A rapid construction method for steel casing in underwater inclined rock surface or exposed bedrock

Abstract

This application relates to the technical field of steel casing construction, and proposes a rapid construction method for steel casings on underwater inclined rock surfaces or exposed bedrocks, including the following steps: S1: Conduct underwater scanning on the inclined rock surface of the construction area and perform three-dimensional modeling based on the data obtained from the scanning to obtain the inclination angle of the inclined rock surface; S2: Process an inclined opening at the bottom of the steel casing that is adapted to the inclination angle of the inclined rock surface; S3: Move the piling barge to the steel casing construction area and drop the anchor for positioning; A guiding frame is erected on one side of the piling barge, and the guiding frame includes a first guiding seat, and a first guiding hole for the steel casing to pass through is provided on the first guiding seat; S4: Hoist the steel casing to be inserted into the first guiding hole of the first guiding seat and align the inclined opening end of the steel casing with the inclined rock surface; S5: Drive the steel casing to the designed elevation; S6: Pour the leveling layer. This application has the effect of facilitating the driving of steel casings on underwater inclined rock surfaces.

Description

Technical Field

[0001] This application relates to the field of steel casing construction, and particularly to a rapid construction method for steel casings on underwater inclined rock surfaces or exposed bedrocks. Background Art

[0002] Before the construction of the pile hole for an underwater cast-in-place pile, in order to prevent the top structure from collapsing during the subsequent pile hole construction process, it is usually necessary to drive a steel casing at the pile position before the pile hole construction. The steel casing is used to support the top structure of the pile hole to improve the stability during the subsequent construction process of the cast-in-place pile hole.

[0003] In the related art, for the construction of underwater cast-in-place piles on inclined rock surfaces or inclined exposed bedrocks formed by manually dumping and backfilling stones, when a piling barge drives a steel casing on such terrains, since the port of the traditional steel casing is a flat port, due to the slope of the inclined rock surface, even if the top of the steel casing is limited during driving, the steel casing will still tilt during driving because of the uneven force when the bottom port contacts the inclined rock surface, making it difficult to drive the steel casing. Therefore, there is room for improvement. Summary of the Invention

[0004] In order to facilitate the driving of steel casings on underwater inclined rock surfaces or inclined bedrocks, this application provides a rapid construction method for steel casings on underwater inclined rock surfaces or exposed bedrocks.

[0005] A rapid construction method for steel casings on underwater inclined rock surfaces or exposed bedrocks provided by this application adopts the following technical solutions:

[0006] A rapid construction method for steel casings on underwater inclined rock surfaces or exposed bedrocks includes the following steps:

[0007] S1: Acquisition of terrain information: Conduct underwater scanning on the inclined rock surface of the construction area and perform three-dimensional modeling based on the scanned data to obtain the inclination angle of the inclined rock surface;

[0008] S2: Processing of the steel casing: According to the inclination angle of the inclined rock surface, process an inclined port on the bottom of the steel casing that is adapted to the inclination angle of the inclined rock surface;

[0009] S3: Positioning of the piling barge: Move the piling barge to the steel casing construction area and drop the anchor for positioning; A guiding frame is erected on one side of the piling barge. The guiding frame includes a first guiding seat, the first guiding seat is located below the pile driver of the piling barge, and a first guiding hole for the steel casing to pass through is opened on the first guiding seat;

[0010] S4: Hoisting operation of the steel casing: Lift the steel casing to be inserted into the first guiding hole of the first guiding seat and adjust the position and orientation of the steel casing so that the inclined port end of the steel casing is aligned with the inclined rock surface;

[0011] S5: Steel casing driving operation: Drive the steel casing to the designed elevation by a pile driving barge;

[0012] S6: Pouring operation of the leveling layer: Inject concrete slurry into the bottom of the steel casing to form a leveling layer.

[0013] By adopting the above technical solution, after obtaining the inclination angle of the underwater inclined rock surface first and then processing the bottom end of the steel casing into an inclined opening adapted to the actual inclination angle of the inclined rock surface, when driving the steel casing subsequently, after aligning the inclined opening end of the steel casing with the inclined rock surface, then drive the steel casing into the inclined rock surface by a pile driving barge. Utilize the inclined opening end of the steel casing to increase the contact area between the steel casing and the inclined rock surface, enabling the steel casing to better fit the inclined rock surface, reducing the situation that the steel casing inclines during driving due to uneven force, and lowering the difficulty of driving the steel casing on the inclined rock surface. After driving the steel casing into the inclined rock surface, pour a leveling layer at the bottom of the steel casing, which is beneficial to leveling the inclined rock surface inside the steel casing, providing better construction conditions for the subsequent pile hole construction of the cast-in-place pile, and reducing the situation that the drill bit of the drill slips and inclines due to the inclined rock surface when drilling the pile hole inside the steel casing subsequently.

[0014] Preferably, in step S2, after processing an inclined opening at the bottom end of the steel casing, weld a number of saw teeth at the inclined opening end of the steel casing.

[0015] By adopting the above technical solution, it is beneficial to further increase the friction between the steel casing and the inclined rock surface through a number of saw teeth at the inclined opening end, and at the same time make the steel casing easier to be driven into the inclined rock surface.

[0016] Preferably, a first positioning assembly is arranged on the first guide seat. The first positioning assembly includes a number of first driving cylinders. The number of the first driving cylinders is evenly distributed around the axial direction of the first guide hole and the piston rods of the first driving cylinders are all arranged towards the axial direction of the first guide hole; first positioning parts are arranged at the ends of the piston rods of the first driving cylinders;

[0017] In step S4, after the position orientation adjustment of the steel casing is completed, drive the corresponding first positioning part to abut against the outer periphery of the steel casing through the first driving cylinder.

[0018] By adopting the above technical solution, driving the corresponding first positioning part to abut against the steel casing through a number of first driving cylinders can realize the support and positioning of the steel casing, which is beneficial to reducing the situation that the steel casing inclines during subsequent driving.

[0019] Preferably, the first positioning part includes a first support seat, and a first positioning wheel is rotatably connected to the first support seat. The axial direction of the rotation axis of the first positioning wheel is horizontal.

[0020] By adopting the above technical solution, through the setting of the first positioning wheel, when the steel casing is inserted by the pile driver on the piling barge subsequently, the first positioning wheel can roll as the steel casing moves downward, so as to realize clamping and positioning of the steel casing while reducing the friction force between the first positioning part and the steel casing.

[0021] Preferably, the axial direction of the rotation axis of the first positioning wheel is perpendicular to the axial direction of the first driving oil cylinder; a rotary driving part for driving the first support to rotate around the axial direction of the first driving oil cylinder is arranged on the piston rod of the first driving oil cylinder; a rotary driving part for driving the first positioning wheel to rotate around its own rotation axis is arranged on the first support;

[0022] In step S4, when adjusting the position and orientation of the steel casing, the first support is driven to rotate by the rotary driving part until the axial direction of the rotation axis of the first positioning wheel is in the vertical state, and the first positioning wheel is driven to abut against the outer periphery of the steel casing by the first driving oil cylinder. Finally, the first positioning wheel is driven to rotate by the rotary driving part to adjust the position and orientation of the steel casing until the inclined end of the steel casing is aligned with the inclined rock surface;

[0023] In step S4, after the position and orientation adjustment of the steel casing is completed, the first support is driven to rotate by the rotary driving part until the axial direction of the rotation axis of the first positioning wheel is in the horizontal state.

[0024] By adopting the above technical solution, after the first positioning wheel with the axial direction of the rotation axis in the vertical state is abutted against the steel casing by the first driving part, the first positioning wheel is driven to rotate by the rotary driving part, and then the steel casing can be driven to rotate around its own axis, which is convenient for adjusting the position and orientation of the steel casing so that the inclined end of the steel casing is aligned with the inclined rock surface. After the position and orientation of the steel casing are adjusted, the first support is driven to rotate by the rotary driving part until the axis of the first positioning wheel is in the horizontal state, which is convenient for the first positioning wheel to rotate as the steel casing moves downward during the subsequent insertion of the steel casing, which is beneficial to reducing the friction force between the first positioning part and the steel casing and reducing the situation that the first positioning part restricts the downward movement of the steel casing.

[0025] Preferably, a second guide seat is erected at the bottom of the first guide seat, and the first guide seat is further provided with a lifting assembly for driving the second guide seat to lift in the vertical direction; the second guide seat is provided with a second guide hole for the steel casing to pass through;

[0026] A second positioning assembly is arranged on the second guide seat. The second positioning assembly includes a plurality of second driving oil cylinders. The plurality of second driving oil cylinders are evenly distributed around the axial direction of the second guide hole, and the piston rods of the second driving oil cylinders all face the axial direction of the second guide hole. The piston rods of the second driving oil cylinders are all connected with second positioning parts;

[0027] In step S4, after the position orientation of the steel casing is adjusted, the corresponding second positioning part is abutted against the outer periphery of the steel casing under the drive of the second driving oil cylinder.

[0028] By adopting the above technical solution, before hoisting the steel casing, the lifting assembly is used to drive the second guiding seat to move above the inclined rock surface underwater; after adjusting the position and orientation of the steel casing so that the inclined end of the steel casing is aligned with the underwater inclined rock surface, the corresponding second positioning part is abutted against the steel casing under the drive of the second driving oil cylinder on the second guiding seat, so as to further support and position the steel casing through the second positioning assembly, making it less likely to bend and tilt during the subsequent insertion of the steel casing.

[0029] Preferably, the lifting assembly includes a plurality of lifting oil cylinders vertically installed at the bottom of the first guiding seat, and the piston rods of the lifting oil cylinders are all connected to the second guiding seat.

[0030] By adopting the above technical solution, the piston rod of the lifting oil cylinder is driven to extend and retract to drive the second support to lift and lower in the vertical direction, facilitating the lifting adjustment of the position of the second support.

[0031] Preferably, in step S6, before injecting concrete into the bottom of the steel casing, cohesive soil is filled into the bottom of the steel casing.

[0032] By adopting the above technical solution, since the inclined rock surface is backfilled with stones, when directly injecting concrete slurry into the steel casing, the concrete slurry is likely to leak from the gaps in the inclined rock surface. By injecting cohesive soil into the steel casing before grouting, the gaps on the inclined rock surface are blocked by the cohesive soil, thereby restricting the subsequent leakage of the concrete slurry through the gaps on the inclined rock surface and facilitating the smooth construction of the leveling layer.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. After obtaining the inclination angle of the underwater inclined rock surface first, the bottom end of the steel casing is processed into an inclined mouth adapted to the inclination angle of the inclined rock surface according to the inclination angle of the inclined rock surface. During the subsequent insertion of the steel casing, the contact area between the steel casing and the inclined rock surface can be increased through the inclined end of the steel casing, reducing the inclination of the steel casing during the insertion process; at the same time, the setting of the inclined mouth makes it easier for the steel casing to be driven into the inclined rock surface.

[0035] 2. When adjusting the position and orientation of the steel casing so that the inclined end of the steel casing is aligned with the inclined rock surface, the first support is driven to rotate by the rotation driving member until the axial direction of the rotation axis of the first positioning wheel is in the vertical state, and at the same time, the positioning wheel on the first support is abutted against the outer periphery of the steel casing by the first driving oil cylinder. Then, the first positioning wheel is driven to rotate by the rotary driving member, and the position and orientation of the steel casing are adjusted by using a plurality of rotating first positioning wheels.

[0036] Before inserting and driving the steel casing, the first support is driven to rotate by the rotation driving member until the axial direction of the rotation axis of the first positioning wheel is in a horizontal state; realizing the support and positioning of the steel casing through the first positioning assembly. At the same time, when the subsequent steel casing is inserted and moved downward, the first positioning wheel can rotate with the downward movement of the steel casing, which is beneficial to reducing the situation that the first positioning part restricts the downward movement of the steel casing. Brief Description of the Drawings

[0037] Figure 1 It is a schematic diagram of the state when the embodiment of the present application is used to illustrate the adjustment of the position and orientation of the steel casing.

[0038] Figure 2 is Figure 1 An enlarged schematic view of part A in

[0039] Figure 3 is Figure 1 An enlarged schematic view of part B in

[0040] Figure 4 It is a schematic diagram of the state when the embodiment of the present application is used to illustrate the driving of the steel casing.

[0041] Figure 5 is Figure 4 An enlarged schematic view of part C in

[0042] Figure 6 It is a schematic diagram of the embodiment of the present application for schematically constructing a leveling layer.

[0043] Description of Reference Numerals:

[0044] 1. Inclined rock surface; 2. Piling barge; 3. Guide frame; 31. First guide seat; 310. First guide hole; 311. First driving oil cylinder; 312. Rotation driving member; 313. First support; 314. First positioning wheel; 315. Rotary driving member; 33. Lifting oil cylinder; 32. Second guide seat; 320. Second guide hole; 321. Second driving oil cylinder; 322. Second support; 323. Second positioning wheel; 4. Steel casing; 5. Leveling layer. Detailed Embodiment

[0045] Next, in combination with the attached Figures 1-6 The present application will be further described in detail.

[0046] The embodiment of the present application discloses a rapid construction method for a steel casing on an underwater inclined rock surface or an exposed bedrock. Referring to Figure 1 , it includes the following steps:

[0047] S1: Terrain information acquisition:

[0048] S1.1: Scan the inclined rock surface 1 in the construction area with an underwater 3D scanner to obtain data such as the shape, size, and inclination angle of the underwater inclined rock surface 1;

[0049] S1.2: Process and create a 3D model with 3D modeling software such as Surfer based on the obtained data;

[0050] S1.3: Obtain the inclination angle of the inclined rock surface 1 from the 3D model of the inclined rock surface 1.

[0051] S2: Steel casing 4 processing: According to the inclination angle data of the inclined rock surface 1, process a bevel at the bottom of the steel casing 4 that is adapted to the inclination angle of the inclined rock surface 1; and weld and fix a number of saw teeth at the bevel end of the steel casing 4. The saw teeth are made of alloy material, and a cutting edge is provided at one end of the saw teeth away from the steel casing 4.

[0052] By processing a bevel at the bottom end of the steel casing 4 and welding and fixing saw teeth on the bevel, when the steel casing 4 is subsequently inserted and driven, after aligning the bevel end of the steel casing 4 with the underwater inclined rock surface 1 and then inserting and driving the steel casing 4, it is beneficial to increase the contact area between the steel casing 4 and the inclined rock surface 1 through the bevel end of the steel casing 4 and reduce the situation where the steel casing 4 tilts when the steel casing 4 is subsequently inserted and driven.

[0053] S3: Piling barge 2 in place: Move the piling barge 2 to the construction area of the steel casing 4 and drop the anchor for positioning.

[0054] Refer to Figure 1 and Figure 2 As shown in

[0055] On one side of the piling barge 2, a guiding frame 3 is installed. The guiding frame 3 includes a first guiding seat 31 and a second guiding seat 32. The first guiding seat 31 is fixed on one side of the piling barge 2 and the first guiding seat 31 is directly below the pile driver of the piling barge 2. A first guiding hole 310 for the steel casing 4 to pass through is provided on the first guiding seat 31.

[0056] The first guiding seat 31 is also provided with a first positioning component. The first positioning component includes four groups of first driving cylinders 311 installed on the first guiding seat 31. The four groups of first driving cylinders 311 are evenly distributed around the axis of the first guiding hole 310 and the axis of the first driving cylinder 311 is perpendicular to the axis of the first guiding hole 310. The piston rods of the first driving cylinders 311 all face the axis of the first guiding hole 310; the ends of the piston rods of the first driving cylinders 311 are all provided with first positioning parts. The first positioning parts include a first support 313. A first positioning wheel 314 is rotatably connected to the first support 313. The axial direction of the rotation axis of the first positioning wheel 314 is perpendicular to the axial direction of the first driving cylinder 311.

[0056] The piston rod end of the first driving oil cylinder 311 is also provided with a rotary driving member 312 for driving the first support 313 to rotate around the axis of the first driving oil cylinder 311. The rotary driving member 312 includes a hydraulic rotary joint coaxially connected to the piston rod end of the first driving oil cylinder 311, and the first support 313 is connected to the rotating end of the hydraulic rotary joint, so as to realize the driving connection of the rotary driving member 312 to the first support 313.

[0057] The first support 313 is also provided with a slewing driving member 315 for driving the first positioning wheel 314 to rotate. The slewing driving member 315 includes a slewing motor installed on one side of the first support 313, and the output end of the slewing motor is coaxially connected to the first positioning wheel 314, so as to realize the driving connection of the slewing driving member 315 to the first positioning wheel 314.

[0058] Refer to Figure 1 and Figure 3 As shown in the figure, the second guide seat 32 is located directly below the first guide seat 31, and a second guide hole 320 for the casing to pass through is formed in the second guide seat 32. A lifting assembly for driving the second support 322 to move up and down in the vertical direction is arranged at the bottom of the first guide seat 31. The lifting assembly includes four groups of lifting oil cylinders 33 vertically and downwardly installed at the bottom of the first guide seat 31, and the piston rods of the lifting oil cylinders 33 are all connected to the upper surface of the second guide seat 32, so as to realize the vertical lifting of the second guide seat 32.

[0059] The second guide seat 32 is also provided with a second positioning assembly. The second positioning assembly includes four groups of second driving oil cylinders 321 arranged on the second guide seat 32. The four groups of second driving oil cylinders 321 are evenly distributed around the axis of the second guide hole 320. The axis of the second driving oil cylinder 321 is perpendicular to the axis of the second guide hole 320 and the piston rod of the second driving oil cylinder 321 faces the axis of the second guide hole 320. Second positioning parts are arranged at the piston rod ends of the second driving oil cylinders 321. The second positioning parts include second supports 322. The second supports 322 are connected to the piston rod ends of the second driving oil cylinders 321. A second positioning wheel 323 is rotatably connected to the second supports 322, and the axis of rotation of the second positioning wheel 323 is horizontally arranged.

[0060] S4: Hoisting operation of the steel casing 4, and the specific steps are as follows:

[0061] S4.1: The transport ship transports the steel casing 4 to be inserted to the construction area;

[0062] S4.2: The guide frame 3 is in place: several lifting oil cylinders 33 at the bottom of the first guide seat 31 are used to drive the second guide seat 32 to move down to above the inclined rock surface 1 underwater;

[0063] S4.3: Lift the steel casing 4 from the transport ship by a crane ship and pass the steel casing 4 through the first guiding hole 310 on the first guiding seat 31 and the second guiding hole 320 on the second guiding seat 32 in sequence;

[0064] S4.4: Adjust the position and orientation of the steel casing 4: Refer to Figure 1 and Figure 2 , drive the first support 313 to rotate by the rotary driving member 312 until the axial direction of the rotation axis of the first positioning wheel 314 is in the vertical state; and drive the corresponding first support 313 to move towards the steel casing 4 by the first driving oil cylinder 311 until the first positioning wheel 314 abuts against the outer periphery of the steel casing 4; drive the first positioning wheel 314 to rotate by the slewing driving member 315 to adjust the position and orientation of the steel casing 4; at the same time, continue to lower the steel casing 4 in cooperation with the crane ship, and cooperate with the underwater operation personnel to assist in observing the position and orientation of the inclined end of the steel casing 4 underwater until the inclined end of the steel casing 4 is aligned and attached to the inclined rock surface 1 underwater;

[0065] S4.5: Position the steel casing 4: Refer to Figure 4 and Figure 5 , drive the first support 313 to swing by the rotary driving member 312 until the axial direction of the rotation axis of the first positioning wheel 314 is in the horizontal state. At the same time, drive the second support 322 to move towards the steel casing 4 by the second driving oil cylinder 321 until the second positioning wheel 323 on the second support 322 abuts against the steel casing 4;

[0066] S4.6: Disconnect the connection between the steel casing 4 and the crane ship sling.

[0067] When it is necessary to adjust the position and orientation of the steel casing 4 so that the inclined end of the steel casing 4 is aligned with the inclined rock surface 1, after the first driving cylinder 311 drives the first positioning wheel 314 with the axial direction of the rotation axis in the vertical state to abut against the outer periphery of the steel casing 4, the slewing driving member 315 can be used to drive the first positioning wheel 314 to rotate to drive the steel casing 4 to rotate, and the adjustment of the position and orientation of the steel casing 4 can be realized.

[0068] After the adjustment of the position and orientation of the steel casing 4 is completed, drive the first support 313 to drive the first positioning wheel 314 to rotate by the rotary driving member 312 so that the axial direction of the rotation axis of the first positioning wheel 314 is in the horizontal state. On the one hand, it realizes the support and positioning of the steel casing 4 by the first positioning component, and restricts the displacement of the steel casing 4 when the steel casing 4 is subsequently inserted and driven. On the other hand, the first positioning wheel 314 with the axial direction of the rotation axis in the horizontal state can rotate with the downward movement of the steel casing 4, reducing the friction force between the first positioning wheel 314 and the steel casing 4, and facilitating the smoother downward movement of the steel casing 4 when the subsequent pile driver inserts and drives the steel casing 4.

[0069] By providing the second guiding seat 32 and the second positioning assembly, the second driving oil cylinder 321 on the second guiding seat 32 is used to drive the corresponding second positioning wheel 323 to abut against the outer periphery of the steel casing 4, which is beneficial to further support and position the steel casing 4, improve the overall stiffness of the steel casing 4, and further prevent the steel casing 4 from tilting during subsequent insertion.

[0070] S5: Insertion operation of the steel casing 4: The steel casing 4 is inserted to the designed elevation by the pile driver on the pile driving barge 2;

[0071] S6: Pouring operation of the leveling layer 5: Refer to Figure 4 and Figure 6 , the specific steps are as follows:

[0072] S6.1: Clean the soft layers such as silt on the surface of the inclined rock surface 1 inside the steel casing 4;

[0073] S6.2: Pump out the seawater inside the steel casing 4 through a pumping device;

[0074] S6.3: Pour viscous soil into the steel casing 4 and compact it to seal the gaps on the inclined rock surface 1 inside the steel casing 4;

[0075] S6.4: Pouring of the leveling layer 5: Inject rapid-setting concrete slurry into the steel casing 4 to form the leveling layer 5. Specifically, self-compacting concrete is used for the concrete slurry. After the injection of the concrete slurry is completed, the concrete slurry is vibrated by a vibrating device.

[0076] By pouring and compacting viscous soil into the steel casing 4 before injecting the concrete slurry, it is beneficial to seal the gaps on the surface of the inclined rock surface 1 with the viscous soil, reducing the leakage of the concrete slurry through the gaps on the surface of the inclined rock surface 1 after subsequent injection of the concrete slurry, which may cause difficulties in the construction of the leveling layer 5.

[0077] By constructing the leveling layer 5 at the bottom of the steel casing 4, the inclined rock surface 1 inside the steel casing 4 is leveled, reducing the situation that the drill bit tilts and slips due to the inclined rock surface 1 when drilling the pile hole of the subsequent cast-in-place pile, which may cause difficulties in drilling the pile hole of the cast-in-place pile, and facilitating the subsequent smooth construction of the cast-in-place pile.

[0078] In this application, after obtaining the inclination angle of the underwater inclined rock surface 1, a bevel is processed at the bottom of the steel casing 4 according to the inclination angle to be adapted to the inclination angle of the inclined rock surface 1. During subsequent insertion of the steel casing 4, after aligning the bevel end of the steel casing 4 with the inclined rock surface 1, the insertion construction of the steel casing 4 is carried out. This is beneficial to increase the contact area between the steel casing 4 and the underwater inclined rock surface 1 through the bevel end of the steel casing 4, making it difficult for the steel casing 4 to tilt during subsequent insertion of the steel casing 4 and facilitating the smooth driving of the steel casing 4 into the inclined rock surface 1.

[0079] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A method for rapid construction of steel casing on underwater inclined rock surface or exposed bedrock, characterized in that: The following steps are involved: S1: topographic information acquisition: performing underwater scanning of the inclined rock surface (1) in the construction area and performing three-dimensional modeling based on the data obtained by the scanning to obtain the inclination angle of the inclined rock surface (1); S2: Processing of the steel casing (4): according to the inclination angle of the inclined rock surface (1), a beveled opening matching the inclination angle of the inclined rock surface (1) is processed at the bottom of the steel casing (4); S3: The piling ship (2) is positioned: the piling ship (2) is moved to the construction area of ​​the steel casing (4) and anchored to position; a guide frame (3) is set up on one side of the piling ship (2), and the guide frame (3) comprises a first guide seat (31), the first guide seat (31) is located below the pile driver of the piling ship (2), and a first guide hole (310) is opened on the first guide seat (31) for the steel casing (4) to pass through; S4: Steel casing (4) hoisting operation: hoisting the steel casing (4) to be inserted into the first guide hole (310) of the first guide seat (31) and adjusting the position and orientation of the steel casing (4) so ​​that the oblique end of the steel casing (4) is aligned with the inclined rock surface (1); S5: Steel casing (4) driving operation: The steel casing (4) is driven to the designed depth by the pile-driving ship (2); S6: pouring operation of the leveling layer (5): injecting concrete slurry into the bottom of the steel casing (4) to form the leveling layer (5); A first positioning assembly is arranged on the first guide seat (31), and the first positioning assembly comprises a plurality of first driving cylinders (311), the plurality of first driving cylinders (311) are evenly distributed around the axial direction of the first guide hole (310), and the piston rods of the first driving cylinders (311) are all arranged axially toward the first guide hole (310); and the ends of the piston rods of the first driving cylinders (311) are all provided with first positioning portions; In step S5, before inserting the steel casing (4), the first driving cylinder (311) is used to drive the corresponding first positioning portion to abut against the outer periphery of the steel casing (4); The first positioning portion comprises a first support (313), the first support (313) is rotatably connected to a first positioning wheel (314), and the rotating axis of the first positioning wheel (314) is horizontally arranged; The rotation axis of the first positioning wheel (314) is arranged perpendicular to the axis of the first driving cylinder (311); the piston rod of the first driving cylinder (311) is provided with a rotating driving member (312) for driving the first support (313) to rotate around the axis of the first driving cylinder (311); the first support (313) is provided with a rotating driving member (315) for driving the first positioning wheel (314) to rotate around its own rotation axis; In step S4, when adjusting the position of the steel casing (4), the first support (313) is driven to rotate by the rotary drive member (312) until the rotary axis of the first positioning wheel (314) is in a vertical state, and the first positioning wheel (314) is driven to abut against the outer periphery of the steel casing (4) by the first driving cylinder (311), and finally the first positioning wheel (314) is driven to rotate by the rotary drive member (315) to adjust the position and direction of the steel casing (4) until the oblique end of the steel casing (4) is aligned with the inclined rock surface (1); In step S4, after the position and orientation of the steel casing (4) are adjusted, the first support (313) is driven to rotate by the rotary drive member (312) until the rotary axis of the first positioning wheel (314) is in a horizontal state; In step S6, before injecting concrete into the bottom of the steel casing (4), clay soil is filled into the bottom of the steel casing (4).

2. The method for rapid construction of steel casing on underwater inclined rock surface or exposed bedrock according to claim 1, characterized in that: In step S2, after a bevel is machined at the bottom end of the steel casing (4), a plurality of saw teeth are welded at the bevel end of the steel casing (4).

3. The method for rapid construction of steel casing on underwater inclined rock surface or exposed bedrock according to claim 1, characterized in that: A second guide seat (32) is mounted at the bottom of the first guide seat (31), and the first guide seat (31) is also provided with a lifting assembly for driving the second guide seat (32) to move up and down in a vertical direction; the second guide seat (32) is provided with a second guide hole (320) for the steel casing (4) to pass through; A second positioning assembly is arranged on the second guide seat (32), and the second positioning assembly comprises a plurality of second driving cylinders (321), the plurality of second driving cylinders (321) are evenly distributed around the axial direction of the second guide hole (320), and the piston rods of the second driving cylinders (321) are all oriented toward the axial direction of the second guide hole (320), and the piston rods of the second driving cylinders (321) are all connected to a second positioning portion; In step S4, after the position and orientation of the steel casing (4) are adjusted, the corresponding second positioning portion is driven by the second driving cylinder (321) to abut against the outer periphery of the steel casing (4).

4. The method for rapid construction of steel casing on underwater inclined rock surface or exposed bedrock according to claim 3, characterized in that: The lifting assembly comprises a plurality of lifting cylinders (33) vertically mounted downwardly at the bottom of the first guide seat (31), and piston rods of the lifting cylinders (33) are all connected to the second guide seat (32).

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