Prefabricated concrete pipe gallery and installation and construction method thereof

Abstract

The invention discloses a prefabricated concrete pipe gallery and an installation and construction method thereof. The front end and the rear end of a pipe gallery body are first socket structures matched with each other; 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 installation and construction are convenient and fast, transverse connection of the pipe gallery is achieved through a socket structure and tensioning and extruding of the prestressed steel bars, an 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 the construction cost is reduced. And the sealing performance of the pipe gallery is better by arranging the water stop rubber strip and the sealing material.

Description

Technical Field

[0001] The present invention relates to the technical field related to construction, and particularly relates to a precast concrete pipe gallery and an installation construction method thereof. Background Art

[0002] A pipe gallery is a corridor for pipelines. It is a municipal public facility built underground in a city for laying municipal public pipelines through unified planning, design, construction and maintenance. It refers to a public tunnel underground in a city for centrally laying municipal pipelines such as electricity, communication, radio and television, water supply, drainage, heat, gas, etc.

[0003] There are mainly two ways for the production and installation of pipe galleries in the prior art: one is the on-site cast-in-place method, which has disadvantages such as long construction period, slow progress, low safety guarantee, large resource consumption and being not environmentally friendly; the other is the method of using precast pipe gallery sections with full cross-section, which overcomes some disadvantages of cast-in-place construction, but has high cost, poor connection sealing performance, and extremely inconvenient transportation and hoisting due to large volume and weight. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned problems and provide a precast concrete pipe gallery and an installation construction method thereof.

[0005] The technical solution adopted by the present invention to achieve the above purpose is as follows: A precast concrete pipe gallery includes a plurality of sequentially connected pipe gallery bodies precast with reinforced concrete. The pipe gallery body is a hollow structure; the front and rear ends of the pipe gallery body are matching socket structures I, and adjacent pipe gallery bodies are connected through the socket structure I. A socket protrusion I is arranged at the rear end of the pipe gallery body, and a socket groove I matching the socket protrusion I is opened at the front end of the pipe gallery body; prestressed steel bar holes penetrate through the four corners of the pipe gallery body along the length direction, connection boxes are opened at the inner wall of the pipe gallery body corresponding to each prestressed steel bar hole, the connection boxes are communicated with the corresponding prestressed steel bar holes, and the connection boxes between adjacent pipe gallery bodies are connected through prestressed steel bars inserted into the prestressed steel bar holes. Both ends of the prestressed steel bars are respectively located in the connection boxes of the corresponding pipe gallery bodies and are both installed with fastening anchors; the pipe gallery body includes an upper pipe gallery and a lower pipe gallery which are stacked up and down; the upper pipe gallery and the lower pipe gallery are connected through a socket structure II. A socket protrusion II is arranged on the upper end surface of the lower pipe gallery, and a socket groove II matching the socket protrusion II is opened on the lower end surface of the upper pipe gallery.

[0006] A water stop groove I is opened in the socket groove I, and a water stop rubber strip I is installed in the water stop groove I; a water stop groove II is opened in the socket groove II, and a water stop rubber strip II is installed in the water stop groove II.

[0007] The socket and spigot structure 1 is filled with sealing material 1 at the inner wall of the pipe gallery body; the socket and spigot structure 1 is filled with sealing material 2 at the inner wall of the pipe gallery body.

[0008] The socket projection 1 and the socket groove 1 are provided with corresponding guiding inclined surfaces 1; the socket projection 2 and the socket groove 2 are provided with corresponding guiding inclined surfaces 2.

[0009] Reinforcing bars are precast at the prestressed steel bar holes in the pipe gallery body.

[0010] An anchoring plate is sleeved on the prestressed steel bar, and the anchoring plate is located between the wall of the connection box and the fastening anchor.

[0011] Hanging nails are precast on both the upper pipe gallery and the lower pipe gallery.

[0012] An installation construction method for a precast concrete pipe gallery includes the following steps: S1. Hoist and place the precast lower pipe gallery to the installation position on the foundation concrete in the foundation pit; S2. Hoist and place the precast upper pipe gallery on the lower pipe gallery. The two are connected through the socket and spigot structure 2, and ensure that the front and rear ends of the upper pipe gallery and the lower pipe gallery are aligned to form a pipe gallery body stacked up and down; S3. Insert prestressed steel bars into the prestressed steel bar holes of the upper pipe gallery and the lower pipe gallery, and ensure that one end of the prestressed steel bar is located inside the connection box; S4. Place the next lower pipe gallery. The front and rear two lower pipe galleries are connected through the socket and spigot structure 1, and the other end of the prestressed steel bar passes through the prestressed steel bar hole of the next lower pipe gallery to the connection box of the next lower pipe gallery. Install anchors at both ends of the prestressed steel bar, and make the front and rear two lower pipe galleries fit tightly by tightening the anchors; S5. Place the next upper pipe gallery. The front and rear two upper pipe galleries are connected through the socket and spigot structure 1, and the other end of the prestressed steel bar passes through the prestressed steel bar hole of the next upper pipe gallery to the connection box of the next upper pipe gallery. Install anchors at both ends of the prestressed steel bar, and make the front and rear two upper pipe galleries fit tightly by tightening the anchors; S6. Repeat steps S4 and S5 until all the upper pipe galleries and lower pipe galleries are installed.

[0013] Before the upper pipe gallery and the lower pipe gallery are connected, a water stop rubber strip 2 is first placed at the socket and spigot structure 2 between them, and a water stop rubber strip 1 is placed at the socket and spigot structure 1 of the already placed pipe gallery body, and then the next lower pipe gallery is placed.

[0014] After S6 is completed, fill sealing material 1 at the inner wall of the pipe gallery body where the socket and spigot structure 1 is located, and fill sealing material 2 at the inner wall of the pipe gallery body where the socket and spigot structure 2 is located.

[0015] The features of the present invention are as follows: the installation and construction are convenient. The lateral connection of the pipe gallery is realized through the socket and spigot structure and the tension and extrusion of prestressed steel bars. The upper and lower split structures are adopted to reduce the volume and weight of a single unit, occupy less space, facilitate transportation, hoisting and worker operation. Moreover, the connection can be strengthened by the self-weight of the upper pipe gallery, and longitudinal connecting steel bars are not required. The sealing performance of the pipe gallery is better by setting water-stop rubber strips and sealants. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the structural schematic diagram of the present invention Figure I .

[0017] Figure 2 is the structural schematic diagram of the present invention Figure II .

[0018] Figure 3 is the schematic diagram of the first socket and spigot structure of the present invention.

[0019] Figure 4 is the schematic diagram of the second socket and spigot structure of the present invention.

[0020] Figure 5 is the schematic diagram at the connection box of the present invention.

[0021] Figure 6 is the schematic diagram at the prestressed steel bar of the present invention.

[0022] Wherein: 1. Pipe gallery body, 11. Upper pipe gallery, 12. Lower pipe gallery, 2. First socket and spigot structure, 21. First socket projection, 22. First socket groove, 23. First water-stop groove, 24. First water-stop rubber strip, 25. First sealant, 26. Second guiding inclined surface, 3. Prestressed steel bar hole, 4. Reinforcing rib, 5. Prestressed steel bar, 6. Fastening anchor, 61. Anchor plate, 7. Connection box, 8. Hanging nail, 9. Second socket and spigot structure, 91. Second socket projection, 92. Second socket groove, 93. Second water-stop groove, 94. Second water-stop rubber strip, 95. Second sealant, 96. Second guiding inclined surface. DETAILED DESCRIPTION OF THE INVENTION

[0023] Such as Figures 1-6As shown in the figure, the present invention is a precast concrete pipe gallery, which includes several pipe gallery bodies 1 precast with reinforced concrete connected in sequence. The pipe gallery body 1 is a hollow square structure. The front and rear ends of the pipe gallery body 1 are mating socket structures 2. Adjacent pipe gallery bodies 1 are connected through the socket structure 2. A socket projection 21 is provided at the rear end of the pipe gallery body 1, and a socket groove 22 matching the socket projection 21 is provided at the front end of the pipe gallery body 1. The socket projection 21 and the socket groove 22 are provided with corresponding guiding inclined surfaces 26 for guiding connection. A water stop groove 23 is provided in the socket groove 22, and a water stop rubber strip 24 is installed in the water stop groove 23. The socket structure 2 is filled with a sealing material 25 at the inner wall of the pipe gallery body 1. The sealing material 25 adopts a polysulfide rubber caulking sealing material, and the water stop rubber strip 24 and the sealing material 25 are used to strengthen the sealing and waterproofing. Prestressed steel bar holes 3 penetrate along the length direction at the four corners of the pipe gallery body 1. A connection box 7 is provided at the inner wall of the pipe gallery body 1 corresponding to each prestressed steel bar hole 3. The connection box 7 is communicated with the corresponding prestressed steel bar hole 3. Reinforcing ribs 4 are precast at the positions of the prestressed steel bar holes 3 and the connection boxes 7 in the pipe gallery body 1 to strengthen the tension strength here. The connection boxes 7 of adjacent pipe gallery bodies 1 are connected through prestressed steel bars 5 inserted into the prestressed steel bar holes 3. Both ends of the prestressed steel bar 5 are located in the connection boxes 7 of the corresponding pipe gallery bodies 1 and are both provided with fastening anchors 6. An anchor plate 61 is sleeved on the prestressed steel bar 5. The anchor plate 61 is located between the wall of the connection box 7 and the fastening anchor 6. When the fastening anchor 6 tightens the prestressed steel bar 5, the tightening force directly acts on the anchor plate 61 to reduce the damage to the pipe gallery body 1. The pipe gallery body 1 adopts an upper and lower split structure, including an upper pipe gallery 11 and a lower pipe gallery 12 stacked up and down. The upper pipe gallery 11 and the lower pipe gallery 12 are both precast with lifting nails 8 for easy hoisting. The upper pipe gallery 11 and the lower pipe gallery 12 are connected through a socket structure 9. A socket projection 91 is provided on the upper end surface of the lower pipe gallery 12, and a socket groove 92 matching the socket projection 91 is provided on the lower end surface of the upper pipe gallery 12. The socket projection 91 and the socket groove 92 are provided with corresponding guiding inclined surfaces 96 for guiding connection. A water stop groove 93 is provided in the socket groove 92, and a water stop rubber strip 94 is installed in the water stop groove 93. The socket structure 9 is filled with a sealing material 95 at the inner wall of the pipe gallery body 1. The sealing material 95 adopts a polysulfide rubber caulking sealing material, and the water stop rubber strip 94 and the sealing material 95 are used to strengthen the sealing and waterproofing.

[0024] The present invention is an installation construction method for a precast concrete pipe gallery, which includes the following steps: S1. Hoist and place the precast lower pipe gallery 12 to the installation position on the foundation concrete in the foundation pit; S2. Place the second waterstop rubber strip 94 at the socket and spigot structure two 9 of the upper pipe gallery 11 and the lower pipe gallery 12, lift and place the prefabricated upper pipe gallery 11 onto the lower pipe gallery 12. The two are connected through the socket and spigot structure two 9, and ensure that the front and rear ends of the upper pipe gallery 11 and the lower pipe gallery 12 are aligned to form the pipe gallery body 1 stacked up and down. S3. Insert the prestressed steel bars 5 into the prestressed steel bar holes 3 of the upper pipe gallery 11 and the lower pipe gallery 12, and ensure that one end of the prestressed steel bar 5 is located inside the connection box 7. S4. Place the first waterstop rubber strip 24 at the socket and spigot structure one 2 of the already placed pipe gallery body 1, and then place the next lower pipe gallery 12. The front and rear two lower pipe galleries 12 are connected through the socket and spigot structure one 2, and the other end of the prestressed steel bar 5 passes through the prestressed steel bar hole 3 of the next lower pipe gallery 12 to the connection box 7 of the next lower pipe gallery 12. Install the anchor fittings 6 at both ends of the prestressed steel bar 5, and make the front and rear two lower pipe galleries 12 fit tightly by tightening the anchor fittings 6. S5. Place the next upper pipe gallery 11. The front and rear two upper pipe galleries 11 are connected through the socket and spigot structure one 2, and the other end of the prestressed steel bar 5 passes through the prestressed steel bar hole 3 of the next upper pipe gallery 11 to the connection box 7 of the next upper pipe gallery 11. Install the anchor fittings 6 at both ends of the prestressed steel bar 5, and make the front and rear two upper pipe galleries 11 fit tightly by tightening the anchor fittings 6 to realize the connection of the front and rear two pipe gallery bodies. S6. Repeat steps S4 and S5 until all the upper pipe galleries 11 and the lower pipe galleries 12 are installed. Then fill the sealant one 25 at the socket and spigot structure one 2 located on the inner wall of the pipe gallery body 1, and fill the sealant two 95 at the socket and spigot structure two 9 located on the inner wall of the pipe gallery body 1.

[0025] The installation and construction of the present invention are convenient. The lateral connection of the pipe gallery is realized by the socket and spigot structure one 2 and the tension and extrusion of the prestressed steel bars 5. The upper and lower split structures are adopted to reduce the volume and weight of a single unit, occupy less space, and are convenient for transportation, hoisting and workers' operation. Moreover, the connection can be strengthened by the self-weight of the upper pipe gallery 11, and no longitudinal connection steel bars are required. The waterstop rubber strips and sealants are arranged to make the pipe gallery have better sealing and waterproof performance.

[0026] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A precast concrete pipe gallery, comprising a plurality of reinforced concrete precast pipe gallery bodies connected in sequence, wherein the pipe gallery bodies are hollow structures; characterized in that: The front and rear ends of the pipe gallery body are matched with a socket structure 1, and adjacent pipe gallery bodies are connected by the socket structure 1. The rear end of the pipe gallery body is provided with a socket protrusion 1, and the front end of the pipe gallery body is provided with a socket groove 1 matching the socket protrusion 1; prestressed steel bar holes are penetrated through the four corners of the pipe gallery body along the length direction, and a connection box is provided at the inner wall of the pipe gallery body corresponding to each prestressed steel bar hole, and the connection box is connected with the corresponding prestressed steel bar hole. The connection boxes of adjacent pipe gallery bodies are connected by prestressed steel bars inserted in the prestressed steel bar holes, and the two ends of the prestressed steel bars are respectively located in the connection boxes of the corresponding pipe gallery bodies and are both installed with fastening anchors; the pipe gallery body includes an upper pipe gallery and a lower pipe gallery stacked up and down; the upper pipe gallery and the lower pipe gallery are connected by a socket structure 2, the upper end face of the lower pipe gallery is provided with a socket protrusion 2, and the lower end face of the upper pipe gallery is provided with a socket groove 2 matching the socket protrusion 2.

2. A precast concrete pipe gallery as claimed in claim 1, characterized in that: The socket groove 1 is provided with a water stop groove 1, in which a water stop rubber strip 1 is installed; the socket groove 2 is provided with a water stop groove 2, in which a water stop rubber strip 2 is installed.

3. A precast concrete pipe gallery as claimed in claim 1, characterized in that: The socket structure 1 is located at the inner wall of the pipe gallery body and is filled with sealing material 1; the socket structure 1 is located at the inner wall of the pipe gallery body and is filled with sealing material 2.

4. A precast concrete pipe gallery as claimed in claim 1, characterized in that: The socket protrusion 1 and the socket groove 1 are provided with a corresponding guiding inclined surface 1; the socket protrusion 2 and the socket groove 2 are provided with a corresponding guiding inclined surface 2.

5. The precast concrete pipe gallery according to claim 1, characterized in that: Reinforcing ribs are prefabricated at the prestressed steel bar holes in the pipe gallery body.

6. The precast concrete pipe gallery according to claim 1, characterized in that: An anchor plate is mounted on the prestressed steel bar, and the anchor plate is located between the connection box wall and the fastening anchor.

7. The precast concrete pipe gallery according to claim 1, characterized in that: The upper pipe gallery and the lower pipe gallery are both prefabricated with hanging nails.

8. The installation construction method of a precast concrete pipe gallery according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Hang the prefabricated lower pipe gallery to the installation position on the foundation concrete of the foundation pit; S2, hoisting the prefabricated upper pipe gallery onto the lower pipe gallery, connecting the two through the socket structure 2, and ensuring that the front and rear ends of the upper pipe gallery and the lower pipe gallery are aligned to form a pipe gallery body stacked up and down; S3. Insert prestressed steel bars into the prestressed steel bar holes of the upper pipe gallery and the lower pipe gallery to ensure that one end of the prestressed steel bar is located in the connection box; S4, place the next section of the lower pipe gallery, connect the front and rear sections of the lower pipe gallery through a socket structure, and pass the other end of the prestressed steel bar through the prestressed steel bar hole of the next section of the lower pipe gallery to the connection box of the next section of the lower pipe gallery, install anchors at both ends of the prestressed steel bar, and tighten the anchors to make the front and rear sections of the lower pipe gallery fit tightly; S5. Place the next section of the upper pipe gallery. The front and rear sections of the upper pipe gallery are connected by a socket structure. The other end of the prestressed steel bar passes through the prestressed steel bar hole of the next section of the upper pipe gallery to the connection box of the next section of the upper pipe gallery. Anchors are installed at both ends of the prestressed steel bar. The front and rear sections of the upper pipe gallery are tightly fitted by tightening the anchors. S6. Repeat steps S4 and S5 until all upper and lower pipe galleries are installed.

9. The installation construction method of a precast concrete pipe gallery according to claim 8, characterized in that: Before the upper pipe gallery and the lower pipe gallery are connected, a second water stop rubber strip is placed at a second socket structure between the two, and a first water stop rubber strip is placed at a first socket structure of the already placed pipe gallery body, and then the next section of the lower pipe gallery is placed.

10. The installation construction method of a precast concrete pipe gallery according to claim 8, characterized in that: After S6 is completed, the first sealing material is filled in the inner wall of the pipe gallery body at the first socket structure, and the second sealing material is filled in the inner wall of the pipe gallery body at the second socket structure.

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