An integrally assembled pier of an elevated bridge and a construction method thereof

Abstract

The present invention relates to an integrally assembled pier of an elevated bridge and a construction method, belonging to the technical field of assembled piers. By setting a positioning rod, a prefabricated connecting piece at the bottom layer is first placed at a designated position on the seabed, and the prefabricated connecting piece at the bottom layer is fixed at the designated position on the seabed. Then, a positioning pin is installed on the positioning slot of the prefabricated connecting piece at the bottom layer, and after the positioning rod is inserted, another prefabricated connecting piece is slowly sunk toward the position of the prefabricated connecting piece at the bottom layer through the cooperation between its positioning hole and the positioning rod. During the sinking of the other prefabricated connecting piece, even if it is affected by the force of the undercurrent on the seabed, due to the restriction between the positioning rod and the positioning hole, the other prefabricated connecting piece will not shake violently. Finally, two adjacent prefabricated connecting pieces are matched and installed with high precision through the positioning pin. After the two prefabricated connecting pieces are installed with each other, the above-mentioned installation process is repeated to complete the installation of the pier.

Description

Technical Field

[0001] The present invention belongs to the technical field of assembled bridge piers, and in particular relates to an integral assembled bridge pier of an elevated bridge and a construction method. Background Art

[0002] Prefabricated bridge piers are based on the idea of ​​breaking the whole into parts. The overall structure is decomposed into several prefabricated components. After the prefabricated components are processed and manufactured inside the factory, the segmented prefabricated components are transported to the construction site and then assembled into a whole in a certain way, thereby realizing the construction technology of excellent overall structure.

[0003] For example, the invention patent with patent application publication number: CN116676857A discloses a prefabricated assembled elevated bridge pier, including a pier foundation, the upper part of the pier foundation is vertically connected to the prefabricated pier, the upper part of the prefabricated pier is connected to the pedestal, the middle and bottom of the prefabricated pier are provided with steel embedded parts, and the outside of the steel embedded parts is provided with cast-in-place concrete; by arranging the steel embedded parts, the pain points of the current prefabricated assembled bridge piers can be solved, and the effects of simple construction, economic reliability, and resistance to earthquake damage can be achieved.

[0004] Based on the search of patent application publication numbers and the shortcomings found therein:

[0005] When existing prefabricated bridge piers are built at sea, due to the large number of undercurrents on the seabed, individual prefabricated components will be shaken during installation due to the force of the undercurrents, making it difficult to achieve high-precision coordination and installation between prefabricated components, which in turn makes it difficult to build prefabricated bridge piers at sea. Summary of the invention

[0006] In order to solve the problem that when existing prefabricated piers are built at sea, due to the large number of seabed undercurrents, individual prefabricated components will be shaken during installation due to the force of the seabed undercurrents, making it difficult to achieve high-precision matching installation between prefabricated components, thereby making it difficult to build prefabricated piers at sea, the present invention provides an integral prefabricated pier for an elevated bridge and a construction method.

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

[0008] An integrally assembled pier of an elevated bridge comprises a plurality of prefabricated connecting parts, a positioning rod and a plurality of positioning pins. The plurality of prefabricated connecting parts are sequentially fitted on the seabed from bottom to top along the vertical direction. The prefabricated connecting parts are provided with positioning holes. The positioning holes of the plurality of prefabricated connecting parts are coaxially connected to each other. The positioning rod is vertically arranged in the positioning hole. The inner diameter of the positioning hole is larger than the outer diameter of the positioning rod. A positioning slot is arranged between two adjacent prefabricated connecting parts. The positioning slot is coaxially arranged with the positioning hole. The inner diameter of the positioning slot is larger than the inner diameter of the positioning hole. A plurality of positioning pins are matched with the plurality of positioning slots in a one-to-one correspondence. Any of the positioning pins is coaxially embedded in the positioning slot. The outer diameter of the positioning pin is equal to the inner diameter of the positioning slot. The inner diameter of the positioning pin is equal to the outer diameter of the positioning rod.

[0009] The top and bottom ends of the prefabricated connectors are both provided with coaxially arranged positioning holes, the positioning holes of two adjacent prefabricated connectors form a connecting space, a plurality of positioning rods and a plurality of connecting spaces are matched one by one, and any of the positioning rods is arranged in a corresponding connecting space;

[0010] The prefabricated connecting piece comprises a prefabricated main body with a hollow interior, a driving sealing plate and a driving assembly. A driving slot hole is provided at the bottom of the prefabricated main body, the driving slot hole is communicated with the interior of the prefabricated connecting piece, the driving sealing plate is slidably and sealingly arranged in the driving slot hole, the driving assembly is connected to the driving sealing plate to control the sliding of the driving sealing plate, and the driving sealing plate can lock or release its sealing relationship with the driving slot hole;

[0011] The driving assembly is arranged in the prefabricated body, and the driving assembly includes a driving spring, a driving rod and a driving block. The two ends of the driving spring are respectively connected to the driving sealing plate and the prefabricated body. The prefabricated body is also provided with a connecting groove, and the connecting groove is connected to the positioning hole provided at the bottom end of the prefabricated body. The driving block is slidably arranged in the connecting groove, and the two ends of the driving rod are respectively connected to the driving block and the driving sealing plate. The driving block can lock or release its abutting relationship with the positioning pin.

[0012] As a preferred technical solution of the present invention, the transverse cross-sectional thickness of the driving block increases gradually from bottom to top along the axial direction of the positioning hole.

[0013] As a preferred technical solution of the present invention, the driving assembly also includes a linkage plate and a linkage spring. A matching groove is provided at the top of the prefabricated connecting piece. The cross-sectional shape of the matching groove is adapted to the cross-sectional shape of the bottom of the prefabricated connecting piece. A linkage groove is also provided at the top of the prefabricated connecting piece. The linkage groove is located in the matching groove. The linkage groove is connected to the interior of the prefabricated connecting piece. The linkage plate can be slidably and sealedly arranged in the linkage groove. The linkage spring is arranged in the prefabricated connecting piece. Both ends of the linkage spring are respectively connected to the prefabricated connecting piece and the linkage plate. The linkage plate can lock or release its sealing relationship with the linkage groove.

[0014] As a preferred technical solution of the present invention, the prefabricated connecting member also includes a waterstop strip, which is arranged on the inner side wall of the matching groove around the central axis of the matching groove, and is used to ensure the sealing of the connection between two adjacent prefabricated connecting members.

[0015] As a preferred technical solution of the present invention, the driving component also includes an engaging block, which is arranged on the bottom surface of the driving sealing plate. An engaging groove is opened on the top of the linkage plate, and the engaging groove can lock or release its engaging relationship with the engaging block.

[0016] As a preferred technical solution of the present invention, the height dimension of the driving block is the same as the height dimension of the waterstop belt. When the driving block is in contact with the positioning pin, the bottom of the prefabricated body located at the top is fitted with the waterstop belt of the prefabricated body located at the bottom.

[0017] A construction method for an integrally assembled pier of an elevated bridge comprises the following steps:

[0018] S1: placing the prefabricated connection member at the bottom layer at a designated position on the seabed;

[0019] S2: placing the positioning rod on the prefabricated connecting member at the bottom layer;

[0020] S3: The positioning pin is arranged on the bottom layer of the prefabricated connecting member, and the positioning pin cooperates with the positioning rod to limit the central axis of the positioning rod to the central axis of the positioning hole of the prefabricated connecting member;

[0021] S4: moving another prefabricated connecting member toward the bottom prefabricated connecting member through the positioning hole and the positioning rod;

[0022] S5: another prefabricated connecting member is matched with the positioning pin to achieve a fitting arrangement with the prefabricated connecting member at the bottom layer;

[0023] S6: Repeat steps S3-S5 until all the prefabricated connecting parts are stacked.

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

[0025] This solution is provided with a positioning rod. First, the bottom prefabricated connection piece is placed at the designated position on the seabed, and the bottom prefabricated connection piece is fixed at the designated position on the seabed. Then, the positioning pin is installed on the positioning slot of the bottom prefabricated connection piece, and after the positioning rod is inserted, another prefabricated connection piece is slowly sunk toward the position of the bottom prefabricated connection piece through the cooperation between its positioning hole and the positioning rod. During the sinking of the other prefabricated piece, even if it is affected by the force of the undercurrent on the seabed, due to the restriction between the positioning rod and the positioning hole, the other prefabricated piece will not shake violently. Finally, the two adjacent prefabricated connecting parts are installed with high precision through the positioning pins. After the two prefabricated connecting parts are installed to each other, the positioning pins are installed on the positioning slots of the top prefabricated connecting parts, and the above installation process is repeated to complete the installation of the bridge piers. This solves the problem that when the existing prefabricated piers are built at sea, due to the large number of submarine undercurrents, a single prefabricated component will be shaken during the installation process due to the force of the submarine undercurrents, making it difficult to achieve high-precision matching installation between prefabricated components, which in turn makes it difficult to build prefabricated piers at sea. 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 It is a front view of an integrally assembled bridge pier of an elevated bridge according to the present invention;

[0028] Figure 2 This is a cross-sectional view of a single prefabricated connecting piece of an integrally assembled pier of an elevated bridge according to the present invention.

[0029] Description of main symbols:

[0030] In the figure: 1. Prefabricated connecting part; 101. Prefabricated main body; 102. Driving sealing plate; 2. Positioning rod; 3. Positioning pin; 4. Driving assembly; 401. Driving spring; 402. Driving rod; 403. Driving block; 404. Linkage plate; 405. Linkage spring; 406. Mosaic block; 5. Waterstop. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-2The present embodiment provides an integrally assembled pier of an elevated bridge, comprising a plurality of prefabricated connecting members 1, a positioning rod and a plurality of positioning pins 3. The plurality of prefabricated connecting members 1 are stacked and fitted with each other in sequence from bottom to top along the vertical direction on the seabed. The prefabricated connecting members 1 are provided with positioning holes. The positioning holes of the plurality of prefabricated connecting members 1 are coaxially connected to each other. The positioning rod is vertically arranged in the positioning hole. The inner diameter of the positioning hole is larger than the outer diameter of the positioning rod. A positioning slot is arranged between two adjacent prefabricated connecting members 1. The positioning slot is coaxially arranged with the positioning hole. The inner diameter of the positioning slot is larger than the inner diameter of the positioning hole. The plurality of positioning pins 3 are matched with the plurality of positioning slots in a one-to-one correspondence. Any positioning pin 3 is coaxially embedded in the positioning slot. The outer diameter of the positioning pin 3 is equal to the inner diameter of the positioning slot. The inner diameter of the positioning pin 3 is equal to the outer diameter of the positioning rod. It is worth noting that, in the present scheme, by setting the positioning rod, the bottom layer of the prefabricated connecting member 1 is first placed on a designated position on the seabed, and the bottom layer of the prefabricated connecting member 1 is fixed to the designated position on the seabed. After the locating pins 3 are installed on the positioning slots of the prefabricated connecting member 1 at the bottom layer, and the positioning rod is inserted, another prefabricated connecting member 1 is slowly sunk toward the position of the prefabricated connecting member 1 at the bottom layer through the cooperation of its positioning hole and the positioning rod. During the sinking of the other prefabricated member, even if it is affected by the force of the submarine undercurrent, due to the restriction between the positioning rod and the positioning hole, the other prefabricated member will not shake violently. Finally, the two adjacent prefabricated connecting members 1 are installed with high precision through the positioning pins 3. After the two prefabricated connecting members 1 are installed to each other, the positioning pins 3 are installed on the positioning slots of the top prefabricated connecting member 1, and the above installation process is repeated to complete the installation of the piers. This solves the problem that when the existing prefabricated piers are built at sea, due to the large number of submarine undercurrents, a single prefabricated component will be affected by the force of the submarine undercurrents during the installation process and shake, making it difficult to achieve high-precision matching installation between prefabricated components, which in turn leads to the problem that prefabricated piers are difficult to build at sea.

[0033] Specifically, in the above scheme, the length of the positioning rod must be long enough to achieve the cooperation between the positioning rod and the positioning holes of several prefabricated connecting parts 1. However, such a setting needs to ensure that the size of the positioning rod is large enough to resist the undercurrents on the seabed, but similarly, the manufacturing cost of the positioning rod also increases; based on this, the positioning rod of this scheme includes several positioning rods 2, and the top and bottom ends of the prefabricated connecting parts 1 are provided with coaxially arranged positioning holes, and the positioning holes of two adjacent prefabricated connecting parts 1 form a connecting space. It should be noted here that the positioning hole at the top of a prefabricated connecting part 1 and the positioning hole at the bottom of another prefabricated connecting part 1 jointly form a connecting space, and several positioning rods 2 and several connecting spaces are matched one by one, and any positioning rod 2 is arranged in the corresponding connecting space. Through such a setting, not only can it be ensured that each positioning rod 2 is on the same central axis, but also, by replacing the entire positioning rod with each positioning rod 2, not only the size requirements of the scheme for the positioning rod 2 are reduced, but also installation is convenient.

[0034] Specifically, the prefabricated connector 1 of the present invention comprises a prefabricated main body 101 with a hollow interior, a driving sealing plate 102 and a driving assembly 4. A driving slot is provided at the bottom of the prefabricated main body 101, and the driving slot is communicated with the interior of the prefabricated connector 1. The driving sealing plate 102 can be slidably and sealedly arranged in the driving slot. The driving assembly 4 is connected to the driving sealing plate 102 to control the sliding of the driving sealing plate 102. The driving sealing plate 102 can lock or release its sealing relationship with the driving slot. It should be noted that in order to further speed up the construction of the prefabricated connector 1, the prefabricated connector 1 of the present invention is not completely solid, but first the prefabricated main body 101 with a hollow interior is firstly After the main body 101 is built, the hollow interior of the prefabricated main body 101 is filled by internal pouring, and the set driving component 4 controls the sliding of the driving sealing plate 102; the driving sealing plate 102 has the function of locking or releasing the sealing cooperation relationship between it and the driving slot hole. When the driving sealing plate 102 locks its sealing cooperation relationship with the driving slot hole, the interior of the prefabricated main body 101 and the external environment cannot be connected to each other; when the driving sealing plate 102 releases its sealing cooperation relationship with the driving slot hole, the interior of the prefabricated main body 101 and the external environment are connected to each other, thereby realizing the pouring of the interior of the prefabricated main body 101.

[0035] Furthermore, the driving assembly 4 of the present invention is arranged in the prefabricated main body 101, and the driving assembly 4 includes a driving spring 401, a driving rod 402 and a driving block 403. The two ends of the driving spring 401 are respectively connected to the driving sealing plate 102 and the prefabricated main body 101. The prefabricated main body 101 is also provided with a connecting groove, which is connected to the positioning hole provided at the bottom end of the prefabricated main body 101. The driving block 403 is slidably arranged in the connecting groove, and the two ends of the driving rod 402 are respectively connected to the driving block 403 and the driving sealing plate 102. The driving block 403 can lock or release its abutting matching relationship with the positioning pin 3; it is worth mentioning that It is clear that when the prefabricated main body 101 has not been installed, the driving spring 401 located in the prefabricated main body 101 controls the driving sealing plate 102, so that the driving sealing plate 102 locks its sealing cooperation with the driving slot hole; when the prefabricated main body 101 is installed, the positioning pin 3 on the prefabricated main body 101 at the bottom will cooperate with the positioning hole in the prefabricated main body 101 at the top, and then the positioning pin 3 controls the driving sealing plate 102 to release its sealing cooperation relationship with the driving slot hole by pressing the driving block 403, so that the internal space of the prefabricated main body 101 at the top is connected with the driving slot hole.

[0036] Specifically, in order to realize that the driving block 403 of the present solution can be smoothly controlled to move, the transverse cross-sectional thickness of the driving block 403 of the present solution gradually increases from bottom to top along the axial direction of the positioning hole.

[0037] In addition, in order to realize that the interiors of the installed prefabricated main bodies 101 are in a state of interconnection, it is necessary that the interior of the prefabricated main body 101 located at the top is interconnected with the interior of the prefabricated main body 101 located at the bottom. Therefore, it is required that when the interior of the prefabricated main body 101 located at the top is interconnected with its bottom, the interior of the prefabricated main body 101 located at the bottom is interconnected with its top at the same time. Only in this way can the interiors of the installed prefabricated main bodies 101 be in a state of interconnection. Based on this, the driving component 4 of the present solution also includes a linkage plate 404 and a linkage spring 405. A matching groove is provided at the top of the prefabricated connector 1, and the cross-sectional shape of the matching groove is consistent with the cross-sectional shape of the bottom of the prefabricated connector 1. Correspondingly, a linkage groove is also provided on the top of the prefabricated connecting member 1, and the linkage groove is located in the matching groove. The linkage groove is connected with the interior of the prefabricated connecting member 1, and a linkage plate 404 is slidably and sealedly arranged in the linkage groove. A linkage spring 405 is arranged in the prefabricated connecting member 1, and both ends of the linkage spring 405 are respectively connected with the prefabricated connecting member 1 and the linkage plate 404. The linkage plate 404 can lock or release its sealing relationship with the linkage groove. Through such a setting, when the linkage plate 404 releases its sealing relationship with the linkage groove, the interior of the prefabricated main body 101 is connected with the linkage groove; when the linkage plate 404 locks its sealing relationship with the linkage groove, the interior of the prefabricated main body 101 cannot be connected with the linkage groove.

[0038] It is worth mentioning that the prefabricated connecting member 1 of the present solution also includes a waterstop 5, which is arranged on the inner wall of the matching groove around the central axis of the matching groove. The waterstop 5 is used to ensure the sealing of the connection between two adjacent prefabricated connecting members 1.

[0039] Furthermore, the driving assembly 4 of the present solution further includes an engaging block 406, which is arranged on the bottom surface of the driving sealing plate 102, and an engaging groove is provided on the top of the linkage plate 404, which can lock or release the engaging relationship between the engaging block 406 and the engaging groove. When the two prefabricated connectors 1 are connected to each other, the engaging block 406 of the prefabricated connector 1 at the top cooperates with the engaging groove of the prefabricated connector 1 at the bottom, and when the driving sealing plate 102 starts to slide, the driving sealing plate 102 drives the engaging block 406 connected thereto to move together, and then the engaging block 406 drives the linkage plate 404 matched thereto to slide together, thereby realizing that the interiors of the two installed prefabricated connectors 1 are connected to each other.

[0040] It is worth noting that the height dimension of the driving block 403 is the same as the height dimension of the waterstop 5. When the driving block 403 is in contact with the positioning pin 3, the bottom of the prefabricated body 101 located at the top is fitted with the waterstop 5 of the prefabricated body 101 located at the bottom. Such a setting ensures that seawater will not be poured into the interior of the prefabricated connecting part 1, thereby ensuring the normal construction of the plan.

[0041] A construction method for an integrally assembled pier of an elevated bridge comprises the following steps:

[0042] S1: placing the bottom prefabricated connection member 1 at a designated position on the seabed;

[0043] S2: Setting the positioning rod on the prefabricated connecting member 1 at the bottom layer;

[0044] S3: The positioning pin 3 is arranged on the bottom prefabricated connecting member 1, and the positioning pin 3 cooperates with the positioning rod to limit the central axis of the positioning rod to the central axis of the positioning hole of the prefabricated connecting member 1;

[0045] S4: move another prefabricated connecting member 1 toward the bottom prefabricated connecting member 1 through the positioning hole and the positioning rod;

[0046] S5: another prefabricated connecting member 1 is matched with the positioning pin 3 to achieve a fitting arrangement with the prefabricated connecting member 1 at the bottom layer;

[0047] S6: Repeat steps S3-S5 until all prefabricated connectors 1 are stacked.

[0048] 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 modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An integrally assembled pier for an elevated bridge, characterized in that: It comprises a plurality of prefabricated connecting parts, a positioning rod and a plurality of positioning pins. The plurality of prefabricated connecting parts are sequentially fitted on the seabed from bottom to top along the vertical direction. The prefabricated connecting parts are provided with positioning holes. The positioning holes of the plurality of prefabricated connecting parts are coaxially connected to each other. The positioning rod is vertically arranged in the positioning hole. The inner diameter of the positioning hole is larger than the outer diameter of the positioning rod. A positioning slot is arranged between two adjacent prefabricated connecting parts. The positioning slot is coaxially arranged with the positioning hole. The inner diameter of the positioning slot is larger than the inner diameter of the positioning hole. A plurality of positioning pins are matched with the plurality of positioning slots in a one-to-one correspondence. Any of the positioning pins is coaxially embedded in the positioning slot. The outer diameter of the positioning pin is equal to the inner diameter of the positioning slot. The inner diameter of the positioning pin is equal to the outer diameter of the positioning rod. The positioning rod includes a plurality of positioning rods, the top and bottom ends of the prefabricated connectors are provided with coaxially arranged positioning holes, the positioning holes of two adjacent prefabricated connectors form a connecting space, the plurality of positioning rods and the plurality of connecting spaces are matched one by one, and any of the positioning rods is arranged in a corresponding connecting space; The prefabricated connecting piece comprises a prefabricated main body with a hollow interior, a driving sealing plate and a driving assembly. A driving slot hole is provided at the bottom of the prefabricated main body, the driving slot hole is communicated with the interior of the prefabricated connecting piece, the driving sealing plate is slidably and sealingly arranged in the driving slot hole, the driving assembly is connected to the driving sealing plate to control the sliding of the driving sealing plate, and the driving sealing plate can lock or release its sealing relationship with the driving slot hole; The driving assembly is arranged in the prefabricated body, and the driving assembly includes a driving spring, a driving rod and a driving block. The two ends of the driving spring are respectively connected to the driving sealing plate and the prefabricated body. The prefabricated body is also provided with a connecting groove, and the connecting groove is connected to the positioning hole provided at the bottom end of the prefabricated body. The driving block is slidably arranged in the connecting groove, and the two ends of the driving rod are respectively connected to the driving block and the driving sealing plate. The driving block can lock or release its abutting relationship with the positioning pin.

2. The integrally assembled pier of an elevated bridge according to claim 1, characterized in that: The transverse cross-sectional thickness of the driving block increases gradually from bottom to top along the axial direction of the positioning hole.

3. The integrally assembled pier of an elevated bridge according to claim 1, characterized in that: The driving assembly also includes a linkage plate and a linkage spring. A matching groove is provided on the top of the prefabricated connecting piece. The cross-sectional shape of the matching groove is adapted to the cross-sectional shape of the bottom of the prefabricated connecting piece. A linkage groove is also provided on the top of the prefabricated connecting piece. The linkage groove is located in the matching groove. The linkage groove is communicated with the interior of the prefabricated connecting piece. The linkage plate can be slidably and sealedly arranged in the linkage groove. The linkage spring is arranged in the prefabricated connecting piece. Both ends of the linkage spring are respectively connected to the prefabricated connecting piece and the linkage plate. The linkage plate can lock or release its sealing relationship with the linkage groove.

4. The integrally assembled pier of an elevated bridge according to claim 3, characterized in that: The prefabricated connecting piece also includes a waterstop, which is arranged on the inner side wall of the matching groove around the central axis of the matching groove, and is used to ensure the sealing of the connection between two adjacent prefabricated connecting pieces.

5. The integrally assembled pier of an elevated bridge according to claim 3, characterized in that: The driving assembly also includes an engaging block, which is arranged on the bottom surface of the driving sealing plate. The top of the linkage plate is provided with an engaging groove, which can lock or release the engaging relationship between the engaging groove and the engaging block.

6. The integrally assembled pier of an elevated bridge according to claim 4, characterized in that: The height dimension of the driving block is the same as the height dimension of the water stop belt. When the driving block contacts the positioning pin, the bottom of the prefabricated body located at the top is fitted with the water stop belt of the prefabricated body located at the bottom.

7. A construction method for an integrally assembled pier of an elevated bridge, applicable to the integrally assembled pier of an elevated bridge according to any one of claims 2 to 6, characterized in that: The following steps are involved: S1: placing the prefabricated connection member at the bottom layer at a designated position on the seabed; S2: placing the positioning rod on the prefabricated connecting member at the bottom layer; S3: The positioning pin is arranged on the bottom layer of the prefabricated connecting member, and the positioning pin cooperates with the positioning rod to limit the central axis of the positioning rod to the central axis of the positioning hole of the prefabricated connecting member; S4: moving another prefabricated connecting member toward the bottom prefabricated connecting member through the positioning hole and the positioning rod; S5: another prefabricated connecting member is matched with the positioning pin to achieve a fitting arrangement with the prefabricated connecting member at the bottom layer; S6: Repeat steps S3-S5 until all the prefabricated connecting parts are stacked.

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