CN210368909U - Assembly type aluminum pipe-confined concrete-steel pipe combined jacket ocean platform - Google Patents

Abstract

The utility model discloses an assembled aluminum pipe-confined concrete-steel pipe combination jacket platform and preparation method thereof belongs to civil engineering's structural engineering technical field. The technical scheme is as follows: the platform is arranged on the jacket, the jacket comprises guide pipes, platform cross braces and platform diagonal braces, the guide pipes are arranged in the vertical direction, a plurality of platform cross braces and platform diagonal braces are respectively arranged between the guide pipes and inside the platform, the top end of each guide pipe is connected with the platform, the bottom end of each guide pipe is fixedly connected to the seabed, and each guide pipe comprises a plurality of connected guide pipe units; the conduit unit is an aluminum pipe-confined concrete-steel pipe double-wall hollow member. The utility model discloses the complicated process of welding has been avoided under water effectively to and the potential safety hazard that welding strength brought inadequately. Meanwhile, the advantage that the assembly structure is easy to disassemble enables the cyclic utilization of the ocean platform to be possible, and the assembly modularization of the ocean platform structure is realized.

Description

Assembly type aluminum pipe-confined concrete-steel pipe combined jacket ocean platform

Technical Field

The utility model relates to a civil engineering's structural engineering technical field, concretely relates to assembled aluminum pipe-confined concrete-steel pipe combination jacket platform and preparation method thereof.

Background

The ocean platform is used as an infrastructure for ocean resource development, wherein the ducted ocean platform is the main structural form of the ocean platform in the middle and shallow sea. The pile is inserted through the guide pipe to fix the prefabricated jacket on the sea, the jacket and the pile are main bearing parts, and other equipment layers and working areas are located on the platform. Under the action of dynamic loads of marine environments such as wind, wave, flow, ice, earthquake and the like, the vibration reaction of the structure is very violent.

In the existing feasible technical scheme, aiming at the vibration control of the ducted offshore platform structure, on one hand, vibration isolation measures or various dampers are mainly adopted for resisting vibration, but although the vibration isolation measures can better control the displacement of the end cap of the ducted offshore platform and the acceleration of a living area, the vibration isolation measures are not suitable for loads such as tsunamis, hurricanes and the like and are easy to overturn.

Another aspect is to improve the structural form. The conventional structural form does not meet the structural design requirement, more and more combined structural forms are applied to practical engineering, the combined structure inherits the respective advantages of a steel structure and a reinforced concrete structure, the defects of the steel structure and the reinforced concrete structure are overcome, a novel system structure is generated, the characteristics of steel and concrete can be fully utilized, and an optimal combined member is formed according to the optimal geometric dimension. The method has the advantages of light weight, good ductility of the member, reduced sectional area, shortened construction period and the like. In a combined structure, the concrete-filled steel tube is applied in a relatively large number of structural forms, and the concrete-filled steel tube is scientifically used according to local conditions, so that the requirements of large span, high rise and heavy load of related engineering structures can be met, the industrialization requirement of modern construction technology is met, and the concrete-filled steel tube structure is favored by the engineering community due to high performance in the aspects of stress, construction and the like.

Although the fabricated building is greatly popularized in China, for the field of ocean platform structures, the transition from a conventional design and construction mode to a fabricated structure mode still needs to be solved urgently. The Chinese patent with the application number of CN201510351272.0 provides a self-resetting jacket offshore platform, wherein a pipe structure comprises an outer steel pipe, an inner steel pipe, a corrugated pipe and sandwich concrete, and prestressed external steel pull rods are additionally arranged inside the corrugated pipe and outside the platform, so that self-resetting under the load action of sea ice, earthquake and the like is realized. But all require the welding process among the work progress, this to the thick wall of steel pipe concrete, brought very big degree of difficulty for the welding process on the one hand, on the other hand the welding of steel pipe is unilateral welding, and welding joint strength can not reach the requirement to bring the potential safety hazard. However, if a welding mode is not adopted, the beam-column joint is also an important stress and force transmission component in a structural system, so the assembly of the column-column connection joint of the large-diameter concrete-filled steel tube, the column-column connection of the concrete-filled steel tube and the assembly of the column-cross (inclined) strut connection joint are problems to be solved.

Still another scholars have proposed that self-elevating ocean platform prefabricated assembly type spud leg, including stainless steel outer tube and high strength circular steel tube, although the structural style reaches the requirement of assembly type structure, but admittedly, single steel-pipe column obviously is not as high as the bearing capacity of double-walled hollow steel-pipe concrete combination column.

Therefore, the assembly of the concrete-filled steel tube system still lacks a new form, and the design of the node connecting device which can meet the seismic performance requirements of 'strong nodes and weak members' and can realize the assembly modularization of the ocean platform structure is a problem to be solved urgently in the field of structural engineering.

SUMMERY OF THE UTILITY MODEL

To the above deficiency of the prior art, the utility model provides an assembled aluminum pipe-restraint concrete-steel pipe combination jacket platform has avoided underwater welding's complicated process effectively to and the not enough potential safety hazard that brings of welding strength. Meanwhile, the advantage that the assembly structure is easy to disassemble enables the cyclic utilization of the ocean platform to be possible, and the assembly modularization of the ocean platform structure is realized.

The technical scheme of the utility model is that:

the assembled aluminum pipe-confined concrete-steel pipe combined jacket ocean platform consists of a jacket and a platform, wherein the platform is installed on the jacket, the jacket comprises guide pipes, platform cross braces and platform diagonal braces, the guide pipes are arranged in the vertical direction, a plurality of platform cross braces and platform diagonal braces are arranged between the guide pipes, the top ends of the guide pipes are connected with the platform, and the bottom ends of the guide pipes are fixedly connected to the seabed; the guide pipe comprises a plurality of connected guide pipe units, each guide pipe unit comprises an external constraint aluminum pipe and an internal steel pipe, the external constraint aluminum pipe is made of aluminum, the corrosion resistance of the aluminum alloy is fully utilized, and the problem that the guide pipe is corroded by seawater is effectively solved; the outer constraint aluminum pipe and the inner steel pipe are coaxially sleeved, interlayer constraint concrete is filled between the outer constraint aluminum pipe and the inner steel pipe, two end faces of the inner steel pipe are higher than those of the outer constraint aluminum pipe, and two ends of the inner steel pipe are respectively provided with annular convex limbs along the outer circumference; the conduit units, the conduit units and the platform cross brace, and the conduit units and the platform diagonal brace are fixedly connected through nodes, the node comprises two connecting parts which are symmetrically connected, each connecting part comprises a clamping part and lug plates arranged on two sides of the clamping part, the clamping part is a box body with an opening on one side and comprises an upper top plate, two side plates, a back plate and a lower top plate, the inside of the clamping part is positioned between the upper top plate and the lower top plate, an upper clapboard and a lower clapboard are respectively arranged from top to bottom, the upper top plate and the lower top plate are both provided with grooves, the convex limbs can be clamped into gaps between the upper top plate and the upper clapboard as well as between the lower clapboard and the lower top plate through the grooves, the lug plate is provided with a high-strength bolt hole, the two connecting parts are connected through the high-strength bolt hole on the lug plate by bolts, and the two side plates and the back plate of the clamping part are respectively provided with a single-side bolt hole for fixedly connecting the platform cross brace and the platform inclined brace. The platform cross brace and the platform diagonal brace are fastened on the side plates of the nodes and the bolt holes reserved in the back plate through unilateral bolts, the assembly process is efficient and quick in operation, and the lengths of the guide pipe, the platform cross brace and the platform diagonal brace can be determined according to the sizes of all layers of the designed platform. The node is formed by two connecting portions through high-strength bolt connection in an assembling mode, the protruding limbs of the upper guide pipe unit and the lower guide pipe unit are fixed between the upper top plate and the upper partition plate of the node, the lower partition plate of the node and the lower top plate of the node through the grooves respectively, the node and the protruding limbs are tightly combined in the mode, stability is good, high-strength bolt connection is adopted, and connection strength can be improved. The top of pipe is passed through the ring flange node and is connected with the platform, the ring flange node includes the flange steel pipe, the one end of flange steel pipe is equipped with annular first flange board of circle along outer circumference, and the other end is equipped with annular second flange board of circle along interior circumference, and the side is equipped with the cantilever web, between first flange board and the platform, between second flange board and the protruding limb to and pass through high strength bolt connection respectively between cantilever web and the platform stull.

Furthermore, rubber pads are respectively adhered to the contact surfaces of the upper partition plate and the convex limbs of the joint and the contact surfaces of the lower partition plate and the convex limbs, so that impact generated when the conduit units at the upper end and the lower end of the joint are installed can be buffered conveniently.

Furthermore, the high-strength bolt is a friction type high-strength bolt, so that relative sliding among all connecting parts is avoided, and the connection is more tight.

Furthermore, the node adopts cast aluminum node or cast iron node, and pipe, platform stull and platform bracing are assembled through cast aluminum node or cast iron node connection, are favorable to the processing, transportation, hoist and mount and the on-the-spot installation of assembled structural component.

Furthermore, the cast aluminum node or the cast iron node and the flange plate node are integrally cast.

Further, the inner steel pipe is a seamless steel pipe.

The utility model also provides a manufacturing method of assembled aluminium pipe-confined concrete-steel pipe combination jacket platform, including following step:

(1) manufacturing a catheter: inserting an inner steel pipe into the external constraint aluminum pipe, pouring interlayer constraint concrete, and assembling the plurality of conduit units into 4 conduits through cast aluminum nodes or cast iron nodes after the strength of the poured interlayer constraint concrete meets the requirement;

(2) manufacturing a jacket: fixing the platform cross brace and the platform diagonal brace on a cast aluminum node or a cast iron node of the guide pipe respectively through a unilateral bolt;

(3) assembling a platform: after the platform is prefabricated in a factory, the platform is transported to an offshore construction site through lightering or floating, the steel piles and the guide pipes are driven into the seabed after the platform is in place, and then the platform is connected to the top ends of the guide pipes through flange joints.

Furthermore, two end faces of the inner steel pipe are higher than two end faces of the external constraint aluminum pipe, and two ends of the inner steel pipe are respectively provided with annular convex limbs along the outer circumference; cast aluminium node or cast iron node include the connecting portion of two symmetric connections, connecting portion include joint portion and the otic placode of setting in joint portion both sides, joint portion is one side open-ended box body, including last roof, two curb plates, backplate and roof down, the inside of joint portion is located between roof and the roof down, from the top down is equipped with baffle and lower baffle respectively, all be equipped with the recess on going up roof and the roof down, protruding limb accessible recess card is gone into roof and last baffle, baffle down and the space between the roof down, be equipped with the bolt hole that excels in on the otic placode, two connecting portions pass through the bolt connection that excels in on the otic placode, be equipped with the unilateral bolt hole that is used for fixed connection platform stull and platform bracing on two curb plates of joint portion and the backplate respectively.

Furthermore, the flange plate node comprises a flange steel pipe, one end of the flange steel pipe is provided with a first annular flange plate along the outer circumference, the other end of the flange steel pipe is provided with a second annular flange plate along the inner circumference, a cantilever web plate is arranged on the side face of the flange steel pipe, and the first flange plate and the platform, the second flange plate and the convex limb and the cantilever web plate and the platform cross brace are respectively connected through high-strength bolts.

The beneficial effects of the utility model reside in that:

1. the utility model discloses an assembled platform structural style has avoided welded complex process under water effectively to and the potential safety hazard that welding strength brought inadequately. Meanwhile, the advantage that the assembly structure is easy to disassemble enables the cyclic utilization of the ocean platform to be possible, and the assembly modularization of the ocean platform structure is realized.

2. The utility model discloses a cast aluminium node or cast iron node and ring flange node have solved major diameter steel core concrete's post-post connected node's assembly to and steel core concrete's post-post connection and post-violently (the oblique) assemble nature problem of propping connected node, satisfied the anti-seismic performance requirement of "strong node, weak component".

3. The utility model discloses in, the structure bearing capacity of pipe is high, the ductility is good, and wherein interior steel pipe plays the effect of bearing the axle load along the pipe wall, and outside restraint aluminum pipe length is less than inside steel pipe, and its both ends have certain clearance apart from the node, do not bear the axial load along the pipe wall, only bear along radial concrete extrusion load. When the concrete is stressed in multiple directions, the external constraint aluminum pipe constrains the lateral pressure, so that the development of micro cracks in the concrete is limited, the compressive strength of the concrete can be greatly improved, the bearing capacity of the conduit is increased compared with that of the traditional outer wall through double-wall hollow concrete conduit, and the anti-seismic energy consumption performance of the conduit is also enhanced.

4. The utility model discloses still can use with the antidetonation means of other types jointly, like the energy dissipation damping damper of other types, for example corner attenuator etc. to reach better antidetonation effect. The utility model discloses an assembled aluminum pipe-restraint concrete-steel pipe combination jacket platform not only limits to and uses in the platform structural system, still can install and use in the assembly type structure in civil engineering field. For example, the building block can be applied to common building structures such as plate type buildings, box type buildings, framework plate type buildings, rising-rise buildings, steel structures, steel reinforced concrete structures and the like; meanwhile, the column can be used as a whole bearing structure column, a partial weighing structure column and a temporary reinforcing column. The node form, material, node number, conduit size and material of the assembly, and the specific arrangement scheme, etc. can completely depend on the needs of the owner, and the application field is wide.

5. The cast aluminum node or cast iron node and the flange plate node which are integrally poured only need to be manufactured with one mold, so that the process is good, the manufacturing is easy, the structure is integrally more stable and firm, the adaptability is good, and the mechanical property is excellent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a schematic structural view of the catheter unit.

Fig. 4 is a front view of fig. 3.

Fig. 5 is a schematic view of the connection of two catheter units connected by a node.

Fig. 6 is a front view of fig. 5.

Fig. 7 is a schematic view of the internal structure of fig. 5.

Fig. 8 is a schematic view of the internal structure of the connecting portion.

Fig. 9 is a rear view of fig. 8.

Fig. 10 is a top view of fig. 8.

Fig. 11 is a schematic structural view of a flange node.

Fig. 12 is a front view of fig. 11.

Fig. 13 is a bottom view of fig. 11.

Figure 14 is a schematic view of the connection of a conduit to a platform via a flange node.

Fig. 15 is a side view of fig. 14.

Figure 16 is a schematic view of the connection of the conduit, platform and cross brace of the platform by the flange joint.

In the figure, 1-guide pipe, 2-platform, 3-guide pipe unit, 301-external constraint aluminum pipe, 302-internal steel pipe, 303-sandwich constraint concrete, 4-platform cross brace, 5-platform diagonal brace, 6-node, 61-clamping part, 62-upper clapboard, 63-single-side bolt hole, 64-high-strength bolt hole, 65-lower clapboard, 66-high-strength bolt, 67-rubber pad, 68-groove, 69-lug plate, 610-upper top plate, 611-lower top plate, 612-side plate, 613-back plate, 7-flange plate node, 71-flange steel pipe, 72-first flange plate, 73-cantilever web plate, 74-second flange plate and 8-convex limb.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1-16, the utility model provides an assembled aluminum pipe-confined concrete-steel pipe combination jacket ocean platform, which comprises a jacket and a platform 2, wherein the platform 2 is installed on the jacket, the jacket comprises a pipe 1, a platform cross brace 4 and a platform diagonal brace 5, the pipe 1 is arranged in the vertical direction, a plurality of platform cross braces 4 and platform diagonal braces 5 are arranged between the pipes 1, the top end of the pipe 1 is connected with the platform 2, the bottom end of the pipe 1 is fixedly connected to the seabed, the pipe 1 is an aluminum pipe-confined concrete-steel pipe double-wall hollow component, and comprises a plurality of connected pipe units 3; the pipe unit 3 comprises an outer restraining aluminum pipe 301 and an inner steel pipe 302 made of a seamless steel pipe; the external constraint aluminum pipe 301 and the inner steel pipe 302 are coaxially sleeved; interlayer constraint concrete 303 is filled between the external constraint aluminum pipe 301 and the inner steel pipe 302; two end faces of the inner steel pipe 302 are higher than two end faces of the external constraint aluminum pipe 301, and two ends of the inner steel pipe 302 are respectively provided with annular convex limbs 8 along the outer circumference; the conduit units 3, the conduit units 3 and the platform cross braces 4 and the conduit units 3 and the platform inclined braces 5 are fixedly connected through cast aluminum nodes 6 or cast iron nodes 6; the top end of the guide pipe 1 is connected with the platform 2 through a flange joint 7; the cast aluminum node 6 or the cast iron node 6 and the flange plate node 7 are integrally cast.

The node 6 comprises two symmetrically connected connecting parts; the connecting part comprises a clamping part 61 and ear plates 69 arranged at two sides of the clamping part 61; the clamping part 61 is a box body with an opening on one side, and comprises an upper top plate 610, two side plates 612, a back plate 613 and a lower top plate 611; the inside of the clamping part 61 is positioned between the upper top plate 610 and the lower top plate 611, and an upper partition plate 62 and a lower partition plate 65 are respectively arranged from top to bottom; the upper top plate 610 and the lower top plate 611 are both provided with a groove 68, the convex limb 8 can be clamped into gaps between the upper top plate 610 and the upper partition plate 62, and between the lower partition plate 65 and the lower top plate 611 through the groove 68, wherein the groove 68 is preferably semicircular, and the size of the groove is matched with the outer diameter of the inner steel pipe 302; the lug plate 69 is provided with a high-strength bolt hole 64, and the two connecting parts are connected through the high-strength bolt hole 64 on the lug plate 69 by bolts; the two side plates 612 and the back plate 613 of the clamping portion 61 are respectively provided with a single-side bolt hole 63 for fixedly connecting the platform cross brace 4 and the platform inclined brace 5.

The flange plate node 7 comprises a flange steel pipe 71; one end of the flange steel pipe 71 is provided with a circular first flange plate 72 along the outer circumference, the other end is provided with a circular second flange plate 74 along the inner circumference, and the side surface is provided with a cantilever web 73; the first flange plate 72 and the platform 2, the second flange plate 74 and the protruding limb 8, and the cantilever web 73 and the platform cross-brace 4 are respectively connected through high-strength bolts 66.

The preparation method comprises the following steps:

(1) manufacturing of the catheter 1: inserting an inner steel pipe 302 into an external constraint aluminum pipe 301, pouring interlayer constraint concrete 303, after the strength of the poured interlayer constraint concrete 303 meets the requirement, respectively inserting the convex limb 8 on the inner steel pipe 302 of the adjacent conduit unit 3 into gaps between an upper top plate 610 and an upper partition plate 62 and between a lower partition plate 65 and a lower top plate 611 of one connecting part of the cast aluminum node 6 or the cast iron node 6, and then fixedly connecting the connecting part with an ear plate 69 of the other connecting part through a high-strength bolt 66, so that the convex limbs 8 of the two adjacent conduit units 3 are fixed in the cast aluminum node 6 or the cast iron node 6, and connecting a plurality of conduit units 3 according to the method and then assembling into 4 conduits 1;

(2) manufacturing a jacket: fixing two ends of the platform cross brace 4 and the platform diagonal brace 5 on a single-side bolt hole 63 reserved in a side plate and a back plate of a cast-aluminum node 6 or a cast-iron node 6 of the assembled guide pipe 1 through single-side bolts respectively, wherein the lengths of the guide pipe 1, the platform cross brace 4 and the platform diagonal brace 5 can be determined according to the size of each layer of the designed platform 2;

(3) assembling the platform 2: after the platform 2 is prefabricated in a factory, the platform is transported to an offshore construction site through lightering or floating, the steel piles and the guide pipe 1 are driven into the seabed after being in place, the platform 2 is fixed on a first flange plate 72 through high-strength bolts 66, the convex limbs 8 at the top end of the guide pipe 1 are fixed on a second flange plate 74 through the high-strength bolts 66, and the cantilever webs 73 between the adjacent flange plate nodes 7 are connected with the platform cross braces 4 through the high-strength bolts 66. Thus, 4 pipes 1 are fixed below the platform 2 by high-strength bolts 66, so that the platform 2 is connected with the pipes 1.

By the method, the two adjacent conduit units 3 are assembled into a whole by cast-aluminum nodes 6 or cast-iron nodes 6, the 4 conduits 1 are assembled, the platform cross braces 4 and the platform diagonal braces 5 are fastened to assemble the conduit frame, and then the conduits 1 and the platform 2 are connected through flange joints 7. When the assembly type ocean platform needs to be dismantled, the sequence is opposite to the installation sequence, the assembly type ocean platform is easy to install and dismantle, the construction speed is greatly accelerated, the construction quality is high, the assembly type ocean platform can be directly transported to be installed on site, the procedure of on-site processing is omitted, and the assembly type ocean platform can be widely applied to building of the shallow sea area.

The utility model discloses in, interior steel pipe 302 plays the effect of bearing the axle load along the pipe wall, and outside restraint aluminum pipe 301 length is less than interior steel pipe 302, and its both ends have certain clearance apart from node 6, do not bear the axial load along the pipe wall, only bear along radial concrete extrusion load. When the concrete is stressed in multiple directions, the external constraint aluminum pipe 301 constrains the lateral pressure, so that the development of micro cracks in the concrete is limited, the compressive strength of the concrete can be greatly improved, the bearing capacity of the conduit 1 is increased compared with that of the traditional double-wall hollow concrete conduit with the outer wall communicated with the outer wall, and the seismic resistance and energy consumption performance of the conduit 1 are also enhanced.

Preferably, the high-strength bolt 66 of the present invention is a friction type high-strength bolt 66, which can prevent relative sliding between the connecting components and make the connection more tight.

Further, the utility model discloses in, on cast aluminium node 6 or cast iron node 6's the last baffle 62 and the contact surface of protruding limb 8 to and paste rubber pad 67 on the contact surface of lower baffle 65 and protruding limb 8 respectively, the impact when the pipe unit 3 at both ends about the buffer node 6 of being convenient for is installed.

Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. Assembled aluminium pipe-restraint concrete-steel pipe combination jacket platform comprises jacket and platform (2), and platform (2) are installed on the jacket, the jacket includes pipe (1), platform stull (4) and platform bracing (5), and pipe (1) sets up in vertical direction, is equipped with a plurality of platform stulls (4) and platform bracing (5) between pipe (1), and platform (2) are connected on the top of pipe (1), and the bottom fixed connection of pipe (1) is in the seabed, its characterized in that:

the guide pipe (1) comprises a plurality of connected guide pipe units (3), each guide pipe unit (3) comprises an external constraint aluminum pipe (301) and an internal steel pipe (302), the external constraint aluminum pipes (301) and the internal steel pipes (302) are coaxially sleeved, interlayer constraint concrete (303) is filled between the external constraint aluminum pipes (301) and the internal steel pipes (302), two end faces of the internal steel pipes (302) are higher than two end faces of the external constraint aluminum pipes (301), and two ends of the internal steel pipes (302) are respectively provided with annular convex limbs (8) along the outer circumference;

between pipe unit (3), between pipe unit (3) and platform stull (4), through node (6) fixed connection between pipe unit (3) and platform bracing (5), node (6) include the connecting portion of two symmetric connection, connecting portion include joint portion (61) and otic placode (69) of setting in joint portion (61) both sides, joint portion (61) are one open-ended box body, including last roof (610), two curb plates (612), backplate (613) and roof (611) down, the inside of joint portion (61) is located between roof (610) and roof (611) down, from the top down is equipped with baffle (62) and baffle (65) down respectively, all be equipped with recess (68) on roof (610) and roof (611) down, protruding limb (8) accessible recess (68) block go up roof (610) and upper baffle (62) and baffle (62), In a gap between the lower partition plate (65) and the lower top plate (611), a high-strength bolt hole (64) is formed in the lug plate (69), the two connecting portions are connected through the high-strength bolt hole (64) in the lug plate (69) through a bolt, and unilateral bolt holes (63) for fixedly connecting the platform cross brace (4) and the platform inclined brace (5) are respectively formed in the two side plates (612) and the back plate (613) of the clamping portion (61);

the top of pipe (1) is passed through ring flange node (7) and is connected with platform (2), ring flange node (7) are including flange steel pipe (71), the one end of flange steel pipe (71) is equipped with annular first flange board (72) along outer circumference, and the other end is equipped with annular second flange board (74) along interior circumference, and the side is equipped with cantilever web (73), between first flange board (72) and platform (2), between second flange board (74) and protruding limb (8) to and be connected through high strength bolt (66) respectively between cantilever web (73) and the platform stull (4).

2. The fabricated aluminum pipe-confined concrete-steel pipe combination jacket platform of claim 1, wherein: rubber pads (67) are respectively stuck on the contact surfaces of the upper partition plate (62) and the convex limbs (8) of the node (6) and the contact surfaces of the lower partition plate (65) and the convex limbs (8).

3. The fabricated aluminum pipe-confined concrete-steel pipe combination jacket platform of claim 1, wherein: the high-strength bolt (66) is a friction type high-strength bolt (66).

4. The fabricated aluminum pipe-confined concrete-steel pipe combination jacket platform of claim 1, wherein: the node (6) adopts a cast aluminum node (6) or a cast iron node (6).

5. The fabricated aluminum pipe-confined concrete-steel pipe combination jacket platform of claim 4, wherein: the cast aluminum node (6) or the cast iron node (6) and the flange plate node (7) are integrally cast.

6. The fabricated aluminum pipe-confined concrete-steel pipe combination jacket platform of claim 1, wherein: the inner steel pipe (302) is a seamless steel pipe.

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