Temporary reinforcing and supporting structure for old pipeline during reconstruction of drainage pipe network

Abstract

The invention relates to the technical field of municipal drainage pipe construction, in particular to a temporary reinforcing and supporting structure for an old pipeline during drainage pipe network transformation, which comprises first supporting rods, the first supporting rods are vertically arranged and are arranged along the length direction of the old pipeline, and the first supporting rods are arranged to form two rows of retaining walls; the old pipeline is located between the two retaining walls; the temporary reinforcing and supporting structure further comprises second supporting rods, the first supporting rods are provided with supporting pieces used for supporting the second supporting rods, and the multiple second supporting rods are arranged in the length direction of the retaining wall at intervals. The second supporting rod is obliquely arranged; the second supporting rod is provided with abutting rods in a penetrating mode, the abutting rods are distributed at intervals in the length direction of the second supporting rod, and a driving assembly used for driving the abutting rods to make contact with the old pipeline is installed in the second supporting rod. The safety and stability of the old pipeline in the transformation process of the drainage pipe network can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of municipal drainage pipe construction, and in particular to a temporary reinforcement support structure for old pipes during drainage pipe network reconstruction. Background Art

[0002] With the continuous development and construction of the city, many underground drainage pipelines that were laid and put into use earlier are facing the problem of aging and damage due to their long service life, which makes their repair or overall relocation one of the inevitable tasks in the process of urban development.

[0003] Since the drainage pipe is in operation all year round, when excavating around the old pipe, the original supporting soil of the old pipe is hollowed out and the old pipe needs to be temporarily supported. The existing supporting structure mainly installs a bracket under the pipe.

[0004] With regard to the above-mentioned related technologies, the support can be installed only when there is no soil under the old pipeline. Part of the old pipeline is temporarily in a suspended state, and the stability of the old pipeline needs to be strengthened. Summary of the invention

[0005] In order to ensure that old pipes can be supported at all times, the present application provides a temporary reinforcement support structure for old pipes during drainage network reconstruction.

[0006] This application provides a temporary reinforcement support structure for old pipes during drainage network reconstruction, using the following technical solutions: A temporary reinforcement support structure for old pipes during drainage network reconstruction, comprising a first support rod, which is vertically arranged and arranged along the length direction of the old pipe. The first support rods are arranged to form a retaining wall, and the retaining wall has two rows, and the old pipe is located between the two retaining walls; the temporary reinforcement support structure also includes a second support rod, the first support rod is provided with a support member for supporting the second support rod, and a plurality of second support rods are arranged at intervals along the length direction of the retaining wall; the second support rod is inclined; an abutment rod is passed through the second support rod, and the abutment rods are distributed at intervals along the length direction of the second support rod, and a driving component for driving the abutment rod to contact the old pipe is installed in the second support rod.

[0007] By adopting the above technical scheme, the supporting structure forms two retaining walls by arranging the vertically arranged first support rods along the length direction of the old pipe. After the soil is excavated to determine the position of the old pipe, the retaining wall is installed first, and the old pipe is located between the two retaining walls. The retaining wall effectively prevents the soil from squeezing the old pipe from the side, reducing the occurrence of soil collapse. After the retaining wall is installed, the soil is further excavated to expose more of the old pipe, but when the soil can still have a certain degree of support effect on the old pipe, the second support rod is installed. The second support rod is in an inclined state and can directly pass through the soil and contact the outer pipe wall of the old pipe. One end of the second support rod is close to the radial bottom of the old pipe. The support member on the retaining wall has a supporting effect on the second support rod, and the second support rod has a supporting effect on the old pipe. The driving component then drives multiple abutment rods to insert into the soil and abut against different positions on the outer peripheral side of the old pipe. The second support rod and the abutment rod have a supporting and reinforcing effect on the old pipe, thereby improving the safety and stability of the old pipe during the drainage network reconstruction.

[0008] Optionally, the drive assembly includes an installation box and a flexible bag installed in the installation box, the flexible bag is used to be filled with a pressurized medium, one end of the abutment rod extends into the installation box and contacts the flexible bag, and the flexible bag is connected to a pressurizing device.

[0009] By adopting the above technical solution, the flexible bag is used to fill the pressurized medium, and the flexible bag is pressurized by the pressurizing equipment. The installation box can guide the expansion direction of the flexible bag, so that the flexible bag expands and pushes the abutment rod to be in close contact with the old pipe, thereby achieving support and reinforcement of the old pipe. This design can adjust the length of the abutment rod extending out of the second support rod according to the outer diameter of the old pipe, thereby improving the adaptability and flexibility of the support structure.

[0010] Optionally, the flexible bags and the abutment rods correspond one to one, and connecting tubes are connected between adjacent flexible bags, and the connecting tubes are made of rigid material.

[0011] By adopting the above technical solution and connecting adjacent flexible bags through connecting pipes, multiple flexible bags can be pressurized and expanded simultaneously, ensuring that the abutment rods can be evenly distributed and fully support the old pipeline.

[0012] Optionally, the second support rod is a hollow structure, an inner tube is coaxially installed in the second support rod, the installation box is installed on the inner tube, and the abutment rod passes through the inner tube.

[0013] By adopting the above technical solution, the second support rod with a hollow structure reduces weight, and the coaxial installation of the inner tube provides an accurate installation position for components such as the installation box and the flexible bag.

[0014] Optionally, a distance is left between the inner tube and the inner wall of the second support rod.

[0015] By adopting the above technical solution, when the abutment rods are in contact with the outer wall of the old pipe, the distance between the inner pipe and the second support rod can be used to fill mortar, which can fix the abutment rods and improve the stability of the abutment rods in supporting the old pipe.

[0016] Optionally, one end of the inner tube is connected to a mounting ring, the second support rod is rotatably mounted on the mounting ring, the end face of the mounting ring is connected to a plug-in rod, a positioning rod is installed on the inner wall of the second support rod, and the second support rod is provided with a through groove for the abutment rod to pass through, when the positioning rod and the abutment rod are in contact, the driving assembly is started, and the abutment rod passes through the through groove and out of the second support rod.

[0017] By adopting the above technical scheme, the second support rod and the inner tube are relatively rotated through the installation ring, so that the second support rod is rotated within a certain range. Before the second support rod is inserted into the soil, the second support rod is first rotated to dislocate the through groove and the abutment rod. The abutment rod is located inside the second support rod. During the process of inserting the second support rod into the soil, the abutment rod and the soil are not in contact. After the second support rod is installed in place, the plug-in rod is inserted into the soil, the inner tube no longer rotates, and the second support rod can be rotated. After the positioning rod of the second support rod abuts the abutment rod, the driving assembly drives the abutment rod to pass through the through groove and out of the second support rod, and the abutment rod abuts against the outer wall of the old pipe.

[0018] Optionally, a fixing assembly is installed between the positioning rod and the abutting rod.

[0019] By adopting the above technical solution, the abutment rod and the outer wall of the old pipe can maintain a stable abutment relationship.

[0020] Optionally, the fixing component is a fixing tube and an inflatable bag, the fixing tube and the inflatable bag are sealed and connected, the positioning rod is connected to the fixing tube, the fixing tube and the abutment rod correspond one to one, the inflatable bag is connected to a pressurizing device, and the inflatable bag is in contact with the abutment rod after being filled with a pressurized medium.

[0021] By adopting the above technical solution, the abutment rod is firmly fixed by the inflation bag expanding and coming into close contact with the abutment rod, thereby improving the stability and safety of the supporting structure.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. When the soil around the old pipeline has not been completely excavated, the cooperation of the retaining wall, the second support rod and the abutment rod can provide a stable temporary support effect for the old pipeline, so that the old pipeline can be stably supported during the renovation process; 2. The cooperation between the driving assembly and the abutment rod enables the abutment rod to smoothly pass through the soil and contact the outer wall of the old pipe, and can also adapt to old pipes with different outer diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application, which embodies the cooperation between the first support rod and the second support rod; Figure 2 is a cross-sectional view of the interior of the second support rod according to an embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of point A; Figure 4 is a schematic diagram of the structure of the embodiment of the present application when the positioning rod contacts the abutment rod; Figure 5 yes Figure 4 An enlarged schematic diagram of point B.

[0024] Explanation of the accompanying drawings: 10, first support rod; 20, second support rod; 21, through groove; 22, positioning rod; 23, fixing tube; 24, inflatable bag; 30, support ring; 40, limiting ring; 50, abutment rod; 60, drive assembly; 61, installation box; 62, flexible bag; 63, delivery pipe; 64, connecting pipe; 70, inner tube; 71, installation groove; 72, through hole; 80, installation ring; 90, plug-in rod; 100, old pipe. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-5 This application is described in further detail.

[0026] The embodiment of the present application discloses a temporary reinforcement support structure for old pipes during reconstruction of a drainage network.

[0027] Reference Figure 1 A temporary reinforcement support structure for an old pipe during the reconstruction of a drainage network includes a first support rod 10. The first support rod 10 is a round rod-shaped wooden structure. The first support rod 10 is arranged along the length direction of the old pipe 100. The first support rod 10 is arranged to form a retaining wall, and the retaining wall is arranged vertically. There are two rows of retaining walls, and the old pipe 100 is located between the two rows of retaining walls. The side of the retaining wall facing away from the old pipe 100 is in contact with the soil. There is a gap between the retaining wall and the old pipe 100. When excavating a trench along the old pipe 100, the soil between the retaining wall and the old pipe 100 needs to be removed. The retaining wall forms a barrier, which has a reinforcement effect on the trench wall and reduces the collapse of the trench wall.

[0028] Reference Figure 1 and Figure 2The temporary reinforcement support structure also includes a second support rod 20, which is a hollow steel pipe structure. The second support rod 20 is tilted, and the upper end of the second support rod 20 is close to the upper end of the first support rod 10. The first support rod 10 is equipped with a support member for supporting the second support rod 20. The support member is a support ring 30, which can be fixedly installed on the first support rod 10 by screws. The second support rod 20 is coaxially sleeved with a limit ring 40 made of metal material. The second support rod 20 passes through the support ring 30 and then is inserted into the soil. The installation of the support ring 30 determines the tilt direction of the second support rod 20. After determining the insertion depth of the second support rod 20, the limit ring 40 is fixedly welded to the second support rod 20, and the end faces of the limit ring 40 and the support ring 30 are abutted, so that the support ring 30 can play a stable supporting effect on the second support rod 20. Before excavating the soil, when the approximate position of the old pipeline 100 is determined (using methods such as underground pipeline detectors and geological radar detection), and after determining the approximate outer diameter of the old pipeline 100 (using methods such as consulting construction and maintenance records, on-site and estimated methods), the basic installation position of the first support rod 10 is determined according to the angle between the central axis of the first support rod 10 and the central axis of the support ring 30, ensuring that when the second support rod 20 is inserted into the soil, one end of the second support rod 20 can be located below the old pipe 100.

[0029] Reference Figure 2 , there is a gap between the first support rod 10 and the outer wall of the old pipe 100. The second support rod 20 is penetrated by abutment rods 50, and the abutment rods 50 are spaced apart along the length direction of the second support rod 20. A driving assembly 60 for driving the abutment rod 50 to contact the old pipe 100 is installed in the second support rod 20, and a rubber pad is installed at one end of the abutment rod 50 that contacts the old pipe 100. Multiple abutment rods 50 are in contact with the outer wall of the old pipe 100 respectively, which can increase the contact between the second support rod 20 and the old pipe 100, and can also provide better temporary support effect for the pipe.

[0030] Specifically, refer to Figure 3The driving assembly 60 includes an installation box 61 and a flexible bag 62 installed in the installation box 61. The flexible bag 62 is used to contain a medium with pressure (water or gas). The medium used in the embodiment of the present application is preferably water. The flexible bag 62 is specifically a pressure water bag. The pressure water bag is a special water-filled bag filled with water or other liquids. This embodiment simulates different pressures by the amount of water filled. The pressure water bag is mainly composed of three layers. The inside is a tough plastic film, which is used to protect the water bag from the influence of liquid and pressure; the middle is a rubber layer, which ensures that the liquid inside the water bag will not leak by applying pressure; the outside is a waterproof material to increase the waterproof performance of the water bag. The flexible bag 62 is connected to a delivery pipe 63, and the delivery pipe 63 is connected to a pressurizing device (not shown in the figure) and a water tank (not shown in the figure). The pressurizing device is specifically a water pump. The water pump fills water into the flexible bag 62 at high pressure. The flexible bag 62 expands and deforms to drive the abutment rod 50 to move, so that the abutment rod 50 can pass through the soil and contact the outer wall of the old pipe 100. The mounting box 61 is used to contain and limit the flexible bag 62 so that the flexible bag 62 can drive the abutment rod 50 when deformed after being filled with high-pressure medium.

[0031] More specifically, see Figure 3 The flexible bag 62 is spherical after being filled with water. In order to enable the flexible bag 62 to better drive the abutment rod 50, the flexible bag 62 and the abutment rod 50 correspond one to one. The multiple flexible bags 62 are interconnected and connected through a connecting pipe 64. The connecting pipe 64 is made of a rigid material. The connecting pipe 64 is only used to transmit water but does not deform. The multiple flexible bags 62 are connected to a delivery pipe 63. When the flexible bag 62 is filled with liquid, the multiple abutment rods 50 contact the outer wall of the old pipe 100 at different positions, and the deformation degree of the flexible bag 62 is also different. In order to minimize the deformation degree of two adjacent flexible bags 62, the lengths of adjacent abutment rods 50 are different.

[0032] Further, refer to Figure 2 and Figure 3An inner tube 70 is coaxially installed inside the second support rod 20. The inner tube 70 is also a hollow steel tube structure. A gap is left between the outer wall of the inner tube 70 and the inner wall of the second support rod 20. A mounting ring 80 is connected to one end of the inner tube 70. The second support rod 20 is mounted on the mounting ring 80. A conical plug-in rod 90 extends from the end surface of the mounting ring 80 away from the second support rod 20, so that the second support rod 20 can be better inserted into the soil. The plug-in rod 90 is made of stainless steel. The inner tube 70 is provided with a mounting groove 71 and a through hole 72. The mounting box 61 is installed in the mounting groove 71. The mounting box 61 partially extends out of the inner tube 70 and contacts the inner wall of the second support rod 20. The conveying pipe 63 connected to the mounting box 61 is located in the inner tube 70. The abutment rod 50 passes through the inner tube 70 through the through hole 72. The abutment rod 50 is in an initial state before being pushed by the driving group. The end of the abutment rod 50 away from the installation box 61 is located in the second support rod 20. During the process of the second support rod 20 being inserted into the soil, the abutment rod 50 has no direct contact with the soil.

[0033] Reference Figure 3 and Figure 4 In order to prevent the abutment rod 50 from directly contacting the soil during the insertion of the second support rod 20, the second support rod 20 is rotatably mounted on the mounting ring 80, and the rod wall of the second support rod 20 is provided with a through slot 21 for the abutment rod 50 to pass through, and the through slot 21 corresponds to the abutment rod 50. A positioning rod 22 is installed on the inner wall of the second support rod 20, and the positioning rod 22 extends along the length direction of the second support rod 20. When the second support rod 20 is rotated to make the positioning rod 22 contact the abutment rod 50, the abutment rod 50 can pass through the through slot 21 and out of the second support rod 20. Rotating the second support rod 20 can also make the through slot 21 of the second support rod 20 and the abutment rod 50 misaligned with each other, so that the abutment rod 50 is located inside the second support rod 20, and when the second support rod 20 is inserted into the soil, the abutment rod 50 can be hidden.

[0034] After the second support rod 20 is installed, the driving assembly 60 drives the abutment rod 50 to abut against the old pipe 100. Mortar can be filled into the second support rod 20 to keep the abutment rod 50 in abutment with the old pipe 100, and the mortar filling part is in the gap between the outer wall of the inner tube 70 and the inner wall of the second support rod 20. After the mortar solidifies, it has a fixing effect on the abutment rod 50, so that the abutment rod 50 can be better kept in a fixed state for auxiliary support of the old pipe 100.

[0035] Furthermore, a fixing assembly is installed between the positioning rod 22 and the abutting rod 50, and the fixing assembly is a fixing tube 23 and an inflatable bag 24. There are two inflatable bags 24 on a fixing rod and they are symmetrically distributed on the fixing rod, and the inflatable bag 24 is sealed and connected to the fixing rod. The positioning rod 22 has a hollow part, and one end of the fixing tube 23 is fixedly and sealedly connected to the positioning rod 22. The fixing tube 23 and the abutting rod 50 correspond one to one. When the positioning rod 22 abuts on the abutting rod 50, the fixing tube 23 is located below the abutting rod 50, and the abutting rod 50 can still pass out of the second support rod 20 after receiving the drive assembly 60. The fixing tube 23 is connected to the positioning rod 22, and the positioning rod 22 is connected to an inflatable device. The working principle of the inflatable device generally involves the compression and injection of gas. For example, an electric inflatable device drives a compressor or pump by an electric motor to compress and inject air or other gas into an object that needs to be inflated. Manual inflatable devices rely on human operation, such as a manual air pump, which compresses and injects gas through the reciprocating motion of a piston. Since there are multiple fixing tubes 23, the inflation device adopts an electric restart device. When the abutment rod 50 abuts against the outer wall of the old pipe 100, the inflation device presses gas into the positioning rod 22, and the inflatable bag 24 expands after being inflated, and the inflatable bag 24 and the abutment rod 50 are in close contact, so that the abutment rod 50 and the positioning rod 22 form a fixed relationship.

[0036] In terms of the selection of mortar and positioning pieces, two adjacent second support rods 20 can use different methods to fix the abutment rod 50, so that part of the second support rods 20 can be removed during the construction process to adapt to different working conditions during the construction process.

[0037] The implementation principle of the temporary reinforcement support structure of the old pipe during the reconstruction of the drainage pipe network in the embodiment of the present application is: The first support rod 10 is vertically arranged and arranged along the length direction of the old pipe 100 to form two rows of retaining walls before excavating the soil. The two rows of retaining walls effectively block the pressure from the soil side. The second support rod 20 contacts the outside of the old pipe 100 through the abutment rod 50, providing additional support for the pipe. In particular, when there is soil at the radial bottom of the old pipe 100 that has a supporting effect on the old pipe 100, the second support rod 20 is inserted first, and one end of the second support rod 20 extends under the old pipe 100 and is inserted into the soil. The abutment rod 50 does not contact the soil during the insertion of the second support rod 20, so that the second support rod 20 is smoothly inserted. When the second support rod 20 is inserted into the soil, the plug rod 90 is inserted deep into the soil, and the inner pipe 70 remains stationary. The second support rod 20 is rotated to make the positioning rod 22 and the abutment rod 50 abut against each other, and then the water pump is turned on. The flexible bag 62 is filled with pressurized water to expand the flexible bag 62, thereby driving the abutment rod 50 to abut against the outer wall of the old pipe 100. Since the outer wall of the old pipe 100 is an arc surface, when the ends of multiple abutment rods 50 are also distributed in arcs, the abutment rod 50 is fixed to the second support rod 20 by mortar or a fixing component (the inflatable bag 24 is filled with pressurized gas), and the soil is continued to be excavated. When part of the old pipe 100 appears to be suspended in the air, the cooperation between the second support rod 20 and the abutment rod 50 can provide stable support for the old pipe 100. Finally, leveling and installation of a jack below the old pipe 100 can further enhance the support for the old pipe 100.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A temporary reinforcement support structure for old pipes during drainage network reconstruction, characterized in that: The invention comprises a first support rod (10), the first support rod (10) being arranged vertically and arranged along the length direction of the old pipe (100), the first support rods (10) being arranged to form a retaining wall, the retaining wall having two rows, and the old pipe (100) being located between the two retaining walls; the temporary reinforcement support structure further comprises a second support rod (20), the first support rod (10) being provided with a support member for supporting the second support rod (20), a plurality of the second support rods (20) being arranged at intervals along the length direction of the retaining wall, and the second support rods (20) being arranged in an inclined manner; the second support rod (20) being provided with an abutment rod (50), the abutment rods (50) being arranged at intervals along the length direction of the second support rod (20), and a driving assembly (60) for driving the abutment rod (50) to contact the old pipe (100) being installed in the second support rod (20).

2. The temporary reinforcement support structure for old pipes during drainage network reconstruction according to claim 1 is characterized by: The driving assembly (60) comprises an installation box (61) and a flexible bag (62) installed in the installation box (61); the flexible bag (62) is used to be filled with a pressurized medium; one end of the abutment rod (50) extends into the installation box (61) and contacts the flexible bag (62); and the flexible bag (62) is connected to a pressurizing device.

3. The temporary reinforcement support structure for old pipes during drainage network reconstruction according to claim 2 is characterized by: The flexible bags (62) and the abutment rods (50) correspond one to one, and connecting pipes (64) are connected between adjacent flexible bags (62), and the connecting pipes (64) are made of rigid material.

4. The temporary reinforcement support structure for old pipes during drainage network reconstruction according to claim 2 is characterized by: The second support rod (20) is a hollow structure, an inner tube (70) is coaxially mounted inside the second support rod (20), the mounting box (61) is mounted on the inner tube (70), and the abutment rod (50) passes through the inner tube (70).

5. The temporary reinforcement support structure for old pipes during drainage network reconstruction according to claim 4 is characterized by: A distance is left between the inner tube (70) and the inner wall of the second support rod (20).

6. The temporary reinforcement support structure for old pipes during drainage network reconstruction according to claim 5, characterized in that: One end of the inner tube (70) is connected to a mounting ring (80), the second support rod (20) is rotatably mounted on the mounting ring (80), an end surface of the mounting ring (80) is connected to a plug-in rod (90), a positioning rod (22) is mounted on the inner wall of the second support rod (20), the second support rod (20) is provided with a through slot (21) for the abutment rod (50) to pass through, when the positioning rod (22) and the abutment rod (50) are in contact, the driving assembly (60) is started, and the abutment rod (50) passes through the through slot (21) and out of the second support rod (20).

7. The temporary reinforcement support structure for old pipes during drainage network reconstruction according to claim 6 is characterized by: A fixing assembly is installed between the positioning rod (22) and the abutment rod (50).

8. The temporary reinforcement support structure for old pipes during drainage network reconstruction according to claim 7 is characterized by: The fixing assembly comprises a fixing tube (23) and an inflatable bag (24); the fixing tube (23) and the inflatable bag (24) are sealed and connected; the positioning rod (22) and the fixing tube (23) are connected; the fixing tube (23) and the abutment rod (50) correspond one to one; the inflatable bag (24) is connected to a pressurizing device; and the inflatable bag (24) contacts the abutment rod (50) after being filled with a pressurized medium.

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