Setting method for quickly finding vibration fracture point of underground concrete pipeline of water plant

Abstract

The invention discloses a setting method for quickly finding a vibration breaking point of an underground concrete pipeline of a water plant. The setting method comprises the following steps that a pouring interval is reserved between butt joint ends of two sections of prefabricated reinforced concrete pipelines; an inner mold used for forming the inner wall of the cast-in-place concrete pipe section and connecting the two reinforced concrete pipe sections is installed at the pouring interval; a block type outer mold is installed on the periphery of the inner mold, the shape of an inner cavity formed after the outer mold is closed is consistent with the outer contour of a cast-in-place concrete pipe section to be poured, and an annular protruding strip is fixed to the position, corresponding to the axial middle of the cast-in-place concrete pipe section, of the outer mold and used for forming an annular broken guide groove; concrete is poured into a cavity between the inner mold and the outer mold through a pouring hole formed in the outer mold; and after the concrete is cured to reach the strength, the outer mold is dismantled, and the cast-in-place concrete pipe section with the annular broken guide groove is formed. The device has the advantages that the fracture position can be guided when the device is vibrated, leakage points are convenient to find during overhauling, and secondary pouring of a cast-in-place concrete pipe section is convenient.

Description

Technical Field

[0001] This invention relates to the technical field of underground pipe joints, and in particular to a method for quickly locating vibration fracture points in underground concrete pipes of water plants. Background Technology

[0002] During the construction of water plants and other facilities, underground concrete pipes are required for drainage. Initially, these underground concrete pipes consisted of a precast large-diameter section of one underground concrete pipe, through which a section of another reinforced concrete pipe (without a large-diameter section) was threaded. Concrete was then applied to the surface to create the connection. However, this method was prone to leakage at the joint. To address this, the two reinforced concrete pipes were spaced apart, and concrete was poured in place at the gap to form a cast-in-place pipe section for connection, improving reliability. However, during earthquakes or other vibrations, pipe fractures can occur randomly, making it difficult to locate the break point, especially when the pipe is deeply buried, as leaks may not seep to the surface, requiring the entire pipe to be excavated for inspection. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a method for quickly locating vibration fracture points in underground concrete pipelines of water plants. This method solves the problem of inconvenience in locating fracture points in existing underground pipelines by installing a cast-in-place concrete pipe section with an annular fracture guide groove between the joint ends of two precast reinforced concrete pipe sections.

[0004] The objective of this invention is achieved through the following technical solutions: A method for quickly locating vibration fracture points in underground concrete pipelines of water plants, the method comprising the following steps: S1: A pouring interval is reserved between the joint ends of two precast reinforced concrete pipes. S2: At the pouring interval, install an inner mold for forming the inner wall of the cast-in-place concrete pipe section and connecting the two sections of the reinforced concrete pipe. S3: Install a segmented outer mold around the inner mold. The inner cavity shape of the outer mold after it is closed is consistent with the outer contour of the cast-in-place concrete pipe section to be poured. A ring-shaped protrusion is fixed on the outer mold at the position corresponding to the axial middle of the cast-in-place concrete pipe section to form a ring-shaped breakage guide groove. S4: Concrete is poured into the cavity between the inner mold and the outer mold through the pouring hole set on the outer mold, and then vibrated to compact it; after the concrete has cured to the required strength, the outer mold is removed to form the cast-in-place concrete pipe section with the annular fracture guide groove.

[0005] In step S1, the specific method for reserving the pouring interval is as follows: A flange is fixed at the joint end of the two sections of the reinforced concrete pipe, and at least one steel ring is stacked on the flange by a sealing ring to form the casting interval.

[0006] When stacking the steel rings, the sealing ring grooves on the end faces of adjacent steel rings are aligned and the sealing rings are fitted in.

[0007] After stacking the steel rings, the flange and each of the steel rings are axially locked using a locking rod. The locking rod has a pressing block and a threaded section at each end. The threaded section of the locking rod passes through the screw hole of the flange and the locking threaded hole of each of the steel rings in sequence and is threaded into the locking threaded hole of the steel ring furthest from the flange.

[0008] In step S4, the poured concrete simultaneously seeps into the sealing ring groove of the steel ring end face furthest from the flange, forming a concrete convex ring.

[0009] In step S2, the specific method for installing the inner mold is as follows: A connecting convex ring and an inner mold connecting threaded hole are provided on the end face of the two sections of the reinforced concrete pipe; the two ends of the flexible sealing sleeve are respectively fitted onto the connecting convex ring; the pressing ring and the end of the flexible sealing sleeve are pressed and fixed on the end face of the reinforced concrete pipe using the inner mold fixing bolt.

[0010] After step S4 is completed, several rubber tires are fitted onto the joint ends of the two sections of the reinforced concrete pipe and the outside of the already formed cast-in-place concrete pipe section.

[0011] The advantages of this invention are: it can guide the fracture location when subjected to vibration, making it convenient to inspect and find leaks, and to facilitate the secondary pouring of cast-in-place concrete pipe sections. Attached Figure Description

[0012] Figure 1 This invention provides a flowchart of the steps for setting up a method to quickly locate vibration fracture points in underground concrete pipelines of water plants. Figure 2 This is an axial sectional view of the cast-in-place concrete pipe section of the present invention; Figure 3 for Figure 2 Enlarged diagram of A in the middle; like Figures 1-3 As shown in the figure, the markings represent: 1. Reinforced concrete pipe; 2. Cast-in-place concrete pipe section; 3. Annular fracture guide groove; 4. Inner mold; 5. Flexible sealing sleeve; 6. Connecting convex ring; 7. Inner mold connecting threaded hole; 8. Pressing ring; 9. Rubber wheel tire; 10. Inner mold fixing bolt; 11. Flange; 12. Reinforcing bar; 13. Steel ring; 14. Sealing ring; 15. Concrete convex ring; 16. Screw hole; 17. Locking threaded hole; 18. Pressing block; 19. Locking rod; 20. Sealing ring groove; 21. Threaded section. Detailed Implementation

[0013] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art: Example: Figure 1 As shown, this embodiment relates to a method for quickly locating vibration fracture points in underground concrete pipelines of water plants. This method mainly includes the following steps: S1: As Figure 2 As shown, a pouring interval is reserved between the joint ends of the two precast reinforced concrete pipes 1.

[0014] In this embodiment, as Figures 2-3 As shown, the specific method for reserving the pouring interval is as follows: A flange 11 is fixed at the joint end of the two reinforced concrete pipe sections 1. The flange 11 is welded to the reinforcing bars 12 inside the reinforced concrete pipe 1. At least one steel ring 13 is stacked on the flange 11 by sealing ring 14 to form a casting interval. When stacking the steel rings 13, the sealing ring grooves 20 on the end faces of adjacent steel rings 13 are aligned and the sealing rings 14 are inserted. After stacking the steel rings 13, the flange 11 and each steel ring 13 are axially locked using the locking rod 19. The locking rod 19 has a pressing block 18 and a threaded section 21 at both ends. The diameter of the threaded section 21 is larger than the diameter of the locking rod 19. The threaded section 21 of the locking rod 19 passes through the screw hole 16 of the flange 11 and the locking threaded hole 17 of each steel ring 13 in sequence and is threaded into the locking threaded hole 17 of the steel ring 13 farthest from the flange 11. The flange 11 has a number of screw holes 16 along its circumference, and the steel ring 13 has a number of locking threaded holes 17 along its circumference. The number and position of the screw holes 16 correspond to the number and position of the locking threaded holes 17. The screw holes 16 and the locking threaded holes 17 are respectively matched with the threaded section 21. The pressing block 18 provides the pressing force application surface and facilitates the disassembly and assembly of the locking rod 19. The locking rod 19 is made of steel. When vibration causes radial movement between the steel rings 13, the locking rod 19 can reliably limit the displacement amplitude.

[0015] S2: As Figure 2 As shown, at the pouring interval, an inner mold 4 is installed to form the inner wall of the cast-in-place concrete pipe section 2 and to connect the two reinforced concrete pipe sections 1.

[0016] In this embodiment, as Figures 2-3 As shown, the specific method for installing the inner mold 4 is as follows: Connecting convex rings 6 and inner mold connecting threaded holes 7 are provided on the end faces of the two reinforced concrete pipe sections 1 (i.e., on the steel ring 13 farthest from the flange 11). Multiple inner mold connecting threaded holes 7 are arranged circumferentially along the steel ring 13 farthest from the flange 11. The two ends of the flexible sealing sleeve 5 (the main body of the inner mold 4) are respectively fitted onto the two connecting convex rings 6. Both ends of the flexible sealing sleeve 5 have inner mold outward flanges. The pressing ring 8 and the ends (inner mold outward flanges) of the flexible sealing sleeve 5 are pressed and fixed to the end face of the reinforced concrete pipe 1 (i.e., on the steel ring 13 farthest from the flange 11) using inner mold fixing bolts 10. The inner mold outward flange and the pressing ring 8 are respectively provided with several through holes along their circumference. The inner mold fixing bolts 10 pass through the through holes of the pressing ring 8 and the inner mold outward flange in sequence and cooperate with the inner mold connecting threaded holes 7 on the steel ring 13 farthest from the flange 11. The inner mold 4 has a small external volume, can withstand deformation caused by vibration, and has a good shock resistance.

[0017] S3: As Figure 2 As shown, a segmented outer mold (not shown) is installed around the inner mold 4. The inner cavity shape after the outer mold is closed is consistent with the outer contour of the cast-in-place concrete pipe section 2 to be poured. An annular protrusion is fixed at the position of the outer mold corresponding to the axial middle of the cast-in-place concrete pipe section 2 to form the annular breakage guide groove 3.

[0018] In this embodiment, the outer mold is an assemblable steel or wooden template, and the annular protrusion is a rubber strip, metal strip, or plastic strip fixed to the inner wall of the template.

[0019] S4: As Figure 2 As shown, concrete is poured into the cavity between the inner mold 4 and the outer mold through the pouring hole set on the outer mold, and then vibrated to compact it; after the concrete has cured to the required strength, the outer mold is removed to form a cast-in-place concrete pipe section 2 with an annular fracture guide groove 3.

[0020] In this embodiment, as Figure 2As shown, the cast-in-place concrete pipe section 2, flange 11, and steel ring 13 form a joint structure. The length of the cast-in-place concrete pipe section 2 is more than 20cm. During pouring, the poured concrete simultaneously seeps into the sealing ring groove 20 on the end face of the steel ring 13 furthest from the flange 11, forming a concrete convex ring 15. A tenon and mortise structure is formed between the sealing ring groove 20 on the end face of the steel ring 13 furthest from the flange 11 and the concrete convex ring 15, which can resist pull-out and shear forces, strengthening the connection between the cast-in-place concrete pipe section 2 and the steel ring 13. After the cast-in-place concrete pipe section 2 is formed, several rubber tires 9 are fitted onto the joint ends (flange 11 and steel ring 13) of the two reinforced concrete pipe sections 1 and the outside of the formed cast-in-place concrete pipe section 2. The rubber tires 9 can improve the seismic resistance and protect the joint structure. The two reinforced concrete pipe sections 1 are connected by a joint structure, and an annular fracture guide groove 3 is set in the middle of the cast-in-place concrete pipe section 2. In the event of a fracture due to earthquakes or other reasons, the fracture is guided to occur at the annular fracture guide groove 3 in the cast-in-place concrete pipe section 2, making it easier to find the fracture point for repair. Moreover, it eliminates the need to replace the entire reinforced concrete pipe 1, resulting in low maintenance costs. Specifically, the axial section of the annular fracture guide groove 3 is V-shaped, making it easier to fracture, and the fracture surface is clean and easy to clean.

[0021] The beneficial technical effects of this embodiment are: it can guide the fracture location when the vibration is received, making it convenient to inspect and find the leak point, and convenient to pour the cast-in-place concrete pipe section for the second time.

Claims

1. A method for quickly locating vibration fracture points in underground concrete pipelines of water plants, characterized in that... The setup method includes the following steps: S1: A pouring interval is reserved between the joint ends of two precast reinforced concrete pipes. S2: At the pouring interval, install an inner mold for forming the inner wall of the cast-in-place concrete pipe section and connecting the two sections of the reinforced concrete pipe. S3: Install a segmented outer mold around the inner mold. The inner cavity shape of the outer mold after it is closed is consistent with the outer contour of the cast-in-place concrete pipe section to be poured. A ring-shaped protrusion is fixed on the outer mold at the position corresponding to the axial middle of the cast-in-place concrete pipe section to form a ring-shaped breakage guide groove. S4: Concrete is poured into the cavity between the inner mold and the outer mold through the pouring hole set on the outer mold, and then vibrated to compact it; after the concrete has cured to the required strength, the outer mold is removed to form the cast-in-place concrete pipe section with the annular fracture guide groove.

2. The method for quickly locating vibration fracture points in underground concrete pipelines of water plants as described in claim 1, characterized in that... In step S1, the specific method for reserving the pouring interval is as follows: A flange is fixed at the joint end of the two sections of the reinforced concrete pipe, and at least one steel ring is stacked on the flange by a sealing ring to form the casting interval.

3. The method for quickly locating vibration fracture points in underground concrete pipelines of water plants as described in claim 2, characterized in that... When stacking the steel rings, the sealing ring grooves on the end faces of adjacent steel rings are aligned and the sealing rings are fitted in.

4. The method for quickly locating vibration fracture points in underground concrete pipelines of water plants as described in claim 2, characterized in that... After stacking the steel rings, the flange and each of the steel rings are axially locked using a locking rod. The locking rod has a pressing block and a threaded section at each end. The threaded section of the locking rod passes through the screw hole of the flange and the locking threaded hole of each of the steel rings in sequence and is threaded into the locking threaded hole of the steel ring furthest from the flange.

5. The method for quickly locating vibration fracture points in underground concrete pipelines of water plants as described in claim 2, characterized in that... In step S4, the poured concrete simultaneously seeps into the sealing ring groove of the steel ring end face furthest from the flange, forming a concrete convex ring.

6. The method for quickly locating vibration fracture points in underground concrete pipelines of water plants as described in claim 1, characterized in that... In step S2, the specific method for installing the inner mold is as follows: A connecting convex ring and an inner mold connecting threaded hole are provided on the end face of the two sections of the reinforced concrete pipe; the two ends of the flexible sealing sleeve are respectively fitted onto the connecting convex ring; the pressing ring and the end of the flexible sealing sleeve are pressed and fixed on the end face of the reinforced concrete pipe using the inner mold fixing bolt.

7. The method for quickly locating vibration fracture points in underground concrete pipelines of water plants as described in claim 1, characterized in that... After step S4 is completed, several rubber tires are fitted onto the joint ends of the two sections of the reinforced concrete pipe and the outside of the already formed cast-in-place concrete pipe section.

Images