Pipe ditch connecting structure
By setting embedded parts and welding connecting plates on the main body of the precast pipe trench, the problems of slow construction speed and easy breakage in the existing precast pipe trench connection structure are solved, and a high-efficiency and stable connection effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI CONSTR INVESTMENT JINNAN CONSTR IND CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-01
AI Technical Summary
The existing precast pipe trenches are connected to each other by spigot and socket joints and waterproof mortar, which makes it difficult to control the quality of the concrete at the ends during production, slows down the construction speed, requires high foundation bearing capacity, and is prone to cracking due to uneven foundation settlement.
The main body of the adjacent pipe trench is fixed by welding the left and right embedded parts through the connecting plate, eliminating the socket structure and using the embedded bolts to enhance the connection rigidity, simplifying the production process and improving construction efficiency.
It effectively avoids cracking at the joints caused by uneven foundation settlement, improves production quality and construction efficiency, and extends service life.
Smart Images

Figure CN224186882U_ABST
Abstract
Description
A trench connection structure Technical Field
[0001] This utility model belongs to the field of precast pipe trenches, and in particular relates to a pipe trench connection structure. Background Technology
[0002] Precast pipe trenches are underground trench-like structures assembled from factory-prefabricated reinforced concrete components (such as U-shaped segments, cover plates, etc.). They are mainly used for centralized laying and protection of water, electricity, heating, communication and other pipeline facilities, while also facilitating later maintenance.
[0003] Precast pipe trenches are manufactured in factories according to design specifications and then installed on-site. As shown in Figure 5, existing precast pipe trench segments are connected by socket joints and waterproof mortar, ensuring the integrity and waterproofing of the trench. However, this socket connection method makes it difficult to control the quality of the concrete details at the ends of the precast pipe trench during production, resulting in slow trench assembly speed on construction site and requiring high foundation bearing capacity for the trench assembly. Summary of the Invention
[0004] To address the problems existing in the prior art, this utility model provides a trench connection structure. The connection structure of this utility model is simple. By welding the pre-embedded parts at the splicing point, the shape of the trench can be optimized, production quality and construction efficiency can be improved, and the rigid connection can effectively avoid the cracking of the trench connection due to uneven foundation settlement, thereby improving its service life.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a pipe trench connection structure, including a left pipe trench body and a right pipe trench body arranged opposite to each other. Multiple left embedded parts are provided at the cross-section of the left pipe trench body, and multiple right embedded parts are provided at the cross-section of the right pipe trench body. The left embedded parts and the right embedded parts correspond one-to-one, and the left embedded parts and the right embedded parts are fixedly connected by a connecting plate.
[0006] Furthermore, the left and right embedded parts have the same structure, and the left embedded part includes a support plate with multiple embedded bolts welded and fixed on the support plate.
[0007] Furthermore, the number of pre-embedded bolts is five or nine.
[0008] Furthermore, the connecting plate is fixed to the left and right embedded parts by welding.
[0009] Furthermore, the number of the left embedded parts is six, with two provided on each side of the trench body.
[0010] Compared with the prior art, the advantages of this utility model are as follows: This utility model connects and fixes two adjacent trench bodies by pre-embedded parts and connecting plates. Compared with the existing socket structure, the rigid connection effectively avoids the cracking of the trench connection due to uneven foundation settlement, thus improving its service life. Moreover, after adopting the structure of this utility model, the socket structure at the end face of the precast trench can be eliminated, simplifying the preparation process of the precast trench and improving production quality and construction efficiency. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings.
[0012] Figure 1 is a schematic diagram of the structure of this utility model.
[0013] Figure 2 is a schematic diagram of the main structure of the left trench.
[0014] Figure 3 is a schematic diagram of the structure of the left embedded part.
[0015] Figure 4 is a schematic diagram of the welding of the embedded part and the connecting plate.
[0016] Figure 5 is a schematic diagram of the existing socket structure.
[0017] In the diagram, 1 is the main body of the left trench, 2 is the main body of the right trench, 3 is the left embedded part, 4 is the right embedded part, 5 is the connecting plate, 6 is the support plate, and 7 is the embedded bolt. Detailed Implementation
[0018] As shown in Figure 1, a trench connection structure includes a left trench body 1 and a right trench body 2 arranged opposite to each other. The left trench body 1 and the right trench body 2 have the same structure and are U-shaped as a whole. Multiple left embedded parts 3 are provided at the cross-section of the left trench body 1, and multiple right embedded parts 4 are provided at the cross-section of the right trench body 2. The left embedded parts 3 and the right embedded parts 4 correspond one-to-one and are fixed by welding through a connecting plate 5.
[0019] In use, the connection structure of this utility model involves first preparing a foundation pad at the designated installation location of the precast trench. After the foundation pad is completed, the left trench body 1 and the right trench body 2 are hoisted into place using lifting equipment. Since there are no socket joints, the alignment precision is not very high; only the left embedded part 3 and the right embedded part 4 need to be roughly aligned. Then, the left trench body 1 and the right trench body 2 are connected and fixed using the connecting plate 5. Finally, the gap between the left trench body 1 and the right trench body 2 is filled with waterproof mortar. After completing the installation of one precast trench segment, the installation of the next segment is carried out sequentially.
[0020] After the pipe trench is installed, the pipe clamps for the pipeline need to be installed. The original socket-type structure requires expansion bolts to be installed in sequence inside the pipe trench body. However, the connection structure of this utility model, due to the presence of the connecting plate 5, the left embedded part 3 and the right embedded part 4, allows the pipe clamps to be directly welded and fixed on the connecting plate 5 without drilling, resulting in higher installation efficiency.
[0021] The specific structures of the left embedded part 3 and the right embedded part 4 are not described in detail in the above embodiments. In order for those skilled in the art to better understand the structure of this utility model, the specific structure is given in this embodiment based on the above embodiments.
[0022] As shown in Figure 3, the left embedded part 3 and the right embedded part 4 have the same structure, including a support plate 6, on which multiple embedded bolts 7 are welded and fixed. The support plate 6 is used to fix it to the connecting plate 5, while the embedded bolts 7 are used to increase the connection strength of the support plate 6. The number of embedded bolts 7 can be selected according to the size of the support plate 6, and there can be five or nine embedded bolts 7. The embedded bolts 7 are generally evenly distributed on the support plate 6.
[0023] For the left embedded part 3 and the right embedded part 4, the number is generally six, with two set on each face of the trench body. Of course, if the trench body is large, the number can be increased as needed, but at least two embedded parts should be maintained on each face.
[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A trench connection structure, characterized in that: It includes a left trench body (1) and a right trench body (2) arranged opposite to each other. Multiple left embedded parts (3) are provided at the cross-section of the left trench body (1), and multiple right embedded parts (4) are provided at the cross-section of the right trench body (2). The left embedded parts (3) and the right embedded parts (4) correspond one to one. The left embedded parts (3) and the right embedded parts (4) are fixedly connected by a connecting plate (5).
2. The trench connection structure according to claim 1, characterized in that: The left embedded part (3) and the right embedded part (4) have the same structure. The left embedded part (3) includes a support plate (6) and multiple embedded bolts (7) are welded and fixed on the support plate (6).
3. The trench connection structure according to claim 2, characterized in that: The number of the pre-embedded bolts (7) is five or nine.
4. The trench connection structure according to claim 3, characterized in that: The connecting plate (5) is fixed to the left embedded part (3) and the right embedded part (4) by welding.
5. The trench connection structure according to claim 1, characterized in that: The number of the left embedded parts (3) is six, with two on each side of the trench body.