A deep-water bridge pile foundation construction method and construction device

Abstract

The present invention discloses a method for deep-water bridge pile foundation construction, including surveying the riverbed rock surface topography, selecting a flat base surface with a low thickness of the covering layer; dropping a telescopic positioning frame from the water to the flat base surface, and under hydraulic drive, the clamping base located at the bottom of the telescopic positioning frame continuously dives and performs a vertical downward anchoring action until the clamping base is fixed on the flat base surface to form a supporting foot point; unfolding the platform at the end of the telescopic positioning frame to form a construction platform erected on the water surface; moving the drilling machine to the construction platform to perform deep-water drilling. It also includes a deep-water bridge pile foundation construction device. The invention realizes the rapid assembly and turnover of the construction platform in deep water areas, improving the efficiency of construction; and the telescopic positioning piles are combined with the floating floats during the leveling, which effectively solves the problem of long degree of freedom and poor rigidity of the telescopic positioning piles, and improves the stability of the construction platform.

Description

Technical Field

[0001] The invention relates to the field of bridge pile foundation construction, and in particular to a deep-water bridge pile foundation construction method and a construction device. Background Art

[0002] In the process of fixing the bridge pile foundation, it is necessary to drill and cast holes at specific locations. For deepwater areas, the common construction method of pile foundation fixing is to build a fixed platform and move the drilling machine to the fixed platform to facilitate drilling by the drilling machine. Common floating platforms are pile foundation fixing platforms.

[0003] The problem with floating platforms is that they require a relatively large anchor system for positioning. The water level of the reservoir changes greatly and frequently. If a floating platform is used, the anchor rope must be adjusted frequently and at any time, which affects the efficiency of construction. In addition, the impact force of the drilling rig on the platform is large, which can easily cause the floating platform to shake, resulting in a decrease in the accuracy of drilling.

[0004] The pile foundation fixed platform solves the above problems to a certain extent. For example, it is not affected by the water level of the reservoir, and the shaking caused by the impact of the drilling rig on the platform is small. However, the positioning piles have a long degree of freedom and poor rigidity. Especially in the positioning process, in order to fix the positioning piles, the construction period is long, and the removal of the platform frame and positioning piles is time-consuming, which still affects the efficiency of construction. Moreover, the better the fixing effect, the thicker the positioning piles and the more supporting structures, which greatly increases the cost of construction and is not easy to be turned over.

[0005] Therefore, a construction method of a drilling platform is needed to further improve the construction efficiency of deep-water bridge pile foundations. Summary of the invention

[0006] The purpose of the present invention is to provide a deep-water bridge pile foundation construction method and a construction device to solve the technical problems of low construction efficiency and difficult platform movement in the prior art.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] The present invention provides a deep-water bridge pile foundation construction method, comprising:

[0009] Survey the riverbed rock surface topography and select a flat base surface with low overburden thickness;

[0010] A telescopic positioning frame is dropped from the water onto the flat base surface, and under hydraulic drive, a clamping base at the bottom of the telescopic positioning frame continuously dives and performs a vertical downward anchoring action until the clamping base is fixed on the flat base surface to form a supporting foot point;

[0011] Expanding the platform at the end of the telescopic positioning frame to form a construction platform erected on the water surface;

[0012] The drilling machine is moved to the construction platform to perform deep-water drilling.

[0013] As a preferred solution of the present invention, during transportation, the telescopic positioning frame floats on the water surface via multiple stages of floats;

[0014] Wherein, the multi-stage float provides buoyancy to the telescopic positioning frame in shallow water areas.

[0015] As a preferred solution of the present invention, during the positioning and construction process of the telescopic positioning frame, the multi-stage float gradually moves upward to provide an upward guiding force for the telescopic positioning frame;

[0016] The multi-stage floats gradually form a floating platform, and the floating platform is arranged at the bottom of the construction platform.

[0017] The present invention provides a deep-water bridge pile foundation construction device, comprising a plurality of telescopic positioning frames with different diameters, wherein the telescopic positioning frames are provided with hydraulic drive devices, and the hydraulic drive devices can drive the telescopic positioning frames to achieve telescoping;

[0018] A plurality of the telescopic positioning frames can be connected in series in the radial direction to form positioning piles, the top telescopic positioning frame passes through the water surface and is installed with a construction platform, and the bottom telescopic positioning frame is provided with a clamping base;

[0019] A lap connection platform, through which two adjacent telescopic positioning frames can be lapped together, and a multi-stage float is arranged on the surrounding side of the lap connection platform, and the multi-stage float is connected to the construction platform through a guide chain;

[0020] Among them, the overall telescopic length of the telescopic positioning frame after the overlapping is completed is greater than the construction depth. Driven by the hydraulic drive device, the telescopic positioning frame extends from bottom to top in sequence, and the multi-stage float in the extended position moves from the overlapping platform to the construction platform to provide a vertical upward guiding force to the telescopic positioning frame.

[0021] As a preferred solution of the present invention, the diameter of the overlapping platform decreases from bottom to top; the diameter of the construction platform is larger than the diameter of the overlapping platform at the bottom, and the guide chain is vertically arranged between the overlapping platform and the construction platform.

[0022] As a preferred solution of the present invention, the multi-stage float comprises a retaining ring installed on the peripheral side of the overlapping platform, and a floating platform member is engaged with the retaining ring;

[0023] The upper and lower ends of the floating platform are both equipped with fixing seats, which are located in a straight line in the vertical direction. The upper fixing seat is connected to one end of the guide chain upward, and the lower fixing seat is connected to the other end of the guide chain downward.

[0024] As a preferred solution of the present invention, the floating platform component is a truncated cone structure, and the diameter of the top of the floating platform component is smaller than the diameter of the bottom of the floating platform component, and the floating platform component is engaged with the retaining ring.

[0025] As a preferred solution of the present invention, the construction platform is provided with a plurality of ring rotating assemblies which are sequentially sleeved together according to the radius from small to large, and the ring rotating assemblies are used to retract and extend the guide chain;

[0026] The ring rotating assembly includes a support seat arranged on the construction platform and an outer ring body arranged on the support seat, the inner part of the outer ring body is wrapped with an inner ring body, and the outer part of the outer ring body is rotatably mounted with a plurality of sleeves, and the number of the sleeves is the same as the number of the floating platform parts;

[0027] A first gear is disposed on the top of the inner ring body, a second gear is disposed on the outer wall of the inner ring body, the first gear passes through the outer ring body and meshes with the inner wall of the sleeve, and the second gear passes through the outer ring body and is connected to a rotation driving motor;

[0028] When the rotary drive motor rotates, the inner ring body is driven to rotate inside the outer ring body, and at the same time, the sleeve rotates on the outer ring body.

[0029] As a preferred solution of the present invention, one end of the guide chain is installed on the outer ring body, and the other end of the guide chain is installed on the sleeve. As the height of the overlapping platform decreases, the floating platform is driven by the guide chain to disengage from the overlapping platform, and at this time, the other side of the guide chain is surrounded and arranged on the retaining ring. The sleeve rotates and continuously releases the guide chain downward to guide the descending position of the overlapping platform.

[0030] As a preferred solution of the present invention, a plurality of telescopic positioning frames are provided on the construction platform, and the telescopic positioning frames provide rigid support for the construction platform.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention adopts a plurality of telescopic positioning frames that dive deep downwards. During construction, the platform height is higher than the water surface and can be temporarily assembled, which is convenient for lateral and longitudinal movement during turnover. It is not affected by the water level of the reservoir and is convenient for turnover and recovery.

[0033] 2. The present invention uses buoyancy to position the positioning piles used for positioning, and pulls the falling direction during the positioning falling process to prevent the positioning piles from shifting during the diving process, thereby effectively improving the positioning accuracy.

[0034] 3. The present invention also provides a device that uses multiple telescopic positioning frames, i.e., positioning piles, to support the construction platform to improve the stability of its overlap; and because the overlap and recovery operations of the telescopic positioning frames are simple, and they can float on the water surface during the overlap and recovery process, the difficulty of transportation is reduced, which is convenient for improving construction efficiency;

[0035] 4. The present invention combines the telescopic positioning pile with the layered float, which effectively solves the problem of long degree of freedom and poor rigidity of the telescopic positioning pile and improves the stability of the construction platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0037] Figure 1 A schematic flow chart of a deep-water bridge pile foundation construction method is provided for the present invention;

[0038] Figure 2 The present invention provides a structural schematic diagram of a deep-water bridge pile foundation construction device;

[0039] Figure 3 The present invention provides Figure 2 A schematic diagram of the structure in which the telescopic positioning frame is opened in the embodiment shown;

[0040] Figure 4 The present invention provides Figure 2 A schematic diagram of the structure of the retaining ring in the illustrated embodiment;

[0041] Figure 5 The present invention provides Figure 2 A schematic structural diagram of the floating platform member in the illustrated embodiment;

[0042] Figure 6 The present invention provides Figure 2 A schematic diagram of the structure of the ring rotating assembly in the illustrated embodiment;

[0043] Figure 7 The present invention provides Figure 2 A schematic diagram of the front structure of the construction platform in the illustrated embodiment.

[0044] The numbers in the figure represent the following:

[0045] 1- telescopic positioning frame; 2- hydraulic drive device; 3- construction platform; 4- clamping base; 5- overlapping platform; 6- multi-stage float; 7- guide chain; 8- ring rotating assembly;

[0046] 601-retaining ring; 602-fixing seat; 603-floating platform member;

[0047] 801-support seat; 802-outer ring body; 803-inner ring body; 804-sleeve; 805-first gear; 806-second gear; 807-rotation drive motor. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] like Figure 1 As shown, the present invention provides a deep-water bridge pile foundation construction method, comprising the following steps:

[0050] 1. Survey the riverbed rock surface topography and select a flat base surface with low overburden thickness;

[0051] 2. Drag the telescopic positioning frame to the top of the flat base surface for precise positioning;

[0052] 3. The telescopic positioning frame is lowered from the water to the flat surface. Under the hydraulic drive, the clamping base at the bottom of the telescopic positioning frame continuously dives and performs a vertical downward anchoring action until the clamping base is fixed on the flat surface to form a supporting foot point;

[0053] 4. Expand the platform at the end of the telescopic positioning frame to form a construction platform that can be erected on the water surface under hydraulic drive;

[0054] 5. Move the drilling machine to the construction platform and carry out deep-water drilling and pouring operations to complete the bridge foundation construction at this deep-water location.

[0055] The present invention adopts a plurality of telescopic positioning frames that dive deep downwards, which can be temporarily assembled during construction, thereby reducing the difficulty of transporting the telescopic positioning frames. The length of the telescopic positioning frames is only driven by hydraulic pressure, so that rigid support for the construction platform can be achieved in the vertical direction. Buoyancy is used to pull the positioning piles during their falling process, thereby preventing the positioning piles from shifting during the diving process, thereby effectively improving the positioning accuracy.

[0056] When fixing or dismantling the construction platform, only the hydraulic part needs to be operated. The construction period of positioning and dismantling is short. The removal of the platform frame and positioning piles saves time and effort, and most of the materials can be recycled and reused.

[0057] In order to further reduce the difficulty of transporting the telescopic positioning frame, during transportation, the telescopic positioning frame floats on the water surface through multiple stages of floats.

[0058] Among them, the multi-stage float provides buoyancy to the telescopic positioning frame in shallow water areas.

[0059] In particular, when constructing positioning piles in the prior art, due to the long degree of freedom of the positioning piles, as the positioning piles continue to dive, their angles tend to shift, and in this case, the positioning piles need to be strengthened. In the present invention, during the positioning construction process of the telescopic positioning frame, the multi-level floats gradually move upward, and the floats arranged on the sides of the telescopic positioning frame are used at multiple levels to support the positioning process, provide an upward guiding force to the telescopic positioning frame, prevent it from tilting during the positioning process, and further improve the positioning accuracy. The device is simple and easy to transport.

[0060] As the positioning piles of the telescopic positioning frame continue to descend, the sides of the telescopic positioning frame are connected to the multi-stage floats, which gradually form a floating platform, which is arranged at the bottom of the construction platform. The floating platform can strengthen the positioning of the telescopic positioning frame.

[0061] The present invention positions the construction platform based on a telescopic positioning frame, and its rigidity is inferior to that of a general steel cylinder structure, so the present invention needs to further strengthen its rigidity. Figures 2 to 7 As shown, the present invention provides a deep-water bridge pile foundation construction device, including a plurality of telescopic positioning frames 1 that can be combined with each other, a lap platform 5 for lap-joining the telescopic positioning frames 1 together, and a multi-stage float 6 arranged on the lap platform 5.

[0062] A plurality of telescopic positioning frames 1 with different diameters are provided with a hydraulic drive device 2, and the hydraulic drive device 2 can drive the telescopic positioning frame 1 to achieve telescoping.

[0063] Several telescopic positioning frames 1 can be connected in series in the radial direction to form positioning piles. The top telescopic positioning frame 1 passes through the water surface and is installed with a construction platform 3. The telescopic positioning frame 1 at the bottom is provided with a clamping base 4, which can be an existing common fixing component, such as a suction cup.

[0064] A plurality of telescopic positioning frames 1 are arranged on the construction platform 3, and the telescopic positioning frames 1 provide rigid support for the construction platform 3. Figure 2 In the embodiment, the telescopic positioning frame 1 has three rows, forming supporting feet.

[0065] In particular, two adjacent telescopic positioning frames 1 can be overlapped together through the overlapping platform 5 , and a multi-stage float 6 is arranged on the surrounding side of the overlapping platform 5 , and the multi-stage float 6 is connected to the construction platform 3 through a guide chain 7 .

[0066] Among them, the overall telescopic length of the telescopic positioning frame 1 is greater than the construction depth after the overlap is completed. Driven by the hydraulic drive device 2, the telescopic positioning frame 1 is extended from bottom to top in sequence, and the multi-stage float 6 in the extended position moves from the overlap platform 5 to the construction platform 3 to provide a vertical upward guiding force to the telescopic positioning frame 1.

[0067] The present invention improves the stability of the construction platform by the following means:

[0068] 1. Use multiple telescopic positioning frames 1 to construct the construction platform 3 to improve the stability of its overlap; and since the overlap and release of the telescopic positioning frames 1 are simple, it does not affect the construction efficiency;

[0069] 2. Multi-stage buoyancy is used to support the peripheral side of the telescopic positioning frame 1. When the drilling rig impacts the platform, the vibration force is transferred to the float, so that the impact force of the drilling rig on the platform is greatly weakened, thereby improving the stability of the construction platform 3.

[0070] In order to further improve the telescopic performance of the telescopic positioning frame 1, the diameter of the overlapping platform 5 decreases from bottom to top; the diameter of the construction platform 3 is larger than the diameter of the overlapping platform 5 located at the bottom, and the guide chain 7 is vertically arranged between the overlapping platform 5 and the construction platform 3.

[0071] At the same time, for the multi-stage floats 6, the diameter of the overlapping platform 5 located below is larger than the diameter of the overlapping platform 5 located above, which can effectively layer the multi-stage floats 6 and prevent the multi-stage floats 6 of different heights from being entangled together when moving. At the same time, the multi-stage floats 6 can form a circle when all float up, which is convenient for observing the descending depth of each telescopic positioning frame 1.

[0072] Specifically, the multi-stage float 6 includes a retaining ring 601 installed on the side of the overlapping platform 5, and a floating platform component 603 is engaged with the retaining ring 601.

[0073] Fixed seats 602 are installed at both upper and lower ends of the floating platform 603. The fixed seats 602 are located in a straight line in the vertical direction. The upper fixed seat 602 is connected to one end of the guide chain 7 upward, and the lower fixed seat 602 is connected to the other end of the guide chain 7 downward.

[0074] The lengths of the guide chains 7 are different on different overlapping platforms 5. As the height of the overlapping platforms 5 continues to decrease, the guide chains 7 can pull the overlapping platforms 5 onto the construction platform 3 to prevent the telescopic positioning frame from tilting in the horizontal direction.

[0075] The content of the floating platform 603 is air, which can provide sufficient buoyancy.

[0076] In order to facilitate the floating platform 603 to move above and below the overlapping platform 5, the floating platform 603 is a truncated cone structure, and the diameter of the top of the floating platform 603 is smaller than the diameter of the bottom of the floating platform 603. The floating platform 603 is engaged with the retaining ring 601.

[0077] When the lap platform 5 is in the initial position, the floating platform member 603 is fixedly arranged on the retaining ring 601, and can provide buoyancy for the lap platform 5 and the device connected to the lap platform 5. As the lap platform 5 descends, the floating platform member 603 passes through the retaining ring 601, and the floating platform member 603 leaves the lap platform 5 and floats above the lap platform 5, and can provide tension in the vertical direction, solving the problem that the telescopic positioning frame 1 has a long degree of freedom and poor rigidity.

[0078] In order to further improve the rigidity of the telescopic positioning frame 1 and prevent it from tilting during the positioning process, a plurality of ring rotating assemblies 8 which are sequentially nested together according to the radius from small to large are provided on the construction platform 3, and the ring rotating assemblies 8 are used to retract and extend the guide chain 7.

[0079] Among them, the ring rotation assembly 8 includes a support seat 801 set on the construction platform 3 and an outer ring body 802 set on the support seat 801, the inner ring body 803 is wrapped inside the outer ring body 802, and a plurality of sleeves 804 are rotatably installed outside the outer ring body 802, and the number of sleeves 804 is the same as the number of floating platform parts 603.

[0080] A first gear 805 is disposed on the top of the inner ring body 803 , and a second gear 806 is disposed on the outer wall of the inner ring body 803 . The first gear 805 passes through the outer ring body 802 and meshes with the inner wall of the sleeve 804 . The second gear 806 passes through the outer ring body 802 and is connected to a rotation driving motor 807 .

[0081] When the rotary drive motor 807 rotates, the inner ring body 803 is driven to rotate inside the outer ring body 802 , and at the same time, the sleeve 804 rotates on the outer ring body 802 .

[0082] The above-mentioned ring rotating assembly 8 can automatically store the floating platform parts 603 located on the same layer, which is convenient for the storage and deployment of the device, improves the efficiency of the construction, and is more conducive to preventing the floating platform parts 603 from rising at different rates.

[0083] In this embodiment, one end of the guide chain 7 is installed on the outer ring body 802, and the other end of the guide chain 7 is installed on the sleeve 804. As the height of the lap platform 5 decreases, the floating platform 603 is driven by the guide chain 7 to escape from the lap platform 5, and at this time, the other side of the guide chain 7 is surrounded and arranged on the retaining ring 601. The sleeve 804 rotates and continuously releases the guide chain 7 downward, thereby guiding the lap platform 5 to the descending position.

[0084] When the lap platform 5 descends, the rotary drive motor 807 rotates, and the guide chain 7 is extended, providing support for the telescopic positioning frame 1 during the extension process; when the lap platform 5 rises, the guide chain 7 is shortened, and at the same time, the floating platform part 603 can enter the fixed ring again, so as to facilitate the recovery of the telescopic positioning frame 1.

[0085] Through the deep-water bridge pile foundation construction method and construction device of this embodiment, the rapid assembly and turnover of the construction platform in the deep-water area can be realized, thereby improving the efficiency of the construction; and the telescopic positioning piles are combined with the layered floats to effectively solve the problems of the long degree of freedom and poor rigidity of the telescopic positioning piles, thereby improving the stability of the construction platform.

[0086] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A deep-water bridge pile foundation construction device, characterized in that: include: A plurality of telescopic positioning frames (1) having different diameters, wherein the telescopic positioning frames (1) are provided with hydraulic drive devices (2), and the hydraulic drive devices (2) are capable of driving the telescopic positioning frames (1) to achieve telescoping; A plurality of the telescopic positioning frames (1) can be connected in series in a radial direction to form positioning piles, the top telescopic positioning frame (1) passes through the water surface and is installed with a construction platform (3), and the bottom telescopic positioning frame (1) is provided with a clamping base (4); A lap connection platform (5), through which two adjacent telescopic positioning frames (1) can be lapped together, a multi-stage float (6) is arranged on the peripheral side of the lap connection platform (5), and the multi-stage float (6) is connected to the construction platform (3) through a guide chain (7); Wherein, after the overlapping is completed, the overall telescopic length of the telescopic positioning frame (1) is greater than the construction depth. Driven by the hydraulic drive device (2), the telescopic positioning frame (1) is extended from bottom to top in sequence, and the multi-stage float (6) in the extended position moves from the overlapping platform (5) to the construction platform (3) to provide a vertical upward guiding force to the telescopic positioning frame (1).

2. A deep-water bridge pile foundation construction device according to claim 1, characterized in that: The diameter of the overlapping platform (5) decreases from bottom to top; the diameter of the construction platform (3) is larger than the diameter of the overlapping platform (5) located at the bottom, and the guide chain (7) is vertically arranged between the overlapping platform (5) and the construction platform (3).

3. A deep-water bridge pile foundation construction device according to claim 2, characterized in that: The multi-stage float (6) comprises a retaining ring (601) installed on the peripheral side of the overlapping platform (5), and a floating platform component (603) is engaged with the retaining ring (601); The upper and lower ends of the floating platform (603) are both equipped with fixed seats (602), and the fixed seats (602) are located on a straight line in the vertical direction. The fixed seat (602) located at the top is connected to one end of the guide chain (7) upward, and the fixed seat (602) located at the bottom is connected to the other end of the guide chain (7) downward.

4. A deep-water bridge pile foundation construction device according to claim 3, characterized in that: The floating platform component (603) is a truncated cone structure, and the diameter of the top of the floating platform component (603) is smaller than the diameter of the bottom of the floating platform component (603). The floating platform component (603) is engaged with the retaining ring (601).

5. A deep-water bridge pile foundation construction device according to claim 4, characterized in that: The construction platform (3) is provided with a plurality of ring rotating assemblies (8) which are fitted together in sequence from small to large according to the radius, and the ring rotating assemblies (8) are used to retract and extend the guide chain (7); The ring rotating assembly (8) comprises a support seat (801) arranged on the construction platform (3) and an outer ring body (802) arranged on the support seat (801), the inner part of the outer ring body (802) is wrapped with an inner ring body (803), and the outer part of the outer ring body (802) is rotatably mounted with a plurality of sleeves (804), and the number of the sleeves (804) is the same as the number of the floating platform parts (603); A first gear (805) is disposed on the top of the inner ring body (803), a second gear (806) is disposed on the outer wall of the inner ring body (803), the first gear (805) passes through the outer ring body (802) and meshes with the inner wall of the sleeve (804), and the second gear (806) passes through the outer ring body (802) and is connected to a rotation driving motor (807); When the rotary drive motor (807) rotates, the inner ring body (803) is driven to rotate inside the outer ring body (802), and at the same time, the sleeve (804) rotates on the outer ring body (802).

6. A deep-water bridge pile foundation construction device according to claim 5, characterized in that: One end of the guide chain (7) is mounted on the outer ring body (802), and the other end of the guide chain (7) is mounted on the sleeve (804). As the height of the overlapping platform (5) decreases, the floating platform member (603) is driven by the guide chain (7) to disengage from the overlapping platform (5), and at this time, the other side of the guide chain (7) is arranged around the retaining ring (601). The sleeve (804) rotates and continuously releases the guide chain (7) downward, thereby guiding the overlapping platform (5) to a descending position.

7. A deep-water bridge pile foundation construction device according to claim 1, characterized in that: A plurality of telescopic positioning frames (1) are arranged on the construction platform (3), and the telescopic positioning frames (1) provide rigid support for the construction platform (3).

8. A deep-water bridge pile foundation construction method according to the device according to any one of claims 1 to 7, characterized in that: include: Survey the riverbed rock surface topography and select a flat base surface with low overburden thickness; A telescopic positioning frame is dropped from the water onto the flat base surface, and under hydraulic drive, a clamping base at the bottom of the telescopic positioning frame continuously dives and performs a vertical downward anchoring action until the clamping base is fixed on the flat base surface to form a supporting foot point; Expanding the platform at the end of the telescopic positioning frame to form a construction platform erected on the water surface; The drilling machine is moved to the construction platform to perform deep-water drilling.

9. A deep-water bridge pile foundation construction method according to claim 8, characterized in that: During transportation, the telescopic positioning frame floats on the water surface through multiple stages of buoyancy; Wherein, the multi-stage float provides buoyancy to the telescopic positioning frame in shallow water areas.

10. A deep-water bridge pile foundation construction method according to claim 9, characterized in that: During the positioning and construction process of the telescopic positioning frame, the multi-stage float gradually moves upward to provide an upward guiding force for the telescopic positioning frame; The multi-stage floats gradually form a floating platform, and the floating platform is arranged at the bottom of the construction platform.

Images