A deep-water bridge pile foundation construction auxiliary device and construction process

Abstract

The present application relates to the technical field of deep-water bridge pile foundation construction, and in particular to a deep-water bridge pile foundation construction auxiliary device and construction process, including: a sliding limit ring, a sliding gap is left between the outer peripheral side of the sliding limit ring and the inner wall of the casing; a fixed ring, a plurality of fixed rods are connected between the fixed ring and the sliding limit ring, and the fixed rods are hollow and have openings at both ends; a hollow mounting tube, the mounting tube is coaxially rotatably connected to the fixing ring, and the inner cavity of the mounting tube is connected to the inner cavity of the fixing rod; a plurality of stirring rods, the stirring rods are connected to the mounting tube, and the inner cavity of the stirring rods is connected to the inner cavity of the mounting tube, and a feed hole is provided on the stirring rods; a driving unit for driving the mounting tube to rotate, the driving unit is connected to the sliding limit ring, and the driving unit is connected to the mounting tube; the present application has the effect of completing the cleaning of the mud attached to the inner wall of the casing while loosening the mud settled and solidified inside the casing to ensure the molding quality of the bridge pile foundation column.

Description

Technical Field

[0001] The present application relates to the technical field of deep-water bridge pile foundation construction, and in particular to a deep-water bridge pile foundation construction auxiliary device and construction process. Background Art

[0002] Deep-water bridges refer to bridges whose pier structures or part of their foundations are located in deep water. Such bridges not only bear the gravity load and vehicle load from the bridge structure itself, but also need to withstand environmental effects such as waves, currents, earthquakes, and dynamic loads caused by wind. Deep-water bridges usually have the characteristics of a deeper wading depth of the substructure and a larger span, and their spanning capacity is gradually increasing with the increase of water depth and span.

[0003] Due to the great depth of sea water, mud wall protection technology is generally used to improve safety during construction. The prior art discloses an underwater pile foundation construction device for a bridge, which includes a steel casing connected up and down, a drilling mechanism and a mud transfer box floating on the water surface, the drill bit of the drilling mechanism is located in the steel casing, a slurry inlet and a slurry discharge port are provided in the steel casing, the slurry inlet and the slurry discharge port are respectively connected to the bottom and the top of the mud transfer box, an explosion-proof port is provided on the casing, a one-way valve for allowing water to push open is provided at the explosion-proof port, a normally open valve is provided on the slurry inlet, the water baffle and the slurry baffle are both arc-shaped, and a connecting rod is hinged between the two water baffles; it also includes a water bag, the water bag is fixed in the steel casing, and the water inlet of the water bag is aligned with the explosion-proof port, and the water bag is ring-shaped after being filled with water.

[0004] Regarding the above-mentioned related technologies, since deep-water pile foundation holes are generally constructed using a floating platform, during the construction process using the mud wall protection technology, or after the pile foundation hole is drilled, the construction may need to be suspended due to various factors such as weather reasons at sea or equipment failure. At this time, the mud inside the casing will settle and solidify due to standing still, and part of the mud will directly adhere to the inner wall of the casing. During the subsequent concrete pouring construction, the mud retained on the inner wall of the casing will affect the coagulation quality of the concrete itself, and affect the bonding strength between the concrete and the surrounding side of the pile foundation hole, ultimately affecting the molding quality of the bridge pile foundation column. Summary of the invention

[0005] In order to loosen the settled and solidified mud inside the casing and clean the mud attached to the inner wall of the casing to ensure the molding quality of the bridge pile foundation column, the present application provides a deep-water bridge pile foundation construction auxiliary device and construction process.

[0006] The present application provides a deep-water bridge pile foundation construction auxiliary device and construction process using the following technical solutions:

[0007] In a first aspect, the present application provides a deep-water bridge pile foundation construction auxiliary device.

[0008] A deep-water bridge pile foundation construction auxiliary device, comprising:

[0009] A sliding limit ring, wherein a sliding gap is left between the outer peripheral side of the sliding limit ring and the inner side wall of the casing;

[0010] A fixing ring, wherein a plurality of fixing rods are connected between the fixing ring and the sliding stop ring, and the fixing rods are hollow and have openings at both ends;

[0011] A hollow mounting tube, wherein the mounting tube is coaxially rotatably connected to the fixing ring, and the inner cavity of the mounting tube is in communication with the inner cavity of the fixing rod;

[0012] A plurality of stirring rods, wherein the stirring rods are connected to the mounting tube, and the inner cavities of the stirring rods are communicated with the inner cavities of the mounting tube, and the stirring rods are provided with feeding holes;

[0013] A driving unit for driving the mounting tube to rotate, wherein the driving unit is connected to the sliding limit ring, and the driving unit is connected to the mounting tube.

[0014] By adopting the above technical scheme, after the steel casing sinks into place, the soil is taken out from the steel casing by using a rotary drilling rig, and the steel casing is followed up step by step. During the drilling process, the hole wall is maintained by using mud wall protection; after the position of the sliding limit ring is aligned with the underwater casing, the sliding limit ring is allowed to enter the casing; the driving unit provides power for the rotation of the installation pipe, and the installation pipe drives the stirring rod to stir the solidified mud to achieve the purpose of loosening while rotating. At the same time, the stirring rod rotates to push part of the slurry-water mixture into the fixed rod, and sprays out from one end of the fixed rod to impact the inner wall of the casing, so as to clean the mud attached to the inner wall of the casing; the steel cage is lowered into the casing by the lifting equipment; and the casing is provided with a guide tube. Concrete is poured at the bottom, and the casing is gradually raised as the concrete pouring proceeds until the bottom of the casing moves to the top of the pile foundation hole, and quick-setting concrete is poured to complete temporary blocking; the designed deep-water bridge pile foundation construction auxiliary device can realize movement guidance in the casing through a sliding limit ring, and the position of the installation pipe can be limited by a fixed ring and a fixed rod. The solidified mud can be stirred and loosened by the installation pipe and multiple stirring rods. The installation pipe can be driven by a driving unit, and the reaction force generated by the rotation is used to spray the slurry-water mixture from the outlet of the fixed rod to the inner wall of the casing, so as to complete the cleaning of the mud attached to the inner wall of the casing, so as to ensure the molding quality of the bridge pile foundation column.

[0015] In a specific possible implementation manner, a plurality of discharge holes are opened on the circumference of the mounting tube, and the mounting tube is rotated so that the discharge holes are connected with the openings at one end of the plurality of fixing rods in sequence.

[0016] By adopting the above technical solution, the designed discharge hole can realize sequential communication between the discharge hole and the fixing rod when the mounting pipe rotates.

[0017] In a specific possible implementation manner, a plurality of partition plates are connected to the installation tube, the partition plates are located in the inner cavity of the installation tube, and the plurality of partition plates surround a plurality of discharge areas connected to the discharge hole.

[0018] By adopting the above technical solution, the designed partition plate can limit the position of the slurry-water mixture in the installation pipe when the installation pipe rotates, thereby reducing the relative movement between the slurry-water mixture and the installation pipe, thereby reducing the possibility of insufficient discharge pressure of the slurry-water mixture.

[0019] In a specific implementation scheme, the sliding limit ring includes:

[0020] Two sliding rings, the two sliding rings are coaxially arranged, and a sliding groove is formed between the two sliding rings, and the fixing rod is connected to the sliding ring;

[0021] A plurality of connecting rods, both ends of which are respectively connected to the two sliding rings.

[0022] By adopting the above technical solution, a sliding limit ring is designed, which can realize the movement guidance of the whole device through the sliding ring, and can also scrape off the surface mud adhering to the inner wall of the casing. The two sliding rings can be connected through the connecting rod, and a sliding groove for the sliding of the fixed rod can be formed.

[0023] In a specific possible implementation manner, one end of the fixing rod extends into the sliding groove, and the fixing rod is slidably connected to the sliding ring.

[0024] By adopting the above technical solution, the sliding fixed rod is designed to achieve uniform and comprehensive cleaning of the inner wall of the casing by rotating in the same horizontal area.

[0025] In a specific possible implementation manner, a driving angle greater than zero is formed between the fixed rod and the axis of the discharge hole.

[0026] By adopting the above technical solution, a fixed rod is designed to form a driving angle greater than zero with the axis of the discharge hole, and the rotation of the fixed rod can be achieved by driving the slurry-water mixture.

[0027] In a specific possible implementation manner, the stirring rod is arranged in an arc shape, and the central axis of the mounting tube passes through the center of the stirring rod, both ends of the stirring rod are connected to the inner cavity of the mounting tube, and the feed hole is opened in the middle area of ​​the stirring rod.

[0028] By adopting the above technical solution, the arc-shaped stirring rod can realize the loosening of the solidified mud and increase the entry speed of the mud at the feed hole.

[0029] In a specific implementation scheme, the driving unit includes:

[0030] A mounting seat, the mounting seat is connected to the sliding limit ring, and a traction rope is connected to the mounting seat, and one end of the traction rope away from the mounting seat extends out from the top opening of the casing;

[0031] A driving motor is connected to the mounting seat, and a rotating shaft of the driving motor is coaxially connected to the mounting tube.

[0032] By adopting the above technical solution, a driving unit is designed, in which a driving motor can be installed through a mounting seat, and the mounting pipe can be driven to rotate through the driving motor. The overall descent speed of the auxiliary device can be controlled through the traction rope, thereby ensuring the mud loosening effect and the cleaning effect of the mud attached to the inner wall of the casing.

[0033] In a second aspect, the present application provides a deep-water bridge pile foundation construction process.

[0034] A deep-water bridge pile foundation construction process, comprising:

[0035] S1: Pile foundation hole construction, after the steel casing is sunk into place, the soil is taken from the steel casing using a rotary drilling rig, and the steel casing is followed up step by step. During the drilling process, mud wall protection is used to maintain the hole wall;

[0036] S2: The equipment is in place, and the sliding limit ring is aligned with the position of the underwater casing, so that the sliding limit ring enters the casing;

[0037] S3: Mud treatment. The drive unit provides power for the installation pipe to rotate. The installation pipe rotates and drives the stirring rod to stir the solidified mud to loosen it. At the same time, the stirring rod rotates to push part of the slurry-water mixture into the fixed rod, and sprays out from one end of the fixed rod to impact the inner wall of the casing, so as to clean the mud attached to the inner wall of the casing.

[0038] S4: lowering the steel cage into the casing by hoisting equipment;

[0039] S5: Concrete pouring: pour concrete into the bottom of the casing through the conduit, and gradually lift the casing as the concrete pouring progresses until the bottom of the casing moves to the top of the pile foundation hole, and then pour quick-setting concrete to complete temporary sealing.

[0040] By adopting the above technical scheme, after the steel casing is sunk into place, the soil is taken out from the steel casing by means of a rotary drilling rig, and the steel casing is followed up step by step. During the drilling process, the hole wall is maintained by means of mud wall protection; after the position of the sliding limit ring is aligned with the underwater casing, the sliding limit ring is allowed to enter the casing; the driving unit provides power for the rotation of the installation pipe, and the rotation of the installation pipe drives the stirring rod to stir the solidified mud to achieve the purpose of loosening. At the same time, the stirring rod rotates to push part of the slurry-water mixture into the fixed rod, and sprays out from one end of the fixed rod to impact the inner wall of the casing, so as to clean the mud attached to the inner wall of the casing; the steel cage is lowered into the casing by means of a lifting device; and the casing is provided with a guide tube to the casing. Concrete is poured at the bottom of the tube, and the casing is gradually raised as the concrete pouring proceeds until the bottom of the casing moves to the top of the pile foundation hole, and quick-setting concrete is poured to complete temporary blocking; the designed deep-water bridge pile foundation construction process can realize movement guidance in the casing through a sliding limit ring, and the position of the installation pipe can be limited by a fixed ring in combination with a fixed rod. The solidified mud can be stirred and loosened by the installation pipe and multiple stirring rods. The installation pipe can be driven by a driving unit, and the reaction force generated by the rotation is used to spray the slurry-water mixture from the outlet of the fixed rod to the inner wall of the casing, so as to complete the cleaning of the mud attached to the inner wall of the casing, so as to ensure the molding quality of the bridge pile foundation column.

[0041] In summary, the present application includes at least one of the following beneficial technical effects:

[0042] 1. The designed auxiliary device for deep-water bridge pile foundation construction can realize motion guidance in the casing through the sliding limit ring, the position limit of the installation pipe can be realized through the combination of the fixing ring and the fixing rod, the solidified mud can be stirred by the installation pipe and multiple stirring rods, and then the solidified mud can be loosened, the installation pipe can be driven by the driving unit, and the reaction force generated by the rotation is used to make the slurry-water mixture spray from the outlet of the fixing rod to the inner wall of the casing, so as to complete the cleaning of the mud attached to the inner wall of the casing, so as to ensure the molding quality of the bridge pile foundation column.

[0043] 2. The designed auxiliary device for deep-water bridge pile foundation construction can realize the movement guidance of the whole device through the sliding ring, and can also scrape off the surface mud adhering to the inner wall side of the casing. The two sliding rings can be connected through the connecting rod to form a sliding groove for the sliding of the fixed rod.

[0044] 3. The designed deep-water bridge pile foundation construction auxiliary device can install a driving motor through the mounting seat, and the driving motor can drive the mounting pipe to rotate. The overall descent speed of the auxiliary device can be controlled by the traction rope, thereby ensuring the mud loosening effect and the cleaning effect of the mud attached to the inner wall of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the connection structure of a sliding limit ring, a fixed ring and a fixed rod in the deep-water bridge pile foundation construction auxiliary device according to an embodiment of the present application.

[0046] Figure 2 is Figure 1 A schematic diagram of the three-dimensional structure after further adding the installation tube and the stirring rod.

[0047] Figure 3 yes Figure 2 A cross-sectional view along the middle parallel to the central axis of the mounting tube.

[0048] Figure 4 yes Figure 2 A cross-sectional view taken along a line perpendicular to the central axis of the mounting tube.

[0049] Figure 5 It is a structural schematic diagram of the deep-water bridge pile foundation construction auxiliary device according to an embodiment of the present application.

[0050] Figure 6 yes Figure 5 Schematic diagram of the usage status of the deep-water bridge pile foundation construction auxiliary device shown.

[0051] Explanation of the reference numerals: 01, casing; 1, sliding limit ring; 11, sliding ring; 12, connecting rod; 13, sliding groove; 2, fixing ring; 3, fixing rod; 4, mounting tube; 41, discharge hole; 5, stirring rod; 51, feed hole; 6, driving unit; 61, mounting seat; 62, traction rope; 63, driving motor; 7, partition plate. DETAILED DESCRIPTION

[0052] The following is combined with Figure 1-6 This application is described in further detail.

[0053] The embodiments of the present application disclose a deep-water bridge pile foundation construction auxiliary device and a construction process.

[0054] In a first aspect, an embodiment of the present application discloses a deep-water bridge pile foundation construction auxiliary device.

[0055] Reference Figure 1 A deep-water bridge pile foundation construction auxiliary device includes a sliding limit ring 1, a fixed ring 2 and a plurality of fixed rods 3. The central axis of the sliding limit ring 1 is vertically arranged, and a sliding gap is left between the outer peripheral side of the sliding limit ring 1 and the inner wall side of the casing 01, so that the sliding limit ring 1 can slide downward along the central axis of the casing 01. The fixed ring 2 is coaxially arranged with the sliding limit ring 1, and the outer diameter of the fixed ring 2 is smaller than the inner diameter of the sliding limit ring 1. A plurality of fixed rods 3 are distributed around the circumference of the fixed ring 2, and one end of the fixed rod 3 is connected to the fixed ring 2, and the other end is connected to the sliding limit ring 1. The fixed rod 3 is hollow, and both ends of the fixed rod 3 are open.

[0056] Reference Figure 1 Specifically, the sliding limit ring 1 includes a sliding ring 11 and a connecting rod 12. There are two sliding rings 11, which are coaxially arranged, and an annular sliding groove 13 is formed between the two sliding rings 11. The fixed rod 3 is connected to the sliding ring 11; there are multiple connecting rods 12, which are distributed in a circle, and the two ends of the connecting rod 12 are respectively welded and fixed to the two sliding rings 11; the sliding ring 11 can be used to guide the movement of the entire device, and the surface mud adhered to the inner wall side of the casing 01 can also be scraped off. The connecting rod 12 can be used to connect the two sliding rings 11, and a sliding groove 13 for sliding the fixed rod 3 is formed.

[0057] Reference Figure 2 The cam 4 is provided with a plurality of camshafts 5, the cam 4 being provided with a plurality of camshafts 5 and the cam 4 being provided with a plurality of camshafts 5. The cam 4 is ...

[0058] Reference Figure 2 and Figure 3 Specifically, the stirring rod 5 is arranged in an arc shape, the central axis of the mounting tube 4 passes through the center of the stirring rod 5, and both ends of the stirring rod 5 are connected to the inner cavity of the mounting tube 4, and the feed hole 51 is opened in the middle area of ​​the stirring rod 5, that is, the distance between the feed hole 51 and the central axis of the mounting tube 4 is the largest; by the stirring rod 5 arranged in an arc shape, the entry speed of the mud at the feed hole 51 can be increased while achieving the loosening treatment of the solidified mud.

[0059] Reference Figure 3 and Figure 4 Specifically, a plurality of discharge holes 41 are opened on the mounting tube 4, and the plurality of discharge holes 41 are evenly distributed around the circumference of the mounting tube 4, and the plurality of discharge holes 41 are in the same horizontal interval. The mounting tube 4 rotates so that the discharge holes 41 are connected with the openings at one end of the plurality of fixing rods 3 in sequence.

[0060] Reference Figure 4Furthermore, one end of the fixed rod 3 extends into the sliding groove 13, and the fixed rod 3 is slidingly connected to the sliding ring 11, and the fixed rod 3 and the connecting rod 12 are staggered to avoid interference between the fixed rod 3 and the connecting rod 12 when the fixed rod 3 rotates; and the driving angle between the fixed rod 3 and the axis of the discharge hole 41 is greater than zero. When the slurry-water mixture in the inner cavity of the mounting tube 4 enters the inner cavity of the fixed rod 3 through the discharge hole 41, due to the existence of the driving angle, the component force generated by the slurry-water mixture will push the fixed rod 3 to rotate.

[0061] Reference Figure 4 Furthermore, a plurality of partition plates 7 are welded and fixed on the mounting tube 4, the partition plates 7 are located in the inner cavity of the mounting tube 4, and the partition plates 7 are vertically arranged, and the plurality of partition plates 7 enclose a plurality of discharge areas, each of which is respectively connected to a different discharge hole 41. When the mounting tube 4 rotates, the position of the slurry-water mixture in the mounting tube 4 can be limited, thereby reducing the possibility of relative movement between the slurry-water mixture and the mounting tube 4, thereby causing insufficient discharge pressure of the slurry-water mixture.

[0062] Reference Figure 5 and Figure 6 Specifically, in order to realize the rotation drive of the installation tube 4, the deep-water bridge pile foundation construction auxiliary device also includes a driving unit 6, which is connected to the sliding ring 11, and the driving unit 6 is connected to the installation tube 4. Specifically, the driving unit 6 includes a mounting seat 61, a traction rope 62 and a driving motor 63. The mounting seat 61 is located above the sliding ring 11, and the mounting seat 61 and the sliding ring 11 are fixed by multiple support rods. One end of the traction rope 62 is connected to the mounting seat 61, and the other end extends upward from the top opening of the casing 01; the driving motor 63 is bolted to the mounting seat 61, and the rotating shaft of the driving motor 63 is coaxially connected to the installation tube 4 through a coupling; the driving motor 63 can be installed through the mounting seat 61, and the installation tube 4 can be driven to rotate through the driving motor 63. The overall descending speed of the auxiliary device can be controlled by the traction rope 62, thereby ensuring the mud loosening effect and the cleaning effect of the mud attached to the inner wall of the casing 01.

[0063] The implementation principle of the deep-water bridge pile foundation construction auxiliary device of the embodiment of the present application is as follows: after the steel casing 01 sinks into place, soil is taken from the steel casing 01 by using a rotary drilling rig, and the steel casing 01 is followed up step by step. During the drilling process, mud wall protection is adopted to maintain the hole wall; after the position of the sliding limit ring 1 is aligned with the underwater casing 01, the sliding limit ring 1 enters the casing 01; the driving unit 6 provides power for the rotation of the installation pipe 4, and the installation pipe 4 drives the stirring rod 5 to stir the solidified mud while rotating to achieve the purpose of loosening. At the same time, the stirring rod 5 rotates to push part of the slurry-water mixture into the fixed rod 3, and sprays out from one end of the fixed rod 3 to impact the inner wall of the casing 01, so as to clean the mud attached to the inner wall of the casing 01; the steel casing 01 is lifted by the lifting equipment The reinforcement cage is lowered into the casing 01; concrete is poured into the bottom of the casing 01 through the guide tube, and the casing 01 is gradually raised as the concrete pouring proceeds until the bottom of the casing 01 moves to the top of the pile foundation hole, and quick-setting concrete is poured to complete temporary blocking; the movement guidance can be achieved in the casing 01 through the sliding limit ring 1, the position restriction of the installation pipe 4 can be achieved through the cooperation of the fixing ring 2 and the fixing rod 3, the solidified mud can be stirred by the installation pipe 4 and a plurality of stirring rods 5, and then the solidified mud can be loosened, the installation pipe 4 can be driven by the driving unit 6, and the reaction force generated by the rotation is used to make the slurry-water mixture spray from the outlet of the fixing rod 3 to the inner wall of the casing 01, so as to complete the cleaning of the mud attached to the inner wall of the casing 01, so as to ensure the molding quality of the bridge pile foundation column.

[0064] In a second aspect, an embodiment of the present application discloses a deep-water bridge pile foundation construction process.

[0065] Reference Figures 1 to 6 A deep-water bridge pile foundation construction process is implemented by using the deep-water bridge pile foundation construction auxiliary device disclosed in the first aspect of the embodiment of the present application, comprising:

[0066] S1: Pile foundation hole construction, after the steel casing 01 is sunk into place, the soil is taken from the steel casing 01 by using a rotary drilling rig, and the steel casing 01 is followed up step by step. During the drilling process, mud wall protection is used to maintain the hole wall;

[0067] S2: The equipment is in place, and the sliding limit ring 1 is aligned with the position of the underwater casing 01, so that the sliding limit ring 1 enters the casing 01;

[0068] S3: Mud treatment, the driving unit 6 provides power for the installation pipe 4 to rotate, and the installation pipe 4 rotates while driving the stirring rod 5 to stir the solidified mud to achieve the purpose of loosening. At the same time, the stirring rod 5 rotates to push part of the slurry-water mixture into the fixing rod 3, and sprays out from one end of the fixing rod 3 to impact the inner wall of the casing 01, so as to clean the mud attached to the inner wall of the casing 01;

[0069] S4: lowering the steel cage into casing 01 by hoisting equipment;

[0070] S5: Concrete pouring: pour concrete into the bottom of casing 01 through the conduit, and gradually lift casing 01 as the concrete pouring progresses until the bottom of casing 01 moves to the top of the pile foundation hole, and pour quick-setting concrete to complete temporary blocking.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A deep-water bridge pile foundation construction auxiliary device, characterized in that: include: A sliding limit ring (1), wherein a sliding gap is left between the outer peripheral side of the sliding limit ring (1) and the inner side wall of the casing (01); A fixing ring (2), wherein a plurality of fixing rods (3) are connected between the fixing ring (2) and the sliding stop ring (1), and the fixing rods (3) are hollow and have openings at both ends; a hollow mounting tube (4), the mounting tube (4) being coaxially rotatably connected to the fixing ring (2), and the inner cavity of the mounting tube (4) being in communication with the inner cavity of the fixing rod (3); A plurality of stirring rods (5), wherein the stirring rods (5) are connected to the mounting tube (4), and the inner cavities of the stirring rods (5) are in communication with the inner cavities of the mounting tube (4), and the stirring rods (5) are provided with material inlet holes (51); A driving unit (6) for driving the mounting tube (4) to rotate, wherein the driving unit (6) is connected to the sliding limit ring (1), and the driving unit (6) is connected to the mounting tube (4).

2. The deep-water bridge pile foundation construction auxiliary device according to claim 1 is characterized by: A plurality of discharge holes (41) are provided on the circumference of the mounting tube (4), and the mounting tube (4) is rotated so that the discharge holes (41) are connected in sequence with the openings at one end of the plurality of fixing rods (3).

3. The deep-water bridge pile foundation construction auxiliary device according to claim 2 is characterized by: A plurality of partition plates (7) are connected to the mounting tube (4), the partition plates (7) are located in the inner cavity of the mounting tube (4), and the plurality of partition plates (7) form a plurality of discharge areas connected to the discharge hole (41).

4. The deep-water bridge pile foundation construction auxiliary device according to claim 2 is characterized by: The sliding limiting ring (1) comprises: Two sliding rings (11), the two sliding rings (11) are coaxially arranged, and a sliding groove (13) is formed between the two sliding rings (11), and the fixing rod (3) is connected to the sliding rings (11); A plurality of connecting rods (12), wherein two ends of the connecting rods (12) are respectively connected to the two sliding rings (11).

5. The deep-water bridge pile foundation construction auxiliary device according to claim 4 is characterized by: One end of the fixing rod (3) extends into the sliding groove (13), and the fixing rod (3) is slidably connected to the sliding ring (11).

6. The deep-water bridge pile foundation construction auxiliary device according to claim 5 is characterized by: A driving angle greater than zero is formed between the fixing rod (3) and the axis of the discharge hole (41).

7. The deepwater bridge pile foundation construction auxiliary device according to any one of claims 1 to 6, characterized in that: The stirring rod (5) is arranged in an arc shape, and the central axis of the mounting tube (4) passes through the center of the stirring rod (5). Both ends of the stirring rod (5) are connected to the inner cavity of the mounting tube (4), and the feed hole (51) is opened in the middle area of ​​the stirring rod (5).

8. The deep-water bridge pile foundation construction auxiliary device according to claim 1 is characterized by: The driving unit (6) comprises: A mounting seat (61), the mounting seat (61) being connected to the sliding stop ring (1), and a traction rope (62) being connected to the mounting seat (61), and one end of the traction rope (62) away from the mounting seat (61) extending out from the top opening of the casing (01); A driving motor (63), wherein the driving motor (63) is connected to the mounting seat (61), and a rotating shaft of the driving motor (63) is coaxially connected to the mounting tube (4).

9. A deep-water bridge pile foundation construction process, characterized by: The deep-water bridge pile foundation construction auxiliary device is implemented by using any one of claims 1 to 8, comprising: S1: Construction of pile foundation hole. After the steel casing (01) is sunk into place, soil is taken from the steel casing (01) using a rotary drilling rig, and the steel casing (01) is followed up step by step. During the drilling process, mud wall protection is used to maintain the hole wall; S2: The equipment is in place, and the position of the sliding limit ring (1) is aligned with the underwater casing (01), so that the sliding limit ring (1) enters the casing (01); S3: Mud treatment, the driving unit (6) provides power for the installation pipe (4) to rotate, and the installation pipe (4) drives the stirring rod (5) to stir the solidified mud to loosen it. At the same time, the stirring rod (5) rotates to push part of the slurry-water mixture into the fixing rod (3), and sprays out from one end of the fixing rod (3) to impact the inner wall of the casing (01), thereby cleaning the mud attached to the inner wall of the casing (01); S4: lowering the steel cage, the steel cage is lowered into the casing (01) by means of a lifting device; S5: Concrete pouring: pouring concrete into the bottom of the casing (01) through the guide tube, and gradually lifting the casing (01) as the concrete pouring proceeds, until the bottom of the casing (01) moves to the top of the pile foundation hole, and pouring quick-setting concrete to complete temporary blocking.

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