CN116427520A - Novel method for burying pipe without slotting and foundation pit supporting structure - Google Patents
Novel method for burying pipe without slotting and foundation pit supporting structure Download PDFInfo
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- CN116427520A CN116427520A CN202310566266.1A CN202310566266A CN116427520A CN 116427520 A CN116427520 A CN 116427520A CN 202310566266 A CN202310566266 A CN 202310566266A CN 116427520 A CN116427520 A CN 116427520A
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- foundation pit
- steel sheet
- pipeline
- supporting structure
- pile
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 239000002689 soil Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 7
- 101150054854 POU1F1 gene Proteins 0.000 description 11
- 238000005553 drilling Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000009933 burial Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/14—Sealing joints between adjacent sheet piles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Public Health (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a novel foundation pit supporting structure method without grooving buried pipes and a foundation pit supporting structure device for realizing the method. According to the invention, the characteristics of the high-pressure jet grouting pile for injecting, diffusing and grouting are fully utilized, and the steel sheet pile and the surrounding purlin support are combined to form a foundation pit support structure under a complex construction environment so as to isolate underground water, and meanwhile, the reinforced soil is utilized to increase the safety of the foundation pit support, reduce the influence on the surrounding environment and improve the efficiency of foundation pit operation.
Description
Technical Field
The invention relates to the technical field of foundation pit support, in particular to a novel method for burying a pipe without slotting and a foundation pit support structure.
Background
In municipal engineering construction, the construction of water supply and drainage pipelines faces the difficult factors of limited operation space, difficult land reclamation, large local burial depth and the like. Therefore, the non-slotting pipe burying technology is often adopted in difficult construction areas, and comprises jacking pipes, directional drilling, pipe tamping and the like.
In the prior art, the publication CN209368845U relates to this technology, and discloses a foundation pit supporting structure device without grooving the buried pipe, which is substantially similar to the conventional foundation pit supporting structure device without grooving the buried pipe in the market at present. Mainly comprises; the foundation pit supporting structure comprises a coaming, a first layer of coaming , a second layer of coaming , a third layer of coaming , a fourth layer of coaming and a connecting piece for the foundation pit supporting structure. The connecting piece both ends are bolted connection mainly to and the connecting piece main part is located the concave surface of second L type connecting plate, and in addition the extension board, swash plate and second L type connecting plate form right triangle, and the stability is further improved to whole junction.
However, the prior art has some problems that well chambers are required to be installed at specific positions of the pipe body in order to ensure the normal operation of the pipeline after the non-slotting pipe burying is completed. If foundation pit support is needed when a well room is installed, the foundation pit support structure which is available at present cannot be closed, such as steel sheet pile support, because the foundation pit support depth exceeds the pipeline burial depth and the pipeline is buried in advance. Especially when the groundwater level is higher, the stratum is sand or mucky soil, and in the pipeline trend and the crossing position of foundation ditch, very easily form the drift sand, cause the foundation ditch siltation unable excavation, have certain quality potential safety hazard. In a small foundation pit supporting mode in municipal pipe network engineering, the combined supporting of the steel sheet pile and the retaining plate is difficult to resist groundwater and sand, so that the foundation pit is difficult to form; the combination mode of the open caisson and the water stop pile cannot be constructed below the pipeline, and the cost is high.
Disclosure of Invention
The invention aims to provide a novel method for not grooving buried pipes and a foundation pit supporting structure, which are used for solving the problems of difficult excavation, difficult forming, high cost and potential safety hazard in the background art.
Accordingly, another technical problem to be solved by the invention is to provide a safer and more effective novel method for burying pipes without slotting.
In order to achieve the above object, the present invention provides a method for solving the above technical problems, comprising the steps of; a method for installing the buried pipe without slot includes such steps as applying steel sheet piles to the periphery of foundation pit, lifting the high-pressure rotary jet drill rod on the outside of pipeline, using the soil body on the upper and lower sides of the reinforced pipeline as water-stopping reinforcing pile, using high-pressure rotary jet pile to stop water for reinforcing the outside of the non-engaged position, machining the purlin according to the size of foundation pit, digging to designed height, and removing the purlin.
As an improvement of the novel ungrooved pipe burying method; the reinforcement effect of the foundation pit supporting structure is realized by fully utilizing the characteristic of the high-pressure jet grouting pile for jetting, diffusing and grouting to reinforce the soil body and combining the steel sheet pile and the surrounding purlin supporting.
As for the novel foundation pit supporting structure device without grooving buried pipes; the invention discloses a foundation pit supporting structure device for solving the technical problems, which comprises a foundation pit, a pipeline and steel sheet piles, wherein the steel sheet piles are fully distributed and applied on two sides of the foundation pit along the trend of the pipeline, a supporting gap is reserved when the steel sheet piles are applied in the direction perpendicular to the trend of the pipeline, high-pressure jet grouting piles are arranged on the outer side of the supporting gap, and brackets are welded on the steel sheet piles.
As a further improvement of the foundation pit supporting structure device of the invention; the bracket opposite sides quantity is the same and evenly distributed passes through the welded fastening on enclosing the purlin, encloses the purlin then and installs on the sheet pile and enclose the purlin and put up through welded fixed connection stull between the both sides along the pipeline trend, and uses the angle brace in the corner.
As a further improvement of the foundation pit supporting structure device of the invention; the steel sheet piles are mainly and completely arranged on two sides of the foundation pit in the direction of parallel pipelines, the intersection of the foundation pit and the pipelines is along the outer side of the pipelines, and the steel sheet piles of the parallel pipelines are tightly connected with the steel sheet piles of the vertical pipelines.
As a further improvement of the foundation pit supporting structure device of the invention; the position of the pipeline needs to be ascertained, and a certain protection distance is reserved on two sides of the pipeline.
Compared with the prior art, the invention has the beneficial effects that; the invention can effectively isolate water and strengthen soil layers above and below the pipeline, has high reliability and lower cost, and the used machinery and materials are common in construction sites, and are simple and easy to obtain, high in reliability, reusable and better in economical efficiency. The method provided by the invention has high reliability and small influence on surrounding environment, provides an alternative supporting process, can maintain a stable supporting effect under extreme working conditions through reliability checking calculation, can reduce the number of high-pressure jet grouting piles, simplify or cancel surrounding purlins under good working conditions, and has higher working efficiency.
Drawings
FIG. 1 is a schematic structural view of a novel foundation pit supporting structure without grooving the buried pipe;
reference numerals illustrate;
1-foundation pit, 2-pipeline, 3-steel sheet pile, 4-support notch, 5-high pressure jet grouting pile, 6-bracket, 7-enclosing purlin, 8-cross brace and 9-angle brace.
Detailed Description
For the purpose of promoting an understanding of the principles of the invention, reference will now be made in detail to the embodiments described herein, including examples, illustrated in the accompanying drawings.
The novel non-slotting pipe burying method mainly comprises the following steps of; the method adopts a foundation pit supporting structure device without grooving buried pipes, the device is at least provided with steel sheet piles, high-pressure jet grouting piles and enclosing purlins, the steel sheet piles are arranged on the periphery of a foundation pit, the high-pressure jet grouting drill rods are lifted at a constant speed outside pipelines where the steel sheet piles cannot be arranged, soil bodies on the upper side and the lower side of the pipelines are reinforced by grouting to serve as water-stopping reinforcing piles, the water-stopping reinforcing piles are used on the outer sides of checked non-meshed parts, finally the enclosing purlins are processed according to the size of the foundation pit, the enclosing purlins are excavated to a designed elevation after being installed, and the enclosing purlins are removed and the steel sheet piles are pulled out after construction is completed.
The reinforcement effect of the foundation pit supporting structure is realized by fully utilizing the characteristic of the high-pressure jet grouting pile for jetting, diffusing and grouting to reinforce the soil body and combining the steel sheet pile and the surrounding purlin supporting. The high-pressure jet grouting pile drill rod is used for jet grouting along the outer side of the pipeline, slurry diffusion is combined with soil bodies at the upper part and the lower part of the pipeline to form a waterproof curtain and strengthen the soil bodies, and steel sheet piles are inserted into the space at the outer side of the pipeline to serve as supporting piles to be combined with other steel sheet piles and install enclosing purlins to strengthen foundation pits.
FIG. 1 shows a specific structure of a novel foundation pit supporting structure device without grooving buried pipes. As shown in fig. 1; the foundation pit supporting structure device comprises a foundation pit 1, a pipeline 2 and steel sheet piles 3, wherein the steel sheet piles 3 are fully distributed and driven on two sides of the foundation pit 1 along the trend of the pipeline 2, and when the steel sheet piles 3 are driven in the trend of the vertical pipeline 2, supporting gaps 4 are reserved for avoiding damage to the pipeline 2 caused by hard contact of the steel sheet piles 3 and the pipeline 2, soil is reinforced outside the supporting gaps 4 by spraying slurry through a high-pressure rotary jet drilling machine, high-pressure rotary jet grouting piles 5 are formed, and the functions of reinforcing soil supporting and water stopping are achieved. During waiting for the strength of the high pressure jet grouting piles 5 to increase, the enclosing purlins 7 are machined according to the size of the foundation pit 1. And then excavating the foundation pit 1, and welding brackets 6 on the steel sheet piles along the periphery of the foundation pit 1 according to the specified intervals when the depth reaches the specified depth.
The brackets 6 are fixed on the enclosing purlins 7 in the same opposite side number and uniformly distributed through welding, the enclosing purlins 7 are generally I-shaped steel and are arranged on the steel sheet piles 3, and the brackets are fixedly connected with the cross braces 8 through welding between the two side enclosing purlins 7 along the trend of the pipeline 2, and the corner is supported by the gussets 9. When the surrounding purlin 7, the cross braces 8 and the gussets 9 are installed, the foundation pit 1 is excavated to the designed elevation.
The pipeline 2 needs to be ascertained in position, a certain protection distance is reserved on two sides of the pipeline 2, steel sheet piles 3 are mainly and completely applied on two sides of the foundation pit in the direction parallel to the pipeline 2, the intersection of the foundation pit 1 and the pipeline 2 is along the outer side of the pipeline 2, and the steel sheet piles 3 of the parallel pipeline 2 are tightly connected with the steel sheet piles 3 of the vertical pipeline 2. And selecting a suitable high-pressure jet grouting pile 5 process according to geological conditions, using a drill rod to spray high-pressure slurry at a reinforced notch of the steel sheet pile 3 to reinforce soil, and when drilling above the pipeline 2, grasping a drill rod for footage by combining the burial depth of the pipeline 2, wherein the position below the elevation of the pipeline 2 is subjected to important reinforcement, and forming a waterproof supporting structure by the pile body and the steel sheet pile 3 after the completion of the slurry jet grouting reinforcement.
Novel foundation pit supporting structure and method without grooving buried pipe, comprising the following steps:
step 1: after the measuring paying-off and piling machine is in place, steel sheet piles 3 are all applied to two sides of the foundation pit 1 in the direction parallel to the pipeline 2, and the steel sheet piles 3 are applied to the intersection of the foundation pit 1 and the pipeline 2 along the outer side of the pipeline 2.
Step 2: and (3) on the outer side of the steel sheet pile 3, a drilling machine is used for tightly clinging to the outer side of the pipeline, a drill rod is lifted at a constant speed, and the grouting reinforcement soil body is used as a water stopping reinforcement pile.
Step 3: and (3) checking the supporting effect of the steel sheet pile, and using the high-pressure jet grouting pile 5 to stop water and reinforce the outer side of the unoccluded part.
Step 4: and processing the enclosing purlin 7 according to the size of the foundation pit 1, and waiting for the improvement of the strength of the water-stopping reinforcement pile.
Step 5: when the foundation pit 1 is excavated and the shallow depth is reached, after the enclosing purlin 7 is installed on the steel sheet pile 3 by manual approach, the corner supports 9 are used at the turning positions.
Step 6: and excavating the surrounding purlin 7 to a designed elevation after the installation is completed, and removing the surrounding purlin 7 and pulling out the steel sheet pile 3 after the construction is completed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A method for installing the pipe without slot includes such steps as providing a steel sheet pile, high-pressure jet grouting piles and enclosing purlin, applying a high-pressure jet grouting drill rod to the periphery of foundation pit, lifting the high-pressure jet grouting drill rod at uniform speed on the outside of pipeline where the steel sheet pile cannot be applied, using the soil body above and below the reinforced pipeline as water-stop reinforcing pile, using high-pressure jet grouting pile to stop water for reinforcing the outside of the checked non-engaged position, machining the enclosing purlin according to the size of foundation pit, digging to a designed height, and removing the enclosing purlin.
2. A novel ungrooved pipe laying method as claimed in claim 1, wherein; the reinforcement effect of the foundation pit supporting structure is realized by fully utilizing the characteristic of reinforcing soil body by spraying, diffusing and grouting through the high-pressure jet grouting piles and combining steel sheet piles and surrounding purlin supporting.
3. A novel foundation pit supporting structure without grooving for implementing the method according to any one of claims 1 to 2, comprising a foundation pit (1), a pipe (2) and a steel sheet pile (3), characterized in that; the steel sheet pile (3) is fully distributed and driven on two sides of the foundation pit (1) along the trend of the pipeline (2), a supporting notch (4) is reserved when the steel sheet pile (3) is driven in the trend of the vertical pipeline (2), a high-pressure jet grouting pile (5) is assembled on the outer side of the supporting notch (4), and brackets (6) are welded on the steel sheet pile (3).
4. A foundation pit supporting structure according to claim 3, wherein: the bracket (6) is the same in opposite side quantity and evenly distributed and is fixed on the steel sheet pile through welding, the enclosing purlins (7) are installed on the bracket (6), the steel sheet pile (3) is fixedly connected with the transverse brace (8) through welding between the enclosing purlins (7) along the two sides of the trend of the pipeline (2), and the corner is provided with the angle brace (9).
5. A foundation pit supporting structure according to claim 3, wherein: the steel sheet piles (3) are mainly and completely applied to two sides of the foundation pit in the direction parallel to the pipeline (2), and the intersection of the foundation pit (1) and the pipeline (2) is along the outer side of the pipeline.
6. The foundation pit supporting structure of claim 5, wherein: the pipeline (2) needs to be ascertained in position, and certain protection distances are reserved on two sides of the pipeline (2).
7. The foundation pit supporting structure of claim 5, wherein: the steel sheet piles (3) of the parallel pipelines (2) are tightly connected with the steel sheet piles (3) of the vertical pipelines (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310566266.1A CN116427520A (en) | 2023-05-18 | 2023-05-18 | Novel method for burying pipe without slotting and foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310566266.1A CN116427520A (en) | 2023-05-18 | 2023-05-18 | Novel method for burying pipe without slotting and foundation pit supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116427520A true CN116427520A (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310566266.1A Pending CN116427520A (en) | 2023-05-18 | 2023-05-18 | Novel method for burying pipe without slotting and foundation pit supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116427520A (en) |
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2023
- 2023-05-18 CN CN202310566266.1A patent/CN116427520A/en active Pending
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