Fabricated box culvert structure suitable for multi-tongue-and-groove splicing

Abstract

The utility model provides an assembly type box culvert structure suitable for multiple tongue-and-groove splicing, which comprises a concave prefabricated box culvert bottom plate, a concave prefabricated box culvert top plate and prefabricated box culvert side walls, and the prefabricated box culvert bottom plate, the prefabricated box culvert side walls and the prefabricated box culvert top plate are spliced to form a frame structure. The prefabricated box culvert bottom plate and the prefabricated box culvert side walls as well as the prefabricated box culvert side walls and the prefabricated box culvert top plate are in tongue-and-groove connection through prefabricated steel connecting pieces; flexible rabbets of a common assembly type box culvert are improved into the rigid rabbets, compared with original hinge joint and rigid connection, shearing force and bending moment can be transmitted, the overall strength and stability of the box culvert are greatly improved, the free flexibility of the assembly type box culvert is combined, and the rigid rabbets can be applied to various complex working conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of box culvert construction, and in particular relates to an assembled box culvert structure suitable for multiple tongue and groove splicing. Background Art

[0002] A box culvert is a large-scale water conservancy engineering structure, usually used in rivers, channels or roads, underpasses, two-way intersections or level crossings, to achieve the purpose of pumping, diversion, drainage, etc. Compared with other culverts, the cross-section of a box culvert is more regular, usually rectangular, square, pebble or oval, with a relatively stable structure and can withstand large loads.

[0003] With the development of highway construction and the continuous advancement of quality engineering, construction units have higher and higher requirements for the standardization, refinement and factoryization of culvert construction technology. In the highway construction area, due to the needs of people's lives and drainage, a large number of culverts are set up in the roadbed construction section. During the roadbed construction process, the early access road was blocked, resulting in the inability to construct the culvert. After the access road was completed, the construction of the culvert began immediately. Affected by rainy weather, it would seriously restrict the progress of roadbed construction. In order to improve the construction efficiency of the culvert and avoid the impact of construction on rainy days, the culvert adopts factory-based centralized prefabrication. According to the progress of roadbed construction, the prefabricated parts are transported to the site for assembly in time, which improves the efficiency of culvert construction. At the same time, factory-based centralized construction is adopted to ensure the construction quality.

[0004] In the prior art, prefabricated box culverts are usually constructed by centralized production of prefabricated culvert sections and on-site assembly. Multiple box culverts are assembled together, and the joints between the multiple box culverts are filled with cement. Only the culvert foundation and the bottom plate reinforced concrete need to be constructed on site, and the on-site work volume is small. In actual projects, due to the site, weather, and uneven quality of on-site technicians, the splicing construction and maintenance quality of the box culvert tongue and groove are uneven; for the prefabricated box culvert structure with multiple tongue and groove splicing, only using cement filling greatly reduces the structural strength and overall stability of the box culvert, as well as the waterproof effect.

[0005] Therefore, there is an urgent need for an assembled box culvert structure to solve the above problems and ensure the construction efficiency as well as the safety and stability of the assembled box culvert during the construction process. Summary of the invention

[0006] The purpose of the utility model is to provide an assembled box culvert structure suitable for multiple tongue and groove splicing, which solves the problem that the existing assembled box culvert structure with multiple tongue and groove splicing only uses cement filling, which greatly reduces the structural strength and overall stability of the box culvert, as well as the waterproof effect; the box culvert structure provided by the utility model is obviously economical and practical, can ensure the strength and overall stability of the tongue and groove connection of the assembled box culvert, and provides a new idea for improving the stress characteristics of the assembled box culvert.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The utility model provides an assembled box culvert structure suitable for multiple tongue-and-groove splicing, comprising a concave prefabricated box culvert bottom plate, a concave prefabricated box culvert top plate and prefabricated box culvert side walls, wherein the prefabricated box culvert bottom plate, the prefabricated box culvert side walls and the prefabricated box culvert top plate are spliced ​​to form a frame structure, and the prefabricated box culvert bottom plate and the prefabricated box culvert side walls, as well as the prefabricated box culvert side walls and the prefabricated box culvert top plate are all connected by tongue-and-groove prefabricated steel connecting pieces.

[0009] Preferably, the prefabricated steel connector comprises an upper connector and a lower connector, wherein:

[0010] Both ends of the box culvert bottom plate are provided with lower connecting pieces;

[0011] Upper connecting pieces are provided at both ends of the top of the box culvert;

[0012] An upper connecting piece is provided at one end of the box culvert side wall, and the upper connecting piece is tongue-and-groove connected to a lower connecting piece on the box culvert bottom plate;

[0013] The other end of the box culvert side wall is provided with a lower connecting piece, and the lower connecting piece is tongue-and-groove connected with the upper connecting piece on the box culvert top plate.

[0014] Preferably, the lower connecting member comprises a steel convex member, and a plurality of anchor rods are arranged on an end surface of the steel convex member opposite to the convex surface, wherein:

[0015] The lower connecting piece on the box culvert bottom plate is fixedly connected to the box culvert bottom plate through corresponding anchor rods;

[0016] The lower connecting piece arranged at the other end of the box culvert side wall is fixedly connected to the box culvert side wall through a corresponding anchor rod.

[0017] Preferably, the upper connecting member comprises a steel concave member, and a plurality of anchor rods are arranged on an end surface of the steel concave member opposite to the concave surface, wherein:

[0018] The upper connecting piece on the box culvert top plate is fixedly connected to the box culvert top plate through corresponding anchor rods;

[0019] An upper connecting piece arranged at one end of the box culvert side wall is fixedly connected to the box culvert side wall through a corresponding anchor rod.

[0020] Preferably, the tongue-and-groove connection between the upper connecting member and the lower connecting member is welded.

[0021] Preferably, a rubber ring is mounted on the tongue-and-groove connection between the upper connecting member and the lower connecting member.

[0022] Preferably, the connection between the upper connecting member and the lower connecting member is filled with flat foam.

[0023] Preferably, the tongue-and-groove connection between the upper connecting member and the lower connecting member is welded, wherein the weld formed by the welding connection is filled with flat foam; and the welding connection is sleeved with a rubber ring.

[0024] Preferably, at least one pair of prefabricated box culvert side walls is arranged between the prefabricated box culvert bottom plate and the prefabricated box culvert top plate.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The utility model provides an assembled box culvert structure suitable for multiple tongue and groove splicing. Since the damage of assembled culverts often occurs at the intersection, the utility model improves the flexible tongue and groove of the general assembled box culvert into a rigid tongue and groove. Compared with the original hinge, the rigid connection can not only transmit shear force but also transmit bending moment, which greatly improves the overall strength and stability of the box culvert. Combined with the freedom and flexibility of the assembled box culvert, the utility model can be used in various complex working conditions.

[0027] Furthermore, the utility model changes the cement filling at the tongue-and-groove joints of the assembled culvert to welding, and seals with rubber rings, which not only improves the strength but also increases the waterproof effect.

[0028] In summary, for prefabricated box culverts with multiple tongues and grooves, the more tongues and grooves there are, the worse its stability is, and the worse its waterproof effect is. The utility model utilizes steel connectors to solve these problems of multiple tongues and grooves, and can make the prefabricated box culvert adopt multi-section splicing, flexibly control the size of the box culvert, and increase the flexibility and practicality of the prefabricated box culvert. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 : Overall schematic diagram of assembled box culvert;

[0030] Figure 2 : Partial schematic diagram of prefabricated culvert;

[0031] Figure 3 : Schematic diagram of steel connector;

[0032] Figure 4 : Front view of assembled box culvert;

[0033] Figure 5 : Front view of steel connector;

[0034] Figure 6 : Side view of steel connector;

[0035] Figure 7 : Sectional view of steel connector;

[0036] Figure 8 : Exploded view of steel connector;

[0037] Among them, 1-1 box culvert bottom plate, 1-2 box culvert side wall, 1-3 box culvert top plate, 2-1 anchor rod, 2-2 steel concave component, 2-3 rubber ring, 2-4 steel convex component, 2-5 weld, 2-6 upper connecting piece and 2-7 lower connecting piece. DETAILED DESCRIPTION

[0038] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0039] Example 1

[0040] The present embodiment provides an assembled box culvert structure suitable for multiple tongue-and-groove splicing, comprising a concave prefabricated box culvert bottom plate 1-1, a concave prefabricated box culvert top plate 1-3 and a prefabricated box culvert side wall 1-2, wherein the box culvert bottom plate 1-1, the prefabricated box culvert side wall 1-2 and the box culvert top plate 1-3 are spliced ​​to form a frame structure.

[0041] The prefabricated box culvert bottom plate 1-1 and the prefabricated box culvert side wall 1-2, and the prefabricated box culvert side wall 1-2 and the prefabricated box culvert top plate 1-3 are all connected by steel connectors 2.

[0042] Example 2

[0043] On the basis of Example 1, this embodiment provides an assembled box culvert structure suitable for multiple tongue and groove splicing, including a concave prefabricated box culvert bottom plate 1-1, a prefabricated box culvert side wall 1-2 and a concave prefabricated box culvert top plate 1-3, wherein the prefabricated box culvert side wall 1-2 is provided with two, and the two prefabricated box culvert side walls 1-2 are respectively arranged on the two tops of the box culvert bottom plate 1-1; the two tops of the box culvert top plate 1-3 are respectively connected to the free ends of the two prefabricated box culvert side walls 1-2; the prefabricated box culvert bottom plate 1-1, the prefabricated box culvert side wall 1-2 and the prefabricated box culvert top plate 1-3 are spliced ​​to form a frame structure.

[0044] The prefabricated box culvert bottom plate 1-1 and the two prefabricated box culvert side walls 1-2, and the prefabricated box culvert top plate 1-3 and the two prefabricated box culvert side walls 1-2 are connected via steel connectors 2.

[0045] Example 3

[0046] On the basis of Example 1, this embodiment provides an assembled box culvert structure suitable for multiple tongue-and-groove splicing, wherein the steel connector 2 includes a lower connector 2-7 and an upper connector 2-6, wherein: lower connectors are provided at both ends of the box culvert bottom plate;

[0047] Upper connecting pieces are provided at both ends of the top of the box culvert;

[0048] An upper connecting piece is provided at one end of the box culvert side wall, and the upper connecting piece is tongue-and-groove connected to a lower connecting piece on the box culvert bottom plate;

[0049] The other end of the box culvert side wall is provided with a lower connecting piece, and the lower connecting piece is tongue-and-groove connected with the upper connecting piece on the box culvert top plate.

[0050] Example 4

[0051] On the basis of Example 3, this embodiment provides an assembled box culvert structure suitable for multiple tongue-and-groove splicing, wherein the upper connecting member includes a steel concave member 2-2, and a plurality of anchor rods 2-1 are evenly distributed on an end surface of the steel concave member 2-2 opposite to the concave surface, wherein:

[0052] The upper connecting piece on the box culvert top plate is fixedly connected to the box culvert top plate through corresponding anchor rods;

[0053] An upper connecting piece arranged at one end of the box culvert side wall is fixedly connected to the box culvert side wall through a corresponding anchor rod.

[0054] The lower connecting member comprises a steel convex member 2-3, and a plurality of anchor rods are evenly distributed on an end surface of the steel convex member opposite to the convex surface, wherein:

[0055] The lower connecting piece on the box culvert bottom plate is fixedly connected to the box culvert bottom plate through corresponding anchor rods;

[0056] The lower connecting piece arranged at the other end of the box culvert side wall is fixedly connected to the box culvert side wall through a corresponding anchor rod.

[0057] Example 5

[0058] On the basis of Example 4, this example provides an assembled box culvert structure suitable for multiple tongue-and-groove splicing, wherein the connection between the steel concave component 2-2 and the steel convex component 2-3 is welded.

[0059] Example 6

[0060] On the basis of Example 4, this example provides an assembled box culvert structure suitable for multiple tongue-and-groove splicing, wherein a rubber ring 2-3 is sleeved at the connection between the steel concave component 2-2 and the steel convex component 2-3.

[0061] Example 7

[0062] The present embodiment provides an assembled box culvert structure suitable for multiple tongue-and-groove splicing, comprising a concave prefabricated box culvert bottom plate 1-1, a prefabricated box culvert side wall 1-2 and a concave prefabricated box culvert top plate 1-3, wherein the prefabricated box culvert side wall 1-2 is provided with multiple, and the prefabricated box culvert bottom plate 1-1, multiple prefabricated box culvert side walls 1-2 and the prefabricated box culvert top plate 1-3 are spliced ​​to form a frame structure.

[0063] Example 8

[0064] The present embodiment provides an assembly method for a prefabricated box culvert structure suitable for multiple tongue-and-groove splicing, comprising the following steps:

[0065] Prefabricated box culvert structure

[0066] Step 1: Select the commonly used span according to the drainage, pedestrian and vehicle passing requirements of the expressway. According to the crane level of the construction unit, the sections and cross-sections are reasonably divided. The smaller span box culvert can split the overall cross-section into three parts, which are assembled by "box culvert top plate 1-3 + box culvert side wall 1-2 + box culvert bottom plate 1-1"; the larger span prefabricated culvert splits the overall cross-section into multiple parts, which are assembled by "box culvert top plate 1-3 + n pieces of box culvert side wall 1-2 + box culvert bottom plate 1-1".

[0067] Step 2: Pass the anchor rod 2-1 through the reserved holes of the steel concave component 2-2 and the steel convex component 2-4 and weld them to form the upper connecting piece 2-6 and the lower connecting piece 2-7. The steel connecting piece 2 is composed of the upper connecting piece 2-6 and the lower connecting piece 2-7, which are aligned and assembled, and the whole is painted for corrosion protection.

[0068] Step 3: Make the box culvert bottom plate 1-1, the box culvert side wall 1-2 and the box culvert top plate 1-3 respectively. When making the box culvert bottom plate 1-1, pour concrete to the box culvert bottom plate 1-1 tongue and place the prefabricated lower connector 2-7; when making the box culvert side wall 1-2, first place the upper connector 2-6 at the bottom of the template, and then place the lower connector 2-7 when pouring concrete to the upper tongue; when making the box culvert top plate 1-3, pour concrete to the box culvert top plate 1-3 tongue and place the prefabricated upper connector 2-6.

[0069] Step 4: After the concrete is poured, cover it with geotextile and use spraying to cure it. When it reaches the lifting strength, hoist it into the curing pool for all-round immersion curing.

[0070] Install box culvert

[0071] Step 5: After the box culvert bottom plate 1-1, the box culvert top plate 1-3 and several box culvert side walls 1-2 are transported to the construction site, they are assembled on site. The upper connectors 2-6 and the lower connectors 2-7 of the culvert bottom plate 1-1, the box culvert side walls 1-2 and the box culvert top plate 1-3 are welded to form an integral box culvert, and the tongue-and-groove weld 2-5 is filled with flat foam and wrapped with a sealing rubber ring 2-3.

[0072] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An assembled box culvert structure suitable for multiple tongue-and-groove splicing, characterized in that: It includes a concave prefabricated box culvert bottom plate, a concave prefabricated box culvert top plate and a prefabricated box culvert side wall, wherein the prefabricated box culvert bottom plate, the prefabricated box culvert side wall and the prefabricated box culvert top plate are spliced ​​to form a frame structure, and the prefabricated box culvert bottom plate and the prefabricated box culvert side wall, and the prefabricated box culvert side wall and the prefabricated box culvert top plate are all connected by tongue-and-groove prefabricated steel connectors.

2. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 1, characterized in that: The prefabricated steel connector includes an upper connector and a lower connector, wherein: Both ends of the box culvert bottom plate are provided with lower connecting pieces; Upper connecting pieces are provided at both ends of the top of the box culvert; An upper connecting piece is provided at one end of the box culvert side wall, and the upper connecting piece is tongue-and-groove connected to a lower connecting piece on the box culvert bottom plate; The other end of the box culvert side wall is provided with a lower connecting piece, and the lower connecting piece is tongue-and-groove connected with the upper connecting piece on the box culvert top plate.

3. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 2, characterized in that: The lower connecting member comprises a steel convex member, and a plurality of anchor rods are arranged on an end surface of the steel convex member opposite to the convex surface, wherein: The lower connecting piece on the box culvert bottom plate is fixedly connected to the box culvert bottom plate through corresponding anchor rods; The lower connecting piece arranged at the other end of the box culvert side wall is fixedly connected to the box culvert side wall through a corresponding anchor rod.

4. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 2 is characterized in that: The upper connecting member comprises a steel concave member, and a plurality of anchor rods are arranged on an end surface of the steel concave member opposite to the concave surface, wherein: The upper connecting piece on the box culvert top plate is fixedly connected to the box culvert top plate through corresponding anchor rods; An upper connecting piece arranged at one end of the box culvert side wall is fixedly connected to the box culvert side wall through a corresponding anchor rod.

5. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 2, characterized in that: The tongue-and-groove connection between the upper connecting piece and the lower connecting piece is welded.

6. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 2, characterized in that: A rubber ring is sleeved on the tongue-and-groove connection between the upper connecting piece and the lower connecting piece.

7. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 2, characterized in that: The connection between the upper connecting piece and the lower connecting piece is filled with flat foam.

8. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 2, characterized in that: The tongue-and-groove connection between the upper connecting member and the lower connecting member is welded, wherein the weld formed by the welding connection is filled with flat foam; and the welding connection is sleeved with a rubber ring.

9. The assembled box culvert structure suitable for multiple tongue-and-groove splicing according to claim 1, characterized in that: At least one pair of prefabricated box culvert side walls is arranged between the prefabricated box culvert bottom plate and the prefabricated box culvert top plate.

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