Hollow pipe joint structure suitable for bunched pipe roofing method

Abstract

The invention belongs to the technical field of pipe roofing construction, and discloses a hollow pipe joint structure suitable for a bundled pipe roofing method, and the hollow pipe joint structure comprises a monitor which is arranged in a monitoring area and is used for monitoring whether poured concrete is dense or not; the supporting mechanism is fixed in the cavity and used for supporting the hollow pipe; the first end of the connecting pipe extends into and is fixed into the hollow pipe, the second end of the connecting pipe penetrates through the cavity and extends to the monitoring area, and the connecting pipe is used for discharging gas in the monitoring area into the hollow pipe or supplementing slurry to the monitoring area from the hollow pipe. The connecting pipe can be used for uniformly exhausting air in the cavity, so that the formation of air mass is avoided, and the quality of poured concrete is ensured; the concrete liquid level monitor can be used for monitoring the liquid level position of poured concrete, then the liquid level position is observed through the endoscopic camera, and if the problem that pouring is not compact is found, grout can be supplemented into the cavity in time through the connecting pipe, so that the hollow pipe joint structure is compact in pouring and uniform in bearing capacity.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe curtain construction, and particularly relates to a hollow pipe segment structure suitable for a bundled pipe curtain method. Background Art

[0002] With the development of urban economy and the increasing shortage of underground space, traditional excavation technology can no longer meet the needs of modern cities. Under such circumstances, underground trenchless technology has emerged, providing a new, efficient and environmentally friendly option for urban underground infrastructure construction. At present, the commonly used trenchless technologies mainly include shield method, pipe jacking method, mining method and pipe curtain method. Among them, the pipe curtain method has the advantages of ultra-shallow cover, free section, no support, permanent and temporary combination and small footprint, and is suitable for trenchless projects with ultra-shallow cover, large section and narrow construction site. The bundled pipe curtain technology is that after the pipe curtain is pushed in, the prestressed bundle is inserted into the corrugated pipe set in the hole, and the pipe curtain is "stringed" and "pulled". The force form is upgraded from the original longitudinal force and transverse support to transverse prestressed tensioning, and the longitudinal and transverse forces are jointly subjected to the force, and the support is cancelled, thereby forming a stronger bundled pipe curtain overall structure, realizing unreinforced and unsupported dark excavation, improving work efficiency and reducing costs. The pipe curtain in the prior art usually adopts a plurality of steel pipe sections to form a pipe curtain structure. The pipe curtain composed of steel pipe sections needs to be poured with self-compacting concrete in the subsequent steel pipe sections. The pipe curtain of the bundled pipe curtain has the following problems:

[0003] (1) Difficulty in compacting during pouring: The internal structure of the bundled pipe curtain is complex, and the fluidity of the self-leveling concrete is limited. Under long-distance pouring conditions, it is easy for a closed air mass to exist on the top of the pipe curtain, making it difficult to compact.

[0004] (2) Difficulty in checking pouring quality: After pouring concrete into the pipe curtain, it is difficult to check the pouring quality and to add grout;

[0005] (3) There are weak points in bearing capacity: Concrete pouring is difficult to compact, resulting in gaps at the top of the pipe section, and the weak position of the structural bearing capacity is transformed into an uncompacted pipe section;

[0006] Therefore, we propose a hollow pipe segment structure suitable for the bundled pipe curtain method to solve the above problems. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a hollow pipe segment structure suitable for the bundled pipe curtain method, which solves the problems of difficulty in compacting the casting, difficulty in checking the pouring quality and the existence of weak points in bearing capacity.

[0008] The present invention is implemented by the following scheme: a hollow pipe segment structure suitable for the bundled pipe curtain method, comprising:

[0009] tube segment;

[0010] A hollow tube is arranged inside the pipe section and forms a cavity for pouring concrete between the hollow tube and the pipe section, and a monitoring area is formed on the top of the cavity;

[0011] A monitor, arranged in the monitoring area, for monitoring whether the poured concrete is dense;

[0012] A supporting mechanism, fixed in the cavity and used to support the hollow tube; and

[0013] A connecting pipe, the first end of which extends into and is fixed to the hollow pipe, and the first end passes through the cavity and extends to the monitoring area, for discharging the gas in the monitoring area into the hollow pipe or replenishing slurry from the hollow pipe to the monitoring area.

[0014] The further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that the supporting mechanism includes a plurality of groups of stiffening ribs, and the plurality of groups of stiffening ribs are arranged at intervals along the entire length direction of the cavity; the number of stiffening ribs in each group is four, and the four stiffening ribs are respectively obliquely supported at the four corners of the pipe segment.

[0015] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that the support mechanism also includes a plurality of load-bearing plates and a plurality of guide members, and the plurality of load-bearing plates are respectively fixed between the two lowest stiffening ribs of each group of stiffening ribs; and the plurality of guide members are respectively fixed to the top of the plurality of load-bearing plates to form a row of guide members for positioning and guiding the hollow pipe.

[0016] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that the monitor includes a plurality of concrete liquid level monitors fixed on the top wall in the monitoring area, and the plurality of concrete liquid level monitors are arranged at intervals along the length of the monitoring area.

[0017] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that the connecting pipes are provided in a plurality of groups, and the plurality of groups of connecting pipes correspond to a plurality of concrete liquid level monitors respectively.

[0018] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that the number of connecting pipes in each group is three, and the three connecting pipes are equidistantly distributed along a fan shape, and the second ends of the two outermost connecting pipes of the three connecting pipes are partially in contact with the top wall in the monitoring area to prevent the hollow pipe from floating up when pouring concrete.

[0019] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that the monitor also includes a plurality of endoscopic cameras, which are respectively arranged inside a plurality of connecting pipes and extend to the monitoring area.

[0020] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that the outer surface of the connecting pipe is provided with threads, and the upper end of the hollow pipe is penetrated by a screw hole for the connecting pipe to be screwed and connected.

[0021] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that templates for closing the cavity are provided on both sides of the pipe segment, and an injection pipe connected to the monitoring area is provided at the upper end of the template for injecting concrete into the cavity.

[0022] A further improvement of the hollow pipe segment structure applicable to the bundled pipe curtain method of the present invention is that a pair of holes for the corrugated pipe to pass through are respectively provided at the upper part and the lower part of the pipe segment.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention arranges a hollow tube in the middle of the pipe segment. The pipe segment structure adjusts the "full-section filled type" pipe segment to a "hollow type" pipe segment, which can provide an operating space for subsequent inspections and reduce the amount of concrete used. By pouring concrete into the cavity from injection pipes at both ends, two-way pouring can be achieved, and the pouring distance is doubled compared to unidirectional pouring. The arranged connecting pipe can be used for uniform exhaust in the cavity, avoiding the formation of air masses and ensuring the quality of poured concrete. The concrete liquid level monitor can be used to monitor the liquid level position of the poured concrete, and the liquid level position can be observed by the endoscopic camera. If the pouring is still found to be loose, the cavity can be filled with grout in time through the connecting pipe, so that the hollow pipe segment structure is poured densely and the bearing capacity is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the installation position of the concrete liquid level monitor of the present invention is shown.

[0026] Figure 2 A schematic diagram of the installation position of the hollow tube of the present invention is shown.

[0027] Figure 3 A schematic diagram showing the arrangement positions of the connecting pipes of the present invention is shown.

[0028] Figure 4 A schematic diagram of exhaust through a monitoring area according to the present invention is shown.

[0029] Figure 5 A schematic diagram showing the interior of the cavity of the present invention being filled with concrete is shown.

[0030] In the figure: 1. pipe section; 2. hollow pipe; 3. concrete liquid level monitor; 4. connecting pipe; 5. stiffening rib; 6. guide piece; 7. bellows; 8. monitoring area; 9. cavity; 10. load-bearing plate. DETAILED DESCRIPTION

[0031] In order to solve the problems of difficult compaction in pouring, difficulty in pouring quality inspection and weak bearing capacity, the present invention provides a hollow pipe segment structure suitable for the bundled pipe curtain method. The following is a further description of the hollow pipe segment structure suitable for the bundled pipe curtain method with specific embodiments and drawings.

[0032] See also Figure 1 to Figure 5 As shown, a hollow pipe segment structure suitable for the bundled pipe curtain method comprises:

[0033] Tube segment 1;

[0034] The hollow tube 2 is arranged inside the pipe section 1, and a cavity 9 for pouring concrete is formed between the hollow tube 2 and the pipe section 1, and a monitoring area 8 is formed on the top of the cavity 9;

[0035] A monitor, arranged in the monitoring area 8, is used to monitor whether the poured concrete is dense;

[0036] A supporting mechanism, fixed in the cavity 9, for supporting the hollow tube 2; and

[0037] The connecting pipe 4 has a first end which extends into and is fixed to the hollow tube 2, and a second end which passes through the cavity 9 and extends to the monitoring area 8, and is used to discharge the gas in the monitoring area 8 into the hollow tube or to add slurry from the hollow tube to the monitoring area 8.

[0038] Specifically, in this embodiment, the hollow tube 2 is made of steel material, so that the hollow tube 2 has a certain strength, which can ensure that the force-bearing performance of the hollow tube 2 meets the requirements; a slide rail for the movement of a maintenance trolley is provided in the hollow tube 2, and workers use the maintenance trolley to move in the hollow tube 2 to install the connecting tube 4, and perform grouting and other operations through the connecting tube 4.

[0039] Among them, see Figure 1-Figure 3 As shown, the supporting mechanism includes a plurality of groups of stiffening ribs 5 , which are arranged at intervals along the length of the cavity 9 ; each group of stiffening ribs 5 has four stiffening ribs 5 , and the four stiffening ribs 5 are respectively supported obliquely at the four corners of the pipe segment 1 .

[0040] By diagonally bracing the four corners of the pipe segment 1 with stiffening ribs 5, the overall strength of the pipe segment 1 can be reinforced and improved, thereby increasing the bearing capacity.

[0041] Among them, see Figure 1-Figure 3 As shown, the supporting mechanism also includes a plurality of load-bearing plates 10 and a plurality of guide members 6. The plurality of load-bearing plates 10 are respectively fixed between the two lowest stiffening ribs 5 of each group of stiffening ribs 5; and the plurality of guide members 6 are respectively fixed to the top of the plurality of load-bearing plates 10 to form a row of guide members 6 for positioning and guiding the hollow tube 2.

[0042] Specifically, in this embodiment, the guide member 6 is preferably a guide wheel. By hoisting the hollow tube 2 into place and then pushing the hollow tube 2 to move into the cavity 9 by means of the guide wheel, the installation of the hollow tube 2 is facilitated and stable support can be provided for the hollow tube 2 at the same time.

[0043] Among them, see Figure 4 As shown, the monitor includes a plurality of concrete liquid level monitors 3 fixed on the top wall of the monitoring area 8, and the plurality of concrete liquid level monitors 3 are arranged at intervals along the length of the monitoring area 8.

[0044] Specifically, in this embodiment, the concrete liquid level monitor 3 may be a liquid level sensor. By arranging a plurality of liquid level sensors at intervals in the monitoring area 8, the monitoring area 8 can be fully monitored, thereby accurately monitoring the position of the poured concrete liquid level.

[0045] Among them, see Figure 3 As shown, several groups of connecting pipes 4 are provided, and the several groups of connecting pipes 4 correspond to several concrete liquid level monitors 3 respectively.

[0046] The connecting pipe 4 is arranged to correspond to the concrete liquid level monitor 3 , which is conducive to accurate grouting operation through the connecting pipe 4 .

[0047] Among them, see Figure 3 As shown, the number of connecting tubes 4 in each group is three, and the three connecting tubes 4 are equidistantly distributed along the fan shape, and the second ends of the two outermost connecting tubes 4 of the three connecting tubes 4 are partially in contact with the inner top wall of the monitoring area 8 to prevent the hollow tube from floating up when pouring concrete; the non-contact parts of the two outermost connecting tubes 4 and the inner top wall of the monitoring area 8 are used for exhaust and grouting, and a gap is left between the connecting tube 4 in the middle and the inner top wall of the monitoring area 8 for exhaust and grouting.

[0048] By arranging three connecting pipes 4 evenly distributed in the area monitored by the concrete liquid level monitor 3, it is beneficial to perform uniform and accurate grouting operations through the connecting pipes 4 laterally, so that the poured concrete has a better compaction effect; at the same time, the two outermost connecting pipes 4 are abutted against the inner top wall of the pipe section 1 by the edges and corners, thereby being obliquely supported between the hollow pipe 2 and the inner top wall of the monitoring area 8, so as to ensure that when pouring concrete into the cavity 9, an anti-floating effect is achieved.

[0049] The outer surface of the connecting pipe 4 is provided with threads, and the upper end of the hollow tube 2 is penetrated by a screw hole for the connecting pipe 4 to be screwed and connected.

[0050] By providing the connecting pipe 4 to be screwed into the screw hole provided on the hollow pipe 2, the connecting pipe 4 can be fixed, which is convenient for installation and use, and the connection between the two is sealed.

[0051] The monitor further includes a plurality of endoscopic cameras, which are respectively disposed inside the plurality of connecting tubes 4 and extend to the monitoring area 8 .

[0052] The endoscope camera disposed in the connecting pipe 4 can be used to monitor the concrete liquid level in the monitoring area 8, so as to cooperate with the concrete liquid level monitor 3 to perform precise grouting operations. Before grouting, the endoscope camera can be taken out or not.

[0053] Templates for sealing the cavity 9 are provided on both sides of the pipe segment 1 , and an injection pipe connected to the monitoring area 8 is provided at the upper end of the template for injecting concrete into the cavity 9 .

[0054] By pouring concrete into the cavity 9 from the injection pipes at both ends, bidirectional pouring can be achieved, which doubles the pouring distance compared to unidirectional pouring, and is beneficial to the compaction of the concrete of the building.

[0055] The upper and lower parts of the pipe section 1 are each provided with a pair of holes for the corrugated pipe 7 to pass through, and a sealing treatment is performed between the corrugated pipe 7 and the holes.

[0056] By setting the bellows 7 in advance, it is convenient to tension the prestressed tendons later; the bellows 7 set at the same time can be wrapped by the poured concrete, and by sealing between the bellows 7 and the holes, it can prevent leakage when pouring concrete.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A hollow pipe segment structure suitable for the bundled pipe curtain method, characterized in that: include: tube segment; A hollow tube is arranged inside the pipe section and forms a cavity for pouring concrete between the hollow tube and the pipe section, and a monitoring area is formed on the top of the cavity; A monitor, arranged in the monitoring area, for monitoring whether the poured concrete is dense; A supporting mechanism, fixed in the cavity and used to support the hollow tube; as well as A connecting pipe, wherein the first end of the connecting pipe extends into and is fixed to the hollow pipe, and the second end passes through the cavity and extends to the monitoring area, and is used to discharge the gas in the monitoring area into the hollow pipe or to add slurry from the hollow pipe to the monitoring area.

2. The hollow pipe segment structure suitable for the bundled pipe curtain method according to claim 1, characterized in that: The supporting mechanism comprises a plurality of groups of stiffening ribs, and the plurality of groups of stiffening ribs are arranged at intervals along the longitudinal direction of the cavity; the number of stiffening ribs in each group is four, and the four stiffening ribs are respectively and obliquely supported at the four corners of the pipe segment.

3. The hollow pipe segment structure suitable for the bundled pipe curtain method according to claim 2, characterized in that: The support mechanism also includes a plurality of load-bearing plates and a plurality of guide members, wherein the plurality of load-bearing plates are respectively fixed between the two lowest stiffening ribs of each group of stiffening ribs; and the plurality of guide members are respectively fixed to the tops of the plurality of load-bearing plates to form a row of guide members for positioning and guiding the hollow tube.

4. The hollow pipe segment structure suitable for the bundled pipe curtain method according to claim 1, characterized in that: The monitor comprises a plurality of concrete liquid level monitors fixed on the top wall in the monitoring area, and the plurality of concrete liquid level monitors are arranged at intervals along the longitudinal direction of the monitoring area.

5. The hollow pipe segment structure suitable for the bundled pipe curtain method according to claim 4, characterized in that: The connecting pipes are provided in a plurality of groups, and the plurality of connecting pipes respectively correspond to a plurality of concrete liquid level monitors.

6. The hollow pipe segment structure suitable for the bundled pipe curtain method according to claim 5, characterized in that: The number of connecting pipes in each group is three, and the three connecting pipes are evenly distributed along a fan shape; the second ends of the two outermost connecting pipes of the three connecting pipes partially contact the top wall in the monitoring area to prevent the hollow pipe from floating up when pouring concrete.

7. The hollow pipe segment structure suitable for the bundled pipe curtain method according to claim 6, characterized in that: The monitor further comprises a plurality of endoscopic cameras, which are respectively arranged inside a plurality of connecting tubes and extend to the monitoring area.

8. The hollow pipe segment structure applicable to the bundled pipe curtain method according to claim 1, characterized in that: The outer surface of the connecting pipe is provided with threads, and the upper end of the hollow pipe is penetrated by a screw hole for the connecting pipe to be screwed and connected.

9. The hollow pipe segment structure applicable to the bundled pipe curtain method according to claim 1, characterized in that: Templates for closing the cavity are arranged on both sides of the pipe section, and an injection pipe connected to the monitoring area is arranged on the upper end of the template for injecting concrete into the cavity.

10. The hollow pipe segment structure applicable to the bundled pipe curtain method according to claim 1, characterized in that: The upper part and the lower part of the pipe section are each provided with a pair of holes for the corrugated pipe to pass through.

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