CN108277798A - Prestressing force shaped steel support pile and its construction method - Google Patents
Prestressing force shaped steel support pile and its construction method Download PDFInfo
- Publication number
- CN108277798A CN108277798A CN201810306868.2A CN201810306868A CN108277798A CN 108277798 A CN108277798 A CN 108277798A CN 201810306868 A CN201810306868 A CN 201810306868A CN 108277798 A CN108277798 A CN 108277798A
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- shaped steel
- pile
- prestressing force
- support pile
- construction
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 140
- 239000010959 steel Substances 0.000 title claims abstract description 140
- 238000010276 construction Methods 0.000 title claims abstract description 59
- 230000008093 supporting effect Effects 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000002689 soil Substances 0.000 claims description 12
- 238000009412 basement excavation Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 239000004035 construction material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a kind of prestressing force shaped steel support pile and its construction method, support pile includes at least one supporting construction, and the supporting construction includes the shaped steel that cross section is H-type；Along the length direction of the shaped steel, and it is fixedly installed casing on the outside of the shaped steel one side, steel strand wires are set in described sleeve pipe, billet sealing is additionally provided in the upper end of described sleeve pipe；The steel strand wires have fixing end and free end, the bottom Joint of the fixing end and described sleeve pipe；Anchorage is installed on the billet；The free end of the steel strand wires sequentially passes through the billet and anchorage stretches out outside described sleeve pipe.Shaped steel support pile stress is spread, and is obtained eccentric external force to reduce the lateral deformation of shaped steel supporting, is facilitated Structural Engineering to construct, it is not necessary to inner support or anchor pole be arranged to reduce lateral deformation, need not also anchor pole be arranged and destroy water stop curtain structure；After foundation pit backfills, then shaped steel and steel sheet pile recycling are extracted, can be recycled, energy conservation and environmental protection.
Description
Technical field
The invention belongs to building fields, more particularly to a kind of prestressing force shaped steel support pile and its construction method.
Background technology
Pattern foundation pit supporting structure is to ensure construction of underground structure construction and protection foundation pit safety of surrounding environment, branch being taken in foundation pit walls
Gear, the safeguard measure reinforced.It is each compared with deep or without slope condition pattern foundation pit supporting structure generally use when excavating in foundation pit supporting project
The supporting type of kind support pile.The pattern of support pile generally uses bored concrete pile, precast concrete pile, common shaped steel, steel plate at present
The supportings such as stake.
In some base pit engineerings, when soil lateral pressure is larger, support pile can be larger lateral to generating on the inside of foundation pit
Displacement, when support pile horizontal displacement results in the safety problems such as road cracking, pipeline failure to a certain extent.In order to reduce supporting
The horizontal displacement of stake needs to arrange that horizontal direction inner support is deformed to withstand support pile into foundation pit；Or the water of soil layer is squeezed into setting
Put down to anchor pole hold support pile to reduce the horizontal lateral displacement of support pile.
Usual base pit engineering belongs to temporary support structures, and then backfill is discarded after underground engineering construction.
For the supporting construction using bored concrete pile, precast concrete pile pattern, after foundation pit backfills, support pile is left in ground
It is discarded in lower soil layer, construction material wastes and forms underground obstacle very much.
For the pattern that the support pile of common shaped steel, steel sheet pile is combined with inner support, since foundation pit structure construction area has
The presence of intensive inner support rod piece reduces construction efficiency.In some engineerings, inner support is due to installation error or structure construction
When slight impact cause inner support to fail, deep pit monitor is affected；
For the pattern that the support pile of common shaped steel, steel sheet pile is combined with anchor pole, anchor pole stretches into the outer one segment length ability of soil layer in hole
Pulling force is provided, anchor pole usually is out land red-line and is unsatisfactory for urban construction prescribed requirement；In addition, being needed in steel when anchor bolt construction
Position trepanning is to be lost material among sheet pile；
Mixing pile construction method is inserted into for common shaped steel, mixing pile is acted on as water-stop curtain, and anchor pole is usually placed in two
Soil layer then is put in from mixing pile central bore among shaped steel, is destroyed the disadvantage is that part is caused to stir pile water stopping curtain.
Invention content
The technical problem to be solved by the present invention is to, one kind is provided after foundation pit backfills, then extracts shaped steel and steel sheet pile recycling,
It is Ke Xunhuanliyong, energy-saving and environment-friendly prestressing force shaped steel support pile.
In order to solve the above technical problems, the technical solution adopted by the present invention is, the prestressing force shaped steel support pile, include to
Few supporting construction, the supporting construction include the shaped steel that cross section is H-type；Along the length direction of the shaped steel, and position
Be fixedly installed casing on the outside of the shaped steel one side, steel strand wires be set in described sleeve pipe, the upper end of described sleeve pipe also
It is provided with billet sealing；The steel strand wires have fixing end and free end, the bottom of the fixing end and described sleeve pipe mutually solid
It connects；Anchorage is installed on the billet；The free end of the steel strand wires sequentially passes through described in the billet and anchorage stretching
Outside casing.
Prestressing force shaped steel support pile using the above structure, especially in the feelings using billet, anchorage and steel strand wires
Under condition so that shaped steel support pile stress is spread, and is obtained eccentric external force to reduce the lateral deformation of shaped steel supporting, is facilitated structure
Engineering construction, it is not necessary to inner support or anchor pole are set to reduce lateral deformation, need not anchor pole also be set and destroys water stop curtain structure；
After foundation pit backfills, then shaped steel and steel sheet pile recycling are extracted, can be recycled, energy conservation and environmental protection.
Preferably, on billet through the circular hole smaller on anchorage described in boring ratio；Stress is more advantageous to be spread.
The prestressing force shaped steel support pile further includes having steel plate pile body, and the steel plate pile body is by several continuously arranged supportings
Stake is constituted, and the tapered plane that the support pile is connected both sides by wide plane is constituted, and adjacent two support piles are connected by narrow plane
Together；The outside of the shaped steel another side constitutes supporting unit with the wide planar inner Joint of the support pile, adjacent
There is support pile between two supporting units.
Preferably, there are three supporting construction altogether for the prestressing force shaped steel support pile.
Preferably, which further includes having stirring pile body, and the supporting construction is inlaid in the stirring
In pile body.
Preferably, supporting construction equidistantly distributed in the mixing pile body.
The invention solves another technical problem be to provide a kind of construction method using prestressing force shaped steel support pile,
This approach includes the following steps：
（1）Use mixing pile for water-stop curtain, interpolation prestressing force shaped steel is as supporting construction, shaped steel length 12m：
（2）Positioning, opens mixing pile groove at unwrapping wire；
（3）Using mixing pile machine construction mixing pile；
（4）Prestressing force shaped steel is inserted into using vibration hammer in 6 hours after every secondary mixing pile construction；
（5）Start earth excavation after whole mixing piles and shaped steel supporting construction；
（6）First layer earth excavation starts construction shaped steel prestress wire tensioning and locks to 2m depths；
（7）Earth excavation to setting bottom of foundation ditch and start the construction of underground civil engineering structure；
（8）Underground Construction finishes and backfills underground external wall and the soil layer of supporting construction；
（9）Steel strand wires are cut off, the pre-applied force of shaped steel steel strand wires is discharged, remove prestressed anchor；
（10）Supporting shaped steel is transferred to by root using vibration hammer；
（11）The hole for extracting shaped steel fills i.e. completion prestressing force shaped steel support engineering using injection cement grout.
Description of the drawings
It is further described below in conjunction with the accompanying drawings with embodiments of the present invention：
Fig. 1 is the structural schematic diagram of prestressing force shaped steel support pile of the present invention；
Fig. 2 is the overlooking structure diagram of the shaped steel of Fig. 1；
Fig. 3 is the structural schematic diagram of the prestressing force shaped steel support pile of the embodiment of the present invention 1；
Fig. 4 is the stereogram of Fig. 3；
Fig. 5 is the structural schematic diagram of the prestressing force shaped steel support pile of the embodiment of the present invention 2；
Fig. 6 is the stereogram of Fig. 5；
Fig. 7 is the installation effect figure of the prestressing force shaped steel support pile in Fig. 1；
Wherein：1- supporting construction；2- shaped steel；3- casings；4- steel strand wires；401- fixing ends；The free ends 402-；5- billets；6-
Fixed steel pipe point；7- anchorages；8- steel plate pile bodies；801- support piles；802- wide planes；803- tapered planes；804- narrow planes；9- branch
Protect unit；10- stirs pile body.
Specific implementation mode
As shown in Figure 1, 2, it is the prestressing force shaped steel support pile of the present invention, includes at least one supporting construction 1, the branch
Protection structure includes the shaped steel 2 that cross section is H-type；Along the length direction of the shaped steel 2, and positioned at the outside of the shaped steel one side
It is fixedly installed casing 3, steel strand wires 4 are set in described sleeve pipe 3,5 envelope of billet is additionally provided in the upper end of described sleeve pipe 3
Mouthful；The steel strand wires 4 have fixing end 401 and free end 402, the bottom Joint of the fixing end 401 and described sleeve pipe 3,
I.e. at the position of fixed steel pipe point 6；Anchorage 7 is installed on the billet 5；It wears successively the free end 402 of the steel strand wires 4
It crosses the billet 5 and anchorage 7 stretches out outside described sleeve pipe 3, Fig. 7 is the installation effect figure of prestressing force shaped steel support pile, the steel
On backing plate 5 through the circular hole smaller on anchorage described in boring ratio 7.
In 2 outside processing and fabricating of shaped steel：2 bottom end of shaped steel is welded and fixed steel pipe, and diameter of steel tube 20mm ~ 50mm → along the shaped steel wing
Edge welds rectangle casing → sleeve bottom and makes loose-leaf → steel strand, and steel strand wires reserve 500mm or so length at top；Using
Shaped steel is inserted into soil layer set depth by vibration hammer；When foundation pit soil layer is excavated to 2.0m ~ 3.0m, shaped steel is under soil lateral pressure effect
Start to generate moderate finite deformation into foundation pit；Setting billet and anchorage at the top of shaped steel to reserving steel strand wires, with jack pair steel
Twisted wire tensioning simultaneously locks, and applies prestressing force to shaped steel, is equivalent to and applies eccentric force to shaped steel, there are one to the bias on the outside of foundation pit
Torque reduces shaped steel to the displacement on the inside of foundation pit；Continue to excavate soil layer to foundation pit setting absolute altitude.
It is the one such structure of prestressing force shaped steel support pile in the embodiment of the present invention 1, as shown in Figure 3,4, this is pre- to answer
Power shaped steel support pile further includes having steel plate pile body 8, and the steel plate pile body 8 is made of several continuously arranged support piles 801, institute
It states support pile 801 to be made of the tapered plane 803 of the connection of wide plane 802 both sides, adjacent two support piles 801 pass through narrow plane
804 link together；The outside of the shaped steel another side and the 802 inside Joint of wide plane of the support pile 801 constitute branch
Unit 9 is protected, has support pile 801 between adjacent two supporting units 9；In the present embodiment 1, the prestressing force shaped steel support pile is total
There are three supporting construction 1.
As different from Example 1, as shown in Figure 5,6, the prestressing force shaped steel support pile in embodiment 2 further includes having stirring
Pile body 10, is prestressing force shaped steel support pile another structure therein, and the supporting construction 1 is inlaid in the stirring pile body 10
It is interior, the equidistantly distributed in the stirring pile body 10 of the supporting construction 1.
The construction method of prestressing force shaped steel support pile in above-described embodiment 2, this approach includes the following steps：
（1）Use mixing pile for water-stop curtain, interpolation prestressing force shaped steel is as supporting construction, shaped steel length 12m：
（2）Positioning, opens mixing pile groove at unwrapping wire；
（3）Using mixing pile machine construction mixing pile；
（4）Prestressing force shaped steel is inserted into using vibration hammer in 6 hours after every secondary mixing pile construction；
（5）Start earth excavation after whole mixing piles and shaped steel supporting construction；
（6）First layer earth excavation starts construction shaped steel prestress wire tensioning and locks to 2m depths；
（7）Earth excavation to setting bottom of foundation ditch and start the construction of underground civil engineering structure；
（8）Underground Construction finishes and backfills underground external wall and the soil layer of supporting construction；
（9）Steel strand wires are cut off, the pre-applied force of shaped steel steel strand wires is discharged, remove prestressed anchor；
（10）Supporting shaped steel is transferred to by root using vibration hammer；
（11）The hole for extracting shaped steel fills i.e. completion prestressing force shaped steel support engineering using injection cement grout.
The basic principles and main features and advantage of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, such as dimensionally gives
Become larger or become smaller or material on change, these changes and improvements all fall within the protetion scope of the claimed invention.The present invention
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (7)
1. a kind of prestressing force shaped steel support pile, which is characterized in that include at least one supporting construction, the supporting construction includes
It is the shaped steel of H-type to have cross section；Along the length direction of the shaped steel, and set is fixedly installed on the outside of the shaped steel one side
It manages, steel strand wires is set in described sleeve pipe, billet sealing is additionally provided in the upper end of described sleeve pipe；The steel strand wires have solid
The bottom Joint of fixed end and free end, the fixing end and described sleeve pipe；Anchorage is installed on the billet；The steel twists
The free end of line sequentially passes through the billet and anchorage stretches out outside described sleeve pipe.
2. prestressing force shaped steel support pile according to claim 1, which is characterized in that penetrate boring ratio institute on the billet
State the circular hole smaller on anchorage.
3. prestressing force shaped steel support pile according to claim 1 or 2, which is characterized in that the prestressing force shaped steel support pile is also
Include steel plate pile body, the steel plate pile body is made of several continuously arranged support piles, and the support pile is connected by wide plane
The tapered plane for connecing both sides is constituted, and adjacent two support piles are linked together by narrow plane；The outside of the shaped steel another side
Supporting unit is constituted with the wide planar inner Joint of the support pile, has support pile between adjacent two supporting units.
4. prestressing force shaped steel support pile according to claim 3, which is characterized in that the prestressing force shaped steel support pile shares three
A supporting construction.
5. prestressing force shaped steel support pile according to claim 1 or 2, which is characterized in that the prestressing force shaped steel support pile is also
Include stirring pile body, the supporting construction is inlaid in the mixing pile body.
6. prestressing force shaped steel support pile according to claim 5, which is characterized in that the supporting construction is in the mixing pile
Internal equidistantly distributed.
7. a kind of construction method using prestressing force shaped steel support pile described in claim 1, this approach includes the following steps：
（1）Use mixing pile for water-stop curtain, interpolation prestressing force shaped steel is as supporting construction, shaped steel length 12m：
（2）Positioning, opens mixing pile groove at unwrapping wire；
（3）Using mixing pile machine construction mixing pile；
（4）Prestressing force shaped steel is inserted into using vibration hammer in 6 hours after every secondary mixing pile construction；
（5）Start earth excavation after whole mixing piles and shaped steel supporting construction；
（6）First layer earth excavation starts construction shaped steel prestress wire tensioning and locks to 2m depths；
（7）Earth excavation to setting bottom of foundation ditch and start the construction of underground civil engineering structure；
（8）Underground Construction finishes and backfills underground external wall and the soil layer of supporting construction；
（9）Steel strand wires are cut off, the pre-applied force of shaped steel steel strand wires is discharged, remove prestressed anchor；
（10）Supporting shaped steel is transferred to by root using vibration hammer；
（11）The hole for extracting shaped steel fills i.e. completion prestressing force shaped steel support engineering using injection cement grout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306868.2A CN108277798A (en) | 2018-04-08 | 2018-04-08 | Prestressing force shaped steel support pile and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306868.2A CN108277798A (en) | 2018-04-08 | 2018-04-08 | Prestressing force shaped steel support pile and its construction method |
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| Publication Number | Publication Date |
|---|---|
| CN108277798A true CN108277798A (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810306868.2A Pending CN108277798A (en) | 2018-04-08 | 2018-04-08 | Prestressing force shaped steel support pile and its construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469069A (en) * | 2018-11-27 | 2019-03-15 | 浙江坤德创新岩土工程有限公司 | A kind of I-shaped support pile of prestressing force and foundation pit supporting method |
| CN113550321A (en) * | 2021-06-28 | 2021-10-26 | 上海建工集团股份有限公司 | Prestressed PC construction method combined steel pipe pile foundation pit supporting structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002363977A (en) * | 2001-06-05 | 2002-12-18 | Giken Seisakusho Co Ltd | Pile and pile construction method |
| JP2012188923A (en) * | 2012-05-14 | 2012-10-04 | Nippon Steel Corp | Earth retaining wall reinforcing structure and method |
| CN103061346A (en) * | 2013-01-11 | 2013-04-24 | 东南大学 | Steel plate pile utilizing bolt connection and H-shaped combined foundation pit support structure |
| CN107023018A (en) * | 2016-02-02 | 2017-08-08 | 上海城地建设股份有限公司 | Can be recycled, built-up type all-steel foundation pit enclosure support system and its construction method |
| CN208088282U (en) * | 2018-04-08 | 2018-11-13 | 江苏地基工程有限公司 | Prestressing force shaped steel support pile |
-
2018
- 2018-04-08 CN CN201810306868.2A patent/CN108277798A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002363977A (en) * | 2001-06-05 | 2002-12-18 | Giken Seisakusho Co Ltd | Pile and pile construction method |
| JP2012188923A (en) * | 2012-05-14 | 2012-10-04 | Nippon Steel Corp | Earth retaining wall reinforcing structure and method |
| CN103061346A (en) * | 2013-01-11 | 2013-04-24 | 东南大学 | Steel plate pile utilizing bolt connection and H-shaped combined foundation pit support structure |
| CN107023018A (en) * | 2016-02-02 | 2017-08-08 | 上海城地建设股份有限公司 | Can be recycled, built-up type all-steel foundation pit enclosure support system and its construction method |
| CN208088282U (en) * | 2018-04-08 | 2018-11-13 | 江苏地基工程有限公司 | Prestressing force shaped steel support pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469069A (en) * | 2018-11-27 | 2019-03-15 | 浙江坤德创新岩土工程有限公司 | A kind of I-shaped support pile of prestressing force and foundation pit supporting method |
| CN113550321A (en) * | 2021-06-28 | 2021-10-26 | 上海建工集团股份有限公司 | Prestressed PC construction method combined steel pipe pile foundation pit supporting structure and construction method thereof |
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Application publication date: 20180713 |