CN220395705U - Arrangement structure of pipe-jacking starting well - Google Patents
Arrangement structure of pipe-jacking starting well Download PDFInfo
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- CN220395705U CN220395705U CN202322001294.7U CN202322001294U CN220395705U CN 220395705 U CN220395705 U CN 220395705U CN 202322001294 U CN202322001294 U CN 202322001294U CN 220395705 U CN220395705 U CN 220395705U
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- foundation pit
- well
- pipe
- guide rails
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- 239000004567 concrete Substances 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 230000000977 initiatory effect Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 241001669679 Eleotris Species 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 12
- 238000009412 basement excavation Methods 0.000 description 3
- XEEYBQQBJWHFJM-OUBTZVSYSA-N iron-52 Chemical compound [57Fe] XEEYBQQBJWHFJM-OUBTZVSYSA-N 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model discloses an arrangement structure of a pipe jacking starting well, which comprises a foundation pit bottom plate, a pair of foundation pit guide rails, a rigid back rest, main pushing equipment, a pipe jacking machine support and a pipe jacking machine, wherein the foundation pit bottom plate is arranged in a round starting well. The foundation pit bottom plate is poured at the bottom of the originating well by adopting concrete; a pair of foundation pit guide rails are paved on the foundation pit bottom plate in the same direction as the top pipe; the rigid back rest is arranged on the inner side of the pushing side wall of the originating well; the main pushing equipment comprises four jacks, wherein the four jacks are respectively arranged on the inner end face of the rigid back rest through a jack bracket, and the ends of telescopic rods of the four jacks are propped against the rear end face of a pressure-bearing backing plate; the pipe jacking machine support is bridged between the front parts of the pair of foundation pit guide rails; the push bench is arranged on a push bench support, the rear end of the push bench is connected with a pipe section to be jacked, and the rear end face of the pipe section to be jacked is propped against the front end face of the pressure-bearing backing plate through a jacking iron. The utility model has simple structure, reasonable arrangement and convenient construction.
Description
Technical Field
The utility model relates to an arrangement structure of a pipe-jacking working well.
Background
The pipe jacking method construction is a non-excavation construction process developed after the shield method construction. The pipe jacking construction is to overcome the friction force between a pipeline and surrounding soil by means of pushing equipment in an originating well, push reinforced concrete pipe joints or pipe joints made of other materials into the ground along a designed angle and gradient, convey away redundant earthwork, and has small influence on resident living environment by using pipe jacking construction, so that the damage to traffic pressure and ground in densely populated areas can be reduced, the influence of climate and ground environment is avoided, the pipe jacking construction can be paved under deep ground or underwater, and the dismantling cost is saved. When the jacking pipe is in construction, main jacking equipment in jacking equipment is arranged in an originating well and is attached to a pushing wall in the originating well. The distance between the pushing wall in the originating well and the excavation wall is matched with the stroke of a main top oil cylinder of main pushing equipment in the pipe jacking equipment, namely, the main pushing equipment pushes the tunneling machine and a pipe section between the main pushing equipment and the tunneling machine can break the excavation wall, so that the main top equipment in the originating well needs to be reasonably arranged to ensure that pipe jacking construction is normally carried out.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide an arrangement structure of a pipe jacking starting well, which has the advantages of simple structure, reasonable arrangement and convenient construction, and can prevent the phenomenon of 'knocking head' caused by downward walking of a pipe jacking machine in a pipe jacking hole-out stage.
The purpose of the utility model is realized in the following way: an arrangement structure of a pipe jacking starting well comprises a foundation pit bottom plate, a pair of foundation pit guide rails, a rigid back rest, main pushing equipment, a pipe jacking machine support and a pipe jacking machine, wherein the foundation pit bottom plate is arranged in a round starting well; wherein,
the foundation pit bottom plate is poured at the bottom of the originating well by adopting concrete;
the pair of foundation pit guide rails and the jacking pipe are paved on the foundation pit bottom plate in the same direction, and the rear ends of the pair of foundation pit guide rails are connected with embedded parts positioned in the pushing side walls of the originating well;
the rigid back rest is a circular arc-shaped steel plate matched with the wall of the starting well, the rigid back rest is arranged on the inner side of the pushing side wall of the starting well, and the rigid back rest and the pushing wall are filled with cast-in-situ C20 concrete;
the main pushing equipment comprises four jacks which are equally divided into two rows and symmetrically arranged on two sides of the axis of the pipeline, two jacks of each row of jacks are arranged one by one, the four jacks are respectively arranged on the inner end face of the rigid back rest through a jack bracket, and the ends of telescopic rods of the four jacks are propped against the rear end face of a pressure-bearing backing plate;
the pipe jacking machine support is bridged between the front parts of the pair of foundation pit guide rails;
the push bench is arranged on the push bench support, the rear end of the push bench is connected with a pipe section to be jacked, and the rear end face of the pipe section to be jacked is propped against the front end face of the pressure-bearing backing plate through a jacking iron.
According to the arrangement structure of the pipe jacking starting well, the steel sleeper plates are arranged at the bottoms of the pair of foundation pit guide rails.
The arrangement structure of the pipe-jacking starting well comprises two safety escape platforms, wherein the two safety escape platforms are arranged on the same side of the pipe-jacking starting well; the two safety backoff platforms are fixed in the originating well and are not less than 2m away from the bottom of the originating well, and each safety backoff platform is positioned between the upper part of a pair of foundation pit guide rails and the inner wall surface of the originating well to form an arch shape; each safety backoff platform comprises a platform bracket and a grid paved on the platform bracket.
The arrangement structure of the pipe-jacking starting well, wherein the arrangement structure further comprises a well Zhou Langan and a safety net; the well Zhou Langan is arranged on the ground at the top of the initiating well, and an anti-object falling baffle is arranged between the lower part of the well Zhou Langan and the ground; the safety net is disposed on top of the originating well.
The arrangement structure of the pipe jacking starting well has the following characteristics: the pipe jacking machine has the advantages of simple structure, reasonable arrangement and convenient construction, can prevent the phenomenon of 'knocking head' caused by downward running of the pipe jacking machine at the stage of pipe jacking and hole outlet, ensures accurate positioning and safe translation of pipe joints, and can smoothly carry out pipe jacking construction.
Drawings
FIG. 1 is a plan view of the arrangement of a pipe jacking initiation well of the present utility model;
fig. 2 is an axial cross-sectional view of the arrangement of the push pipe initiation well of the present utility model.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, the arrangement structure of the pipe jacking initiation well of the present utility model includes a foundation pit bottom plate 1 provided in a circular initiation well 100, a pair of foundation pit guide rails 2, a rigid back rest 3, a main pushing device 400, a pipe jacking support 60, a pipe jacking machine 6, two safety retreat platforms 7, wells Zhou Langan and a safety net 9.
The foundation pit floor 1 is poured at the bottom of the originating well 100 with concrete.
The pair of foundation pit guide rails 2 are paved on the foundation pit bottom plate 1 in the same direction as the top pipe, the rear ends of the pair of foundation pit guide rails 2 are connected with embedded parts positioned in the pushing side walls of the starting well 100, the foundation pit guide rails 2 are reinforced, and two steel sleeper plates 20 are further arranged at the bottoms of the pair of foundation pit guide rails 2.
The back of the jacking pipe needs to bear and transmit the whole jacking force and has enough strength and rigidity, a rigid back rest 3 is arranged in front of the concrete back rest for ensuring the safety of the back rest, the rigid back rest 3 is a circular arc steel plate matched with the wall of the initiating well 100, the rigid back rest 3 is formed by bending a rectangular steel plate with the height multiplied by the width multiplied by the thickness of 2.2 multiplied by 3 multiplied by 0.24m, the rigid back rest 3 is arranged on the inner side of the pushing side wall of the initiating well 100, and the rigid back rest and the pushing wall are filled by cast-in-situ C20 concrete.
The main pushing device 400 comprises four jacks 4, wherein the four jacks 4 are uniformly divided into two rows and symmetrically arranged at two sides of the axis of the pipeline, and the two jacks 4 of each row of jacks are arranged one above the other; four jacks 4 are respectively arranged on the inner end face of the rigid back rest 3 through a jack bracket 40, and the ends of telescopic rods of the four jacks 4 are propped against the rear end face of a pressure-bearing backing plate 51.
The pipe jacking machine support 60 is bridged between the front parts of the pair of foundation pit guide rails 2; the push bench support 60 is symmetrical to the vertical line of the center of the pipe.
The push bench 6 is mounted on a push bench support 60, the rear end of the push bench 6 is connected with a pipe section to be pushed, and the rear end face of the pipe section to be pushed is propped against the front end face of the pressure-bearing backing plate 51 through a jacking iron 52.
The two safety escape platforms 7 are used for avoiding the constructors during pipe jacking operation; two safety back-off platforms 7 are fixed in the originating well 100 and are at a position which is not less than 2m away from the bottom of the originating well, and the two safety back-off platforms 7 are respectively positioned above a pair of foundation pit guide rails 2 and between the inner wall surfaces of the originating well 100 to be arched; each safety backoff stage 7 includes a stage support 71 and a grille 72 laid on the stage support 71.
The well Zhou Langan is provided on the ground at the top of the originating well 100, and an object drop prevention baffle 80 is provided between the lower portion of the well Zhou Langan and the ground;
a safety net 9 is placed on top of the originating well 100.
According to the arrangement structure of the pipe jacking starting well, all parts are assembled in place through the hoisting assembly and the external hoisting equipment, and then pipe jacking tunneling operation can be carried out; firstly, constructing an originating well, then pouring a foundation pit bottom plate 1, then installing a pair of guide rails, then sequentially installing a rigid back rest 3, a main pushing device 400, a push bench 6, a pressure bearing backing plate 51 and a top iron 52, and finally installing a pipe joint to be pushed in between the top iron 52 and the push bench 6. The push bench 6 excavates the stratum while pushing in, and extends the pipeline. The action point of the combined force of the four jacks is on the vertical line of the center of the pipeline and is slightly lower than the center of the pipeline.
The above embodiments are provided for illustrating the present utility model and not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present utility model, and thus all equivalent technical solutions should be defined by the claims.
Claims (4)
1. An arrangement structure of a pipe jacking starting well comprises a foundation pit bottom plate, a pair of foundation pit guide rails, a rigid back rest, main pushing equipment, a pipe jacking machine support and a pipe jacking machine, wherein the foundation pit bottom plate is arranged in a round starting well; it is characterized in that the method comprises the steps of,
the foundation pit bottom plate is poured at the bottom of the originating well by adopting concrete;
the pair of foundation pit guide rails and the jacking pipe are paved on the foundation pit bottom plate in the same direction, and the rear ends of the pair of foundation pit guide rails are connected with embedded parts positioned in the pushing side walls of the originating well;
the rigid back rest is a circular arc-shaped steel plate matched with the wall of the originating well, the rigid back rest is arranged on the inner side of the pushing side wall of the originating well, and the rigid back rest and the pushing side wall are filled with cast-in-situ C20 concrete;
the main pushing equipment comprises four jacks which are equally divided into two rows and symmetrically arranged on two sides of the axis of the pipeline, two jacks of each row of jacks are arranged one by one, the four jacks are respectively arranged on the inner end face of the rigid back rest through a jack bracket, and the ends of telescopic rods of the four jacks are propped against the rear end face of a pressure-bearing backing plate;
the pipe jacking machine support is bridged between the front parts of the pair of foundation pit guide rails;
the push bench is arranged on the push bench support, the rear end of the push bench is connected with a pipe section to be jacked, and the rear end face of the pipe section to be jacked is propped against the front end face of the pressure-bearing backing plate through a jacking iron.
2. The arrangement structure of a pipe-jacking starting well according to claim 1, wherein the bottoms of the pair of foundation pit guide rails are provided with steel sleeper plates.
3. The arrangement of push bench origination wells according to claim 1, wherein the arrangement further comprises two safety backoff platforms; the two safety backoff platforms are fixed in the originating well and are not less than 2m away from the bottom of the originating well, and each safety backoff platform is positioned between the upper part of a pair of foundation pit guide rails and the inner wall surface of the originating well to form an arch shape; each safety backoff platform comprises a platform bracket and a grid paved on the platform bracket.
4. The arrangement of push bench origination wells according to claim 1, wherein the arrangement further comprises wells Zhou Langan and safety nets; the well Zhou Langan is arranged on the ground at the top of the initiating well, and an anti-object falling baffle is arranged between the lower part of the well Zhou Langan and the ground; the safety net is disposed on top of the originating well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322001294.7U CN220395705U (en) | 2023-07-27 | 2023-07-27 | Arrangement structure of pipe-jacking starting well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322001294.7U CN220395705U (en) | 2023-07-27 | 2023-07-27 | Arrangement structure of pipe-jacking starting well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220395705U true CN220395705U (en) | 2024-01-26 |
Family
ID=89603698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322001294.7U Active CN220395705U (en) | 2023-07-27 | 2023-07-27 | Arrangement structure of pipe-jacking starting well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220395705U (en) |
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2023
- 2023-07-27 CN CN202322001294.7U patent/CN220395705U/en active Active
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