Fabricated low pile cap structure and construction method thereof

Abstract

The invention relates to an assembled low pile cap structure and a construction method thereof, and relates to the field of port wharf engineering. The structure comprises a pile foundation, an upper hollow structure, a top panel and a leveling cushion layer. The pile foundation is embedded into a soft soil foundation on the outer side of a wharf, the upper permeable structure is arranged above the pile foundation, and holes are reserved in the bottom according to the pile foundation; a leveling cushion layer is arranged between the pile foundation and the upper transparent structure; and the top panel is arranged above the pile foundation. The construction method comprises the steps that the upper permeable structure is of an integrated assembly type structure and is machined and manufactured in a prefabrication factory; a pile foundation is inserted, a leveling cushion layer is arranged, corresponding reserved holes of the upper permeable structure are connected with the pile foundation, and grouting anchoring is carried out; and a top panel is arranged above the upper permeable structure, and the low pile cap structure is assembled. The foundation piles serve as stress foundations, the upper portion is of an assembly type permeable structure, durability is good, environment friendliness is achieved, construction is easy and rapid, and the foundation pile can be widely applied to the inland river excavation type harbor basin wharf.

Description

Technical Field

[0001] The invention belongs to the field of port and wharf engineering, and in particular relates to an assembled low-pile cap structure and a construction method thereof. Background Art

[0002] At present, the common dock structures in inland river docks mainly include gravity structure, high pile structure, low pile foundation structure and sheet pile structure. Since most inland river docks are located in excavated harbors, the dock structure often adopts the structural scheme that can be constructed on dry land commonly used in inland river docks to meet the requirements of safety, economy and convenient construction.

[0003] At present, most of the excavated harbor docks are cast on site. For example, a Chinese patent (publication date: January 21, 2022) discloses an improved dock combination structure, including a sheet pile dock structure and a low pile foundation structure. The sheet pile dock structure includes a cast-in-place ground-connected wall, a cast-in-place breast wall, etc. This structure is suitable for excavated harbors, areas with poor geological conditions, thick and deep soft layers, etc. The on-site casting of the dock structure has high requirements on construction technology and quality, which is easy to cause pollution to the surrounding environment and is not green and environmentally friendly.

[0004] A Chinese patent (publication date: December 10, 2019) discloses an assembled low-pile cap ecological revetment structure, including a prefabricated L-shaped retaining wall, a prefabricated pile foundation, a prefabricated L-shaped retaining wall bottom plate, reserved trumpet-shaped prefabricated pile holes, a Binger net box and an ecological bag, which has the characteristics of factory production, fast construction, less resource waste, and green environmental protection. It is suitable for soft soil foundations, places with high ecological environment requirements, and tight construction periods. However, although the structure adopts an assembled type, it is a revetment structure and is not suitable for the complex opening design of the excavated port dock. The ship berthing capacity provided is limited and the protection capacity is insufficient. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an assembled low-pile foundation structure and a construction method thereof, which adopts foundation piles as the force-bearing foundation and the upper part is an assembled air-permeable structure. The dock has good durability and is simple and fast to construct. It can be widely used in inland river dredged harbor docks, and is in line with the concept of energy conservation, green environmental protection and sustainable development of inland port areas.

[0006] An assembled low pile cap structure includes a pile foundation, an upper hollow structure, a top panel, and a leveling cushion layer;

[0007] The pile foundation is embedded in the soft soil foundation outside the wharf, the upper hollow structure is arranged above the pile foundation, and the bottom is reserved with openings according to the pile foundation arrangement, and is assembled with the pile foundation through grouting anchoring; a leveling cushion layer is arranged between the pile foundation and the upper hollow structure; the top panel is arranged above the pile foundation.

[0008] Furthermore, the upper hollow structure includes a cap, a plurality of columns, a vertical wall, and a connecting beam;

[0009] The cap is horizontally arranged above the pile foundation, with one long side connected to the wharf; the tops of the plurality of columns are flush with the top of the front line of the wharf, and are arranged at intervals above the long side of the cap away from the wharf; the vertical wall is arranged behind the columns and above the cap close to the wharf;

[0010] The connecting beams include a plurality of column connecting beams and a plurality of vertical wall connecting beams; the column connecting beams are arranged in two groups parallel to the long side of the pedestal, one group is arranged in the middle of the column to connect the columns; the other group is arranged at the top of the column and is the same length as the long side of the pedestal; the plurality of vertical wall connecting beams are arranged in the middle of the column and parallel to the short side of the pedestal to connect the column to the vertical wall.

[0011] Furthermore, the top panel includes a rail, a groove, and a buckle. The rail is arranged on the top of the upper hollow structure, the buckle is arranged in the middle position of the top of the upper hollow structure, and the groove is arranged above the vertical wall.

[0012] Furthermore, based on the bearing capacity of the assembled low-pile cap structure and various structures, the top panel is used to also serve as a front track beam for ships to dock.

[0013] Furthermore, a reserved groove is provided above the foundation according to the shape and position of the column and the vertical wall, and a reserved opening is provided below the foundation according to the shape and position of the pile foundation.

[0014] Furthermore, the top of the vertical wall is widened, and fender facilities are provided at the front edges of the vertical columns and the vertical column connecting beams.

[0015] Furthermore, the pile foundation includes a plurality of straight piles, which are arranged at intervals on a straight line and in parallel in a plurality of rows and embedded in a soft soil foundation.

[0016] A construction method of an assembled low pile cap structure comprises the following steps:

[0017] S1. The upper hollow structure is divided into two parts and adopts an integrated assembled structure, which is processed and manufactured in a prefabrication plant. One part is the upper groove and lower opening reserved for the cap, and the other part is the columns, walls and connecting beams of the upper hollow structure, which are prefabricated as a whole. The cap and the prefabricated columns, walls and connecting beams are transported to the construction site;

[0018] S2, hoisting and installing the integrally prefabricated columns, vertical walls and connecting beams to the reserved grooves of the cap, using grouting anchoring to complete the assembly of the upper hollow structure;

[0019] S3, inserting the pile foundation into the deep soft soil, detecting the elevation, slope and flatness of the pile foundation, setting a leveling cushion, connecting the upper air-permeable structure with the pile foundation through the reserved openings, and anchoring with grouting;

[0020] S4. The top panel is arranged above the upper hollow structure to complete the assembly of the low pile cap structure.

[0021] Compared with the prior art, the advantages and effects of the technical solution of this application are as follows:

[0022] 1. The present invention provides an assembled low-pile foundation structure, which is mainly used for inland river excavated harbor docks and can be applied to areas with thick soft soil in harbors. It can be assembled and installed on site through a reliable connection method, which reduces the environmental impact of construction on the project area, improves the construction speed, and has controllable costs, advanced technology, and is green and environmentally friendly.

[0023] 2. The construction method of the assembled low pile cap structure provided by the present invention pre-fabricates each structure in a factory, and reserves coupling grooves and openings for on-site assembly, and has high connection strength, stable structure and short construction period.

[0024] 3. The assembled low pile cap structure provided by the present invention adopts a hollow structure on the upper part, which has the advantage of saving materials while ensuring structural strength.

[0025] 4. The assembled low pile cap structure provided by the present invention has a top panel with a structure such as a rail groove, and can also serve as a front track beam for ship docking, which can meet the requirements of berthing, retaining and track load.

[0026] The above is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0027] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0029] Figure 1 It is a schematic diagram of a single assembled low pile cap structure according to an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of various structures during the assembly process of a single assembled low pile cap structure according to one embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of a single berth of a wharf composed of a plurality of assembled low pile cap structures according to an embodiment of the present invention;

[0032] Figure numerals: 1. Pile foundation; 2. Upper hollow structure; 3. Top panel; 4. Leveling cushion; 5. Cap; 6. Column; 7. Vertical wall; 8. Connecting beam; 9. Fender facility; 10. Rail; 11. Groove; 12. Lock. DETAILED DESCRIPTION

[0033] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all the embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment. It should be understood that "one embodiment" or "this embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "one embodiment" or "this embodiment" appearing in various places throughout the specification may not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0034] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0035] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association relationship between associated objects, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0037] Example 1

[0038] like Figure 1 The figure shows a schematic diagram of a single assembled low pile cap structure, which is applicable to an assembled low pile cap structure, including a pile foundation 1, an upper hollow structure 2, a top panel 3, and a leveling cushion 4;

[0039] The pile foundation 1 is embedded in the soft soil foundation outside the wharf and serves as the load-bearing foundation of the whole structure;

[0040] The upper hollow structure 2 is arranged above the pile foundation 1, and a reserved opening is arranged at the bottom according to the arrangement of the pile foundation 1, and is assembled with the pile foundation 1 by grouting anchoring; a leveling cushion layer 4 is arranged between the pile foundation 1 and the upper hollow structure 2, which is used to adjust the uneven settlement of the pile foundation 1;

[0041] The top panel 3 is arranged above the pile foundation 1 and can provide berthing for ships;

[0042] The structure adopts a hollow structure, which saves materials and has a structural strength that can meet the track load requirements.

[0043] Furthermore, the upper hollow structure 2 includes a base 5, a plurality of columns 6, a vertical wall 7, and a connecting beam 8;

[0044] The cap 5 is horizontally arranged above the pile foundation 1, with one long side connected to the wharf; the tops of the plurality of columns are flush with the top of the front line of the wharf, and are arranged at intervals above the long side of the cap 5 away from the wharf;

[0045] The vertical wall 7 is arranged behind the vertical column and above the cap 5 near the wharf to realize the function of retaining soil;

[0046] The connecting beams 8 include multiple column 6 connecting beams 8 and multiple wall 7 connecting beams 8; the column connecting beams 8 are arranged in two groups parallel to the long sides of the pedestal 5, one group is arranged in the middle of the column to connect the columns; the other group is arranged at the top of the column and is the same length as the long side of the pedestal 5; multiple wall 7 connecting beams 8 are arranged in the middle of the column and parallel to the short sides of the pedestal 5 to connect the column with the wall 7.

[0047] Furthermore, the top panel 3 includes a steel rail 10, a groove 11, and a buckle 12. The steel rail 10 is arranged on the top of the upper hollow structure 2, the buckle 12 is arranged in the middle position of the top of the upper hollow structure 2, and the groove 11 is arranged above the vertical wall 7.

[0048] Furthermore, a reserved groove is provided above the cap 5 according to the shape and position of the column and the vertical wall 7, and a reserved opening is provided below the cap 5 according to the shape and position of the pile foundation.

[0049] The reserved groove and the reserved opening of the support 5 meet the installation deviation requirements;

[0050] Furthermore, the top panel 3 is used to serve as the front track beam for ships to dock, which can meet the requirements of berthing. The hollow structure below can firmly support the top panel 3 to bear the heavy load generated during cargo loading and unloading, while maintaining the stability and durability of the dock, thereby improving the efficiency of cargo loading and unloading.

[0051] Furthermore, the top of the vertical wall 7 is widened, and fender facilities 9 are provided at the front edges of the vertical columns and the vertical column connecting beams 8 .

[0052] The spacing between the fender facilities 9 is set according to the "General Design Specifications for Ports", and the spacing between the columns 6 is determined in combination with the spacing between the fender facilities 9.

[0053] Furthermore, the pile foundation 1 includes a plurality of straight piles, which are arranged at intervals on a straight line and are arranged in three parallel rows embedded in the soft soil foundation, one row is arranged below the column 6 , and the other two rows are arranged on both sides below the vertical wall 7 .

[0054] Technical effect of this embodiment: The lower part of the structure uses pile foundation as the structural force foundation, and the upper pedestal, columns and walls adopt an integrated assembled structure, which optimizes the structural layout and berthing plan of the inland dredged port terminal, and can significantly improve the operating efficiency of the port.

[0055] Example 2

[0056] This embodiment relates to an integrated wharf structure and a ship berthing method formed by combining the individual assembled low pile cap structures in the above embodiments, such as Figure 3 As shown, it is a schematic diagram of a single berth of a wharf composed of multiple assembled low pile cap structures;

[0057] A single assembled low pile cap structure includes a pile foundation 1, an upper hollow structure 2, a top panel 3, and a leveling cushion 4;

[0058] The pile foundation 1 is embedded in the soft soil foundation outside the wharf and serves as the load-bearing foundation of the whole structure;

[0059] The upper hollow structure 2 is arranged above the pile foundation 1, and a reserved opening is arranged at the bottom according to the arrangement of the pile foundation 1, and is assembled with the pile foundation 1 by grouting anchoring; a leveling cushion layer 4 is arranged between the pile foundation 1 and the upper hollow structure 2, which is used to adjust the uneven settlement of the pile foundation 1;

[0060] The top panel 3 is disposed above the pile foundation 1 and can provide berthing for ships.

[0061] The individual assembled low pile cap structures are closely arranged in parallel on the outside of the wharf, connected by grouting anchors, and assembled on the outside of the wharf.

[0062] The ship berthing method is as follows:

[0063] When a ship docks at the front track beam, precise navigation and control are required to ensure that the ship is steadily and accurately aligned with the track beam.

[0064] The vessel slowly approaches the front track beam and is fixed to the track beam using the mooring equipment, which is fixed by the buckle 12. Ensure that the connection between the vessel and the track beam is firm to prevent sliding or displacement.

[0065] In the waters in front of the dock, ships are carrying out loading and unloading operations.

[0066] Example 3

[0067] This embodiment relates to a construction method for integrally constructing an assembled low pile cap structure into a wharf structure in the above embodiment, comprising the following steps:

[0068] S1. The upper hollow structure 2 is divided into two parts and adopts an integrated assembled structure, which is processed and manufactured in a prefabrication plant. One part is the upper groove and lower opening reserved for the cap 5, and the other part is the columns 6, vertical walls 7 and connecting beams 8 of the upper hollow structure 2. The cap 5 and the integrally prefabricated columns 6, vertical walls 7 and connecting beams 8 are transported to the construction site;

[0069] S2, hoist and install the prefabricated columns 6, walls 7 and connecting beams 8 to the reserved grooves of the cap 5, use grouting anchoring to complete the assembly of the upper hollow structure 2. Figure 2 As shown;

[0070] S3, inserting the pile foundation 1 into the deep soft soil, detecting the elevation, slope and flatness of the pile foundation 1, setting a leveling cushion 4, providing a stable and flat working surface, connecting the upper air-permeable structure 2 with the pile foundation 1 corresponding to the reserved opening, and anchoring with grouting;

[0071] S4, the top panel 3 is anchored on the upper hollow structure 2 by high-strength bolts combined with grouting, completing the assembly of the low pile cap 5 structure;

[0072] S5. Complete the construction of multiple assembled low-pile foundation structures to form a complete inland river dredged harbor wharf.

[0073] Technical effect of this embodiment: The construction method of the assembled low-pile foundation structure in this embodiment, except for the nodes of the assembly of each part, speeds up the construction speed, reduces the impact of the construction on the surrounding environment, greatly improves the standardization level of prefabricated components of inland river terminals, and can be widely used.

[0074] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Within the spirit and principle of the present invention, any change, modification, replacement, integration and parameter change of these embodiments by conventional substitution or capable of achieving the same function without departing from the principle and spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. An assembled low pile cap structure, characterized in that: It comprises a pile foundation (1), an upper hollow structure (2), a top panel (3), and a leveling cushion layer (4); The pile foundation (1) is embedded in the soft soil foundation outside the wharf; the upper hollow structure (2) is arranged above the pile foundation (1); a hole is reserved at the bottom according to the arrangement of the pile foundation (1); and the structure is assembled with the pile foundation (1) by grouting and anchoring; a leveling cushion layer (4) is arranged between the pile foundation (1) and the upper hollow structure (2); and the top panel (3) is arranged above the pile foundation (1).

2. The assembled low pile cap structure according to claim 1, characterized in that: The upper hollow structure (2) comprises a base (5), a plurality of columns (6), a vertical wall (7), and a connecting beam (8); The cap (5) is horizontally arranged above the pile foundation (1), with one long side connected to the wharf; the tops of the plurality of columns are flush with the top of the front line of the wharf, and are arranged at intervals above the long side of the cap (5) away from the wharf; the vertical wall (7) is arranged behind the columns and above the cap (5) close to the wharf; The connecting beams (8) include a plurality of column (6) connecting beams (8) and a plurality of wall (7) connecting beams (8); the column connecting beams (8) are arranged in two groups parallel to the long sides of the pedestal (5), one group is arranged in the middle of the column to connect the columns; the other group is arranged at the top of the column and is equal in length to the long sides of the pedestal (5); the plurality of wall (7) connecting beams (8) are arranged in the middle of the column and parallel to the short sides of the pedestal (5) to connect the column to the wall (7).

3. The assembled low pile cap structure according to claim 1, characterized in that: The top panel (3) comprises a steel rail (10), a groove (11), and a buckle (12); the steel rail (10) is arranged on the top of the upper hollow structure (2); the buckle (12) is arranged at the middle position of the top of the upper hollow structure (2); and the groove (11) is arranged above the vertical wall (7).

4. The assembled low pile cap structure according to claim 1 or 3, characterized in that: Based on the bearing capacity of the assembled low-pile cap structure and various structures, the top panel (3) is used to also serve as a front track beam for ships to dock.

5. The assembled low pile cap structure according to any one of claims 1 to 3, characterized in that: A reserved groove is arranged above the capping platform (5) according to the shape and position of the column and the vertical wall (7), and a reserved opening is arranged below the capping platform (5) according to the shape and position of the pile foundation.

6. The assembled low pile cap structure according to claim 1 or 2, characterized in that: The top of the vertical wall (7) is widened, and fender facilities (9) are also provided at the front edges of the vertical columns and the vertical column connecting beams (8).

7. The assembled low pile cap structure according to claim 1, characterized in that: The pile foundation (1) comprises a plurality of straight piles, which are arranged at intervals on a straight line and in parallel in a plurality of rows and embedded in a soft soil foundation.

8. The construction method of the assembled low pile cap structure according to any one of claims 1 to 7 comprises the following steps: S1. The upper hollow structure (2) is divided into two parts and adopts an integrated assembled structure, which is processed and manufactured in a prefabrication plant. One part is the upper groove and the lower opening reserved for the pedestal (5), and the other part is the columns, vertical walls (7) and connecting beams (8) of the upper hollow structure (2) which are prefabricated as a whole. The pedestal (5) and the prefabricated columns, vertical walls (7) and connecting beams (8) are transported to the construction site; S2, hoisting and installing the integrally prefabricated columns, vertical walls (7) and connecting beams (8) to the reserved grooves of the cap (5), using grouting anchoring to complete the assembly of the upper hollow structure (2); S3, inserting the pile foundation (1) into the deep soft soil, detecting the elevation, slope and flatness of the pile foundation (1), setting a leveling cushion layer (4), connecting the upper air-permeable structure (2) corresponding to the reserved opening with the pile foundation (1), and anchoring with grouting; S4. The top panel (3) is arranged above the upper hollow structure (2) to complete the assembly of the low pile cap structure.

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