CN110552361A - Pipe pile structure used as dewatering well - Google Patents
Pipe pile structure used as dewatering well Download PDFInfo
- Publication number
- CN110552361A CN110552361A CN201810562247.0A CN201810562247A CN110552361A CN 110552361 A CN110552361 A CN 110552361A CN 201810562247 A CN201810562247 A CN 201810562247A CN 110552361 A CN110552361 A CN 110552361A
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- CN
- China
- Prior art keywords
- tubular pile
- submersible pump
- hole
- ground
- pile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 claims description 2
- 235000009120 camo Nutrition 0.000 claims description 2
- 235000005607 chanvre indien Nutrition 0.000 claims description 2
- 239000011487 hemp Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- 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
- E02D5/22—Piles
Abstract
The invention discloses a pipe pile structure used as a dewatering well, which comprises a vertical pipe pile arranged in a ground drilled hole, a submersible pump arranged in the pipe pile and accessories. Wherein, the vertical pipe pile arranged in the ground drilling hole is used for bearing and also used as a dewatering well shaft; and the submersible pump and the accessories are arranged in the tubular pile and used for pumping water converged into the tubular well to a designated ground drainage point and reducing the underground water level. The vertical tubular pile comprises a ground drilling hole and a steel pipe pile, and the submersible pump and accessories arranged in the tubular pile comprise a submersible pump, a sling and a water pipe. The invention has simple structure and high construction speed, and the pipe pile has the double functions of bearing and dewatering well.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a dewatering well and a supporting or supporting pile structure of building underground structural engineering, and specifically relates to a tubular pile structure serving as a dewatering well.
Background
In the construction of underground structure engineering, when the foundation pit has poor geology, no slope condition is arranged at the periphery, the underground water level is high, the water quantity is large and the soil permeability is good, before the foundation pit is excavated, the water is generally reduced for more than 15 days in advance, and when the underground water level in the foundation pit is reduced to be more than 500mm below the substrate, the earthwork excavation can be carried out; in the process of excavation of the foundation pit, before the foundation pit is excavated to ensure the safety of the side slope of the foundation pit, supporting piles are constructed on the periphery of the foundation pit; when the underground structure adopts a reverse construction method and a local structure needs to be supported temporarily in the construction process, a supporting pile needs to be arranged.
In the prior art, the dewatering well and the supporting or supporting pile are respectively and independently arranged. The dewatering well generally adopts a sand pipe as a shaft, so that the strength is not high, the bearing is not realized, the foundation pit is easy to damage by equipment in the excavation process, and the construction period is long; the supporting or supporting pile is generally a reinforced concrete cast-in-place pile, wet operation is mostly adopted, the construction and maintenance period of the pile is long, and the overall dimension of the pile is not easy to guarantee.
Disclosure of Invention
The invention aims to solve the technical problems that a dewatering well and a support or supporting pile are independently arranged respectively in the construction underground structural engineering, the construction period is long, and the quality is unstable, and provides a tubular pile structure which is simple in structure, high in construction speed and has double functions of bearing and dewatering well.
The purpose of the invention is realized by the following technical scheme:
A tubular pile structure used as a dewatering well comprises a vertical tubular pile arranged in a ground drilled hole, a submersible pump arranged in the tubular pile and accessories; wherein the content of the first and second substances,
the vertical tubular pile arranged in the ground drilling hole is used for bearing and also used as a dewatering well shaft;
The submersible pump and the accessories arranged in the tubular pile are used for pumping water converged into the tubular well to a designated ground drainage point and reducing the underground water level.
The vertical tubular pile arranged in the ground drilling hole comprises a ground drilling hole and a steel pipe pile, the ground drilling hole is vertical to the ground, the diameter of the drilled hole is 20-60 mm larger than the outer diameter of the tubular pile, the depth of the drilled hole exceeds the designed substrate, the depth of the drill hole exceeding the substrate is equal to the length of the submersible pump plus 1000 mm-2000 mm plus the height of the filter material at the bottom of the well (if so), the vertical tubular pile adopts a welded steel pipe or a seamless steel pipe, the tubular pile is arranged in a ground drilled hole, the bottom surface of the tubular pile is welded with a sealing plate which is made of steel plates, the bottom of the tubular pile is seated at the bottom of the drilling hole, the tubular pile is provided with water filtering holes below the substrate, the water filtering holes on the tubular pile are round holes or vertical strip holes, the aperture of the water filtering holes on the tubular pile is 10 mm-20 mm, the number of the water filtering holes on the tubular pile is determined according to the required water filtering area, the upper part of the tubular pile exceeds the ground or the structural plane of the part where the tubular pile is located by 100-500 mm.
Immersible pump and annex in arranging the tubular pile in include immersible pump, hoist cable and water pipe, the immersible pump external diameter is less than the used steel pipe nominal diameter of tubular pile one grade or more than one grade, immersible pump lift should exceed at the bottom of the pump more than outlet pipe mouth height 1000mm, immersible pump upper portion is fixed to the well head with the hoist cable, immersible pump bottom is unsettled, immersible pump bottom unsettled height apart from the hole bottom or filter material top surface 500mm ~ 1000mm, the hoist cable adopts wire rope, hemp rope or nylon rope, the water pipe adopts steel pipe, plastic tubing or rubber tube, the water pipe sub-unit connection is on the outlet of a pump, the appointed drainage point on ground is installed to water.
the invention has the advantages and economic effects that:
The invention has simple structure and high construction speed, and the tubular pile structure has the double functions of bearing and dewatering well, thus greatly shortening the construction period and reducing the cost;
The invention adopts dry operation, has little environmental pollution, adopts steel pipes as the tubular pile, has regular appearance and high strength, is not easy to be damaged, does not need maintenance, and can shorten the total construction period;
And thirdly, the materials, the equipment, the construction equipment and the construction method related to the invention are relatively common, and the operation is convenient, thereby being beneficial to popularization.
Drawings
FIG. 1 is a schematic elevation section view of the present invention;
FIG. 2 is a structural profile view of the present invention;
FIG. 3 is a schematic view of the vertical section of the pile of the present invention in use as a support pile;
Fig. 4 is a schematic elevation sectional view showing the state of use of the present invention as a support pile.
In the figure: 1: soil body, 2: a closing plate, 3: submersible pump, 4: water filtration pore, 5: tubular pile, 6: sling, 7: drilling, 8: water pipe, 9: crown beam, 10: enclosing purlin, 11: structural body
Detailed Description
For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are to be considered in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
as shown in fig. 1, the embodiment discloses a pipe pile structure doubling as a dewatering well, which comprises a vertical pipe pile 5 arranged in a ground drilling hole 7, a submersible pump 3 arranged in the pipe pile 5 and accessories. Referring to fig. 1 and 2, a drill hole 7 is drilled in a soil body 1 on the ground according to a positioning drill, a tubular pile 5 is arranged in the drill hole 7, a sealing plate 2 is welded at the bottom of the tubular pile 5, a water filtering hole 4 is formed in the lower portion of the tubular pile 5, a submersible pump 3 is arranged in the tubular pile 5, the submersible pump 3 is suspended in the tubular pile 5 through a sling 6 fixed on a wellhead, and a water pipe 7 is connected to a water outlet of the submersible pump 3.
In the embodiment shown in fig. 3, the method of the invention is that the groundwater in the soil body 1 is converged into the pipe pile 5 as the dewatering well through the water filtering hole 4, the groundwater is discharged through the submersible pump 3 and the water pipe 7, thereby reducing the groundwater level; in the excavation process of the foundation pit, the tubular piles 5 and other piles form a row pile structure through the crown beams 9 and the surrounding purlins 10 to support the foundation pit.
In the embodiment shown in fig. 4, the method of the invention is that the groundwater in the soil body 1 is converged into the pipe pile 5 as the dewatering well through the water filtering hole 4, the groundwater is discharged through the submersible pump 3 and the water pipe 7, thereby reducing the groundwater level; in the process of constructing a structure, a structure 11 to be supported is connected to the pipe pile 5, and the pipe pile 5 supports the structure 11 as a support pile.
although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A tubular pile structure used as a dewatering well is characterized by comprising a vertical tubular pile arranged in a ground drilled hole, a submersible pump arranged in the tubular pile and accessories; wherein the content of the first and second substances,
The vertical tubular pile arranged in the ground drilling hole is used for bearing and also used as a dewatering well shaft;
The submersible pump and the accessories arranged in the tubular pile are used for pumping water converged into the tubular well to a designated ground drainage point and reducing the underground water level.
2. the tubular pile structure of claim 1, wherein the vertical steel tubular pile placed in the ground bore hole comprises a ground bore hole and a steel tubular pile, the ground bore hole is vertical, the bore hole diameter is greater than the outer diameter of the tubular pile by 20-60 mm, the bore hole depth exceeds the designed base, the bore hole depth exceeds the base depth and equals to the length of a submersible pump plus 1000-2000 mm plus the height of a filter material at the bottom of the well (if any), the vertical tubular pile adopts a welded steel tube or a seamless steel tube, the tubular pile is installed in the ground bore hole, the bottom surface of the tubular pile is welded with a sealing plate, the sealing plate adopts a steel plate, the bottom of the tubular pile is seated at the bottom of the bore hole, the tubular pile is provided with a water filtering hole below the base, the shape of the water filtering hole on the tubular pile is a circular hole or a vertical long hole, the diameter of the water filtering hole on the tubular pile is, the upper part of the tubular pile exceeds the ground or the structural plane of the part where the tubular pile is located by 100-500 mm.
3. The tubular pile structure of claim 1, wherein the submersible pump and the accessories arranged in the tubular pile comprise a submersible pump, a sling and a water pipe, the outer diameter of the submersible pump is smaller than the nominal diameter of a steel pipe used by the tubular pile by one grade or more, the pump lift of the submersible pump exceeds the height from the pump bottom to a water outlet pipe port by more than 1000mm, the upper part of the submersible pump is fixed to a well head by the sling, the bottom of the submersible pump is suspended, the suspended height of the bottom of the submersible pump is 500 mm-1000 mm away from the hole bottom or the top surface of a filter material, the sling adopts a steel wire rope, a hemp rope or a nylon rope, the water pipe adopts a steel pipe, a plastic pipe or a rubber pipe, the lower part of the water pipe is connected to a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562247.0A CN110552361A (en) | 2018-06-04 | 2018-06-04 | Pipe pile structure used as dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562247.0A CN110552361A (en) | 2018-06-04 | 2018-06-04 | Pipe pile structure used as dewatering well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110552361A true CN110552361A (en) | 2019-12-10 |
Family
ID=68735518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810562247.0A Pending CN110552361A (en) | 2018-06-04 | 2018-06-04 | Pipe pile structure used as dewatering well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552361A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338299A (en) * | 2021-06-21 | 2021-09-03 | 中铁十二局集团有限公司 | Pile well composite foundation pit supporting construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202440826U (en) * | 2012-03-13 | 2012-09-19 | 广东中城建设集团有限公司 | Waterproof system for high-water level basement foundation slabs |
| CN203222805U (en) * | 2013-05-03 | 2013-10-02 | 中建三局第二建设工程有限责任公司 | Internal-supporting type deep foundation pit latticed column well-point rainfall system |
| CN105178289A (en) * | 2015-10-10 | 2015-12-23 | 江西建工第二建筑有限责任公司 | Prefabricated downcast pipe pile in building foundation pit and use method thereof |
| CN205501991U (en) * | 2016-03-22 | 2016-08-24 | 上海岩土工程勘察设计研究院有限公司 | Prevent blockking up multi -functional precast tubular pile |
| CN106088123A (en) * | 2016-08-16 | 2016-11-09 | 中国建筑第七工程局有限公司 | A kind of sand geology steel tube well fall water level device and construction method thereof |
| CN208803479U (en) * | 2018-06-04 | 2019-04-30 | 中冶天工集团有限公司 | A kind of tube pile structure as dewatering well |
-
2018
- 2018-06-04 CN CN201810562247.0A patent/CN110552361A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202440826U (en) * | 2012-03-13 | 2012-09-19 | 广东中城建设集团有限公司 | Waterproof system for high-water level basement foundation slabs |
| CN203222805U (en) * | 2013-05-03 | 2013-10-02 | 中建三局第二建设工程有限责任公司 | Internal-supporting type deep foundation pit latticed column well-point rainfall system |
| CN105178289A (en) * | 2015-10-10 | 2015-12-23 | 江西建工第二建筑有限责任公司 | Prefabricated downcast pipe pile in building foundation pit and use method thereof |
| CN205501991U (en) * | 2016-03-22 | 2016-08-24 | 上海岩土工程勘察设计研究院有限公司 | Prevent blockking up multi -functional precast tubular pile |
| CN106088123A (en) * | 2016-08-16 | 2016-11-09 | 中国建筑第七工程局有限公司 | A kind of sand geology steel tube well fall water level device and construction method thereof |
| CN208803479U (en) * | 2018-06-04 | 2019-04-30 | 中冶天工集团有限公司 | A kind of tube pile structure as dewatering well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338299A (en) * | 2021-06-21 | 2021-09-03 | 中铁十二局集团有限公司 | Pile well composite foundation pit supporting construction method |
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| SE01 | Entry into force of request for substantive examination | ||
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