CN114348197B - Assembled FRP concrete guy cable tower type small displacement platform group and construction method thereof - Google Patents

Assembled FRP concrete guy cable tower type small displacement platform group and construction method thereof Download PDF

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CN114348197B
CN114348197B CN202210040445.7A CN202210040445A CN114348197B CN 114348197 B CN114348197 B CN 114348197B CN 202210040445 A CN202210040445 A CN 202210040445A CN 114348197 B CN114348197 B CN 114348197B
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frp
concrete
box body
platform
pipe
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CN114348197A (en
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计静
张展彬
丁宇奇
姜良芹
王素玲
罗干
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Northeast Petroleum University
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Northeast Petroleum University
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Abstract

An assembled FRP concrete guyed tower type small displacement platform group and a construction method thereof relate to the technical field of building equipment and comprise an FRP concrete truss platform, a plurality of upper module monomers, layered module connecting members, a plurality of lower module monomers and independent square foundations, wherein the upper structure and the lower structure which are respectively formed by the upper module monomers and the lower module monomers are formed by combining the upper module monomers and the lower module monomers through the layered module members; the number of the FRP concrete truss structures is several, and the FRP concrete truss structures are mutually connected through transverse energy dissipation hydraulic rods, and the FRP concrete truss platform upper layer structures are connected; the lower layer structure is connected with an independent square foundation; the top of the FRP concrete truss platform is provided with a damping platform and a small displacement box body. The fabricated FRP concrete guyed tower type small displacement platform group and the construction method thereof have the advantages of simple construction, high assembly efficiency, strong corrosion resistance, good effects of damping and reducing displacement of the platform, repeated utilization and capability of simultaneously drilling crude oil of different strata.

Description

Assembled FRP concrete guy cable tower type small displacement platform group and construction method thereof
Technical field:
the invention relates to the technical field of building equipment, in particular to an assembled FRP concrete guy cable tower type small-displacement platform group and a construction method thereof.
The background technology is as follows:
the guyed tower ocean platform uses a working water area of 240m to 1000m, belongs to a deepwater ocean platform, has a simple structure and relatively small component size compared with a jacket platform, and has stronger adaptability to various environmental loads. As the working application water area is mostly deep sea, the environment is worse, and the platform components have strict requirements on strength, rigidity, stability and corrosion resistance, the guyed tower ocean platform has the characteristics of high manufacturing cost, great difficulty in design, construction and installation technology and the like. Under the current large background of long-term surplus deep water drilling resources, the high manufacturing cost and construction cost make the platform not applied in a large scale.
The invention comprises the following steps:
the invention aims to overcome the defects of the prior art, and provides a novel assembled FRP concrete combined guyed tower type small-displacement platform group system which is simple and convenient to construct, high in assembly efficiency, strong in corrosion resistance, good in platform damping and displacement reduction effects, capable of being repeatedly utilized and capable of simultaneously drilling crude oil of different strata and a construction method thereof
In order to solve the problems existing in the background technology, the invention adopts the following technical scheme: the FRP concrete truss comprises an FRP concrete truss platform, a plurality of upper module monomers, layered module connecting members, a plurality of lower module monomers and independent square foundations, wherein the upper module monomers and the lower module monomers are assembled to form an upper structure and a lower structure of a rigid connection system through integral nodes, ring-type dampers, FRP concrete combined upright posts, FRP concrete combined diagonal braces and FRP concrete combined cross braces respectively, and the upper structure and the lower structure form an FRP concrete truss structure through layered module members; the FRP concrete truss structures are connected with each other through transverse energy dissipation hydraulic rods and are equally distributed on the lower part of the FRP concrete truss platform, and the FRP concrete truss platform is connected with the superstructure through stiffening ribs and column leg connectors at the bottom of the FRP concrete truss platform; the lower layer structure is connected with the independent square foundation through the connecting sleeve; and the top of the FRP concrete truss platform is provided with a damping platform and a small-displacement platform.
One end of the transverse energy dissipation hydraulic rod is hinged with the FRP concrete combined cross brace of one FRP concrete truss structure to form a hinged joint, and the other end of the transverse energy dissipation hydraulic rod is hinged with the FRP concrete combined cross brace of the other FRP concrete truss structure to form another hinged joint; the FRP concrete truss platform is formed by FRP concrete combined trusses.
The integral type node comprises a vertical half pipe, an inclined half pipe and a horizontal half pipe, wherein the top and the bottom of the vertical half pipe are respectively connected with an inner pipe through a ring-type damper, a base plate is arranged on the outer wall of the inner pipe, a high-strength bolt is arranged on the outer wall of the base plate and connected with an FRP concrete combined upright column, the inner pipe is inserted into the FRP concrete combined upright column, and a connecting lug is arranged at the end part of the FRP concrete combined upright column; the side wall of the vertical half pipe is provided with an inclined half pipe and a transverse half pipe, and the inclined half pipe and the transverse half pipe are respectively connected with an FRP concrete combined diagonal bracing and an FRP concrete combined transverse bracing.
The layered module connecting component comprises a first C-shaped sleeve, a second C-shaped sleeve and a hydraulic fixer, wherein 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 an inner pipe through a ring-type damper, 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, the high-strength bolt is connected with an FRP concrete combined upright column, the inner pipe is inserted into the FRP concrete combined upright column, and a connecting lug is arranged at the end part of the FRP concrete combined upright column; 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 an FRP concrete combined diagonal bracing and an FRP concrete combined cross bracing, and the inner pipe with the conical head is arranged at the bottom of the C-shaped sleeve; the second C-shaped sleeve is internally provided with a rubber cushion layer, the outer wall of the second C-shaped sleeve is provided with an inclined half pipe and a transverse half pipe, and the inclined half pipe and the transverse half pipe are respectively connected with an FRP concrete combined diagonal bracing and an FRP concrete combined cross bracing.
The lower structure-foundation connecting member comprises a connecting sleeve, wherein 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 four circles of outer walls of the concrete base.
The vibration-damping platform comprises a vibration-damping box body, wherein a plurality of transverse dampers are arranged on the outer wall of the vibration-damping box body, the transverse dampers are uniformly distributed on the vibration-damping box body, the vibration-damping box body is provided with a plurality of vibration-damping platforms which are uniformly distributed on the FRP concrete truss platform through lead rubber cushion layers and FRP steel plates; the small displacement platform is located at the center of the top of the FRP concrete truss platform and comprises a small displacement box body, an outer layer box body and an inner layer box body, wherein the small displacement box body is arranged in the inner layer box body, the outer side wall of the small displacement box body is connected with the inner wall of the inner layer box body through a transverse damper, the inner layer box body is arranged in the outer layer box body, the outer side wall of the inner layer box body is connected with the inner wall of the outer layer box body through the transverse damper, the small displacement box body, the inner layer box body and the outer side wall of the outer layer box body are penetrated by a shaft button, the small displacement box body is connected with an FRP steel plate through a lead rubber cushion layer, and the bottom of the outer layer box body is connected with the FRP concrete truss platform through a platform connecting port.
The FRP concrete combined upright post, the FRP concrete combined diagonal bracing and the FRP concrete combined cross bracing are respectively divided into three forms, wherein the first form is core concrete, steel pipes and FRP pipes sequentially from inside to outside, the second form is core concrete, steel pipes, interlayer concrete and FRP pipes sequentially from inside to outside, and the third form is steel pipes, interlayer concrete and FRP pipes sequentially from inside to outside.
The construction method of the FRP concrete combined upright post comprises the steps of wrapping a steel pipe with an outer seamless winding type FRP pipe, fixing inner pipes with the radius equal to the radius of the inner wall of the steel pipe at two ends of the steel pipe through transverse high-strength bolts, extending out of the designed length, sealing the 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 of the steel pipe, pouring self-compacting concrete into the FRP steel pipe, leveling the height of the poured concrete in the FRP steel pipe with the top of the inner pipe, and welding connecting lugs at two end surfaces of the steel pipe after the concrete is formed; according to the FRP concrete combined transverse bracing construction method, firstly, a steel pipe is wrapped by an outer seamless winding type FRP pipe, then inner pipes with the radius of the transverse high-strength bolts being the radius of the inner wall of the steel pipe extend out of the designed length, the port of the inner pipe at one end of the steel pipe is sealed, the top end of the inner pipe at the other end of the steel pipe is provided with a pouring port, self-compacting concrete is poured into the FRP steel pipe, the height of the poured concrete in the FRP steel pipe is level with the top of the inner pipe, and after the concrete is formed, connecting lugs are welded at the two end surfaces of the steel pipe; according to the construction method of the integral type node, firstly, a multi-plane node is designed according to design requirements, an outer layer seamless winding type FRP pipe is used for wrapping the outer wall of the multi-plane node, embedded spaces are reserved and sealed at the ends of a vertical half pipe, a horizontal half pipe and an inclined half pipe of a single node, connecting lugs are welded at the end faces of the half pipes, and finally, self-compacting concrete is poured into pouring holes to fill the inner space of the multi-plane node.
According to the construction method of the lower structure, firstly, FRP concrete truss support and FRP concrete columns prefabricated in factories are sleeved into a ring-type damper, and are connected and fixed through high-strength bolts to form a basic truss unit structure, and 5-6 basic truss units form layered module monomers of a truss; then welding a second C-shaped sleeve at the upper end of each set layering module single upright post, and placing a rubber gasket into the second C-shaped sleeve; c-shaped sleeves I are welded at the lower end of each set layering module single upright post, and a hydraulic fixer is installed and fixed on the side wall of each upright post through a high-strength bolt; the upper end face of a layered module single upright post of the top layer in truss layering forms a connecting lug with a bolt hole and an inner pipe with a projected design length, self-compacting concrete is poured into the inner pipe, and the height of the concrete is equal to the top of the inner pipe; forming a conical head inner pipe with a bolt hole connecting lug and a welding design length on the lower end surface of a single column of the layered module of the truss layered middle-bottom layer, and pouring self-compacting concrete into the inner pipe until the conical head inner pipe is filled; according to the superstructure construction method, firstly, FRP concrete truss support and FRP concrete columns prefabricated in factories are sleeved into a ring-type damper, and are connected and fixed through high-strength bolts to form a polygonal truss platform structure; welding a column leg connecting port at the lower part of the truss platform according to the design requirement; three factory prefabricated integrated steel plates and steel boxes are adopted to form a damping box body structure, and a lead rubber cushion layer and a transverse damper are arranged between the damping box body and a truss platform and are fixedly connected through high-strength bolts; the small displacement platform adopts a factory prefabricated integrated steel plate and steel box body to form a small displacement box body, an outer layer box body and an inner layer box body structure, a round hole matched with a shaft button is designed in the middle of the box body, a hinge damper fixed through high-strength bolt connection is arranged, the small displacement box body is connected with one direction of the inner layer box body through the hinge damper and the shaft button, then the outer layer box body is connected with the other direction of the inner layer box body through the hinge damper and the shaft button, the small displacement box body, the shaft button and the inner layer box body form the small displacement platform, and finally the small displacement platform is welded at the central position of the polygonal truss platform.
Firstly, excavating an oil extraction site to a corresponding depth, leveling, placing a template, pouring square independent foundations corresponding to each tower truss monomer, wherein steel foundation plates with connecting sleeves are arranged at the upper parts of the foundations, after the foundations are formed, the truss layering module monomers prefabricated in a factory are sequentially arranged and transported to the corresponding offshore site, next, the bottom layer module monomers in truss layering are sunk to a specified position, the inner pipes with conical heads at the lower ends of the bottom layer modules are butted with the 4 connecting sleeves of the square independent foundations, and high-strength bolts on the connecting lugs are screwed by using an underwater robot; when the layered module is assembled to the top module, a mooring rope is tied at a mooring rope connecting point, and a mooring weight at the lower end of the mooring rope is placed at a designed position to form a fixing effect on the tower structure; lifting the upper structure, butting a column leg connecting port at the lower part of the platform with an inner pipe of a top layer module of the lower structure, and connecting and welding and fixing the column leg connecting port and the inner pipe through high-strength bolts on connecting lugs; and finally, lifting the transverse energy dissipation rod pieces to corresponding positions by adopting a crane, wherein each platform is hinged and connected by two transverse energy dissipation damping rod pieces.
The invention has the advantages that:
1. according to the invention, the FRP concrete structure is applied to the field of offshore platforms, so that the corrosion resistance of the platform structure is greatly improved by the FRP layer, the later maintenance cost of the components is reduced, and the service life of the structure is prolonged; the steel pipe layer restrains the deformation of the inner layer concrete, and fully plays the role of the strength of the concrete; the concrete layer in the member improves the overall rigidity of the structure and reduces the deformation of the lower truss structure under the action of underwater load.
2. Through setting up annular attenuator, truss support, stand deformation performance under the effect of loading has improved, simultaneously, has improved the durability that the member used, and the structure energy dissipation shock attenuation's ability has wholly obtained the promotion.
3. The connection mode of the assembled FRP combined guy cable tower type small displacement platform group structure system is characterized in that integral type node connection upright posts and truss support which are prefabricated in a factory are connected, and the construction process of the guy cable tower type platform structure system is simplified through the mode of inner pipe nested connection and high-strength bolt connection and fixation; the connecting part resists shearing force through the inner pipe, and the high-strength bolt resists tensile force, so that the requirements of strength and deformation of the structure are met; when in offshore site construction, the lower truss structure can simply and rapidly hoist and construct layered module monomers, assemble and butt joint the layered module monomers in sequence, screw down screws by using an underwater robot, and the construction process of the sequential butt joint is simple, short in time consumption and pollution-free; when the platform needs to be disassembled, only layered module monomers need to be disassembled in sequence and transported away, and after being transferred to other destinations, the platform can be directly installed after the foundation is poured and molded, and the platform structure can be disassembled at any time and assembled at any time, so that the effects of recycling and reducing cost are achieved.
4. According to the novel damping platform, the rubber cushion layer and the transverse damper in the novel damping platform separate the damping box body from the truss platform and the lower truss structure, so that the vibration effect of the upper damping box body on the platform in stormy waves is reduced; when the small displacement platform deflects at a small angle, the outer layer box body and the inner layer box body consume external input energy by generating relative angular displacement, and meanwhile, the small displacement box body connected with the inner layer box body through the shaft button still keeps stable. The novel damping platform and small-displacement platform combined mode is adopted, so that the vibration and swinging effects of the platform in stormy waves are reduced, and the stability of the drilling platform and the comfortableness of workers in the working process are ensured.
5. The platform group can simultaneously extract petroleum in different rock layers, so that the working efficiency and the cost are improved; the tower truss monomers are mutually connected by adopting energy dissipation damping rods, so that the stability of the whole drilling platform group during working is ensured.
Description of the drawings:
FIG. 1 is a schematic view of a small displacement box + cross section of the present invention;
FIG. 2 is a schematic view of the inner and outer layer tanks of the small displacement platform of the present invention;
FIG. 3 is a schematic illustration of a small displacement tank platform + cross section of the present invention;
FIG. 4 is a schematic view of a shock truss platform+rubber cushion of the present invention;
FIG. 5 is a schematic view of a shock absorbing small displacement integrated platform of the present invention;
FIG. 6 is a schematic view of a shock absorbing small displacement integrated platform of the present invention from below;
FIG. 7 is a top schematic view of the top module of the present invention;
FIG. 8 is a schematic diagram of a layered module monomer according to the present invention
FIG. 9 is a schematic diagram of a hierarchical module connection of the present invention;
FIG. 10 is a schematic illustration of a hydraulic lever connection of the present invention;
FIG. 11 is a schematic view of a substructure-foundation connection of the present invention;
FIG. 12 is a schematic diagram of a freestanding square foundation in accordance with the present invention;
FIG. 13 is a schematic view of a composite truss connection of the present invention;
FIG. 14 is a schematic view of a damper, high strength bolt shim plate, hydraulic lever of the present invention;
FIG. 15 is a schematic view of a layered module connection member of the present invention;
FIG. 16 is a schematic cross-sectional view of the FRP concrete structure of the invention;
FIG. 17 is a plan view of an assembled guy cable tower type small displacement platform cluster of the present invention.
Reference numerals illustrate: 1 lead rubber cushion layer, 2 transverse dampers, 3 damping platforms, 4 stiffening ribs, 5 mooring rope connection points, 6 mooring ropes, 7FRP concrete truss structure, 8 ring dampers, 9 connecting sleeves, 10 independent square foundations, 11 mooring weights, 12FRP steel plates, 13 damping boxes, 14 small displacement boxes, 15FRP concrete combined trusses, 16C-shaped sleeve two, 17 layered module monomers, 18 integral joints, 19FRP concrete combined crossbrace, 20 basic truss units, 21C-shaped sleeve one, 22FRP tapered head inner pipes, 23 hydraulic retainers, 24 connecting lugs, 25 inner pipes, 26 bolt holes, 27 backing plates, 28 transverse high-strength bolts, 29 transverse energy dissipation hydraulic rods, 30 vertical half pipes, 31FRP concrete combined upright columns, 32 oblique half pipes, 33 transverse half pipes, 34FRP concrete combined diagonal braces, 35 upper layer module monomers, 36 layered module connecting members, 37 lower layer module monomers, 38 steel plate foundation plates, 39 concrete bases, 40 column connection ports, 41 column leg connection points, 42 outer layer boxes, 43 inner layer boxes, 44FRP steel pipe connection ports, 45FRP truss shafts, 46 FRP hinged steel pipe connection joints, 48, 46 FRP core truss shafts, 50, 52, 50 hinged steel pipe connection joints, 50 core concrete platforms
The specific embodiment is as follows:
Referring to the drawings, the present invention specifically adopts the following embodiments: the FRP concrete truss comprises an FRP concrete truss platform 44, a plurality of upper module monomers 35, layered module connecting members 36, a plurality of lower module monomers 37 and an independent square foundation 10, wherein the upper module monomers 35 and the lower module monomers 37 are assembled to form an upper layer structure and a lower layer structure of a rigid connection system through integral nodes 18, ring-type dampers 8, FRP concrete combined upright posts 31, FRP concrete combined diagonal braces 34 and FRP concrete combined cross braces 19 respectively, and the upper layer structure and the lower layer structure form an FRP concrete truss structure 7 through the layered module members 36; the number of the 7 FRP concrete truss structures is several, the 7 FRP concrete truss structures are mutually connected through the transverse energy dissipation hydraulic rods 29 and are equally distributed on the lower part of the FRP concrete truss platform 44, and the FRP concrete truss platform 44 is connected with the superstructure through the stiffening ribs 4 and the column leg connecting ports 40 at the bottom of the FRP concrete truss platform; the lower layer structure is connected with an independent square foundation 10 through a connecting sleeve 9; the top of the FRP concrete truss platform 44 is provided with a damping platform 3 and a small displacement platform. One end of the transverse energy dissipation hydraulic rod 29 is hinged with the FRP concrete combined cross brace 19 of one FRP concrete truss structure 7 to form a hinged joint 51, and the other end of the transverse energy dissipation hydraulic rod 29 is hinged with the FRP concrete combined cross brace 19 of the other FRP concrete truss structure 7 to form another hinged joint 51; the FRP concrete truss platform 44 is formed by an FRP concrete composite truss 15. The integral type node 18 comprises a vertical half pipe 30, an inclined half pipe 32 and a transverse half pipe 33, wherein the top and the bottom of the vertical half pipe 30 are respectively connected with an 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 an FRP concrete combined upright 31, the inner pipe 25 is inserted into the FRP concrete combined upright 31, and a connecting lug 24 is arranged at the end part of the FRP concrete combined upright 31; the side wall of the vertical half pipe 30 is provided with an inclined half pipe 32 and a transverse half pipe 33, and the inclined half pipe 32 and the transverse half pipe 33 are respectively connected with an FRP concrete combined diagonal bracing 34 and an FRP concrete combined diagonal bracing 19. The layered module connecting member 36 comprises a first C-shaped sleeve 21, a second C-shaped sleeve 16 and a hydraulic fixer 23, wherein 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 the 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 the FRP concrete combined upright 31, the inner pipe 25 is inserted into the FRP concrete combined upright 31, and the end part of the FRP concrete combined upright 31 is provided with a connecting lug 24; the side wall of the first C-shaped sleeve 21 is provided with an inclined half pipe 32 and a transverse half pipe 33, the inclined half pipe 32 and the transverse half pipe 33 are respectively connected with an FRP concrete combined diagonal bracing 34 and an FRP concrete combined cross bracing 19, and the bottom of the first C-shaped sleeve 21 is provided with an FRP inner pipe with a conical head 22; the outer wall of the second C-shaped sleeve 16 is provided with an inclined half pipe 32 and a transverse half pipe 33, and 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 cross brace 19. The FRP inner pipe 22 with the conical head, which is arranged at the bottom of the lower layer structure, is inserted into the connecting sleeve 9, the connecting sleeve 9 is fixed on the independent square foundation 10, the independent square foundation 10 comprises a concrete base 39 and a steel plate foundation plate 38, and the steel plate foundation plate 38 is arranged on the outer walls of four circles of the concrete base 39. The vibration reduction platform 3 comprises a vibration reduction box body 13, a plurality of transverse dampers 2 are arranged on the outer wall of the vibration reduction box body 13, the transverse dampers 2 are uniformly distributed on the vibration reduction box body 13, the vibration reduction box body 13 is provided with a plurality of vibration reduction platforms 3 through lead rubber cushion layers 1 and FRP steel plates 12, and the vibration reduction platforms are uniformly distributed on FRP concrete truss platforms 44; the small displacement platform is positioned at the center of the top of the FRP concrete truss platform 44 and comprises a small displacement box body 14, an outer layer box body 42 and an inner layer box body 43, the small displacement box body 14 is arranged in the inner layer box body 43, the outer side wall of the small displacement box body 14 is connected with the inner wall of the inner layer box body 43 through a transverse damper 2, the inner layer box body 43 is arranged in the outer layer box body 42, the outer side wall of the inner layer box body 43 is connected with the inner wall of the outer layer box body 42 through the transverse damper 2, a shaft button 52 penetrates through the small displacement box body 14, the inner layer box body 43 and the side wall of the outer layer box body 42, the small displacement box body 14 is connected with the FRP steel plate 12 through a lead rubber cushion layer 1, the inner layer 43 is connected with the FRP steel plate 12 through the lead rubber cushion layer 1, and the bottom of the outer layer box body 43 is connected with the FRP concrete truss platform 44 through a connecting port 50. The FRP concrete combined upright post 31, the FRP concrete combined diagonal bracing 34 and the FRP concrete combined transverse bracing 19 are respectively divided into three forms, wherein the first form is a core concrete 46, a steel pipe 47 and an FRP pipe 48 in sequence from inside to outside, the second form is a core concrete 46, a steel pipe 47, an interlayer concrete 49 and an FRP pipe 48 in sequence from inside to outside, and the third form is a steel pipe 47, an interlayer concrete 49 and an FRP pipe 48 in sequence from inside to outside. The construction method of the FRP concrete combined column 31 comprises the steps of wrapping a steel pipe 47 by using a wound FRP pipe 48 with a seamless outer layer, fixing inner pipes with the radius of the inner wall of the steel pipe at two ends of the steel pipe through transverse high-strength bolts, extending out of the designed length, sealing the ports of the inner pipes at the lower part of the steel pipe, forming 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 poured concrete in the FRP steel pipe with the top of the inner pipe, and welding connecting lugs at two end surfaces of the steel pipe after the concrete is formed; according to the construction method of the FRP concrete combined cross brace 19, firstly, a steel pipe 47 is wrapped by an outer seamless winding type FRP pipe 48, then two ends of the steel pipe extend out of an inner pipe with the radius of the inner wall of the steel pipe through transverse high-strength bolts, a port of the inner pipe at one end of the steel pipe is sealed, a pouring port is formed in the top end of the inner pipe at the other end of the steel pipe, self-compacting concrete is poured into the FRP steel pipe, the height of the poured concrete in the FRP steel pipe is level with the top of the inner pipe, and connecting lugs are welded at two end surfaces of the steel pipe after the concrete is formed; according to the construction method of the integral type node 18, firstly, a multi-plane node is designed according to design requirements, the outer layer seamless winding type FRP pipe is used for wrapping the outer wall of the multi-plane node, the ends of the vertical half pipe, the transverse half pipe and the inclined half pipe of the single node are reserved with embedded spaces and sealed, the end faces of the half pipes are welded with connecting lugs, and finally, self-compacting concrete is poured into pouring holes to fill the inner space of the multi-plane node. According to the construction method of the lower structure, firstly, FRP concrete truss support and FRP concrete columns prefabricated in factories are sleeved into a ring-type damper, and are connected and fixed through high-strength bolts to form a basic truss unit structure, and 5-6 basic truss units form layered module monomers of a truss; then welding a second C-shaped sleeve at the upper end of each set layering module single upright post, and placing a rubber gasket into the second C-shaped sleeve; c-shaped sleeves I are welded at the lower end of each set layering module single upright post, and a hydraulic fixer is installed and fixed on the side wall of each upright post through a high-strength bolt; the upper end face of a layered module single upright post of the top layer in truss layering forms a connecting lug with a bolt hole and an inner pipe with a projected design length, self-compacting concrete is poured into the inner pipe, and the height of the concrete is equal to the top of the inner pipe; forming a conical head inner pipe with a bolt hole connecting lug and a welding design length on the lower end surface of a single column of the layered module of the truss layered middle-bottom layer, and pouring self-compacting concrete into the inner pipe until the conical head inner pipe is filled; according to the superstructure construction method, firstly, FRP concrete truss support and FRP concrete columns prefabricated in factories are sleeved into a ring-type damper, and are connected and fixed through high-strength bolts to form a polygonal truss platform structure; welding a column leg connecting port at the lower part of the truss platform according to the design requirement; three factory prefabricated integrated steel plates and steel boxes are adopted to form a damping box body structure, and a lead rubber cushion layer and a transverse damper are arranged between the damping box body and a truss platform and are fixedly connected through high-strength bolts; the small displacement platform adopts a factory prefabricated integrated steel plate and steel box body to form a small displacement box body, an outer layer box body and an inner layer box body structure, a round hole matched with a shaft button is designed in the middle of the box body, a hinge damper fixed through high-strength bolt connection is arranged, the small displacement box body is connected with one direction of the inner layer box body through the hinge damper and the shaft button, then the outer layer box body is connected with the other direction of the inner layer box body through the hinge damper and the shaft button, the small displacement box body, the shaft button and the inner layer box body form the small displacement platform, and finally the small displacement platform is welded at the central position of the polygonal truss platform.
Firstly, excavating an oil extraction site to a corresponding depth, leveling, placing a template, pouring square independent foundations corresponding to each tower truss monomer, wherein steel foundation plates with connecting sleeves are arranged at the upper parts of the foundations, after the foundations are formed, the truss layering module monomers prefabricated in a factory are sequentially arranged and transported to the corresponding offshore site, next, the bottom layer module monomers in truss layering are sunk to a specified position, the inner pipes with conical heads at the lower ends of the bottom layer modules are butted with the 4 connecting sleeves of the square independent foundations, and high-strength bolts on the connecting lugs are screwed by using an underwater robot; then when the layered module is assembled to the top module, tying the mooring rope 6at the mooring rope connecting point 5, and placing the mooring weight 11 at the lower end of the mooring rope 6at a designed position to form a fixing effect on the tower structure; lifting the upper structure, butting a column leg connecting port at the lower part of the platform with an inner pipe of a top layer module of the lower structure, and connecting and welding and fixing the column leg connecting port and the inner pipe through high-strength bolts on connecting lugs; and finally, lifting the transverse energy dissipation rod pieces to corresponding positions by adopting a crane, wherein each platform is hinged and connected by two transverse energy dissipation damping rod pieces.
The novel assembled FRP concrete combined guy cable tower type platform group consists of three assembled FRP concrete combined guy cable tower type lower truss single structures and a damping small-displacement integrated platform, wherein the lower truss single structures are mutually hinged and connected through damping rods, the platform and truss single structures of the system are composed of prefabricated FRP concrete combined upright posts, FRP concrete combined truss support and FRP integrated multi-plane nodes, the upper truss structure of the assembled FRP concrete combined guy cable tower type small-displacement platform group is composed of two layers of multi-row FRP concrete combined truss structures, damping box body platforms and small-displacement box body platforms, and the lower structure part of the assembled FRP concrete combined guy cable tower type platform is a tower structure with three square sections; the end part of the FRP concrete combined upright post and the end part of the FRP concrete combined truss support are provided with connecting lugs with bolt holes, and the end part extending inner pipe penetrates through the ring-type damper and then is embedded into the node half pipe and is fixedly connected 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 surface of the half pipe forms a connecting lug, and the connecting lug is provided with a bolt hole; the lower truss structure is composed of a plurality of layered module monomers, and the upper layer module monomers and the lower layer module monomers are connected through truss layered module connecting members and are connected through longitudinal high-strength bolts.
The FRP concrete composite structure forms in the scheme comprise and are not limited to the following modes: comprises an FRP pipe, a steel pipe and core concrete; the concrete consists of an FRP pipe, interlayer concrete, a steel pipe and core concrete; the reinforced plastic composite material consists of an FRP pipe, sandwich concrete and a steel pipe; wherein, the FRP outer layer in the FRP concrete composite structure can prevent the steel pipe and the concrete of the inner layer of the rod piece from being corroded by seawater; the steel pipe and the FRP layer have a constraint deformation effect on the concrete layer; the concrete layer plays a great role in improving the structural rigidity and strength of the rod piece.
In the scheme, the assembled FRP concrete combined guy cable tower type damping platform group consists of three assembled FRP concrete combined guy cable tower type lower truss structure monomers, each truss monomer is hinged and connected through 2 transverse energy dissipation damping rod pieces, and the platform upper structure consists of a damping truss platform formed by three damping platforms and a small-displacement box body platform. The upper structure of the assembled FRP concrete combined guyed tower type small displacement platform is composed of a two-layer multi-row FRP concrete combined truss structure, three damping steel box bodies and a small displacement box body platform, and the FRP concrete combined trusses are connected into a whole through integral multi-plane nodes.
The half pipe of the integral node in the scheme reserves the space for nesting the inner pipe; the half pipe extension 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 half pipe of the single node.
In the above scheme, the FRP steel tube concrete composite column combined with the ring type damper and the FRP steel tube concrete truss support combined with the ring type damper are provided with prefabricated inner tubes at the ends thereof, the inner tubes are fixed by transverse high-strength bolts on the side walls, the radius of the inner tubes is the radius of the inner wall of the FRP steel tube concrete composite column combined with the ring type damper and the FRP steel tube concrete truss support combined with the ring type damper, and the inner tubes penetrate through the ring type damper and are embedded into the single node half tubes and are fixedly connected by the high-strength bolts.
In the scheme, the lower structure tower structure is formed by a plurality of truss layering modules, wherein 5-6 basic truss units are connected to form a layering module monomer with the height of 30 meters. The layered module monomer is easy to hoist and construct, and can be used for fast hoisting and butt-jointing and fixing the underwater structure during offshore assembly.
In the scheme, the truss layering module connecting member is composed of a hydraulic fixer, a C-shaped sleeve 1, a C-shaped sleeve 2, a rubber gasket, an FRP concrete inner pipe with a conical head and high-strength bolts, the C-shaped sleeve 1 and the C-shaped sleeve 2 are respectively welded and fixed at two ends of a vertical column of an upper truss layer and a lower truss layer, the hydraulic fixer is installed and fixed on the side wall of the vertical column of the upper truss layer through the high-strength bolts, the bottom of the vertical column extends out of the welded FRP inner pipe with the conical head, the rubber gasket is arranged at the top of the vertical column of the lower truss layer, the upper truss layer and the lower truss layer are connected in a nested mode through the inner pipes and compacted through the hydraulic fixer, and then are fixed through longitudinal high-strength bolt connection.
The platform superstructure-substructure connecting part of the scheme comprises column leg connecting ports, stiffening ribs, connecting lugs and inner pipes, wherein the radius of the inner pipes is the radius of the inner walls of the column leg connecting ports, the stiffening ribs are distributed in a cross shape along the outer walls of the column leg connecting ports, and the connecting parts are nested by the inner pipes and are fixedly connected through longitudinal high-strength bolts.
The upper platform structure part of the shock-absorbing truss platform in the scheme comprises an FRP concrete truss structure platform and a shock-absorbing box body platform, wherein the shock-absorbing box body platform is arranged at the top part of the top module monomer, is connected with a lead rubber pad through a transverse damper and is fixedly connected with the lead rubber pad through a high-strength bolt.
The small displacement platform arranged in the center of the truss platform consists of a small displacement box body and an FRP double-layer steel plate box body, wherein the small displacement box body consists of an integrated steel box body and a steel plate; the FRP double-layer steel plate box body consists of an outer layer box body and an inner layer steel plate box body, the outer layer of the outer layer box body is an FRP layer, meanwhile, the small-displacement box body is connected with one direction of the inner layer box body through a hinged damper and a shaft button, and the outer layer box body is connected with the other direction of the inner layer box body through the hinged damper and the shaft button, so that a small-displacement platform is formed.
In the scheme, the lower structure-foundation connecting part of the platform consists of three square independent foundations with connecting sleeves and FRP concrete inner pipes with conical heads, the three square independent foundations and the FRP concrete inner pipes are connected in a nested manner, and then the three square independent foundations and the FRP concrete inner pipes are connected and fixed through longitudinal high-strength bolts.
The construction method of the assembled FRP concrete combined guyed tower type small-displacement platform group system comprises the following steps:
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 a winding type FRP pipe with a seamless outer layer, then arranging inner pipes with the radius of the inner wall of the steel pipe at two ends of the steel pipe, extending out of the designed length, and connecting and fixing the steel pipe by using a transverse high-strength bolt on the side wall of the steel pipe. Sealing the port of the inner pipe at the lower part of the steel pipe, forming a pouring port at the top end of the inner pipe at the upper part, pouring self-compacting concrete into the FRP steel pipe, leveling the poured concrete in the FRP steel pipe with the top of the inner pipe, and welding connecting lugs at the two end surfaces of the steel pipe after the concrete is formed; according to the construction method for prefabricating truss support of the FRP concrete combined structure, firstly, a steel pipe is wrapped by an outer seamless winding type FRP pipe, then inner pipes with the radius being the radius of the inner wall of the steel pipe are arranged at two ends of the steel pipe, the designed length is extended, and the steel pipe is fixedly connected through transverse high-strength bolts on the side wall of the steel pipe. The port of the inner tube at one end of the steel tube is sealed, the top of the inner tube at the other end is provided with a pouring port, self-compacting concrete is poured into the FRP steel tube, the height of the poured concrete in the FRP steel tube is equal to the top of the inner tube, and after the concrete is formed, connecting lugs are welded at the two end surfaces of the steel tube.
The construction method of the prefabricated integral multi-plane node of the FRP concrete composite structure comprises the following steps: 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 FRP pipe, reserving embedded spaces at the ends of a vertical half pipe, a horizontal half pipe and an inclined half pipe of a single node, sealing, and welding connecting lugs at the end surfaces of the half pipes. And finally, pouring self-compacting concrete into the pouring holes until the inner space of the multi-plane node is filled.
The construction method of the upper structure of the assembled FRP combined guy cable tower type platform group comprises the following steps: firstly, sleeving FRP concrete truss support and FRP concrete upright posts prefabricated in a factory into a ring-type damper, butting the integral multi-plane FRP nodes, and connecting and fixing the integral multi-plane FRP nodes through high-strength bolts to form a polygonal truss platform structure, wherein column leg connectors are welded at the lower part of the truss platform according to design requirements; the three damping box body platforms are welded into an integrated box body by steel plates, high-strength bolt holes are arranged at the positions where the dampers are connected, and the damping box body platforms are fixedly connected with the transverse dampers, the lead rubber pads and the truss platforms through the high-strength bolts to form a damping truss platform; the small displacement platform adopts a factory prefabricated integrated steel plate and steel box body to form a small displacement box body, an outer layer box body and an inner layer box body structure, a round hole matched with a shaft button is designed in the middle of the box body, a hinge damper fixed through high-strength bolt connection is arranged, the small displacement box body is connected with one direction of the inner layer box body through the hinge damper and the shaft button, then the outer layer box body is connected with the other direction of the inner layer box body through the hinge damper and the shaft button, the small displacement box body, the shaft button and the inner layer box body form the small displacement platform, and finally the small displacement platform is welded at the central position of the polygonal truss platform.
The construction method of the assembled FRP combined guy cable tower type small-displacement platform group system comprises the following steps: excavating an oil extraction site to a corresponding depth, leveling, placing templates, and pouring square independent foundations corresponding to each tower truss single body, wherein a steel foundation plate with a connecting sleeve is arranged on the upper part of the foundation. After the foundation is formed, the truss layering module single bodies prefabricated in the factory are arranged in sequence and transported to corresponding places on the sea. Firstly, sinking a single bottom layer module in truss layering 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 screwing high-strength bolts on connecting lugs by using an underwater robot; when the layered module is assembled to the top module, a mooring rope is tied at the connection part of the mooring rope, and a mooring weight at the lower end of the mooring rope is placed at a designed position to form a fixing effect on the tower structure; lifting the upper structure, butting a column leg connecting port at the lower part of the platform with an inner pipe of a top layer module of the lower structure, and connecting and welding and fixing the column leg connecting port and the inner pipe through high-strength bolts on connecting lugs; and finally, lifting the transverse energy dissipation rod pieces to corresponding positions by adopting a crane, wherein each platform is hinged and connected by two transverse energy dissipation damping rod pieces.
Example 1:
as shown in fig. 13, 16, 14 and 16, the novel assembled FRP concrete combined guyed tower platform structure system is composed of prefabricated FRP concrete combined upright posts, FRP concrete combination truss support and FRP integral type multi-plane nodes, wherein the integral type multi-plane nodes are composed of transverse half pipes, vertical half pipes and inclined half pipes which are intersected, connecting lugs are formed on the extending end surfaces, and bolt holes are formed on the connecting lugs; the FRP concrete combined upright post and the FRP concrete combined truss support are provided with connecting lugs with bolt holes, and an inner pipe extending from the end part penetrates through the ring-type damper and then is embedded into the node half pipe and is fixedly connected through high-strength bolts. As in fig. 4, the component nodes of the superstructure truss platform are all formed in combination in the manner described above.
The construction method in this embodiment is as follows:
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 using an outer seamless winding FRP pipe, reserving embedded 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 at the end faces of the half pipes. Finally, pouring concrete into the pouring holes to fill the inner 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 a wound FRP pipe with a seamless outer layer, then arranging inner pipes with the radius of the inner wall of the steel pipe at two ends of the steel pipe, extending out of the designed length, connecting and fixing the inner pipes through transverse high-strength bolts on the side wall of the steel pipe, sealing the port of the inner pipe at the lower part of the steel pipe, arranging a pouring port at the top end of the inner pipe at the upper part of the steel pipe, pouring self-compacting concrete into the FRP steel pipe, leveling the height of the poured concrete in the FRP steel pipe with the top of the inner pipe, and welding connecting lugs at two end surfaces of the steel pipe after the concrete is formed;
According to the construction method for prefabricating truss support of the FRP concrete composite structure, firstly, a steel pipe is wrapped by an outer seamless winding type FRP pipe, then inner pipes with the radius equal to the radius of the inner wall of the steel pipe are arranged at two ends of the steel pipe, the design length is extended, the steel pipe is fixedly connected through transverse high-strength bolts on the side wall of the steel pipe, an inner pipe port at one end of the steel pipe is sealed, a pouring port is formed in the top end of the inner pipe at the other end, 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 connecting lugs are welded at two end surfaces of the steel pipe after the concrete is formed.
Example 2:
as shown in fig. 1,2, 3,4, 5,6 and 10, the assembled FRP concrete combined guyed tower type small displacement platform group is composed of three assembled FRP concrete combined guyed tower truss monomers and a shock absorption small displacement integrated platform, the lower parts of the truss monomers are connected through 2 transverse energy dissipation damping rods, the spatial layout of an upper structure platform is in polygonal arrangement, wherein the upper parts of the three truss monomers are connected with the shock absorption truss platform, the shock absorption platform is composed of an integrated steel box body and a steel plate, and the shock absorption platform is connected with the truss platform through a lead rubber cushion layer and a transverse damper; the small displacement platform positioned in the center of the truss platform consists of a small displacement box body and an FRP double-layer steel plate box body, wherein the small displacement box body consists of an integrated steel box body and a steel plate; the FRP double-layer steel plate box body consists of an outer layer box body and an inner layer steel plate box body, the outer layer of the outer layer box body is an FRP layer, meanwhile, the small-displacement box body is connected with one direction of the inner layer box body through a hinged damper and a shaft button, the outer layer box body is connected with the other direction of the inner layer box body through the hinged damper and the shaft button, the small-displacement box body, the inner layer box body and the shaft button form a small-displacement platform, a rubber layer is arranged at the bottom of the small-displacement box body steel plate, and the platform is prevented from being damaged by collision with the inner layer box body and the outer layer box body.
Example 3:
As shown in fig. 8, 9, 12, 13 and 15, the lower tower structure is composed of a plurality of truss layering modules, wherein 5-6 basic truss units are connected to form a layering module unit with a height of 30 m. The connecting component of lower truss structure layering module comprises hydraulic pressure fixer, C type sleeve 1, C type sleeve 2, rubber gasket, take conical FRP concrete inner tube, high strength bolt, and C type sleeve 1, C type sleeve 2 welded fastening respectively are in upper and lower truss's stand both ends, and the lateral wall of upper truss stand sets up hydraulic pressure fixer, and the FRP inner tube of bottom welding area conical head is equipped with rubber gasket at the top of lower truss stand.
The construction method in this embodiment is as follows:
Firstly, sleeving FRP concrete truss support and FRP concrete upright posts prefabricated in a factory into a ring-type damper, butting the integral multi-plane FRP nodes, and connecting and fixing the integral multi-plane FRP nodes through high-strength bolts to form basic truss units, wherein 5-6 basic truss units form a truss layering module unit; and then welding a C-shaped sleeve 2 at the upper end of each set single-layer module upright post, placing a rubber gasket into the C-shaped sleeve 2, welding a C-shaped sleeve 1 at the lower end of the upright post, fixing a hydraulic fixer on the side wall of the upright post through a high-strength bolt, nesting and connecting an upper-lower-layer module single structure with an inner pipe, compacting by the hydraulic fixer, and fixing through longitudinal high-strength bolt connection.
Example 4:
as shown in fig. 11 and 12, the lower 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 is connected in a nested manner by the inner pipe and is fixed by longitudinal high-strength bolt connection.
The construction method in this embodiment is as follows:
Forming a connecting lug with a bolt hole and an FRP inner pipe with a conical head by welding the designed length on the lower end surface of the upright post of the middle-bottom layer module of the lower part structure layering, and then pouring concrete into the inner pipe until the inner pipe with the conical head is filled; when the underwater robot works, after 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 the square independent foundation, the high-strength bolts on the connecting lugs are screwed up through the underwater robot.
Example 5:
Fig. 17 is a schematic plan and space view of an assembled FRP composite guyed tower platform assembly consisting of a plurality of platform units, and fig. 10, the lower truss units being hingedly connected by hydraulic rods.
The construction method in this embodiment is as follows:
Excavating an oil extraction site to a corresponding depth, leveling, placing templates, and pouring square independent foundations corresponding to each tower truss single body, wherein a steel foundation plate with a connecting sleeve is arranged on the upper part of the foundation. After the foundation is formed, the truss layering module single bodies prefabricated in the factory are arranged in sequence and transported to corresponding places on the sea. Firstly, sinking a single bottom layer module in truss layering 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 screwing high-strength bolts on connecting lugs by using an underwater robot; when the layered module is assembled to the top module, a mooring rope is tied at the connection part of the mooring rope, and a mooring weight at the lower end of the mooring rope is placed at a designed position to form a fixing effect on the tower structure; lifting the upper structure, butting a column leg connecting port at the lower part of the platform with an inner pipe of a top layer module of the lower structure, and connecting and welding and fixing the column leg connecting port and the inner pipe through high-strength bolts on connecting lugs; and finally, lifting the transverse energy dissipation rod pieces to corresponding positions by adopting a crane, wherein each platform is hinged and connected by two transverse energy dissipation damping rod pieces.
In summary, the FRP concrete structure is applied to the field of offshore platforms, and the FRP layer greatly improves the corrosion resistance of the platform structure, reduces the later maintenance cost of components and prolongs the service life of the structure; the steel pipe layer restrains the deformation of the inner layer concrete, and fully plays the role of the strength of the concrete; the concrete layer in the member improves the overall rigidity of the structure and reduces the deformation of the lower truss structure under the action of underwater load. Through setting up annular attenuator, truss support, stand deformation performance under the effect of loading has improved, simultaneously, has improved the durability that the member used, and the structure energy dissipation shock attenuation's ability has wholly obtained the promotion. The connection mode of the assembled FRP combined guy cable tower type small displacement platform group structure system is characterized in that integral type node connection upright posts and truss support which are prefabricated in a factory are connected, and the construction process of the guy cable tower type platform structure system is simplified through the mode of inner pipe nested connection and high-strength bolt connection and fixation; the connecting part resists shearing force through the inner pipe, and the high-strength bolt resists tensile force, so that the requirements of strength and deformation of the structure are met; when in offshore site construction, the lower truss structure can simply and rapidly hoist and construct layered module monomers, assemble and butt joint the layered module monomers in sequence, screw down screws by using an underwater robot, and the construction process of the sequential butt joint is simple, short in time consumption and pollution-free; when the platform needs to be disassembled, only layered module monomers need to be disassembled in sequence and transported away, and after being transferred to other destinations, the platform can be directly installed after the foundation is poured and molded, and the platform structure can be disassembled at any time and assembled at any time, so that the effects of recycling and reducing cost are achieved. According to the novel damping platform, the rubber cushion layer and the transverse damper in the novel damping platform separate the damping box body from the truss platform and the lower truss structure, so that the vibration effect of the upper damping box body on the platform in stormy waves is reduced; when the small displacement platform deflects at a small angle, the outer layer box body and the inner layer box body consume external input energy by generating relative angular displacement, and meanwhile, the small displacement box body connected with the inner layer box body through the shaft button still keeps stable in a mode of combining the novel damping platform and the small displacement platform, so that the vibration and swinging effects of the platform in stormy waves and the self of the platform are reduced, and the stability of the drilling platform and the comfortableness of workers in the working process are ensured. The platform group can simultaneously extract petroleum in different rock layers, so that the working efficiency and the cost are improved; the tower truss monomers are mutually connected by adopting energy dissipation damping rods, so that the stability of the whole drilling platform group during working is ensured.

Claims (6)

1. An assembled FRP concrete guy cable tower type small displacement platform group which is characterized in that: the FRP concrete truss comprises an FRP concrete truss platform (44), a plurality of upper module monomers (35), layered module connecting members (36), a plurality of lower module monomers (37) and independent square foundations (10), wherein the upper structure and the lower structure of the rigid connection system are formed by assembling the upper module monomers (35) and the lower module monomers (37) through integral nodes (18), ring-type dampers (8), FRP concrete combined upright posts (31), FRP concrete combined diagonal braces (34) and FRP concrete combined cross braces (19), and the FRP concrete truss structure (7) is formed by the layered module connecting members (36); the FRP concrete truss structures (7) are connected through transverse energy dissipation hydraulic rods (29) and are equally distributed at the lower part of the FRP concrete truss platform (44), and the FRP concrete truss platform (44) is connected with the superstructure through stiffening ribs (4) and column leg connectors (40) at the bottom of the FRP concrete truss platform; the lower layer structure is connected with an independent square foundation (10) through a connecting sleeve (9); the top of the FRP concrete truss platform (44) is provided with a damping platform (3) and a small-displacement platform; the integral type node (18) comprises a vertical half pipe (30), an inclined half pipe (32) and a transverse half pipe (33), wherein 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 base 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 base plate (27), 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 a connecting lug (24) is arranged at the end part of the FRP concrete combined column (31); the side wall of the vertical half pipe (30) is provided with an inclined half pipe (32) and a transverse half pipe (33), and 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 diagonal brace (19); the layered module connecting component (36) comprises a first C-shaped sleeve (21), a second C-shaped sleeve (16) and a hydraulic fixer (23), wherein 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-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 the FRP concrete combined upright (31), the inner pipe (25) is inserted into the FRP concrete combined upright (31), and a connecting lug (24) is arranged at the end part of the FRP concrete combined upright (31); the side wall of the C-shaped sleeve I (21) is provided with an inclined half pipe (32) and a transverse half pipe (33), 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 diagonal brace (19), and the bottom of the C-shaped sleeve I (21) is provided with an FRP cone head inner pipe (22); the outer wall of the C-shaped sleeve II (16) is provided with an inclined half pipe (32) and a transverse half pipe (33), and the inclined half pipe (32) and the transverse half pipe (33) are respectively connected with an FRP concrete combined diagonal bracing (34) and an FRP concrete combined diagonal bracing (19).
2. The fabricated FRP concrete guy-cable tower type small displacement platform cluster of claim 1, wherein: one end of the transverse energy dissipation hydraulic rod (29) is hinged with the FRP concrete combined cross brace (19) of one FRP concrete truss structure (7) to form a hinged joint (51), and the other end of the transverse energy dissipation hydraulic rod (29) is hinged with the FRP concrete combined cross brace (19) of the other FRP concrete truss structure (7) to form another hinged joint (51); the FRP concrete truss platform (44) is formed by an FRP concrete combined truss (15).
3. The fabricated FRP concrete guy-cable tower type small displacement platform cluster of claim 1, wherein: FRP that the understructure bottom was equipped with takes conical head inner tube (22) insert in connecting sleeve (9), connecting sleeve (9) are fixed in on independent square basis (10), independent square basis (10) include concrete base (39) and steel sheet foundation plate (38), four outer walls of concrete base (39) are equipped with steel sheet foundation plate (38).
4. The fabricated FRP concrete guy-cable tower type small displacement platform cluster of claim 1, wherein: the vibration reduction platform (3) comprises a vibration reduction box body (13), a plurality of transverse dampers (2) are arranged on the outer wall of the vibration reduction box body (13), the transverse dampers (2) are uniformly distributed on the vibration reduction box body (13), the vibration reduction box body (13) is provided with a plurality of vibration reduction platforms (3) through lead rubber cushion layers (1) and FRP steel plates (12), and the vibration reduction platforms (3) are uniformly distributed on FRP concrete truss platforms (44); the small displacement platform is located at the center of the top of the FRP concrete truss platform (44), the small displacement platform comprises a small displacement box body (14), an outer layer box body (42) and an inner layer box body (43), the small displacement box body (14) is arranged in the inner layer box body (43), the outer side wall of the small displacement box body (14) is connected with the inner wall of the inner layer box body (43) through a transverse damper (2), the inner layer box body (43) is arranged in the outer layer box body (42), the outer side wall of the inner layer box body (43) is connected with the inner wall of the outer layer box body (42) through the transverse damper (2), the shaft button (52) penetrates through the side walls of the small displacement box body (14), the inner layer box body (43) and the outer layer box body (42), the small displacement box body (14) is connected with an FRP steel plate (12) through a lead rubber cushion layer (1), and the bottom of the outer layer box body (43) is connected with the FRP concrete truss platform (44) through a platform connecting port (50).
5. The fabricated FRP concrete guy-cable tower type small displacement platform cluster of claim 1, wherein: the FRP concrete combined upright post (31), the FRP concrete combined diagonal bracing (34) and the FRP concrete combined transverse bracing (19) are respectively divided into three forms, wherein the first form is core concrete (46), steel pipes (47) and FRP pipes (48) sequentially from inside to outside, the second form is core concrete (46), steel pipes (47), interlayer concrete (49) and FRP pipes (48) sequentially from inside to outside, and the third form is steel pipes (47), interlayer concrete (49) and FRP pipes (48) sequentially from inside to outside.
6. A method of constructing an assembled FRP concrete guyed tower type small displacement platform group according to claim 5, characterized in that: the construction method of the FRP concrete combined column (31) comprises the steps of wrapping a steel pipe (47) by using an outer seamless winding type FRP pipe (48), fixing inner pipes with the radius equal to the radius of the inner wall of the steel pipe at two ends of the steel pipe through transverse high-strength bolts, extending out of the designed length, sealing ports of the inner pipes at the lower part of the steel pipe, arranging pouring ports at the top end of the inner pipes at the upper part, pouring self-compacting concrete into the FRP steel pipe, leveling the height of the poured concrete in the FRP steel pipe with the top of the inner pipes, and welding connecting lugs at two end surfaces of the steel pipe after the concrete is formed; according to the construction method of the FRP concrete combined cross brace (19), firstly, a steel pipe (47) is wrapped by an outer seamless winding type FRP pipe (48), then, inner pipes with the radiuses of the inner walls of the steel pipe are fixed at two ends of the steel pipe through transverse high-strength bolts, the designed length is extended, the ports of the inner pipes at one end of the steel pipe are sealed, pouring ports are formed in the top ends of the inner pipes at the other end of the steel pipe, 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 pipes, and connecting lugs are welded at two end surfaces of the steel pipe after the concrete is formed.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07300817A (en) * 1994-05-09 1995-11-14 Nippon Steel Corp Concrete filled steel pipe truss bridge pier and its construction method
CN101177966A (en) * 2007-12-06 2008-05-14 合肥工业大学 Hollow double-layer FRP pipe concrete combination structure
CN102747781A (en) * 2012-07-31 2012-10-24 东北石油大学 Fiber reinforce plastic (FRP) combination structure frame where integral type node is adopted and construction method thereof
CN204688372U (en) * 2015-06-08 2015-10-07 上海海洋大学 Truss-like oil production platform
CN107237398A (en) * 2017-06-26 2017-10-10 江南大学 A kind of new multi and tall steel building assembled combined structure system
CN110552538A (en) * 2019-09-18 2019-12-10 东北石油大学 Super-large orthogonal truss cable-girder heat-insulation aluminum alloy combined storage tank and construction method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07300817A (en) * 1994-05-09 1995-11-14 Nippon Steel Corp Concrete filled steel pipe truss bridge pier and its construction method
CN101177966A (en) * 2007-12-06 2008-05-14 合肥工业大学 Hollow double-layer FRP pipe concrete combination structure
CN102747781A (en) * 2012-07-31 2012-10-24 东北石油大学 Fiber reinforce plastic (FRP) combination structure frame where integral type node is adopted and construction method thereof
CN204688372U (en) * 2015-06-08 2015-10-07 上海海洋大学 Truss-like oil production platform
CN107237398A (en) * 2017-06-26 2017-10-10 江南大学 A kind of new multi and tall steel building assembled combined structure system
CN110552538A (en) * 2019-09-18 2019-12-10 东北石油大学 Super-large orthogonal truss cable-girder heat-insulation aluminum alloy combined storage tank and construction method

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