High-standard farmland split prefabricated drainage box culvert bridge

Abstract

The utility model discloses a high -standard farmland split prefabricated drainage box culvert bridge, including culvert bridge main part and both sides retaining wall, culvert bridge main part is including a plurality of drainage box body, is equipped with the drainage hole of penetrating left and right sides end face in the drainage box body, has a plurality of closed sleeve in the drainage box body, and the closed sleeve penetrates left and right sides end face of the drainage box body, and the left and right parts of drainage box body still have opened a plurality of embedded holes and a plurality of T-shaped recesses, a plurality of drainage box body are closely arranged in proper order, and a plurality of closed sleeve are communicated respectively and constitute a plurality of independent anchoring through -hole, and the drainage box body still is fixed through a plurality of connecting components between, and split prefabricated drainage box culvert bridge is composed of reinforced concrete structure prefabricated component, and it belongs to prefabricated component, can realize modularization, industrialization production, and greatly shorten the engineering cycle.

Description

Technical Field

[0001] This utility model relates to a farmland drainage box culvert bridge technology, and in particular to a high-standard farmland split prefabricated drainage box culvert bridge that is fixed with high-strength double-headed bolts. Background Technology

[0002] Traditional farmland drainage box culvert bridges are typically constructed by on-site steel reinforcement binding, formwork erection, and concrete pouring. In contrast, prefabricated drainage box culvert bridges are manufactured in factories, requiring only on-site assembly, which greatly shortens the construction cycle. This makes them particularly suitable for projects with tight schedules. Furthermore, factory prefabrication ensures better quality of bridge components and construction safety, making them even more beneficial for high-standard farmland.

[0003] The invention with application number CN202410510021.1 relates to a prefabricated box culvert, comprising: a bottom mold (1) and a top mold (2), both L-shaped to reduce transportation space; a fixing screw (3) set at the end of the bottom mold (1), and the top mold (2) having a cylindrical through hole corresponding to the fixing screw (3); a fixing bolt (300) screwed onto the fixing screw (3) for fastening the bottom mold (1) and the top mold (2); the top mold (2) is aligned and installed onto the bottom mold (1) by the fixing screw (3), and the fixing bolt (300) is used to fasten the top mold (2) onto the bottom mold (1); the bottom mold (1) and the top mold (2) are themselves in a 90-degree shape to achieve the positioning and assembly of the square box culvert.

[0004] However, the aforementioned prefabricated composite box culverts have many assembly component nodes and poor overall integrity. In addition, the bottom formwork and top formwork are connected by a method of upper and lower hole alignment, which requires high hoisting standards and makes construction difficult.

[0005] The utility model application with application number CN202321354559.5 relates to a prefabricated box culvert, comprising: several standard box culvert units (1) and several dredging box culvert units (2), characterized in that: one end of each of the standard box culvert units (1) and the dredging box culvert units (2) is provided with an annular limiting head (3), and the other end of each of the standard box culvert units (1) and the dredging box culvert units (2) is provided with an annular limiting groove (4) matching the annular limiting head (3), and the top of the dredging box culvert unit (2) is provided with a dredging pipe culvert assembly (5), which is composed of a dredging pipe culvert body (6), a cover (7) and a sealing ring (8). The cover (7) is located at the top of the dredging pipe culvert body (6), and the sealing ring (8) is connected between the dredging pipe culvert body (6) and the dredging box culvert unit (2). The interior of the dredging pipe culvert body (6) is provided with a dredging chamber (9) communicating with the dredging box culvert unit (2).

[0006] However, the aforementioned precast box culverts only serve the purpose of dredging; they do not address the reliable connection between box culvert units or the construction of earth retaining walls for drainage ditches. Utility Model Content

[0007] The purpose of this utility model is to provide a high-standard prefabricated drainage box culvert bridge for farmland, so as to solve the problems mentioned in the background art above:

[0008] (1) How to design a split prefabricated drainage box culvert bridge that can be quickly installed and used in high-standard farmland.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A high-standard prefabricated drainage box culvert bridge for farmland;

[0011] The culvert includes a main body and two retaining walls. The main body includes several drainage boxes. Each drainage box has drainage holes that penetrate the left and right end faces. Several closed sleeves are pre-embedded in the drainage box next to the drainage holes. The closed sleeves penetrate the left and right end faces of the drainage box. The left and right sides of the drainage box also have several pre-embedded holes and several T-shaped grooves. If the pre-embedded holes and the T-shaped grooves correspond one-to-one, one end of the pre-embedded hole extends to the left or right end face of the drainage box, and the other end of the pre-embedded hole communicates with the corresponding T-shaped groove.

[0012] Several drainage boxes are arranged in a close sequence, and the drainage holes of the drainage boxes are connected to form a drainage channel. Several closed sleeves of the drainage boxes are connected to form several independent anchoring through holes. Several anchoring steel bars pass through the anchoring channels of the drainage boxes, and the two ends of the anchoring steel bars are fixed to two drainage boxes on both sides respectively. Any two adjacent drainage boxes are also fixed by several connecting components. The connecting components include high-strength double-ended bolts and two nuts. The high-strength double-ended bolts pass through the pre-embedded holes corresponding to the two adjacent drainage boxes. The two ends of the high-strength double-ended bolts extend into the T-shaped grooves corresponding to the two drainage boxes respectively. The two ends of the high-strength double-ended bolts are respectively engaged with the two nuts.

[0013] The retaining walls on both sides are fixedly connected to the side walls on both sides of the main body of the culvert.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the connecting assembly also includes two washers, two nuts corresponding to the two washers, the two washers being fitted onto both ends of the high-strength double-ended bolt, the two washers abutting against the groove walls of the corresponding T-shaped grooves of two adjacent drainage tanks, and the two nuts abutting against the two washers respectively.

[0016] Furthermore, the high-strength double-ended bolts of the connecting assembly are threaded rods of grade 10.9 or higher.

[0017] Furthermore, the drainage box is a precast reinforced concrete structure, and reinforcing ribs are added to several pre-reserved closed sleeves and several pre-embedded holes inside the drainage box, and reinforcing hoops are added to the four corners of the drainage box.

[0018] Furthermore, the retaining wall is fixedly connected to the side wall of the drainage tank of the culvert body through several connectors.

[0019] Furthermore, the connector is made of L200. 150 The angle steel is of specification 10, and the connecting parts are fixed to the corresponding retaining wall and the side wall of the corresponding drainage tank by bolts.

[0020] The beneficial technical effects of this high-standard farmland prefabricated drainage box culvert bridge are as follows:

[0021] (1) The prefabricated drainage box culvert is composed of prefabricated reinforced concrete structural components. The layering is reasonable and feasible, and the performance is good. Because it is a prefabricated component, it can realize modular and industrialized production, which greatly shortens the project cycle.

[0022] (2) Due to the characteristics of hard material, high density and good mechanical properties, prefabricated drainage box bridges can be used safely under high pressure.

[0023] (3) The prefabricated drainage box bridge is made of corrosion-resistant materials, which makes it well-suited for transporting sewage in farmland ditches.

[0024] (4) Because the components of the prefabricated drainage box culvert are simple and clear, the maintenance cost is relatively low. Attached Figure Description

[0025] Figure 1 This is a front view of the usage status of this high-standard farmland prefabricated drainage box culvert embodiment.

[0026] Figure 2 yes Figure 1 The left view.

[0027] Figure 3 This is a front view of the drainage box in an embodiment of the prefabricated drainage box culvert bridge for high-standard farmland.

[0028] Figure 4 This is a cross-sectional view of the connecting components in use in an embodiment of the prefabricated drainage box culvert for high-standard farmland.

[0029] Explanation of the labels in the diagram:

[0030] Culvert main body - 100; Drainage box - 110; Drainage hole - 111; Sealing sleeve - 112; Embedded hole - 113; T-shaped groove - 114; Anchoring steel bar - 200; High-strength double-ended bolt - 310; Washer - 320; Nut - 330; Retaining wall - 400; Connector - 410. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Please see Figures 1 to 4 .

[0035] This high-standard farmland prefabricated drainage box culvert bridge consists of a culvert body of 100 and two retaining walls of 400 on both sides.

[0036] The main body 100 of the culvert includes multiple drainage boxes 110. The drainage boxes 110 are finished components made by casting steel molds, binding steel reinforcement frames in the factory, pouring concrete in the factory, and curing in the factory. The drainage boxes 110 have drainage holes 111 that penetrate the left and right end faces. Four closed sleeves 112 are pre-embedded in the drainage boxes 110 next to the drainage holes 111. The four closed sleeves 112 are distributed at the four corners of the drainage boxes 110. The closed sleeves 112 penetrate the left and right end faces of the drainage boxes 110. The closed sleeves 112 are welded to the steel reinforcement frames of the drainage boxes 110 by steel bars with a diameter of 16mm. The weld grade is not lower than level two and the weld leg height is 6mm.

[0037] The drainage tank 110 also has four pre-embedded holes 113 and four T-shaped grooves 114 on the left and right sides. The direction of the pre-embedded holes 113 is consistent with the direction of the closed sleeve 112. The four pre-embedded holes 113 and the four T-shaped grooves 114 correspond one-to-one. One end of the pre-embedded hole 113 extends to the left or right end face of the drainage tank 110, and the other end of the pre-embedded hole 113 communicates with the corresponding T-shaped groove 114. The pre-embedded holes 113 are pre-embedded in the steel keel of the drainage tank 110. Their positioning is fixed by tie wire, which can achieve precise positioning and ensure a reliable connection between the drainage tanks 110 and the drainage tank 110.

[0038] Reinforcing ribs are added to the four pre-reserved closed sleeves 112 and several pre-embedded holes 113 inside the drainage tank 110, and reinforcing hoops are added to the four corners of the drainage tank 110.

[0039] Four drainage boxes 110 are arranged closely in sequence along the left and right direction. The drainage holes 111 of the four drainage boxes 110 are connected to form a drainage channel. The four closed sleeves 112 of the four drainage boxes 110 are connected to form several independent anchoring through holes. Four anchoring steel bars 200 pass through the anchoring channels of several drainage boxes 110, and the two ends of the anchoring steel bars 200 are fixed to two drainage boxes 110 located on the left and right sides respectively.

[0040] Any two adjacent drainage tanks 110 are further fixed together by two sets of connecting components. These connecting components include high-strength double-ended bolts 310, two washers 320, and two nuts 330. The high-strength double-ended bolts 310 are precision-machined in a factory according to the length of the connecting bridge section, and their mechanical properties meet the requirements. The high-strength double-ended bolts 310 penetrate through the pre-embedded holes 113 corresponding to the two adjacent drainage tanks 110, and the two ends of the high-strength double-ended bolts 310 extend into the corresponding T-shaped grooves 11 of the two drainage tanks 110. Inside 4, the two ends of the high-strength double-ended bolt 310 are respectively engaged with two nuts 330, and the two nuts 330 correspond one-to-one with two washers 320. The two washers 320 are fitted on both ends of the high-strength double-ended bolt 310. The high-strength double-ended bolt 310 is a threaded rod of grade 10.9 or above. Both ends can be tightened with nuts. The two washers 320 abut against the groove walls of the corresponding T-shaped grooves 114 of the two adjacent drainage tanks 110, and the two nuts 330 abut against the two washers 320.

[0041] The retaining walls 400 at both ends of the main body 100 of the culvert are also finished components made by casting steel molds, tying steel reinforcement frames in the factory, pouring concrete in the factory, and curing in the factory.

[0042] The retaining wall 400 is fixed to the side wall of the drainage box 110 of the culvert body 100 by several connectors 410. The connectors 410 are L200. 150 It is composed of 10-specification angle steel and triangular stiffening ribs of 120x170x10 welded together. The connecting piece 410 is fixed to the side wall of the corresponding retaining wall 400 and the corresponding drainage box 110 by bolts.

[0043] The above description is only one embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the principle of the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A high-standard prefabricated drainage box culvert bridge for farmland, characterized by: The culvert includes a main body (100) and two retaining walls (400) on both sides. The main body (100) includes several drainage boxes (110). The drainage boxes (110) are provided with drainage holes (111) that penetrate the left and right end faces. Several closed sleeves (112) are pre-embedded in the drainage boxes (110). The closed sleeves (112) penetrate the left and right end faces of the drainage boxes (110). The left and right sides of the drainage boxes (110) also have several pre-embedded holes (113) and several T-shaped grooves (114). If the pre-embedded holes (113) and several T-shaped grooves (114) correspond one to one, one end of the pre-embedded hole (113) extends to the left or right end face of the drainage box (110), and the other end of the pre-embedded hole (113) communicates with the corresponding T-shaped groove (114). A number of drainage boxes (110) are arranged in close sequence. The drainage holes (111) of the drainage boxes (110) are connected to form a drainage channel. The closed sleeves (112) of the drainage boxes (110) are connected to form a number of independent anchoring through holes. A number of anchoring steel bars (200) pass through the anchoring channels of the drainage boxes (110), and the two ends of the anchoring steel bars (200) are respectively fixed to two drainage boxes (110) on both sides. Any two adjacent drainage boxes (110) are also fixed by a number of connecting components. The connecting components include high-strength double-ended bolts (310) and two nuts (330). The high-strength double-ended bolts (310) pass through the pre-embedded holes (113) corresponding to the two adjacent drainage boxes (110). The two ends of the high-strength double-ended bolts (310) extend into the T-shaped grooves (114) corresponding to the two drainage boxes (110). The two ends of the high-strength double-ended bolts (310) are respectively engaged with the two nuts (330). The two retaining walls (400) are fixedly connected to the two side walls of the main body of the culvert (100).

2. The high-standard farmland modular prefabricated drainage box culvert bridge according to claim 1, characterized in that: The connecting assembly also includes two washers (320), two nuts (330) corresponding to the two washers (320), the two washers (320) are fitted on both ends of the high-strength double-ended bolt (310), the two washers (320) abut against the groove walls of the corresponding T-shaped grooves (114) of the two adjacent drainage tanks (110), and the two nuts (330) abut against the two washers (320).

3. The high-standard farmland prefabricated drainage box culvert bridge according to claim 2, characterized in that: The high-strength double-ended bolt (310) of the connecting assembly is a threaded rod of grade 10.9 or higher.

4. The high-standard farmland modular prefabricated drainage box culvert bridge according to claim 1, characterized in that: The drainage box (110) is a precast reinforced concrete structure. Reinforcing bars are added to several pre-reserved closed sleeves (112) and several pre-embedded holes (113) inside the drainage box (110). Reinforcing hoops are added to the four corners of the drainage box (110).

5. The high-standard farmland modular prefabricated drainage box culvert bridge according to claim 1, characterized in that: The retaining wall (400) is fixedly connected to the side wall of the drainage box (110) of the culvert body (100) through several connectors (410).

6. The high-standard farmland modular prefabricated drainage box culvert bridge according to claim 5, characterized in that: The connector (410) is made of L200. 150 The angle steel is of specification 10, and the connector (410) is fixed to the side wall of the corresponding retaining wall (400) and the corresponding drainage box (110) by bolts.

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