A caisson for land reclamation

Abstract

The utility model belongs to the caisson technical field, concretely relates to a fill sea to make land caisson, including front wallboard, front wallboard is by a plurality of prefabricated curved surface formwork splicing and is composed, front wallboard presents double curvature parabolic surface shape, front wallboard support column, front wallboard support column is fixed in the side surface of rear wallboard towards front wallboard and supports and connects front wallboard, the quantity of front wallboard support column is a plurality, every prefabricated curved surface formwork is connected with a front wallboard support column, side plate, the side of front and back of side plate is connected with the edge portion of front wallboard and rear wallboard respectively flatly, the bottom end of side plate, rear wallboard, front wallboard is surrounded and is connected in the edge portion of bottom plate. Through the shape design of front wallboard, the wave impact perpendicular to front wallboard is decomposed into vertical climbing and transverse diversion, improve the anti-wave performance of caisson, avoid local vortex concentration, front wallboard is modularized and is assembled into shape by a plurality of prefabricated curved surface formwork, effectively improve construction efficiency, reduce construction difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of caisson technology, specifically relating to a caisson for land reclamation. Background Technology

[0002] Land reclamation plays a vital role in the development and utilization of marine resources today. With the rapid economic development of coastal areas and the increasing demand for land resources, land reclamation has become one of the effective means to expand land area. Among the many land reclamation technologies, the caisson method is widely used due to its numerous advantages.

[0003] Traditional land reclamation caissons face the following problems when dealing with complex marine environments:

[0004] In the marine environment, the impact of ocean waves is a key factor affecting the stability and durability of caissons. The front walls of ordinary caissons are mostly planar structures. When waves impact vertically, the enormous impact force is concentrated on the front walls, causing excessive pressure on the caisson. Furthermore, planar structures cannot effectively divert waves, easily forming localized eddies around the caisson. These eddies further intensify the erosion of the caisson, and over time, may loosen the caisson foundation, affecting the overall stability of the land reclamation project.

[0005] Furthermore, in actual land reclamation projects, multiple caissons are usually used side by side. However, the structural design of traditional caissons means that when arranged side by side, an effective flow guiding surface cannot be formed between adjacent caissons. The wave impact force cannot be evenly distributed between adjacent caissons, which can easily cause excessive stress in local areas and affect the stability of the entire caisson group. Utility Model Content

[0006] To address the above problems, the purpose of this utility model is to provide a caisson for land reclamation, which solves the problems of concentrated stress on the front wall of traditional caissons, easy formation of local eddies, poor wave resistance, lack of effective guiding surface when multiple caissons are arranged side by side, uneven distribution of wave force, and impact on stability.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a caisson for land reclamation, comprising:

[0008] The front wall panel is composed of multiple prefabricated curved templates and has a hyperboloidal parabolic shape.

[0009] A front wall panel support column is fixed to the side of the rear wall panel facing the front wall panel and supports and connects to the front wall panel. There are multiple front wall panel support columns, and each precast curved template is connected to one front wall panel support column.

[0010] The side panel is flatly connected to the edges of the front wall panel and the rear wall panel on its front and rear sides, respectively. The bottom ends of the side panel, the rear wall panel, and the front wall panel are surrounded and connected to the edge of the bottom plate.

[0011] The beneficial effects of this utility model are as follows: by designing the shape of the front wall panel, the wave impact perpendicular to the front wall panel is decomposed into vertical climbing and lateral diversion, which improves the wave resistance performance of the caisson and avoids local eddy concentration; the front wall panel is modularly assembled from multiple prefabricated curved templates, which effectively improves construction efficiency and reduces construction difficulty.

[0012] In order to effectively divert waves through the use of the front panel;

[0013] As a further improvement to the above technical solution: the precast curved template convexes towards the direction of the incoming wave in the vertical direction, and the horizontal curvature of the precast curved template gradually increases from the bottom to the top, while the vertical curvature gradually decreases from the center to both sides.

[0014] The beneficial effects of this improvement are: the curvature gradient design of the prefabricated curved template can effectively enhance the bottom's impact resistance and disperse lateral wave forces.

[0015] In order to effectively avoid local vortex concentration through the use of the front wall panel;

[0016] As a further improvement to the above technical solution: the prefabricated curved template is concave towards the caisson in the horizontal direction.

[0017] The beneficial effects of this improvement are: when multiple caissons are arranged side by side, the horizontal curvature of the double-curvature front wall panel disperses the wave impact force along the tangential direction, and a continuous guiding surface is formed between adjacent caissons, avoiding local vortex concentration.

[0018] To ensure the stability and flatness of the connection between multiple prefabricated curved surface templates;

[0019] As a further improvement to the above technical solution: the curvature of the reinforcing bars embedded in the precast curved template is the same as the parabolic curvature of the precast curved template, and the reinforcing bars extend to the outside of the precast curved template and into the pouring joint.

[0020] The beneficial effects of this improvement are as follows: after the precast curved template is initially assembled into the front wall panel by the front wall panel support column, the template can be erected to pour the casting joint formed between adjacent precast curved templates, thereby improving the overall stability of the front wall panel and improving the surface flatness of the front wall panel.

[0021] To ensure a secure connection between the front panel and the front panel support column;

[0022] As a further improvement to the above technical solution: the precast curved template is cast into a pre-embedded column on the side facing the front wall support column. The pre-embedded column is perpendicular to the front wall support column. The steel bars embedded in the pre-embedded column are welded to the steel bars embedded in the precast curved template. The steel bars embedded in the front wall support column are welded to the steel bars embedded in the rear wall panel.

[0023] The beneficial effects of this improvement are: the embedded column can form a stable integrated structure with the precast curved template, ensuring the stability of the connection between the precast curved template and the front wall support column.

[0024] To quickly and securely connect the front wall panel support column to the front wall panel;

[0025] As a further improvement to the above technical solution: a connecting flange is fixed at one end of the front wall support column and the embedded column facing each other, and the two end faces of the connecting flange are connected by bolts. The connecting flanges on the front wall support column and the embedded column are welded to the steel bars embedded in the front wall support column and the embedded column.

[0026] The beneficial effect of this improvement is that after the anti-corrosion treatment is done on the surface of the connecting flange and bolts, the front wall support column and the embedded column can be quickly and firmly connected by flange bolts.

[0027] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the front wall panel in this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of this utility model without the front wall panel;

[0031] In the figure: 1. Front wall panel; 11. Precast curved template; 12. Pouring joint; 13. Embedded column; 2. Front wall panel support column; 21. Connecting flange; 3. Rear wall panel; 4. Side panel; 5. Base plate. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0033] Example 1:

[0034] like Figure 1 — Figure 3 As shown: A caisson for land reclamation includes:

[0035] Front wall panel 1, which is composed of multiple prefabricated curved templates 11, has a hyperbolic paraboloid shape.

[0036] A front wall panel support column 2 is fixed to the side of the rear wall panel 3 facing the front wall panel 1 and supports and connects to the front wall panel 1. There are multiple front wall panel support columns 2, and each precast curved template 11 is connected to one front wall panel support column 2.

[0037] Side panels 4 are flatly connected to the edges of the front wall panel 1 and the rear wall panel 3 on their front and rear sides respectively. The bottom ends of the side panels 4, rear wall panel 3, and front wall panel 1 surround and connect to the edge of the bottom plate 5. By designing the shape of the front wall panel 1, the wave impact perpendicular to the front wall panel 1 is decomposed into vertical climbing and lateral diversion, improving the wave resistance of the caisson and avoiding local eddy concentration. The front wall panel 1 is modularly assembled from multiple prefabricated curved templates 11, effectively improving construction efficiency and reducing construction difficulty. The prefabricated curved templates 11 bulge vertically towards the direction of incoming waves, and the water flow from the bottom to the top of the prefabricated curved templates 11 is... The curvature of the precast curved template 11 gradually increases, while the vertical curvature gradually decreases from the center to both sides. This gradual curvature design effectively enhances the bottom's impact resistance and disperses lateral wave forces. The precast curved template 11 is concave towards the caisson in the horizontal direction. When multiple caissons are arranged side by side, the horizontal curvature of the double-curvature front wall panel 1 disperses the wave impact force along the tangential direction, forming a continuous guide surface between adjacent caissons to avoid local vortex concentration. The curvature of the reinforcing bars embedded in the precast curved template 11 is the same as the parabolic curvature of the precast curved template 11, and the reinforcing bars extend to the outside of the precast curved template 11 and into the pouring joint 1. In step 2, after the precast curved template 11 is initially assembled into the front wall panel 1 by the front wall panel support column 2, the template can be erected to pour the casting joint 12 formed between adjacent precast curved templates 11, thereby improving the overall stability of the front wall panel 1 and the flatness of the curved surface of the front wall panel 1. A pre-embedded column 13 is cast on the side of the precast curved template 11 facing the front wall panel support column 2. The pre-embedded column 13 is perpendicular to the front wall panel support column 2. The reinforcing bars embedded in the pre-embedded column 13 are welded to the reinforcing bars embedded in the precast curved template 11. The reinforcing bars embedded in the front wall panel support column 2 are welded to the reinforcing bars embedded in the rear wall panel 3. The embedded column 13 can form a stable integrated structure with the precast curved template 11, ensuring the stability of the connection between the precast curved template 11 and the front wall support column 2. The front wall support column 2 and the embedded column 13 are both fixed with connecting flanges 21 at their opposite ends. The two end faces of the connecting flanges 21 are connected by bolts. The connecting flanges 21 on the front wall support column 2 and the embedded column 13 are welded to the steel bars embedded in the front wall support column 2 and the embedded column 13. After the surface of the connecting flanges 21 and the bolts is treated with anti-corrosion, the front wall support column 2 and the embedded column 13 can be quickly and firmly connected by flange bolts.

[0038] The working principle of this technical solution is as follows: According to the design requirements, multiple precast curved templates 11 are fabricated at the prefabrication site. During the fabrication process, it is ensured that the curvature of the reinforcing bars embedded in the precast curved templates 11 is strictly consistent with the parabolic curvature of the precast curved templates 11. The two ends of the reinforcing bars must extend accurately to the outside of the precast curved templates 11 so that they can be subsequently inserted into the pouring joint 12. On the side of the precast curved templates 11 facing the front wall support column 2, the embedded column 13 is cast and formed, and the reinforcing bars embedded in the embedded column 13 are... The steel bars embedded in the precast curved template 11 are firmly welded to form a stable integrated structure. At the same time, the front wall support column 2 is made, and a connecting flange 21 is fixed at the end of the column facing the embedded column 13. The connecting flange 21 is welded to the steel bars embedded in the front wall support column 2. Similarly, the connecting flange 21 is also fixed at the corresponding end of the embedded column 13 and welded to the steel bars embedded in the embedded column 13. The rear wall panel 3, side panel 4 and bottom panel 5 are made, and steel bars are embedded in each panel according to the design requirements.

[0039] The precast curved template 11 is connected to the front wall panel support column 2 via its embedded column 13. The connecting flange 21 with its two end faces touching is fastened with bolts. At the same time, anti-corrosion treatment is ensured on the surface of the connecting flange 21 and bolts to ensure the stability and durability of the connection. Each precast curved template 11 is connected to one front wall panel support column 2 to initially assemble the front wall panel 1. Templates are erected between adjacent precast curved templates 11, and then pouring is carried out to form a pouring joint 12. During the pouring process, the quality of concrete pouring is ensured so that the pouring joint 12 can firmly connect the adjacent precast curved templates 11 into a whole, improving the overall stability and surface flatness of the front wall panel 1. The front and rear sides of the side panel 4 are smoothly connected to the edges of the front wall panel 1 and the rear wall panel 3, respectively. Then, the bottom ends of the side panel 4, the rear wall panel 3, and the front wall panel 1 are surrounded and connected to the edge of the bottom plate 5, and corresponding pouring is carried out to close it, completing the overall assembly of the caisson.

[0040] During the placement of the caisson, ensure that the front wall panel 1 faces the direction of the waves, so that the hyperbolic front wall panels 1 of the adjacent caissons form a continuous flow guiding surface to effectively disperse the wave impact force and avoid local eddy concentration. After the caisson is placed, appropriate materials such as sand and gravel can be filled inside the caisson according to actual needs to increase the stability of the caisson.

[0041] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the invention; these examples are merely for the purpose of helping to understand the method and core ideas of the invention. The above descriptions are only preferred embodiments of the invention. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of the invention, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this invention.

Claims

1. A caisson for land reclamation, characterized in that: include: The front wall panel (1) is composed of multiple prefabricated curved templates (11) spliced ​​together. The front wall panel (1) has a hyperbolic paraboloid shape. Front wall panel support column (2), the front wall panel support column (2) is fixed on the side of the rear wall panel (3) facing the front wall panel (1) and supports and connects the front wall panel (1). There are multiple front wall panel support columns (2), and each precast curved template (11) is connected to a front wall panel support column (2). Side plate (4), the front and rear sides of the side plate (4) are flatly connected to the edges of the front wall plate (1) and the rear wall plate (3), and the bottom ends of the side plate (4), the rear wall plate (3) and the front wall plate (1) are surrounded and connected to the edge of the bottom plate (5).

2. The caisson for land reclamation according to claim 1, characterized in that: The precast curved template (11) convexes in the direction of the incoming wave in the vertical direction. The horizontal curvature of the precast curved template (11) gradually increases from the bottom to the top, and the vertical curvature gradually decreases from the center to both sides.

3. A caisson for land reclamation according to claim 1, characterized in that: The precast curved template (11) is concave towards the caisson in the horizontal direction.

4. A caisson for land reclamation according to claim 1, characterized in that: The curvature of the reinforcing bars embedded in the precast curved template (11) is the same as the parabolic curvature of the precast curved template (11), and the reinforcing bars extend to the outside of the precast curved template (11) and into the pouring joint (12).

5. A caisson for land reclamation according to claim 1, characterized in that: The precast curved template (11) has a pre-embedded column (13) cast on the side facing the front wall support column (2). The pre-embedded column (13) is perpendicular to the front wall support column (2). The steel bars embedded in the pre-embedded column (13) are welded to the steel bars embedded in the precast curved template (11). The steel bars embedded in the front wall support column (2) are welded to the steel bars embedded in the rear wall panel (3).

6. A caisson for land reclamation according to claim 1, characterized in that: The front wall support column (2) and the embedded column (13) are both fixed with connecting flanges (21) at opposite ends. The two end faces of the connecting flanges (21) are connected by bolts. The connecting flanges (21) on the front wall support column (2) and the embedded column (13) are welded to the steel bars embedded in the front wall support column (2) and the embedded column (13).

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