CN220953455U - Assembled pipe jacking working well structure suitable for deep soft soil layer - Google Patents
Assembled pipe jacking working well structure suitable for deep soft soil layer Download PDFInfo
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- CN220953455U CN220953455U CN202322366584.1U CN202322366584U CN220953455U CN 220953455 U CN220953455 U CN 220953455U CN 202322366584 U CN202322366584 U CN 202322366584U CN 220953455 U CN220953455 U CN 220953455U
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- working well
- soft soil
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- 239000002689 soil Substances 0.000 title claims abstract description 58
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 13
- 239000004567 concrete Substances 0.000 claims description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 description 29
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000003831 antifriction material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The application discloses an assembled pipe-jacking working well structure suitable for a deep soft soil layer, which comprises a primary supporting structure, wherein the primary supporting structure comprises a first stirring pile and reinforced steel, the first stirring pile extends along the vertical direction, the first stirring piles are connected with each other along the horizontal direction and enclose a working well, and the opposite two sides of the working well are respectively a counter-force wall side and a pipe-jacking side; the reinforced steel is inserted into the first stirring pile along the vertical direction; the secondary support structure comprises a second stirring pile which extends along the vertical direction and is closely arranged on the counter-force wall side and the jacking pipe side of the working well; a bottom plate disposed at the bottom of the working well. According to the application, the first stirring pile is inserted with the reinforced steel to improve the rigidity of the primary supporting structure, and the structural strength of the counter-force wall side and the jacking pipe side is improved through the secondary supporting structure, so that the probability of deformation of the supporting structure in the jacking pipe process is reduced; and the contact area between the working well and the soil body is increased through the bottom plate at the bottom, so that the pressure intensity on the deep soft soil layer is reduced.
Description
Technical Field
The application relates to an assembled pipe-jacking working well structure suitable for a deep soft soil layer in the technical field of pipe-jacking working wells.
Background
The pipe jacking method has the advantages of small excavation area, no influence on traffic, small influence on adjacent existing buildings and the like, and is widely applied to construction of underground pipelines. In the pipe jacking construction process, the most important is the construction of an initial working well, which is the starting point of pipe jacking construction.
The traditional support structure of the initial working well mainly comprises an underground continuous wall structure, a bored pile structure, a sunk well/reverse construction method support structure, a steel sheet pile structure and the like. The structure has excellent performance in foundation pit supporting engineering, but has some defects in pipe jacking construction. Although the underground diaphragm wall structure has high strength, good integrity and high construction safety, the construction cost is high, the construction period is long, the joint is easy to leak and is difficult to repair after cracking; the bored pile structure has wide application range and high strength, but has long construction period, difficult control of construction quality and difficult slurry treatment; although the open caisson structure has good integrity, larger bearable load and simple construction, the open caisson structure is easy to incline or sink difficultly in construction; the steel sheet pile structure has the advantages of simple and easy operation, low construction cost and low strength, and can realize the repeated utilization of materials. The traditional support structure has the problems that the condition of cutting steel bars and steel plates, the difficulty in reserving and forming holes, the inclination of an open caisson, the bearing capacity of the support structure and the like can be caused in pipe jacking construction, and the efficiency and the safety of pipe jacking construction are seriously affected.
Moreover, for a deep soft soil layer, as the soil body has stronger deformation amplitude when being pressed, sedimentation easily occurs in the construction process, so that deviation occurs in the follow-up pipe jacking process, therefore, a pipe jacking working well supporting structure with higher rigidity is required to be adopted to maintain the form of the working well, and meanwhile, the self weight of the supporting structure is required to be lighter so as to reduce the pressed sedimentation of the soil body.
Disclosure of utility model
The application aims to at least solve one of the technical problems in the prior art, and provides an assembled pipe jacking working well structure suitable for a deep soft soil layer, which can complete the supporting work of the pipe jacking working well in the deep soft soil layer and simultaneously lighten the pressure intensity of the supporting structure and the pipe jacking working on peripheral soil bodies.
According to an embodiment of the present application, there is provided an assembled pipe jacking working well structure suitable for a deep soft soil layer, including:
The primary support structure comprises a plurality of first stirring piles and reinforcing steel, wherein the first stirring piles extend in the vertical direction and are connected with each other in the horizontal direction to form a working well for jacking pipe work, and the opposite two sides of the working well are respectively a counter-force wall side and a jacking pipe side; the reinforced steel is inserted into the first stirring pile along the vertical direction so as to improve the rigidity of the primary supporting structure;
the secondary support structure comprises a plurality of second stirring piles which extend along the vertical direction and are closely arranged on the counter-force wall side and the top pipe side of the working well;
and the bottom plate is arranged at the bottom of the working well.
According to an embodiment of the present application, further, the reinforcement steel is specifically H-shaped steel, and one of the flange plates of the reinforcement steel faces the working well.
According to an embodiment of the present application, further, the number of the secondary support structures is at least two, and are mutually connected.
According to an embodiment of the present application, further, a first-layer secondary support structure is adjacent to the working well in the two adjacent secondary support structures, and a second-layer secondary support structure is further away from the working well, where a width of the first-layer secondary support structure is greater than a width of the second-layer secondary support structure.
According to an embodiment of the application, the bottom plate is in particular a reinforced concrete plate.
According to an embodiment of the present application, further, the fabricated pipe-jacking working well structure of the deep soft soil layer further comprises a plain concrete layer laid over the bottom plate to harden and reinforce.
According to an embodiment of the present application, the assembled pipe-jacking working well structure for the deep soft soil layer further comprises a cross beam and diagonal bracing beams, wherein the cross beam extends along the horizontal direction and is installed on each side surface of the working well, and two ends of each diagonal bracing beam are respectively connected to two adjacent cross beams.
According to the embodiment of the application, the assembled pipe jacking working well structure of the deep soft soil layer further comprises a counterforce wall, wherein the counterforce wall is arranged in the working well and abuts against the side of the counterforce wall.
According to the embodiment of the application, the assembled pipe-jacking working well structure of the deep soft soil layer further comprises a pipe-jacking steel plate, wherein the pipe-jacking steel plate is arranged in the working well and abuts against the pipe-jacking side, and an opening through which a pipe jacking can pass is formed in the pipe-jacking steel plate.
According to the embodiment of the application, the assembled pipe-jacking working well structure of the deep soft soil layer further comprises a water stop ring, and the water stop ring is sleeved and installed at the hole to reduce water in soil body from penetrating into the working well.
The beneficial effects of the embodiment of the application at least comprise: according to the application, the first stirring pile is inserted with the reinforced steel to improve the rigidity of the primary supporting structure, and the structural strength of the counter-force wall side and the jacking pipe side is improved through the secondary supporting structure, so that the probability of deformation of the supporting structure in the jacking pipe process is reduced; and the contact area between the working well and the soil body is increased through the bottom plate at the bottom, so that the pressure intensity on the deep soft soil layer is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the application, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a top view of an assembled top pipe work well structure for a deep soft soil layer in accordance with an embodiment of the present application;
FIG. 2 is a side view of an assembled pipe-jacking manhole structure for a deep soft soil layer according to an embodiment of the present application;
FIG. 3 is a front view of an assembled pipe-jacking manhole structure for a deep soft soil layer according to an embodiment of the present application;
Fig. 4 is a schematic diagram of the installation of a water stop ring 900 of an assembled pipe-jacking manhole structure for a deep soft soil layer according to an embodiment of the present application.
Reference numerals: 100-primary support structure, 110-first stirring pile, 120-reinforced steel, 130-working well, 131-counter-force wall side, 132-top pipe side, 200-secondary support structure, 210-second stirring pile, 220-first layer secondary support structure, 230-second layer secondary support structure, 300-bottom plate, 400-plain concrete layer, 500-crossbeam, 600-diagonal bracing beam, 700-counter-force wall, 800-top pipe steel plate, 810-hole and 900-water stop ring.
Detailed Description
Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.
In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
In the description of the present application, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
At present, most underground pipelines in cities are constructed in a pipe jacking mode, and the pipe jacking type underground pipeline has the advantages of small excavation area and little influence on surrounding environment. However, the pipe jacking construction also has higher requirements on the precision of pipe jacking work, especially an initial working well serving as a starting point of pipe jacking, and an inlet port of the pipe jacking must be kept within a certain position range so that a pipeline can be jacked in a given direction. In a construction scene of soft soil, soft soil is easy to be pressed and deformed to generate a sedimentation phenomenon, and particularly counter force and vibration generated during pipe jacking can further aggravate the deformation of a working well, so that the pipe jacking work in soft soil layer construction is difficult and heavy.
Therefore, the present application proposes an assembled pipe-jacking working well structure suitable for a deep soft soil layer, which is provided with a primary supporting structure 100 and a secondary supporting structure 200, wherein a first stirring pile 110 in the primary supporting structure 100 is internally provided with reinforcing steel 120 to improve supporting rigidity, and the secondary supporting structure 200 is arranged on a counter-force wall side 131 and a pipe-jacking side 132 of a working well 130 to mainly improve structural strength of the two sides, thereby meeting pipe-jacking strength requirements of the working well 130 in the deep soft soil layer. The bottom of the working well 130 is further provided with a bottom plate 300 to increase the contact area of the working well 130 with the soil body, and reduce the pressure of the working well 130 and construction equipment therein on the soil body, thereby reducing the settlement amplitude.
Referring to fig. 1, the assembled pipe-jacking working well structure for a deep soft soil layer in an embodiment of the present application includes a primary support structure 100, a secondary support structure 200 and a bottom plate 300, wherein the primary support structure 100 and the secondary support structure 200 are used for supporting a lateral soil body in a pipe-jacking construction area, and the bottom plate 300 is used for reinforcing the bottom of the pipe-jacking construction area to reduce sedimentation.
Specifically, the primary support structure 100 includes a plurality of first mixing piles 110 and reinforcing steel 120, the first mixing piles 110 are vertically extended, and the plurality of first mixing piles 110 are horizontally connected to each other and surround a working well 130 for performing a pipe jacking work, in which the subsequent pipe jacking work is completed. Reinforcing steel 120 is inserted into the first mixing pile 110, thereby constituting a mixed structure of steel and concrete, and enhancing the rigidity of the first supporting structure 100. Further, the reinforcement steel 120 is an H-section steel, one of which is disposed toward the working well 130. In the present application, the vertical direction means a direction perpendicular to a horizontal plane, and the horizontal direction means a direction parallel to the horizontal plane.
Opposite sides of the working well 130 are a reaction wall side 131 and a jacking pipe side 132 respectively, the reaction wall side 131 is used for contacting with the jacking pipe equipment and providing a reaction force, and the pipeline is jacked in from a hole reserved in the jacking pipe side 132 to complete jacking pipe work.
The secondary support structure 200 includes a plurality of second stirring piles 210, and the second stirring piles 210 extend in the vertical direction and are closely arranged on the counter-force wall side 131 and the top pipe side 132 of the working well 130, thereby further improving the structural strength of both sides. Specifically, the number of the secondary supporting structures 200 is at least two, and the two adjacent secondary supporting structures 200 are adjacent to the working well 130 and are the first secondary supporting structure 220, and the second secondary supporting structure 230 is far away from the working well 130, and the width of the first secondary supporting structure 220 is larger than that of the second secondary supporting structure 230, so that the supporting strength of the secondary supporting structure 200 meets the requirement, and meanwhile, the construction number of the second stirring piles 210 is saved.
Referring to fig. 2, a base plate 300 is installed at the bottom of a working well 130 to carry push bench in the working well 130, and the base plate 300 is embodied as a reinforced concrete slab, thereby having superior structural strength and rigidity, and being less prone to collapse under heavy pressure. Further, the fabricated pipe-jacking working well structure suitable for the deep soft soil layer further comprises a plain concrete layer 400 which is cast by plain concrete and laid above the bottom plate 300 to be combined with the bottom plate 300 into a whole, and after hardening, the bottom plate 300 can be further reinforced.
Further, the assembled pipe-jacking working well structure suitable for the deep soft soil layer further comprises a cross beam 500 and an inclined strut 600, wherein the cross beam 500 extends along the horizontal direction and is installed on each side surface of the working well 130, and is connected with the first stirring piles 110 in the primary supporting structure 100 for further reinforcing the primary supporting structure 100. The diagonal bracing beams 600 are connected at both ends thereof to the adjacent two cross members 500, respectively, so that the adjacent two cross members 500 are connected as a unit to improve structural strength. It is noted that the angle between the diagonal brace 600 and the cross member 500 is 45 degrees, so that the stress is more uniform.
The cross beam 500 and the diagonal bracing beam 600 are steel beams, and specifically, H-shaped steel or L-shaped steel can be adopted.
Further, the assembled pipe-jacking working well structure suitable for the deep soft soil layer further comprises a counter-force wall 700 and a pipe-jacking steel plate 800. The reaction wall 700 is provided in the working well 130 and abuts against the reaction wall side 131, and when jacking work is performed, the jacking equipment abuts against the reaction wall 700 and transmits the acting force to the working well 130 through the reaction wall 700. Impact of the pipe jacking equipment on the working well 130 can be buffered by arranging the counterforce wall 700, pressure intensity of the pipe jacking equipment on the working well 130 is reduced, and deformation of the working well 130 due to pipe jacking stress is reduced. Referring to fig. 3, a push tube steel plate 800 is disposed within the working well 130 and abuts the push tube side 132 for improving the structural strength of the push tube side 132. Specifically, the top steel plate 800 is provided with an opening 810 through which the top pipe passes.
Further, referring to fig. 4, the assembled pipe-jacking manhole structure suitable for deep soft soil layers further comprises a water stop ring 900 sleeved at the hole 810 to reduce infiltration of water in the soil body into the manhole 130. Specifically, the water stop ring 900 is an elastic member, and the top pipe passes through the middle of the water stop ring 900, the inner side of the water stop ring 900 is attached to the top pipe, and the outer side of the water stop ring 900 is attached to the hole 810, so that the gap between the top pipe and the hole 810 is filled, and the waterproof sealing performance is improved.
The following describes the construction process of the assembled pipe jacking working well structure applicable to the deep soft soil layer:
S100, drilling a soil body through a stirring pile machine and grouting, so that first stirring piles 110 are constructed, the adjacent first stirring piles 110 are arranged in a staggered mode, and a plurality of first stirring piles 110 jointly encircle the construction range of a working well 130;
S200, inserting reinforcing steel 120 in 30 minutes after the construction of the first stirring pile 110, derusting the reinforcing steel 120 before inserting, and brushing antifriction materials on the surface;
S300, drilling a soil body and grouting through a stirring pile machine at positions of a counter-force wall side 131 and a jacking pipe side 132 which are preset as a working well 130, so as to construct second stirring piles 210, wherein adjacent second stirring piles 210 are arranged in a staggered manner;
S400, excavating a working well 130 after the hardening degree of the first stirring pile 110 and the second stirring pile 210 reaches 80%;
S500, arranging a bottom plate 300 at the bottom of the working well 130, and paving a plain concrete layer 400 on the bottom plate 300, and finishing bottom sealing after the plain concrete layer is hardened;
s600, mounting a cross beam 500 and an inclined strut 600 on the side wall of the working well 130;
S700, installing a counterforce wall 700 on the counterforce wall side 131, installing a jacking pipe steel plate 800 on the jacking pipe side 132, and installing a water stop ring 900 at an opening 810 of the jacking pipe steel plate 800;
s800, finishing the construction of the working well structure, and starting jacking pipe work.
And when the working well structure is required to be dismantled after the pipe jacking work is finished, the working well structure is dismantled according to the reverse sequence of the steps, so that corresponding equipment and structures can be recovered, and the working well structure can be used for the construction of the next working well structure.
While the preferred embodiments of the present application have been illustrated and described, the present application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (10)
1. An assembled push pipe work well structure suitable for deep soft soil layer, which is characterized by comprising:
The primary support structure (100), the primary support structure (100) comprises a plurality of first stirring piles (110) and reinforcing steel (120), the first stirring piles (110) are connected with each other in the horizontal direction and enclose a working well (130) for jacking pipe work, and the opposite two sides of the working well (130) are respectively a counter-force wall side (131) and a jacking pipe side (132); the reinforcement steel (120) is inserted into the first stirring pile (110) in a vertical direction to raise the rigidity of the primary support structure (100);
A secondary support structure (200), wherein the secondary support structure (200) comprises a plurality of second stirring piles (210), and the second stirring piles (210) extend along the vertical direction and are closely arranged on the counter-force wall side (131) and the jacking pipe side (132) of the working well (130);
-a bottom plate (300), said bottom plate (300) being arranged at the bottom of said working well (130).
2. The fabricated pipe-jacking manhole structure suitable for a deep soft soil layer according to claim 1, wherein: the reinforcement steel (120) is specifically H-shaped steel, and one flange plate of the reinforcement steel (120) faces the working well (130).
3. The fabricated pipe-jacking manhole structure suitable for a deep soft soil layer according to claim 1, wherein: the number of the secondary support structures (200) is at least two layers and are mutually connected.
4. The fabricated pipe-jacking working well structure suitable for use in a deep soft soil layer as claimed in claim 3, wherein: two adjacent secondary support structures (200) are adjacent to the working well (130) and are first-layer secondary support structures (220), the second-layer secondary support structures (230) are far away from the working well (130), and the width of the first-layer secondary support structures (220) is larger than that of the second-layer secondary support structures (230).
5. The fabricated pipe-jacking manhole structure suitable for a deep soft soil layer according to claim 1, wherein: the bottom plate (300) is specifically a reinforced concrete plate.
6. The fabricated pipe-jacking manhole structure suitable for a deep soft soil layer according to claim 1, wherein: the assembled pipe-jacking working well structure of the deep soft soil layer further comprises a plain concrete layer (400), and the plain concrete layer (400) is paved above the bottom plate (300) to be hardened and reinforced.
7. The fabricated pipe-jacking manhole structure suitable for a deep soft soil layer according to claim 1, wherein: the assembled pipe-jacking working well structure of the deep soft soil layer further comprises a cross beam (500) and diagonal bracing beams (600), wherein the cross beam (500) extends along the horizontal direction and is installed on each side face of the working well (130), and two ends of each diagonal bracing beam (600) are respectively connected to two adjacent cross beams (500).
8. The fabricated pipe-jacking manhole structure suitable for a deep soft soil layer according to claim 1, wherein: the assembled pipe jacking working well structure of the deep soft soil layer further comprises a counter-force wall (700), and the counter-force wall (700) is arranged in the working well (130) and abuts against the counter-force wall side (131).
9. The fabricated pipe-jacking manhole structure suitable for a deep soft soil layer according to claim 1, wherein: the assembled pipe-jacking working well structure of the deep soft soil layer further comprises a pipe-jacking steel plate (800), wherein the pipe-jacking steel plate (800) is arranged in the working well (130) and abuts against the pipe-jacking side (132), and a hole (810) through which a pipe jacking can pass is formed in the pipe-jacking steel plate (800).
10. The fabricated pipe-jacking manhole structure suitable for use in deep soft soil layers as claimed in claim 9, wherein: the assembled pipe-jacking working well structure of the deep soft soil layer further comprises a water stop ring (900), and the water stop ring (900) is sleeved and installed at the hole (810) so as to reduce water in soil from penetrating into the working well (130).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322366584.1U CN220953455U (en) | 2023-08-31 | 2023-08-31 | Assembled pipe jacking working well structure suitable for deep soft soil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322366584.1U CN220953455U (en) | 2023-08-31 | 2023-08-31 | Assembled pipe jacking working well structure suitable for deep soft soil layer |
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| CN220953455U true CN220953455U (en) | 2024-05-14 |
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| CN202322366584.1U Active CN220953455U (en) | 2023-08-31 | 2023-08-31 | Assembled pipe jacking working well structure suitable for deep soft soil layer |
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| CN (1) | CN220953455U (en) |
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2023
- 2023-08-31 CN CN202322366584.1U patent/CN220953455U/en active Active
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