plurality of layered module monomers, and the upper layer module monomer and the lower layer module monomer are connected through truss layered connecting members and are connected through longitudinal high-strength bolts.
The FRP concrete composite structure form in the above scheme includes and is not limited to the following ways: the composite pipe is composed of FRP pipes, steel pipes and core concrete; the composite pipe is composed of FRP pipes, sandwich concrete, steel pipes and core concrete; the composite pipe is composed of FRP pipes, sandwich concrete and steel pipes; the outer FRP layer in the FRP concrete composite structure can prevent the steel pipe and the concrete in the inner rod piece layer from being corroded by seawater; the steel pipe and the FRP layer play a role in restraining deformation of the concrete layer; the concrete layer plays a great role in improving the structural rigidity and strength of the rod piece.
The half pipe of the integral node in the scheme is reserved with a space for nesting the inner pipe; the half-pipe extending end surface of the integral node forms a connecting lug and is provided with a bolt hole; the radius of the section of the inner pipe is the radius of the inner wall of the monomer node semi-pipe.
In the scheme, the FRP concrete-filled steel tube combination column combined with the ring damper and the FRP concrete combination truss combined with the ring damper are provided with prefabricated inner tubes at the ends of the FRP concrete-filled steel tube combination column combined with the ring damper, the FRP concrete combination column combined with the ring damper and the FRP concrete combination truss combined with the ring damper are fixed by the lateral high-strength bolts on the side walls, the radius of each inner tube is the radius of the inner wall of the FRP concrete combination column combined with the FRP concrete combination truss combined with the ring damper, and the inner tubes penetrate through the ring damper and are embedded into the monomer node half tubes and are fixedly connected through the high-strength bolts.
In the scheme, the lower structure tower structure is composed of a plurality of truss layered modules, wherein 5-6 basic truss units are connected to form a layered module monomer with the height of 30 meters. The layered module monomer is easy to hoist and construct, and can quickly hoist and butt-joint to fix an underwater structure during offshore assembly.
In the scheme, the truss layered module connecting member consists of a hydraulic fixer, a C-shaped sleeve 1, a C-shaped sleeve 2, a rubber gasket, an FRP (fiber reinforced plastic) concrete inner pipe with a conical head and a high-strength bolt, wherein the C-shaped sleeve 1 and the C-shaped sleeve 2 are respectively welded and fixed at two ends of an upright post of an upper-layer truss and a lower-layer truss, the side wall of the upper-layer truss layered single upright post is provided with the hydraulic fixer, and the bottom of the upper-layer truss layered single upright post extends out of the FRP inner pipe with the conical head; the truss structures of the upper-layer layered module and the lower-layer layered module are connected in a nested mode through inner pipes, compacted through a hydraulic fixer and then connected and fixed through longitudinal high-strength bolts.
The upper platform structure-lower truss structure connecting part of the scheme is composed of column leg connectors, stiffening ribs, connecting lugs and inner pipes, the radius of each inner pipe is the radius of the inner wall of each column leg connector, the stiffening ribs are distributed in a cross shape along the outer walls of the column leg connectors, and the connecting parts are nested by the inner pipes and are connected and fixed through longitudinal high-strength bolts.
The upper platform structure part of the scheme is composed of an FRP concrete truss structure platform and a damping box body, the damping box body is arranged in the middle of a platform cross brace and is connected through a transverse damper and a lead rubber pad and is fixedly connected through high-strength bolts.
The lower truss structure-foundation connecting part in the scheme is composed of a square independent foundation with a connecting sleeve and an FRP (fiber reinforced plastic) concrete inner pipe with a conical head, connected in an inner pipe nesting mode and then connected and fixed through a longitudinal high-strength bolt.
The construction method of the fabricated FRP concrete combined guyed tower type damping platform structure comprises the following steps:
the construction method of the prefabricated upright post of the FRP concrete composite structure comprises the following steps: the method comprises the steps of firstly wrapping a steel pipe by using an outer seamless winding type FRP pipe, then arranging inner pipes with the radius being the radius of the inner wall of the steel pipe at the two ends of the steel pipe, extending out to the designed length, and connecting and fixing the inner pipes through transverse high-strength bolts on the side wall of the steel pipe. Sealing the end openings of the inner pipes at the lower parts of the steel pipes, forming pouring openings at the top ends of the inner pipes at the upper parts of the steel pipes, pouring self-compacting concrete into the FRP steel pipes, enabling the height of the concrete poured into the FRP steel pipes to be equal to the top of the inner pipes, and welding connecting lugs on two end surfaces of each steel pipe after the concrete is formed; the construction method of the precast truss of the FRP concrete composite structure comprises the steps of wrapping a steel pipe by using an outer-layer seamless winding type FRP pipe, arranging inner pipes with the radius being the radius of the inner wall of the steel pipe at the two ends of the steel pipe, extending out to the designed length, and connecting and fixing the inner pipes through transverse high-strength bolts on the side wall of the steel pipe. The end opening of the inner pipe at one end of the steel pipe is sealed, the top end of the inner pipe at the other end is provided with a pouring opening, self-compacting concrete is poured into the FRP steel pipe, the height of the concrete poured into the FRP steel pipe is equal to the top of the inner pipe, and after the concrete is formed, connecting lugs are welded on two end faces of the steel pipe.
The construction method of the prefabricated integral multi-plane node of the FRP concrete composite structure comprises the following steps: the method comprises the steps of firstly designing a multi-plane node according to design requirements, wrapping the outer wall of the multi-plane node by using an outer seamless winding type FRP pipe, reserving embedding spaces at the ends of a vertical half pipe, a horizontal half pipe and an oblique half pipe of a single node, sealing, and welding connecting lugs on the end faces of the half pipes. And finally, pouring self-compacting concrete into the pouring hole until the internal space of the multi-plane node is filled.
The construction method of the upper structure of the assembled FRP combined guyed tower platform structure comprises the following steps: firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting an integral FRP multi-plane node, connecting and fixing through high-strength bolts to form a platform cross brace structure, and welding a column leg connector at the bottom of the platform cross brace according to design requirements; the damping box body platform is an integrated box body welded by steel plates, high-strength bolt holes are arranged at the positions of connecting dampers, and the damping box body is fixedly connected with the transverse dampers, the lead core rubber pads and the platform cross braces through the high-strength bolts to form the damping platform.
The construction method of the assembled FRP combined guy cable tower type damping platform structure system comprises the following steps: and excavating the oil extraction site to a corresponding depth, leveling, placing a template and pouring a square independent foundation, wherein a steel foundation plate with a connecting sleeve is arranged at the upper part of the foundation. After the foundation is formed, the truss layered module monomers prefabricated in a factory are arranged in sequence and transported to corresponding places on the sea. Firstly, sinking a single bottom layer module in a layered truss at a specified position, butting an inner pipe with a conical head at the lower end of the bottom layer module with 4 connecting sleeves of a square independent foundation, and then screwing a high-strength bolt on a connecting lug through an underwater robot; then sequentially immersing the layered module monomers into water, and screwing the high-strength bolts on the connecting lugs by using an underwater robot; when the layered module is assembled to the top layer module, mooring ropes are tied at the mooring rope connecting positions, and mooring weight blocks at the lower ends of the mooring ropes are placed at the designed positions to form a fixing effect on the tower structure; and finally, hoisting the upper platform structure, butting the lower column leg connecting port of the platform with the inner pipe of the top module of the lower structure, and connecting and welding and fixing the upper platform structure and the lower platform structure through high-strength bolts on the connecting lugs.
Example 1:
as shown in fig. 10, 11 and 13, the novel assembled FRP concrete combined guyed tower platform structure system is composed of a prefabricated FRP concrete combined upright, an FRP concrete combined truss and an FRP integral multi-plane node, wherein the integral multi-plane node is formed by intersecting a transverse half pipe, a vertical half pipe and an oblique half pipe, an extending end surface forms a connecting lug, and the connecting lug is provided with a bolt hole; the FRP concrete combination upright post and the FRP concrete combination truss support end form a connecting lug with a bolt hole, and an inner pipe extending from the end penetrates through the ring-type damper and then is embedded into the node semi-pipe and is connected and fixed through a high-strength bolt. As shown in fig. 2, the component nodes of the superstructure platform ledger are all formed in combination in the manner described above.
The construction method in the embodiment comprises the following steps:
the construction method of the prefabricated integral type multi-plane node comprises the steps of firstly designing the multi-plane node according to design requirements, wrapping the outer wall of the multi-plane node by an outer seamless winding type FRP pipe, reserving embedding spaces at the ends of a vertical half pipe, a horizontal half pipe and an oblique half pipe of a single node, sealing, and welding connecting lugs on the end faces of the half pipes. Finally, pouring concrete into the pouring holes to fill the internal space of the multi-plane node;
the construction method of the prefabricated upright post of the FRP concrete composite structure comprises the following steps: firstly, wrapping a steel pipe by using an outer seamless winding type FRP pipe, then arranging inner pipes with the radiuses being the radiuses of the inner walls of the steel pipe at the two ends of the steel pipe, extending out to the designed length, connecting and fixing the inner pipes and the outer steel plates through a transverse high-strength bolt on the side wall of the steel pipe, sealing the end ports of the inner pipes at the lower part of the steel pipe, arranging a pouring port at the top end of the inner pipe at the upper part, pouring self-compacting concrete into the FRP steel pipe, enabling the height of the concrete poured into the FRP steel pipe to be equal to the top of the inner pipe, and welding connecting lugs on the two end faces of the steel pipe after the concrete is formed;
the construction method of the prefabricated truss of the FRP concrete composite structure comprises the steps of firstly wrapping a steel pipe by using an outer seamless winding type FRP pipe, then arranging inner pipes with the radius being the radius of the inner wall of the steel pipe at two ends of the steel pipe, extending out the designed length, connecting and fixing the inner pipes and the outer steel plates through a transverse high-strength bolt on the side wall of the steel pipe, sealing the end ports of the inner pipes at one end of the steel pipe, arranging a pouring port at the top end of the inner pipe at the other end of the steel pipe, pouring self-compacting concrete into the FRP steel pipe, leveling the height of the concrete poured into the FRP steel pipe to the top of the inner pipe, and welding connecting lugs on two end faces of the steel pipe after the concrete is formed.
Example 2:
as shown in fig. 1, 2, 3, 4 and 5, a platform cross brace of an upper platform structure of an assembled FRP combined guyed tower-type damping platform structure is formed by sleeving a prefabricated FRP concrete truss and an FRP concrete upright into a ring damper, butting FRP integral multi-plane nodes, and connecting and fixing the FRP integral multi-plane nodes through high-strength bolts to form a platform cross brace structure; welding a column leg connector at the bottom of the platform cross brace according to design requirements; the upper platform structure-lower truss structure connecting part is composed of a column leg connecting port, a stiffening rib, a connecting lug and an inner pipe, is connected in an inner pipe nesting mode, and is connected and fixed through a longitudinal high-strength bolt; the damping box body structure of the upper platform structure is an integrated box body formed by welding steel plates, high-strength bolt holes are arranged at the positions of connecting dampers, and the damping box body platform is fixedly connected with a transverse damper, a lead core rubber pad and a platform cross brace through the high-strength bolts to form a damping platform.
Example 3:
as shown in fig. 6, 7 and 12, the lower tower structure is composed of a plurality of truss layered modules, wherein 5-6 basic truss units are connected to form a layered module monomer with the height of 30 meters. The connecting component of the lower truss structure layered module is composed of a hydraulic fixer, a C-shaped sleeve 1, a C-shaped sleeve 2, a rubber gasket, an FRP (fiber reinforced plastic) concrete inner pipe with a conical head and a high-strength bolt, wherein the C-shaped sleeve 1 and the C-shaped sleeve 2 are respectively welded and fixed at two ends of an upper truss column and a lower truss column, the hydraulic fixer is arranged on the side wall of the upper truss column, the FRP inner pipe with the conical head is welded at the bottom, and the rubber gasket is arranged at the top of the lower truss column.
The construction method in the embodiment comprises the following steps:
firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting an integral FRP multi-plane node, and connecting and fixing the integral FRP multi-plane node through a high-strength bolt to form basic truss units, wherein 5-6 basic truss units form a truss layered module monomer; then welding a C-shaped sleeve 2 at the upper end of each set single-layer module stand column, placing a rubber gasket into the C-shaped sleeve 2, welding a C-shaped sleeve 1 at the lower end of the stand column, fixing a hydraulic fixer on the side wall of the stand column through a high-strength bolt, connecting upper-layer module monomer structures and lower-layer module monomer structures in an inner pipe nesting mode, compacting by using the hydraulic fixer, and then connecting and fixing through a longitudinal high-strength bolt.
Example 4:
as shown in fig. 8 and 9, the lower truss structure-foundation connection part is composed of a square independent foundation with a connection sleeve and an FRP concrete inner pipe with a conical head, and the square independent foundation and the FRP concrete inner pipe are connected in a nested manner by the inner pipe and are connected and fixed by a longitudinal high-strength bolt.
The construction method in the embodiment comprises the following steps:
forming a bolt hole connecting lug on the lower end surface of the lower-layer module upright post of the lower-structure layered middle-bottom layer and welding a taper head FRP inner pipe with a designed length, and then pouring concrete into the inner pipe until the taper head inner pipe is filled; when the underwater robot works underwater, the inner pipe with the conical head at the lower end of the bottom layer module is in butt joint with 4 connecting sleeves of a square independent foundation, and then the high-strength bolts on the connecting lugs are screwed down through the underwater robot.
Example 5:
fig. 14 is an overall schematic diagram of an assembled FRP combined guyed tower platform structure, which includes an upper platform structure part and a lower truss structure part.
The construction method in the embodiment comprises the following steps:
and excavating the oil extraction site to a corresponding depth, leveling, placing a template and pouring a square independent foundation, wherein a steel foundation plate with a connecting sleeve is arranged at the upper part of the foundation. After the foundation is formed, the truss layered module monomers prefabricated in a factory are arranged in sequence and transported to corresponding places on the sea. Firstly, sinking a single bottom layer module in a layered truss at a specified position, butting an inner pipe with a conical head at the lower end of the bottom layer module with 4 connecting sleeves of a square independent foundation, and then screwing a high-strength bolt on a connecting lug through an underwater robot; then sequentially immersing the layered module monomers into water, and screwing the high-strength bolts on the connecting lugs by using an underwater robot; when the layered module is assembled to the top layer module, mooring ropes are tied at the mooring rope connecting positions, and mooring weight blocks at the lower ends of the mooring ropes are placed at the designed positions to form a fixing effect on the tower structure; and finally, hoisting the upper platform structure, butting the lower column leg connecting port of the platform with the inner pipe of the top module of the lower structure, and connecting and welding and fixing the upper platform structure and the lower platform structure through high-strength bolts on the connecting lugs.
In conclusion, the FRP concrete structure is applied to the field of offshore platforms, the corrosion resistance of the platform structure is greatly improved by the FRP layer, the later maintenance cost of the member is reduced, and the service life of the structure is prolonged; the steel pipe layer restricts the deformation of the inner concrete layer and fully plays the role of the strength of the concrete; the concrete layer in the member improves the integral rigidity of the structure and reduces the deformation of the lower truss structure under the action of underwater load. Through setting up the annular damper, the deformation performance of truss brace, stand under the effect of load has obtained improving, simultaneously, has improved the durability that the member used, and the ability of structure energy dissipation shock attenuation has obtained the promotion on the whole. The lower truss connection mode of the fabricated FRP combined guyed tower type damping platform structure system is characterized in that the integral nodes prefabricated in a factory are connected with the upright posts and the trusses, and the construction process of the guyed tower type damping platform structure system is simplified through the modes of inner pipe nested connection and high-strength bolt connection and fixation; the joint resists shearing force through the inner pipe, and the high-strength bolt resists pulling force, so that the requirements on strength and deformation of the structure are met; when the offshore field construction is carried out, the lower truss structure can simply and quickly lift the layered module single bodies for construction, and the layered module single bodies are spliced and butted in sequence, the screws are screwed down by using the underwater robot, and the construction process of sequential butting is simple and convenient, short in time consumption and free of pollution; when the platform needs to be dismantled, only need to dismantle the layering module monomer in proper order and carry away, shift to other destinations after, treat the basis pour shaping after alright direct mount, the platform structure can be dismantled at any time and assemble at any time, play a reuse, reduce cost's effect. According to the invention, the novel damping platform is adopted, the damping box body is separated from the platform cross brace and the lower truss structure by the rubber cushion layer and the transverse damper, so that the self vibration effect of the platform in stormy waves of the upper damping box body is reduced, and the stability of the drilling platform and the comfort of workers in the working process are ensured.
Claims (10)
1. The utility model provides a tower shock attenuation platform of assembled FRP concrete guy cable which characterized in that: the rigid-connection system comprises an upper platform structure, a plurality of upper-layer module single bodies (35), a layered module connecting component (36), a plurality of lower-layer module single bodies (37) and an independent square foundation (10), wherein the upper-layer module single bodies (35) and the lower-layer module single bodies (37) are assembled through integral nodes (18), ring dampers (8), FRP concrete combined columns (31), FRP concrete combined diagonal braces (34) and FRP concrete combined truss braces (19) respectively to form an upper-layer structure and a lower-layer structure of a rigid-connection system; the upper platform structure consists of a damping box body (13) and an FRP concrete platform cross brace (44), and the damping box body and the FRP concrete platform cross brace are connected through a lead core rubber cushion layer (1) to form a damping system; the upper platform structure is connected with the upper layer structure through a stiffening rib (4) and a column leg connecting port (40); the lower layer structure is connected with an independent square foundation (10) through a connecting sleeve (9).
2. The fabricated FRP concrete guyed tower-type shock absorption platform of claim 1, wherein: the damping box body (13) is provided with a plurality of transverse dampers (2) on the outer wall, the transverse dampers (2) are uniformly distributed on the damping box body (13), and the damping box body (13) is provided with an FRP steel plate (12).
3. The fabricated FRP concrete guyed tower-type shock absorption platform of claim 1, wherein: the integral type joint (18) comprises a vertical half pipe (30), an inclined half pipe (32) and a transverse half pipe (33), the top and the bottom of the vertical half pipe (30) are respectively connected with an inner pipe (25) through an annular damper (8), the outer wall of the inner pipe (25) is provided with a backing plate (27), the outer wall of the backing plate (27) is provided with a transverse high-strength bolt (28), the transverse high-strength bolt (28) is connected with an FRP concrete combined column (31), the inner pipe (25) is inserted into the FRP concrete combined column (31), and the end part of the FRP concrete combined column (31) is provided with a connecting lug (24); the side wall of the vertical half pipe (30) is provided with an oblique half pipe (32) and a transverse half pipe (33), and the oblique half pipe (32) and the transverse half pipe (33) are respectively connected with an FRP concrete combined diagonal brace (34) and an FRP concrete combined truss brace (19).
4. The fabricated FRP concrete guyed tower-type shock absorption platform of claim 1, wherein: the layered connecting component (36) comprises a first C-shaped sleeve (21), a second C-shaped sleeve (16) and a hydraulic fixer (23), the first C-shaped sleeve (21) is connected with the second C-shaped sleeve (16) through the hydraulic fixer (23), the upper part of the first C-shaped sleeve (21) and the lower part of the second C-shaped sleeve (16) are respectively connected with the inner pipe (25) through a ring damper (8), a backing plate (27) is arranged on the outer wall of the inner pipe (25), a transverse high-strength bolt (28) is arranged on the outer wall of the backing plate (27), the transverse high-strength bolt (28) is connected with the FRP concrete combined column (31), the inner pipe (25) is inserted into the FRP concrete combined column (31), and a connecting lug (24) is arranged at the end part of the FRP concrete combined column (31); an inclined half pipe (32) and a transverse half pipe (33) are arranged on the side wall of the C-shaped sleeve I (21), the inclined half pipe (32) and the transverse half pipe (33) are respectively connected with an FRP concrete combined diagonal brace (34) and an FRP concrete combined truss brace (19), and an FRP inner pipe (22) with a conical head is arranged at the bottom of the C-shaped sleeve I (21); the outer wall of the C-shaped sleeve II (16) is provided with an oblique half pipe (32) and a transverse half pipe (33), and the oblique half pipe (32) and the transverse half pipe (33) are respectively connected with an FRP concrete combined diagonal brace (34) and an FRP concrete combined truss (19).
5. The fabricated FRP concrete guyed tower-type shock absorption platform of claim 1, wherein: FRP area conical head inner tube (22) that understructure bottom was equipped with insert connecting sleeve (9) in, connecting sleeve (9) are fixed in on independent square foundation (10), independent square foundation (10) are equipped with steel sheet foundatin plate (38) including concrete foundation (39) and steel sheet foundatin plate (38), concrete foundation (39) four rings of outer walls.
6. The fabricated FRP concrete guyed tower-type shock absorption platform of claim 1, wherein: the upper platform structure comprises a plurality of column leg connectors (40), truss upright columns (42) and platform cross braces (43), the platform cross braces (43) are arranged on the truss upright columns (42) in a staggered mode, the column leg connectors (40) are provided with platform cross braces (43) at intersections, the column leg connectors (40) are connected with the FRP concrete combined upright columns (31), and stiffening ribs (4) are arranged at the column leg connectors (40).
7. The fabricated FRP concrete guyed tower-type shock absorption platform of claim 1, wherein: the FRP concrete combined upright post (31), the FRP concrete combined diagonal brace (34) and the FRP concrete combined truss (19) are respectively divided into three forms, wherein the forms comprise core concrete (46), a steel pipe (47) and an FRP pipe (48) from inside to outside in sequence, the forms comprise the core concrete (46), the steel pipe (47), sandwich concrete (49) and the FRP pipe (48) from inside to outside in sequence, and the forms comprise the steel pipe (47), the sandwich concrete (49) and the FRP pipe (48) from inside to outside in sequence.
8. The construction method of the fabricated FRP concrete guyed tower-type damping platform as claimed in claim 1, wherein the method comprises the following steps: the construction method of the FRP concrete composite structure upright post (31) comprises the steps of wrapping a steel pipe (47) by using an outer-layer seamless winding type FRP pipe (48), fixing inner pipes with the radius being the radius of the inner wall of the steel pipe at the two ends of the steel pipe through transverse high-strength bolts, extending out to a designed length, sealing the end ports of the inner pipes at the lower part of the steel pipe, arranging a pouring opening at the top end of the inner pipe at the upper part, pouring self-compacting concrete into the FRP steel pipe, leveling the height of the concrete poured into the FRP steel pipe to the top of the inner pipe, and welding connecting lugs on the two end faces of the steel pipe after the concrete is formed; the FRP concrete combined truss (19) construction method comprises the steps of wrapping a steel pipe (47) by using an outer seamless winding type FRP pipe (48), extending out a designed length from the two ends of the steel pipe through an inner pipe with the radius of a transverse high-strength bolt being the radius of the inner wall of the steel pipe, sealing the end port of the inner pipe at one end of the steel pipe, arranging a pouring opening at the top end of the inner pipe at the other end of the steel pipe, pouring self-compacting concrete into the FRP steel pipe, leveling the height of the concrete poured into the FRP steel pipe with the top of the inner pipe, and welding connecting lugs on the two end faces of the steel pipe after the concrete is formed; the construction method of the integral node (18) comprises the steps of firstly designing a multi-plane node according to design requirements, wrapping the outer wall of the multi-plane node by an outer seamless winding type FRP pipe, reserving embedding spaces at the ends of a vertical half pipe, a horizontal half pipe and an oblique half pipe of a single node, sealing, welding connecting lugs on the end faces of the half pipes, and finally pouring self-compacting concrete into a pouring hole to fill the inner space of the multi-plane node.
9. The construction method of the fabricated FRP concrete guyed tower-type damping platform as claimed in claim 1, wherein the method comprises the following steps: firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting an integral FRP multi-plane node, connecting and fixing the integral FRP multi-plane node through a high-strength bolt, forming a basic truss unit structure, and forming a layered module monomer of a truss by using 5-6 basic truss units; welding a C-shaped sleeve II at the upper end of each set single stand column of the layered module, and placing a rubber gasket into the C-shaped sleeve II; welding a first C-shaped sleeve at the lower end of each single upright post of the set hierarchical module, and installing and fixing a hydraulic fixer on the side wall of each upright post through a high-strength bolt; the upper end surface of the single column of the layering module at the top layer in the layering of the truss is provided with a bolt hole connecting lug and an inner tube with a designed length extending out, self-compacting concrete is poured into the inner tube, and the height of the concrete is equal to the top of the inner tube; forming a bolt hole connecting lug and welding a conical head inner pipe with a designed length on the lower end surface of a single column of a layering module at the bottom layer in the layering of the truss, and pouring self-compacting concrete into the inner pipe until the conical head inner pipe is filled; firstly, sleeving an FRP concrete truss and an FRP concrete upright column prefabricated in a factory into an annular damper, butting FRP integral multi-plane nodes, and connecting and fixing the FRP integral multi-plane nodes through high-strength bolts to form a platform cross brace structure; and welding a column leg connector at the bottom of the platform cross brace according to design requirements.
10. The construction method of the fabricated FRP concrete guyed tower-type damping platform as claimed in claim 1, wherein the method comprises the following steps: firstly, excavating an oil extraction site to a corresponding depth, leveling, placing a template and pouring a square independent foundation, wherein a steel foundation plate with a connecting sleeve is arranged at the upper part of the foundation; after the foundation is formed, arranging the truss layered module monomers prefabricated in a factory in sequence, and transporting the truss layered module monomers to corresponding places on the sea; secondly, sinking the bottom length layering module monomer in the truss layering to a specified position, butting an inner pipe with a conical head at the lower end of the bottom module with 4 connecting sleeves of a square independent foundation, and then screwing the high-strength bolts on the connecting lugs through an underwater robot; then sequentially immersing the layered module monomers into water, completely butting an inner pipe with a conical head at the lower end of the upper layer module monomer with a C-shaped sleeve of the lower layer module monomer, compacting an interface through a hydraulic fixer and screwing a high-strength bolt on a connecting lug by using an underwater robot; when the layered module monomer is assembled to the top layer module, the mooring rope (6) is tied on the mooring rope connecting point (5), and the mooring weight block (11) at the lower end of the mooring rope (6) is placed at a designed position to form a fixing effect on the tower structure; and finally, hoisting the upper structure, butting the lower column leg connecting port of the platform with the inner pipe of the top module of the lower structure, and connecting and welding and fixing the upper column leg connecting port and the inner pipe of the top module through high-strength bolts on the connecting lugs.
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| CN202210029550.0A CN114348192B (en) | 2022-01-13 | Assembled FRP concrete guy cable tower type damping platform and construction method thereof |
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