CN104314072B - A kind of construction method of special-shaped in situ concrete pile - Google Patents
A kind of construction method of special-shaped in situ concrete pile Download PDFInfo
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- CN104314072B CN104314072B CN201410586983.1A CN201410586983A CN104314072B CN 104314072 B CN104314072 B CN 104314072B CN 201410586983 A CN201410586983 A CN 201410586983A CN 104314072 B CN104314072 B CN 104314072B
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses the construction method of a kind of special-shaped in situ concrete pile, including: special-shaped pile pipe is installed；Lay pile top vibration sinking tube, control last two minutes pile penetrations；Transferring steel reinforcement cage, steel reinforcement cage vertically, lay between two parties, controls location absolute altitude deviation；Concrete perfusion, concrete controls the slump of concrete；Vibration pipe-drawing, by vibration and tube drawing with the use of, strict control pipe-pulling speed and height, and check the height of pipe inner concrete；Pile maintenance, after pile pipe is extracted, according to care environments, selects corresponding maintenance method；Wherein, the special-shaped pile pipe used is different from traditional cylinder pile pipe.The present invention uses design have the pile pipe of profiled-cross-section, prepare concrete-pile by cast-in-place perfusion, decrease material usage, reduce production cost.Meanwhile, the present invention, by the Cross section Design to special-shaped in situ concrete pile, improves the intensity of concrete-pile.
Description
Technical field
The present invention relates to the construction method of a kind of special-shaped in situ concrete pile.
Background technology
In the future development of pile foundation, along with high-rise, super high rise building and Large bridge foundation of main pylon etc.
Carrying needs, and stake footpath is increasing, and stake is long more and more longer；As a example by pouring material, pile shaft material kind has
Normal concrete, Superfluid state concrete, non-fine concrete, fiber concrete, self-leveling concrete and
Slightly expanded concrete etc.；Develop different the most in a large number to improve bearing capacity of single pile or Bearing Capacity Per Volume of Bored-cast
Type stake；Improve bearing capacity and save the two principal themes that material is the development of current piling Technology, relating to
The various fields of foundation industry.In the case of guaranteeing construction quality and safety, save material usage
It is the demand complying with society energy-conserving and environment-protective, and shaped pile can also be able to carry while saving material usage
High-bearing capacity, reaches the social need of energy efficiency, is divided into cast-in-place and prefabricated two for cross section shaped pile
Big class, special-shaped precast pile by mould, yield, transport, lift, the factor such as arrangement of reinforcement limits it and uses model
Enclose, and cast-in-place concrete shaped pile, only by the abnormal shapeization realizing stake of construction equipment, it is easy to promote
Application.
Summary of the invention
The present invention has designed and developed the construction method of a kind of special-shaped in situ concrete pile.The present invention uses and sets
Meter has the pile pipe of profiled-cross-section, prepares concrete-pile by cast-in-place perfusion, decreases material usage, fall
Low production cost.Meanwhile, the present invention, by the Cross section Design to special-shaped in situ concrete pile, improves mixed
The intensity of solidifying soil stake.
The technical scheme that the present invention provides is:
A kind of construction method of special-shaped in situ concrete pile, including:
Step 1), measure the hole depth of stake holes, determine the riding position of special-shaped pile pipe, by the placement of abnormal shape pile pipe
In stake holes；
Step 2), step 1) in complete the installation of special-shaped pile pipe after, the position of the special-shaped pile pipe of verification, protect
The perpendicularity of the special-shaped pile pipe of card, the pile top that will lay is placed in special-shaped pile pipe, and ensures hanging down of pile top
Straight degree, the top of pile top is provided with localizer；
Step 3), step 2) in complete the laying of pile top after, the special-shaped pile pipe of vibration, control last two points
The pile penetration of clock abnormal shape pile pipe；
Step 4), step 3) in complete the vibration of special-shaped pile pipe after, by steel reinforcement cage vertical lower to abnormal shape
In pile pipe, and the lower section of steel reinforcement cage is provided with the positioner corresponding with the localizer on pile top top, complete
Become laying between two parties of steel reinforcement cage, measure steel reinforcement cage perpendicularity, in the feelings guaranteeing that steel reinforcement cage vertical center is placed
Under condition, steel reinforcement cage fixed above one with steel reinforcement cage below the corresponding cross mark of positioner；
Step 5), concrete perfusion, by observation steel reinforcement cage above cross mark determine the placed in the middle of steel reinforcement cage
And perpendicularity, and control the slump of concrete；
Step 6), step 5) concrete perfusion time, the special-shaped pile pipe inner concrete height of monitoring；
Step 7), step 6) in concrete after special-shaped pile pipe maintains into type, abnormal shape pile pipe is extracted,
According to care environments, select corresponding maintenance method.
Preferably, in the construction method of described special-shaped in situ concrete pile, described special-shaped pile pipe is transversal
Face is gear type, selenodont, cross or other noncircular cross section.
Preferably, in the construction method of described special-shaped in situ concrete pile, described concrete pile tip is
Precast concrete, by filling concrete, the demoulding, maintenance prepares.
Preferably, in the construction method of described special-shaped in situ concrete pile, described vibration sinking tube, with
Penetration control embedded depth, within last two minutes, pile penetration is not more than 5 millimeters.
Preferably, in the construction method of described special-shaped in situ concrete pile, before the welding of described steel reinforcement cage,
First carry out bar straightening, reinforcing bar cutting, spiral bar makes and reinforcing bar is removed contamination process work, and checks solder joint
The defects such as place's fusing metal, the lap of splice, solder joint, solder skip, crackle, obvious burn.
Preferably, in the construction method of described special-shaped in situ concrete pile, described concrete is strictly pressed
According to concrete mix dispensing, mixing time is no less than 90 seconds.
Preferably, in the construction method of described special-shaped in situ concrete pile, described vibration pipe-drawing, first
Vibration 5-10s, then start tube drawing, answer and shake while pull out, often pull out 0.5-1.0 rice, stop pulling out the vibration 5-10 second,
The most repeatedly, until pile pipe is all extracted, to general soil layer, pipe-pulling speed controls as 1.2-1.5 m/min,
In soft layer, control pipe-pulling speed 0.6-0.8 m/min.
The present invention uses design have the pile pipe of profiled-cross-section, prepares concrete-pile by cast-in-place perfusion,
Decrease material usage, reduce production cost.Meanwhile, the present invention is by special-shaped in situ concrete pile
Cross section Design, improve concrete-pile intensity.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the construction method of special-shaped in situ concrete pile of the present invention；
Fig. 2 is the cross sectional representation of special-shaped in situ concrete pile of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art's reference
Description word can be implemented according to this.
As it is shown in figure 1, the present invention provides the construction method of a kind of special-shaped in situ concrete pile, the measuring of stake position
After completing, measurement hole depth, and again measure the position of concrete-pile to be irrigated, will choosing
Select the moon type or gear type pile pipe carry out location and installation, deviations be not more than regulation maximum deflection difference value；
Before carrying out pile pipe installation, using the slump is 90 filling concrete prefabricated component pile tops, supports after form removal
Protect, in case using；Stake machine in place after, again verification stake position, errorless after, pile pipe is inserted in pile top, and adjusts
Whole perpendicularity, then static pressure, immersed tube, during static pressure, immersed tube difficulty, tighten up wire rope pressurization immersed tube, and pile pipe enters
The soil degree of depth is based on penetration control, and it is auxiliary that designing pile length controls, and within last two minutes, pile penetration is 3cm.
About steel reinforcement cage making with lay, steel reinforcement cage welding before, first carry out bar straightening, reinforcing bar cutting,
Process work that spiral bar makes and reinforcing bar is removed contamination；Metal is melted uniform at solder joint；The lap of splice meets the requirements；
Solder joint without coming off, the defect such as solder skip, crackle, obvious burn；The main muscle of steel reinforcement cage uses flash butt welding, with
The main muscle joint quantity in one cross section must not exceed the 50% of main muscle sum, and adjacent two joint longitudinal pitches are not
Less than 540 millimeters, stirrup uses spot welding with main muscle, and each interface to weld, and prevents sealing-off, reinforcing bar
Cage lay vertical, placed in the middle, be firmly placed in pile pipe, location absolute altitude deviation be not more than 30 millimeters.
The concrete that perfusion is used, before ready-mixed concrete, first verification measurement instrument and the cooperation of regulation
Ratio, confirm errorless after can feeding, put in hopper successively by sand, cement, rubble, then send blender；
In strict accordance with concrete mix metering and loading materials；Mixing time should be no less than 90 seconds, it is ensured that stir；
Every machine-team at least leaves and takes one group of test block (150 × 150 × 150), and its indwelling and maintenance should comply with relevant regulations；
During concrete transportation, its homogeneity should be kept, accomplish not stratified, do not isolate, not spillage, no
Knot is hard；Scene wouldn't materials time, the concrete being stirred must not be discharged to stack pallet waiting；Because midway is stopped
When electricity maybe to rest more than one hour, mixing drum inner concrete all must be drawn out, and mixing drum is cleaned
Totally.
After filling concrete in pile pipe, first vibrate 5-10s, then start tube drawing, answer and shake while pull out, often
Pull out 0.5-1.0m, stop pulling out vibration 5-10s；The most repeatedly, extracting speed is 0.8 m/min, until pile pipe
All extract.
Finally, the concrete-pile cast is added wet curing, until maintenance completes.
In Fig. 2, two shapes are month type concrete-pile and the cross section of gear type concrete-pile respectively.
It is the pile pipe having special cross-section by the pile pipe of use, forms special-shaped concrete-pile, mixed in guarantee
In the case of the intensity of solidifying soil stake and safety in utilization, decrease materials'use amount, reduce production cost.
Can select to use the pile pipe of different cross section according to the different use environment of concrete-pile, reach to meet and make
With, reduce the purpose of materials'use amount.
The present invention uses design have the pile pipe of profiled-cross-section, prepares concrete-pile by cast-in-place perfusion,
Decrease material usage, reduce production cost.Meanwhile, the present invention is by special-shaped in situ concrete pile
Cross section Design, improve concrete-pile intensity.
Although embodiment of the present invention are disclosed as above, but it is not restricted to description and embodiment party
Listed utilization in formula, it can be applied to various applicable the field of the invention completely, for being familiar with ability
For the personnel in territory, be easily achieved other amendment, therefore without departing substantially from claim and etc. homotype
Enclosing under limited general concept, the present invention is not limited to specific details and shown here as the figure with description
Example.
Claims (5)
1. the construction method of a special-shaped in situ concrete pile, it is characterised in that comprise the following steps:
Step 1), measure the hole depth of stake holes, determine the riding position of special-shaped pile pipe, by the placement of abnormal shape pile pipe
In stake holes；
Step 2), step 1) in complete the installation of special-shaped pile pipe after, the position of the special-shaped pile pipe of verification, protect
The perpendicularity of the special-shaped pile pipe of card, the pile top that will lay is placed in special-shaped pile pipe, and ensures hanging down of pile top
Straight degree, the top of pile top is provided with localizer；
Step 3), step 2) in complete the laying of pile top after, the special-shaped pile pipe of vibration, control last two points
The pile penetration of clock abnormal shape pile pipe, wherein, the special-shaped pile pipe immersed tube of vibration, control pile penetration, last two minutes
Pile penetration is not more than 5 millimeters；
Step 4), step 3) in complete the vibration of special-shaped pile pipe after, steel reinforcement cage is vertically transferred to abnormal shape
In pile pipe, and the lower section of steel reinforcement cage is provided with the positioner corresponding with the localizer on pile top top, complete
Become laying between two parties of steel reinforcement cage, measure steel reinforcement cage perpendicularity, in the feelings guaranteeing that steel reinforcement cage vertical center is placed
Under condition, steel reinforcement cage fixed above one with steel reinforcement cage below the corresponding cross mark of positioner；
Step 5), concrete perfusion, by observation steel reinforcement cage above cross mark determine the placed in the middle of steel reinforcement cage
And perpendicularity, and control the slump of concrete；
Step 6), step 5) concrete perfusion time, the special-shaped pile pipe inner concrete height of monitoring；
Step 7), step 6) in concrete after special-shaped pile pipe maintains into type, abnormal shape pile pipe is extracted,
According to care environments, select corresponding maintenance method, wherein, abnormal shape pile pipe extracted employing vibration pipe-drawing,
First vibrate 5-10s, then start tube drawing, answer and shake while pull out, often pull out 0.5-1.0 rice, stop pulling out vibration 5-10
Second, the most repeatedly, until pile pipe is all extracted, to general soil layer, pipe-pulling speed control for 1.2-1.5 rice/
Point, in soft layer, control pipe-pulling speed 0.6-0.8 m/min.
2. the construction method of special-shaped in situ concrete pile as claimed in claim 1, it is characterised in that institute
Stating special-shaped pile pipe cross section is noncircular cross section.
3. the construction method of special-shaped in situ concrete pile as claimed in claim 1, it is characterised in that stake
Point is precast concrete, and by filling concrete, the demoulding, maintenance prepares.
4. the construction method of special-shaped in situ concrete pile as claimed in claim 1, it is characterised in that institute
Before stating steel reinforcement cage welding, first carry out bar straightening, reinforcing bar cutting, spiral bar makes and reinforcing bar is removed contamination process
Work, and check and melt metal, the lap of splice, solder joint, solder skip, crackle, substantially burn at solder joint
Defect.
5. the construction method of special-shaped in situ concrete pile as claimed in claim 1, it is characterised in that institute
State concrete to be no less than 90 seconds in strict accordance with concrete mix dispensing, mixing time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410586983.1A CN104314072B (en) | 2014-10-28 | 2014-10-28 | A kind of construction method of special-shaped in situ concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410586983.1A CN104314072B (en) | 2014-10-28 | 2014-10-28 | A kind of construction method of special-shaped in situ concrete pile |
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| Publication Number | Publication Date |
|---|---|
| CN104314072A CN104314072A (en) | 2015-01-28 |
| CN104314072B true CN104314072B (en) | 2016-08-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113490A (en) * | 2015-09-21 | 2015-12-02 | 陆见华 | Special-shaped mesopore water collecting pile and round hole mold adopted in same and construction process of special-shaped mesopore water collecting pile |
| CN106498938B (en) * | 2016-10-26 | 2019-05-21 | 重庆大学 | A kind of application method of cast-in-place concrete pile head shaping equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898849A (en) * | 1974-08-12 | 1975-08-12 | Dresser Ind | Method of packing heat pipes within a pipe pile involving the optimized frequency of vibration of the packing material |
| CN1103915A (en) * | 1993-07-29 | 1995-06-21 | 三台县地质勘探队 | Process and equipment for settling pipe and pouring concrete pile in situ |
| CN101864769A (en) * | 2010-07-02 | 2010-10-20 | 河海大学 | Cast-in-place X-shaped large-diameter hollow concrete pile and construction method thereof |
| CN103556629A (en) * | 2013-10-23 | 2014-02-05 | 叶长青 | Construction method of special-shaped pile |
-
2014
- 2014-10-28 CN CN201410586983.1A patent/CN104314072B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898849A (en) * | 1974-08-12 | 1975-08-12 | Dresser Ind | Method of packing heat pipes within a pipe pile involving the optimized frequency of vibration of the packing material |
| CN1103915A (en) * | 1993-07-29 | 1995-06-21 | 三台县地质勘探队 | Process and equipment for settling pipe and pouring concrete pile in situ |
| CN101864769A (en) * | 2010-07-02 | 2010-10-20 | 河海大学 | Cast-in-place X-shaped large-diameter hollow concrete pile and construction method thereof |
| CN103556629A (en) * | 2013-10-23 | 2014-02-05 | 叶长青 | Construction method of special-shaped pile |
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| CN104314072A (en) | 2015-01-28 |
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Effective date of registration: 20220112 Address after: 061001 No. 28, Yuhe Road, Yunhe District, Cangzhou City, Hebei Province Patentee after: Chemical industry first survey and Design Institute Co.,Ltd. Address before: 061001 No. 28, Yuhe Road, Yunhe District, Cangzhou City, Hebei Province Patentee before: CHINA CHEMICAL ENGINEERING FIRST GEOTECHNICAL ENGINEERING Corp.,Ltd. |