Underwater tower crane foundation installation and construction method

Abstract

The invention relates to an underwater tower crane foundation installation construction method, which belongs to the field of overwater building engineering, and comprises the following steps: carrying out detailed investigation on a water area environment, designing the accurate size, thickness, anchoring mode and foundation structure of a steel casing, formulating a detailed construction scheme, building a professional construction team, and defining responsibility division of labor; a crawler crane and a vibratory hammer are used for accurately positioning and installing the steel casing to a preset position through a guide device, and it is ensured that the steel casing is vertically and stably installed; a waterproof layer is arranged between a steel casing and a foundation, the steel casing is subjected to anti-corrosion treatment, an anti-scouring structure is arranged, grouting reinforcement is carried out, all parts of the tower crane are assembled on the steel casing foundation, debugging and trial operation are carried out after connection and fixation, and normal functions of the tower crane are ensured. The directly-driven steel pipe pile is easily eroded by water flow, waves and silt, so that the steel pipe pile or a pile foundation is easily damaged.

Description

Technical Field

[0001] The invention belongs to the field of water construction engineering, and in particular relates to an underwater tower crane foundation installation construction method. Background Art

[0002] The installation of underwater tower crane foundation faces challenges such as deep water, complex water flow, and changeable geological conditions, which can easily lead to problems such as difficult installation, high cost, and poor safety. Therefore, the underwater tower crane foundation needs to have high stability to withstand various loads of the tower crane during operation. At present, when installing and constructing the underwater tower crane foundation, it is usually necessary to drive steel pipe piles directly into the underwater foundation to form a pile foundation. On the pile foundation, the tower crane foundation platform is made according to the design plan, and then the base section, standard section, attachment device and jacking system are installed.

[0003] However, when the inventor was installing the underwater tower crane foundation, he found that the current underwater tower crane foundation installation construction method has some problems: since the construction environment is on the water and the underwater environment is complex, the steel pipe piles directly driven in are easily eroded by water flow, waves and mud, which can easily lead to damage to the steel pipe piles or pile foundations. The foundation may also be unstable due to soft or uneven foundation, thus affecting the safe use of the tower crane. Therefore, a more efficient, safe and reliable underwater tower crane foundation installation method is urgently needed. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a method for installing and constructing an underwater tower crane foundation, which solves the problem in the prior art that during construction on water, the steel pipe piles directly driven in are easily eroded by water flow, waves and mud, which easily leads to damage to the steel pipe piles or pile foundations.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A method for installing an underwater tower crane foundation comprises the following steps:

[0007] S1: Survey the water environment, design the precise size, thickness, anchoring method and foundation structure of the steel casing, and drive steel pipe piles into the ground in advance;

[0008] S2: Use high-quality steel to make steel casing to ensure construction safety and efficiency;

[0009] S3: The steel casing is accurately positioned by the guide device and hoisted to the predetermined position by the lifting equipment;

[0010] S4: A waterproof coating is provided between the steel casing and the top cap of the steel pipe pile, the steel casing is subjected to anti-corrosion treatment, and an anti-scouring structure and grouting reinforcement are provided;

[0011] S5: Assemble the various components of the tower crane on the steel casing foundation, and carry out debugging and trial operation after connection and fixation to ensure that the tower crane functions normally, and put it into use after passing acceptance.

[0012] As a further solution of the present invention, the size, thickness, anchoring method and foundation structure of the steel casing designed in S1 need to be customized according to the different water depths, water flows and geological conditions of the aquatic environment to ensure that the designed steel casing can adapt to different water depths, water flows and geological conditions.

[0013] As a further solution of the present invention, the steel casing in S2 is fixed on a steel pipe pile driven into the ground in advance, and embedded bolts for fixing the tower crane foundation structure part are arranged inside the steel casing, and the embedded bolts are connected to the structural plate or platform inside the steel casing.

[0014] As a further solution of the present invention, a wall attachment piece is provided inside the steel pipe pile, the wall attachment piece is fixed to the inner wall of the steel pipe pile, and the wall attachment piece cooperates with the steel pipe pile to connect the wall attachment structure of the tower crane.

[0015] As a further solution of the present invention, the gap between the steel casing and the steel pipe piles is filled with grouting, and the grouting surrounds the embedded bolts and the wall attachments. The grouting, steel casing, steel pipe piles, embedded bolts and wall attachments form an integrated connection.

[0016] As a further solution of the present invention, the waterproof coating is arranged on the outside and inside of the steel casing, as well as the surface of the embedded bolts and wall attachments. The waterproof coating forms a physical cover with the steel casing, embedded bolts and wall attachments to prevent moisture penetration and corrosion.

[0017] As a further solution of the present invention, the guide device is arranged at the top of the steel casing to ensure the correct position and direction of the tower crane during installation. The guide device is fixed to the top of the steel casing and corresponds to the positioning structure at the bottom of the tower crane.

[0018] As a further solution of the present invention, the anti-scour structure is located around the steel casing, and the anti-scour structure is fixed to the outside of the steel casing to form a protective layer.

[0019] As a further solution of the present invention, in S3, the steel casing is accurately positioned and installed at a predetermined position by using a crawler crane and a vibrating hammer in cooperation with a guide device.

[0020] The beneficial effects of the present invention are:

[0021] Through detailed investigation of the water environment, the precise size, thickness, anchoring method and foundation structure of the steel casing are designed, a detailed construction plan is formulated, and a professional construction team is formed with clear division of responsibilities. The steel casing is accurately positioned and installed to the predetermined position through the guide device using crawler cranes and vibratory hammers to ensure that the steel casing is installed vertically and firmly. A waterproof layer is set between the steel casing and the foundation, the steel casing is treated with anti-corrosion, and an anti-scouring structure and grouting reinforcement are set up. The various components of the tower crane are assembled on the basis of the steel casing, and debugging and trial operation are carried out after connection and fixation to ensure that the tower crane functions normally. This solves the problem in the prior art that the steel pipe piles directly driven in during water construction are easily affected by water flow. , waves and silt erosion can easily lead to damage to steel pipe piles or pile foundations. In addition, the steel casing structure is relatively simple, easy to hoist and install, can significantly improve construction efficiency, and can provide a stable support structure to ensure the stability of the tower crane in complex water environments, thereby reducing safety risks during construction. The use of steel casing as the foundation of the tower crane can simplify the construction process, reduce material consumption and labor input, thereby reducing construction costs. Its anti-corrosion performance and durability can also reduce the frequency of repair and replacement of steel casings, reduce later maintenance costs, improve overall economic benefits, and extend service life. The steel casing material can be recycled and used multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the design and installation of the underwater tower crane foundation of the present invention.

[0024] Description of main component symbols:

[0025] In the figure: 1. Standard section of tower crane; 2. Verticality monitoring equipment; 3. Water surface line; 4. Grouting height line in steel casing; 5. Riprap protection; 6. Riverbed line; 7. Anchor bolts; 8. Guide device. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1 This embodiment provides a method for installing a tower crane foundation in water, comprising the following steps:

[0028] S1: First, conduct a detailed survey of the geological and hydrological conditions of the water area to obtain key data such as soil type, water level changes, and flow rate. Based on these data, design the size and thickness of the steel casing suitable for the local environment, and determine the reasonable anchoring method and foundation structure. On this basis, the construction team will pre-drive a certain number of steel pipe piles into the ground to provide stable support for the subsequent steel casing. This step is to ensure the stability and safety of the entire tower crane foundation and avoid construction risks caused by environmental factors. Through advance survey and design, the uncertainty in the construction process can be reduced, the construction efficiency and quality can be improved, and the construction cost and risk can also be reduced;

[0029] S2: Use high-quality steel to make steel casings, and equip them with advanced construction equipment and safety protection equipment such as crawler cranes, vibratory hammers, submersible pumps, grouting machines, etc. to ensure construction safety and efficiency; select high-strength and corrosion-resistant steel that meets national standards to make steel casings, and conduct strict quality inspections. In addition, the use of high-quality steel can withstand greater pressure and impact, and corrosion resistance is also conducive to extending the service life of steel casings. The use of high-quality steel can ensure the stability and safety of the tower crane foundation, reduce the frequency of later maintenance and replacement, and thus save costs;

[0030] S3: The steel casing is accurately positioned through the guide device 8, and the steel casing is hoisted to the predetermined position by the lifting equipment. The steel casing is accurately positioned to the predetermined position by the crawler crane and the vibrating hammer through the guide device 8 to ensure that the steel casing is installed vertically and stably; the guide device 8 here includes a positioning frame, a guide pulley or roller, a guide rod or guide rail, a supporting structure, an adjustment device, a measuring and monitoring device, and a locking device. The positioning frame is a frame fixed to the ground or the foundation structure, which is used to provide a preliminary positioning reference for the steel casing. The guide pulley or roller, which is installed on the positioning frame, can guide the steel casing to move along the predetermined path to ensure that it is accurately in place. Rods or guide rails, which are connected to the positioning frame to provide a straight or curved movement path for the steel casing to achieve precise alignment, support structures, including support feet or brackets fixed to the ground, used to stabilize the entire guide device 8 and the steel casing, adjustment devices, which may include bolts, jacks or hydraulic systems, used to fine-tune the position of the steel casing to ensure its verticality and stability, measuring and monitoring equipment, such as laser depth sounders, angle sensors, etc., used to monitor the position and posture of the steel casing in real time to ensure that it meets the design requirements, locking devices, after the steel casing reaches the predetermined position, the locking device can lock the steel casing to prevent it from moving until the installation process is completed;

[0031] S4: Install a waterproof coating between the steel casing and the top pedestal of the steel pipe pile, perform anti-corrosion treatment on the steel casing, and install an anti-scouring structure and grouting reinforcement; apply a waterproof coating on the contact surface between the steel casing and the steel pipe pile to prevent corrosion caused by water penetration. At the same time, perform anti-corrosion treatment on the steel casing, such as hot-dip galvanizing or applying anti-corrosion paint. In addition, install an anti-scouring structure and perform grouting reinforcement to enhance the stability of the foundation; since moisture and salt in the aquatic environment can easily cause corrosion of metal structures, anti-corrosion treatment is necessary. At the same time, anti-scouring structures and grouting reinforcement can prevent foundation subsidence caused by water scouring. These measures can effectively extend the service life of the tower crane foundation and reduce maintenance costs caused by corrosion and scouring;

[0032] S5: Assemble the various components of the tower crane on the basis of the steel casing, and carry out debugging and trial operation after connection and fixation to ensure that the tower crane functions normally, and put it into use after acceptance. Assemble the various components of the tower crane on the basis of the steel casing according to the design drawings, including the tower body, lifting arm, balance arm, etc., and carry out precise connection and fixation. After assembly, carry out system debugging and trial operation to check whether the various functions of the tower crane are normal. Debugging and trial operation can ensure that the tower crane is in the best working condition before it is officially put into use, and possible problems can be discovered and solved in time. The tower crane after acceptance can ensure the safety and efficiency of the construction process, reduce the risk of construction accidents, and improve the construction quality.

[0033] At present, the installation of water tower crane foundation faces challenges such as deep water, complex water flow, and changeable geological conditions, which can easily lead to problems such as difficult installation, high cost, and poor safety. Therefore, the underwater tower crane foundation needs to have very high stability to withstand various loads of the tower crane during operation. During the installation and construction of the underwater tower crane foundation, steel pipe piles are usually driven directly into the underwater foundation to form a pile foundation. On the pile foundation, the tower crane foundation platform is made according to the design plan, and then the base section, standard section, attachment device and jacking system are installed. However, since the construction environment is on water and the underwater environment is complex, the directly driven steel pipe piles are easily eroded by water flow, waves and mud, which can easily lead to damage to the steel pipe piles or pile foundations. The foundation is unstable due to soft or uneven foundations, which affects the safe use of the tower crane.

[0034] In order to solve the above problems, a detailed survey of the water environment is carried out, the precise size, thickness, anchoring method and foundation structure of the steel casing are designed, a detailed construction plan is formulated, and a professional construction team is formed to clarify the division of responsibilities. The crawler crane and the vibrating hammer are used to accurately locate the steel casing to the predetermined position through the guide device 8 to ensure that the steel casing is installed vertically and stably; a waterproof layer is set between the steel casing and the foundation, the steel casing is treated with anti-corrosion, and an anti-scouring structure and grouting reinforcement are set up. The various components of the tower crane are assembled on the basis of the steel casing, and debugging and trial operation are carried out after connection and fixation to ensure that the tower crane functions normally. This solves the problem in the prior art that the steel pipe piles directly driven in during water construction cannot meet the requirements. It is susceptible to erosion by water flow, waves and mud, which can easily lead to damage to steel pipe piles or pile foundations. In addition, the steel casing structure is relatively simple, easy to hoist and install, can significantly improve construction efficiency, and can provide a stable support structure to ensure the stability of the tower crane in complex water environments, thereby reducing safety risks during construction. The use of steel casing as the foundation of the tower crane can simplify the construction process, reduce material consumption and labor input, thereby reducing construction costs. Its anti-corrosion performance and durability can also reduce the frequency of repair and replacement of steel casings, reduce later maintenance costs, improve overall economic benefits, and extend service life. The steel casing material can be recycled and used multiple times.

[0035] It should be noted that in the underwater tower crane foundation installation construction method of the present application, during the underwater tower crane foundation installation construction, the underwater tower crane foundation design involves the tower crane standard section 1, verticality monitoring equipment 2, water surface line 3, grouting height line in steel casing 4, riprap protection 5, riverbed line 6, anchor bolts 7, and guide device 8, and the specific positions of the tower crane standard section 1, verticality monitoring equipment 2, water surface line 3, grouting height line in steel casing 4, riprap protection 5, riverbed line 6, anchor bolts 7, and guide device 8 are as follows: Figure 1 As shown in;

[0036] In addition, the tower crane standard section 1 is installed. First, the standard section is transported to the designated location by ship, and then the lifting equipment is used to lift the standard section to the predetermined location and dock them one by one. The tower crane standard section 1 is the main part of the tower crane, providing support and stability to ensure the stable operation of the tower crane during the construction process; the verticality monitoring equipment 2 is installed: the verticality monitoring equipment 2, such as a laser rangefinder or an electronic level, is installed on the tower crane standard section 1 to monitor the verticality of the tower crane in real time to ensure that the tower crane always remains in a vertical state during the construction process to avoid the danger caused by tilting; the water surface line 3 is determined by measuring and marking the height line of the water surface to ensure that the tower crane foundation will not be affected by water level changes during the construction process and to maintain the stability of the foundation; the grouting height line 4 in the steel casing is marked inside the steel casing as a reference standard for grouting. Ensure that the grouting reaches the predetermined height to enhance the stability and bearing capacity of the foundation; riprap protection 5, throw a certain thickness of stones around the foundation to form a protective layer to protect the foundation from water flow and silt erosion and prevent damage to the foundation structure; riverbed line 6 determination, through geological measurement, determine the contour and depth of the riverbed, provide an accurate reference for the subsequent installation of anchor bolts 7, and ensure the stability of the foundation and the riverbed; anchor bolt 7 installation, insert the anchor bolt 7 into the predetermined hole, and fix it with high-strength bolts to firmly connect the tower crane to the foundation, ensuring the stability and safety of the tower crane during construction; guide device 8 installation, install the guide device 8 on the tower crane standard section 1, usually including a pulley and a guide rail, the guide device 8 is used to guide and limit the movement of the tower crane in the vertical and horizontal directions, ensure the smooth operation of the tower crane, and prevent deviation from the predetermined trajectory.

[0037] Since the construction environment is on water, it is inevitable to encounter an environment with deep water or fast water flow. A steel casing that has not been specially designed may not be able to provide sufficient stability, resulting in structural failure or construction accidents. Different geological conditions (such as soft soil, hard soil, sandy soil, etc.) have different requirements for the foundation structure and anchoring method of the steel casing. A steel casing that has not been customized may not be able to adapt to specific geological conditions, affecting the construction quality. In an aquatic environment, the steel casing is affected by factors such as water flow, waves, and corrosion for a long time, and requires special design to ensure its long-term stability and durability. In this regard, in one embodiment, the size, thickness, anchoring method and foundation structure of the steel casing designed in S1 need to be customized according to the different water depths, water flows and geological conditions of the aquatic environment to ensure that the designed steel casing can adapt to different water depths, water flows and geological conditions and improve construction safety: by custom-designing the steel casing, the stability and safety of the structure during the construction process are ensured, and according to the specific conditions of the aquatic environment, such as water depth, water flow speed and geological structure, a suitable steel casing is designed to adapt to various construction environments.

[0038] In addition, there are problems such as poor foundation stability, insufficient bearing capacity and low construction efficiency in the water construction environment. In order to address this problem, in one embodiment, the steel casing in S2 is fixed on a steel pipe pile pre-driven into the ground, and embedded bolts for fixing the tower crane foundation structure are arranged inside the steel casing. The embedded bolts are connected to the structural plate or platform inside the steel casing. By fixing the steel casing on the steel pipe pile pre-driven into the ground, the stability of the tower crane foundation structure can be effectively improved. The water construction environment often faces the challenge of soft soil foundation, and the traditional foundation structure may not be able to provide sufficient supporting force. This design enhances the bearing capacity of the foundation by fixing the steel pipe piles and the steel casing, thereby solving the support problem of the soft soil foundation. The embedded bolts are connected to the structural plate or platform inside the steel casing, making the installation of the tower crane foundation structure easier and faster. This design reduces the complexity of on-site construction and improves construction efficiency.

[0039] In order to improve the stability of the foundation and reduce the potential safety hazards during the construction process, in one embodiment, a wall attachment is provided inside the steel pipe pile, the wall attachment is fixed to the inner wall of the steel pipe pile, the wall attachment and the steel pipe pile are used to connect the wall attachment structure of the tower crane, and the gap between the steel casing and the steel pipe pile is filled with grouting, the grouting surrounds the embedded bolts and the wall attachment, and the grouting, steel casing, steel pipe pile, embedded bolts and wall attachment form an integrated connection. By fixing the wall attachment to the inner wall of the steel pipe pile and the grouting filling, the foundation of the entire tower crane is more stable, and the wind and wave resistance of the tower crane in a complex environment is improved. Then, the grouting, steel casing, steel pipe pile, embedded bolts and wall attachment form an integrated connection, which improves the integrity and reliability of the structure. In addition, due to the pre-setting of the wall attachment and the embedded bolts, the installation process of the tower crane is simpler and faster, and the difficulty of on-site construction is reduced. This design can adapt to different geological conditions, such as soft foundations, riverbeds, seabeds, etc., and has good versatility and adaptability.

[0040] In order to further improve the corrosion resistance and stability of the underwater tower crane foundation, extend its service life, reduce maintenance costs, improve construction efficiency, and have environmental benefits, in one embodiment, a waterproof coating is arranged on the outside and inside of the steel casing, as well as on the surface of the embedded bolts and wall attachments. The waterproof coating forms a physical cover with the steel casing, the embedded bolts and the wall attachments to prevent moisture penetration and corrosion. Through the protection of the waterproof coating, the service life of the steel casing, the embedded bolts and the wall attachments can be effectively extended, and the frequency of maintenance and replacement can be reduced. The waterproof coating can improve the stability of the foundation, reduce structural damage caused by corrosion, and ensure the safety of the tower crane during construction in water. The waterproof coating can reduce the corrosion rate, thereby reducing maintenance costs. In the long-term use process, a large amount of maintenance costs can be saved. The setting of the waterproof coating can reduce unexpected situations during the construction process, such as structural problems caused by corrosion, thereby improving construction efficiency. The waterproof coating helps to reduce the corrosion of metal structures and reduce pollution to the environment.

[0041] In order to protect the steel casing from the influence of water scouring and ensure the stability and safety of the structure, in one embodiment, a guide device 8 is arranged on the top of the steel casing to ensure the correct position and direction of the tower crane during the installation process. The guide device 8 is fixed to the top of the steel casing, and the guide device 8 corresponds to the positioning structure at the bottom of the tower crane. The anti-scouring structure is located around the steel casing, and the anti-scouring structure is fixed to the outside of the steel casing to form a protective layer. In S3, the steel casing is accurately positioned to the predetermined position by using a crawler crane and a vibrating hammer in conjunction with the guide device 8 to ensure the accurate position and direction of the tower crane: by arranging the guide device 8 on the top of the steel casing, it can be ensured that the tower crane maintains the correct position and direction during the installation process to avoid installation errors. The guide device 8 corresponds to the positioning structure at the bottom of the tower crane, which helps to quickly and accurately install the tower crane and reduce adjustment time. The guide device 8 and the anti-scouring structure work together to improve the stability of the tower crane foundation and the reliability of the overall structure. The cooperation of the crawler crane and the vibrating hammer ensures the accuracy of the steel casing. Accurate installation reduces uncertainty and risks in construction. The use of crawler cranes and vibratory hammers improves construction efficiency, shortens construction periods, and saves time. The use of anti-scour structures increases protection of foundation structures and improves construction safety. The design can adjust construction strategies according to different geological conditions and enhances the adaptability of construction. Anti-scour structures include anti-scour materials, slope protection structures, and filling materials. Anti-scour materials are composed of stones, sandbags, concrete blocks and other materials. These materials are placed around steel casings to form a protective layer to slow down the scouring effect of water on the steel casing. The slope protection structure is set around the steel casing. The slope protection structure uses concrete slope protection or stone slope protection to provide additional protection. The anti-scour structure needs to be fixed to the outside of the steel casing, including anchor bolts or welding, to ensure that the anti-scour structure will not be displaced by water flow. In order to further stabilize the soil around the steel casing, the anti-scour structure is also filled with sand or other materials. These materials can further stabilize the soil around the steel casing and reduce scouring.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for installing a tower crane foundation in water, characterized in that: The following steps are involved: S1: Survey the water environment, design the precise size, thickness, anchoring method and foundation structure of the steel casing, and drive steel pipe piles into the ground in advance; S2: Use high-quality steel to make steel casing to ensure construction safety and efficiency; S3: The steel casing is accurately positioned by the guide device and hoisted to the predetermined position by the lifting equipment; S4: A waterproof coating is provided between the steel casing and the top cap of the steel pipe pile, the steel casing is subjected to anti-corrosion treatment, and an anti-scouring structure and grouting reinforcement are provided; S5: Assemble the various components of the tower crane on the steel casing foundation, and carry out debugging and trial operation after connection and fixation to ensure that the tower crane functions normally, and put it into use after passing acceptance.

2. The method for installing a tower crane foundation in water according to claim 1, characterized in that: The size, thickness, anchoring method and foundation structure of the steel casing designed in S1 need to be customized according to the different water depths, water flows and geological conditions of the water environment to ensure that the designed steel casing can adapt to different water depths, water flows and geological conditions.

3. The method for installing a tower crane foundation in water according to claim 1, characterized in that: The steel casing in S2 is fixed on a steel pipe pile driven into the ground in advance, and embedded bolts for fixing the tower crane foundation structure are arranged inside the steel casing, and the embedded bolts are connected to the structural plate or platform inside the steel casing.

4. The method for installing a tower crane foundation in water according to claim 3, characterized in that: A wall attachment piece is arranged inside the steel pipe pile, the wall attachment piece is fixed to the inner wall of the steel pipe pile, and the wall attachment piece cooperates with the steel pipe pile to connect the wall attachment structure of the tower crane.

5. The method for installing a tower crane foundation in water according to claim 4, characterized in that: The gap between the steel casing and the steel pipe pile is filled with grouting, and the grouting surrounds the embedded bolts and the wall attachments. The grouting, steel casing, steel pipe piles, embedded bolts and wall attachments form an integrated connection.

6. The method for installing a tower crane foundation in water according to claim 3, characterized in that: The waterproof coating is arranged on the outside and inside of the steel casing, as well as on the surfaces of the embedded bolts and the wall attachments. The waterproof coating forms a physical cover with the steel casing, the embedded bolts and the wall attachments to prevent moisture penetration and corrosion.

7. The method for installing a tower crane foundation in water according to claim 1, characterized in that: The guide device is arranged at the top of the steel casing to ensure the correct position and direction of the tower crane during installation. The guide device is fixed to the top of the steel casing and corresponds to the positioning structure at the bottom of the tower crane.

8. The method for installing a tower crane foundation in water according to claim 1, characterized in that: The anti-scour structure is located around the steel casing, and the anti-scour structure is fixed to the outside of the steel casing to form a protective layer.

9. The method for installing a tower crane foundation in water according to claim 1, characterized in that: In S3, the steel casing is accurately positioned and installed at a predetermined position by using a crawler crane and a vibrating hammer in cooperation with a guide device.

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