Method of constructing a dock

Abstract

The application provides a construction method of a dock, comprising: assembling a steel pipe cylinder structure; the steel pipe cylinder structure comprises a plurality of first steel pipes and an I-shaped steel connecting two adjacent first steel pipes; constructing the steel pipe cylinder structure; each steel pipe cylinder structure is driven into a construction position; constructing a steel sheet pile; the steel sheet pile is driven between adjacent steel pipe cylinder structures; constructing a dock gate structure; two steel pipe cylinder structures at the head and tail are connected with two dock gate piers respectively to form a closed dock; connecting a dock wall; water in the dock is drained, a post-cast strip is cast between two opposite first baffles; a second backfill part is formed by backfilling between the first baffle and the steel sheet pile; and constructing a surface layer above the steel pipe cylinder structure to form the surface layer.

Description

Technical Field

[0001] This application belongs to the field of construction and relates to a method for constructing a shipyard. Background Technology

[0002] A dry dock is a dock-like structure used for shipbuilding and repair. When flooded, it allows ships to enter and exit; when dewatered, it allows for shipbuilding and repair on a dry bottom. It serves as a working platform in a shipyard, a place for repairing and building ships. A dry dock is formed by surrounding walls, and the construction structure and quality of these walls affect the dry dock's lifespan. Summary of the Invention

[0003] The purpose of this application is to provide a dock wall structure and a dock, as well as a construction method for the dock, resulting in a stable and robust dock with an extended service life.

[0004] The first aspect of this application provides a dock wall structure, including:

[0005] Multiple steel pipe cylindrical structures; each steel pipe cylindrical structure includes multiple first steel pipes and I-beams connecting two adjacent first steel pipes; wherein, the I-beams have two parallel flanges and webs respectively connecting the two flanges, and the two ends of each flange are respectively connected to the two adjacent first steel pipes; the multiple first steel pipes and the multiple I-beams connecting them are arranged to form the steel pipe cylindrical structure;

[0006] The first baffle is longitudinally arranged on the outside of the steel pipe cylindrical structure; the first baffles between two adjacent steel pipe cylindrical structures are arranged opposite each other, forming a post-pouring strip between them;

[0007] Steel sheet piles are installed between two adjacent steel pipe cylindrical structures; wherein, the first baffle is close to the inner side of the dock wall structure, and the steel sheet piles are close to the outer side of the dock wall structure.

[0008] The second backfill section is located between the first baffle and the sheet pile;

[0009] The surface layer is located above the steel pipe cylindrical structure and above the first baffle.

[0010] In one embodiment, the steel pipe cylindrical structure further includes a second steel pipe and a concrete cylinder; wherein the diameter of the second steel pipe is smaller than that of the first steel pipe, the number of second steel pipes is less than that of the first steel pipes, and they are spaced apart on the steel pipe cylindrical structure to connect two adjacent first steel pipes, replacing the I-beams at that location; the second steel pipe has an extension longer than the first steel pipe and the I-beam. The concrete cylinder is annular, its outer diameter is approximately equal to the outer diameter of the steel pipe cylindrical structure, its thickness is approximately equal to the diameter of the first steel pipe, and it has a plurality of elongated holes along its circumference that match the extensions of the second steel pipes. The extensions of the second steel pipes are inserted into the elongated holes of the concrete cylinder, thereby allowing the concrete cylinder to be installed above the first steel pipes and the I-beams, forming the steel pipe cylindrical structure.

[0011] In one embodiment, the first baffle is located outside the concrete cylinder, and the two are integrally formed.

[0012] In one embodiment, the outer diameter of the steel pipe cylindrical structure is 15-30 mm, the diameter of the first steel pipe is 400-600 mm, and the diameter of the second steel pipe is 200-300 mm.

[0013] In one embodiment, the center of the first steel pipe, the center of the second steel pipe, and the center of the I-beam are located on the same circumference of the steel pipe cylindrical structure.

[0014] In one embodiment, the upper part of the steel pipe cylindrical structure is provided with a cross beam connected to the surface layer to bear the pressure applied to the surface layer.

[0015] In one embodiment, the interior backfill of each steel pipe cylindrical structure forms a first backfill section. In the second backfill section, a water-stop curtain is provided between two adjacent steel pipe cylindrical structures; the water-stop curtain is formed by mixing piles or jet grouting piles.

[0016] In one embodiment, a precast slab is laid on top of the steel pipe cylindrical structure; a second baffle extending longitudinally downward is provided on the inner side of the precast slab.

[0017] In one embodiment, a stop block and a culvert are provided above the precast slab, wherein the stop block is located above a second stop plate and is used to limit the movement of the culvert. Above the precast slab, backfill is formed on the outside of the culvert to form a third backfill section at the same height as the culvert; the surface layer is located above the culvert and the third backfill section.

[0018] The second aspect of this application provides a dock, which includes the dock wall structure described in any of the preceding embodiments, wherein the dock wall structure is connected to two dock gate piers respectively, and a dock gate is provided between the dock gate piers.

[0019] A third aspect of this application provides a method for constructing a dry dock, comprising the following steps:

[0020] Assembly of the steel pipe cylindrical structure: The assembled steel pipe cylindrical structure is cylindrical, with multiple first steel pipes on its circumference and I-beams connecting two adjacent first steel pipes; wherein, the I-beams have two parallel flanges and webs connecting the two flanges respectively, and the two ends of each flange are connected to the two adjacent first steel pipes respectively.

[0021] Construction of the steel pipe cylindrical structure: Mark the construction location of the steel pipe cylindrical structure; use a vibratory sinker to drive the steel pipe cylindrical structure to the designated location and to its designed depth. Then, drive the next steel pipe cylindrical structure, ensuring that the first baffles of adjacent steel pipe cylindrical structures are positioned opposite each other, forming a post-cast strip between them. Repeat the above steps to complete the construction of the steel pipe cylindrical structure.

[0022] Sheet pile construction: On the outer side of the dock, sheet piles are driven between two adjacent steel pipe cylindrical structures; the bottom of the sheet pile is inserted into the soil and the upper part of the sheet pile is exposed above the water surface.

[0023] Construction of the dock gate structure: The dock gate structure includes two dock gate piers; two steel pipe cylindrical structures at the head and tail are connected to the two dock gate piers respectively to form a closed dock.

[0024] Dock wall connection: Drain the water from the dock and pour the post-cast strip between the two opposing first baffles. Backfill between the first baffles and the sheet piles to form the second backfill section.

[0025] Surface layer construction: The surface layer is constructed above the steel pipe cylindrical structure, above the first baffle, and above the second backfill section.

[0026] As one embodiment, the construction steps of the steel pipe cylindrical structure more specifically include: marking the construction position of the steel pipe cylindrical structure; installing the replacement assembly onto the top of the steel pipe cylindrical structure; using a vibratory sinking device to drive the steel pipe cylindrical structure to the construction position through the replacement assembly, and vibrating to the designed depth of the steel pipe cylindrical structure; removing the replacement assembly. Then, the next steel pipe cylindrical structure is driven, so that the first baffle between two adjacent steel pipe cylindrical structures is set opposite to each other. The above steps are repeated to complete the construction of the steel pipe cylindrical structure.

[0027] As one embodiment, in the assembly step of the steel pipe cylindrical structure, the steel pipe cylindrical structure further includes a second steel pipe and a concrete cylinder. The second steel pipe has a smaller diameter and fewer quantity than the first steel pipe, and is spaced apart on the steel pipe cylindrical structure to connect two adjacent first steel pipes, replacing the H-beams at that location. The second steel pipe has an extension longer than both the first steel pipe and the H-beam. The concrete cylinder is annular, with an outer diameter approximately equal to the outer diameter of the steel pipe cylindrical structure and a thickness approximately equal to the diameter of the first steel pipe. It has multiple elongated holes along its circumference that match the extensions of the second steel pipe. The construction step of the steel pipe cylindrical structure further includes: after the steel pipe cylindrical structure is vibrated to the designed depth, the concrete cylinder is hoisted above the first steel pipe and the H-beam, so that the extensions of the second steel pipe are inserted into the elongated holes of the concrete cylinder.

[0028] As one embodiment, the construction steps of the steel pipe cylindrical structure more specifically include: installing the replacement assembly onto the second steel pipe; and installing mutually supporting support rods between the second steel pipes. Using a vibratory sinking device, the steel pipe cylindrical structure is driven to the construction position via the replacement assembly and driven to the designed depth of the steel pipe cylindrical structure; the replacement assembly and support rods are removed; and then the concrete cylinder is hoisted above the first steel pipe and the I-beam, so that the extension of the second steel pipe is inserted into the elongated hole of the concrete cylinder.

[0029] As one embodiment, the construction method of the dock further includes: backfilling inside each steel pipe cylindrical structure to form a first backfill section. In the second backfill section, between two adjacent steel pipe cylindrical structures and inside the sheet piles, cement mixing piles or jet grouting piles are used to construct a water-stop curtain.

[0030] As one embodiment, the surface layer construction step further includes: installing a precast slab on top of the steel pipe cylindrical structure, with a second baffle extending longitudinally downwards on the inner side of the precast slab. A stop block is installed above the second baffle, and a culvert is installed above the precast slab and outside the stop block, providing restraint. Backfilling is performed above the precast slab and outside the culvert to form a third backfill section approximately the same height as the culvert. The surface layer construction is then carried out above the culvert and the third backfill section to complete the dock wall construction.

[0031] In one embodiment, the first baffle is located on the outer wall of the concrete cylinder and is at the same height as the concrete cylinder; the two are integrally formed; the first baffle is close to the inner side of the dock, and the steel sheet pile is close to the outer side of the dock.

[0032] In one embodiment, the upper part of the steel pipe cylindrical structure is provided with a cross beam, which is connected to the surface layer.

[0033] Compared with the prior art, the beneficial effects of this application are as follows:

[0034] The dock wall structure provided in at least one embodiment of this application mostly uses prefabricated components, and construction can be carried out quickly once the on-site construction conditions are met, greatly reducing the construction cycle.

[0035] The dock wall structure provided in at least one embodiment of this application utilizes steel pipes and I-beams to form a large-diameter cylindrical structure, which has good overall structure integrity and can effectively overcome the problem of unclear state after the existing steel cylindrical structure is installed.

[0036] The dock wall structure provided in at least one embodiment of this application uses a concrete cylinder on its upper part, which can effectively reduce the amount of steel used and reduce construction costs through calculation. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of a dock structure for one implementation method;

[0038] Figure 2 This is a perspective view of a steel pipe cylindrical structure according to one embodiment;

[0039] Figure 3 This is an enlarged view of a steel pipe cylindrical structure according to one embodiment;

[0040] Figure 4 This is a perspective view of a steel pipe cylindrical structure according to one embodiment;

[0041] Figure 5 This is a schematic diagram of a steel pipe cylindrical structure and a first baffle in one embodiment;

[0042] Figure 6 yes Figure 5 Side view;

[0043] Figure 7 This is a top view schematic diagram of a dock wall structure in one implementation method;

[0044] Figure 8 This is a side view schematic diagram of a dock wall structure according to one implementation method;

[0045] Figure 9 This is a front view schematic diagram of a dock wall structure in one implementation method;

[0046] Figure 10 This is a schematic diagram of a precast slab as one implementation method;

[0047] Figure 11 This is a schematic diagram of the construction of a steel pipe cylindrical structure in one embodiment;

[0048] Numbered in the diagram: 1. Steel pipe cylindrical structure, 101 First steel pipe, 102 I-beam, 1021 First flange, 1022 Second flange, 1023 Web, 103 Second steel pipe, 1031 Extension, 104 Concrete cylinder, 1041 Long hole, 105 Plug, 106 Cross beam; 2. First baffle, 3. Post-pouring strip, 401 First backfill section, 402 Second backfill section, 5. Steel sheet pile, 6. Water-stop curtain, 7. Precast slab, 701 First precast slab, 702 Second precast slab, 703 Second baffle, 8. Block, 9. Culvert, 10. Third backfill section, 11. Surface layer, 12. Wheel guard, 13. Dock gate pier, 14. Dock gate, 15. Pump house, 16. Replacement assembly, 17. Support rod. Detailed Implementation

[0049] The technical solutions of this application are described in detail below with reference to specific embodiments. However, it should be understood that, without further description, the elements, structures and features in one embodiment can also be beneficially incorporated into other embodiments.

[0050] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0051] In the description of this application, it should be understood that the directional terms "upper" and "lower" mainly refer to the spatial position of the relevant components, and "inner" and "outer" are mainly relative to the interior and exterior of the dock. The direction closer to the interior of the dock is "inner," and the direction farther away is "outer." In some cases, directional terms are only used for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] like Figure 1 As shown, the first embodiment of this application provides a dock wall structure, which includes multiple steel pipe cylindrical structures 1. As... Figure 2-4As shown, each steel pipe cylindrical structure 1 includes a plurality of first steel pipes 101 and an I-beam 102 connecting two adjacent first steel pipes 101. The plurality of first steel pipes 101 and the plurality of I-beams 102 are arranged in a generally circular steel pipe cylindrical structure 1. The I-beam 102 has a first flange 1021 and a second flange 1022 that are generally parallel to each other, and a web 1023 connecting the first flange 1021 and the second flange 1022. The two ends of the first flange 1021 and the second flange 1022 are respectively connected to the two adjacent first steel pipes 101. The steel pipe cylindrical structure 1 is at least driven into the soil at its lower part, for example, 1 / 3 to 1 / 2 of the overall height of the steel pipe cylindrical structure 1 is located in the soil.

[0054] The steel pipe cylindrical structure 1 is a large-diameter cylindrical structure with an outer diameter of 15-30 mm (e.g., 16 mm, 18 mm, 20 mm, 22 mm, 25 mm, 28 mm, etc.). The diameter of the first steel pipe 101 is 400-600 mm (e.g., 420 mm, 450 mm, 480 mm, 500 mm, 520 mm, 550 mm, 580 mm, etc.). The first steel pipe 101 and the I-beam 102 can be fixedly connected by welding, thereby forming four roughly parallel vertical welds. In this embodiment, the arrangement of the first steel pipe 101 and the steel pipe cylindrical structure 1 forms a double-layer circular structure, which stabilizes the entire steel pipe cylindrical structure 1.

[0055] In another embodiment, the steel pipe cylindrical structure 1 further includes a second steel pipe 103 and a concrete cylinder 104. Wherein:

[0056] like Figure 2 and Figure 3 As shown, the diameter of the second steel pipe 103 is smaller than that of the first steel pipe 101, ranging from 200-300 mm (e.g., 220 mm, 250 mm, 280 mm, etc.), and the number of second steel pipes 103 is less than that of the first steel pipes 101. They are spaced apart on the cylindrical steel pipe structure 1 to connect two adjacent first steel pipes 101, replacing the H-beam 102 at that location. The second steel pipe 103 has an extension 1031 longer than both the first steel pipe 101 and the H-beam 102. The cylindrical steel pipe structure 1 simultaneously has the H-beam 102 and the second steel pipe 103; the centers of the first steel pipe, the second steel pipe, and the H-beam (web) are located on the same circumference of the cylindrical steel pipe structure 1.

[0057] like Figure 4As shown, the concrete cylinder 104 is annular, with an outer diameter approximately equal to the outer diameter of the steel pipe cylinder structure 1, and a thickness approximately equal to the diameter of the first steel pipe 101. It has multiple elongated holes 1041 along its circumference that match the extensions 1031 of the second steel pipe; these holes can be through holes. The extensions 1031 of the second steel pipe are inserted into the elongated holes 1041 of the concrete cylinder, thereby stably mounting the concrete cylinder 104 above the first steel pipe 101 and the I-beam 102, forming the steel pipe cylinder structure 1.

[0058] When the second steel pipe 103 and the concrete cylinder 104 are provided, the first steel pipe 101 and the I-beam 102 of the steel pipe cylindrical structure 1 are driven into the soil, and the extension 1031 of the second steel pipe and the concrete cylinder 104 are located on the soil surface.

[0059] In this embodiment, the upper and lower parts of the steel pipe cylindrical structure 1 are coaxially arranged and have approximately equal thicknesses. By setting up a concrete cylinder 104, the steel pipe cylindrical structure 1 becomes a combination structure of steel pipe and concrete. With the same overall height, replacing the first steel pipe 101 and the I-beam 102 with the concrete cylinder can save the length of the steel pipe 101 and the I-beam 102, thereby saving metal steel. Under the premise of ensuring the strength of the project, its economy is also improved.

[0060] like Figure 8 and Figure 9 As shown, the bottom of the first steel pipe 101 is provided with a conical plug 105. The upper diameter of the plug 105 is slightly larger than the diameter of the first steel pipe 101, thereby reducing resistance and facilitating the installation of the steel pipe cylindrical structure 1.

[0061] like Figure 5-7 As shown, the upper part of the steel pipe cylindrical structure 1 is provided with a cross beam 106, which connects to the subsequent precast slab 7 to bear the force from above. When the steel pipe cylindrical structure 1 has a second steel pipe 103 and a concrete cylinder 104, the cross beam 106 is located on top of the concrete cylinder 104. The cross beam 106 can be integrally formed with the steel pipe cylindrical structure 1 for convenient transportation and installation.

[0062] like Figure 5-8 As shown, each steel pipe cylindrical structure 1 has a longitudinally protruding first baffle 2; the first baffles 2 of two adjacent steel pipe cylindrical structures 1 are arranged opposite each other, forming a post-cast strip 3 between them. After the dock is drained, cement or concrete can be poured into the post-cast strip 3 to fill and seal it, so that each first baffle 2 and the post-cast strip 3 together form a barrier layer to prevent external water from seeping into the dock. The first baffle 2 can be set on the concrete cylinder 104 at the same height, so it can be integrally formed with the concrete cylinder 104.

[0063] like Figure 7As shown, in the dock wall structure, steel sheet piles 5 are set between two adjacent steel pipe cylindrical structures 1. They are roughly arc-shaped and set on the outer side. The steel sheet piles 5 are driven into the soil and located in the water, with their upper parts protruding above the water surface, and can be used for temporary water stop.

[0064] In the aforementioned dock wall structure, backfill soil is backfilled both inside the steel pipe cylindrical structure 1 and between the outside of the first baffle 2 and the steel sheet pile 5, forming a first backfill section 401 and a second backfill section 402, respectively. Figure 7 As shown, this makes the dock wall structure more stable. Specifically, in the second backfill section 402, a water-stop curtain 6 is also installed between two adjacent steel pipe cylindrical structures 1. This water-stop curtain 6 is close to the steel sheet piles 5 and can be formed in the second backfill section 402 using cement mixing piles or jet grouting pile construction techniques. Together with the barrier layer formed by the aforementioned first baffle 2 and the steel sheet piles 5, it further improves the water-stopping effect of the dock wall structure.

[0065] like Figure 7-10 As shown, a precast slab 7 is laid on top of the steel pipe cylindrical structure 1. When the diameter of the steel pipe cylindrical structure 1 is too large, the precast slab 7 can be divided into a first precast slab 701 on the inner side and a second precast slab 702 on the outer side, which are spliced ​​together as a whole. A second baffle 703 is provided on the inner side of the first precast slab 701. The second baffle 703 extends longitudinally downward and is approximately parallel to the axial direction of the steel pipe cylindrical structure 1, and is used to protect the upper part of the steel pipe cylindrical structure 1.

[0066] Furthermore, such as Figure 9 As shown, a stop block 8 and a culvert 9 are provided above the precast slab 7. The stop block 8 is located above the second baffle 703 and is used to limit the culvert 9. The culvert 9 can be any type of culvert in the prior art, preferably rectangular, and is mainly used for laying electrical wires, water pipes, etc. Backfilling is carried out above the precast slab 7 and outside the culvert 9 to form a third backfill section 10 that is approximately the same height as the culvert 9. A surface layer 11 is laid above the culvert 9 and the third backfill section 10 to form the surface of the dock wall structure. The inner side of the surface layer 11 is provided with a protruding wheel guard 12 to prevent people or vehicles from falling off the surface layer 11.

[0067] The second embodiment of this application provides a dock, such as Figure 1 As shown, it includes the dock wall structure described in any of the preceding embodiments. The dock wall structure is connected to two dock gate piers 13, and a dock gate 14 is provided between the dock gate piers 13. A pump room 15 may also be provided at the dock gate piers 13 for pumping and draining water in the dock.

[0068] The third embodiment of this application provides a method for constructing a shipyard, comprising the following steps:

[0069] (1) Assembly of the steel pipe cylindrical structure: The assembly of the steel pipe cylindrical structure 1 includes a plurality of first steel pipes 101 and an I-beam 102 connecting two adjacent first steel pipes 101. The plurality of first steel pipes 101 and the plurality of I-beams 102 are arranged in a generally circular steel pipe cylindrical structure 1. The I-beam 102 has a first flange 1021 and a second flange 1022 that are generally parallel to each other, and a web 1023 connecting the first flange 1021 and the second flange 1022. The two ends of the first flange 1021 and the second flange 1022 are respectively connected to the two adjacent first steel pipes 101.

[0070] The assembly of the aforementioned steel pipe cylindrical structure can be completed in the factory through welding and other methods, and then transported to the construction site for installation. Therefore, its construction is simpler, greatly facilitating subsequent installation.

[0071] (2) Construction of steel pipe cylindrical structure

[0072] Install the replacement assembly 16 on the steel pipe cylindrical structure 1; mark the construction position of the steel pipe cylindrical structure 1; use a vibratory sinking device (e.g., a vibratory hammer set) to drive the steel pipe cylindrical structure 1 to the construction position through the replacement assembly 16, and drive it to the designed depth of the steel pipe cylindrical structure 1; remove the replacement assembly. Then drive the next section of the steel pipe cylindrical structure 1, so that the first baffle 2 between two adjacent sections of the steel pipe cylindrical structure 1 is set opposite to each other; repeat the above steps to complete the construction of the steel pipe cylindrical structure.

[0073] (3) Steel sheet pile construction:

[0074] Steel sheet piles 5 are driven between two adjacent steel pipe cylindrical structures 1, on the outer side of the dock, with their bottoms inserted into the soil and their tops protruding above the water surface; they are used for temporary water stop between the two adjacent steel pipe cylindrical structures 1.

[0075] (4) Construction of the dock gate structure

[0076] The foundation of the dock gate pit can be treated first using DCM cement mixing piles, followed by the filling of a crushed stone cushion layer. A caisson is used as the dock gate structure, and the prefabricated caisson is transported to the dock entrance to complete the installation of the dock gate structure. The dock gate structure includes two dock gate piers 13, with the dock gate 14 between the piers 13. A pump house 15 is also installed at the dock gate piers 13 for pumping and drainage in the dock. The construction of the dock gate structure is a relatively mature construction method in this field, and some solutions in the prior art can be used to construct the dock gate structure of this application.

[0077] The first and last steel pipe cylindrical structures are respectively connected to the two dock gate piers 13; that is, the beginning and end of the dock wall structure are respectively connected to the two dock gate piers 13 to form a circular dock, such as... Figure 1 As shown.

[0078] (5) Dock wall connection

[0079] The water in the dock is drained, steel bars are tied and formwork is erected between the two opposing first baffles 2, and concrete is poured to fill the post-cast strip. Soil is backfilled inside the steel pipe cylindrical structure 1 to form the first backfill section 401; soil is backfilled between the outside of the first baffle 2 and the inside of the steel sheet pile 5 to form the second backfill section 402.

[0080] (6) Construction of water-stop curtain

[0081] In the second backfill section 402, between two adjacent steel pipe cylindrical structures 1, a water-stop curtain 6 is formed by using cement mixing piles or jet grouting piles.

[0082] (7) Construction of the upper part of the dock wall

[0083] A precast slab 7 is installed on top of the steel pipe cylindrical structure 1, with the second baffle 703 of the precast slab 7 facing inward. A stop block 8 is installed above the second baffle 703, and a culvert 9 is installed on the precast slab 7, outside the stop block 8, for limiting its position. Backfilling is carried out on the precast slab 7, outside the culvert 9, to form a third backfill section 10. The surface layer 11 is then constructed above the culvert 9 and the third backfill section 10 to complete the dock wall construction.

[0084] The above steps are merely descriptive and their order can be adjusted according to actual needs during construction. Therefore, the order of these steps does not constitute an absolute limitation on this application.

[0085] In one embodiment, during the assembly of the steel pipe cylindrical structure, the steel pipe cylindrical structure 1 further includes a second steel pipe 103 and a concrete cylinder 104. The second steel pipes 103 have a smaller diameter and fewer numbers than the first steel pipes 101, and are spaced apart on the steel pipe cylindrical structure 1 to connect two adjacent first steel pipes 101, replacing the I-beams 102 at that location. The second steel pipes 103 have extensions 1031 longer than both the first steel pipes 101 and the I-beams 102. The steel pipe cylindrical structure 1 simultaneously includes I-beams 102 and second steel pipes 103. The concrete cylinder 104 is annular, with an outer diameter approximately equal to the outer diameter of the steel pipe cylindrical structure 1, and a thickness approximately equal to the diameter of the first steel pipes 101; it has multiple elongated holes 1041 along its circumference that match the extensions 1031 of the second steel pipes. The construction steps of the steel pipe cylindrical structure also include: the replacement assembly 16 is installed on the second steel pipe 103; support rods 17 are installed between the second steel pipes 103 for mutual support between the second steel pipes 103 during installation (e.g., during installation). Figure 11(As shown). After the steel pipe cylindrical structure 1 is vibrated to the design depth, the replacement assembly 16 and support rod 17 are removed; then the concrete cylinder 104 is hoisted above the first steel pipe 101 and the I-beam 102, so that the extension 1031 of the second steel pipe is inserted into the elongated hole 1041 of the concrete cylinder.

[0086] The steel pipe cylindrical structure 1 may also include any technical solution in the first embodiment, which will not be elaborated here.

[0087] The described embodiments are merely preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application should fall within the protection scope defined by the claims of this application.

Claims

1. A method for constructing a shipyard, characterized in that, Includes the following steps: Assembly of the steel pipe cylindrical structure: The assembled steel pipe cylindrical structure is cylindrical, with multiple first steel pipes and I-beams connecting two adjacent first steel pipes on its circumference; wherein, the I-beams have two parallel flanges and webs that connect the two flanges respectively, and the two ends of each flange are connected to the two adjacent first steel pipes respectively. Construction of the steel pipe cylindrical structure: Mark the construction position of the steel pipe cylindrical structure; use a vibratory sinking device to drive the steel pipe cylindrical structure to the construction position and drive it to the design depth of the steel pipe cylindrical structure; then drive the next steel pipe cylindrical structure, so that the first baffles of the two adjacent steel pipe cylindrical structures are set opposite each other, forming a post-pouring strip between them; repeat the above steps to complete the construction of the steel pipe cylindrical structure. Sheet pile construction: On the outer side of the dock, steel sheet piles are driven between two adjacent steel pipe cylindrical structures; the bottom of the steel sheet pile is inserted into the soil, and the upper part of the steel sheet pile is exposed above the water surface. Construction of the dock gate structure: The dock gate structure includes two dock gate piers; two steel pipe cylindrical structures at the bow and stern are respectively connected to the two dock gate piers to form a closed dock; Dock wall connection: Drain the water in the dock and pour the post-cast strip between the two opposing first baffles; backfill between the first baffles and the sheet piles to form the second backfill section; as well as, Surface layer construction: The surface layer is constructed above the steel pipe cylindrical structure, above the first baffle, and above the second backfill section; In the assembly step of the steel pipe cylindrical structure, the steel pipe cylindrical structure further includes a second steel pipe and a concrete cylinder. The diameter of the second steel pipe is smaller than that of the first steel pipe, the number of second steel pipes is less than that of the first steel pipes, and they are spaced apart on the steel pipe cylindrical structure to connect two adjacent first steel pipes, replacing the I-beams at that location. The second steel pipe has an extension longer than the first steel pipe. The concrete cylinder is annular, with an outer diameter approximately equal to the outer diameter of the steel pipe cylindrical structure and a thickness approximately equal to the diameter of the first steel pipe. It has multiple elongated holes along its circumference that match the extensions of the second steel pipes. The construction step of the steel pipe cylindrical structure further includes: after the steel pipe cylindrical structure is vibrated to the design depth, the concrete cylinder is hoisted above the first steel pipe, so that the extensions of the second steel pipes are inserted into the elongated holes of the concrete cylinder.

2. The construction method of the shipyard according to claim 1, characterized in that, The construction steps of the steel pipe cylindrical structure more specifically include: marking the construction position of the steel pipe cylindrical structure; installing the replacement assembly on the top of the steel pipe cylindrical structure, using a vibratory sinking device to drive the steel pipe cylindrical structure to the construction position through the replacement assembly, and vibrating to the designed depth of the steel pipe cylindrical structure; removing the replacement assembly; then driving the next steel pipe cylindrical structure, so that the first baffle between two adjacent steel pipe cylindrical structures is set opposite to each other; repeating the above steps to complete the construction of the steel pipe cylindrical structure.

3. The method for constructing a shipyard according to claim 1, characterized in that, The construction steps of the steel pipe cylindrical structure more specifically include: installing the replacement assembly on the second steel pipe; installing mutually supporting support rods between the second steel pipes; using a vibratory sinking device to drive the steel pipe cylindrical structure to the construction position through the replacement assembly, and vibrating it to the designed depth of the steel pipe cylindrical structure; removing the replacement assembly and support rods; and then hoisting the concrete cylinder above the first steel pipe and the I-beam, so that the extension of the second steel pipe is inserted into the elongated hole of the concrete cylinder.

4. The method for constructing a shipyard according to any one of claims 1-3, characterized in that, Also includes: Backfilling is carried out inside each steel pipe cylindrical structure to form the first backfill section.

5. The method for constructing a shipyard according to claim 4, characterized in that, In the second backfill section, between two adjacent steel pipe cylindrical structures and inside the steel sheet piles, cement mixing piles or jet grouting piles are used to form a water-stop curtain.

6. The method for constructing a shipyard according to any one of claims 1-3, characterized in that, The surface layer construction steps also include: installing a precast slab on the top of the steel pipe cylindrical structure, with a second baffle extending longitudinally downward on the inner side of the precast slab; installing a stop block above the second baffle, and installing a culvert above the precast slab and outside the stop block for limiting installation; backfilling above the precast slab and outside the culvert to form a third backfill section at the same height as the culvert; and carrying out the surface layer construction above the culvert and the third backfill section to complete the dock wall construction.

7. The method for constructing a shipyard according to claim 1 or 3, characterized in that, The first baffle is located on the outer wall of the concrete cylinder and is at the same height as the concrete cylinder; the two are integrally formed; the first baffle is close to the inner side of the dock.

8. The method for constructing a shipyard according to any one of claims 1-3, characterized in that, The upper part of the steel pipe cylindrical structure is provided with a cross beam connecting the surface layer.

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