Temporary consolidation device for circular jacking pipe joint

Abstract

The utility model belongs to the field of temporary consolidation of pipe joints, and particularly relates to a temporary consolidation device for a circular pipe jacking pipe joint, an outer supporting sleeve is jacked and supported through three inner supporting pipes, the outer supporting sleeve is tightly attached to the inner wall of the pipe joint under the acting force of the inner supporting pipes, and a rubber layer is arranged on the outer side of an arc-shaped steel plate. The rubber layer not only can effectively protect the concrete surface of the inner wall of the pipe joint, but also can provide strong frictional resistance between the pipe joint and the outer supporting sleeve, and two adjacent pipe joints are temporarily consolidated under the combined action of the jacking force of the inner supporting pipe, the outer supporting sleeve and the frictional resistance of the outer supporting sleeve and the like. Therefore, compared with a conventional temporary consolidation mode between pipe joints, the temporary consolidation device for the circular jacking pipe joints is simpler and quicker to operate. Meanwhile, when temporary consolidation between the pipe joints is provided, the pipe culvert prefabrication cost does not need to be increased (in other words, corresponding embedded parts do not need to be embedded or special reinforcement treatment does not need to be conducted on the ends in the prefabrication process), and the inner surface of the pipe culvert does not need to be treated or post-treated.

Description

Technical Field

[0001] The present application relates to the technical field of temporary consolidation of pipe segments, and in particular to a temporary consolidation device for circular jacking pipe segments. Background Art

[0002] Pipe jacking construction is an underground pipeline construction method developed after shield construction. In comparison, it has its unique advantages in the construction of small-diameter tunnels, underground pipelines, integrated pipeline corridors, and old urban area renovation in urban central areas, and its development space is also growing. Mechanical pipe jacking construction technology is also becoming more and more mature, and the construction pipe diameter is also developing towards large and extra-large diameters, and there is a trend of replacing small shield machines.

[0003] Pipe jacking construction is a complex project involving multiple links and factors. Project failure may be caused by a variety of reasons, such as unreasonable design, poor material quality, and construction operation errors. Among them, improper operation by technical personnel may cause the pipeline to tilt up, sink, or deviate significantly to the left and right, resulting in excessive gaps at the pipe joints or damage to the concrete; when the pipe axis deviation is corrected multiple times, the pipe joints at the slope change position are not temporarily consolidated in time, resulting in uneven force on the concrete at the pipe joints and damage; during the jacking process, the fuselage "dives" in soft strata, and the pipe joints (4-5) immediately after the tail of the machine are not temporarily consolidated, resulting in increased gaps between the pipe joints and increasing the quality risk of leakage between the pipe joints in the later stage.

[0004] The above situation is a common problem during construction, which affects the overall construction progress and quality. Moreover, the conventional treatment methods for these problems can improve the economy, quality and safety. During the conventional consolidation treatment, the inner wall of the culvert is reserved or drilled to install a tie device, which not only affects the appearance of the inner wall of the pipe segment, but also increases the cost of pipe segment production or subsequent repair costs. Utility Model Content

[0005] An embodiment of the present application provides a temporary consolidation device for a circular jacking pipe segment, which is used to solve the problem that the existing consolidation method requires reserving or drilling holes on the inner wall of the culvert to install a tie device, which not only affects the appearance of the inner wall of the pipe segment, but also increases the cost of pipe segment production or subsequent repair costs.

[0006] To achieve the above objectives, the present application provides a temporary consolidation device for a circular pipe jacking segment, comprising:

[0007] An outer support sleeve, comprising 3N circular arc steel plates capable of forming a circular ring and bolts for connecting two adjacent circular arc steel plates, where N is a positive integer; a rubber layer is provided on the outer side of the circular arc steel plates, and a connecting seat is fixed on the inner side of the opposite ends of each circular arc steel plate, and the connecting seat is provided with a connecting hole for the bolt to pass through; a mounting seat is fixed to the middle portion of the inner side of each circular arc steel plate, and the mounting seat includes a central backrest plate and diagonal support plates symmetrically fixed on both sides of the central backrest plate, and the diagonal support plates are fixed with positioning protrusions; and

[0008] Three inner support tubes are located inside the outer support sleeve. The ends of the inner support tubes can be sleeved on the positioning protrusions. The three inner support tubes are connected to the mounting seats in the middle of three of the arc-shaped steel plates to form a triangular top support structure.

[0009] Optionally, the center backrest plate is provided with a grouting hole penetrating the arc-shaped steel plate and the rubber layer.

[0010] Optionally, the outer support sleeve includes six arc-shaped steel plates.

[0011] Optionally, the length of the inner support tube is adjustable.

[0012] Optionally, the inner support tube includes two steel pipes and an adjusting sleeve, the inner diameters of the two steel pipes are larger than the outer diameter of the positioning protrusion, the outer walls of the two steel pipes are provided with external threads with opposite rotation directions, and the inner walls at both ends of the adjusting sleeve are provided with internal threads with opposite rotation directions, and the two ends of the adjusting sleeve are respectively threadedly connected to the two steel pipes. By rotating the adjusting sleeve, the two steel pipes can move toward or away from each other.

[0013] Optionally, the connecting seat includes a connecting plate and a rib plate, the connecting plate is vertically fixed to the inner side of the end of the arc-shaped steel plate, the connecting hole is arranged on the connecting plate, and the rib plate is connected between the connecting plate and the arc-shaped steel plate.

[0014] Optionally, the mounting seat further includes a reinforcing rib plate arranged between the diagonal support plate and the central backrest plate.

[0015] Optionally, the positioning protrusion is spherical or cylindrical.

[0016] Optionally, the angle between the diagonal support plate and the central backrest plate is 30 degrees.

[0017] The beneficial effect of the temporary consolidation device for circular jacking pipe sections provided by the present application is that: compared with the prior art, the temporary consolidation device for circular jacking pipe sections of the present application supports the outer support sleeve through three inner support pipes. Under the action of the inner support pipes, the outer support sleeve is pressed against the inner wall of the pipe section. A rubber layer is provided on the outer side of the arc-shaped steel plate. During extrusion, the rubber layer can not only effectively protect the concrete surface of the inner wall of the pipe section, but also provide a strong frictional resistance between the pipe section and the outer support sleeve. Under the combined action of the supporting force of the inner support pipe, the outer support sleeve and its frictional resistance, the two adjacent pipe sections are temporarily consolidated. Therefore, the temporary consolidation device for circular jacking pipe sections is simpler and faster to operate than the conventional temporary consolidation method between pipe sections. At the same time, when providing temporary consolidation between pipe sections, there is no need to increase the prefabrication cost of the culvert (i.e., there is no need to bury the corresponding embedded parts or perform special reinforcement treatment on the ends during prefabrication), nor is there any need to process the inner surface of the culvert or perform post-processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] in:

[0020] Figure 1 This is a diagram showing a temporary consolidation device for a circular jacking pipe segment in use according to an embodiment of the present application;

[0021] Figure 2 This is a side view of an arc-shaped steel plate in an outer support sleeve of a temporary consolidation device for a circular jacking pipe segment shown in one embodiment of the present application;

[0022] Figure 3 This is a schematic cross-sectional view of the arc-shaped steel plate in the outer support sleeve of the temporary consolidation device for a circular jacking pipe segment shown in one embodiment of the present application;

[0023] Figure 4 This is a schematic cross-sectional structural diagram of an inner support pipe of a temporary consolidation device for a circular jacking pipe segment shown in one embodiment of the present application.

[0024] Description of main component symbols:

[0025] 100, external support sleeve;

[0026] 110, arc-shaped steel plate; 111, rubber layer; 112, connecting seat; 11201, connecting hole; 1121, connecting plate; 1122, rib plate; 113, mounting seat; 1131, center backrest plate; 11311, grouting hole; 1132, diagonal support plate; 1133, positioning protrusion; 1134, reinforcing rib plate;

[0027] 120, bolts;

[0028] 200, internal support tube;

[0029] 210, steel pipe;

[0030] 220. Adjusting sleeve. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0032] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0035] It should also be noted that, in the embodiments of the present application, the same figure mark represents the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0036] The embodiment of the present application provides a temporary consolidation device for a circular pipe jacking segment, such as Figure 1-Figure 3As shown, the temporary consolidation device for a circular jacking pipe segment includes an outer support sleeve 100 and three inner support pipes 200. The outer support sleeve 100 includes 3N circular arc steel plates 110 that can be arranged to form a circular ring, and bolts 120 for connecting two adjacent circular arc steel plates 110, where N is a positive integer. A rubber layer 111 is provided on the outer side of the circular arc steel plates 110. Connecting seats 112 are fixed on the inner sides of the opposite ends of each circular arc steel plate 110, and the connecting seats 112 are provided with connecting holes 11201 for the bolts 120 to pass through. A mounting seat 113 is fixed to the middle of the inner side of each circular arc steel plate 110. The mounting seat 113 includes a central backrest plate 1131 and diagonal support plates 1132 symmetrically fixed on both sides of the central backrest plate 1131, and positioning protrusions 1133 are fixed on the diagonal support plates 1132. The three inner support tubes 200 are located inside the outer support sleeve 100 , and the ends of the inner support tubes 200 can be sleeved on the positioning protrusions 1133 . The three inner support tubes 200 are connected to the mounting seats 113 in the middle of three of the arc-shaped steel plates 110 to form a triangular support structure.

[0037] It should be noted that the number of the arc-shaped steel plates 110 can be set to three, six, nine, etc. according to the diameter of the pipe segment, and is not limited here. Preferably, the outer support sleeve 100 includes six arc-shaped steel plates 110.

[0038] The outer side of the arc-shaped steel plate 110 is the convex side, which is the side that fits against the inner wall of the pipe segment when in use; the inner side of the arc-shaped steel plate 110 is the concave side, which is the side that faces away from the inner wall of the pipe segment when in use.

[0039] In the embodiment of the present application, the circular jacking pipe segment temporary consolidation device supports the outer support sleeve 100 through three inner support pipes 200. Under the force of the inner support pipe 200, the outer support sleeve 100 is pressed against the inner wall of the pipe segment. The outer side of the arc-shaped steel plate 110 is provided with a rubber layer 111. During extrusion, the rubber layer 111 can not only effectively protect the concrete surface of the inner wall of the pipe segment, but also provide a strong frictional resistance between the pipe segment and the outer support sleeve 100. Under the combined action of the supporting force of the inner support pipe 200, the outer support sleeve 100 and its frictional resistance, the two adjacent pipe segments are temporarily consolidated. Therefore, the circular jacking pipe segment temporary consolidation device is simpler and faster to operate than the conventional temporary consolidation method between pipe segments. At the same time, when providing temporary consolidation between pipe segments, there is no need to increase the prefabrication cost of the pipe culvert (that is, there is no need to bury the corresponding embedded parts or perform special reinforcement treatment on the end during prefabrication), nor is there any need to process the inner surface of the pipe culvert or perform post-processing.

[0040] Specifically, the arc-shaped steel plate 110 can be prepared by the following method: a 50-60 cm wide and 15 mm thick steel plate (Q345) is processed into a steel ring that is 1 cm smaller than the inner diameter of the pipe segment, and then the processed steel ring is divided into 3N equal parts of arc steel blocks, and finally the burrs around the steel plate are polished off.

[0041] The positioning protrusion 1133 is spherical or cylindrical, and its outer diameter is slightly smaller than the inner diameter of the end of the inner support tube 200 .

[0042] In one embodiment, if Figure 3 As shown, a grouting hole 11311 is provided on the center backrest plate 1131 , which passes through the arc-shaped steel plate 110 and the rubber layer 111 .

[0043] It should be noted that when gaps or concrete between pipe sections are damaged, they are usually cleaned first and then high-grade mortar is directly scraped into the gaps with a scraper. The depth of the mortar is relatively shallow. Although the surface looks dense, its sealing and durability are relatively poor. To deal with concrete damage at the ends of pipe sections, the loose concrete and protruding aggregate particles at the collapsed edges and corners are first chiseled off → the collapsed corners on the pipe sections are cleaned with a wire brush and rinsed with clean water → after the damaged surface is dry → the repair material is mixed and repaired layer by layer → polished after curing. This method makes it difficult to guarantee the quality of the concrete damage on the top.

[0044] In this embodiment of the present application, grouting holes 11311 are provided on the center backrest plate 1131, penetrating the arc-shaped steel plate 110 and the rubber layer 111. When repairing gaps between pipe segments or concrete damage, after the outer support sleeve 100 is firmly attached to the culvert, repair material can be injected through the grouting holes 11311 into the gaps between pipe segments and the damaged areas, thus easily completing the repair process. When repairing gaps between pipe segments or concrete damage, grouting holes 11311 need only be placed in the corresponding positions.

[0045] During the later stages of crack and concrete damage treatment, the inner support tube 200 allows the annular rubber layer 111 to serve as a "sleeve mold" for subsequent treatment, a "sleeve mold" for grouting, and a support and curing mold for concrete defect repair. The rubber layer 111 is cut to the size and shape of the arc-shaped steel plate 110 and securely affixed to it, preventing the "slurry" from leaking out and contaminating the culvert's concrete surface during subsequent grouting and concrete defect repair.

[0046] When later grouting treatment is required, valves are first installed on all grouting holes 11311. The external grouting pipeline only needs to be connected to the external valve on the grouting hole 11311 at the treatment position. During operation, it is only necessary to open the external valve on the grouting hole 11311 adjacent to the external grouting pipe for venting and inspection.

[0047] In one embodiment, if Figure 1 and Figure 4 As shown, the length of the inner support tube 200 is adjustable, so that the inner support tube 200 can be expanded inside the outer support sleeve 100.

[0048] In one implementation, the inner support tube 200 includes two steel tubes 210 and an adjusting sleeve 220. The inner diameters of the two steel tubes 210 are both larger than the outer diameter of the positioning protrusion 1133. The outer walls of the two steel tubes 210 are provided with external threads with opposite rotation directions, and the inner walls of the two ends of the adjusting sleeve 220 are provided with internal threads with opposite rotation directions. The two ends of the adjusting sleeve 220 are respectively screwed to the two steel tubes 210. By rotating the adjusting sleeve 220, the two steel tubes 210 can be moved toward or away from each other to achieve length adjustment of the inner support tube 200.

[0049] During installation, first insert one end of one of the steel pipes 210 into the positioning protrusion 1133 on the mounting seat 113, then rotate the adjusting sleeve 220 to insert one end of the other steel pipe 210 into the positioning protrusion 1133 on the corresponding mounting seat 113, and finally continue to rotate the adjusting sleeve 220 to make the rubber layer 111 fit tightly against the inner wall of the pipe section, and the outer support sleeve 100 is subjected to a stable overall force, thus completing the temporary consolidation.

[0050] In one embodiment, if Figure 1 and- Figure 3 As shown, the connecting seat 112 includes a connecting plate 1121 and a rib 1122. The connecting plate 1121 is vertically fixed to the inner side of the end of the arc-shaped steel plate 110. The connecting hole 11201 is set on the connecting plate 1121. The rib 1122 is connected between the connecting plate 1121 and the arc-shaped steel plate 110 and avoids the connecting hole 11201.

[0051] Specifically, the connecting plate 1121 is a rectangular steel plate, the rib plate 1122 is a triangular steel plate, and the connecting plate 1121, the rib plate 1122 and the arc-shaped steel plate 110 are fixed by welding.

[0052] In one embodiment, if Figure 1 and- Figure 3 As shown, the mounting base 113 further includes a reinforcing rib plate 1134 disposed between the diagonal support plate 1132 and the central backrest plate 1131. By providing the reinforcing rib plate 1134, the connection strength between the central backrest plate 1131 and the diagonal support plate 1132 is improved.

[0053] Specifically, the reinforcing rib 1134 is a triangular steel plate, while the diagonal support plate 1132 and the center backrest plate 1131 are cut and processed from steel plates. The diagonal support plate 1132, the center backrest plate 1131, the reinforcing rib 1134, and the arc-shaped steel plate 110 are fixed together by welding. The angle between the diagonal support plate 1132 and the center backrest plate 1131 is 30 degrees.

[0054] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] In summary, the temporary consolidation device for the circular jacking pipe segment in the embodiment of the present application has at least the following features:

[0056] Beneficial effects:

[0057] 1. This device uses materials commonly used on construction sites and can be adjusted according to the diameter of the prefabricated pipe segment. It has a temporary consolidation effect, eliminating the need for corresponding technical processing during the prefabrication of the culvert and subsequent surface aesthetic treatment of the culvert. It can be directly and repeatedly used, greatly improving the utilization of material resources, reducing steel usage and reducing carbon emissions.

[0058] 2. This device is simple, fast and safe to operate. It can not only temporarily consolidate pipe joints, but also treat pipe joint gaps and concrete damage. During temporary consolidation, it can effectively protect the concrete surface and eliminate the need to first damage the concrete surface and then repair it. When treating cracks and concrete damage, the device can ensure construction quality by injecting working slurry, reducing subsequent maintenance operations and effectively reducing project costs.

[0059] 3. The application and promotion of this device is an effective supplement to the current construction technology of temporary consolidation between pipe sections and later defect repair in pipe jacking construction, and has high social benefits.

[0060] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A temporary consolidation device for a circular jacking pipe segment, characterized in that: include: An outer support sleeve, comprising 3N circular arc steel plates capable of forming a circular ring and bolts for connecting two adjacent circular arc steel plates, where N is a positive integer; a rubber layer is provided on the outer side of the circular arc steel plates, and a connecting seat is fixed on the inner side of the opposite ends of each circular arc steel plate, and the connecting seat is provided with a connecting hole for the bolt to pass through; a mounting seat is fixed to the middle portion of the inner side of each circular arc steel plate, and the mounting seat includes a central backrest plate and diagonal support plates symmetrically fixed on both sides of the central backrest plate, and the diagonal support plates are fixed with positioning protrusions; and Three inner support tubes are located inside the outer support sleeve. The ends of the inner support tubes can be sleeved on the positioning protrusions. The three inner support tubes are connected to the mounting seats in the middle of three of the arc-shaped steel plates to form a triangular top support structure.

2. The temporary consolidation device for circular jacking pipe segments according to claim 1, characterized in that: The center backrest plate is provided with a grouting hole that passes through the arc-shaped steel plate and the rubber layer.

3. The temporary consolidation device for circular jacking pipe segments according to claim 1, characterized in that: The outer support sleeve includes six arc-shaped steel plates.

4. The temporary consolidation device for circular jacking pipe segments according to claim 1, characterized in that: The length of the inner support tube is adjustable.

5. The temporary consolidation device for circular jacking pipe segments according to claim 4, characterized in that: The inner support tube includes two steel tubes and an adjusting sleeve. The inner diameters of the two steel tubes are larger than the outer diameter of the positioning protrusion. The outer walls of the two steel tubes are provided with external threads with opposite rotation directions. The inner walls of the two ends of the adjusting sleeve are provided with internal threads with opposite rotation directions. The two ends of the adjusting sleeve are respectively threadedly connected to the two steel tubes. By rotating the adjusting sleeve, the two steel tubes can move toward or away from each other.

6. The temporary consolidation device for circular jacking pipe segments according to claim 1, characterized in that: The connecting seat includes a connecting plate and a rib plate, the connecting plate is vertically fixed to the inner side of the end of the arc-shaped steel plate, the connecting hole is provided on the connecting plate, and the rib plate is connected between the connecting plate and the arc-shaped steel plate.

7. The temporary consolidation device for circular jacking pipe segments according to claim 1, characterized in that: The mounting seat further includes a reinforcing rib plate arranged between the diagonal support plate and the central backrest plate.

8. The temporary consolidation device for circular jacking pipe segments according to claim 1, characterized in that: The positioning protrusion is spherical or cylindrical.

9. The temporary consolidation device for a circular jacking pipe segment according to claim 1, characterized in that: The angle between the diagonal support plate and the central backrest plate is 30 degrees.

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