A kind of square culvert pipeline repair construction system and method

Abstract

The application relates to a square culvert pipeline repair construction system and method, wherein an innovative adjusting device in a spiral winding device is used to adjust the walking roller spacing and angle of a walking roller chain, so that the walking roller chain and the track frame are properly matched in tightness, and the movement track directions of the walking rollers are consistent, so that the walking roller chain can smoothly run, and high-precision inner lining pipes can be wound in a large-size square culvert pipeline; a support device with inner and outer combined support not only stabilizes the newly-wound inner lining pipeline, but also anchors the inner lining pipeline with the old pipeline to ensure positioning and centering, and creates conditions for high-quality grouting. The square culvert pipeline repair construction system and method are complementary to each other, and the construction efficiency of square culvert pipeline repair and the quality reliability of the final repair body are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of square culvert pipeline repair construction system and method, belong to trenchless pipeline repair technology. BACKGROUND

[0002] Urban drainage pipeline bears the key function of sewage and drainage. With the continuous advancement of urbanization in China, the maintenance and repair work of drainage pipeline is increasingly valued. Traditional repair method usually replaces pipeline by excavation method, which not only has large engineering quantity, high cost and long cycle, but also easily causes traffic congestion and environmental pollution, etc. It is difficult to meet the requirements of modern urban sustainable development. Trenchless repair technology is an advanced engineering technology for repairing damaged pipeline locally or integrally under the condition of no excavation or micro excavation. Compared with traditional excavation pipe replacement process, this technology has significant advantages such as small traffic impact, low environmental pollution, short construction period, less demand for operating personnel, high safety and low comprehensive cost, thereby providing a more feasible technical path for the renovation of urban underground pipeline. The advancing spiral winding pipeline construction equipment is a kind of trenchless pipeline repair construction equipment, which uses walking roller chain to walk on the inner wall of square culvert and performs spiral winding construction (such as Chinese utility model patent CN 210510728 U discloses a square culvert repair equipment). However, due to the large diameter of square culvert, when injecting cement mortar between the spiral winding repair inner lining pipe and the square culvert, the repair inner lining pipe is easily extruded by the cement mortar and cannot be kept centered with the square culvert. Moreover, the large size of square culvert also easily leads to large cumulative installation error of walking roller chain, non-parallel walking rollers and other problems, which cause operation jam. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a square culvert pipeline repair construction system and method, which can improve the repair quality and efficiency of square culvert.

[0004] To achieve the above-mentioned purpose, the present application provides a square culvert pipeline repair construction system, comprising:

[0005] A spiral winding device is used to form an inner lining pipe by spiral winding a strip profile in the square culvert. The spiral winding device comprises a track frame, a walking roller chain installed on the outer peripheral side of the track frame, and a machine head unit installed on the walking roller chain. The machine head unit is used to drive the walking roller chain to move around the outer peripheral side of the track frame and wind the profile to form the inner lining pipe. The walking roller chain is connected by a plurality of walking roller units. After winding a section of the inner lining pipe by the spiral winding device, a support device is installed in the inner lining pipe, which comprises a support frame arranged in the inner lining pipe. A plurality of inner support rods are arranged on the support frame and supported on the inner wall of the inner lining pipe. A plurality of outer support rods are also arranged on the support frame and supported on the inner wall of the square culvert by passing through the preformed through holes on the inner lining pipe.

[0006] Preferably, a grouting device for grouting cement mortar into the interlayer gap between the inner lining pipe and the box culvert pipe is further included, and the grouting device is used to grout cement mortar into the interlayer gap between the inner lining pipe and the box culvert pipe after the support device is installed in the inner lining pipe.

[0007] Preferably, a protective block is arranged between the inner support rod and the inner lining pipe.

[0008] Preferably, the protective block is a rubber block or a wooden block.

[0009] Preferably, the inner support rod and the outer support rod are threadedly connected with the support frame.

[0010] Corresponding to the box culvert pipe repair construction system, the application further provides a box culvert pipe repair construction method, comprising the following steps:

[0011] S1: measuring the width and height of the cross section of the box culvert pipe, and assembling the track frame, the walking roller chain and the machine head unit of the spiral winding device according to the measured size to complete the assembly of the spiral winding device;

[0012] S2: winding the inner lining pipe in the box culvert pipe by using the spiral winding device;

[0013] S3: assembling the support device in the inner lining pipe which has been wound, the inner support rod supporting the inner lining pipe and the outer support rod supporting the box culvert pipe;

[0014] S4: injecting cement mortar into the interlayer gap between the inner lining pipe and the box culvert pipe which have been built with the support device;

[0015] S5: removing the support device and filling the via hole of the outer support rod penetrating through the inner lining pipe after the injection of the cement mortar is completed.

[0016] Preferably, in step S2, the winding of the inner lining pipe is paused after winding a section of the inner lining pipe, and the subsequent steps are performed first; after step S5 is completed, steps S2 to S5 are repeated at the pipe part which has not been grouted with cement mortar until the construction is completed.

[0017] Preferably, in step S2, the spiral winding device continuously winds the inner lining pipe in the box culvert pipe; steps S3 to S5 are repeated at the pipe part which has not been grouted with cement mortar until the construction is completed.

[0018] Preferably, the step S1 further comprises the step of installing the first walking roller unit:

[0019] S11: when assembling the walking roller chain, the first walking roller unit is installed on the track frame, the distance D1 between the first walking roller unit and the reference side wall of the track slot of the track frame is adjusted, the perpendicularity angle C1 of the walking roller unit and the track slot of the track frame is adjusted, and then the first walking roller unit is fixed relative to the track frame by using the clamp; and then the remaining walking roller units are sequentially installed.

[0020] More preferably, the step S1 further comprises the step of installing the nth walking roller unit:

[0021] S12: the nth walking roller unit to be installed is connected to the (n-1)th walking roller unit already installed on the track frame, the distance Dn between the walking roller unit to be installed and the reference side wall of the track slot of the track frame is measured, the perpendicularity angle Cn of the walking roller unit to be installed and the track slot of the track frame is adjusted, if the measured distance Dn or the perpendicularity angle Cn exceeds the preset range, the nth walking roller unit is disassembled, and the Dn and Cn between the nth walking roller unit and the (n-1)th walking roller unit already installed are adjusted to meet the preset range.

[0022] Wherein, n≥2.

[0023] As described above, the square culvert pipeline repair construction system and method disclosed by the present application has the following beneficial effects:

[0024] The adjusting device designed in the spiral winding equipment adjusts the walking roller spacing and angle of the walking roller chain, so that the tightness of the walking roller chain and the track frame is appropriate, and the movement trajectory directions of the walking rollers are consistent, so that the walking roller chain can run smoothly, and high-precision inner lining pipes can be wound in large-size square culvert pipelines; the support device supporting the inner and outer parts stably supports the newly wound inner lining pipeline and anchors it to the old pipeline to ensure positioning and centering, which creates conditions for high-quality grouting. The square culvert pipeline repair construction system and method disclosed by the present application are complementary to each other, which significantly improves the construction efficiency of square culvert pipeline repair and the quality reliability of the final repair body. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A schematic view of a square culvert spiral winding equipment is shown.

[0026] Figure 2 A schematic view of a square culvert spiral winding equipment in a construction state is shown.

[0027] Figure 3 A schematic view of a square culvert pipeline with an inner lining pipeline wound therein is shown.

[0028] Figure 4A schematic view showing the state in which the support device is installed in the box culvert and the lining pipe.

[0029] Figure 5 A schematic view showing the state in which the cement mortar is poured between the box culvert and the lining pipe.

[0030] Figure 6 A schematic view showing the state in which the pouring of the cement mortar between the box culvert and the lining pipe is completed and the support device is removed.

[0031] Element number explanation

[0032] 1 - Box culvert

[0033] 2 - Lining pipe

[0034] 21 - Through hole

[0035] 3 - Belt-shaped section

[0036] 4 - Traveling roller chain

[0037] 41 - Traveling roller unit

[0038] 42 - Traveling roller

[0039] 43 - Telescopic connecting frame

[0040] 5 - Track frame

[0041] 6 - Head unit

[0042] 7 - Interlayer gap

[0043] 8 - Support frame

[0044] 81 - Inner support rod

[0045] 82 - Guard block

[0046] 83 - Outer support rod

[0047] 84 - Mortar layer

[0048] 85 - Filler

[0049] 86 - Inner frame

[0050] 87 - Outer frame

[0051] 88 - Support beam DETAILED DESCRIPTION

[0052] The embodiments of the present application will be described in detail by the following specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the present specification.

[0053] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to facilitate the understanding of the content disclosed in the present specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present application can be implemented, and therefore do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technology disclosed by the present application.

[0054] Please refer to Figures 1 to 6 The present application provides a square culvert repair construction system, comprising:

[0055] A spiral winding device is used for spiral winding a strip-shaped profile 3 to form an inner lining pipe 2 in the square culvert 1. The spiral winding device comprises a track frame 5, a walking roller chain 4 mounted on the outer peripheral side of the track frame 5, and a machine head unit 6 mounted on the walking roller chain 4, wherein the machine head unit 6 is used to drive the walking roller chain 4 to move around the outer peripheral side of the track frame 5 and wind the profile to form the inner lining pipe 2. The walking roller chain 4 is connected by a plurality of walking roller units 41. Please refer to Figures 4 to 6 After the spiral winding device winds a section of the inner lining pipe 2, a support device is installed in the inner lining pipe 2, comprising a support frame 8 arranged in the inner lining pipe 2, wherein a plurality of inner support rods 81 are arranged on the support frame 8 and supported on the inner wall of the inner lining pipe 2. A plurality of outer support rods 83 are also arranged on the support frame 8 and supported on the inner wall of the square culvert 1 through the prefabricated through holes 21 on the inner lining pipe 2.

[0056] The square culvert repair construction system of the present application, through the support device of internal and external joint support, not only stabilizes the newly wound inner lining pipe 2, but also anchors it to the old pipe to ensure positioning and centering, creating conditions for high-quality grouting. The square culvert repair construction system and method of the present application complement each other, significantly improving the construction efficiency of square culvert repair and the quality reliability of the final repair body.

[0057] Please refer to Figure 1, the spiral winding device is used for spirally winding the strip-shaped section 3 (usually a strip-shaped section 3 made of engineering plastic such as PVC, HDPE, etc. having good corrosion resistance and strength, and having male and female buckles on both sides) inside the square culvert pipeline 1 to be repaired to form a continuous and sealed new inner lining pipeline 2. The device mainly includes a track frame 5, a walking roller chain 4 and a machine head unit 6. The track frame 5 serves as the installation foundation and guide rail of the device, and is usually modularly assembled according to the cross-sectional size of the square culvert pipeline 1 to be repaired. The cross-sectional profile is usually similar to the inner profile of the square culvert pipeline 1 but slightly smaller in size to leave installation and operation space. The walking roller chain 4 is formed by connecting a plurality of walking roller units 41 at the head and tail through hinging or the like to form a closed ring chain wrapped around the outer circumferential side of the track frame 5. Each walking roller unit 41 is provided with a walking roller 42, which is connected to the track roller shaft (not shown in the figure) in the track slot of the track frame 5 through the telescopic connecting frame 43. The track roller shaft is provided with a track roller cooperating with the track slot, and the track roller rolls in the track slot, so that the walking rollers 42 walk together. The machine head unit 6 is used to drive the walking roller chain 4 to move along the track frame 5 in a circulating manner and press and lock the strip-shaped section 3. The machine head unit 6 is connected to the driving walking roller of the walking roller chain 4 to drive the walking roller chain 4 to move. The machine head unit 6 has a mechanism for pressing and locking the strip-shaped section 3, and continuously winds and presses and locks the strip-shaped section 3 along the spiral track, and finally forms an inner lining pipeline 2 outside the track frame 5.

[0058] The square culvert pipeline repair construction system of the present application further comprises a grouting device for pouring cement mortar into the interlayer gap between the inner lining pipeline and the square culvert pipeline. Please refer to Figures 5 to 6After installing the support device in the inner lining pipe 2, cement mortar is injected into the interlayer gap 7 between the inner lining pipe 2 and the culvert pipe 1 using a grouting device. Shims or other devices can be installed between some adjacent traveling roller units 41 to adjust the gap between them. During equipment assembly or debugging, shims are installed according to the actual conditions such as the straightness of the track frame 5 and the irregularity of the internal space of the culvert pipe 1. These shims are used to fine-tune the gap and relative angle between two connected traveling roller units 41, thereby ensuring that the entire traveling roller chain 4 can more accurately conform to the shape of the track frame 5, guaranteeing the roundness, dimensional accuracy, and uniformity of the gap between the wound inner lining pipe 2 and the old pipe. Due to processing and installation errors, the frame of the telescopic connecting frame 43 of the traveling roller unit 41 is not parallel to the traveling roller 42. It is necessary to adjust the angle between the frames of the telescopic connecting frames 43 of the two traveling roller units 41 to ensure that the traveling roller 42 is parallel. The threaded connector on the reverse threaded adjusting rod and the threaded hole on the telescopic connecting frame 43 can be clearance-fitted, thus accommodating situations where the lengths of the two reverse threaded adjusting rods are different between the two telescopic connecting frames 43, so as to achieve the adjustment of the angle between the traveling rollers 42. When it is necessary to adjust the relative deflection angle between the two telescopic connecting frames 43, the two reverse threaded adjusting rods can be finely adjusted to make the two telescopic frames have a certain angle, thereby ensuring that the traveling rollers 42 of the two traveling roller units 41 are parallel.

[0059] After the spiral winding equipment completes the winding of a section of the inner lining pipe 2 (usually a certain length, such as 10-30 meters), a support device needs to be installed inside this section of the inner lining pipe 2 to provide a stable inner mold for subsequent grouting and to prevent the inner lining pipe 2 from deforming due to grouting pressure. Figure 4 and Figure 5 As shown, the support frame 8 is a rigid frame structure that can be assembled and disassembled, including an inner frame 86 and an outer frame 87. The inner frame 86 and the outer frame 87 are rigidly connected by a support beam 88. The support frame 8 provides an installation base for the inner struts 81 and the outer struts 83. Multiple inner struts 81 are connected to the support frame 8. One end of each inner strut 81 is connected to the support frame 8 (e.g., by threaded connection, for easy length adjustment), and the other end abuts against the inner wall of the inner lining pipe 2. To protect the surface of the newly formed inner lining pipe 2 from scratches or pressure damage, a protective block 82 (such as a rubber block or a wooden block) is placed between the end of the inner strut 81 and the inner wall of the inner lining pipe 2. Multiple outer struts 83 are also connected to the support frame 8. After the inner lining pipe 2 is formed, through holes 21 are pre-drilled at predetermined positions. The outer struts 83 pass through these through holes 21, with one end connected to the support frame 8 (preferably by threaded connection), and the other end directly abutting against the original inner wall of the culvert pipe 1 to be repaired. The function of the external strut 83 is to firmly "anchor" the support device and even the entire inner lining pipe 2 system to the old pipe, resisting the buoyancy or displacement that may occur during grouting.

[0060] Corresponding to the square culvert pipeline repair construction system of the present application, the present application also provides a square culvert pipeline 1 repair construction method, which uses the square culvert pipeline repair construction system described in the above technical scheme for construction, including the following steps:

[0061] S1: Measure the width and height of the cross section of the square culvert pipeline 1, and assemble the track frame 5, walking roller chain 4 and machine head unit 6 of the spiral winding device according to the measured size, and complete the assembly of the spiral winding device;

[0062] S2: Use the spiral winding device to wind the inner lining pipeline 2 in the square culvert pipeline 1;

[0063] S3: Assemble the support device in the inner lining pipeline 2 that has been wound to form, the inner support rod 81 supports the inner lining pipeline 2, and the outer support rod 83 supports the square culvert pipeline 1;

[0064] S4: Inject cement mortar into the interlayer gap 7 between the inner lining pipeline 2 and the square culvert pipeline 1 that has been built with the support device; form a mortar layer 84;

[0065] S5: After completing the injection of cement mortar, remove the support device and fill the through hole 21 of the outer support rod 83 through the inner lining pipeline 2.

[0066] Before construction, the square culvert pipeline 1 to be repaired is evaluated, the width and height of the cross section of the square culvert pipeline 1 to be repaired are measured, and the internal condition is evaluated. According to the measured size, the track frame 5 and the walking roller chain 4 of the spiral winding device are assembled, and the assembled spiral winding device is transported into the square culvert pipeline 1 for construction.

[0067] Preferably, in step S2, after winding a section of the inner lining pipeline, the winding is paused, and the subsequent steps are performed first; after completing step S5, steps S2 to S5 are repeated in the pipeline part that has not been grouted until the construction is completed. For the case of long construction distance in the square culvert pipeline, in order to facilitate grouting, the winding is segmented, the support is segmented, and the grouting is segmented: after winding a section of the pipeline, the support is performed, and then the grouting operation is performed, and this is repeated until the construction is completed.

[0068] Preferably, in step S2, the spiral winding device continuously winds the inner lining pipeline in the square culvert pipeline; steps S3 to S5 are repeated in the pipeline part that has not been grouted until the construction is completed. For the case of short construction distance in the square culvert pipeline, the pipeline winding can be completed at one time, and the support and grouting operation are segmented until the construction is completed. Preferably, the step S1 further includes the step of installing the first walking roller unit 41:

[0069] S11: when assembling the walking roller chain 4, the first walking roller unit 41 is installed on the track frame 5, the distance D1 between the first walking roller unit 41 and the track slot reference side wall of the track frame 5 is adjusted, the perpendicularity angle C1 of the walking roller unit 41 and the track slot of the track frame 5 is adjusted, and then the first walking roller unit 41 is fixed relative to the track frame 5 by using a clamp; and then the remaining walking roller units 41 are sequentially installed.

[0070] More preferably, the step S1 further comprises the step of installing the nthwalking roller unit 41:

[0071] S12: the nthwalking roller unit 41 to be installed is connected to the (n-1)thwalking roller unit 41 already installed on the track frame 5, the distance Dn between the walking roller unit 41 to be installed and the track slot reference side wall of the track frame 5 is measured, the perpendicularity angle Cn of the walking roller unit 41 to be installed and the track slot of the track frame 5 is adjusted, if the measured distance Dn or the perpendicularity angle Cn exceeds the preset range, the nthwalking roller unit 41 is disassembled, and the Dn and Cn between the nthwalking roller unit and the (n-1)thwalking roller unit already installed are adjusted to meet the preset range;

[0072] Wherein, n≥2.

[0073] A high-precision electronic level or a laser calibration instrument can also be used to assist in adjusting the axial parallelism of the walking roller. A plane can be machined on the side wall of the track slot of the track frame 5 as a reference side wall, and the high-precision electronic level or laser tracker is used to calibrate and confirm the plane. At the installation starting position of the track slot, the first walking roller unit 41 is used as a reference roller, and a special tool clamp is used to rigidly lock it with the track frame 5, so that it becomes the absolute spatial reference for all subsequent corrections. Then, a double-cycle iteration method from the middle to both sides is adopted for parallel correction:

[0074] Starting from the locked reference roller, the installation adjustment is extended to both sides, and the reference roller is used to adjust the walking roller unit adjacent to it. The dial indicator or laser displacement sensor installed at both ends of the roller shaft is used to measure the parallelism deviation of the roller shaft of the walking roller unit 41 on both sides of the reference roller relative to the roller shaft of the reference roller at both ends, and the angle and gap of the installed walking roller unit are adjusted using shims according to the deviation size.

[0075] After the completion of the closed installation of the walking roller chain 4, the head unit 6 and other auxiliary components are installed, and the assembled equipment is sent to the starting working position in the square culvert pipe 1. The spiral winding equipment is started. The head unit 6 drives the walking roller chain 4 to move along the track frame 5, while continuously winding and locking the sent strip-shaped profiles 3 to form a tight inner lining pipe 2. The spiral winding equipment winds and moves forward at the same time. At the position where the outer support rod 83 is needed to be arranged, the prefabricated through hole 21 is opened on the inner lining pipe 2 synchronously or subsequently.

[0076] After a section of the inner lining pipe 2 is wound, the support device is assembled inside, the inner support rod 81 is installed, the end of the inner support rod 81 is tightly pressed against the inner wall of the inner lining pipe 2 by the protection block 82, and the support frame 8 is centered in the inner lining pipe 2. Each outer support rod 83 is installed so as to pass through the through hole 21 on the inner lining pipe 2 and finally tightly press against the original structure of the inner wall of the square culvert pipe 1. At this time, the entire inner lining pipe section is fixed in both directions. The grouting equipment is connected to the gap between the inner lining pipe 2 and the square culvert pipe 1 to inject cement mortar, and the pressure is maintained for a period of time to ensure that the interlayer is filled densely. After the grouting material reaches a certain strength (usually more than 70% of the design strength), the support device is loosened and removed in the opposite order. The through hole 21 through which the outer support rod 83 passes is sealed with a sealing material 85 compatible with the material of the inner lining pipe 2 to restore the integrity of the inner lining.

[0077] Based on the above specific embodiment, the walking roller chain is adjusted in the walking roller spacing and angle by the innovative adjusting device designed in the spiral winding equipment, so that the walking roller chain and the track frame are suitable in tightness, and the movement trajectory directions of the walking rollers are consistent, so that the walking roller chain can run smoothly, and the inner lining pipe with high precision can be wound in the square culvert pipe with large size. The support device with inner and outer joint support not only stabilizes the newly wound inner lining pipe, but also anchors and ensures the positioning and centering of the inner lining pipe and the old pipe, which creates conditions for high-quality grouting. The square culvert pipe repair construction system and method of the present application complement each other, and significantly improve the construction efficiency and quality reliability of the square culvert pipe repair.

[0078] In summary, the present application effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0079] The above embodiments only exemplarily illustrate the principles and effects of the present application, but are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A method for repairing culverts, characterized in that, The method comprises the following steps: S1: measuring the width and height of the cross section of the square culvert pipe, and assembling the track frame, the walking roller chain and the head unit of the spiral winding device according to the measured size, and completing the assembly of the spiral winding device; S2: winding the inner lining pipe in the square culvert pipe by using the spiral winding device; S3: assembling a support device in the inner lining pipe which has been wound, the support device comprising a support frame arranged in the inner lining pipe, a plurality of inner support rods supported on the inner wall of the inner lining pipe and a plurality of outer support rods supported on the inner wall of the square culvert pipe through the prefabricated through holes on the inner lining pipe; S4: injecting cement mortar into the interlayer gap between the inner lining pipe and the square culvert pipe in which the support device has been built; S5: removing the support device and filling the through holes of the outer support rods through the inner lining pipe after the injection of the cement mortar is completed; Wherein: The step S1 further comprises the steps of installing the first walking roller unit and the nth walking roller unit: S11: when assembling the walking roller chain, the first walking roller unit is installed on the track frame, the distance D1 between the first walking roller unit and the reference side wall of the track groove of the track frame is adjusted, the perpendicularity deviation angle C1 of the walking roller unit and the track groove of the track frame is adjusted, and then the first walking roller unit is fixed relative to the track frame by using the clamp; and then the remaining walking roller units are sequentially installed; S12: the nth walking roller unit to be installed is connected to the (n-1)th walking roller unit which has been installed on the track frame, the distance Dn between the walking roller unit to be installed and the reference side wall of the track groove of the track frame is measured, the perpendicularity deviation angle Cn of the walking roller unit to be installed and the track groove of the track frame is adjusted, and if the measured distance Dn or the perpendicularity deviation angle Cn exceeds the preset range, the nth walking roller unit is disassembled, and the Dn and Cn between the nth walking roller unit and the (n-1)th walking roller unit which has been installed are adjusted to meet the preset range, and n≥2.

2. The box culvert repair construction method according to claim 1, wherein, In step S2, after winding a section of the inner lining pipe, the winding is paused, and the subsequent steps are performed first; after step S5 is completed, steps S2 to S5 are repeated at the pipe part which has not been grouted with cement mortar until the construction is completed.

3. The box culvert repair construction method according to claim 1, wherein, In step S2, the spiral winding device continuously winds the inner lining pipe in the square culvert pipe; steps S3 to S5 are repeated at the pipe part which has not been grouted with cement mortar until the construction is completed.

4. A box culvert rehabilitation construction system for use in the box culvert rehabilitation construction method according to any one of claims 1 to 3, characterized by, The system comprises: A spiral winding device for winding an inner lining pipe in a square culvert pipe by using a strip-shaped profile; the spiral winding device comprises a track frame, a walking roller chain installed on the outer peripheral side of the track frame, and a head unit installed on the walking roller chain, the head unit being used to drive the walking roller chain to move around the outer peripheral side of the track frame and wind the profile to form the inner lining pipe; the walking roller chain is connected by a plurality of walking roller units; The support device is installed in the inner lining pipeline after the inner lining pipeline is wound by the spiral winding equipment, and the support device comprises a support frame arranged in the inner lining pipeline, a plurality of inner support rods and a plurality of outer support rods arranged on the support frame, the plurality of inner support rods are supported on the inner wall of the inner lining pipeline, and the plurality of outer support rods are supported on the inner wall of the square culvert pipeline by penetrating through the prefabricated through holes on the inner lining pipeline.

5. The box culvert rehabilitation construction system of claim 4, wherein, The grouting device for pouring cement mortar into the interlayer gap between the inner lining pipeline and the square culvert pipeline is further included, and the grouting device is used to pour the cement mortar after the support device is installed in the inner lining pipeline.

6. The box culvert rehabilitation construction system according to claim 4, wherein, The inner support rods and the outer support rods are in threaded connection with the support frame.

7. The box culvert rehabilitation construction system according to claim 4, wherein, The inner support rods are provided with protective blocks between the inner support rods and the inner lining pipeline.

8. The box culvert rehabilitation construction system of claim 7, wherein, The protective blocks are rubber blocks or wood blocks.

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