Large-dip-angle bare rock bridge pile foundation construction method based on deepwater area

Abstract

The invention relates to a large-dip-angle bare rock bridge pile foundation construction method based on a deepwater area, and belongs to the technical field of bridge pile foundation construction.A bridge pile foundation is decomposed into a plurality of bridge pile blocks which are sequentially stacked from bottom to top, so that when constructors install the bridge pile blocks, the stress area of the bridge pile blocks is reduced, and the bridge pile blocks are not damaged; therefore, in the process of installing the bridge pile blocks, the number of times that the bridge pile blocks are impacted by seabed undercurrent is small, and the weight of the bridge pile blocks is smaller than that of the whole bridge pile foundation, so that the speed and efficiency of installing the bridge pile blocks by constructors are both increased; besides, according to the scheme, an auxiliary support is further arranged, the auxiliary support has the effect of assisting constructors to stabilize the position of the bridge pile block due to the fact that the bridge pile block is not fixed at the moment when the bridge pile block is placed at the designated position, and the constructors can fix the bridge pile block conveniently; and meanwhile, the speed and efficiency of installing the bridge pile blocks by constructors are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge pile foundation construction, and in particular relates to a method for constructing bridge pile foundations based on bare rock with a large dip angle in deep water areas. Background Art

[0002] With the development of economic construction, deep-water bridge projects are indeed showing an increasing trend. Bridge pile foundations, as the core foundation type in bridge projects, are of self-evident importance and are widely used. Deep-water bridge projects usually face complex geological and hydrological conditions, which put forward extremely high requirements 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 the deep stable strata to ensure the stability and safety of the bridge.

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

[0004] Based on the search of the above patent authorization announcement number and the shortcomings found therein:

[0005] For bare rock areas with large inclination angles in deep water areas, it is difficult to install bridge pile foundations on the bare rock areas due to the large inclination angles of the bare rock areas. In addition, there are many submarine undercurrents in deep water areas. During the installation of bridge pile foundations in the bare rock areas, the submarine undercurrents will continuously act on the bridge pile foundations, causing the bridge pile foundations to continuously shake, thereby reducing the speed and efficiency of the bridge pile foundation installation. Summary of the invention

[0006] In order to solve the problem that for bare rock areas with large inclination angles in deep water areas, bridge pile foundations are difficult to install in the bare rock areas due to the large inclination angle of the bare rock areas; in addition, there are many submarine undercurrents in deep water areas. During the installation of the bridge pile foundation in the bare rock area, the submarine undercurrents will continuously act on the bridge pile foundation, causing the bridge pile foundation to continuously shake, thereby reducing the speed and efficiency of the bridge pile foundation installation. The present invention provides a method for constructing bridge pile foundations based on bare rock with large inclination angles in deep water areas.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A method for constructing a bridge pile foundation in deep-water areas with a large dip angle and 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 brackets, the plurality of bridge pile blocks being stacked in sequence from bottom to top, the plurality of auxiliary brackets being matched one-to-one with the plurality of bridge pile blocks, the auxiliary brackets being arranged on the corresponding bridge pile blocks;

[0009] The following steps are involved:

[0010] S1: A mounting plate is installed at a specified bare rock height in deep water areas;

[0011] S2: installing the bridge pile block on the mounting plate;

[0012] S3: After the bridge pile block is installed, the auxiliary bracket releases its restriction relationship with the bridge pile block, the auxiliary bracket can be extended, and the auxiliary bracket fits with the bare rock by extension;

[0013] S4: another bridge pile block is stacked on the already installed bridge pile block, and the corresponding auxiliary support is controlled to be arranged in contact with the bare rock;

[0014] S5: Repeat the above steps S2-S4 until all the bridge pile blocks are stacked in sequence to form a bridge pile foundation.

[0015] As a preferred technical solution of the present invention, the auxiliary bracket includes a plurality of internally hollow telescopic rods, an internally hollow articulated tube and a telescopic spring. The articulated tube is arranged on the bridge pile block, and the plurality of telescopic rods are coaxially and slidably arranged in the articulated tube in sequence. The two ends of the telescopic spring are respectively connected to the articulated tube and the telescopic rod closest to the bare rock.

[0016] As a preferred technical solution of the present invention, the telescopic rods are all provided with sliding grooves, the sliding grooves are interconnected with the interior of the telescopic rods, the inner diameter of the interior of the telescopic rods is larger than the inner diameter of the sliding grooves; the inner diameter of the sliding grooves of the telescopic rods increases gradually from the direction close to the bare rock to the direction far away from the bare rock, and the outer diameter of the telescopic rod close to the bare rock is equal to the inner diameter of the sliding groove of the adjacent telescopic rod far away from the bare rock, the hinge tube is coaxially provided with sliding grooves, the telescopic rod farthest from the bare rock is coaxially slidably arranged in the hinge tube, 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 technical solution of the present invention, the auxiliary bracket also includes a plurality of limiting blocks, and the plurality of limiting blocks are matched one-to-one with the plurality of telescopic rods. Any of the limiting blocks is coaxially arranged at the bottom of the corresponding telescopic rod, and the limiting block is the same as the inner diameter of the telescopic rod in which it slides, and the outer diameter of the limiting block farthest from the bare rock is equal to the inner diameter of the articulated tube.

[0018] As a preferred technical solution of the present invention, the auxiliary bracket also includes a plurality of abutment units, and the plurality of abutment units are matched one-to-one with the plurality of telescopic rods, and any of the abutment units is arranged on the corresponding telescopic rod; the abutment unit includes a plurality of abutment blocks and a plurality of abutment springs, and the telescopic rod is provided with a plurality of abutment grooves, and the plurality of abutment grooves are arranged on the outer side wall of the telescopic rod at equal intervals along the axial direction of the telescopic rod, and the plurality of abutment grooves and the plurality of abutment springs are matched one-to-one with the plurality of abutment blocks, and any of the abutment blocks can be slidably arranged on the corresponding abutment groove, and any of the abutment springs can be arranged in the corresponding abutment groove, and the two ends of the abutment spring are respectively connected to the abutment groove and the abutment block, and the abutment block can lock or release its fitting relationship with the end face of the telescopic rod.

[0019] As a preferred technical solution of the present invention, the bridge pile foundation structure also includes a limit unit, which includes a limit rod, a rotating rod, a pushing rod and a pushing spring. A movable groove is opened in the bridge pile block, one end of the movable groove is connected to the outside, the middle end of the rotating rod and the inside of the bridge pile block are hinged to each other, the limit rod can be horizontally slidably arranged in the movable groove, one end of the limit rod is slidably hinged to one end of the rotating rod along the central axis of the rotating rod, the pushing rod can be horizontally slidably arranged in the movable groove, the two ends of the pushing spring are respectively connected to the pushing rod and the bridge pile block, the pushing rod can lock or release its abutting relationship with the other end of the rotating rod, and the limit rod can lock or release its fitting relationship with the end face of the hinge tube.

[0020] As a preferred technical solution of the present invention, the bridge pile foundation structure also includes a positioning block, which is coaxially arranged on the top of the bridge pile block, and a mounting groove is coaxially opened on the bottom of the bridge pile block. When viewed from bottom to top, the positioning block on the bridge pile block at the bottom is matched with the mounting groove of the bridge pile block at the top.

[0021] As a preferred technical solution of the present invention, the limit unit also includes a limit plate, a limit spring and a sliding block. The limit plate can be vertically slidably arranged in the movable groove, the limit spring is arranged in the movable groove, the two ends of the limit spring are respectively connected to the limit plate and the bridge pile block, the limit plate is located between the rotating rod and the pushing rod, and the rotating rod is vertically arranged before it is not abutted against the pushing rod. The sliding block can be vertically slidably arranged in the movable groove, one end of the sliding block is connected to the limit plate, and the other end is telescopically arranged in the installation groove; the limit plate can lock or release its fitting relationship with the rotating rod and the pushing rod respectively.

[0022] As a preferred technical solution of the present invention, a through hole is coaxially opened at the bottom of the hinge cylinder, and the through hole is communicated with the interior of the hinge cylinder.

[0023] As a preferred technical solution of the present invention, a water pressure slot hole is also opened in the bridge pile block, and the water pressure slot hole is respectively connected with the external environment and the movable slot, and the push rod is slidably and sealedly arranged in the water pressure slot hole.

[0024] The beneficial effects of the present invention are:

[0025] This solution decomposes the bridge pile foundation into several bridge pile blocks and stacks them up in sequence from bottom to top, so that when the construction workers install the bridge pile blocks, the force-bearing area of ​​the bridge pile blocks is reduced. Therefore, during the installation of the bridge pile blocks, the bridge pile blocks are less likely to be impacted by the seabed undercurrent. In addition, the mass of the bridge pile blocks is lighter than that of the entire bridge pile foundation, so the speed and efficiency of the construction workers in installing the bridge pile blocks will be increased. In addition, this solution also provides an auxiliary bracket. The role of the auxiliary bracket is to assist the construction workers in stabilizing the position of the bridge pile blocks when the bridge pile blocks are placed in the specified position, because the bridge pile blocks have not been fixed at this time, so as to facilitate the construction workers Fixing the bridge pile blocks also increases the speed and efficiency of construction workers in installing the bridge pile blocks, and solves the problem of bare rock areas with large inclination angles in deep water areas. Due to the large inclination angle of the bare rock area, bridge pile foundations are difficult to install in the bare rock area; in addition, there are many submarine undercurrents in deep water areas. During the installation of the bridge pile foundation in the bare rock area, the submarine undercurrents will continuously act on the bridge pile foundation, causing the bridge pile foundation to continuously shake, thereby reducing the speed and efficiency of the bridge pile foundation installation; at the same time, after the bridge pile blocks are fixed, the role of the auxiliary bracket at this time is to increase the stability of the bridge pile block installation and prevent the bridge pile blocks from shaking violently due to the impact of the submarine undercurrents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0027] Figure 1 This is an overall diagram of a pile foundation structure of a bare rock bridge based on a deep-water area with a large dip angle according to the present invention;

[0028] Figure 2 A cross-sectional view of an articulated tube based on a deep-water large-angle bare rock bridge pile foundation structure according to the present invention;

[0029] Figure 3 The present invention is a schematic diagram of a limit unit structure based on a deep-water large-angle bare rock bridge pile foundation structure.

[0030] Description of main symbols

[0031] In the figure: 1. bridge pile block; 2. telescopic rod; 3. hinged tube; 4. telescopic spring; 5. limiting block; 6. abutment unit; 601. abutment block; 602. abutment spring; 7. limiting unit; 701. limiting rod; 702. rotating rod; 703. pushing rod; 704. pushing spring; 705. limiting plate; 706. limiting spring; 707. sliding block; 8. positioning block. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0033] See also Figure 1-Figure 3 This embodiment provides a method for constructing a bridge pile foundation based on a deep-water area with a large dip angle and bare rock. The construction method relies on a bridge pile foundation structure. The bridge pile foundation structure includes a plurality of bridge pile blocks 1 and a plurality of auxiliary brackets. The plurality of bridge pile blocks 1 are stacked in sequence from bottom to top. The plurality of auxiliary brackets are matched one by one with the plurality of bridge pile blocks 1. The auxiliary brackets are arranged on the corresponding bridge pile blocks 1.

[0034] The following steps are involved:

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

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

[0037] S3: After the bridge pile block 1 is installed, the auxiliary bracket releases its restriction relationship with the bridge pile block 1, and the auxiliary bracket can be extended and retracted, and the auxiliary bracket fits with the bare rock by extension; the role of the auxiliary bracket 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 block 1 is stacked on the already installed bridge pile block 1, and the corresponding auxiliary support is controlled to be arranged in contact with the bare rock;

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

[0040] This solution decomposes the bridge pile foundation into a number of bridge pile blocks 1 and stacks them up in sequence from bottom to top, so that when the construction workers install the bridge pile block 1, the force-bearing area of ​​the bridge pile block 1 is reduced. Therefore, during the installation of the bridge pile block 1, the bridge pile block 1 is less likely to be impacted by the seabed undercurrent. In addition, its mass is lighter than that of the entire bridge pile foundation, so the speed and efficiency of the construction workers in installing the bridge pile block 1 will be accelerated; in addition, this solution also provides an auxiliary bracket. The role of the auxiliary bracket is to assist the construction workers in stabilizing the position of the bridge pile block 1 when the bridge pile block 1 is placed in the specified position, because the bridge pile block 1 has not been fixed at this time, and the auxiliary bracket at this time plays a role in facilitating the construction The personnel fix the bridge pile block 1, which also increases the speed and efficiency of the construction personnel in installing the bridge pile block 1, and solves the problem that the bridge pile foundation is difficult to install in the bare rock area with a large inclination angle in the deep water area due to the large inclination angle of the bare rock area; in addition, there are many submarine undercurrents in the deep water area. During the installation of the bridge pile foundation in the bare rock area, the submarine undercurrents will continuously act on the bridge pile foundation, causing the bridge pile foundation to continuously shake, thereby reducing the speed and efficiency of the bridge pile foundation installation; at the same time, after the bridge pile block 1 is fixed, the role of the auxiliary bracket at this time is to increase the stability of the installation of the bridge pile block 1, and prevent the bridge pile block 1 from shaking violently due to the impact of the submarine undercurrent.

[0041] Specifically, the auxiliary bracket of the present scheme includes a plurality of telescopic rods 2 with hollow interiors, an internally hollow articulated tube 3 and a telescopic spring 4. The articulated tube 3 is arranged on the bridge pile block 1, and the plurality of telescopic rods 2 are coaxially and slidably arranged in the articulated tube 3 in turn. The two ends of the telescopic spring 4 are respectively connected to the articulated tube 3 and the telescopic rod 2 closest to the bare rock. The present scheme is provided with a plurality of telescopic rods 2. After the bridge pile block 1 is installed, the plurality of telescopic rods 2 are extended from the articulated tube 3 in turn until the telescopic rods 2 are fitted against the bare rock.

[0042] Furthermore, in the present embodiment, the telescopic rods 2 are all provided with sliding grooves, which are interconnected with the interior of the telescopic rods 2, and the inner diameter of the interior of the telescopic rods 2 is larger than the inner diameter of the sliding grooves; the inner diameter of the sliding grooves of the telescopic rods 2 increases gradually from the direction close to the bare rock to the direction away from the bare rock, and the outer diameter of the telescopic rods 2 close to the bare rock is equal to the inner diameter of the sliding grooves of the adjacent telescopic rods 2 away from the bare rock; the articulated tube 3 is coaxially provided with sliding grooves, and the telescopic rod 2 farthest from the bare rock is coaxially slidably arranged in the articulated tube 3, and the outer diameter of the telescopic rod 2 farthest from the bare rock is equal to the inner diameter of the sliding groove; through such an arrangement, a plurality of telescopic rods 2 are slid and extended step by step, ensuring that the auxiliary bracket of the present embodiment can be extended stably and step by step when extended.

[0043] In addition, the auxiliary bracket of the present scheme also includes a plurality of limiting blocks 5, and the plurality of limiting blocks 5 are matched with the plurality of telescopic rods 2 in a one-to-one manner. Any limiting block 5 is coaxially arranged at the bottom of the corresponding telescopic rod 2, and the limiting block 5 is the same as the inner diameter dimension of the telescopic rod 2 where it slides, and the outer diameter dimension of the limiting block 5 farthest from the bare rock is equal to the inner diameter dimension of the articulated tube 3. By providing the limiting block 5, due to the existence of the limiting block 5, the limiting block 5 can only slide inside the corresponding telescopic rod 2 and cannot slide out of the corresponding telescopic rod 2. Such an arrangement ensures that the auxiliary bracket can perform telescopic movement normally.

[0044] According to the above embodiment, after the auxiliary bracket is fitted with the bare rock, in order to prevent the auxiliary bracket from re-contracting due to other factors, that is, to release its fitting relationship with the bare rock; the auxiliary bracket of this scheme also includes a plurality of abutment units 6, and the plurality of abutment units 6 are matched one-to-one with the plurality of telescopic rods 2, and any abutment unit 6 is arranged on the corresponding telescopic rod 2; the abutment unit 6 includes a plurality of abutment blocks 601 and a plurality of abutment springs 602, and the telescopic rod 2 is provided with a plurality of abutment grooves, and the plurality of abutment grooves are arranged at equal intervals on the outer side wall of the telescopic rod 2 along the axial direction of the telescopic rod 2, and the plurality of abutment grooves and the plurality of abutment springs 602 are matched one-to-one with the plurality of abutment blocks 601, and any abutment block 601 can be slidably arranged in the corresponding abutment groove On the top, any abutment spring 602 is arranged in the corresponding abutment groove, and the two ends of the abutment spring 602 are respectively connected to the abutment groove and the abutment block 601, and the abutment block 601 can lock or release its fitting relationship with the end face of the telescopic rod 2; through such a setting, when the front telescopic rod 2 is still retracted in the rear telescopic rod 2, the abutment block 601 located at the front telescopic rod 2 is retracted into the corresponding abutment groove; when the front telescopic rod 2 is extended from the rear telescopic rod 2, the abutment block 601 located at the front telescopic rod 2 is extended from the corresponding abutment groove, and because the end face of the abutment block 601 will be arranged in abutment with the end face of the telescopic rod 2 located at the rear, it will limit the front telescopic rod 2 from re-contracting into the rear telescopic rod 2.

[0045] It is also worth noting that the bridge pile foundation structure of this scheme also includes a limiting unit 7, which 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 the movable groove 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 can be horizontally slidably arranged 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 can be horizontally slidably arranged in the movable groove, and the two ends of the pushing spring 704 are respectively connected to the pushing rod 703. It is connected to the inside of the bridge pile block 1, the pushing rod 703 can lock or release its abutting cooperation relationship with the other end of the rotating rod 702, and the limiting rod 701 can lock or release its fitting relationship with the end face of the hinge tube 3; it should be noted that when the pushing rod 703 is abutted against the other end of the rotating rod 702, the rotating rod 702 will rotate, and the limiting rod 701 hinged to one end of the rotating rod 702 will start to shrink into the bridge pile block 1. After the end of the limiting rod 701 extending out of the bridge pile block 1 releases its fitting relationship with the end face of the hinge tube 3, the telescopic rod 2 arranged in the hinge tube 3 starts to extend until the telescopic rod 2 is fitted 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 the present scheme also includes a positioning block 8, which is coaxially arranged on the top of the bridge pile block 1, and a mounting groove is coaxially opened on the bottom of the bridge pile block 1. From bottom to top, the positioning block 8 on the bridge pile block 1 at the bottom is matched with the mounting groove of the bridge pile block 1 at the top.

[0047] According to the above embodiment, in order to ensure that the auxiliary bracket arranged on the bridge pile block 1 will start to extend and retract after the bridge pile block 1 is placed on the completed bridge pile block 1; the limit unit 7 of this scheme also includes a limit plate 705, a limit spring 706 and a sliding block 707, the limit plate 705 can be vertically slidably arranged in the movable groove, the limit spring 706 is arranged in the movable groove, the two ends of the limit spring 706 are respectively connected to the limit plate 705 and the bridge pile block 1, the limit plate 705 is located between the rotating rod 702 and the pushing rod 703, the rotating rod 702 is vertically arranged before it is not abutted against the pushing rod 703, the sliding block 707 can be vertically slidably arranged in the movable groove, one end of the sliding block 707 is connected to the limit plate 705, and the other end thereof is telescopically arranged in the installation groove; the limit plate 705 can be locked or unlocked In addition to the fitting relationship with the rotating rod 702 and the pushing rod 703 respectively, through such a setting, when the bridge pile block 1 is placed on the completed bridge pile block 1, the installation groove of the bridge pile block 1 cooperates with the positioning block 8 on the completed bridge pile block 1. During the period when the positioning block 8 cooperates with the installation groove, the positioning block 8 will press the sliding block 707, so that the sliding block 707 shrinks toward the movable groove, and then drives the limiting plate 705 connected to the sliding block 707 to move toward the top of the movable groove, so that the limiting plate 705 releases its fitting relationship with the rotating rod 702 and the pushing rod 703. Under the action of the pushing spring 704, the pushing rod 703 realizes the abutting fitting relationship between the pushing rod 703 and the rotating rod 702, and the rotating rod 702 also starts to rotate, so that the limiting rod 701 moves toward the inside of the bridge pile block 1.

[0048] Furthermore, in order to ensure that the telescopic rod 2 located in the articulated tube 3 can be extended after the limiting rod 701 of the present scheme releases its fitting relationship with the end face of the articulated tube 3, a through hole is coaxially opened at the bottom of the articulated tube 3 of the present scheme, and the through hole is interconnected with the interior of the articulated tube 3; such an arrangement enables the telescopic rod 2 located in the articulated tube 3 to move toward the outside of the articulated tube 3 due to the water pressure of seawater in the deep water area after the limiting rod 701 releases its fitting relationship with the end face of the articulated tube 3, thereby avoiding the situation where the telescopic spring 4 cannot drive the telescopic rod 2 to extend due to the friction force between the limiting block 5 at the bottom of the front telescopic rod 2 and the abutting 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 articulated tube 3 is interconnected with the seawater, the friction between the telescopic rod 2 and the limiting rod 701 will inevitably increase when the telescopic rod 2 is not extended. In order to ensure that the push rod 703 can smoothly push the rotating rod 702, so that the limiting rod 701 can move smoothly and release the restrictive matching relationship between it and the telescopic rod 2, a hydraulic slot hole is also opened in the bridge pile block 1 of this solution. The hydraulic slot hole is respectively interconnected with the external environment and the movable slot, and the push rod 703 can be slidably sealed in the hydraulic slot hole. In addition, the push rod 703 and the hydraulic slot hole are sealed and matched with each other to prevent seawater from pouring into the movable slot.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for constructing a bridge pile foundation in deep water with a large dip angle and 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 brackets, the plurality of bridge pile blocks being stacked in sequence from bottom to top, the plurality of auxiliary brackets being matched one by one with the plurality of bridge pile blocks, the auxiliary brackets being arranged on the corresponding bridge pile blocks; It is characterized in that The following steps are involved: S1: A mounting plate is installed at a specified bare rock height in deep water areas; S2: installing the bridge pile block on the mounting plate; S3: After the bridge pile block is installed, the auxiliary bracket releases its restriction relationship with the bridge pile block, the auxiliary bracket can be extended, and the auxiliary bracket fits with the bare rock by extension; S4: another bridge pile block is stacked on the already installed bridge pile block, and the corresponding auxiliary support is controlled to be arranged in contact with the bare rock; S5: Repeat the above steps S2-S4 until all the bridge pile blocks are stacked in sequence to form a bridge pile foundation.

2. The method for constructing a deep-water high-angle bare rock bridge pile foundation according to claim 1 is characterized in that: The auxiliary bracket includes a plurality of internally hollow telescopic rods, an internally hollow articulated tube and a telescopic spring. The articulated tube is arranged on the bridge pile block, and the plurality of telescopic rods are coaxially and slidably arranged in the articulated tube in sequence. The two ends of the telescopic spring are respectively connected to the articulated tube and the telescopic rod closest to the bare rock.

3. The method for constructing a deep-water high-angle bare rock bridge pile foundation according to claim 2 is characterized in that: The telescopic rods are all provided with sliding grooves, the sliding grooves are interconnected with the interior of the telescopic rods, the inner diameter of the interior of the telescopic rods is larger than the inner diameter of the sliding grooves; the inner diameter of the sliding grooves of the telescopic rods increases gradually from the direction close to the bare rock to the direction far away from the bare rock, and the outer diameter of the telescopic rod close to the bare rock is equal to the inner diameter of the sliding groove of the adjacent telescopic rod far away from the bare rock; the articulated tube is coaxially provided with a sliding groove, the telescopic rod farthest from the bare rock is coaxially slidably arranged in the articulated tube, and the outer diameter of the telescopic rod farthest from the bare rock is equal to the inner diameter of the sliding groove.

4. The method for constructing a deep-water high-angle bare rock bridge pile foundation according to claim 3 is characterized in that: The auxiliary bracket also includes a plurality of limiting blocks, which are matched with a plurality of telescopic rods in a one-to-one manner. Any of the limiting blocks is coaxially arranged at the bottom of the corresponding telescopic rod. The limiting block has the same inner diameter as the telescopic rod in which it slides, and the outer diameter of the limiting block farthest from the bare rock is equal to the inner diameter of the articulated tube.

5. The method for constructing a bridge pile foundation in deep water with a large dip angle and bare rock according to claim 2, characterized in that: The auxiliary bracket also includes a plurality of abutment units, which are matched with a plurality of telescopic rods in a one-to-one correspondence, and any of the abutment units is arranged on the corresponding telescopic rod; the abutment unit includes a plurality of abutment blocks and a plurality of abutment springs, and the telescopic rod is provided with a plurality of abutment grooves, which are arranged at equal intervals on the outer side wall of the telescopic rod along the axial direction of the telescopic rod, and the plurality of abutment grooves and a plurality of abutment springs are matched with a plurality of abutment blocks in a one-to-one correspondence, and any of the abutment blocks can be slidably arranged on the corresponding abutment groove, and any of the abutment springs can be arranged in the corresponding abutment groove, and both ends of the abutment spring are respectively connected to the abutment groove and the abutment block, and the abutment block can lock or release its fitting relationship with the end face of the telescopic rod.

6. The method for constructing a deep-water high-angle bare rock bridge pile foundation according to claim 2 is characterized in that: The bridge pile foundation structure also includes a limit unit, which includes a limit rod, a rotating rod, a pushing rod and a pushing spring. A movable groove is opened in the bridge pile block, one end of the movable groove is connected to the outside, the middle end of the rotating rod and the inside of the bridge pile block are hinged to each other, the limit rod can be horizontally slidably arranged in the movable groove, one end of the limit rod is slidably hinged to one end of the rotating rod along the central axis of the rotating rod, the pushing rod can be horizontally slidably arranged in the movable groove, the two ends of the pushing spring are respectively connected to the pushing rod and the bridge pile block, the pushing rod can lock or release its abutting relationship with the other end of the rotating rod, and the limit rod can lock or release its fitting relationship with the end face of the hinge tube.

7. The method for constructing a deep-water high-angle bare rock bridge pile foundation according to claim 6 is characterized in that: The bridge pile foundation structure also includes a positioning block, which is coaxially arranged on the top of the bridge pile block. The bottom of the bridge pile block is coaxially provided with an installation groove. From bottom to top, the positioning block on the bridge pile block at the bottom is matched with the installation groove of the bridge pile block at the top.

8. The method for constructing a deep-water high-angle bare rock bridge pile foundation according to claim 7 is characterized in that: The limiting unit also includes a limiting plate, a limiting spring and a sliding block. The limiting plate can be vertically slidably arranged in the movable groove, the limiting spring is arranged in the movable groove, the two ends of the limiting spring are respectively connected to the limiting plate and the bridge pile block, the limiting plate is located between the rotating rod and the pushing rod, and the rotating rod is vertically arranged before it is not abutted against the pushing rod. The sliding block can be vertically slidably arranged in the movable groove, one end of the sliding block is connected to the limiting plate, and the other end thereof is telescopically arranged in the installation groove; the limiting plate can lock or release its fitting relationship with the rotating rod and the pushing rod respectively.

9. The method for constructing a deep-water high-angle bare rock bridge pile foundation according to claim 2, characterized in that: A through hole is coaxially formed at the bottom of the hinge cylinder, and the through hole is communicated with the interior of the hinge cylinder.

10. The method for constructing a pile foundation of a bridge in deep water with a large dip angle and bare rock according to claim 6, characterized in that: A water pressure slot hole is also provided in the bridge pile block, and the water pressure slot hole is respectively connected with the external environment and the movable slot, and the push rod is slidably and sealedly arranged in the water pressure slot hole.

Images