CN112942373B - Foundation pit supporting structure and method - Google Patents
Foundation pit supporting structure and method Download PDFInfo
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- CN112942373B CN112942373B CN202110172854.8A CN202110172854A CN112942373B CN 112942373 B CN112942373 B CN 112942373B CN 202110172854 A CN202110172854 A CN 202110172854A CN 112942373 B CN112942373 B CN 112942373B
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- steel pipe
- steel
- pipe pile
- pile
- pipe
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 112
- 239000010959 steel Substances 0.000 claims abstract description 112
- 239000004575 stone Substances 0.000 claims description 13
- 239000002689 soil Substances 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000011799 hole material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Images
Classifications
-
- 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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- 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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- 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
- E02D5/74—Means for anchoring structural elements or bulkheads
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A foundation pit supporting structure and a foundation pit supporting method comprise a plurality of steel pipe piles which are sequentially arranged, and two groups of positioning steels which are arranged at intervals, wherein each steel pipe pile is arranged between two groups of positioning steels, C-shaped lock pipes and I-shaped steels are fixedly welded on two sides of each steel pipe pile, and the I-shaped steel on one steel pipe pile between every two adjacent steel pipe piles is inserted into the C-shaped lock pipe of the other steel pipe pile. The invention can support the foundation pit conveniently and quickly.
Description
Technical Field
The invention relates to a foundation pit supporting structure and a foundation pit supporting method.
Background
The Xiangpu residential channel is an auxiliary structure of a Huahai park station at No. 4 line of Fuzhou subway, traverses the south society, runs from south to north, is a Xiangpu residential garden building at the east side of the channel, is a building base of a manboat base at the west side of the channel, has the first-stage length of 26.35m, the width of an enclosure structure of 8.426m and the depth of a foundation pit of 5.504-6.0 m. Because the construction site is small, the construction period is short, and the normal life of surrounding residents cannot be influenced in the construction process, the problem of selecting a foundation pit supporting mode becomes a problem in the aspects of saving cost, saving time and the like in order to ensure that the project is completed quickly and efficiently.
Disclosure of Invention
The invention aims to provide a foundation pit supporting structure and a foundation pit supporting method, which can support a foundation pit conveniently and quickly.
In order to solve the above problems, the technical solution to be solved by the present invention is:
the utility model provides a foundation pit supporting structure, includes many steel-pipe piles that arrange the setting in proper order, still includes the location steel that two sets of intervals set up, and each steel-pipe pile sets up between two sets of location steel, at steel-pipe pile both sides welded fastening C type lock pipe and I-steel, and the I-steel inserts in another steel-pipe pile C type lock pipe on one of them steel-pipe pile between two adjacent steel-pipe piles.
A plurality of connecting plates are welded and fixed at one end of the steel pipe pile, one end of the steel pipe pile is surrounded by the connecting plates to form a socket, an upper steel pipe pile and a lower steel pipe pile are arranged between the upper steel pipe pile and the lower steel pipe pile, and the upper end of the lower steel pipe pile is inserted into the socket of the upper steel pipe pile.
And a plurality of neck plates are welded and fixed between the C-shaped lock pipe and the steel pipe pile.
A foundation pit supporting method comprises the following steps:
firstly, a first steel pipe pile is used as a positioning pile and is slowly driven into the ground, and the position and the perpendicularity of the first steel pipe pile are checked during driving;
secondly, welding and fixing two groups of positioning steel on two sides of the positioning pile to serve as the guide of the steel pipe pile at the middle section;
and thirdly, driving the rest lower sections of steel pipe piles into the two groups of positioning steel pipes, wherein the I-shaped steel on one steel pipe pile between every two adjacent steel pipe piles is required to be inserted into the C-shaped lock pipe of the other steel pipe pile.
And coating butter in the C-shaped lock tube.
In the process of driving the steel pipe pile, if the soil layer is obstructed by the boulder, the method comprises the following steps:
the first step is as follows: firstly, driving the steel pipe pile into the surface of the boulder, and cleaning soil in the steel pipe pile;
the second step: after the surface of the boulder is drilled, the shape of the inner surface of the steel pipe pile is measured by using a stone measuring device, and then the lower end of the supporting pipe is cut and polished according to the measured radian, so that the radian of the lower end of the supporting pipe corresponds to the shape of the surface of the boulder;
the third step: then coating sealant on the lower end pipe orifice of the support pipe, and adhering the support pipe on the boulder;
the third step: after the sealant is dried, the anchor rod is inserted into the boulder hole, cement or epoxy resin is poured into the boulder hole, and the anchor rod and the supporting tube are fixed together.
Survey stone device and include the ring canal, a plurality of measuring parts of fixedly connected with in the ring canal, the handheld pole that sets up the ring canal center connects pole and ring canal fixed connection through many, measuring part includes the sleeve pipe of fixed connection in the ring canal, and a plurality of rubber tubes of intraductal fixedly connected with of cover are equipped with the measuring stick in the rubber tube.
The beneficial effects of the invention are: the foundation pit is supported by the lock catch steel pipe piles, the construction process is convenient and quick, only a vibration hammer is used for hammering downwards at a fixed position, and the required construction period is short; the construction cost is low, and the steel pipe pile can be pulled out and recycled after construction; the support effect on the foundation pit is obvious, and the water stopping effect is good. The foundation pit supporting mode greatly reduces the construction period and cost and can better create benefits for projects; when encountering the boulder, the boulder can be used as a support to support the steel pipe pile, and the operation is convenient and fast.
Drawings
The invention is further described with reference to the accompanying drawings:
FIG. 1 is a schematic cross-sectional view of the present invention,
fig. 2 is a schematic top view of the steel pipe pile according to the present invention,
fig. 3 is a front view structural schematic diagram of the steel pipe pile of the present invention,
figure 4 is a schematic top view of the retaining structure of the foundation pit of the present invention,
FIG. 5 is a schematic cross-sectional view of a stone measuring apparatus according to the present invention,
fig. 6 is a schematic top view of the stone measuring apparatus according to the present invention.
In the figure: c-shaped lock pipe 1, steel pipe pile 2, I-steel 3, stone measuring device 4, boulder 5, anchor rod 6, support pipe 7, connecting plate 8, positioning steel 9, ring pipe 41, sleeve pipe 42, measuring rod 43, rubber tube 44, handheld rod 45 and connecting rod 46.
Detailed Description
As shown in fig. 1 to 4, a foundation pit supporting structure comprises a plurality of steel pipe piles 2 arranged in sequence, and further comprises two groups of positioning steels 9 arranged at intervals, wherein the positioning steels 9 are square steels, angle steels or i-shaped steels 3, each steel pipe pile 2 is arranged between the two groups of positioning steels 9, the two sides of each steel pipe pile 2 are fixedly welded with a C-shaped lock pipe 1 and the i-shaped steels 3, and the i-shaped steel 3 on one steel pipe pile 2 between two adjacent steel pipe piles 2 is inserted into the other steel pipe pile 2C-shaped lock pipe 1.
The method for supporting the foundation pit by using the foundation pit supporting structure comprises the following steps:
before implementation, firstly, according to the characteristics of stratum and field, measuring lofting is carried out, and then the position of each pile is determined according to the measuring lofting to manufacture the positioning steel 9.
Firstly, using a 90-type vibration hammer to beat a first steel pipe pile 2 as a positioning pile, slowly striking the positioning pile into the ground, and checking the position and the verticality of the positioning pile during striking;
secondly, welding and fixing two groups of positioning steel on two sides of the positioning pile to serve as the guide of the steel pipe pile 2 at the middle section;
and thirdly, driving the remaining lower steel pipe piles 2 into the two groups of positioning steel, and requiring that the I-shaped steel 3 on one steel pipe pile 2 between two adjacent steel pipe piles 2 is inserted into the C-shaped lock pipe 1 of the other steel pipe pile 2.
From this each steel-pipe pile 2 links up mutually in proper order, connects into whole, makes it form stable in structure's foundation ditch supporting structure.
Grease is coated in the C-shaped lock tube 1. Convenient water stop and frictional resistance between the I-steel 3 and the C-shaped lock pipe 1
A plurality of connecting plates 8 are welded and fixed at one end of the steel pipe pile 2, a socket is formed by the plurality of connecting plates 8 at one end of the steel pipe pile 2, the upper end of the lower steel pipe pile 2 is inserted into the socket of the upper steel pipe pile 2 between the upper steel pipe pile 2 and the lower steel pipe pile 2. When 2 length of single steel-pipe pile are not enough, can adopt above-mentioned socket joint structure to dock two steel-pipe piles 2, it is swift convenient to make.
And a plurality of neck plates are welded and fixed between the C-shaped lock pipe 1 and the steel pipe pile 2. The strength of the C-shaped lock tube 1 is improved.
In the process of driving the steel pipe pile 2, if the soil layer is obstructed by the boulder 5, the operation is carried out according to the following steps:
the first step is as follows: firstly, driving the steel pipe pile 2 into the surface of the boulder 5, and cleaning soil in the steel pipe pile 2;
the second step: after the surface of the boulder 5 is drilled, further washing soil in the boulder 5 and the steel pipe pile 2, after washing is finished, draining water in the drilled hole, drying the drilled hole and the water in the steel pipe pile 2 by using an air pipe, measuring the shape of the inner surface of the steel pipe pile 2 by using a stone measuring device 4, and then cutting and polishing the lower end of the supporting pipe 7 by using an air cutting and angle grinding machine according to the measured radian so that the radian of the lower end of the supporting pipe 7 corresponds to the shape of the surface of the boulder 5;
the third step: then, after sealant is coated on the lower end pipe orifice of the support pipe 7, the support pipe 7 is adhered to the boulder 5;
the third step: treat sealed glue dry back, insert 5 downtheholely of boulder with stock 6 to 5 downthehole cement or the epoxy of pouring into of boulder, fix stock 6 and stay tube 7 together, because paint sealed glue between 7 lower extremes of stay tube and the boulder 5, consequently can effectually prevent that cement or epoxy from leaking the thick liquid, enlarge the contact surface of stay tube 7 and boulder 5 simultaneously, improve the fixed effect of stay tube 7.
Through above-mentioned structure, stay tube 7 and stock 6 can make a bearing structure who is applicable to steel-pipe pile 2 and fixes on boulder 5, and the broken stone of blasting is compared, can not bring adverse effect to peripheral building.
As shown in fig. 5 and 6, the stone measuring device 4 includes a ring pipe 41, a plurality of measuring parts are fixedly connected in the ring pipe 41, a hand-held rod 45 provided at the center of the ring pipe 41 is fixedly connected with the ring pipe 41 through a plurality of extension rods 46, the measuring parts include a sleeve 42 fixedly connected in the ring pipe 41, a plurality of rubber tubes 44 are fixedly connected in the sleeve 42, a measuring rod 43 is provided in the rubber tube 44, and the rubber tubes 44 are used for providing damping for the measuring rod 43 and preventing the measuring rod from falling down due to self weight.
The using method of the stone measuring device 4 comprises the following steps: with each measuring stick 43 lower extreme parallel and level, then will survey stone device 4 and insert in steel-pipe pile 2 again, let each measuring stick 43 lower extreme support lean on boulder 5 surface, under the damping of rubber tube 44, will survey stone device 4 again and take out the back from steel-pipe pile 2, each measuring stick 43 lower extreme shape is corresponding with boulder 5 surface shape, and the staff cuts the lower extreme of stay tube 7 according to the shape and polishes.
Claims (5)
1. The utility model provides a foundation pit supporting method, includes the excavation supporting structure, excavation supporting structure includes many steel-pipe pile (2) of arranging the setting in proper order, still includes positioning steel (9) that two sets of intervals set up, and each steel-pipe pile (2) set up between two sets of positioning steel (9), its characterized in that: c-shaped lock pipes (1) and I-shaped steel (3) are fixedly welded on two sides of the steel pipe piles (2), and the I-shaped steel (3) on one steel pipe pile (2) between two adjacent steel pipe piles (2) is inserted into the C-shaped lock pipe (1) of the other steel pipe pile (2);
the method for supporting the foundation pit by using the foundation pit supporting structure comprises the following steps:
firstly, taking a first steel pipe pile (2) as a positioning pile, slowly driving the positioning pile into the ground, and checking the position and the verticality of the positioning pile during driving;
secondly, welding and fixing two groups of positioning steel on two sides of the positioning pile to serve as guidance of the steel pipe pile (2) at the middle section;
thirdly, driving the remaining lower steel pipe piles (2) into the two groups of positioning steel, and requiring that the I-shaped steel (3) on one steel pipe pile (2) between two adjacent steel pipe piles (2) is inserted into the C-shaped lock pipe (1) of the other steel pipe pile (2);
in the process of driving the steel pipe pile (2), if an boulder (5) is obstructed in a soil layer, the method comprises the following steps:
the first step is as follows: firstly, driving the steel pipe pile (2) into the surface of the boulder (5), and cleaning soil in the steel pipe pile (2);
the second step: after the surface of the boulder (5) is drilled, the shape of the inner surface of the steel pipe pile (2) is measured by using a stone measuring device (4), and then the lower end of the supporting pipe (7) is cut and polished according to the measuring radian, so that the radian of the lower end of the supporting pipe (7) corresponds to the shape of the surface of the boulder (5);
the third step: then, after sealant is coated on the lower end pipe orifice of the supporting pipe (7), the supporting pipe (7) is adhered to the boulder (5);
the third step: after the sealant is dried, the anchor rod (6) is inserted into the hole of the boulder (5), cement or epoxy resin is poured into the hole of the boulder (5), and the anchor rod (6) and the supporting tube (7) are fixed together.
2. A method of retaining and protecting a foundation pit as claimed in claim 1, wherein: a plurality of connecting plates are welded and fixed at one end of the steel pipe pile (2), one end of the steel pipe pile (2) is surrounded by the connecting plates to form a socket, the upper end and the lower end of the steel pipe pile (2) are arranged between the upper steel pipe pile and the lower steel pipe pile, and the upper end of the lower steel pipe pile (2) is inserted into the socket of the upper steel pipe pile (2).
3. A method of retaining and protecting a foundation pit as claimed in claim 1 or claim 2, wherein: a plurality of neck-added plates are welded and fixed between the C-shaped lock pipe (1) and the steel pipe pile (2).
4. A method of retaining and protecting a foundation pit as claimed in claim 1, wherein: grease is coated in the C-shaped lock tube (1).
5. A method of retaining and protecting a foundation pit as claimed in claim 1, wherein: survey stone device (4) including ring pipe (41), a plurality of measuring parts of fixedly connected with in ring pipe (41), handheld pole (45) that set up ring pipe (41) center connect pole (46) and ring pipe (41) fixed connection through many, measuring part is equipped with measuring stick (43) including sleeve pipe (42) of fixed connection in ring pipe (41), a plurality of rubber tubes (44) of fixedly connected with in sleeve pipe (42) in rubber tube (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110172854.8A CN112942373B (en) | 2021-02-08 | 2021-02-08 | Foundation pit supporting structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110172854.8A CN112942373B (en) | 2021-02-08 | 2021-02-08 | Foundation pit supporting structure and method |
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| Publication Number | Publication Date |
|---|---|
| CN112942373A CN112942373A (en) | 2021-06-11 |
| CN112942373B true CN112942373B (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110172854.8A Active CN112942373B (en) | 2021-02-08 | 2021-02-08 | Foundation pit supporting structure and method |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3629474B2 (en) * | 2002-05-10 | 2005-03-16 | 株式会社データ・トゥ | Steel pipe sheet pile method |
| CN101886396B (en) * | 2010-07-09 | 2011-08-24 | 中铁十局集团有限公司 | Construction method for special-shaped steel cofferdam |
| CN101985836B (en) * | 2010-09-10 | 2012-03-28 | 广东省基础工程公司 | Processing method of pile-wall type deep base pit supporting structure in case of encountering large boulder stone |
| CN102134853A (en) * | 2011-02-22 | 2011-07-27 | 北京城建道桥建设集团有限公司 | CT sealed steel pipe pile foundation pit water stop supporting device and construction method thereof |
| CN102966111B (en) * | 2012-12-13 | 2016-01-27 | 中铁上海工程局集团第二工程有限公司 | A kind of steel pipe pile anchoring construction method in deep water torrent intectate steep bare rock |
| KR101618801B1 (en) * | 2015-11-13 | 2016-05-09 | (주)삼일이엔씨 | Driven steel pile and construction method thereof |
| CN109989405A (en) * | 2017-12-30 | 2019-07-09 | 广州协安建设工程有限公司 | Base pit stand construction under boulder site condition |
| CN111720051B (en) * | 2020-06-28 | 2021-07-27 | 浙大城市学院 | Construction method of bored pile for complex inclined rock and boulder geology |
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2021
- 2021-02-08 CN CN202110172854.8A patent/CN112942373B/en active Active
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| CN112942373A (en) | 2021-06-11 |
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Address after: No.8, unit 1, building 1, No.57, community main street, Xinglong Town, Tianfu New District, Chengdu, Sichuan 610200 Patentee after: CCCC Second Harbor Engineering Co.,Ltd. (Chengdu) Address before: Chengdu urban construction company of CCCC second navigation bureau, 31 / F, CCCC International Center, 969 Hanzhou Road, Tianfu New District, Chengdu, Sichuan 610000 Patentee before: CCCC SHEC CHENGDU URBAN CONSTRUCTION ENGINEERING CO.,LTD. |
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