Deep water cast-in-place construction method, self-supporting hanging basket and ship-berthing prefabricated component

Abstract

The application discloses a kind of deep water cast-in-place construction method and self-supporting hanging basket, rely on prefabricated component, belong to deep water cast-in-place construction technical field.Self-supporting hanging basket includes self-supporting hanging basket main beam, it is fixedly arranged in the top of self-supporting hanging basket stand, several self-supporting hanging basket secondary beams are evenly arranged along the length direction of the self-supporting hanging basket main beam, self-supporting hanging basket suspender is arranged in the vertical direction of the self-supporting hanging basket secondary beam, and channel steel connecting piece is arranged between adjacent self-supporting hanging basket stand.The self-supporting hanging basket can realize continuous operation, improve construction efficiency, design the self-supporting hanging basket of the application, and the self-supporting process can be all-weather construction under the condition that tidal level is not higher than pile top, effectively continuous operation, improve construction efficiency.Self-supporting hanging basket can be reused, reduce construction cost.

Description

Technical Field

[0001] This invention relates to the field of deep-water cast-in-place construction technology, specifically to a deep-water cast-in-place construction method and a self-supporting hanging basket and prefabricated components for mooring boats. Background Technology

[0002] The existing construction method for the crossbeams of deep-water high-pile offshore wharves mainly adopts the corbel construction method, which has the following drawbacks: 1) Traditional corbel construction is greatly affected by the environment. Welding or cutting of the corbels requires waiting for low tide, resulting in a short construction window. 2) When drilling holes at the side ends of cast-in-place piles or using clamps for auxiliary construction, high tide can easily erode the components, affecting structural durability. Construction time is also affected by tides. 3) Traditional corbel schemes are limited by pile spacing and pile diameter, and generally use large-sized I-beams or structural steel as corbel materials. Some schemes, to ensure safety, use longer I-beams or structural steel that run across the top of the pile and the berthing components, using the exposed part as a corbel. However, during demolition, the corbel part cannot be completely cut off, resulting in material waste. 4) The traditional bracket system is affected by various factors such as waves and welding precision when the bracket is welded and fixed during template installation. Its accuracy is difficult to guarantee, and subsequent adjustments are difficult. In addition, the traditional system cannot flexibly adjust the elevation, making it difficult to meet the needs of complex working conditions.

[0003] Chinese invention patent CN107724244A discloses a temporary T-structure composed of unsupported continuous rigid frame side span beam segments and its construction method. It uses temporary high-strength threaded steel bars passed through through holes in a temporary support device to connect the first and second side span cast-in-place segments. Once the concrete strength reaches the design strength, the temporary high-strength threaded steel bars are tensioned. The side span cantilever segments are cast using a hanging basket cantilever casting method, and temporary steel cables are used to simultaneously and in stages tension each stage of the side span cantilever segments until the closure segment. Permanent web steel cables and permanent bottom plate steel cables are tensioned in batches to allow the side span cantilever segments and the central pier cantilever side span segments to close together through the closure segment, completing the system conversion. However, this invention provides temporary support components that cannot be reused, resulting in poor economic efficiency. Furthermore, the process is complex, requiring multi-stage tensioning, and is not suitable for rapid construction of deep-water wharves. Summary of the Invention

[0004] The purpose of this invention is to provide a deep-water cast-in-place construction method and a self-supporting hanging basket and prefabricated components for mooring boats.

[0005] The technical solution of this invention: a deep-water cast-in-place construction method, comprising the following steps,

[0006] Step 1: Process self-supporting hanging baskets, bottom basket accessories, and prefabricated components for berthing in the yard, and transport them to the site after processing;

[0007] Step 2: Reserve anchor holes for the cast-in-place piles. Reserve anchor holes at the pile head for installing the self-supporting hanging basket column.

[0008] Step 3: Install the self-supporting hanging basket. Slide a PVC pipe under the bottom of the self-supporting hanging basket column, install the support column unit in place according to the corresponding anchor hole position, and set up horizontal bars and diagonal braces around it for reinforcement. Then install the self-supporting hanging basket main beam, self-supporting hanging basket secondary beam and self-supporting hanging basket hanger in sequence. The self-supporting hanging basket hanger is fixed to the upper end face of the self-supporting hanging basket secondary beam by the upper nut.

[0009] Step 4: Install the main beam and secondary beam of the bottom basket. Pass the self-supporting hanging basket rod through the reserved hole in the main beam of the bottom basket and install the lower nut to fix it. Adjust the length of the self-supporting hanging basket rod by adjusting the lower nut under the main beam of the bottom basket, leaving an adjustment range of 30cm-50cm. Control the height of the bottom basket to meet the design requirements of the bottom basket formwork and the secondary beam of the bottom basket. Continuous operation can still be achieved when the sea level does not exceed 20cm from the top of the cast-in-place pile.

[0010] Step 5: Installation of precast berthing components. Install the precast berthing component bracket on the side end of the main beam of the bottom basket, and then hoist the precast berthing component into the bracket and place it in place. The top elevation of the precast berthing component is consistent with the design elevation of the bottom of the cast-in-place structure.

[0011] Step 6: Cast-in-place structure construction, installation of bottom basket formwork and side formwork, binding of reinforcing bars, and pouring of concrete;

[0012] Step 7: System dismantling and maintenance. The bottom basket formwork, bottom basket secondary beams, berthing precast component supports, bottom basket main beams, and self-supporting hanging baskets are dismantled in sequence, and then maintained and transported.

[0013] Furthermore, step 3 specifically involves:

[0014] Step 31: Install self-supporting hanging basket columns. Each cast-in-place pile is equipped with a self-supporting hanging basket. The gap between the self-supporting hanging basket column and the anchor hole is filled with geotextile. Mortar is wrapped around the gap between the PVC pipe on the outside of the self-supporting hanging basket column and the hole.

[0015] Step 32: Install the main beam of the self-supporting hanging basket at the top of the self-supporting hanging basket column, and install stiffening plates at the joints;

[0016] Step 33: Install multiple rows of transverse self-supporting secondary beams on the main beam of the self-supporting hanging basket;

[0017] Step 34: Pass the self-supporting hanging basket suspension rod through the reserved hole of the self-supporting hanging basket secondary beam, and install nuts on the top of the self-supporting hanging basket secondary beam to fix it.

[0018] Furthermore, step 4 specifically involves:

[0019] Step 41: Hoist the main beam of the base basket to the designed position, pass the self-supporting hanging basket rod through the reserved hole of the main beam of the base basket, and install the lower nut to fix it under the main beam of the base basket;

[0020] Step 42: Install the secondary beams of the basket evenly above the main beam and between the cast-in-place piles.

[0021] Furthermore, step 6 specifically involves:

[0022] Step 61: Install the bottom basket template. The bottom basket template includes irregular templates and standard templates. Install irregular templates at the U-shaped positions on both sides of the cast-in-place pile, and install standard templates at the remaining positions.

[0023] Step 62: Tie the cast-in-place steel reinforcement cage and weld it to the steel reinforcement reserved in the precast components of the ship.

[0024] Step 63: Install the side formwork, connect it with high-strength bolts and install upper and lower tie rods;

[0025] Step 64: After inspection and approval, pour concrete.

[0026] Furthermore, step 7 specifically involves:

[0027] Step 71: After the concrete strength reaches the standard, lower the lower nut at the bottom of the self-supporting hanging basket rod by 1cm-2cm to demold the bottom basket formwork and remove the standard formwork and special-shaped formwork.

[0028] Step 72: Remove the secondary beams of the bottom basket and the prefabricated support frame for the berthing vessel;

[0029] Step 73: Temporarily suspend the main beam of the bottom basket, loosen the lower nut at the bottom, pull the self-supporting hanging basket rod upwards, and then remove the main beam of the bottom basket;

[0030] Step 74: Sequentially dismantle the self-supporting hanging basket secondary beams, self-supporting hanging basket main beams, and self-supporting hanging basket columns, and transfer the materials to the next pier location;

[0031] The dismantling sequence of the bottom basket formwork in step 71 is as follows: first, dismantle the standard formwork, temporarily suspend or lift the standard formwork onto the cast-in-place structure, and then move the irregular formwork horizontally to the original position of the standard formwork before dismantling it.

[0032] A self-supporting hanging basket includes a self-supporting hanging basket column, a self-supporting hanging basket main beam, a self-supporting hanging basket secondary beam, and a self-supporting hanging basket hanger. The self-supporting hanging basket main beam is fixedly installed on the top of the self-supporting hanging basket column. A plurality of self-supporting hanging basket secondary beams are evenly arranged along the length of the self-supporting hanging basket main beam. The self-supporting hanging basket hanger is installed in the vertical direction of the self-supporting hanging basket secondary beam.

[0033] The four self-supporting hanging basket columns form a set of support column units. Within the support column unit, the self-supporting hanging basket columns are arranged in a rectangular pattern. Channel steel connectors are provided between adjacent self-supporting hanging basket columns to form a top horizontal support and four vertical X-shaped diagonal supports.

[0034] Furthermore, the self-supporting hanging basket column is a seamless steel pipe filled with concrete, and the channel steel connectors between adjacent self-supporting hanging basket columns in each group of support column units are welded connections.

[0035] Furthermore, the main beam of the self-supporting hanging basket is a double-web H-beam, the secondary beam of the self-supporting hanging basket is a double-jointed I-beam, and the hanging rod of the self-supporting hanging basket is a threaded steel bar;

[0036] The self-supporting hanging basket main beam is erected on top of the support column unit; the self-supporting hanging basket secondary beam overlaps the self-supporting hanging basket main beam; the self-supporting hanging basket hanger rod passes through the reserved installation hole of the self-supporting hanging basket secondary beam and is fixed by the upper nut.

[0037] A precast berthing component, which is a precast concrete slab, and also includes a berthing component support for assisting in the installation of the precast berthing component.

[0038] Furthermore, the berthing prefabricated component support includes a pair of parallel berthing prefabricated component support main beams, and also includes an open frame structure composed of berthing prefabricated component support sub-beams. The berthing prefabricated component support sub-beams are supported on the upper end of the open frame, and the berthing prefabricated component is disposed within the open frame.

[0039] The beneficial effects of this invention are:

[0040] 1. Enables continuous operation, overcomes tidal limitations, and improves construction efficiency. The self-supporting hanging basket of this invention allows for all-weather construction when the tide level is not higher than the pile top, completely eliminating the dependence of traditional corbel construction methods on low tide levels and avoiding underwater operations. By designing a self-supporting hanging basket to avoid underwater operations, effective continuous operation is achieved, thus improving construction efficiency.

[0041] 2. Self-supporting hanging baskets are reusable, reducing construction costs. All components of a self-supporting hanging basket can be completely removed and reused for the next construction project, and the elevation of the bottom basket can be adjusted using double nuts.

[0042] 3. The structural design is scientific and reasonable. It adopts a self-supporting hanging basket with a double nut structure, which can adjust the elevation of the main beam of the bottom basket. At the same time, the support column unit composed of the self-supporting hanging basket columns is reinforced with horizontal bars and diagonal braces around its perimeter. Channel steel connectors are installed between adjacent self-supporting hanging basket columns in the support unit to form a top horizontal support and four vertical X-shaped diagonal supports, which significantly improves the overall wind and wave resistance and construction stability.

[0043] 4. Precast and cast-in-place integrated design enhances the overall structural integrity. The precast components are precisely positioned by supports, and their reserved steel bars are welded to the cast-in-place beam steel reinforcement skeleton. The precast components are precast concrete slabs, which can be installed quickly and improve the dock's resistance to ship impacts. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is an elevation view of the self-supporting hanging basket hoisting system in this invention;

[0046] Figure 2 for Figure 1 Enlarged view of point A;

[0047] Figure 3 This is a plan view of the self-supporting hanging basket in this invention;

[0048] Figure 4 for Figure 3 Enlarged view of point B;

[0049] Figure 5 This is an elevation view of the assembly of the prefabricated berthing components and the prefabricated berthing component support in this invention.

[0050] Figure 6 This is a plan view of the assembly of the prefabricated berthing components and the prefabricated berthing component support in this invention;

[0051] Figure 7 Construction process for deep-water cast-in-place construction method Figure 1 ;

[0052] Figure 8 Construction process for deep-water cast-in-place construction method Figure 2 ;

[0053] Reference numerals in the attached diagram: 1-Self-supporting hanging basket; 11-Self-supporting hanging basket main beam; 12-Self-supporting hanging basket secondary beam; 13-Self-supporting hanging basket hanger; 14-Self-supporting hanging basket column; 21-Bottom basket main beam; 22-Bottom basket formwork; 23-Bottom basket secondary beam; 4-Cast-in-place pile; 6-Boat-mounted precast component; 61-Boat-mounted precast component support; 611-Boat-mounted precast component support main beam; 612-Boat-mounted precast component support secondary beam; 7-Cast-in-place crossbeam. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0055] Example 1: Refer to Figures 1-4 Self-supporting hanging baskets include

[0056] Self-supporting hanging basket columns 14: These are seamless steel pipes with a diameter of 180mm and a wall thickness of 10mm, filled with C40 concrete. Four self-supporting hanging basket columns 14 are arranged in a rectangular group to form a support column unit. Channel steel connectors are welded between adjacent steel pipes to form X-shaped diagonal braces on the top horizontal and four vertical surfaces, enhancing the overall resistance to lateral forces.

[0057] The self-supporting hanging basket main beam 11 is made of double-web H-beam and is set on the self-supporting hanging basket column 14. Installation holes are opened along the length direction for fixing the self-supporting hanging basket secondary beam 12.

[0058] Self-supporting hanging basket secondary beam 12: adopts double-jointed I-beams, which are connected to the self-supporting hanging basket main beam 11 by Ф39mm precision rolled threaded steel.

[0059] Self-supporting hanging basket hanger 13: Made of threaded steel, it is fixed to the secondary beam 12 of the self-supporting hanging basket by means of an upper nut.

[0060] Example 2: Refer to Figure 5 and Figure 6 The berthing prefabricated component support 61 consists of a main beam 611 and a secondary beam 612. The main beam 611 is made of 25# double-I-beams, and the secondary beam 612 is made of 25# single I-beams. A pair of main beams 611 are arranged in parallel, with the secondary beams 612 connected to their lower ends to form an open frame structure. Prefabricated berthing components 6 are mounted on this open frame formed by the secondary beams 612.

[0061] Example 3: Deep-water cast-in-place construction method, referring to Figure 7 and Figure 8 This includes the following steps:

[0062] Step 1: Process the self-supporting hanging basket 1 and related construction accessories in the storage yard behind the dock. Use flatbed trucks to transport the processed components to the construction site and use crawler cranes for auxiliary hoisting.

[0063] Step 2: Construction of cast-in-place piles. Anchor holes are reserved in the cast-in-place piles. According to the dimensions of the self-supporting hanging basket column 14, multiple rows of anchor holes are reserved at the pile head of the cast-in-place pile 4 for the installation of the self-supporting hanging basket column 14.

[0064] Step 3: Install the self-supporting hanging basket 1. Sleeve a PVC pipe at the bottom of the self-supporting hanging basket column 14 and install the support column unit in the corresponding anchor hole position. Horizontal bars and diagonal braces are also installed around the self-supporting hanging basket column 14 for overall reinforcement. Then, install the self-supporting hanging basket main beam 11, self-supporting hanging basket secondary beam 12 and self-supporting hanging basket hanger 13 in sequence. The self-supporting hanging basket hanger 13 is fixed to the upper end face of the self-supporting hanging basket secondary beam 12 with upper nuts.

[0065] The installation of the self-supporting hanging basket column 14 is as follows: a PVC pipe is installed at the bottom of the self-supporting hanging basket column 14; gravel is filled into the anchoring hole; a crawler crane is used to lift the self-supporting hanging basket column 14 above the cast-in-place pile 4; workers assist in aligning the multiple rows of self-supporting hanging basket columns 14 with the pre-reserved anchoring hole positions on the pile head of the cast-in-place pile 4; the crane slowly lowers the self-supporting hanging basket column 14 until it is inserted into the anchoring hole and stably positioned; horizontal bars and diagonal braces are installed around the self-supporting hanging basket column 14 for overall reinforcement; geotextile is tightly stuffed into the gap between the self-supporting hanging basket column 14 and the anchoring hole; mortar is wrapped around the gap between the PVC pipe on the outside of the self-supporting hanging basket column 14 and the hole.

[0066] The installation of the self-supporting hanging basket main beam 11 is as follows: a self-supporting hanging basket main beam 11 is installed on each side above the self-supporting hanging basket column 14 along the arrangement direction of the cast-in-place piles 4. The self-supporting hanging basket main beam 11 is composed of I-beams, welded closed at the top and bottom, and equipped with stiffening plates to ensure the overall stability of the structure.

[0067] The installation of the self-supporting hanging basket secondary beam 12 is specifically as follows: multiple rows of transverse self-supporting hanging basket secondary beams 12 are installed sequentially above the self-supporting hanging basket main beam 11. The self-supporting hanging basket secondary beam 12 is composed of double-jointed I-beams. Installation holes are reserved at the overlap between the self-supporting hanging basket secondary beam 12 and the self-supporting hanging basket main beam 11 to ensure the connection between the self-supporting hanging basket main beam 11 and the self-supporting hanging basket secondary beam 12.

[0068] The installation of the self-supporting hanging basket hanger 13 is as follows: The self-supporting hanging basket hanger 13 is made of precision-rolled threaded steel. Holes are pre-drilled in the secondary beam 12 and the main beam 21 of the bottom basket. The upper part of the self-supporting hanging basket hanger 13 is fixed to the secondary beam 12 via an upper nut. The lower part is fixed to the main beam 21 of the bottom basket via a lower nut. In addition to meeting the connection length from top to bottom, the vertical length of the self-supporting hanging basket hanger 13 also allows for a 30cm-50cm allowance for height adjustment. During installation, verticality should be strictly controlled to prevent breakage and accidents.

[0069] Step 4: Install the main beam 21 of the basket. Use lifting equipment to raise the main beam 21 to the lower basket position. Pass the self-supporting hanging basket rod 13 through the pre-drilled hole in the main beam 21 and secure it with nuts below. Adjust the height of the main beam 21 according to the height of the basket template 22 and the secondary beam 23 to meet design requirements. Install the secondary beam 23, ensuring it is evenly distributed above the main beam 21 and between the cast-in-place piles to guarantee uniform weight distribution.

[0070] Step 5: Install the precast berthing component support 61. The precast berthing component support 61 is composed of rods and can be installed simultaneously with the secondary beams 23 of the bottom basket after the main beam 21 of the bottom basket is installed. The installation position should be controlled at the position where the precast berthing component 6 is to be installed, generally at the side end of the main beam 21 of the bottom basket. Then install the precast berthing component 6. The precast berthing component 6 is a reinforced concrete structural material and is prefabricated in the factory. After the precast berthing component support 61 is installed, use lifting equipment to lift the precast berthing component 6 and place it in the precast berthing component support 61 for installation. The top elevation of the precast berthing component 6 after installation should be the bottom elevation of the cast-in-place structure. The precast berthing component 6 can be completed simultaneously with the bottom basket formwork 22.

[0071] Step 6: Install the bottom basket formwork 22. The bottom basket formwork 22 includes irregular-shaped formwork and standard formwork. The irregular-shaped formwork is installed at the U-shaped positions on both sides of the cast-in-place pile 4, with two pieces for each pile. The standard formwork consists of standard sections. Except for the irregular-shaped formwork, the others are installed according to the standard formwork design. Install the cast-in-place steel reinforcement cage. The reinforcement can be installed on-site or hoisted into place as a whole. The cast-in-place reinforcement should be welded to the reinforcement reserved in the precast components 6 to ensure the structural load-bearing performance. Install the side formwork. After the bottom basket formwork 22 and the precast components 6 are installed and adjusted to the design elevation, install the four side formworks. The side formwork is connected by high-strength bolts, and tie rods should be installed at the top and bottom to ensure the safety and stability of the structure. Pour concrete. Before pouring concrete, check whether the self-supporting hanging basket, bottom basket, and other parts meet the construction technical specifications. After passing the inspection, pour the concrete.

[0072] Step 7: Remove the cast-in-place formwork. The bottom formwork 22 can be removed after 7 days of concrete pouring and when the concrete strength reaches 75% of the design strength. Removal is mainly achieved by adjusting the upper nuts on the self-supporting hanging basket rods 13, lowering them by 1-2 cm to allow the bottom formwork 22 to adjust downwards and separate from the bottom concrete. The removal sequence for the bottom formwork 22 is as follows: First, remove the standard formwork, temporarily stacking it on the cast-in-place structure using a manual or automatic hoist. Then, remove the irregularly shaped formwork by horizontally moving it to the original position of the standard formwork.

[0073] The secondary beam 23 of the bottom basket and the precast component support 61 for mooring the ship are dismantled. The secondary beam 23 of the bottom basket and the precast component support 61 for mooring the ship can still be dismantled simultaneously. They are lifted directly onto the cast-in-place structure by a hoist and temporarily stacked at the next pier position.

[0074] To dismantle the main beam 21 of the bottom basket, first use a hoist to temporarily attach it to the self-supporting hanging basket main beam 11. After loosening the lower nut at the bottom, pull the self-supporting hanging basket lifting rod 13 upwards. After completion, safely lift and dismantle the main beam 21 of the bottom basket.

[0075] The remaining self-supporting hanging baskets, including the main beam 11, secondary beam 12, and column 14, are dismantled. First, the secondary beam 12 is dismantled, followed by the main beam 11 and column 14. The dismantled components are then transferred to the next pier location via water transport equipment.

[0076] The self-supporting hanging basket of this invention is reusable, reducing construction costs. All components of the self-supporting hanging basket can be completely disassembled and reused. The bottom basket elevation can be adjusted using double nuts, allowing for continuous installation even when the water level does not exceed 20cm from the pile head, reducing technical difficulty and eliminating safety hazards. The structural versatility and suitability for special environments are enhanced by the self-supporting hanging basket design, replacing traditional on-site scaffolding, clamping, or through-bar methods. This satisfies both the functional requirements of cast-in-place structures and the installation needs of prefabricated components for mooring, reducing technical difficulty and creating economic value. The support column units formed by the self-supporting hanging basket columns are reinforced with horizontal bars and diagonal braces around their perimeter. Channel steel connectors are installed between adjacent self-supporting hanging basket columns within the support unit, forming a top horizontal support and four vertical X-shaped diagonal supports, significantly improving overall wind and wave resistance and construction stability. The precast berthing components are precisely positioned using the precast berthing component bracket, and their reserved steel bars are welded to the cast-in-place beam steel reinforcement skeleton. The precast berthing components are precast concrete slabs, which can be installed quickly and improve the dock's resistance to ship impact.

[0077] The foregoing has provided a detailed description of a deep-water cast-in-place construction method, a self-supporting hanging basket, and prefabricated berthing components provided by this invention. Specific examples have been used to illustrate the structure and working principle of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this invention.

Claims

1. A deep-water cast-in-place construction method, characterized in that: Includes the following steps, Step 1: Process the self-supporting hanging basket (1), bottom basket accessories and berthing prefabricated component accessories in the yard, and transport them to the site after processing; Step 2: Reserve anchor holes for the cast-in-place pile (4). Reserve anchor holes at the pile head of the cast-in-place pile (4) for installing the self-supporting hanging basket column (14). Step 3: Install the self-supporting hanging basket (1), install the support column unit in the corresponding anchor hole position, and set up horizontal bars and diagonal braces around it for reinforcement; then install the self-supporting hanging basket main beam (11), self-supporting hanging basket secondary beam (12) and self-supporting hanging basket hanger (13) in sequence. The self-supporting hanging basket hanger (13) is fixed to the upper end face of the self-supporting hanging basket secondary beam (12) by the upper nut; Step 4: Install the main beam (21) and secondary beam (23) of the bottom basket. Pass the self-supporting hanging basket rod (13) through the reserved hole of the main beam (21) of the bottom basket and install the lower nut below the main beam (21) of the bottom basket for fixation. Adjust the length of the self-supporting hanging basket rod (13) by adjusting the lower nut below the main beam (21) of the bottom basket, leaving an adjustment range of 30cm-50cm. Control the height of the bottom basket to meet the design requirements of the bottom basket template (22) and the secondary beam (23) of the bottom basket. Continuous operation can still be achieved when the sea level does not exceed 20cm above the top of the cast-in-place pile (4). Step 5: Install the precast berthing component (6). Install the precast berthing component bracket (61) on the side of the main beam (21) of the bottom basket, and then hoist the precast berthing component (6) into the precast berthing component bracket (61) and position it. The top elevation of the precast berthing component (6) is consistent with the bottom design elevation of the cast-in-place structure. Step 6: Cast-in-place structure construction, install bottom basket formwork (22) and side formwork, tie steel bars, and pour concrete; Step 7: System dismantling and maintenance. The bottom basket formwork (22), bottom basket secondary beam (23), berthing precast component support (61), bottom basket main beam (21), and self-supporting hanging basket (1) are dismantled in sequence, and maintenance and transportation are carried out. Step 3 specifically involves: Step 31: Install self-supporting hanging basket column (14), and put PVC pipe on the bottom of the self-supporting hanging basket column (14). Each cast-in-place pile (4) is equipped with a self-supporting hanging basket (1). The gap between the self-supporting hanging basket column (14) and the anchor hole is filled with geotextile. The gap between the PVC pipe on the outside of the self-supporting hanging basket column (14) and the hole is wrapped with mortar. Step 32: Install the self-supporting hanging basket main beam (11) on the top of the self-supporting hanging basket column (14), and set stiffening plates at the joints; Step 33: Install multiple rows of transverse self-supporting hanging basket secondary beams (12) on the self-supporting hanging basket main beam (11). Step 34: Pass the self-supporting hanging basket rod (13) through the reserved hole of the self-supporting hanging basket secondary beam (12), and install nuts on the top of the self-supporting hanging basket secondary beam (12) for fixation; Step 4 specifically involves: Step 41: Hoist the main beam (21) of the bottom basket to the design position, pass the self-supporting hanging basket rod (13) through the reserved hole of the main beam (21) of the bottom basket, and install the lower nut for fixation below the main beam (21); Step 42: Install the secondary beams (23) of the bottom basket evenly above the main beam (21) and between the cast-in-place piles. Step 6 specifically involves: Step 61: Install the bottom basket template (22). The bottom basket template (22) includes special-shaped templates and standard templates. Special-shaped templates are installed at the U-shaped positions on both sides of the cast-in-place pile (4), and standard templates are installed at the other positions. Step 62: Tie the cast-in-place steel reinforcement cage and weld it to the steel reinforcement reserved in the precast components (6) of the ship; Step 63: Install the side formwork, connect it with high-strength bolts and install upper and lower tie rods; Step 64: After inspection and approval, pour concrete; Step 7 specifically involves: Step 71: After the concrete strength reaches the standard, lower the lower nut of the self-supporting hanging basket rod (13) by 1cm-2cm to demold the bottom basket formwork (22) and remove the standard formwork and special formwork; Step 72: Remove the bottom basket secondary beam (23) and the berthing prefabricated component support (61); Step 73: Temporarily suspend the main beam (21) of the bottom basket, loosen the lower nut at the bottom, pull up the self-supporting hanging basket rod (13) and then remove the main beam (21). Step 74: Sequentially dismantle the self-supporting hanging basket secondary beam (12), the self-supporting hanging basket main beam (11), and the self-supporting hanging basket column (14), and transfer the materials to the next pier location; The dismantling sequence of the bottom basket template (22) in step 71 is as follows: first, dismantle the standard template, temporarily suspend or lift the standard template onto the cast-in-place structure, and then move the irregular template horizontally to the original position of the standard template before dismantling it; The self-supporting hanging basket (1) includes a self-supporting hanging basket column (14), a self-supporting hanging basket main beam (11), a self-supporting hanging basket secondary beam (12), and a self-supporting hanging basket hanger (13). The self-supporting hanging basket main beam (11) is fixedly installed on the top of the self-supporting hanging basket column (14). Several self-supporting hanging basket secondary beams (12) are evenly arranged along the length of the self-supporting hanging basket main beam (11). The self-supporting hanging basket hanger (13) is installed in the vertical direction of the self-supporting hanging basket secondary beam (12). The four self-supporting hanging basket columns (14) form a set of support column units. Within the support column unit, the self-supporting hanging basket columns (14) are arranged in a rectangular shape. Channel steel connectors are provided between adjacent self-supporting hanging basket columns (14) to form a top horizontal support and four vertical X-shaped diagonal supports. The berthing precast component (6) is a precast concrete slab. The berthing precast component bracket (61) is used to assist in the installation of the berthing precast component (6). The berthing precast component bracket (61) includes a pair of parallel berthing precast component bracket main beams (611) and an open frame structure composed of berthing precast component bracket secondary beams (612). The berthing precast component bracket main beams (611) are supported on the upper end of the open frame structure. The berthing precast component (6) is set inside the open frame structure.

2. The deep-water cast-in-place construction method according to claim 1, characterized in that: The self-supporting hanging basket column (14) is a seamless steel pipe filled with concrete. In each group of the support column units, the channel steel connectors between adjacent self-supporting hanging basket columns (14) are welded.

3. The deep-water cast-in-place construction method according to claim 1, characterized in that: The self-supporting hanging basket main beam (11) is a double-web H-beam, the self-supporting hanging basket secondary beam (12) is a double-jointed I-beam, and the self-supporting hanging basket hanger (13) is a threaded steel bar. The self-supporting hanging basket main beam (11) is erected on the top of the support column unit; the self-supporting hanging basket secondary beam (12) overlaps the self-supporting hanging basket main beam (11); the self-supporting hanging basket hanger (13) passes through the reserved installation hole of the self-supporting hanging basket secondary beam (12) and is fixed by the upper nut.

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