External bracket and gravity type structure

Abstract

The utility model provides an external corbel and gravity type structure, wherein the external corbel comprises a vertical steel plate, two side surfaces of the vertical steel plate are respectively and vertically provided with a suspension steel plate and a support steel plate, the position of the suspension steel plate is higher than the position of the support steel plate, one end of the suspension steel plate far away from the vertical steel plate is downwards and vertically bent to form a buckle plate, and the buckle plate is connected with the vertical steel plate. A plurality of first reinforcing rib plates are arranged at the top of the hanging steel plate and connected with the vertical steel plate, and a plurality of second reinforcing rib plates are arranged at the bottom of the supporting steel plate and connected with the vertical steel plate. According to the utility model, the mounting and dismounting difficulty of the formwork in the prefabricated caisson can be greatly reduced, the construction period is shortened, and the problem of corrosion of reinforcing steel bars caused by contact with the reinforcing steel bars in the prefabricated caisson is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of dock technology, and in particular relates to an external bracket and gravity structure. Background Technology

[0002] Gravity structures are a common type of wharf structure and are widely used in wharf engineering. They are characterized by high rigidity, strong load adaptability, and good durability. They are also suitable for areas with good geological conditions, large prefabrication yards, contiguous wharves, and offshore pier wharves.

[0003] Caissons are common gravity structures, large reinforced concrete compartmented empty boxes. The external structure mainly consists of a concrete base slab and outer walls. The interior is divided into several compartments by horizontal and vertical partitions. The compartments are typically backfilled with rubble, medium-coarse sand, etc., up to the top surface. However, sometimes wharves are located on non-rocky foundations. To minimize stress at the bottom of the wharf foundation, the backfill material in some structural designs is not fully filled at the wharf's front edge, creating empty compartments between the upper breast wall structure and the backfill material. In this case, separate compartment cover plates are needed as bottom formwork to support the upper breast wall structure. The compartment cover plate support structure can use reinforced concrete brackets or embedded steel components. However, the internal formwork of precast caisson structures is mostly an integrally assembled inner liner, whose installation and removal generally only require vertical lifting. If reinforced concrete brackets are installed inside the caisson compartments, the conventional internal formwork of the precast caisson structure cannot be installed and removed normally. Even if the inner membrane plate can be locally modified, it will greatly extend the installation and removal time, seriously affecting the caisson prefabrication period. Using conventional pre-embedded steel components for support requires pre-embedding steel plates, bolts, and studs within the outer wall of the caisson, which are then welded together with the external steel plates to form a support. Due to the numerous reinforcing bars within the caisson's outer wall structure, contact between the pre-embedded bolts and studs and the internal reinforcing bars is unavoidable, easily leading to corrosion of the internal reinforcing bars and negatively impacting the durability of the main caisson structure. Therefore, from the perspectives of construction convenience and structural durability, the design of the caisson compartment brackets needs to be optimized. Utility Model Content

[0004] The purpose of this utility model is to provide an external corbel and gravity structure, which can greatly reduce the difficulty of installing and dismantling the template inside the precast caisson, save the construction period, and avoid the corrosion problem of the steel bars caused by contact with the steel bars inside the precast caisson.

[0005] This utility model is achieved through the following technical solution:

[0006] An external bracket includes a vertical steel plate. A hanging steel plate and a supporting steel plate are respectively provided vertically on two sides of the vertical steel plate. The hanging steel plate is positioned higher than the supporting steel plate. The end of the hanging steel plate away from the vertical steel plate is bent vertically downward to form a snap-fit ​​plate. Several first reinforcing ribs are provided at the top of the hanging steel plate and are connected to the vertical steel plate. Several second reinforcing ribs are provided at the bottom of the supporting steel plate and are connected to the vertical steel plate.

[0007] Furthermore, the outer surfaces of the vertical steel plate, the hanging steel plate, the supporting steel plate, the first reinforcing rib, and the second reinforcing rib are all provided with an anti-corrosion coating.

[0008] Furthermore, clearance grooves are provided on the suspension steel plate.

[0009] Furthermore, the thickness of the vertical steel plate, the suspension steel plate, the support steel plate, the first reinforcing rib, and the second reinforcing rib is 10-15 mm.

[0010] This utility model also provides a gravity structure, including a prefabricated caisson with an open top. The interior of the prefabricated caisson is divided into several compartments by several partition walls. Each compartment is filled with filler. Several external brackets are provided on the opposite side walls of each compartment. When the external brackets are installed on the side walls of the compartment, the suspension steel plate contacts the top of the side wall of the compartment, the vertical steel plate is located inside the compartment and contacts the side wall of the compartment, and the buckle plate is located outside the compartment and contacts the side wall of the compartment. A compartment cover plate is provided on several support steel plates located in the same compartment.

[0011] Furthermore, each compartment contains six external support brackets, which are evenly distributed on the opposite side walls of the compartment.

[0012] Compared with existing technologies, the advantages of this utility model are as follows: the structure is simple and easy to process. By hanging the steel plate on the precast caisson, the compartment cover can be quickly installed with simple placement, which greatly reduces the difficulty of installing and dismantling the template inside the precast caisson, saves construction time, and avoids the problem of corrosion of the steel bars caused by the contact between the precast steel components and the steel bars inside the precast caisson, since there is no need to embed steel components in the side wall of the precast caisson. This helps to ensure the durability of the main precast caisson structure; the outer side of the hanging steel plate bends downward to form a buckle plate, which achieves the torque balance of the entire corbel structure by transmitting horizontal force to the outer wall of the precast caisson. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external bracket of this utility model;

[0014] Figure 2 This is a schematic diagram of the installation of the external bracket of this utility model;

[0015] Figure 3This is a top view of the centrally suspended steel plate of the externally mounted bracket of this utility model.

[0016] In the figure, 1-vertical steel plate, 2-suspended steel plate, 3-supporting steel plate, 4-fastener plate, 5-first reinforcing rib, 6-second reinforcing rib, 7-avoidance groove, 8-precast caisson, 9-cell cover plate, 10-outward reinforcing bar, 11-cast-in-place breast wall structure. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the external bracket of this utility model. An external bracket includes a vertical steel plate 1. A hanging steel plate 2 and a supporting steel plate 3 are respectively vertically provided on two sides of the vertical steel plate 1. The position of the hanging steel plate 2 is higher than the position of the supporting steel plate 3. The end of the hanging steel plate 2 away from the vertical steel plate 1 is bent vertically downward to form a buckle plate 4. The top of the hanging steel plate 2 is provided with several first reinforcing ribs 5, which are connected to the vertical steel plate 1. The bottom of the supporting steel plate 3 is provided with several second reinforcing ribs 6, which are connected to the vertical steel plate 1.

[0023] Please refer to the following: Figure 2 , Figure 2 This is a schematic diagram of the installation of the external corbel of this utility model. The vertical steel plate 1 is the main steel plate, playing a balancing and coordinating role. It is vertically installed close to the inside of the prefabricated caisson 8, providing a support surface for other steel plates. The suspension steel plate 2 rests on the top of the outer wall of the prefabricated caisson 8 and is vertically bent downwards along the outer wall of the caisson to form a snap-fit ​​plate 4. The snap-fit ​​plate 4 can achieve torque balance of the entire external corbel by transmitting horizontal force to the outer wall of the caisson. This balance is particularly important for the installation process of the compartment cover plate 9 inside the prefabricated caisson 8. The support steel plate 3 supports the compartment cover plate 9 and is the direct load-bearing steel plate of the entire external corbel. It transmits torque by welding with the vertical steel plate 1, which cancels out the horizontal reaction force from the outer wall of the prefabricated caisson 8 formed by the snap-fit ​​plate 4, achieving torque balance of the entire external corbel. The first reinforcing rib plate 5 and the second reinforcing rib plate 6 provide load-bearing support for the suspension steel plate 2 and the support steel plate 3, respectively, avoiding excessive local stress at the joints and ensuring the force balance of the entire external corbel. The above steel plates are welded together using fillet welds. All fillet welds use E43 grade welding rods with a weld height of 10mm.

[0024] Compared to conventional reinforced concrete brackets, external brackets are suspended on the precast caisson 8 via hanging steel plates 2. The caisson cover 9 can be quickly installed with simple placement, greatly reducing the difficulty of installing and dismantling the formwork inside the precast caisson 8 and saving construction time. Compared to conventional embedded steel component supports, external brackets do not require embedded steel components in the side wall of the precast caisson 8, avoiding the corrosion problem caused by the contact between the embedded steel components and the steel bars inside the precast caisson 8, which is conducive to ensuring the durability of the main precast caisson 8 structure.

[0025] To address corrosion resistance requirements, in one embodiment, the outer surfaces of the vertical steel plate 1, the suspended steel plate 2, the supporting steel plate 3, the first reinforcing rib 5, and the second reinforcing rib 6 are all coated with an anti-corrosion coating. This anti-corrosion treatment prevents the outer surfaces of the vertical steel plate 1, the suspended steel plate 2, the supporting steel plate 3, the first reinforcing rib 5, and the second reinforcing rib 6 from contacting corrosive media (such as water, oxygen, and chemicals) in the surrounding environment, thereby extending their service life and ensuring structural safety.

[0026] Please refer to the following: Figure 3 , Figure 3 This is a top view of the suspended steel plate of the external corbel of this utility model. Considering that the precast caisson 8 has protruding reinforcing bars 10 at the top for anchoring the upper cast-in-place breast wall structure 11, in one embodiment, a clearance groove 7 is provided on the suspended steel plate 2. The clearance groove 7 can ensure that the protruding reinforcing bars 10 of the precast caisson 8 can be smoothly anchored in the upper cast-in-place breast wall structure 11 through the suspended steel plate 2. The dimensions of the clearance groove 7 are comprehensively considered in conjunction with the position of the protruding reinforcing bars 10 of the precast caisson 8.

[0027] In one embodiment, the thickness of the vertical steel plate 1, the suspension steel plate 2, the support steel plate 3, the first reinforcing rib 5, and the second reinforcing rib 6 is 10-15 mm.

[0028] This utility model also provides a gravity-type structure, including a prefabricated caisson 8 with an open top. The interior of the prefabricated caisson 8 is divided into several compartments by several partition walls. Each compartment is filled with filler. Several external brackets, as described above, are respectively provided on the opposite side walls of each compartment. When the external brackets are installed on the side walls of the compartment, the suspension steel plate 2 contacts the top of the compartment side wall, the vertical steel plate 1 is located inside the compartment and contacts the compartment side wall, and the snap-fit ​​plate 4 is located outside the compartment and contacts the compartment side wall. Several support steel plates 3 located in the same compartment share a common compartment cover plate 9. The gravity-type structure of this utility model includes the above-mentioned external brackets and has all the effects of the above-mentioned external brackets, which will not be described in detail here.

[0029] In one embodiment, each compartment contains six external brackets, which are evenly distributed on the opposite side walls of the compartment. These six external brackets support the compartment cover plate 9, ensuring the smooth construction of the upper cast-in-place breast wall structure 11.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An externally mounted cow leg, characterized in that, The device includes a vertical steel plate, on which a hanging steel plate and a supporting steel plate are respectively vertically provided on two sides. The hanging steel plate is positioned higher than the supporting steel plate. The end of the hanging steel plate away from the vertical steel plate is bent vertically downward to form a snap-fit ​​plate. The top of the hanging steel plate is provided with several first reinforcing ribs, which are connected to the vertical steel plate. The bottom of the supporting steel plate is provided with several second reinforcing ribs, which are connected to the vertical steel plate.

2. The external cow leg according to claim 1, characterized in that, The outer surfaces of the vertical steel plate, the hanging steel plate, the supporting steel plate, the first reinforcing rib, and the second reinforcing rib are all provided with an anti-corrosion coating.

3. The external cow leg according to claim 1, characterized in that, The suspension steel plate is provided with clearance grooves.

4. The external cow leg according to claim 1, characterized in that, The thickness of the vertical steel plate, the hanging steel plate, the supporting steel plate, the first reinforcing rib, and the second reinforcing rib is 10~15mm.

5. A gravity-type structure, comprising a prefabricated caisson with an open top, the interior of which is divided into several compartments by several partition walls, each compartment being filled with filler material, characterized in that, Each of the compartments is provided with several external brackets as described in any one of claims 1-4 on its two opposite side walls. When the external brackets are installed on the side walls of the compartment, the suspension steel plate is in contact with the top of the side wall of the compartment, the vertical steel plate is located inside the compartment and in contact with the side wall of the compartment, the buckle plate is located outside the compartment and in contact with the side wall of the compartment, and a compartment cover plate is provided on several support steel plates located in the same compartment.

6. The gravity-type structure according to claim 5, characterized in that, The number of external brackets in each compartment is six, and the six external brackets are evenly arranged on the two side walls of the compartment facing each other.

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