Construction device and construction method for fabricated concrete bearing platform in tidal environment

Abstract

The invention discloses a construction device and method for an assembly type concrete bearing platform in a tidal environment, the construction device comprises prefabricated bottom plates, prefabricated side plates, distribution beams and corbels, the prefabricated bottom plates comprise a first bottom plate and a second bottom plate, the first bottom plate is provided with a through hole for a steel casing to penetrate through, and the second bottom plate is provided with a through hole for a steel casing to penetrate through; the area where the prefabricated bottom plate is located comprises a first area, a second area and a third area which is located between the first area and the second area and used for connecting the first area and the second area, each of the first area and the second area is formed by splicing a plurality of first bottom plates in an array mode, and the third area is formed by splicing a plurality of second bottom plates which are sequentially connected; the distribution beams comprise two transverse distribution beams arranged at intervals and a plurality of longitudinal distribution beams located between the two transverse distribution beams, and a channel used for containing a steel casing is formed between every two adjacent longitudinal distribution beams; and the longitudinal distribution beams are erected on the brackets. The durability and the construction flexibility of the bearing platform construction device can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a construction device and a construction method for an assembled concrete cap in a tidal environment. Background Art

[0002] my country boasts numerous rivers and lakes, and a vast coastline. To overcome the barriers of the ocean and enhance regional cultural exchange and economic development, my country began building its first cross-sea bridge in 1987. Since then, cross-sea bridge construction has accelerated. According to incomplete statistics, my country has built over 35 cross-sea bridges, with over 40 under construction or planned. Building bridges in the sea is challenging, partly due to the complex deep waters and tidal conditions.

[0003] Pile foundations are a common type of deepwater foundation. There are two main methods for constructing high-pile cap foundations in water, both domestically and internationally, including the integral cast-in-place cofferdam method and the integral prefabricated assembly method. The integral cast-in-place cofferdam method typically uses a steel cofferdam as a temporary underwater retaining structure for the cap concrete cast-in-place. The problems with this method are the large one-time investment in the cofferdam steel structure, the difficulty in installation and removal, and the high safety risks during the construction process. While integral prefabricated assembly construction is currently a more advanced construction method, the overall prefabricated components have a large deadweight and place high demands on prefabrication, transportation, and hoisting sites and equipment. The cast-in-place wet joints between the cap and the pile foundation have many cracks, and corrosion protection of the steel bars at the joints is difficult, impacting the durability of the structure. Therefore, improving construction flexibility while improving the durability of the main structure has become a necessity in the current development of bridge engineering. Summary of the Invention

[0004] The present application provides a construction device and a construction method for an assembled concrete foundation in a tidal environment, which can solve the technical problems of low durability of the main structure and low construction flexibility in the prior art.

[0005] In a first aspect, an embodiment of the present application provides a construction device for an assembled concrete foundation in a tidal environment, comprising: a prefabricated bottom plate and a prefabricated side plate arranged around the prefabricated bottom plate to form a casting trough for casting foundation concrete, the prefabricated bottom plate comprises a first bottom plate and a second bottom plate, and a through hole for a steel casing to pass through is provided on the first bottom plate, the area where the prefabricated bottom plate is located comprises a first area, a second area and a third area located between the first area and the second area for connecting the first area and the second area, the first area and the second area are both formed by a plurality of first bottom plates in an array shape The third area is formed by splicing multiple second base plates connected in sequence; a distribution beam located below the prefabricated base plate, the distribution beam comprising two spaced-apart transverse distribution beams and a plurality of longitudinal distribution beams located between the two transverse distribution beams, the plurality of longitudinal distribution beams being arranged parallel and spaced apart along the length direction of the prefabricated base plate, and a channel for placing a steel casing being formed between two adjacent longitudinal distribution beams, the two ends of the plurality of longitudinal distribution beams being respectively fixed to the two transverse distribution beams; a plurality of corbels for connecting the steel casing and the longitudinal distribution beams, the longitudinal distribution beams being mounted on the corbels.

[0006] In combination with the first aspect, in one embodiment, a plurality of steel pipe piles for supporting the transverse distribution beam are provided below the transverse distribution beam, the steel pipe piles are distributed on the outer peripheral sides of the plurality of steel protective pipes, and the tops of the steel pipe piles and the tops of the corbels are located on the same horizontal plane.

[0007] In combination with the first aspect, in one embodiment, the two corbels are provided at opposite ends of the outer wall of each of the steel casings.

[0008] In combination with the first aspect, in one embodiment, a transverse connecting beam is provided between the two transverse distribution beams, longitudinal distribution beams are fixed on both sides of the connecting beam, and the longitudinal distribution beams located on both sides of the connecting beam form multiple spaced vertical offsets.

[0009] In combination with the first aspect, in one embodiment, a plurality of connection systems are provided between the plurality of longitudinal distribution beams.

[0010] In combination with the first aspect, in one embodiment, a counter-pressure corbel is fixed on a side of the prefabricated base plate away from the distribution beam, and one side of the counter-pressure corbel is fixedly connected to the steel casing, and a plurality of the counter-pressure corbels are circumferentially fixedly connected to the outer wall of each steel casing.

[0011] In combination with the first aspect, in one embodiment, the plurality of prefabricated base plates are fixedly connected via wet joints.

[0012] In the second aspect, an embodiment of the present application provides a construction method for an assembled concrete pedestal in a tidal environment, comprising: hoisting a distribution beam on the top of a plurality of corbels; hoisting a plurality of first bottom plates and a plurality of second bottom plates on the distribution beam; pouring filling concrete between the plurality of first bottom plates and between the plurality of first bottom plates and the second bottom plates to form a prefabricated bottom plate, and surrounding a prefabricated side plate on the prefabricated bottom plate to form a casting trough for pouring pedestal concrete; and casting the pedestal in the casting trough.

[0013] In combination with the second aspect, in one embodiment, after the multiple first base plates and second base plates are hoisted on the distribution beam according to the preset corresponding relationship, it also includes: pouring filling concrete between the prefabricated base plate and the steel casing under the condition of low water level during construction; after the filling concrete reaches the preset strength, the counter-pressure corbel used to press the distribution beam is welded to the outer wall of each steel casing.

[0014] In combination with the second aspect, in one embodiment, the casting of the pedestal in the casting trough includes: casting the first layer of pedestal in the casting trough, and after the concrete strength of the first layer of pedestal reaches the design strength, removing the corbels and the prefabricated side panels; symmetrically installing the prefabricated skirt panels, tying the steel bars of the second layer of pedestal and the third layer of pedestal in sequence, and casting the second layer of pedestal and the third layer of pedestal.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present application include: (1) The construction device provided in the embodiment of the present application adopts a pedestal construction shell composed of a prefabricated bottom plate and prefabricated side plates, which can realize the construction of the pedestal in water without a cofferdam, and has a simple structure, is easy to install and dismantle, and is convenient for subsequent installation and construction, thereby improving the accuracy of construction quality and construction flexibility. At the same time, it effectively increases the construction speed, reduces the impact of complex natural environments such as tidal sea conditions, and ensures the appearance and quality of the structure; (2) The construction device provided in the embodiment of the present application uses multiple first base plates and multiple second base plates. By dividing the prefabricated base plate into multiple prefabricated sub-base plates for on-site assembly, the hoisting equipment requirements are not high compared to directly hoisting the entire prefabricated base plate, the overall performance is better and the casting process is avoided; (3) The construction device provided in the embodiment of the present application sets the distribution beam on the corbel fixed to the steel casing, thereby avoiding the connection problem between the pedestal and the pile foundation, greatly reducing the impact of wet joints on the durability of the main structure of the construction device, and reducing the impact of the tidal environment on foundation construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the structure of the construction device provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the construction device provided in an embodiment of the present application after the distribution beam is removed; Figure 3 A schematic diagram of the distribution of transverse pipe piles in the construction device provided in an embodiment of the present application; Figure 4 A schematic diagram of the hoisting of a prefabricated base plate of a construction device provided in an embodiment of the present application; Figure 5 A top view of a portion of the structure of a construction device provided in an embodiment of the present application; Figure 6 A front view of a portion of the structure of a construction device provided in an embodiment of the present application; Figure 7 for Figure 6 A partial enlarged schematic diagram; Figure 8 A side view of a portion of the structure of a construction device provided in an embodiment of the present application; Figure 9 for Figure 8 A partial enlarged schematic diagram; Figure 10 A schematic diagram of the distribution of back-pressure brackets in a partial structure of a construction device provided in an embodiment of the present application; Figure 11 A schematic diagram of the distribution of prefabricated base plates in a partial structure of a construction device provided in an embodiment of the present application; Figure 12 A flowchart of the construction method provided in an embodiment of the present application.

[0018] In the figure: 1. Longitudinal distribution beam; 2. Corbel; 3. Connection system; 4. Steel casing; 5. Steel pipe pile; 6. Precast base plate; 61. First base plate; 62. Second base plate; 7. Counter-pressure corbel; 8. Transverse distribution beam; 9. Precast side plate. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] The present application provides a construction device and a construction method for an assembled concrete foundation in a tidal environment, which can solve the technical problems of low durability of the main structure and low construction flexibility in the prior art.

[0021] Figure 1 A schematic structural diagram of the construction device provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the structure of the construction device provided in the embodiment of the present application after the distribution beam is removed. Figure 1 and Figure 2 The embodiment of the present application provides a construction device for an assembled concrete foundation in a tidal environment, comprising: a prefabricated bottom plate 6 and a prefabricated side plate 9 arranged around the prefabricated bottom plate 6 to form a casting trough for casting foundation concrete, the prefabricated bottom plate 6 comprises a first bottom plate 61 and a second bottom plate 62, and the first bottom plate 61 is provided with a through hole for the steel casing 4 to pass through, the area where the prefabricated bottom plate 6 is located comprises a first area, a second area and a third area located between the first area and the second area for connecting the first area and the second area, the first area and the second area are both formed by a plurality of first bottom plates 61 arranged in an array shape The third area is composed of multiple second base plates 62 connected in sequence; the distribution beam is located below the prefabricated base plate 6, and the distribution beam includes two transverse distribution beams 8 arranged at intervals and multiple longitudinal distribution beams 1 located between the two transverse distribution beams 8. The multiple longitudinal distribution beams 1 are arranged in parallel and at intervals along the length direction of the prefabricated base plate 6, and a channel for placing the steel casing 4 is formed between the adjacent two longitudinal distribution beams 1. The two ends of the multiple longitudinal distribution beams 1 are respectively fixed to the two transverse distribution beams 8; multiple corbels 2 are used to connect the steel casing 4 and the longitudinal distribution beams 1, and the longitudinal distribution beams 1 are erected on the corbels 2.

[0022] Specifically, the prefabricated bottom plate 6 and the prefabricated side plates 9 are arranged to form a casting trough for pouring the foundation concrete. The casting trough serves as the construction shell of the foundation, which can realize the construction of the foundation without cofferdam in water. The structure is simple, and the installation and disassembly are convenient, which facilitates the subsequent installation and construction, improves the accuracy of construction quality and construction flexibility, and effectively improves the construction speed, reduces the impact of complex natural environments such as tidal sea conditions, and ensures the appearance and quality of the structure.

[0023] In the embodiment of the present application, the prefabricated bottom plate 6 and the prefabricated side plates 9 are both made of concrete, and the first bottom plate 61 can be square. The prefabricated bottom plate 6 is divided into three areas. The first area is composed of multiple first bottom plates 61 spliced together in an array to form a stable platform for supporting the pouring of the pedestal concrete. The second area is also composed of multiple first bottom plates 61 spliced together in an array, symmetrically arranged with the first area, and together constitute the main load-bearing part of the prefabricated bottom plate 6. The third area is located between the first area and the second area, and is composed of multiple second bottom plates 62 connected in sequence. It is used to connect the first area and the second area to ensure the continuity and stability of the entire prefabricated bottom plate 6. At the same time, the second bottom plate 62 can also be located at the offset of multiple first bottom plates 61, so that the first bottom plate 61 and the second bottom plate 62 can together form a prefabricated bottom plate 6 with a complete shape.

[0024] The construction device provided in the embodiment of the present application utilizes multiple first base plates 61 and multiple second base plates 62. By dividing the prefabricated base plate 6 into multiple prefabricated sub-base plates for on-site assembly, the construction device requires less lifting equipment than directly lifting the entire prefabricated base plate 6, has better overall performance, and eliminates the need for formwork casting. In other embodiments of the present application, different arrangements of the prefabricated sub-base plates may be configured based on the actual on-site distribution of the pile foundation steel casing 4. This arrangement is not limited to any particular arrangement, as long as the prefabricated base plate 6 is a completed base plate composed of multiple sub-base plates.

[0025] Figure 3 This is a schematic diagram of the distribution of transverse pipe piles in the construction device provided in the embodiment of this application. Figure 3 In the embodiment of the present application, a plurality of steel pipe piles 5 for supporting the transverse distribution beam 8 are arranged below the transverse distribution beam 8. The steel pipe piles 5 are distributed on the outer peripheral side of a plurality of steel protective pipes, and the top of the steel pipe piles 5 and the top of the corbel 2 are located on the same horizontal plane.

[0026] Specifically, the steel pipe piles 5 provide stable support for the transverse distribution beams 8, ensuring the load-bearing capacity of the entire construction device. At the same time, the tops of the steel pipe piles 5 and the tops of the corbels 2 are located at the same horizontal plane. Consequently, the distribution beams erected on top of the steel pipe piles 5 and the corbels 2 are also located at the same horizontal plane, and the prefabricated base plate 6 disposed above the distribution beams is also located at the same horizontal plane, thus ensuring the stability of the entire construction device. In some other embodiments of the present application, the length and number of the longitudinal distribution beams 1, as well as the spacing between adjacent longitudinal distribution beams 1, can be set based on the actual on-site arrangement of the steel casings 4 and the diameter of the steel casings 4.

[0027] Continue to refer Figure 1 and Figure 2 In the embodiment of the present application, two brackets 2 are provided at opposite ends of the outer wall of each steel casing 4 .

[0028] Specifically, since a channel for placing steel casings 4 is formed between two adjacent longitudinal distribution beams 1, multiple steel casings 4 can be placed within this vertical channel. Therefore, the brackets 2 on the outer walls of the steel casings 4 located in the same vertical channel are also located on the same vertical plane. As a result, the same longitudinal distribution beam 1 can be installed, so that the entire distribution beam forms a stable support frame. In some other embodiments of the present application, different numbers of brackets 2 can be set on the outer walls of each steel casing 4 based on actual stability and construction cost requirements, as long as the stability of the distribution beam installation is guaranteed, and this is not limited here.

[0029] Figure 4 This is a schematic diagram of the hoisting of the prefabricated base plate 6 of the construction device provided in the embodiment of the present application. Figure 4 In the embodiment of the present application, a transverse connecting beam is provided between the two transverse distribution beams 8, and longitudinal distribution beams 1 are fixed on both sides of the connecting beam. The longitudinal distribution beams 1 on both sides of the connecting beam form multiple spaced vertical staggers.

[0030] Specifically, due to the complex tidal conditions on site, the arrangement of the pile foundation steel casings 4 may be dispersed and located in multiple vertical channels. In this embodiment, connecting crossbeams are provided to enhance the stability between the longitudinal distribution beams 1 and prevent lateral deformation of the distribution beams during construction. After the first and second base plates 61, 62 are prefabricated, a crane is used to hoist the first and second base plates 61, 62 to the top of the distribution beams according to the pre-set correspondence between the first base plate 61 and the steel casings 4, and the second base plate 62 and the preset areas.

[0031] The construction device provided in the embodiment of the present application sets up the distribution beam on the corbel 2 fixed to the steel casing 4, thereby avoiding the connection problem between the pedestal and the pile foundation, greatly reducing the impact of wet joints on the durability of the main structure of the construction device, and reducing the impact of the tidal environment on foundation construction.

[0032] In the embodiment of the present application, a plurality of connection systems 3 are provided between the plurality of longitudinal distribution beams 1 .

[0033] Figure 5 A top view of a portion of the construction apparatus provided in an embodiment of the present application. Specifically, multiple tie systems 3 can be installed between adjacent longitudinal distribution beams 1 to ensure a secure connection between them and enhance the overall structural stability of the distribution beam. Furthermore, the top projection of the tie systems 3 does not cover the steel casing 4, thereby ensuring the flatness of the precast base plate 6.

[0034] Figure 6 A front view of a partial structure of the construction device provided in an embodiment of the present application. Figure 7 for Figure 6 A partial enlarged schematic diagram is shown in the figure. Figure 8 A side view of a partial structure of the construction device provided in an embodiment of the present application. Figure 9 for Figure 8 A partial enlarged schematic diagram is shown in the figure. Figure 10 Schematic diagram of the distribution of back-pressure corbels in a partial structure of the construction device provided in an embodiment of the present application. Figure 11 Schematic diagram of the distribution of prefabricated base plates in a partial structure of the construction device provided in an embodiment of the present application.

[0035] With reference to the above-mentioned drawings, in the embodiment of the present application, a back-pressure corbel 7 is fixed to the side of the prefabricated base plate 6 away from the distribution beam, and one side of the back-pressure corbel 7 is fixedly connected to the steel casing 4, and a plurality of back-pressure corbels 7 are circumferentially fixedly connected to the outer wall of each steel casing 4.

[0036] Specifically, the counter-pressure corbel 7 can be L-shaped or inverted L-shaped, with one side of the counter-pressure corbel 7 fixedly connected to the outer wall of the steel casing 4, and the bottom surface can be fixedly connected to the bottom of the prefabricated base plate 6. A plurality of counter-pressure corbels 7 are circumferentially fixedly connected to the outer wall of each steel casing 4, and the plurality of counter-pressure corbels 7 are evenly spaced to ensure that the supporting force on the prefabricated base plate 6 is evenly transmitted. The counter-pressure corbel 7 can apply a downward reverse pressure to the prefabricated base plate 6 through its own weight and the rigid connection with the steel casing 4, offsetting the buoyancy of the water pressure on the prefabricated base plate 6 during high tide, thereby ensuring that the prefabricated base plate 6 is close to the distribution beam and maintaining the stability of the entire structure. At the same time, the integrity of the structure is enhanced by the counter-pressure corbel 7, reducing structural deformation and displacement caused by external factors, and ensuring the smooth progress of construction.

[0037] In the embodiment of the present application, the plurality of first bottom plates 61 and the first bottom plates 61 and the second bottom plates 62 are fixedly connected by wet seams.

[0038] Specifically, the first and second regions are each composed of multiple first base plates 61 spliced together in an array. The joints between the multiple first base plates 61 within the first and second regions are filled and connected using materials such as epoxy mortar and concrete. The third region is located between the first and second regions and at the offset between the first base plates 61. The third region is composed of multiple sequentially connected second base plates 62. Similarly, a wet joint process is used to join the multiple second base plates 62 and the first base plates 61 and the second base plates 62. Prior to wet jointing, the joint surfaces of the first base plates 61 and the second base plates 62 can be pre-treated, such as roughening or grooving, to improve the bonding strength between the new and old concrete.

[0039] In a second aspect, the embodiments of the present application provide a method for constructing an assembled concrete cap in a tidal environment. Figure 12 The flowchart of the construction method provided in the embodiment of the present application is as follows: Figure 2As shown, the construction method includes the following steps: In step S1 , the distribution beam is hoisted on top of a plurality of corbels 2 .

[0040] Specifically, after the construction of the foundation is completed, the drilling platform is removed, and the steel casing 4 and the steel pipe piles 5 of the drilling platform are retained. During the hoisting process of the distribution beam, the transverse distribution beam 8 can be hoisted to the top of the steel pipe pile 5 first, and then the longitudinal distribution beam 1 and the top of the multiple corbels 2 connecting the system 3 to the outer wall of the steel casing 4 are hoisted, and then the transverse distribution beam 8 and the longitudinal distribution beam 1 are welded into a whole. Among them, before the distribution beam is hoisted, the corbel 2 is fixed to the outer wall of the steel casing 4. The corbel 2 can be fixedly connected to the outer wall of the steel casing 4 through a connector, and the corbel 2 can also be welded to the outer wall of the steel casing 4. After the distribution beam is hoisted to the top of the steel pipe pile 5 and the corbel 2, the distribution amount is preliminarily fixed. Temporary support or bolt connection can be used to prevent the distribution beam from shifting during subsequent construction.

[0041] In step S2 , a plurality of first bottom plates 61 and a plurality of second bottom plates 62 are hoisted onto the distribution beam.

[0042] Specifically, multiple steel casings 4 can be numbered in advance, and according to the position of each steel casing 4, the interval between adjacent steel casings 4 and the diameter of each steel casing 4, first bottom plates 61 corresponding to the multiple steel casings 4 are prepared in advance and numbered, and second bottom plates 62 are prepared and numbered according to the pre-designed prefabricated bottom plates 6, and the first bottom plates 61 and the second bottom plates 62 are symmetrically lifted to the top of the distribution beam in blocks by using a crane according to the numbers.

[0043] After hoisting multiple first bottom plates 61 and second bottom plates 62 on the distribution beam according to the preset corresponding relationship, it also includes: pouring filling concrete between the prefabricated bottom plate 6 and the steel casing 4 under the condition of low water level during construction; after the filling concrete reaches the preset strength, the back-pressure corbel 7 used to press the distribution beam is welded to the outer wall of each steel casing 4.

[0044] In step S3 , joint filling concrete is poured between the first bottom plates 61 and between the first bottom plates 61 and the second bottom plates 62 to form precast bottom plates 6 , and precast side plates 9 are arranged around the precast bottom plates 6 to form a pouring trough for pouring the foundation concrete.

[0045] Specifically, ensure that all first bottom plates 61 and second bottom plates 62 have been accurately hoisted and fixed on the distribution beam according to the preset corresponding relationship, and their positions and elevations meet the design requirements, pour concrete to the joints between the multiple first bottom plates 61 and the second bottom plates 62, and splice the multiple first bottom plates 61 and the multiple second bottom plates 62 through the wet joint process to form a whole prefabricated bottom plate 6, and then use the hoisting equipment to hoist the prefabricated side panels 9 to the four sides of the prefabricated bottom plate 6, ensuring that their connection position with the prefabricated bottom plate 6 is accurate, and fix the prefabricated side panels 9 to the prefabricated bottom plate 6 by welding, bolting or other connection methods to ensure a firm connection.

[0046] In step S4, the foundation pile is cast in the casting trough.

[0047] Specifically, the first layer of pedestal is cast in the casting trough. The first layer of pedestal is divided into the first part and the second part. The first pedestal is generally a high pedestal concrete with a height of 0.75m. After the concrete strength of the first pedestal reaches the design strength, the design strength is 100%, the corbel 2 and the prefabricated side plate 9 are removed, and the second part is cast. The second pedestal is generally a high pedestal concrete with a height of 0.75m. During high tide, the connecting hole should be kept open to ensure that the water head difference between the inner and outer sides of the prefabricated bottom plate 6 does not exceed 1m to prevent the prefabricated bottom plate 6 from floating.

[0048] Furthermore, the prefabricated skirt panels are symmetrically installed, the steel bars of the second and third layer caps are tied in sequence, and the second and third layer caps are cast.

[0049] For relevant technical features not disclosed in the embodiments of this application, please refer to the previous embodiment and will not be repeated here.

[0050] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0051] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0052] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A construction device for an assembled concrete cap in a tidal environment, characterized in that: include: A precast base plate (6) and a precast side plate (9) arranged around the precast base plate (6) to form a casting trough for casting platform concrete, the precast base plate (6) comprising a first base plate (61) and a second base plate (62), and the first base plate (61) is provided with a through hole for allowing the steel casing (4) to pass through, the area where the precast base plate (6) is located comprises a first area, a second area and a third area located between the first area and the second area for connecting the first area and the second area, the first area and the second area are both formed by a plurality of first base plates (61) spliced together in an array form, and the third area is formed by a plurality of second base plates (62) connected in sequence; A distribution beam located below the prefabricated base plate (6), the distribution beam comprising two transverse distribution beams (8) spaced apart and a plurality of longitudinal distribution beams (1) located between the two transverse distribution beams (8), the plurality of longitudinal distribution beams (1) being arranged parallel and spaced apart along the length direction of the prefabricated base plate (6), and a channel for placing a steel casing (4) being formed between two adjacent longitudinal distribution beams (1), and the ends of the plurality of longitudinal distribution beams (1) being fixed to the two transverse distribution beams (8); A plurality of corbels (2) are used to connect a steel casing (4) and a longitudinal distribution beam (1), wherein the longitudinal distribution beam (1) is mounted on the corbels (2).

2. The construction device for the assembled concrete cap in a tidal environment according to claim 1, characterized in that: A plurality of steel pipe piles (5) for supporting the transverse distribution beam (8) are provided below the transverse distribution beam (8); the steel pipe piles (5) are distributed on the outer peripheral sides of the plurality of steel protective pipes; the tops of the steel pipe piles (5) and the tops of the corbels (2) are located on the same horizontal plane.

3. The construction device for the assembled concrete cap in a tidal environment according to claim 1, characterized in that: The two brackets (2) are arranged at opposite ends of the outer wall of each steel casing (4).

4. The construction device for an assembled concrete pile cap in a tidal environment according to claim 1, characterized in that: A transverse connecting beam is provided between the two transverse distribution beams (8), longitudinal distribution beams (1) are fixed on both sides of the connecting beam, and the longitudinal distribution beams (1) located on both sides of the connecting beam form a plurality of spaced vertical offsets.

5. The construction device for an assembled concrete pile cap in a tidal environment according to claim 1, characterized in that: A plurality of connection systems (3) are provided between the plurality of longitudinal distribution beams (1).

6. The construction device for an assembled concrete cap in a tidal environment according to claim 1, characterized in that: A counter-pressure bracket (7) is fixed to a side of the prefabricated bottom plate (6) away from the distribution beam, and one side of the counter-pressure bracket (7) is fixedly connected to the steel casing (4). The outer wall of each steel casing (4) is circumferentially fixedly connected with a plurality of the counter-pressure brackets (7).

7. The construction device for an assembled concrete pile cap in a tidal environment according to claim 1, characterized in that: The plurality of first bottom plates (61) and the first bottom plates (61) and the second bottom plates (62) are fixedly connected via wet seams.

8. A construction method for constructing an assembled concrete cap based on the construction device according to any one of claims 1 to 7, characterized in that: include: The distribution beam is hoisted on the top of the plurality of corbels (2); Hoisting a plurality of first bottom plates (61) and a plurality of second bottom plates (62) on a distribution beam; Casting joint-filling concrete between the plurality of first bottom plates (61) and between the plurality of first bottom plates (61) and second bottom plates (62) to form a precast bottom plate (6), and surrounding the precast side plates (9) on the precast bottom plate (6) to form a casting trough for casting the cap concrete; Cast the foundation in the casting trough.

9. The construction method of an assembled concrete cap in a tidal environment according to claim 8, characterized in that: After the plurality of first base plates (61) and the plurality of second base plates (62) are hoisted onto the distribution beam according to the preset corresponding relationship, the method further comprises: pouring filling concrete between the prefabricated base plate (6) and the steel casing (4) under the condition of low water level during construction; After the filling concrete reaches a preset strength, a counter-pressure bracket (7) for pressing the distribution beam is welded to the outer wall of each steel casing (4).

10. The construction method of an assembled concrete pile cap in a tidal environment according to claim 8, characterized in that: The pouring of the cap in the pouring trough comprises: Casting the first layer of the pedestal in the casting trough, and after the concrete strength of the first layer of the pedestal reaches the designed strength, removing the corbel (2) and the prefabricated side panels (9); Install the prefabricated skirt panels symmetrically, tie the steel bars of the second and third layer caps in sequence, and cast the second and third layer caps.

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