Installation method of lifting floating bottom of storm combined deepwater laboratory

Abstract

The invention discloses a mounting method of a lifting floating bottom of a storm combined deepwater laboratory, and relates to the technical field of deepwater experiments. Comprising the steps that modular prefabrication is conducted on a floating bottom structure in a factory, and a plurality of large sections meeting the transportation condition are assembled; the prefabricated floating bottoms are transported to a construction site in a segmented mode; civil construction of the pool is completed according to design requirements; and the prefabricated floating bottom is hoisted to the bottom of the pool in a segmented mode and assembled on site. According to the design requirement, civil construction of the pool is completed, and the method comprises the steps that installation and acceptance inspection of all embedded parts, grooves and seat piers are completed; the pool wall and the pool bottom are comprehensively cleaned, so that the surface of the pool is free of impurities and pollutants; hardening the ground of the pool operation area; pipeline installation and pressure testing are carried out on the drainage system; and after water drainage maintenance and leakage detection are conducted, water drainage and airing are conducted. And most welding work is completed under ideal conditions through factory prefabrication, so that the welding quality is ensured, the operation difficulty in a narrow space of a laboratory is avoided, and the engineering quality and the construction efficiency are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of deepwater experiments, and in particular to an installation method for a lifting floating bottom of a wind-wave combined deepwater laboratory. Background Art

[0002] With the deepening of research on marine engineering, ships and marine structures, wind-wave combined deep-water laboratories have become important facilities for simulating complex marine environments. Among them, the lifting buoy is one of the core equipment of the deep-water tank, mainly used to realize variable water depth experiments, civil engineering wind tunnel tests, and the installation and load requirements of underwater models. Specifically, the functions of the lifting buoy include: (1) by adjusting the height of the buoy to adapt to the water depth requirements of different experiments; (2) when the buoy rises to the same level as the ground, it can be used as a civil engineering wind tunnel; (3) providing a stable support platform for underwater experiments, avoiding diving operations, and bearing the weight and impact of the model device.

[0003] To achieve the above functions, the floating bottom system usually includes a floating bottom body structure, a lifting system, a guide device, a tightening device, an underwater camera and lighting device, and a control system. It has a complex structure and is difficult to construct. Among them, the floating bottom body structure is composed of multiple pontoons connected together, and the overall lifting and lowering are achieved by relying on the buoyancy provided by the pontoons. However, in deep-water environments, the connection and installation of pontoons face great challenges. At present, there are two common floating bottom installation methods: building a pool from the ground upwards: the pool is built from the ground upwards, and the floating bottom can be assembled on the ground before the pool body is fully built. At this time, the water depth is shallow and the construction conditions are better. Semi-buried pool large-size pontoon solution: a large pontoon that can accommodate workers is used. After transporting in sections, the connection is completed manually inside the pontoon to reduce the difficulty of underwater construction.

[0004] However, for deep-water tanks excavated downward, the floating bottom must be installed in deep water, making traditional methods difficult to apply. Furthermore, the floating bottom's large size and weight limit the space available for installation. Furthermore, large equipment such as wave generators and wind turbines are already installed within the tank, requiring coordination of time and space to avoid interference. Therefore, a floating bottom installation method suitable for deepwater environments, efficient, safe, and reliable, is urgently needed to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of the present invention is to provide an installation method for a lifting floating bottom of a wind-wave combined deep-water laboratory, which reduces construction difficulty, ensures structural accuracy, and reduces temporal and spatial interference through factory pre-assembly, segmented transportation, and minimal on-site connection.

[0006] To achieve the above objectives, the technical solution of this application is: a method for installing a lifting floating bottom of a wind-wave combined deepwater laboratory, comprising:

[0007] The floating bottom structure is modularly prefabricated in the factory and assembled into several large sections that meet transportation conditions;

[0008] Transport the prefabricated floating bottom to the construction site in sections;

[0009] Complete the civil construction of the pool according to design requirements;

[0010] The prefabricated floating bottom is hoisted to the pool bottom in sections and assembled on site.

[0011] As a preferred solution of the present invention, the civil construction of the water pool is completed according to the design requirements, including:

[0012] Complete the installation and acceptance of all embedded parts, trenches, and piers;

[0013] Thoroughly clean the pool walls and bottom to remove any debris or pollutants from their surfaces;

[0014] The ground in the pool operation area has been hardened;

[0015] Pipe installation and pressure testing of drainage systems;

[0016] After draining maintenance and leak detection, drain and dry.

[0017] As a preferred solution of the present invention, during the construction of the pool, the entire side channel of the long side of the pool is temporarily suspended, and the construction of the side building begins after all the floating bottom steel structure components are hoisted into the pool.

[0018] As a preferred solution of the present invention, before the prefabricated floating bottom is hoisted, construction tools are first hoisted to the bottom of the pool and arranged in place as required. The construction tools include hand tools, power tools, construction machinery, safety protection equipment, measuring tools and auxiliary equipment.

[0019] As a preferred solution of the present invention, the prefabricated floating bottom segments are hoisted to the pool bottom by using a tire crane to hoist the prefabricated floating bottom segments to the pool bottom, and then assembled, first performing flange connection operations, and only performing necessary welding work on site.

[0020] As a preferred solution of the present invention, after all prefabricated floating bottoms are hoisted, the pool bottom mechanical components are connected to the floating bottom and the pool bottom according to the positions shown in the drawings.

[0021] As a preferred solution of the present invention, after all prefabricated floating bottoms are hoisted, each winch device is arranged on one side of the pool to complete the connection with the floating bottom.

[0022] As a preferred solution of the present invention, after all prefabricated floating bottoms are hoisted, electrical control lines are laid according to design requirements and standardized wiring is completed with the integrated operating console.

[0023] As a preferred solution of the present invention, the assembled floating bottom is kept underwater and in alternating dry and wet conditions for a long time. During debugging, the water pool is first filled with water, and then a functional test is carried out in a water-filled state.

[0024] As a preferred solution of the present invention, after completing the floating bottom assembly and water debugging, a continuous trial operation test is carried out to verify its various functional indicators and operational stability; after the trial operation is qualified, a joint acceptance is carried out according to the acceptance standards to ensure that it meets the requirements of long-term underwater operation and alternating dry and wet working conditions.

[0025] By adopting the above technical solution, the present invention can achieve the following technical effects: This method significantly reduces the difficulty of on-site construction by pre-assembling the floating bottom structure in the factory and transporting it to the site in sections. The specific implementation steps are as follows: First, the overall structure is divided into several large sections and prefabricated and welded in the factory to ensure the accuracy of the structural shape; then, after transportation to the site, the sections are hoisted into place, with only a small amount of connection work performed on the outside of the floating bottom. This process design has the following advantages: 1) Factory prefabrication allows more than 90% of the welding work to be completed under ideal conditions, which not only ensures welding quality but also avoids the operational difficulties in the narrow space of the laboratory; 2) Only a small amount of docking work is required on-site, significantly reducing the risk of structural deformation; 3) Through the scientific arrangement of construction processes, the mutual interference of cross-temporal and spatial operations is minimized. This solution implements the modern construction concept of "factory prefabrication as the main method, supplemented by on-site assembly", effectively improving project quality and construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 Flow chart for preparation before the floating bottom structure enters the site;

[0028] Figure 2 Flowchart of the installation process for the floating bottom structure. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0030] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0032] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] This embodiment provides a method for installing a lifting floating bottom of a wind-wave combined deepwater laboratory, including a preparation process before the floating bottom structure enters the site and a floating bottom structure installation process;

[0035] like Figure 1 As shown in the figure, the preparation process before the substructure enters the site includes:

[0036] a) The pool construction is completed and accepted

[0037] Civil construction is completed: all embedded parts, trenches, piers, etc. of the pool have been constructed according to the design requirements, and measurement and acceptance have been completed to ensure that the dimensions and elevations meet the standards.

[0038] Pool cleaning: Clean the pool walls and bottom surfaces, leaving no debris, pollutants, or stagnant water, to ensure a good environment for subsequent construction.

[0039] Ground hardening: The pool ground has been hardened to meet the needs of heavy equipment such as trucks and tire cranes entering and exiting, as well as temporary stacking of steel structure components on the floating bottom.

[0040] Water supply and drainage system: The water supply and drainage system of the pool has been installed, and the water discharge maintenance and leak detection tests have been completed to ensure that there are no leakage problems.

[0041] Pool drainage and inspection: After maintenance is completed, drain the water in the pool, dry the pool, and keep inspection records to ensure that the structure meets construction requirements.

[0042] (b) Construction status requirements (ensuring unobstructed access for floating bottom hoisting)

[0043] Channel reservation: Before or during the construction of the superstructure, a complete channel on the long side of the pool must be retained (temporarily suspended from closure or construction) to facilitate the entry and exit of trucks, tire cranes and other equipment, and to meet the transportation, unloading and lifting needs of the floating bottom steel structure components.

[0044] Closure timing: After all the steel structure components of the floating bottom are hoisted into the pool and the preliminary installation is completed, the side channel can be closed and the superstructure construction can continue.

[0045] (c) Construction load confirmation and transportation and hoisting planning

[0046] Floating bottom steel structure segmentation: According to the weight limit requirements for road transportation, the floating bottom steel structure is divided into transportation segments with the maximum allowable weight.

[0047] Weight of tooling steel structure: Consider the load-bearing capacity of temporary support tooling on the pool bottom (such as tire frames, pads, etc.).

[0048] Transport vehicles: Calculate the impact of large transport trucks (including deadweight + load) on the ground and temporary roads.

[0049] Lifting equipment: Calculate load distribution during tire crane unloading and combined lifting to ensure safe operations.

[0050] Auxiliary tools and equipment: including wire ropes, skids, cutting / welding equipment, hanging baskets, up and down escalators, etc., need to be planned in advance for storage and use to ensure efficient and orderly construction.

[0051] By rationally planning the construction sequence, load calculation and channel reservation, the transportation, hoisting and installation of the floating bottom steel structure are ensured to be safe and efficient, reducing the difficulty of on-site construction and the risk of structural deformation.

[0052] like Figure 2 As shown, the installation process of the floating bottom structure includes:

[0053] (a) Construction equipment installation and layout

[0054] The tooling equipment required for construction, including hand tools, power tools, construction machinery, safety protection equipment, measuring instruments and auxiliary equipment, are hoisted to the bottom of the pool and arranged reasonably according to the construction plan to ensure a safe and efficient working environment.

[0055] (b) Steel structure block lifting and assembly

[0056] Sectional lifting: Use a tire crane to lift the floating bottom steel structure in sections to the designated location on the bottom of the pool.

[0057] On-site assembly: The steel structure is assembled on the bottom of the pool. Only a small amount of welding is required on site, and flange connections are mainly used to control structural deformation and ensure accuracy.

[0058] (c) Installation of pool bottom mechanical components

[0059] According to the requirements of the design drawings, the pool bottom mechanical components (such as supporting structures, guide devices, etc.) are positioned and connected with the floating bottom or embedded parts of the pool bottom to ensure that the installation position is accurate and firmly fixed.

[0060] (d) Winch installation

[0061] On-site fixing: All winch devices are arranged on one side of the pool and fixed according to design requirements after being hoisted into place.

[0062] Connecting to the floating bottom: Complete the mechanical and electrical connection between the winch and the floating bottom structure to ensure coordinated operation.

[0063] (e) Electrical system installation

[0064] Lay electrical control lines, connect the floating bottom system, winch device, etc. with the two integrated operating consoles, and conduct preliminary power-on tests to ensure normal signal transmission and control functions.

[0065] (f) Water debugging

[0066] Water filling into the pool: Fill the pool with water to the designed water level to simulate the operating environment of the floating bottom being underwater for a long time and alternating between dry and wet.

[0067] System debugging: Conduct comprehensive tests on the floating bottom's lifting, sealing, electrical control and other functions under water conditions and adjust them to the optimal working conditions.

[0068] (g) Trial operation and acceptance

[0069] No-load and load trial operation: perform no-load and simulated load operation respectively to test system stability and various performance indicators.

[0070] According to the acceptance standard, the floating bottom system is comprehensively evaluated, and is delivered after being confirmed to be qualified, so as to ensure that the use requirements of long-term underwater operation and dry-wet alternating working conditions are met.

[0071] In this step, the efficient combination of factory prefabrication and on-site assembly maximizes the reduction of welding operations in the pool, ensuring structural precision and construction safety.

[0072] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. The installation method of the lifting floating bottom of the wind-wave combined deep-water laboratory is characterized by: include: The floating bottom structure is modularly prefabricated in the factory and assembled into several large sections that meet transportation conditions; Transport the prefabricated floating bottom to the construction site in sections; Complete the civil construction of the pool according to design requirements; The prefabricated floating bottom is hoisted to the pool bottom in sections and assembled on site.

2. The installation method of the lifting floating bottom of the wind-wave combined deep-water laboratory according to claim 1 is characterized in that: Complete the civil construction of the pool according to the design requirements, including: Complete the installation and acceptance of all embedded parts, trenches, and piers; Thoroughly clean the pool walls and bottom to remove any debris or pollutants from their surfaces; The ground in the pool operation area has been hardened; Pipe installation and pressure testing of drainage systems; After draining maintenance and leak detection, drain and dry.

3. The installation method of the lifting floating bottom of the wind-wave combined deep-water laboratory according to claim 1 is characterized in that: During the construction of the pool, the construction of the entire side channel on the long side of the pool will be temporarily suspended. After all the floating bottom steel structure components are hoisted into the pool, the construction of this side will begin.

4. The method for installing the lifting bottom of the wind-wave combined deepwater laboratory according to claim 1 is characterized in that: Before the prefabricated floating bottom is hoisted, the construction tools are first hoisted to the bottom of the pool and arranged in place as required. The construction tools include hand tools, power tools, construction machinery, safety protection equipment, measuring tools and auxiliary equipment.

5. The installation method of the lifting floating bottom of the wind-wave combined deep-water laboratory according to claim 1 is characterized in that: The method of lifting the prefabricated floating bottom segments to the pool bottom is: use a tire crane to lift the prefabricated floating bottom segments to the pool bottom, and then assemble them, first perform flange connection operations, and only perform necessary welding work on site.

6. The installation method of the lifting floating bottom of the wind-wave combined deep-water laboratory according to claim 3 is characterized in that: After all prefabricated floating bottoms are hoisted, the pool bottom mechanical components are connected to the floating bottom and pool bottom according to the positions in the drawings.

7. The method for installing the lifting bottom of the wind-wave combined deepwater laboratory according to claim 1 is characterized in that: After all prefabricated floating bottoms are hoisted, each winch equipment is placed on one side of the pool to complete the connection with the floating bottom.

8. The method for installing the lifting bottom of the wind-wave combined deepwater laboratory according to claim 1 is characterized in that: After all prefabricated floating bottoms are hoisted, electrical control lines are laid according to design requirements, and standardized wiring is completed with the integrated operating console.

9. The method for installing the lifting bottom of the wind-wave combined deepwater laboratory according to claim 1 is characterized in that: The assembled floating bottom is kept underwater and in alternating dry and wet conditions for a long time. During debugging, the pool is filled with water first, and then functional testing is carried out in the water state.

10. The method for installing the lifting floating bottom of the wind-wave combined deepwater laboratory according to claim 9, characterized in that: After completing the floating bottom assembly and water debugging, a continuous trial operation test is carried out to verify its various functional indicators and operational stability; after the trial operation is qualified, a joint acceptance is carried out according to the acceptance standards to ensure that it meets the requirements of long-term underwater operation and alternating dry and wet conditions.

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