CN109914421A - A kind of side slope reinforcement of foundation pit recyclable mini pile steel pipe and its construction method - Google Patents
A kind of side slope reinforcement of foundation pit recyclable mini pile steel pipe and its construction method Download PDFInfo
- Publication number
- CN109914421A CN109914421A CN201910156793.9A CN201910156793A CN109914421A CN 109914421 A CN109914421 A CN 109914421A CN 201910156793 A CN201910156793 A CN 201910156793A CN 109914421 A CN109914421 A CN 109914421A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- mini pile
- pile
- foundation pit
- recyclable
- 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
Links
Abstract
Mini pile steel pipe both ends used in the present invention have bolt hole, according to foundation pit mini pile projected depth, different steel pipes is mutually connected to each other by head and the tail, and bolt is inserted into bolt hole and is tightened, the steel pipe to link together is packaged into blend compounds band with outsourcing waterproof geotextiles and is twined.It then will be in steel pipe tripping in hole by hanging ring with loop wheel machine, and steel pipe is kept to occupy hole center, then rubble and slip casting are backfilled in the apertura lateralis of the steel pipe wrapped up by waterproof geotextiles, since steel pipe periphery is wound with waterproof geotextiles, it keeps apart steel pipe and rubble cement slurry, after finishing to foundation pit backfill, is up pulled out with small-size vibrating-type pile-drawing machine by the hanging ring of steel pipe one end, and constantly demounting bolt can slowly pull out steel pipe, to achieve the purpose that recycle mini pile steel pipe.This method principle is simple, and the next building site of the steel pipe pulled out may be reused, to save project cost cost, small vibrating pile-drawing machine is of less demanding to construction site, strong operability.
Description
Technical field
The invention belongs to building foundation technical fields, and in particular to a kind of recyclable mini pile of side slope reinforcement of foundation pit
Steel pipe and its construction method.
Background technique
Recently as the rapid development of China's urban construction, skyscraper is increasing, and excavation of foundation pit depth is big, foundation pit
Quantity is also being increasing, and traditional mini pile compound soil nail support technology has in foundation pit supporting widely in China
Application, but steel pipe price used is relatively high in mini pile, and steel pipe dosage is bigger in pattern foundation pit supporting structure, has backfilled in foundation pit
Steel pipe price used is relatively high in mini pile after finishing, and steel pipe dosage is bigger, used in mini pile after foundation pit backfill
Steel pipe not can be carried out recycling to causing serious waste.
About the recycling of stake, certain methods and measure are proposed in the prior art, specifically such as Chinese patent literature CN
101538857 A disclose a kind of construction method of pile pulling, using jetting pore-forming by be embedded in underground tubular pole and its around
The soil body is kept apart under water jetting at high pressure impact, so that the cohesive force of tubular pole and its surrounding soil is made to be greatly lowered or eliminate,
And then pile pulling construction is made to become easy, this method is easy to operate, and securely and reliably, work efficiency is high, but due to miniature
It around steel pipe is cement slurry induration in stake, it is clear that this method is not suitable for the pile pulling of the mini pile steel pipe of gravel slip-casting
Method.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems of the prior art, a kind of side slope reinforcement of foundation pit is provided with can
Recycle mini pile steel pipe and its construction method.
To achieve the above object, the present invention adopts the following technical scheme: a kind of recyclable mini pile of side slope reinforcement of foundation pit
Steel pipe, the mini pile steel pipe are mutually inserted by several short steel pipes.
One end of the short steel pipes is set as tip side, and the other end is set as insertion end, and the outer diameter of the tip side is small
In the internal diameter for being equal to insertion end, at least one bolt hole is provided in tip side and insertion end.
At least one rib slot is provided on short steel pipes outer surface.
A kind of side slope reinforcement of foundation pit recyclable mini pile, including mini pile steel pipe are provided at the top of mini pile steel pipe
The short steel pipes lower end of hanging ring, mini pile steel pipe bottom is set as sealing structure, is wrapped with waterproof geotechnique in micro-column steel pipe
Cloth backfills rubble and slip casting outside waterproof geotextiles in miniature stake holes, to form side slope reinforcement of foundation pit with recyclable mini pile.
A kind of construction method of the recyclable mini pile steel pipe of side slope reinforcement of foundation pit, comprising the following steps: (1) short by one
The tip side of steel pipe is inserted into the insertion end of another short steel pipes, and the bolt hole of tip side and the bolt hole of insertion end are mutually right
It answers, then bolt is inserted into bolt hole and is tightened, successively short steel pipes link together section by section；(2) use waterproof geotextiles will
The steel pipe to link together is up covered from bottom, will be wound outside the waterproof geotextiles packaged with adhesive tape；(3) when mini pile drills
After construction, with loop wheel machine then rubble is poured into simultaneously in the steel pipe tripping in hole for winding waterproof geotextiles in hole by hanging ring
Slip casting；(4) it finishes and behind smooth good place after foundation pit construction backfill, is up extracted steel pipe by hanging ring with pile-drawing machine, when the
After one short steel pipes connector and rib slot basset, rib slot is blocked with pipe wrench, the bolt in bolt hole is then unscrewed into extraction, is made
Two short steel pipes separation, so that the recycling of that section short steel pipes topmost is realized, then by the spiral shell of pile-drawing machine and next section short steel pipes
Keyhole is connected, and repeats the above process the recycling for realizing remaining short steel pipes.
The pile-drawing machine uses small vibrating pile-drawing machine.
The beneficial effects of the present invention are: since mini pile steel pipe is mainly the effect of bending resistance in side slope reinforcement of foundation pit,
Tension resistance uplift effect is unobvious, and the present invention keeps apart steel pipe and cement slurry in steel pipe periphery winding waterproof geotextiles, subtracts
Less or cohesive force between cement slurry and steel pipe is eliminated, so as to pull out steel pipe；The recovery method principle is simple, pulls out
The next building site of steel pipe out can successively be reused, so that project cost cost is saved, small vibrating pile-drawing machine pair
Construction site is of less demanding, strong operability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mini pile steel pipe of the invention.
Fig. 2 is that mini pile is put into schematic diagram in hole.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
As shown in Figure 1, the present invention provides a kind of side slope reinforcement of foundation pit recyclable mini pile steel pipe, if mini pile steel pipe by
Dry short steel pipes are mutually inserted, and an end of short steel pipes 1 is set as tip side 2, and the other end is set as insertion end 3, tip side 2
Outer diameter be less than or equal to the internal diameter of insertion end 3, be provided at least one bolt hole 4, short steel pipes 1 in tip side 2 and insertion end 3
At least one rib slot 5 is provided on outer surface.
Hanging ring 6 is provided at the top of mini pile steel pipe, the short steel pipes lower end of mini pile steel pipe bottom is set as sealing knot
Structure is wrapped with waterproof geotextiles 7 in micro-column steel pipe, backfills rubble in miniature stake holes outside waterproof geotextiles 7 and injects water
Cement mortar 8, to form side slope reinforcement of foundation pit with recyclable mini pile.
As shown in Fig. 2, construction method of the side slope reinforcement of foundation pit with recyclable mini pile steel pipe, comprising the following steps: (1) will
The tip side 2 of one short steel pipes 1 is inserted into the insertion end 3 of another short steel pipes, the bolt hole 4 of tip side 2 and the spiral shell of insertion end 3
Keyhole 4 corresponds to each other, and then bolt is inserted into bolt hole 4 and is tightened, successively short steel pipes 1 link together section by section；(2) it uses
Waterproof geotextiles 7 up cover the steel pipe to link together from bottom, will be wound outside the waterproof geotextiles 7 packaged with adhesive tape；
(3) after mini pile drilling construction, with loop wheel machine by hanging ring 6 by wind waterproof geotextiles steel pipe tripping in hole in, then
Rubble is poured into hole and injects cement mortar 8；(4) it is finished and behind smooth good place after foundation pit construction backfill, uses small vibrating
Pile-drawing machine is up extracted steel pipe by hanging ring 6, after the tip side 2 and rib slot 5 of first short steel pipes basset, uses pipe wrench
Rib slot 5 is blocked, to prevent the steel pipe in disassembly process from falling into hole, the bolt in bolt hole 4 is then unscrewed into extraction, makes two
Short steel pipes 1 separate, so that the recycling of that section short steel pipes 1 topmost is realized, then by the bolt of pile-drawing machine and next section short steel pipes 1
Hole 4 is connected, and steel pipe has loosened at this time, so steel pipe easily can be extracted up, repeats the above process the remaining short steel pipes of realization
Recycling.
The recovery method principle is simple, and the next building site of the steel pipe pulled out can successively be reused, to save
Project cost cost, strong operability of less demanding to construction site.
The above be the preferred embodiment of the present invention, it is noted that if mini pile steel pipe of the present invention why by
Dry short steel pipes are mutually inserted, mainly easy for construction in view of being recycled section by section with small vibrating pile-drawing machine, on construction ground
With loop wheel machine it is easy to use in the case where, a root long steel pipe can also be used in mini pile steel pipe of the present invention, therefore for this field
Technical staff for, the present invention is not limited to the above embodiments, under the premise of not departing from general idea of the present invention, may be used also
To make several changes and improvements, these also should be considered as protection scope of the present invention.
Claims (6)
1. a kind of recyclable mini pile steel pipe of side slope reinforcement of foundation pit, it is characterised in that: the mini pile steel pipe is by several short steel
Pipe is mutually inserted.
2. the recyclable mini pile steel pipe of side slope reinforcement of foundation pit as described in claim 1, it is characterised in that: the short steel pipes
One end is set as tip side, and the other end is set as insertion end, and the outer diameter of the tip side is less than or equal to the internal diameter of insertion end, connects
At least one bolt hole is provided in head end and insertion end.
3. the recyclable mini pile steel pipe of side slope reinforcement of foundation pit as described in claim 1, it is characterised in that: short steel pipes outer surface
On be provided at least one rib slot.
4. a kind of side slope reinforcement of foundation pit recyclable mini pile, including mini pile steel pipe, it is characterised in that: the top of mini pile steel pipe
Portion is provided with hanging ring, and the short steel pipes lower end of mini pile steel pipe bottom is set as sealing structure, is wrapped in micro-column steel pipe
Waterproof geotextiles backfill rubble and slip casting outside waterproof geotextiles in miniature stake holes, to form side slope reinforcement of foundation pit with can return
Receive mini pile.
5. a kind of pit foundation slope reinforcement construction method of recyclable mini pile steel pipe, it is characterised in that: the following steps are included:
(1) tip side of a short steel pipes is inserted into the insertion end of another short steel pipes, the bolt hole of tip side and the spiral shell of insertion end
Keyhole corresponds to each other, and then bolt is inserted into bolt hole and is tightened, successively short steel pipes link together section by section；(2) with anti-
Water geotextiles up cover the steel pipe to link together from bottom, will be wound outside the waterproof geotextiles packaged with adhesive tape；(3) when
After mini pile drilling construction, with loop wheel machine by hanging ring by wind waterproof geotextiles steel pipe tripping in hole in, then in hole
Pour into rubble and slip casting；(4) finished and behind smooth good place after foundation pit construction backfill, with pile-drawing machine by hanging ring by steel pipe up
It extracts, after first short steel pipes connector and rib slot basset, blocks rib slot with pipe wrench, then twist the bolt in bolt hole
Pine is extracted, and two short steel pipes separation are made, thus realize the recycling of that section short steel pipes topmost, it is then that pile-drawing machine and next section is short
The bolt hole of steel pipe is connected, and repeats the above process the recycling for realizing remaining short steel pipes.
6. the side slope reinforcement of foundation pit as claimed in claim 5 construction method of recyclable mini pile steel pipe, it is characterised in that: institute
Pile-drawing machine is stated using small vibrating pile-drawing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910156793.9A CN109914421A (en) | 2019-03-01 | 2019-03-01 | A kind of side slope reinforcement of foundation pit recyclable mini pile steel pipe and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910156793.9A CN109914421A (en) | 2019-03-01 | 2019-03-01 | A kind of side slope reinforcement of foundation pit recyclable mini pile steel pipe and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109914421A true CN109914421A (en) | 2019-06-21 |
Family
ID=66962983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910156793.9A Pending CN109914421A (en) | 2019-03-01 | 2019-03-01 | A kind of side slope reinforcement of foundation pit recyclable mini pile steel pipe and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109914421A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597903A (en) * | 2009-07-14 | 2009-12-09 | 武汉市政工程设计研究院有限责任公司 | A kind of construction method of cylindrical slurry core pile that is used for pattern foundation pit supporting structure |
| CN101597904A (en) * | 2009-07-03 | 2009-12-09 | 东南大学 | A kind of splash guard pile cofferdam and job practices thereof |
| CN202227334U (en) * | 2011-10-09 | 2012-05-23 | 中建七局第三建筑有限公司 | Socket type steel pipe pile joint |
| CN203145569U (en) * | 2013-01-31 | 2013-08-21 | 于茂震 | Fence pile |
| CN104508210A (en) * | 2012-11-21 | 2015-04-08 | 新日铁住金株式会社 | Joint structure for steel-pipe pile, and steel-pipe pile |
| CN108468337A (en) * | 2018-05-02 | 2018-08-31 | 南昌大学 | A kind of recoverable foundation pit supporting pile and attaching/detaching apparatus and application method |
-
2019
- 2019-03-01 CN CN201910156793.9A patent/CN109914421A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597904A (en) * | 2009-07-03 | 2009-12-09 | 东南大学 | A kind of splash guard pile cofferdam and job practices thereof |
| CN101597903A (en) * | 2009-07-14 | 2009-12-09 | 武汉市政工程设计研究院有限责任公司 | A kind of construction method of cylindrical slurry core pile that is used for pattern foundation pit supporting structure |
| CN202227334U (en) * | 2011-10-09 | 2012-05-23 | 中建七局第三建筑有限公司 | Socket type steel pipe pile joint |
| CN104508210A (en) * | 2012-11-21 | 2015-04-08 | 新日铁住金株式会社 | Joint structure for steel-pipe pile, and steel-pipe pile |
| CN203145569U (en) * | 2013-01-31 | 2013-08-21 | 于茂震 | Fence pile |
| CN108468337A (en) * | 2018-05-02 | 2018-08-31 | 南昌大学 | A kind of recoverable foundation pit supporting pile and attaching/detaching apparatus and application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203080518U (en) | Self-drilling type recoverable anchor wire | |
| CN103993598B (en) | One is drawn hole and is implanted cloth bag crushed stone grouting pile and construction method | |
| CN203514303U (en) | Post-grouting enlarged-toe uplift micropile | |
| CN101812843A (en) | Centre grouted poured post-grouting pile construction methods, and grouter and grout injector used thereby | |
| CN106284327A (en) | The construction method that formed steel construction in cement mixing method and micro-disturbance thereof are pulled out | |
| CN102330436B (en) | Composite retaining structure and composite retaining method for half geotechnical layer ultradeep round spiral flow tank | |
| CN106703044A (en) | Flow-plastic-shaped flushing and filling soil weak stratum sloping combination support method | |
| CN107178100A (en) | A kind of soft soil foundation basement anti-floating system and its construction technology | |
| CN102191772A (en) | Prefabricated reaming pile and construction method thereof | |
| CN110685272B (en) | Method for treating soft foundation settlement overrun by utilizing inclined-hole cloth bag pile | |
| CN201835276U (en) | Prefabricated reaming pile | |
| CN201605590U (en) | Soft soil foundation pit soil nail supporting structure | |
| CN205171547U (en) | Recoverable miniature stock wall | |
| CN106836217A (en) | A kind of construction method of expansion end formula soil bolt or soil nailing | |
| CN202644591U (en) | A reinforced bridge pile foundation in tunnel construction under the geological condition of water-rich quicksand | |
| CN206971225U (en) | Filling pile's after grouting device | |
| CN101793032A (en) | Construction method of deep foundation ditch on small place | |
| CN109914421A (en) | A kind of side slope reinforcement of foundation pit recyclable mini pile steel pipe and its construction method | |
| CN101793027A (en) | Core-grouted static pressure anchor rod pile | |
| CN111779022A (en) | Novel structure of underground comprehensive pipe gallery in anti-settling and anti-inclining soft soil foundation and construction method thereof | |
| CN1051349C (en) | Pile head grouting and supersonic detecting combined process for filling long pile in saturated soil | |
| CN110117959A (en) | One kind closing on rivers base pit stand construction | |
| CN201635072U (en) | Centrally grouted static-pressured anchor pile former | |
| CN204326061U (en) | A kind of pile tube be drawn out easily | |
| CN203866821U (en) | Lead hole implant cloth bag gravel grouting pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190621 |
|
| RJ01 | Rejection of invention patent application after publication |