Deep water area large inclination bare rock bridge pile foundation construction method

Abstract

This invention relates to a construction method for bridge pile foundations in deep-water areas with steeply inclined bare rock, belonging to the field of bridge pile foundation construction technology. By decomposing the bridge pile foundation into several bridge pile blocks and stacking them sequentially from bottom to top, the reduced force-bearing area of ​​each pile block during installation reduces the number of times the pile blocks are impacted by sea currents. Furthermore, the lighter weight of each pile block compared to the entire bridge pile foundation increases the speed and efficiency of pile installation. In addition, this method incorporates auxiliary supports. These supports stabilize the pile blocks when they are placed in the designated position, as they are not yet securely fixed, further enhancing the speed and efficiency of pile installation.

Description

Technical Field

[0001] This invention belongs to the field of bridge pile foundation construction technology, specifically relating to a method for constructing bridge pile foundations in deep-water areas with steeply inclined bare rock. Background Technology

[0002] With the development of economic construction, deep-water bridge engineering has indeed shown a growing trend. Bridge pile foundations, as the core foundation type in bridge engineering, are undeniably important and widely used. Deep-water bridge projects typically face complex geological and hydrological conditions, placing extremely high demands on the design, construction, and maintenance of bridge pile foundations. The main function of bridge pile foundations is to transfer the weight and load of the bridge to deep, stable strata, ensuring the stability and safety of the bridge.

[0003] For example, the utility model patent with patent authorization announcement number CN217601425U discloses a support structure for a bridge pile foundation that crosses a steeply dipping bedding plane, including: a bridge pile foundation; multiple support piles, which are vertically arranged on one side of the bridge pile foundation, and the support piles are located at a steeply dipping bedding plane that may collapse, and the multiple support piles are arranged in a double-layer arc shape.

[0004] Based on the search of the aforementioned patent grant announcement numbers, and considering their shortcomings, the following was found:

[0005] For bare rock areas with large inclination angles in deep water, it is difficult to install bridge pile foundations on these areas due to their large inclination angles. In addition, there are many undersea currents in deep water areas. During the installation of bridge pile foundations on bare rock areas, the undersea currents will continuously act on the bridge pile foundations, causing them to sway constantly, which in turn reduces the speed and efficiency of bridge pile foundation installation. Summary of the Invention

[0006] To address the challenges of installing bridge pile foundations in steeply inclined bare rock areas in deep water, where the large inclination makes installation difficult, and further compounded by the presence of strong undersea currents that cause continuous shaking and reduced installation speed and efficiency, this invention provides a construction method for bridge pile foundations in steeply inclined bare rock areas in deep water.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A construction method for bridge pile foundations in deep-water areas with steeply inclined bare rock. The construction method relies on the bridge pile foundation structure, which includes several bridge pile blocks and several auxiliary supports. The bridge pile blocks are stacked sequentially from bottom to top, and the auxiliary supports are matched one-to-one with the bridge pile blocks. The auxiliary supports are set on the corresponding bridge pile blocks.

[0009] Includes the following steps:

[0010] S1: An installation plate is installed at a specified height of bare rock in the deep water area;

[0011] S2: Install the bridge pile block onto the mounting plate;

[0012] S3: After the bridge pile block is installed, the auxiliary support is released from its restrictive relationship with the bridge pile block. The auxiliary support can extend and retract, and the auxiliary support is in contact with the bare rock by extending.

[0013] S4: Another bridge pile block is stacked on top of the already installed bridge pile block, and the corresponding auxiliary support is controlled to fit against the bare rock.

[0014] S5: Repeat steps S2-S4 above until all bridge piles are stacked sequentially to form the bridge pile foundation.

[0015] As a preferred embodiment of the present invention, the auxiliary support includes a plurality of hollow telescopic rods, a hollow hinged cylinder, and a telescopic spring. The hinged cylinder is disposed on the bridge pile block, and the plurality of telescopic rods are sequentially and coaxially slidably disposed inside the hinged cylinder. The two ends of the telescopic spring are respectively connected to the hinged cylinder and the telescopic rod closest to the bare rock.

[0016] In a preferred embodiment of the present invention, each telescopic rod is provided with a sliding groove, which is interconnected with the interior of the telescopic rod. The inner diameter of the telescopic rod is larger than the inner diameter of its sliding groove. From the direction closer to the bare rock to the direction farther away from the bare rock, the inner diameter of the sliding groove of the telescopic rod gradually increases, and the outer diameter of the telescopic rod closer to the bare rock is equal to the inner diameter of the sliding groove of its adjacent telescopic rod farther away from the bare rock. The hinge cylinder is coaxially provided with a sliding groove, and the telescopic rod farthest from the bare rock is coaxially slidably disposed in the hinge cylinder, and the outer diameter of the telescopic rod farthest from the bare rock is equal to the inner diameter of the sliding groove.

[0017] As a preferred embodiment of the present invention, the auxiliary support further includes several limiting blocks, which correspond one-to-one with several telescopic rods. Each limiting block is coaxially disposed at the bottom of the corresponding telescopic rod. The inner diameter of the limiting block is the same as that of the telescopic rod where it slides. The outer diameter of the limiting block furthest from the bare rock is equal to the inner diameter of the hinged cylinder.

[0018] As a preferred embodiment of the present invention, the auxiliary support further includes several abutment units, each abutment unit corresponding to a number of telescopic rods, with each abutment unit disposed on a corresponding telescopic rod. Each abutment unit includes several abutment blocks and several abutment springs. The telescopic rod has several abutment grooves, which are evenly spaced along the axial direction of the telescopic rod on its outer side wall. Each abutment groove and each abutment spring corresponds to a number of abutment blocks. Each abutment block is slidably disposed on a corresponding abutment groove, and each abutment spring is disposed in a corresponding abutment groove. The two ends of each abutment spring are respectively connected to the abutment groove and the abutment block. The abutment block can lock or release its contact with the end face of the telescopic rod.

[0019] As a preferred embodiment of the present invention, the bridge pile foundation structure further includes a limiting unit, which includes a limiting rod, a rotating rod, a pushing rod, and a pushing spring. A movable groove is formed inside the bridge pile block, one end of which communicates with the outside. The middle end of the rotating rod is hinged to the interior of the bridge pile block. The limiting rod is horizontally slidably disposed within the movable groove, and one end of the limiting rod is slidably hinged to one end of the rotating rod along its central axis. The pushing rod is horizontally slidably disposed within the movable groove. Both ends of the pushing spring are respectively connected to the pushing rod and the interior of the bridge pile block. The pushing rod can lock or release its abutting relationship with the other end of the rotating rod, and the limiting rod can lock or release its contact relationship with the end face of the hinged cylinder.

[0020] As a preferred embodiment of the present invention, the bridge pile foundation structure further includes a positioning block, which is coaxially disposed on the top of the bridge pile block, and an installation groove is coaxially provided on the bottom of the bridge pile block. Viewed from bottom to top, the positioning block on the bottom of the bridge pile block is configured to cooperate with the installation groove on the top of the bridge pile block.

[0021] As a preferred embodiment of the present invention, the limiting unit further includes a limiting plate, a limiting spring, and a sliding block. The limiting plate is vertically slidably disposed within the movable groove. The limiting spring is disposed within the movable groove, with both ends of the limiting spring connected to the limiting plate and the bridge pile block, respectively. The limiting plate is located between the rotating rod and the pushing rod. The rotating rod is vertically disposed before it abuts against the pushing rod. The sliding block is vertically slidably disposed within the movable groove, with one end connected to the limiting plate and the other end extending and retracting within the mounting groove. The limiting plate can lock or release its contact relationship with the rotating rod and the pushing rod, respectively.

[0022] As a preferred embodiment of the present invention, the bottom of the hinge cylinder is coaxially provided with a through hole, and the through hole is in communication with the interior of the hinge cylinder.

[0023] As a preferred embodiment of the present invention, the bridge pile block is further provided with a water pressure groove, which is connected to the external environment and the movable groove respectively, and the push rod is slidably and sealed in the water pressure groove.

[0024] The beneficial effects of this invention are as follows:

[0025] This scheme decomposes the bridge pile foundation into several bridge pile blocks, which are stacked sequentially from bottom to top. This reduces the stress-bearing area of ​​the bridge pile blocks during installation, thus minimizing the impact of underwater currents. Furthermore, the lighter weight of each block compared to a single bridge pile increases the speed and efficiency of installation. Additionally, the scheme includes auxiliary supports. These supports stabilize the bridge pile blocks when they are placed in their designated positions, as they are not yet securely fixed. Securely fixing the bridge pile blocks also increases the speed and efficiency of the construction workers in installing them. This solves the problem of installing bridge pile foundations in deep-water areas with large inclination angles of bare rock, where the steep inclination angle makes installation difficult. Furthermore, the presence of strong undersea currents in deep water areas causes the bridge pile foundations to sway continuously during installation in bare rock areas, further reducing the speed and efficiency of installation. Once the bridge pile blocks are secured, the auxiliary supports increase the stability of the installation, preventing violent shaking caused by the impact of undersea currents. Attached Figure Description

[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is an overall diagram of a bridge pile foundation structure based on steeply inclined bare rock in deep water, according to the present invention.

[0028] Figure 2 This is a cross-sectional view of a hinged tube based on a deep-water, steeply inclined bare rock bridge pile foundation structure according to the present invention.

[0029] Figure 3 This is a schematic diagram of a limiting unit structure for a bridge pile foundation structure with a large inclination angle in deep water, according to the present invention.

[0030] Explanation of main symbols

[0031] In the diagram: 1. Bridge pile block; 2. Telescopic rod; 3. Hinge cylinder; 4. Telescopic spring; 5. Restriction block; 6. Abutment unit; 601. Abutment block; 602. Abutment spring; 7. Limiting unit; 701. Restriction rod; 702. Rotating rod; 703. Push rod; 704. Push spring; 705. Restriction plate; 706. Restriction spring; 707. Sliding block; 8. Positioning block. Detailed Implementation

[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0033] Please see Figures 1-3 This embodiment provides a construction method for bridge pile foundations based on steeply inclined bare rock in deep water areas. The construction method relies on the bridge pile foundation structure, which includes several bridge pile blocks 1 and several auxiliary supports. The several bridge pile blocks 1 are stacked sequentially from bottom to top, and the several auxiliary supports are matched one-to-one with the several bridge pile blocks 1. The auxiliary supports are set on the corresponding bridge pile blocks 1.

[0034] Includes the following steps:

[0035] S1: An installation plate is installed at a designated height of bare rock in the deep water area to provide a support platform for the subsequent installation of bridge pile 1;

[0036] S2: Install bridge pile block 1 onto the mounting plate;

[0037] S3: After the bridge pile block 1 is installed, the auxiliary support is released from its restrictive relationship with the bridge pile block 1. The auxiliary support can extend and retract, and the auxiliary support is in contact with the bare rock by extending. The function of the auxiliary support is to strengthen the installation strength of the bridge pile block 1 and improve the stability of the bridge pile block 1.

[0038] S4: Another bridge pile 1 is stacked on top of the already installed bridge pile 1, and the corresponding auxiliary support is controlled to fit against the bare rock.

[0039] S5: Repeat steps S2-S4 above until all bridge pile blocks 1 are stacked sequentially to form a bridge pile foundation.

[0040] This scheme decomposes the bridge pile foundation into several bridge pile blocks 1, which are stacked sequentially from bottom to top. This reduces the stress-bearing area of ​​each bridge pile block 1 during installation, thus minimizing the impact of underwater currents. Furthermore, the lighter weight of each block compared to the entire bridge pile foundation increases the speed and efficiency of installation. Additionally, this scheme includes auxiliary supports. These supports stabilize the bridge pile blocks 1 when they are placed in their designated positions, facilitating construction. Once the bridge pile 1 is secured, the speed and efficiency of its installation are increased. This solves the problem of installing bridge piles in deep-water areas with steep inclinations, where it is difficult to install them. Furthermore, the presence of strong undersea currents in deep water causes the piles to sway during installation, further reducing installation speed and efficiency. Once the bridge pile 1 is secured, the auxiliary support increases its stability, preventing severe shaking due to undersea currents.

[0041] Specifically, the auxiliary support of this scheme includes several hollow telescopic rods 2, hollow hinged cylinders 3, and telescopic springs 4. The hinged cylinders 3 are set on the bridge pile block 1, and the several telescopic rods 2 are slidably and coaxially arranged in the hinged cylinders 3 in sequence. The two ends of the telescopic springs 4 are connected to the hinged cylinders 3 and the telescopic rod 2 closest to the bare rock, respectively. In this scheme, by setting several telescopic rods 2, after the bridge pile block 1 is installed, the several telescopic rods 2 extend out from the hinged cylinders 3 in sequence until the telescopic rods 2 are in close contact with the bare rock.

[0042] Furthermore, each telescopic rod 2 in this design is provided with a sliding groove, which is interconnected with the interior of the telescopic rod 2. The inner diameter of the telescopic rod 2 is larger than the inner diameter of its sliding groove. From the direction closest to the bare rock to the direction furthest from the bare rock, the inner diameter of the sliding groove of the telescopic rod 2 gradually increases, and the outer diameter of the telescopic rod 2 closest to the bare rock is equal to the inner diameter of the sliding groove of its adjacent telescopic rod 2 furthest from the bare rock. The hinge cylinder 3 is coaxially provided with a sliding groove, and the telescopic rod 2 furthest from the bare rock is coaxially slidably disposed in the hinge cylinder 3, and the outer diameter of the telescopic rod 2 furthest from the bare rock is equal to the inner diameter of the sliding groove. Through this arrangement, several telescopic rods 2 slide out in stages, ensuring that the auxiliary support of this design can extend stably and in stages when it extends.

[0043] In addition, the auxiliary support of this scheme also includes several limiting blocks 5, which correspond one-to-one with several telescopic rods 2. Each limiting block 5 is coaxially set at the bottom of the corresponding telescopic rod 2. The inner diameter of the limiting block 5 is the same as that of the telescopic rod 2 where it slides. The outer diameter of the limiting block 5 furthest from the bare rock is equal to the inner diameter of the hinged cylinder 3. By setting the limiting blocks 5, the limiting blocks 5 can only slide inside the corresponding telescopic rod 2 and cannot slide outside the corresponding telescopic rod 2. This setting ensures that the auxiliary support can move normally in telescopic movement.

[0044] According to the above embodiment, after the auxiliary support is fitted to the bare rock, in order to prevent the auxiliary support from shrinking again due to other factors, i.e., to release its fit with the bare rock, the auxiliary support in this solution also includes several abutment units 6, which correspond one-to-one with several telescopic rods 2. Each abutment unit 6 is set on the corresponding telescopic rod 2. The abutment unit 6 includes several abutment blocks 601 and several abutment springs 602. The telescopic rod 2 has several abutment grooves, which are evenly spaced along the axial direction of the telescopic rod 2 on the outer side wall of the telescopic rod 2. Each abutment groove and each abutment spring 602 corresponds one-to-one with several abutment blocks 601. Each abutment block 601 is slidably set on the corresponding abutment groove. Above, any abutting spring 602 is disposed in the corresponding abutting groove. The two ends of the abutting spring 602 are respectively connected to the abutting groove and the abutting block 601. The abutting block 601 can lock or release its contact with the end face of the telescopic rod 2. With this arrangement, when the front telescopic rod 2 is still retracted into the rear telescopic rod 2, the abutting block 601 located in the front telescopic rod 2 retracts into the corresponding abutting groove. When the front telescopic rod 2 extends out from the rear telescopic rod 2, the abutting block 601 located in the front telescopic rod 2 extends out from the corresponding abutting groove. Since the end face of the abutting block 601 is in contact with the end face of the rear telescopic rod 2, it will restrict the front telescopic rod 2 from retracting into the rear telescopic rod 2 again.

[0045] It is also worth noting that the bridge pile foundation structure of this scheme also includes a limiting unit 7. The limiting unit 7 includes a limiting rod 701, a rotating rod 702, a pushing rod 703, and a pushing spring 704. A movable groove is opened in the bridge pile block 1, one end of which is connected to the outside. The middle end of the rotating rod 702 is hinged to the inside of the bridge pile block 1. The limiting rod 701 is horizontally slidably set in the movable groove. One end of the limiting rod 701 is slidably hinged to one end of the rotating rod 702 along the central axis of the rotating rod 702. The pushing rod 703 is horizontally slidably set in the movable groove. The two ends of the pushing spring 704 are respectively connected to the pushing rod 703. The push rod 703 is connected to the bridge pile block 1. The push rod 703 can lock or release its abutting relationship with the other end of the rotating rod 702. The limiting rod 701 can lock or release its contact relationship with the end face of the hinge cylinder 3. It should be noted that when the push rod 703 abuts with the other end of the rotating rod 702, the rotating rod 702 will rotate. The limiting rod 701, which is hinged to one end of the rotating rod 702, begins to retract into the bridge pile block 1. After the end of the limiting rod 701 that extends out of the bridge pile block 1 releases its contact relationship with the end face of the hinge cylinder 3, the telescopic rod 2 set in the hinge cylinder 3 begins to extend until the telescopic rod 2 is in contact with the bare rock.

[0046] In addition, in order to ensure that several bridge pile blocks 1 can be stacked on each other, the bridge pile foundation structure of this scheme also includes a positioning block 8. The positioning block 8 is coaxially set on the top of the bridge pile block 1, and the bottom of the bridge pile block 1 is coaxially provided with an installation groove. From bottom to top, the positioning block 8 on the bottom bridge pile block 1 is matched with the installation groove of the top bridge pile block 1.

[0047] According to the above embodiment, in order to ensure that the auxiliary support set on the bridge pile 1 will only begin to extend and retract after the bridge pile 1 is placed on the completed bridge pile 1, the limiting unit 7 of this solution also includes a limiting plate 705, a limiting spring 706, and a sliding block 707. The limiting plate 705 is vertically slidably set in the movable groove, the limiting spring 706 is set in the movable groove, and both ends of the limiting spring 706 are respectively connected to the limiting plate 705 and the bridge pile 1. The limiting plate 705 is located between the rotating rod 702 and the pushing rod 703. The rotating rod 702 is vertically set before it abuts against the pushing rod 703. The sliding block 707 is vertically slidably set in the movable groove. One end of the sliding block 707 is connected to the limiting plate 705, and the other end is extended and retracted in the mounting groove. The limiting plate 705 can be locked or unlocked. In addition to their respective contact relationships with the rotating rod 702 and the pushing rod 703, through this arrangement, when the bridge pile block 1 is placed on the completed bridge pile block 1, the mounting groove of the bridge pile block 1 cooperates with the positioning block 8 on the completed bridge pile block 1. During the cooperation between the positioning block 8 and the mounting groove, the positioning block 8 will press the sliding block 707, causing the sliding block 707 to retract into the movable groove, thereby driving the limiting plate 705 connected to the sliding block 707 to move towards the top of the movable groove, so that the limiting plate 705 releases its contact relationship with the rotating rod 702 and the pushing rod 703. Under the action of the pushing spring 704, the pushing rod 703 achieves a contact relationship with the rotating rod 702, and the rotating rod 702 also begins to rotate, so that the limiting rod 701 moves in the direction of the bridge pile block 1.

[0048] Furthermore, to ensure that the telescopic rod 2 inside the hinge cylinder 3 can extend after the limiting rod 701 is released from its contact with the end face of the hinge cylinder 3, a through hole is coaxially opened at the bottom of the hinge cylinder 3, and the through hole communicates with the interior of the hinge cylinder 3. This arrangement allows the telescopic rod 2 inside the hinge cylinder 3 to move outward from the hinge cylinder 3 due to the water pressure of the deep-water seawater after the limiting rod 701 is released from its contact with the end face of the hinge cylinder 3. This avoids the situation where the telescopic spring 4 cannot drive the telescopic rod 2 to extend due to the friction between the limiting block 5 at the bottom of the front telescopic rod 2 and the abutment block 601 on the side wall of the telescopic rod 2 and the inner wall of the rear telescopic rod 2.

[0049] Furthermore, since the interior of the hinged cylinder 3 is connected to seawater, the friction between the telescopic rod 2 and the limiting rod 701 will inevitably increase when the telescopic rod 2 is not extended. To ensure that the pushing rod 703 can smoothly push the rotating rod 702, allowing the limiting rod 701 to move smoothly and releasing the restrictive fit between it and the telescopic rod 2, a water pressure groove is also provided in the bridge pile block 1 of this scheme. The water pressure groove is connected to the external environment and the movable groove, respectively. The pushing rod 703 is slidably and sealed in the water pressure groove. In addition, the mutual sealing fit between the pushing rod 703 and the water pressure groove prevents seawater from entering the movable groove.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A construction method for bridge pile foundations in deep-water areas with steeply inclined bare rock, the method relying on a bridge pile foundation structure, the bridge pile foundation structure comprising a plurality of bridge pile blocks and a plurality of auxiliary supports, the plurality of bridge pile blocks being stacked sequentially from bottom to top, and the plurality of auxiliary supports corresponding one-to-one with the plurality of bridge pile blocks, the auxiliary supports being set on the corresponding bridge pile blocks; characterized in that, Includes the following steps: S1: An installation plate is installed at a specified height of bare rock in the deep water area; S2: Install the bridge pile block onto the mounting plate; S3: After the bridge pile block is installed, the auxiliary support is released from its restrictive relationship with the bridge pile block, and the auxiliary support can extend and retract, and the auxiliary support is in contact with the bare rock by extending; S4: Another bridge pile block is stacked on top of the already installed bridge pile block, and the corresponding auxiliary support is controlled to fit against the bare rock. S5: Repeat steps S2-S4 above until all bridge piles are stacked sequentially to form a bridge pile foundation; The auxiliary support includes several hollow telescopic rods, a hollow hinged cylinder, and a telescopic spring. The hinged cylinder is installed on the bridge pile block, and the several telescopic rods are sequentially and coaxially slidably installed inside the hinged cylinder. The two ends of the telescopic spring are respectively connected to the hinged cylinder and the telescopic rod closest to the bare rock. The bridge pile foundation structure also includes a limiting unit, which includes a limiting rod, a rotating rod, a pushing rod, and a pushing spring. A movable groove is formed inside the bridge pile block, one end of which communicates with the outside. The middle end of the rotating rod is hinged to the interior of the bridge pile block. The limiting rod is horizontally slidably disposed within the movable groove, and one end of the limiting rod is slidably hinged to one end of the rotating rod along its central axis. The pushing rod is horizontally slidably disposed within the movable groove. Both ends of the pushing spring are connected to the pushing rod and the interior of the bridge pile block, respectively. The pushing rod can lock or release its abutment with the other end of the rotating rod, and the limiting rod can lock or release its contact with the end face of the hinged cylinder. The bottom of the bridge pile block is coaxially provided with an installation groove; The limiting unit further includes a limiting plate, a limiting spring, and a sliding block. The limiting plate is vertically slidably disposed within the movable groove. The limiting spring is disposed within the movable groove, with its two ends connected to the limiting plate and the bridge pile block, respectively. The limiting plate is located between the rotating rod and the pushing rod. The rotating rod is vertically disposed before it abuts against the pushing rod. The sliding block is vertically slidably disposed within the movable groove, with one end connected to the limiting plate and its other end extending and retracting within the mounting groove. The limiting plate can lock or release its contact relationship with the rotating rod and the pushing rod, respectively.

2. The method for constructing bridge pile foundations in deep-water areas with steeply inclined bare rock, as described in claim 1, is characterized in that: Each telescopic rod is provided with a sliding groove, which is connected to the interior of the telescopic rod. The inner diameter of the telescopic rod is larger than the inner diameter of its sliding groove. The inner diameter of the sliding groove of the telescopic rod gradually increases from the direction closer to the bare rock to the direction farther away from the bare rock. The outer diameter of the telescopic rod closer to the bare rock is equal to the inner diameter of the sliding groove of its adjacent telescopic rod farther away from the bare rock. The hinge cylinder is coaxially provided with a sliding groove. The telescopic rod farthest from the bare rock is coaxially slidably disposed in the hinge cylinder, and the outer diameter of the telescopic rod farthest from the bare rock is equal to the inner diameter of the sliding groove.

3. The method for constructing bridge pile foundations in deep-water areas with steeply inclined bare rock, as described in claim 2, is characterized in that: The auxiliary support also includes several limiting blocks, which correspond one-to-one with several telescopic rods. Each limiting block is coaxially disposed at the bottom of the corresponding telescopic rod. The inner diameter of the limiting block is the same as that of the telescopic rod it is in when sliding. The outer diameter of the limiting block furthest from the bare rock is equal to the inner diameter of the hinged cylinder.

4. The method for constructing bridge pile foundations in deep-water areas with steeply inclined bare rock, as described in claim 1, is characterized in that: The auxiliary support also includes several abutment units, each corresponding to a number of telescopic rods. Each abutment unit is mounted on a corresponding telescopic rod. Each abutment unit includes several abutment blocks and several abutment springs. The telescopic rod has several abutment grooves, which are evenly spaced along the axial direction of the telescopic rod on its outer side wall. Each abutment groove and abutment spring corresponds to a number of abutment blocks. Each abutment block is slidably mounted on a corresponding abutment groove, and each abutment spring is mounted in a corresponding abutment groove. The two ends of each abutment spring are connected to the abutment groove and the abutment block, respectively. The abutment block can lock or release its contact with the end face of the telescopic rod.

5. The method for constructing bridge pile foundations in deep-water areas with steeply inclined bare rock, as described in claim 1, is characterized in that: The bridge pile foundation structure also includes a positioning block, which is coaxially disposed on the top of the bridge pile block. Viewed from bottom to top, the positioning block on the bottom bridge pile block is configured to cooperate with the mounting groove on the top bridge pile block.

6. The method for constructing bridge pile foundations in deep-water areas with steeply inclined bare rock, as described in claim 1, is characterized in that: The bottom of the hinge cylinder has a through hole coaxially connected to the interior of the hinge cylinder.

7. The method for constructing bridge pile foundations in deep-water areas with steeply inclined bare rock, as described in claim 1, is characterized in that: The bridge pile block is also provided with a water pressure groove, which is connected to the external environment and the movable groove respectively. The push rod is slidably and sealed in the water pressure groove.

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