A quick-mounting and dismounting super deep water independent large-tonnage construction platform

Abstract

The application discloses a kind of ultra-deep water independent large-tonnage construction platforms of quick installation and disassembly, belong to offshore construction platform technical field, including construction platform and the support mechanism for supporting construction platform, it is characterized in that, the support mechanism includes steel pipe pile, multiple bottom sealing stiffeners are arranged in the steel pipe pile along the axial direction of steel pipe pile and side by side, multiple support brackets fixedly connected with the inner wall of steel pipe pile are arranged in the bottom of bottom sealing stiffener, the uppermost bottom sealing stiffener in multiple bottom sealing stiffeners is provided with connecting steel pipe, first annular gap is arranged between the connecting steel pipe and steel pipe pile, the connecting steel pipe and steel pipe pile are fixed by screw rod and are cross-dislocated intersection, concrete is poured in the first annular gap, platform steel pipe column is fixedly arranged at the bottom end of the construction platform, and the platform steel pipe column is sleeved on the connecting steel pipe and fixed by bolt.The application solves the problems of low efficiency and low turnover efficiency of deep-sea platform construction.

Description

Technical Field

[0001] This invention belongs to the field of offshore construction platform technology, specifically relating to an ultra-deepwater independent large-tonnage construction platform that can be quickly assembled and disassembled. Background Technology

[0002] In the construction of marine engineering projects such as cross-sea bridges, offshore wind farms, and deep-sea oil and gas resource development, it is often necessary to build temporary or semi-permanent construction platforms in deep water areas to support large machinery such as drilling rigs, cranes, concrete pumping equipment, and personnel operations.

[0003] Traditional construction platforms often employ a method of driving steel pipe piles and welding the upper steel truss or Bailey beams on-site, which presents the following prominent problems: Long offshore operation time and significant weather impact: After the steel pipe piles are driven, extensive on-site welding, bolting, and concrete pouring are required. The effective operating window is short in deep water environments, and severe sea conditions such as typhoons, waves, and currents often lead to work stoppages and serious delays. Low turnover efficiency: After the platform is used, the supporting structures (such as brackets, cross braces, and connectors) are often difficult to dismantle and recycle, often requiring underwater cutting, which is risky, inefficient, and results in the disposal of large amounts of structural materials, leading to poor economic returns. Insufficient fatigue and impact resistance: Existing deep-water platform connections are mostly rigid or semi-rigid (such as high-strength bolts, welding, and ordinary concrete filling). Under long-term wave, current, and wind loads, the connection points are subjected to complex cyclic stresses and accidental impacts (such as ship collisions and wave slamming), easily leading to bolt loosening, weld cracking, and concrete breakage, thus affecting the overall safety of the platform and resulting in high maintenance costs.

[0004] Therefore, there is an urgent need in this field for a technical solution that can maintain the advantages of rapid installation, disassembly, and turnover, while significantly improving the impact resistance, vibration reduction, and fatigue resistance of connection nodes. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a rapidly detachable, ultra-deepwater independent large-tonnage construction platform to solve the problems of low construction efficiency, long offshore construction time, great susceptibility to weather, and low turnover efficiency of traditional deep-sea platforms in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform, comprising a construction platform and a support mechanism for supporting the construction platform. The support mechanism includes steel pipe piles, with multiple bottom-sealing stiffening plates arranged side-by-side along the axial direction of the steel pipe piles. Multiple supporting brackets, fixedly connected to the inner wall of the steel pipe piles, are axially arranged at the bottom of the bottom-sealing stiffening plates. A connecting steel pipe is arranged on the uppermost bottom-sealing stiffening plate, and a first annular gap is provided between the connecting steel pipe and the steel pipe pile. The connecting steel pipe and the steel pipe pile are fixedly connected in a cross-shaped staggered manner by bolts. Concrete is poured into the first annular gap. A platform steel pipe column is fixedly installed at the bottom of the construction platform, and the platform steel pipe column is sleeved on the connecting steel pipe and fixed by bolts.

[0007] Furthermore, a positioning hole is provided inside the connecting steel pipe, and a sleeve fitted on the outer wall of the connecting steel pipe and a positioning post that can extend into the positioning hole are fixedly installed on the platform steel pipe column. The length of the positioning post is greater than the length of the sleeve.

[0008] Furthermore, the top wall of the positioning hole is provided with a first conical notch that is wider at the top and narrower at the bottom, and the top of the outer wall of the connecting pipe is provided with a second conical notch that is narrower at the top and wider at the bottom. The platform steel pipe column and the connecting steel pipe are fixed together to close the first conical notch and the second conical notch.

[0009] Furthermore, a second annular gap is provided between the positioning hole and the positioning post, and a rubber layer that mates with the second annular gap is fixedly provided on the positioning post.

[0010] Furthermore, a first annular cavity is provided within the rubber layer, and the first annular cavity is filled with a non-flowing liquid.

[0011] Furthermore, multiple annular rubber sealing layers are arranged side by side along the axial direction of the positioning column inside the first annular cavity to separate the first annular cavity into multiple spaces.

[0012] Furthermore, a second annular cavity is provided inside the annular rubber sealing layer, and a wave spring is fixedly installed inside the second annular cavity.

[0013] The beneficial effects of this invention are as follows: This invention solves the problems of "low construction efficiency, long construction time at sea, great influence from weather, and low turnover efficiency of traditional deep-sea platform construction". By modularizing the platform and the lower horizontal connection structure, setting multiple layers of brackets in the steel pipe piles for turnover, and using high-strength bolts to connect the platform steel pipe columns and steel pipe piles, the platform can be installed quickly, the turnover efficiency can be improved, and the pain points and difficulties of traditional construction can be solved. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the support mechanism according to Embodiment 1 of the present invention; Figure 3 This is an embodiment of the present invention. Figure 2 Schematic diagram of midsection AA; Figure 4 This is an embodiment of the present invention. Figure 2 Schematic diagram of mid-section BB; Figure 5 This is an embodiment of the present invention. Figure 2 Schematic diagram of the midsection CC; Figure 6 This is an embodiment of the present invention. Figure 2 Schematic diagram of the mid-section DD; Figure 7 This is a schematic diagram of the connection between the platform steel pipe column and the connecting steel pipe in Embodiment 1 of the present invention; Figure 8 This is a cross-sectional view of the connection between the platform steel pipe column and the connecting steel pipe in Embodiment 2 of the present invention.

[0015] The following are the markings in the attached diagram: construction platform 1, platform steel pipe column 101, positioning column 102, second annular gap 103, rubber layer 104, first annular cavity 105, annular rubber sealing layer 106, second annular cavity 107, wave spring 108, support mechanism 2, steel pipe pile 201, bottom sealing stiffening plate 202, connecting steel pipe 203, first annular gap 204, positioning hole 205, first conical notch 2051, second conical notch 2052, pipe sleeve 206, support bracket 207. Detailed Implementation

[0016] Example 1, as Figures 1-7 As shown, this invention discloses a rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform, comprising: a construction platform 1 and a support mechanism 2 for supporting the construction platform 1. The support mechanism 2 includes steel pipe piles 201. Multiple bottom-sealing stiffening plates 202 are arranged side-by-side along the axial direction of the steel pipe piles 201. Multiple supporting brackets 207, which are fixedly connected to the inner wall of the steel pipe piles 201, are arranged circumferentially at the bottom of the bottom-sealing stiffening plates 202. A connecting steel pipe 203 is arranged on the uppermost bottom-sealing stiffening plate 202. A first annular gap 204 is provided between the connecting steel pipe 203 and the steel pipe pile 201. The connecting steel pipe 203 and the steel pipe pile 201 are fixedly interlocked in a cross shape by bolts. Concrete is poured into the first annular gap 204. A platform steel pipe column 101 is fixedly installed at the bottom of the construction platform 1. The platform steel pipe column 101 is sleeved on the connecting steel pipe 203 and fixedly interlocked in a cross shape by bolts.

[0017] In this scheme, the upper part of the construction platform 1 is modularly constructed, and the lower part of the platform adopts large-diameter steel pipe piles 201. The top of the steel pipe piles 201 is equipped with corbels 203 in layers. The corbels 203 are equipped with bottom-sealing stiffening plates 202. The top of the bottom-sealing stiffening plates 202 are welded to the connecting steel pipes 203. The connecting steel pipes 203 and the steel pipe piles 201 are connected by high-strength bolts. The space between the two is filled with concrete. The connecting steel pipes 203 consist of two layers of steel pipes. The diameter of the inner steel pipe is slightly smaller than that of the platform steel pipe column 101 and can extend into the platform steel pipe column 101. After the platform steel pipe column 101 and the connecting steel pipes 203 are nested, they are connected by high-strength bolts. After the operation is completed, the first layer of steel pipe pile corbels can be directly cut off and the high-strength bolts can be removed to achieve rapid turnover.

[0018] This solution addresses the problems of low construction efficiency, long construction time at sea, and significant weather-related impacts on traditional deep-sea platforms, resulting in low turnover efficiency. By modularizing the platform and its lower transverse structure, and incorporating multiple layers of brackets within the steel pipe piles for turnover, high-strength bolts are used to connect the platform's steel pipe columns to the steel pipe piles. This enables rapid platform installation, improves turnover efficiency, and resolves the pain points and difficulties of traditional construction.

[0019] Example 2, as Figure 8 Based on Embodiment 1, a positioning hole 205 is provided inside the connecting steel pipe 203. A sleeve 206 fitted on the outer wall of the connecting steel pipe 203 and a positioning post 102 that can extend into the positioning hole 205 are fixedly provided on the platform steel pipe column 101. The length of the positioning post 102 is greater than the length of the sleeve 206, so that the positioning post 102 is first inserted into the positioning hole 205. The sleeve 205 is fixed to the pipe wall of the connecting steel pipe 203 by bolts.

[0020] In this solution, compared to Embodiment 1, by increasing the wall thickness of the connecting steel pipe 203 to form the positioning hole 205, when the platform steel pipe column 101 is fitted onto the connecting steel pipe 203, the positioning post 102 first contacts the connecting steel pipe 203 before the sleeve 206. That is, the positioning post 102 first cooperates with the positioning hole 205 to achieve rapid positioning, and then the sleeve 206 is fitted onto the connecting steel pipe 203. Compared to Embodiment 1, this reduces the positioning complexity. Furthermore, due to the increased wall thickness of the connecting steel pipe 203, when fixing the connecting steel pipe 203 and the platform steel pipe column 101, the sleeve 206 is fixed to the wall of the connecting steel pipe 203 with bolts. That is, the bolts do not need to penetrate the positioning hole 205, avoiding the problem of bolt deformation due to pressure during use, which makes it difficult to remove the bolts.

[0021] The top wall of the positioning hole 205 is provided with a first conical notch 2051 that is wider at the top and narrower at the bottom to facilitate the positioning of the positioning post 102. The top of the outer wall of the connecting pipe 203 is provided with a second conical notch 2052 that is narrower at the top and wider at the bottom to facilitate the positioning of the sleeve 206.

[0022] A second annular gap 103 is provided between the positioning hole 205 and the positioning post 102, and a rubber layer 104 that mates with the second annular gap 103 is fixedly provided on the positioning post 102. The rubber layer 104 has high damping to absorb vibration energy through viscoelastic deformation.

[0023] The rubber layer 104 has a first annular cavity 105 filled with a non-Newtonian fluid. When the construction platform 1 is subjected to wave impact, the non-Newtonian fluid thickens instantly under high-speed impact to form a solid buffer layer, dispersing the impact force to the entire contact surface and avoiding local stress concentration. Under low-speed static load, it remains liquid, not hindering the relative slight displacement between the platform steel pipe column 101 and the connecting steel pipe 203, facilitating installation and disassembly. Furthermore, when the platform steel pipe column 101 is fixed to the connecting steel pipe 203, the platform steel pipe column 101 is configured to close the first conical notch 2051 and the second conical notch 2052. The first conical notch 2051 provides deformation space for the deformation of the rubber layer 104 during installation, ensuring contact between the rubber layer 104 and the inner wall of the positioning hole 205.

[0024] Multiple annular rubber sealing layers 106 are arranged side-by-side along the axial direction of the positioning post 102 within the first annular cavity 105, thus separating the first annular cavity 105 into multiple spaces. A second annular cavity 107 is provided within each annular rubber sealing layer 106, and a steel wave spring 108 is fixedly installed within the second annular cavity 107. On the one hand, this restricts the axial deformation of the rubber layer 104; on the other hand, it absorbs vibration energy through the viscoelastic deformation of the rubber layer 104. The wave spring 108 provides axial elastic restoring force and prevents the rubber layer 104 from being over-compressed. The two work together to dissipate low-frequency continuous vibration.

[0025] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A rapidly assembleable and disassembled ultra-deepwater independent large-tonnage construction platform, comprising a construction platform and a support mechanism for supporting the construction platform, characterized in that, The support mechanism includes steel pipe piles, with multiple bottom-sealing stiffening plates arranged side-by-side along the axial direction of the steel pipe piles. Multiple supporting brackets, fixedly connected to the inner wall of the steel pipe piles, are axially arranged at the bottom of each bottom-sealing stiffening plate. A connecting steel pipe is installed on the uppermost bottom-sealing stiffening plate. A first annular gap is provided between the connecting steel pipe and the steel pipe pile. The connecting steel pipe and the steel pipe pile are fixed together in a cross-shaped staggered arrangement by bolts. Concrete is poured into the first annular gap. A platform steel pipe column is fixedly installed at the bottom of the construction platform, and the platform steel pipe column is sleeved on the connecting steel pipe and fixed with bolts.

2. The rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform according to claim 1, characterized in that: The connecting steel pipe is provided with a positioning hole, and the platform steel pipe column is fixedly provided with a sleeve fitted on the outer wall of the connecting steel pipe and a positioning column that can extend into the positioning hole. The length of the positioning column is greater than the length of the sleeve.

3. The rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform according to claim 1, characterized in that: The top wall of the positioning hole is provided with a first conical notch that is wider at the top and narrower at the bottom, and the top of the outer wall of the connecting pipe is provided with a second conical notch that is narrower at the top and wider at the bottom. The platform steel pipe column and the connecting steel pipe are fixed together to close the first conical notch and the second conical notch.

4. The rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform according to claim 1, characterized in that: A second annular gap is provided between the positioning hole and the positioning post, and a rubber layer that mates with the second annular gap is fixedly provided on the positioning post.

5. The rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform according to claim 1, characterized in that: The rubber layer has a first annular cavity, which is filled with a non-flowing liquid.

6. The rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform according to claim 1, characterized in that: Multiple annular rubber sealing layers are arranged side by side along the axial direction of the positioning column in the first annular cavity to separate the first annular cavity into multiple spaces.

7. The rapidly detachable, ultra-deepwater, independent, large-tonnage construction platform according to claim 1, characterized in that: A second annular cavity is provided inside the annular rubber sealing layer, and a wave spring is fixedly installed inside the second annular cavity.

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