Prefabricated concrete pipe gallery

Abstract

The utility model discloses a prefabricated concrete pipe gallery. The prefabricated concrete pipe gallery comprises a pipe gallery body. The front end and the rear end of the pipe gallery body are matched first socket structures; prestressed steel bar holes penetrate through the pipe gallery bodies, connecting boxes are arranged on the inner walls of the pipe gallery bodies, the connecting boxes of the adjacent pipe gallery bodies are connected through prestressed steel bars inserted in the prestressed steel bar holes, and the two ends of each prestressed steel bar are located in the corresponding connecting boxes of the pipe gallery bodies respectively and provided with fastening anchorage devices. The pipe gallery body comprises an upper pipe gallery and a lower pipe gallery; the upper pipe gallery and the lower pipe gallery are connected through a second socket structure. The pipe gallery has the advantages that transverse connection of the pipe gallery is achieved through the socket structures and tensioning and extruding of the prestressed steel bars, the up-down split structure is adopted, the size and weight of a single body are reduced, occupied space is small, transportation, hoisting and worker operation are facilitated, connection can be reinforced through the dead weight of the upper pipe gallery, longitudinal connecting steel bars are not needed, and cost is reduced. By arranging the water stop rubber strip and the sealing material, the sealing and waterproof performance of the pipe gallery is better.

Description

Technical Field

[0001] This utility model relates to the technical field of building construction, specifically to a precast concrete pipe gallery. Background Technology

[0002] A utility tunnel, also known as a pipeline corridor, is a municipal public facility built underground in a city for laying municipal utility pipelines, with unified planning, design, construction, and maintenance. It refers to a public tunnel underground in a city used for the centralized laying of municipal pipelines such as electricity, communications, radio and television broadcasting, water supply, drainage, heating, and gas.

[0003] There are two main types of pipe gallery production and installation technologies: one is to use on-site casting, which has disadvantages such as long construction period, slow progress, low safety guarantee, high resource consumption, and environmental protection disadvantages; the other is to use full-section prefabricated pipe gallery sections, which overcomes some disadvantages of on-site casting construction, but has high cost, poor connection sealing, and is extremely inconvenient for transportation and hoisting due to its large size and weight. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a precast concrete pipe gallery.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0006] A precast concrete pipe gallery includes several precast reinforced concrete pipe gallery bodies connected in sequence, each pipe gallery body having a hollow structure. The front and rear ends of each pipe gallery body are fitted with matching socket structures, and adjacent pipe gallery bodies are connected via these socket structures. A socket protrusion is provided at the rear end of each pipe gallery body, and a socket groove matching the socket protrusion is provided at the front end. Prestressed steel reinforcement holes are drilled through each of the four corners of each pipe gallery body along its length, and a corresponding prestressed steel reinforcement hole is formed on the inner wall of the pipe gallery body. The system includes a connecting box that communicates with the corresponding prestressed steel bar hole. The connecting boxes of adjacent pipe rack bodies are connected by prestressed steel bars inserted into the prestressed steel bar hole. The two ends of the prestressed steel bars are located in the corresponding connecting boxes of the pipe rack bodies and are each equipped with a fastening anchor. The pipe rack body includes an upper pipe rack and a lower pipe rack stacked on top of each other. The upper pipe rack and the lower pipe rack are connected by a second socket structure. The upper end face of the lower pipe rack is provided with a second socket protrusion, and the lower end face of the upper pipe rack is provided with a second socket groove that matches the second socket protrusion.

[0007] The first socket groove is provided with a water-stop groove, and a water-stop rubber strip is installed in the first water-stop groove; the second socket groove is provided with a water-stop groove, and a water-stop rubber strip is installed in the second water-stop groove.

[0008] The socket structure one is filled with sealant one at the inner wall of the pipe gallery body; the socket structure one is filled with sealant two at the inner wall of the pipe gallery body.

[0009] The first socket protrusion and the first socket groove are provided with corresponding guide slopes; the second socket protrusion and the second socket groove are provided with corresponding guide slopes.

[0010] The pipe gallery body has precast reinforcing bars located at the holes of the prestressed steel bars.

[0011] An anchor plate is fitted onto the prestressed steel bar, and the anchor plate is located between the wall of the connecting box and the fastening anchor.

[0012] Both the upper and lower pipe racks are prefabricated with hanging nails.

[0013] The features of this utility model are: the transverse connection of the pipe gallery is achieved by the socket structure and the tensioning and extrusion of prestressed steel bars, and the upper and lower split structure is adopted to reduce the volume and weight of the individual units, occupy less space, and facilitate transportation, lifting and worker operation. Moreover, the connection can be strengthened by the self-weight of the upper pipe gallery, without the need for longitudinal connecting steel bars. The installation of water-stop strips and sealant makes the pipe gallery more sealed and waterproof. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0016] Figure 3 This is a schematic diagram of the socket structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the second socket structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the connecting box of this utility model.

[0019] Figure 6 This is a schematic diagram of the prestressed steel reinforcement section of this utility model.

[0020] Among them: 1. Pipe gallery body 11. Upper pipe gallery 12. Lower pipe gallery 2. Socket structure one 21. Socket protrusion one 22. Socket groove one 23. Water stop groove one 24. Water stop strip one 25. Sealing material one 26. Guide slope two 3. Prestressed steel bar hole 4. Reinforcing bar 5. Prestressed steel bar 6. Fastening anchor 61. Anchor plate 7. Connecting box 8. Hanging nail 9. Socket structure two 91. Socket protrusion two 92. Socket groove two 93. Water stop groove two 94. Water stop strip two 95. Sealing material two 96. Guide slope two. Detailed Implementation

[0021] like Figure 1-6As shown, this utility model is a precast concrete pipe gallery, comprising several precast reinforced concrete pipe gallery bodies 1 connected in sequence. Each pipe gallery body 1 has a hollow square structure. The front and rear ends of each pipe gallery body 1 are matched with socket structures 2. Adjacent pipe gallery bodies 1 are connected via socket structures 2. The rear end of each pipe gallery body 1 is provided with a socket protrusion 21, and the front end of each pipe gallery body 1 is provided with a socket groove 22 matching the socket protrusion 21. The socket protrusion 21 and socket groove 22 are provided with corresponding guide slopes 26 to facilitate guiding connection. The socket groove 22 is provided with a water-stop groove 23. The pipe gallery body 1 is equipped with a water-stop strip 24. The socket structure 2 is filled with sealant 25 at its inner wall. The sealant 25 is a polysulfide rubber caulking sealant. The water-stop strip 24 and sealant 25 enhance the sealing and waterproofing. Prestressed steel bar holes 3 penetrate each of the four corners of the pipe gallery body 1 along its length. A connecting box 7 is provided at each prestressed steel bar hole 3 on the inner wall of the pipe gallery body 1. The connecting box 7 communicates with the corresponding prestressed steel bar hole 3. Reinforcing ribs 4 are prefabricated inside the pipe gallery body 1 at the prestressed steel bar holes 3 and connecting boxes 7 to enhance the tensile strength at these locations. The connecting boxes 7 of adjacent pipe gallery bodies 1... The pipe racks are connected by prestressed steel bars 5 inserted into the holes 3 of the prestressed steel bars. Both ends of the prestressed steel bars 5 are located in the corresponding connecting boxes 7 of the pipe rack body 1 and are equipped with fastening anchors 6. Anchor plates 61 are fitted onto the prestressed steel bars 5, located between the wall of the connecting box 7 and the fastening anchors 6. When the fastening anchors 6 tighten the prestressed steel bars 5, the tension force acts directly on the anchor plates 61, reducing damage to the pipe rack body 1. The pipe rack body 1 adopts a split structure, including an upper pipe rack 11 and a lower pipe rack 12 stacked vertically. Both the upper and lower pipe racks 11 and 12 are prefabricated with lifting nails 8 for easy hoisting. The pipe racks 12 are connected by a socket structure 2 9. The upper end face of the lower pipe rack 12 is provided with a socket protrusion 2 91, and the lower end face of the upper pipe rack 12 is provided with a socket groove 2 92 that matches the socket protrusion 2 91. The socket protrusion 2 91 and the socket groove 2 92 are provided with corresponding guide slopes 2 96 to facilitate guiding connection. The socket groove 2 92 is provided with a water-stop groove 2 93, and a water-stop rubber strip 2 94 is installed in the water-stop groove 2 93. The socket structure 2 9 is filled with a sealant 2 95 at the inner wall of the pipe rack body 1. The sealant 2 95 is a polysulfide rubber caulking sealant. The water-stop rubber strip 2 94 and the sealant 2 95 enhance the sealing and waterproofing.

[0022] During installation, the prefabricated lower pipe gallery 12 is first hoisted onto the foundation concrete of the pit. Water-stop strips 94 are placed at the socket structure 9 of the upper pipe gallery 11 and lower pipe gallery 12. The prefabricated upper pipe gallery 11 is then hoisted onto the lower pipe gallery 12, connected via the socket structure 9, ensuring alignment of the front and rear ends of the upper and lower pipe galleries 11 and 12 to form a stacked pipe gallery body 1. Prestressed steel bars 5 are inserted into the prestressed steel bar holes 3 of the upper and lower pipe galleries 11 and 12, ensuring one end of the prestressed steel bar 5 is located within the connecting box 7. Water-stop strips 24 are placed at the socket structure 2 of the already placed pipe gallery body 1. Then, the next section of the lower pipe gallery 12 is placed, with the two sections connected via the socket structure 2, and the other end of the prestressed steel bar 5 passing through the socket of the next section of the lower pipe gallery 12. From the prestressed steel bar hole 3 to the connecting box 7 of the next lower pipe gallery 12, install anchors 6 at both ends of the prestressed steel bar 5, and tighten the anchors 6 to make the two lower pipe gallery sections 12 fit tightly together; place the next upper pipe gallery 11, and connect the two upper pipe gallery sections 11 through the socket structure 1 2, and pass the other end of the prestressed steel bar 5 through the prestressed steel bar hole 3 of the next upper pipe gallery section 11 to the connecting box 7 of the next upper pipe gallery section 11. Install anchors 6 at both ends of the prestressed steel bar 5, and tighten the anchors 6 to make the two upper pipe gallery sections 11 fit tightly together, thus realizing the connection of the two pipe gallery sections; repeat steps S4 and S5 until all upper pipe galleries 11 and lower pipe galleries 12 are installed, and then fill the socket structure 1 2 with sealant 25 at the inner wall of the pipe gallery body 1, and fill the socket structure 2 9 with sealant 95 at the inner wall of the pipe gallery body 1.

[0023] This utility model is easy to install and construct. The horizontal connection of the pipe gallery is achieved by the socket structure 2 and the prestressed steel bars 5. The upper and lower split structure reduces the volume and weight of the individual units, occupies little space, and is convenient for transportation, lifting and workers' operation. Moreover, the connection can be strengthened by the self-weight of the upper pipe gallery 11, without the need for longitudinal connecting steel bars. The installation of water-stop strips and sealant makes the pipe gallery more sealed and waterproof.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A prefabricated concrete pipe gallery, comprising a plurality of reinforced concrete prefabricated pipe gallery bodies connected in sequence, the pipe gallery body being a hollow structure; characterized in that: The front and rear ends of the utility tunnel body are matched with a socket structure I. Adjacent utility tunnel bodies are connected through the socket structure I. The rear end of the utility tunnel body is provided with a socket protrusion I, and the front end of the utility tunnel body is provided with a socket groove I that matches the socket protrusion I. Each of the four corners of the utility tunnel body has a prestressed steel bar hole along its length. A connection box is provided on the inner wall of the utility tunnel body corresponding to each prestressed steel bar hole. The connection box is connected to the corresponding prestressed steel bar hole. The connection boxes of adjacent utility tunnel bodies are connected by prestressed steel bars inserted into the prestressed steel bar holes. The two ends of the prestressed steel bars are located in the connection boxes of the corresponding utility tunnel bodies and are each equipped with fastening anchors. The utility tunnel body includes an upper utility tunnel and a lower utility tunnel stacked on top of each other. The upper utility tunnel and the lower utility tunnel are connected through a socket structure II. The upper end face of the lower utility tunnel is provided with a socket protrusion II, and the lower end face of the upper utility tunnel is provided with a socket groove II that matches the socket protrusion II.

2. A precast concrete pipe gallery as claimed in claim 1 wherein: The first socket groove is provided with a water-stop groove, and a water-stop rubber strip is installed in the first water-stop groove; the second socket groove is provided with a water-stop groove, and a water-stop rubber strip is installed in the second water-stop groove.

3. A precast concrete pipe gallery as defined in claim 1, wherein: The socket structure one is filled with sealant one at the inner wall of the pipe gallery body; the socket structure one is filled with sealant two at the inner wall of the pipe gallery body.

4. A precast concrete pipe gallery as defined in claim 1 wherein: The first socket protrusion and the first socket groove are provided with corresponding guide slopes; the second socket protrusion and the second socket groove are provided with corresponding guide slopes.

5. A precast concrete utility tunnel in accordance with claim 1, wherein: The pipe gallery body has precast reinforcing bars located at the holes of the prestressed steel bars.

6. A precast concrete utility tunnel in accordance with claim 1, wherein: An anchor plate is fitted onto the prestressed steel bar, and the anchor plate is located between the wall of the connecting box and the fastening anchor.

7. A precast concrete utility tunnel in accordance with claim 1, wherein: Both the upper and lower pipe racks are prefabricated with hanging nails.

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