CN217736486U - Pipe jacking structure and grouting device - Google Patents

Abstract

The utility model discloses a pipe jacking structure, including the push pipe, still include the slip casting device, the slip casting device is installed the push pipe outside and with the push pipe phase separation sets up, the inside of slip casting device has the edge the push pipe extending direction extends and extends to the slip casting passageway of one end at least, the slip casting passageway is keeping away from one side intercommunication of push pipe has the slip casting hole in order to be used for outside slip casting. Wherein separate setting between slip casting device and the push pipe to make can reduce restraint each other, restraint power requirement each other can be less than the joint strength that integrated into one piece connected and formed, and then when slip casting device broke or received great external force, can not lead to the push pipe to follow and breaks or reduce the cracked risk of push pipe, so can solve the problem that the injected hole of push pipe structure sets up the position not good effectively. The utility model also discloses a be applied to the slip casting device of above-mentioned push pipe structure.

Description

Pipe jacking structure and grouting device

Technical Field

The utility model relates to a technical field is buried underground to the pipeline, and more specifically says, relates to a push pipe structure, still relates to a slip casting device.

Background

The pipe-jacking construction is a pipeline burying construction technology without excavation or with less excavation. Along with the rapid development of cities, more lines need to be added in the cities, and the construction of the pipe jacking engineering is more and more in order to ensure that the construction of the pipe jacking engineering does not influence the surrounding trip.

At present, manual pipe-jacking back-to-back grouting mainly adopts a mode of reserving grouting holes in pipelines and combining horizontal grouting along the pipelines and vertical grouting from the ground or a road surface for grouting, but the two construction methods cannot meet the construction quality requirement. In addition, when the depth is large or the distance is long, vertical and horizontal grouting is adopted, so that the method is obviously uneconomical; the reserved grouting holes in the pipelines have potential quality hazards such as water leakage and the like, and inconvenience is brought to engineering construction and subsequent maintenance.

To sum up, how to effectively solve the problem of poor effect of the setting position of the grouting hole of the pipe jacking structure is a problem which needs to be solved urgently by a person skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a first aim at provides a push pipe structure, and this push pipe structure can solve push pipe structure's grouting hole effectively and set up the problem that the position effect is not good, the utility model discloses a second aim at provides a be applied to above-mentioned grouting device of push pipe structure.

In order to achieve the first object, the present invention provides the following technical solutions:

the utility model provides a push pipe structure, includes the push pipe, still includes the slip casting device, the slip casting device install the push pipe outside and with the push pipe phase separation sets up, the inside of slip casting device has the edge the push pipe extending direction extends and extends to the slip casting passageway of one end at least, the slip casting passageway is keeping away from one side intercommunication of push pipe has the slip casting hole in order to be used for outside slip casting.

In the pipe jacking structure, when the pipe jacking structure is used, the grouting device enters along with the pipe jacking until the pipe jacking and the following grouting device enter the corresponding positions. And then grouting material is led in through an opening at one end of the grouting channel, enters the grouting channel, flows along the grouting channel and then flows out of the grouting hole to complete grouting. The grouting device and the jacking pipe are separately arranged, so that the restraint between the grouting device and the jacking pipe can be reduced, and the installation between the grouting device and the jacking pipe only needs to have certain adhesive force between the grouting device and the jacking pipe in the axial direction, so that the requirement on the restraint force between the grouting device and the jacking pipe is far lower than the connection strength formed by integrally-formed connection, and further, when the grouting device is broken or is subjected to a large external force, the jacking pipe cannot be broken along with the grouting device or the risk of breakage of the jacking pipe is reduced. In conclusion, the pipe jacking structure can effectively solve the problem that the setting position of the grouting hole of the pipe jacking structure is not good.

Preferably, the grouting device is a cylindrical member and is sleeved on the top pipe, and the grouting device is provided with a plurality of grouting channels arranged around the top pipe.

Preferably, the inner side wall of the grouting device is attached to the outer side wall of the top pipe and is in tension connection or bonded with the outer side wall of the top pipe.

Preferably, the grouting device comprises an insertion pipe and a plurality of grouting pipe sections sequentially connected along the extension direction of the top pipe, and two ends of the insertion pipe are respectively inserted into the grouting channels of the adjacent grouting pipe sections.

Preferably, the end part of the grouting channel is provided with a hole expanding end to match with the outer wall of the insertion pipe, and the inner wall of the insertion pipe is coaxial with the middle part of the grouting channel and is arranged in an equal diameter mode; the jacking pipe comprises jacking pipe joints which are sequentially connected along the extending direction, and the jacking pipe joints and the grouting pipe joints are arranged in equal length and are installed in a one-to-one correspondence mode.

Preferably, the grouting device further comprises a plugging piece, wherein the plugging piece comprises an annular base and a plurality of cylindrical plugs arranged on the annular base, the plugging piece is arranged at the end part of the grouting device, and the cylindrical plugs on the plugging piece are respectively inserted into the grouting channels at the end part of the grouting device.

Preferably, the diameter of the middle part of the grouting channel is between 4.5 cm and 5.5 cm; the grouting holes extend radially and have the diameter of 2.5-3.5 cm.

Preferably, the toughness of the grouting device is higher than that of the jacking pipe.

Preferably, the grouting device is a rubber piece or a glass fiber reinforced plastic piece.

In order to achieve the second purpose, the utility model also provides a grouting device, this grouting device is for being applied to the concrete structure of above-mentioned push pipe structure. Due to the technical effect of the pipe jacking structure, the grouting device also has the corresponding technical effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a pipe jacking structure provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a side view structure of a pipe jacking structure provided in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a cross-sectional structure of a pipe jacking structure at a grouting hole provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an insertion tube according to an embodiment of the present invention;

fig. 5 is an axial structural schematic view of a plugging member according to an embodiment of the present invention;

fig. 6 is a schematic view of a radial structure of the plugging member according to an embodiment of the present invention.

The drawings are numbered as follows:

the device comprises a top pipe 1, a grouting device 2, a grouting channel 3, a grouting hole 4, a reaming end 5, an insertion pipe 6, an annular base 7 and a cylindrical plug 8.

Detailed Description

The embodiment of the utility model discloses pipe jacking structure, this pipe jacking structure can solve the problem that the injected hole setting position effect of pipe jacking structure is not good effectively.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-6, fig. 1 is a schematic cross-sectional view of a pipe jacking structure according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a side view structure of a pipe jacking structure provided in an embodiment of the present invention; FIG. 3 is a schematic view of a cross-sectional structure of a pipe jacking structure at a grouting hole provided by an embodiment of the present invention; fig. 4 is a schematic structural diagram of an insertion tube according to an embodiment of the present invention; fig. 5 is an axial structural schematic view of a plugging member according to an embodiment of the present invention; fig. 6 is a schematic view of a radial structure of a plugging member according to an embodiment of the present invention.

In a specific embodiment, the embodiment provides a pipe jacking structure, which is applied to pipe jacking engineering and comprises a general pipe jacking 1 and a grouting device 2 installed outside the pipe jacking 1.

Wherein slip casting device 2 is installed in the push pipe 1 outside, make slip casting device 2 can keep advancing in step with push pipe 1, between the two if welding, bonding, joint, tight connection etc.. Note that, the outside of the top pipe 1 refers to the side away from the channel of the top pipe 1.

And the grouting device 2 and the top pipe 1 are arranged separately, i.e. the grouting device and the top pipe are not of an integrally formed structure, and an obvious separation boundary line is required to be arranged between the grouting device and the top pipe. The grouting device 2 and the jacking pipe 1 can be made of the same material, so that a direct contact surface between the grouting device 2 and the jacking pipe 1 or an indirect contact surface connected through an adhesive, a welding agent and the like can be judged to be arranged separately. Of course, different material structures may be adopted. The purpose of the separation is to reduce the constraint between the top pipes, and as mentioned above, the installation modes only need to form a connection relationship, and only need to have a certain adhesion force between the top pipes in the axial direction, so the constraint force between the top pipes is required to be lower than the connection strength formed by the integrally-formed connection, and further, when the grouting device 2 is broken or receives a large external force, the top pipe 1 is not caused to follow the breakage or the risk of breakage of the top pipe 1 is reduced.

Correspondingly, the grouting device 2 has a grouting channel 3 inside, and may have one or more grouting channels 3, and the grouting channel 3 therein extends along the extension direction of the top pipe 1, so as to guide the flow of grouting in the extension direction of the top pipe 1. And preferably the inner grouting channel 3 of the grouting device 2 extends at least to one end of the grouting device 2 to form an opening through which grouting material can be introduced into the grouting channel 3, where preferably both ends of the inner grouting channel 3 of the grouting device 2 extend to both ends of the grouting device 2 to form openings at both ends of the grouting device 2.

And the grouting channel 3 is communicated with a grouting hole 4 at one side far away from the top pipe 1 for outward grouting, and is generally provided with one or more grouting holes 4. Wherein the grouting material in the grouting channel 3 is guided to the outside through the grouting holes 4, and the side away from the top pipe 1 is guided to the earthwork where the top pipe 1 is located, so that the transverse grouting of the top pipe 1 is completed, and the effect of reinforcing the outside of the top pipe 1 is achieved.

In the pipe jacking structure, when in use, the grouting device 2 enters along with the pipe jacking 1 until the pipe jacking 1 and the following grouting device 2 enter the corresponding positions. Then, grouting material is led in through an opening at one end of the grouting channel 3, enters the grouting channel 3, flows along the grouting channel 3, and then flows out from the grouting hole 4 to complete grouting. The grouting device 2 and the top pipe 1 are arranged separately, so that the restraint between the grouting device and the top pipe 1 can be reduced, and the installation between the grouting device and the top pipe only needs to have certain adhesive force between the grouting device and the top pipe in the axial direction, so that the restraint force between the grouting device and the top pipe is lower than the connection strength formed by integrally molded connection, and further, when the grouting device 2 is broken or receives large external force, the top pipe 1 cannot be broken or the risk of breakage of the top pipe 1 is reduced. In conclusion, the pipe jacking structure can effectively solve the problem that the arrangement position of the grouting holes 4 of the pipe jacking structure is not good.

Furthermore, the grouting device 2 can be a cylindrical member, and the top pipe 1 is sleeved with the grouting device and is attached to each other. Of course, the grouting device 2 may also be a long piece, for example, a plurality of long grouting devices 2 are uniformly arranged along the outer circumference of the top pipe 1.

Preferably, the grouting device 2 is here a cylindrical piece, and the grouting device 2 is provided with a plurality of said grouting channels 3 arranged around said top pipe 1.

Further, in order to facilitate the installation between the grouting device 2 and the top pipe 1, it is preferable that an inner sidewall of the grouting device 2 and an outer sidewall of the top pipe 1 are disposed in an abutting manner and are connected or bonded in a tensioning manner, so that when the top pipe 1 is pushed to the corresponding ground, the top pipe 1 can form a thrust force on the grouting device 2 installed thereon, and the thrust force of the grouting device 2 may also be from a force applied to an end portion of the grouting device 2.

Furthermore, for convenience of being applicable to different length push pipe projects, the preferable grouting device 2 comprises an insertion pipe 6 and a plurality of grouting pipe sections which are sequentially connected along the extending direction of the push pipe 1, and two ends of the insertion pipe 6 are respectively inserted into the grouting channels 3 of the adjacent grouting pipe sections, so that the grouting channels 3 of the adjacent grouting pipe sections are communicated. When the grouting device is used, the corresponding number of grouting pipe sections can be selected according to the length of the grouting device 2 as required.

Further, for making slip casting passageway 3 in the slip casting slurry flow more smoothly, the tip of the slip casting passageway 3 of this preferred slip casting has reaming end 5 with 6 outer walls of cooperation intubate to further make 6 inner walls of intubate and slip casting passageway 3 the middle part coaxial and isometric setting, and then make the slip casting passageway 3 of slip casting tube coupling middle part and the effect that reaches smooth joining between 6 insides of intubate.

Further, generally speaking, the jacking pipe 1 also includes jacking pipe joints connected in sequence along the extension, and based on this, the jacking pipe joints and the grouting pipe joints can be arranged in equal length and in one-to-one correspondence, and when assembling, each jacking pipe joint and the corresponding grouting pipe joint can be aligned and arranged, or can be staggered.

Further, for better pipe jacking operations, as well as grouting. Here, it is preferable to further include a blocking member to block the grouting passage 3. Further, in order to facilitate rapid plugging operation, it is preferable that the plugging member includes an annular base 7 and a plurality of cylindrical plugs 8 provided on the annular base 7, wherein the plugging member is provided at an end of the grouting device 2, and the cylindrical plugs 8 of the plugging member are respectively inserted into the grouting passages 3 at the end of the grouting device 2 to plug the ends of the grouting passages 3. Specifically, when there are a plurality of grouting pipe sections, the outer ends of the grouting pipe sections at both ends may be provided with the plugging pieces. Wherein the structure of cylindricality end cap 8 can correspond the setting according to slip casting passageway 3, if can be with reaming end 5 cooperatees.

Further, in order to ensure the grouting effect, the diameter of the middle part of the grouting channel 3 can be generally between 4.5 cm and 5.5 cm, specifically 5 cm; the grouting holes 4 extend radially and have a diameter of 2.5 cm to 3.5 cm, such as 3 cm.

Further, in order to perform grouting better and avoid breakage of the grouting device 2 during grouting, the toughness of the grouting device 2 is preferably higher than that of the top pipe 1. Specifically, the grouting device 2 may be a rubber member or a glass fiber reinforced plastic member.

Based on the push pipe structure that provides in the above-mentioned embodiment, the utility model also provides a slip casting device 2, this slip casting device 2 can be the slip casting device 2 in any embodiment of the aforesaid to be applied to above-mentioned push pipe structure.

The grouting device 2 can comprise a pipe body, the pipe body is sleeved on the top pipe 1 and is in clearance fit or interference fit, a grouting channel 3 extending along the axial direction and a grouting hole 4 extending in the radial direction and communicated with the grouting channel 3 are arranged on the pipe wall of the pipe body, and the grouting device 2 is a rubber piece or a glass fiber reinforced plastic piece. Of course, the grouting device 2 may also be a concrete pipe structure, a plastic steel pipe structure, a polyvinyl chloride pipe structure, or the like.

In some embodiments, a pipe jacking structure is provided, which includes a pipe jacking 1 and a grouting device 2 sleeved outside the pipe jacking 1, wherein the grouting device 2 includes: the grouting pipe joint is provided with a plurality of grouting channels 3 and grouting holes 4 in any one of the embodiments, the grouting channels 3 are uniformly arranged along the circumferential direction of the grouting device 2, for example, 6-10 grouting channels 3 are uniformly arranged, preferably, 8 grouting channels 3 are arranged, and the included angle between every two adjacent grouting channels 3 is 45 degrees. The multiple sections of grouting pipe joints are arranged along the jacking direction, adjacent grouting pipe joints are connected through the insertion pipes 6, and smooth sections and unchanged areas of the connecting parts are guaranteed. Wherein the grouting pipe joint is equal to the top pipe joint of the top pipe 1.

The length of the grouting pipe joint can be about 2 meters, the diameter of the outer pipe can be about 2 meters, two grouting holes 4 of the single grouting channel 3 of the grouting pipe joint are respectively about 0.5 meter away from the corresponding end part of the grouting pipe joint, the distance between the two grouting holes 4 is about 1 meter, and the grouting holes 4 are arranged perpendicular to the top pipe 1.

During construction, after all pipe joints in a construction section are completely jacked and accepted, grouting is started, the grouting is completed in two times, cement mortar is adopted for the first grouting, and all grouting channels 3 at the other end overflow the mortar with the same proportion, so that the grouting can be finished; and the second grouting can be carried out 24 hours after the first grouting is finished, the mortar is solidified and generates shrinkage cracks, cement-coal-ash mortar is adopted for filling and compacting, and when all grouting channels 3 at the other end overflow slurry with the same proportion or the grouting pressure reaches 0.5MPa, the grouting can be finished. Grouting is finished for the second time, the end part of the grouting channel is blocked by the blocking piece, the blocking piece adopts an integral flexible blocking device, and the blocking requirements are met, such as the blocking piece is a rubber piece.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a push pipe structure, includes the push pipe, its characterized in that still includes the slip casting device, the slip casting device is installed the push pipe outside and with the push pipe phase separation sets up, the inside of slip casting device has the edge the push pipe extending direction extends and extends to the slip casting passageway of one end at least, the slip casting passageway is keeping away from one side intercommunication of push pipe has the slip casting hole in order to be used for outside slip casting.

2. The pipe jacking structure of claim 1, wherein the grouting device is a cylindrical member and is sleeved on the pipe jacking device, and the grouting device is provided with a plurality of grouting channels arranged around the pipe jacking device.

3. The pipe jacking structure of claim 2, wherein the inner side wall of the grouting device is attached to and tightly connected or bonded with the outer side wall of the pipe jacking.

4. The pipe jacking structure of claim 3, wherein the grouting device comprises an insertion pipe and a plurality of grouting pipe sections sequentially connected along the extension direction of the pipe jacking, and two ends of the insertion pipe are respectively inserted into the grouting channels of the adjacent grouting pipe sections.

5. A pipe jacking structure as claimed in claim 4, wherein the end of said grouting channel has a flared end to fit the outer wall of said insertion pipe, said inner wall of said insertion pipe being coaxial and of equal diameter to the middle of said grouting channel; the jacking pipe comprises jacking pipe joints which are sequentially connected along the extending direction, and the jacking pipe joints and the grouting pipe joints are arranged in equal length and are installed in a one-to-one correspondence mode.

6. A push pipe structure as claimed in any one of claims 2 to 5 further comprising a blocking member, said blocking member comprising an annular base and a plurality of cylindrical plugs disposed on said annular base, said blocking member being disposed at the end of said grouting device, and each of said cylindrical plugs on said blocking member being inserted into each of said grouting channels at the end of said grouting device.

7. The push pipe structure of claim 6, wherein the diameter of the middle portion of said grouting channel is between 4.5 cm and 5.5 cm; the grouting holes extend radially and have the hole diameter of 2.5-3.5 cm.

8. The jacking pipe structure of claim 7, wherein the grouting device has a higher toughness than the jacking pipe.

9. The push bench structure as claimed in claim 8, wherein the grouting device is rubber or glass fiber reinforced plastic.

10. The utility model provides a grouting device, its characterized in that includes the body, the pipe wall of body be provided with along axially extended slip casting passageway and radial extension and communicate in the slip casting hole of slip casting passageway, grouting device is rubber spare or glass steel spare.

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