Cast-in-place box girder

Abstract

The utility model provides a cast-in-place box girder, which relates to the technical field of girder boxes and comprises an outer frame, spacing components and V-shaped plates, the spacing components are arranged in the outer frame and divide the inner part of the outer frame into a plurality of sub-cavities, and a plurality of V-shaped plates are arranged in each sub-cavity. The inner space of the outer frame is divided into a plurality of sub-cavities by the spacing components, and a plurality of V-shaped plates are arranged in each sub-cavity, so that the borne pressure is decomposed step by step, the bearing capacity is greatly improved, and different numbers of V-shaped plates can be arranged in each sub-cavity according to the actual stress condition, so that the overall bearing strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beam boxes, in particular to a cast-in-situ box beam. Background Art

[0002] A box girder is a type of beam used in bridge construction. It is hollow inside with flanges on both sides, resembling a box, hence its name. Box girders are typically made of steel and concrete. They are characterized by superior dynamic performance, high torsional stiffness, good integrity, and wide adaptability, allowing them to be used on both straight and curved sections. Common box girders are categorized by material into two main types: prestressed reinforced concrete box girders and steel box girders. Prestressed reinforced concrete box girders are constructed on-site and, in addition to longitudinal prestressing, some also incorporate transverse prestressing. Steel box girders are typically fabricated in a factory before being transported to the site for installation. They can be all-steel or partially reinforced with concrete overlays and are generally used on bridges with larger spans. Box girders in reinforced concrete structures are categorized into precast and cast-in-place. Box girders prefabricated at a separate site, combined with a bridge-erecting machine, can be erected after foundation work is complete, accelerating project progress and reducing construction time. Cast-in-place box girders are primarily used on large, continuous bridges.

[0003] The inventors have found that the existing reinforced concrete box girder on-site construction support is a box-shaped structure with a hollow interior and its load-bearing capacity needs to be further improved. Therefore, we have proposed a cast-in-place box girder to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a cast-in-situ box girder, the load-bearing capacity of which is further improved.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a cast-in-place box girder, comprising an outer frame, a spacer assembly and a V-shaped plate, wherein the spacer assembly is arranged in the outer frame to divide the interior of the outer frame into a plurality of sub-chambers, and a plurality of the V-shaped plates are arranged in each of the sub-chambers.

[0007] In an optional embodiment, the partition assembly includes a first partition plate and a second partition plate, and the first partition plate and the second partition plate are arranged in the outer frame to divide the interior of the outer frame into the three sub-chambers from bottom to top.

[0008] In an optional embodiment, the three sub-chambers are respectively the first chamber, the second chamber and the third chamber from bottom to top, and the multiple V-shaped plates are respectively multiple first V-shaped plates, multiple second V-shaped plates and multiple third V-shaped plates, multiple first V-shaped plates are arranged in the first chamber, multiple second V-shaped plates are arranged in the second chamber, and multiple third V-shaped plates are arranged in the third chamber.

[0009] In an optional embodiment, three first V-shaped plates are provided in the first chamber, three second V-shaped plates are provided in the second chamber, and two third V-shaped plates are provided in the third chamber.

[0010] In an optional embodiment, the included angles of the first V-shaped plate, the second V-shaped plate, and the third V-shaped plate increase sequentially.

[0011] In an optional embodiment, the plurality of first V-shaped plates are integrally formed, the plurality of second V-shaped plates are integrally formed, and the plurality of third V-shaped plates are integrally formed.

[0012] In an optional embodiment, the outer frame includes a bottom plate, side support plates and a top plate; the two side support plates are arranged on both sides of the bottom plate, and the top plate is arranged on top of the two side support plates.

[0013] In an optional embodiment, the side support plate includes a first vertical plate, an inclined plate and a second vertical plate connected in sequence; the first vertical plate, the first partition plate and the bottom plate enclose the first chamber, the inclined plate, the first partition plate and the second partition plate enclose the second chamber, and the second vertical plate, the second partition plate and the top plate enclose the third chamber.

[0014] In an optional embodiment, the two side support plates are symmetrically arranged.

[0015] In an optional embodiment, the bottom plate and the top plate are arranged in a flat shape.

[0016] The beneficial effects of the embodiments of the present utility model are:

[0017] The utility model provides a cast-in-place box girder, comprising an outer frame, a spacer assembly, and V-shaped plates. The spacer assembly is disposed within the outer frame, dividing the interior of the outer frame into a plurality of sub-chambers, each of which is provided with a plurality of V-shaped plates. The utility model uses the spacer assembly to divide the interior space of the outer frame into a plurality of sub-chambers, with a plurality of V-shaped plates arranged within each sub-chamber. This decomposes the pressure exerted on the girder step by step, thereby significantly improving the bearing capacity. Furthermore, a different number of V-shaped plates can be provided in each sub-chamber according to the actual load conditions to increase the overall load-bearing strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a cast-in-situ box girder from a first perspective provided by an embodiment of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of the cast-in-situ box girder from a second perspective provided in an embodiment of the utility model.

[0021] icon:

[0022] 10-outer frame; 11-bottom plate; 12-side support plate; 121-first vertical plate; 122-inclined plate; 133-second vertical plate; 13-top plate; 14-first chamber; 15-second chamber; 16-third chamber; 20-spacer assembly; 21-first partition; 22-second partition; 30-V-shaped plate; 31-first V-shaped plate; 32-second V-shaped plate; 33-third V-shaped plate. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] 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 rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0028] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 As shown, this embodiment provides a cast-in-place box girder, including an outer frame 10, a spacer assembly 20 and a V-shaped plate 30. The spacer assembly 20 is arranged in the outer frame 10, dividing the interior of the outer frame 10 into multiple sub-chambers, and multiple V-shaped plates 30 are arranged in each sub-chamber.

[0030] In this embodiment, the internal space of the outer frame 10 is divided into multiple sub-chambers by the spacer component 20, and multiple V-shaped plates are arranged in each sub-chamber, so as to decompose the pressure step by step, thereby greatly improving the bearing capacity. In addition, different numbers of V-shaped plates 30 can be set in each sub-chamber according to the actual stress conditions to increase the overall load-bearing strength.

[0031] In a preferred embodiment, the spacer assembly 20 includes a first partition 21 and a second partition 22. The first partition 21 and the second partition 22 are disposed within the outer frame 10 to divide the interior of the outer frame 10 into three sub-chambers from bottom to top. It is understood that the primary function of the first partition 21 and the second partition 22 is to divide the interior space of the outer frame 10 into layers. For smaller outer frames 10, fewer layers may be used, while for larger outer frames 10, more layers may be used to accommodate the placement of the V-shaped plate 30.

[0032] Of course, the shapes of the first partition plate 21 and the second partition plate 22 can be rectangular or irregular, which is not limited in this embodiment.

[0033] It is understandable that this embodiment does not limit the spacing component 20 to include only the first partition 21 and the second partition 22. It can also have a third partition, a fourth partition, etc., to divide the interior of the outer frame 10 into four or five sub-chambers. The specific number of partitions used depends on the situation.

[0034] In a preferred embodiment, Figure 2 As shown, the three sub-chambers are, from bottom to top, the first chamber 14, the second chamber 15 and the third chamber 16, respectively. The multiple V-shaped plates 30 are, respectively, multiple first V-shaped plates 31, multiple second V-shaped plates 32 and multiple third V-shaped plates 33. The multiple first V-shaped plates 31 are arranged in the first chamber 14, the multiple second V-shaped plates 32 are arranged in the second chamber 15, and the multiple third V-shaped plates 33 are arranged in the third chamber 16.

[0035] It can be understood that the first V-shaped plate 31, the second V-shaped plate 32 and the third V-shaped plate 33 are different in shape and are used for different chambers. Specifically, in this embodiment, the angles of the first V-shaped plate 31, the second V-shaped plate 32 and the third V-shaped plate 33 increase successively. Therefore, the third V-shaped plate in the third chamber 16 is the most sparsely arranged and increases successively downward, which is in line with the stress conditions of each layer. After stacking layers, the overall load-bearing strength can be greatly increased.

[0036] Specifically, three first V-shaped plates 31 are provided in the first chamber 14 , three second V-shaped plates 32 are provided in the second chamber 15 , and two third V-shaped plates 33 are provided in the third chamber 16 .

[0037] In a preferred embodiment, the plurality of first V-shaped plates 31 are integrally formed, the plurality of second V-shaped plates 32 are integrally formed, and the plurality of third V-shaped plates 33 are integrally formed.

[0038] In a preferred embodiment, the outer frame 10 includes a bottom plate 11 , side support plates 12 and a top plate 13 ; the two side support plates 12 are disposed on both sides of the bottom plate 11 , and the top plate 13 is disposed on top of the two side support plates 12 .

[0039] The aforementioned side support plate 12 comprises a first vertical plate 121, an inclined plate 122, and a second vertical plate 133, which are connected in sequence. The first vertical plate 121, the first partition plate 21, and the bottom plate 11 together form a first chamber 14. The inclined plate 122, the first partition plate 21, and the second partition plate 22 together form a second chamber 15. The second vertical plate 133, the second partition plate 22, and the top plate 13 together form a third chamber 16. It will be appreciated that this configuration of the side support plate 12 helps increase the contact area with the bridge, thereby enhancing stability.

[0040] In addition, the two side support plates 12 are symmetrically arranged; the bottom plate 11 and the top plate 13 are flatly arranged.

[0041] The cast-in-situ box girder provided in this embodiment has the following advantages:

[0042] When using this device, the side support plate 12 can increase the contact area between the device and the bridge, thereby increasing the degree of fit and stability. The cavity enclosed by the bottom plate 11, the side support plate 12 and the top plate 13 is separated into a first chamber 14, a second chamber 15 and a third chamber 16, and the overall support structure is divided into three layers of support structure step by step. The three sub-chambers are respectively provided with a first V-shaped plate 31, a second V-shaped plate 32 and a third V-shaped plate 33, so that the pressure is decomposed step by step, and the bearing capacity is greatly improved. By setting the third V-shaped plate 33 in the third chamber 16 as sparsely as possible and increasing it step by step downwards, it conforms to the stress conditions of each layer. After stacking the layers, the overall load-bearing strength can be greatly increased.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cast-in-place box girder, characterized in that: The invention comprises an outer frame, a spacing component and a V-shaped plate. The spacing component is arranged in the outer frame to divide the interior of the outer frame into a plurality of sub-chambers. A plurality of the V-shaped plates are arranged in each of the sub-chambers.

2. A cast-in-place box girder according to claim 1, characterized in that: The partition assembly includes a first partition plate and a second partition plate, and the first partition plate and the second partition plate are arranged in the outer frame to divide the interior of the outer frame into three sub-chambers from bottom to top.

3. A cast-in-place box girder according to claim 2, characterized in that: The three sub-chambers are respectively the first chamber, the second chamber and the third chamber from bottom to top, and the multiple V-shaped plates are respectively multiple first V-shaped plates, multiple second V-shaped plates and multiple third V-shaped plates, multiple first V-shaped plates are arranged in the first chamber, multiple second V-shaped plates are arranged in the second chamber, and multiple third V-shaped plates are arranged in the third chamber.

4. The cast-in-place box girder according to claim 3, characterized in that: Three first V-shaped plates are arranged in the first chamber, three second V-shaped plates are arranged in the second chamber, and two third V-shaped plates are arranged in the third chamber.

5. The cast-in-place box girder according to claim 3, characterized in that: The included angles of the first V-shaped plate, the second V-shaped plate and the third V-shaped plate increase sequentially.

6. The cast-in-place box girder according to claim 3, characterized in that: The plurality of first V-shaped plates are integrally formed, the plurality of second V-shaped plates are integrally formed, and the plurality of third V-shaped plates are integrally formed.

7. The cast-in-place box girder according to claim 3, characterized in that: The outer frame includes a bottom plate, a side support plate and a top plate; the two side support plates are arranged on both sides of the bottom plate, and the top plate is arranged on the top of the two side support plates.

8. The cast-in-place box girder according to claim 7, characterized in that: The side support plate includes a first vertical plate, an inclined plate, and a second vertical plate connected in sequence; the first vertical plate, the first partition plate, and the bottom plate together form the first chamber, the inclined plate, the first partition plate, and the second partition plate together form the second chamber, and the second vertical plate, the second partition plate, and the top plate together form the third chamber.

9. The cast-in-place box girder according to claim 7, characterized in that: The two side support plates are symmetrically arranged.

10. The cast-in-place box girder according to claim 7, characterized in that: The bottom plate and the top plate are arranged in a flat shape.

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