Pipe joint suitable for mechanical connection channel

Abstract

A pipe joint suitable for a mechanical method connection channel comprises an annular main rib, stirrups and drag hooks, the annular main rib is provided with an inner layer and an outer layer, the stirrups are wound around the inner layer and the outer layer of the annular main rib, the stirrups are annularly arranged at intervals, and the two ends of the drag hooks are connected to the upper sides and the lower sides of the stirrups in a hooked mode. An annular steel bar body is formed among the annular main bars, the stirrups and the drag hooks, and concrete is poured on the steel bar body to form an integrated whole-ring pipe joint. According to the utility model, the steel bar main body is formed through the arrangement of the circumferential main bars, the stirrups and the drag hooks, the whole-ring pipe joint is formed by pouring concrete through the steel bar main body, the whole-ring pipe joint is integrally formed and does not need to be spliced by blocks, so that the construction efficiency of the pipe joint is effectively improved, and meanwhile, as the whole-ring pipe joint adopts an integrated structure, no abutted seam exists in the whole-ring pipe joint, and the construction cost is reduced. Therefore, water seepage of abutted seams is effectively avoided, and the waterproof performance of the pipe joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a pipe segment suitable for mechanically connecting passages. Background Art

[0002] The connecting channel is an important supporting project in the shield tunnel section, and the pipe segment is the innermost barrier of the connecting channel, which is responsible for resisting the formation pressure, groundwater pressure and some special loads. It is also the permanent lining structure of the connecting channel. The quality of the pipe segment itself and the quality of the pipe segment assembly directly affect the overall quality and safety of the connecting channel, and affect the waterproofness and durability of the connecting channel.

[0003] Most of the current pipe sections are assembled in blocks. During the construction process, multiple pipe sections need to be transported to the construction site and then assembled into rings. This method is time-consuming and labor-intensive. In addition, there are joints between adjacent block pipe sections in each ring, which poses a risk of water seepage. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a pipe segment suitable for mechanical communication channels. The pipe segment adopts a whole-ring pipe segment structure and does not need to be assembled, which can improve construction efficiency and prevent water seepage in the joints.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a pipe segment suitable for a mechanical communication channel is provided, which is characterized in that it includes annular main bars, stirrups and hooks, the annular main bars are provided with an inner and outer double layer, the stirrups are arranged around the inner and outer double layers of the annular main bars, and the multiple stirrups are arranged annularly at intervals, the two ends of the hooks are hooked on the upper and lower sides of the stirrups, a ring-shaped steel bar body is formed between the annular main bars, stirrups and hooks, and concrete is poured on the steel bar body to form an integrated whole-ring pipe segment.

[0006] As a further improvement of the present invention, the plurality of stirrups are arranged at intervals of 6° in the circumferential direction.

[0007] As a further improvement of the present invention, each stirrup is longitudinally hooked with at least two draw hooks.

[0008] As a further improvement of the present invention, a hoisting hole is provided on the outer side wall of the full-ring pipe segment.

[0009] As a further improvement of the present invention, a threaded bolt sleeve is provided on the lifting hole, an anchor bar is embedded in the entire pipe segment, and the anchor bar is welded to the bolt sleeve.

[0010] As a further improvement of the present invention, a back-stop hole is further provided on the full-ring pipe segment.

[0011] As a further improvement of the present invention, a steel casing is provided on the anti-retraction hole, a stiffening steel plate is embedded in the whole ring pipe segment, and the stiffening steel plate is welded to the steel casing.

[0012] As a further improvement of the present invention, it further comprises a rear sealing steel plate, which is welded on the steel casing and flush with the outer side wall of the entire pipe ring, and mortar is filled between the rear sealing steel plate and the steel casing.

[0013] As a further improvement of the present invention, grouting holes are further provided on the whole-ring pipe segment, and the grouting holes are provided through the inside and outside of the whole-ring pipe segment.

[0014] The beneficial effects of the present invention are as follows: in the present invention, a steel bar body is formed by arranging annular main bars, stirrups and hooks, and concrete is poured using the steel bar body to form a whole-ring pipe segment. The whole-ring pipe segment is formed as one piece and does not need to be assembled in blocks, thereby effectively improving the construction efficiency of the pipe segment. At the same time, since the whole-ring pipe segment adopts an integrated structure, there are no joints in the whole-ring pipe segment, thereby effectively avoiding water seepage in the joints and improving the waterproof performance of the pipe segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the whole ring pipe segment;

[0016] Figure 2 Schematic diagram of the lifting hole structure;

[0017] Figure 3 This is a schematic diagram of the structure in which the anti-retraction hole is not blocked;

[0018] Figure 4 This is a schematic diagram of the structure after the anti-retraction hole is blocked;

[0019] Marking instructions: circumferential main reinforcement 1, stirrups 2, hooks 3, whole ring pipe segments 4, lifting holes 5, bolt sleeves 51, anchor bars 52, anti-retraction holes 6, steel casing 61, stiffening steel plates 62, rear sealing steel plates 63, mortar 64, grouting holes 7. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, a pipe segment suitable for mechanical communication channels includes an annular main reinforcement 1, stirrups 2 and hooks 3. The annular main reinforcement 1 is provided with an inner and outer double layer. The stirrups 2 are arranged around the inner and outer double layers of the annular main reinforcement 1, and the multiple stirrups 2 are arranged at an interval of 6° in the annular direction. The two ends of the hook 3 are hooked on the upper and lower sides of the stirrup 2, and four hooks 3 are longitudinally hooked on each stirrup 2. An annular steel bar body is formed between the annular main reinforcement 1, the stirrups 2 and the hooks 3, and concrete is poured on the steel bar body to form an integrated whole-ring pipe segment 4. In other embodiments, the number of hooks 3 on each stirrup 2 is set to at least two.

[0021] The above structure forms an integrated whole-ring pipe segment 4, which does not need to be assembled in pieces, thereby effectively improving the construction efficiency of the pipe segment. In addition, there are no joints in the whole-ring pipe segment 4, thereby effectively avoiding water seepage at the joints and improving the waterproof performance of the pipe segment.

[0022] like Figure 2 As shown, a plurality of hoisting holes 5 are circumferentially spaced on the outer wall of the full-ring pipe segment 4. The hoisting holes 5 primarily provide corresponding lifting points for transporting and hoisting the pipe segment during construction. During use, a pin is connected to the hoisting hole 5 and connected to the pin and sling via a hoisting device, thereby achieving the pipe segment hoisting function. Threaded bolt sleeves 51 are provided in the hoisting holes 5. Anchor bars 52 are embedded at the location of each hoisting hole 5 in the full-ring pipe segment 4. The anchor bars 52 are welded to the bolt sleeves 51. The bolt sleeves 51 and anchor bars 52 enhance the structural strength of the hoisting holes 5.

[0023] like Figure 3 、 4 As shown, the entire pipe segment 4 is also provided with a backstop hole 6. The backstop hole 6 is used in conjunction with the backstop device at the hole entrance. During the pipe segment construction process, the pipe segment may back off after losing the thrust of the jack. Therefore, the backstop hole 6 is provided on the pipe segment, and the backstop device is inserted into the backstop hole 6 to prevent the pipe segment from backing off. The backstop hole 6 is provided with a steel casing 61. The entire pipe segment 4 has a reinforcing steel plate 62 embedded at the location of each backstop hole 6. The reinforcing steel plate 62 is welded to the steel casing 61. The arrangement of the steel casing 61 and the reinforcing steel plate 62 enhances the structural strength of the backstop hole 6. When the anti-retreat hole 6 is not needed, it is necessary to seal the anti-retreat hole 6 to ensure the structural strength and service life of the formed pipe segment 4. The rear sealing steel plate 63 is welded to the steel casing 61 and the rear sealing steel plate 63 is flush with the outer wall of the entire ring pipe segment 4. At the same time, mortar 64 is filled between the rear sealing steel plate 63 and the steel casing 61.

[0024] Multiple grouting holes 7 are arranged at circumferential intervals throughout the entire ring of pipe segments 4, extending both inside and outside. The primary function of these holes is to reduce resistance during pipe jacking by injecting thick slurry into the back of the segment. Once all the segments are jacked and connected, cement slurry or a dual-liquid slurry consisting of cement slurry and water glass is injected through the grouting holes 7 to consolidate and position the segment.

[0025] The above embodiments are only used to illustrate the present invention. Any person with ordinary knowledge in the technical field can make equivalent embodiments by making partial changes or modifications to the technical content disclosed in the present invention without departing from the scope of the technical features of the present invention, and the equivalent embodiments still fall within the scope of the technical features of the present invention without departing from the technical features of the present invention.

Claims

1. A pipe joint suitable for mechanical communication channels, characterized by: It includes circumferential main reinforcement, stirrups and hooks. The circumferential main reinforcement is provided with an inner and outer double layer. The stirrups are arranged around the inner and outer double layers of circumferential main reinforcement, and multiple stirrups are arranged circumferentially at intervals. The two ends of the hooks are hooked on the upper and lower sides of the stirrups. A ring-shaped steel bar body is formed between the circumferential main reinforcement, stirrups and hooks. Concrete is poured on the steel bar body to form an integrated whole-ring pipe section.

2. A pipe joint suitable for mechanical communication channels according to claim 1, characterized in that: Multiple stirrups are arranged at intervals of 6° in the circumferential direction.

3. The pipe joint suitable for mechanical communication channel according to claim 1, characterized in that: Each stirrup is longitudinally hooked with at least two draw hooks.

4. The pipe joint suitable for mechanical communication channel according to claim 1, characterized in that: A hoisting hole is provided on the outer side wall of the full-ring pipe segment.

5. The pipe joint suitable for mechanical communication channel according to claim 4, characterized in that: A threaded bolt sleeve is provided on the hoisting hole, an anchor bar is embedded in the entire pipe segment, and the anchor bar is welded to the bolt sleeve.

6. The pipe joint suitable for mechanical communication channel according to claim 1, characterized in that: The whole ring pipe section is also provided with a stop hole.

7. The pipe joint suitable for mechanical communication channel according to claim 6, characterized in that: A steel casing is provided on the anti-retraction hole, a stiffening steel plate is embedded in the whole ring pipe segment, and the stiffening steel plate is welded to the steel casing.

8. The pipe joint suitable for mechanical communication channel according to claim 7, characterized in that: It also includes a rear sealing steel plate, which is welded to the steel casing and flush with the outer side wall of the entire pipe ring. Mortar is filled between the rear sealing steel plate and the steel casing.

9. The pipe joint suitable for mechanical communication channel according to claim 1, characterized in that: The whole ring pipe section is also provided with grouting holes, and the grouting holes are arranged through the inside and outside of the whole ring pipe section.

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