Prefabricated assembled ditch

By setting a pre-reserved groove at the joint of the prefabricated water ditch and filling it with a rubber water-stop pad, combined with bolt connection, the problem of leakage at the joint of the prefabricated water ditch is solved, achieving rapid construction and excellent anti-leakage effect, and enhancing the rigidity and reusability of the water ditch.

CN224314318UActive Publication Date: 2026-06-02CHINA RAILWAY SHANGHAI DESIGN INST GRP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY SHANGHAI DESIGN INST GRP CO LTD
Filing Date
2025-04-28
Publication Date
2026-06-02

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Abstract

This utility model relates to the field of civil engineering technology, specifically to a prefabricated assembled ditch. The prefabricated ditch body has outwardly protruding wing plates on both sides, with connection holes on the wing plates. The two end faces of the prefabricated ditch body also have reserved grooves for installing rubber waterstops. The advantages of this utility model are: 1) It is prefabricated in a reinforced concrete factory, ensuring controllable quality and precision; 2) The joints of the prefabricated assembled ditch are sealed with rubber waterstops, providing excellent anti-leakage performance; 3) The prefabricated assembled ditch uses bolt connections, which are fast, efficient, and easy to install and dismantle; in some cases, it can be recycled and reused; 4) The outward protrusion of the concrete structure at the joints of the prefabricated assembled ditch forms buttresses, enhancing the rigidity of the ditch sidewalls; 5) It has good reliability, good innovation and application value, and is worthy of promotion.
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Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, specifically to a prefabricated assembled drainage ditch, which is mainly used in municipal engineering and railway drainage ditches where leakage control of pipelines or ditches is required. It can also be used in drainage ditches under special geological conditions, such as in collapsible soil areas. Background Technology

[0002] Precast drainage ditches, due to their rapid construction, have seen some applications in municipal engineering. However, they typically employ splicing and overlapping methods, leading to poor joint quality, frequent leaks, and overall subpar quality. These precast drainage ditches are less commonly used in projects with stringent waterproofing requirements or in areas where replacement is not feasible, such as drainage ditches in high-grade railway and highway tunnels, where higher standards are required for joint and overall assembly quality. Summary of the Invention

[0003] The purpose of this utility model is to address the shortcomings of the prior art by providing a prefabricated assembled drainage ditch. This ditch is constructed by pre-reserving grooves on the end face of the joint, filling the grooves with elastic rubber water-stop pads, and then tightening bolts to complete the assembly and form an effective water-stop structure. This achieves excellent joint anti-leakage performance while enabling quick and convenient construction.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A prefabricated assembled ditch includes a prefabricated ditch body, characterized in that: outwardly protruding wing plates are respectively provided on both ends of the prefabricated ditch body, and connecting holes are provided on the wing plates; reserved grooves for installing rubber waterstop pads are respectively provided on both end faces of the prefabricated ditch body.

[0006] The two prefabricated ditch bodies assembled adjacent to each other are fixedly connected by connectors screwed into the connection holes, which at the same time compresses the rubber waterstop pad installed in the reserved groove.

[0007] The reserved groove extends along the cross-sectional direction of the prefabricated ditch body.

[0008] Along the height direction of the wing plate, a plurality of connection holes are evenly spaced apart on the wing plate.

[0009] The prefabricated ditch body is either straight or curved, and both types have wing plates, connecting holes, and reserved grooves on their end faces.

[0010] The interior of the prefabricated ditch body is provided with a steel mesh corresponding to the position of the connecting hole.

[0011] The advantages of this utility model are:

[0012] 1) The reinforced concrete is prefabricated in the factory, and the quality and precision are controllable.

[0013] 2) The joints of the prefabricated assembled drainage ditch are sealed with rubber pads, which have excellent anti-leakage performance.

[0014] 3) The prefabricated assembled drainage ditch is connected by bolts, which is fast, efficient and easy to install and dismantle; in some cases, it can be recycled and reused.

[0015] 4) The prefabricated and assembled drainage ditch has a convex concrete structure at the joint, which acts as a buttress column and can enhance the rigidity of the drainage ditch sidewall.

[0016] 5) It has good reliability, good innovation and application value, and is worth promoting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the joint structure in this utility model.

[0019] Figure 3 This is a schematic diagram of the joint structure during assembly in this utility model. Detailed Implementation

[0020] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0021] like Figure 1-3 As shown in the figure, numbers 1-5 represent: 1. Prefabricated water ditch body, 2. Bolt hole, 3. Reserved groove, 4. Water-stop rubber pad, and 5. Wing plate, respectively.

[0022] Example: Figures 1 to 3 As shown, the prefabricated assembled ditch in this embodiment includes a prefabricated ditch body 1. The prefabricated assembled ditch is assembled by using the prefabricated ditch body 1 as a unit, that is, several prefabricated ditch bodies 1 are combined and assembled to form a prefabricated assembled ditch.

[0023] like Figure 1 As shown, outwardly protruding wing plates 5 are respectively provided on both ends of the prefabricated ditch body 1. Bolt holes 2 are provided on the wing plates 5 as connection holes. Along the height direction of the wing plates 5, three bolt holes 2 are evenly spaced on the wing plates 5. The number of bolt holes 2 can be designed according to the actual working conditions, such as the connection strength between the prefabricated ditch bodies 1.

[0024] In this embodiment, in order to ensure the connection strength of the prefabricated ditch body 1, a steel mesh is provided inside the prefabricated ditch body 1 at the position corresponding to the bolt hole 2, so as to better withstand local pressure.

[0025] Combination Figure 1 and Figure 2 As shown, pre-reserved grooves 3 for installing rubber water-stop pads 4 are respectively provided on both end faces of the prefabricated ditch body 1. The rubber water-stop pads 4 are used for water-stopping between adjacent prefabricated ditch bodies 1. The pre-reserved grooves 3 extend along the cross-sectional direction of the prefabricated ditch body 1 to ensure the water-stopping effect.

[0026] like Figure 3 As shown, during use, the two prefabricated water ditch bodies 1 that are assembled adjacently are fixedly connected by bolts screwed into the bolt holes 2, while the rubber water-stop pad 4 installed in the reserved groove 3 is pressed tightly.

[0027] When this embodiment is applied, the following steps are included:

[0028] 1) Based on the size requirements of the prefabricated water ditch, the factory customizes steel molds and uses the steel molds to prefabricate the main body of the water ditch 1 in the factory. During the prefabrication, attention should be paid to leaving bolt holes 2 and reserved grooves 3.

[0029] 2) After the prefabricated main body 1 of the drainage ditch is completed, it is transported to the construction site, and a water-stop rubber pad 4 is installed in the reserved groove 3. The prefabricated main body 1 with the water-stop rubber pad 4 installed is placed at the drainage ditch laying position, and bolts are inserted into the corresponding bolt holes 2 of the adjacent prefabricated main bodies 1 and tightened to complete the prefabrication assembly. The wing plate 5 acts as a buttress column, which can enhance the rigidity of the drainage ditch sidewall.

[0030] In the specific implementation of this embodiment: as follows: Figure 1 As shown, the prefabricated ditch body 1 in this embodiment is straight. However, when there is a need for turning, the overall shape of the prefabricated ditch body 1 can be adjusted according to the actual design during prefabrication, but the end face connection position can still maintain the end face design in this embodiment; at the same time, a wedge shape can also be set on the end face to adapt to various curves.

[0031] The water-stop rubber pad 4 is made of water-stopping materials such as EPDM rubber.

[0032] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A prefabricated assembled drainage ditch, comprising a prefabricated drainage ditch body, characterized in that: The prefabricated ditch body has outwardly protruding wing plates on both sides, and connecting holes are provided on the wing plates; the prefabricated ditch body has reserved grooves for installing rubber water-stop pads on both sides.

2. The prefabricated assembled drainage ditch according to claim 1, characterized in that: The two prefabricated ditch bodies assembled adjacent to each other are fixedly connected by connectors screwed into the connection holes, which at the same time compresses the rubber waterstop pad installed in the reserved groove.

3. A prefabricated assembled drainage ditch according to claim 1, characterized in that: The reserved groove extends along the cross-sectional direction of the prefabricated ditch body.

4. A prefabricated assembled drainage ditch according to claim 1, characterized in that: Along the height direction of the wing plate, a plurality of connection holes are evenly spaced apart on the wing plate.

5. A prefabricated assembled drainage ditch according to claim 1, characterized in that: The prefabricated ditch body is either straight or curved, and both types have wing plates, connecting holes, and reserved grooves on their end faces.

6. A prefabricated assembled drainage ditch according to claim 1, characterized in that: The interior of the prefabricated ditch body is provided with a steel mesh corresponding to the position of the connecting hole.