CN104314072A - Construction method of special-shaped cast-in-situ concrete pile - Google Patents
Construction method of special-shaped cast-in-situ concrete pile Download PDFInfo
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- CN104314072A CN104314072A CN201410586983.1A CN201410586983A CN104314072A CN 104314072 A CN104314072 A CN 104314072A CN 201410586983 A CN201410586983 A CN 201410586983A CN 104314072 A CN104314072 A CN 104314072A
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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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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction method of a special-shaped cast-in-situ concrete pile. The method includes: mounting a special-shaped pile pipe; mounting a pile tip, vibrating and sinking a pipe, and controlling penetrating depth of last two minutes; lowering a reinforcement cage, vertically mounting the reinforcement cage at the center, and controlling a positioning elevation difference; pouring concrete and controlling concrete slump; vibrating and drawing the pipe, to be specific, strictly controlling the drawing speed and the drawing height by the use of vibrating with drawing, and checking intra-pipe concrete height; maintaining a formed pile, to be specific, after the pile pipe is drawn out, according to a maintenance environment, selecting a corresponding maintenance manner. The special-shaped pile pipe is different from traditional cylindrical pipe pipes. The method has the advantages that the special-sectioned pile pipe is used, the concrete pipe is made by casting in situ, fewer materials are used, and production cost is lower; meanwhile, strength of the concrete pile is improved by designing the section of the special-shaped cast-in-situ concrete pile.
Description
Technical field
The present invention relates to a kind of construction method of special-shaped in situ concrete pile.
Background technology
In the future development of pile foundation, along with the carrying of high level, super high rise building and Large bridge foundation of main pylon etc. needs, stake footpath is increasing, and stake is long more and more longer; For pouring material, pile shaft material kind has ordinary concrete, Superfluid state concrete, non-fine concrete, fibrous concrete, self-leveling concrete and slightly expanded concrete etc.; In order to improve bearing capacity of single pile or Bearing Capacity Per Volume of Bored-cast develops shaped pile both at home and abroad in a large number; Improve bearing capacity and save the two principal themes that material is the development of current piling Technology, relate to the various fields of foundation industry.When guaranteeing workmanship and safety, saving material usage is the demand complying with society energy-conserving and environment-protective, and shaped pile can also improve bearing capacity while saving material usage, reach the social demand of energy efficiency, cast-in-place and prefabricated two large classes are divided into for cross section shaped pile, special-shaped precast pile limits its scope of application by factors such as mould, output, transport, lifting, arrangements of reinforcement, and cast-in-situ concrete shaped pile, by means of only the abnormal shape realizing stake of construction equipment, be easy to apply.
Summary of the invention
The present invention has designed and developed a kind of construction method of special-shaped in situ concrete pile.Use design to have the pile pipe of profiled-cross-section in the present invention, obtain concrete pile by cast-in-place perfusion, decrease material usage, reduce cost of production.Meanwhile, the present invention, by the Cross section Design to special-shaped in situ concrete pile, improves the intensity of concrete pile.
Technical scheme provided by the invention is:
A construction method for special-shaped in situ concrete pile, comprising:
Step 1), measure the hole depth of stake holes, determine the riding position of special-shaped pile pipe, special-shaped pile pipe be placed in stake holes;
Step 2), step 1) in complete the installation of special-shaped pile pipe after, check the position of special-shaped pile pipe, ensure the verticality of special-shaped pile pipe, the pile top that will lay is placed in special-shaped pile pipe, and ensures the verticality of pile top, and the top of pile top is provided with locator;
Step 3), step 2) in complete the laying of pile top after, vibrate special-shaped pile pipe, control the pile penetration of last two minutes special-shaped pile pipes;
Step 4), step 3) in complete the vibration of special-shaped pile pipe after, by reinforcing cage vertical lower in special-shaped pile pipe, and the below of reinforcing cage is provided with the positioner corresponding with the locator on pile top top, complete laying between two parties of reinforcing cage, measure reinforcing cage verticality, when guaranteeing that reinforcing cage vertical center is placed, above reinforcing cage, fix a cross mark corresponding with the positioner below reinforcing cage;
Step 5), concrete perfusion, by the placed in the middle and verticality of cross mark determination reinforcing cage above observation reinforcing cage, and control the concrete slump;
Step 6), step 5) concrete perfusion time, monitor special-shaped pile pipe inner concrete height;
Step 7), step 6) in concrete after special-shaped pile pipe maintenance is shaping, special-shaped pile pipe is extracted, according to care environments, selects corresponding maintenance method.
Preferably, in the construction method of described special-shaped in situ concrete pile, described special-shaped pile pipe cross section 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 concrete precast element, and by filling concrete, the demoulding, maintenance obtains.
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 described reinforcing cage welding, first carry out bar straightening, reinforcing bar cutting, spiral bar makes and reinforcing bar is removed contamination work for the treatment of, and check the defects such as deposite metal, solder joint place, lap length, solder joint, solder skip, crackle, obvious burn.
Preferably, in the construction method of described special-shaped in situ concrete pile, described concrete is prepared burden in strict accordance with concrete mix, and 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 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, so repeatedly, until pile pipe is all extracted, to general soil layer, pipe-pulling speed controls, for 1.2-1.5 m/min, in soft layer, to control pipe-pulling speed 0.6-0.8 m/min.
Use design to have the pile pipe of profiled-cross-section in the present invention, obtain concrete pile by cast-in-place perfusion, decrease material usage, reduce cost of production.Meanwhile, the present invention, by the Cross section Design to special-shaped in situ concrete pile, improves the intensity of concrete pile.
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
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to manual word to make those skilled in the art.
As shown in Figure 1, the invention provides a kind of construction method of special-shaped in situ concrete pile, after stake position measuring completes, measure hole depth, and again measure the position will carrying out the concrete pile poured into, by choose the moon type or gear type pile pipe position installation, deviations is not more than the maximum deflection difference value of regulation; Before carrying out pile pipe installation, use the slump to be 90 filling concrete prefabricated component pile tops, after form removal, carry out maintenance, in order to using; After pile-forming machine perching, again check stake position, after errorless, pile pipe is inserted in pile top, and adjusting verticality, then static pressure, immersed tube, static pressure, immersed tube at need, tightens up wire rope pressurization immersed tube, pile pipe embedded 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 reinforcing cage making with lay, before reinforcing cage welding, first carry out bar straightening, reinforcing bar cutting, spiral bar makes and reinforcing bar is removed contamination work for the treatment of; Deposite metal, solder joint place is even; Lap length meets the requirements; Solder joint without coming off, the defect such as solder skip, crackle, obviously burn; The main muscle of reinforcing cage adopts flash butt welding, the main muscle joint quantity in same cross section must not exceed 50% of main muscle sum, and adjacent two joint longitudinal pitches are not less than 540 millimeters, stirrup and main muscle adopt spot welding, each interface will weld, prevent sealing-off, reinforcing cage is laid vertically, between two parties, be firmly placed in pile pipe, location absolute altitude deviation is not more than 30 millimeters.
Pour into the concrete that uses, before ready-mixed concrete, first check the match ratio of measurement instrument and regulation, confirm errorless after can material loading, drop in hopper successively by sand, cement, rubble, then send mixer; In strict accordance with concrete mix metering and loading materials; Mixing time should be no less than 90 seconds, ensures to 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; In concrete transportation process, its homogenieity should be kept, accomplish not stratified, do not emanate, not spillage, do not tie hard; Scene wouldn't materials time, the concrete be stirred must not be discharged to stack pallet and wait; When maybe will resting more than one hour because having a power failure halfway, mixing drum inner concrete all must be drawn out, and mixing drum is cleaned up.
Fill concrete in pile pipe after, 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; So repeatedly, the speed of extracting is 0.8 m/min, until pile pipe is all extracted.
Finally, wet curing is added to cast concrete pile, until maintenance completes.
In Fig. 2, two shapes are the cross section of month type concrete pile and gear type concrete pile respectively.
Be the pile pipe having special cross-section by the pile pipe used, form special-shaped concrete pile, when ensureing intensity and the safety in utilization of concrete pile, decreasing materials'use amount, reducing cost of production.Environment for use that can be different according to concrete pile, the pile pipe of choice for use different cross section, reaches and meets use, reduces the object of materials'use amount.
Use design to have the pile pipe of profiled-cross-section in the present invention, obtain concrete pile by cast-in-place perfusion, decrease material usage, reduce cost of production.Meanwhile, the present invention, by the Cross section Design to special-shaped in situ concrete pile, improves the intensity of concrete pile.
Although embodiment of the present invention are open as above, but it is not restricted to listed in manual and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (7)
1. a construction method for special-shaped in situ concrete pile, is characterized in that, comprises the following steps:
Step 1), measure the hole depth of stake holes, determine the riding position of special-shaped pile pipe, special-shaped pile pipe be placed in stake holes;
Step 2), step 1) in complete the installation of special-shaped pile pipe after, check the position of special-shaped pile pipe, ensure the verticality of special-shaped pile pipe, the pile top that will lay is placed in special-shaped pile pipe, and ensures the verticality of pile top, and the top of pile top is provided with locator;
Step 3), step 2) in complete the laying of pile top after, vibrate special-shaped pile pipe, control the pile penetration of last two minutes special-shaped pile pipes;
Step 4), step 3) in complete the vibration of special-shaped pile pipe after, by reinforcing cage vertical lower in special-shaped pile pipe, and the below of reinforcing cage is provided with the positioner corresponding with the locator on pile top top, complete laying between two parties of reinforcing cage, measure reinforcing cage verticality, when guaranteeing that reinforcing cage vertical center is placed, above reinforcing cage, fix a cross mark corresponding with the positioner below reinforcing cage;
Step 5), concrete perfusion, by the placed in the middle and verticality of cross mark determination reinforcing cage above observation reinforcing cage, and control the concrete slump;
Step 6), step 5) concrete perfusion time, monitor special-shaped pile pipe inner concrete height;
Step 7), step 6) in concrete after special-shaped pile pipe maintenance is shaping, special-shaped pile pipe is extracted, according to care environments, selects corresponding maintenance method.
2. the construction method of special-shaped in situ concrete pile as claimed in claim 1, is characterized in that, described special-shaped pile pipe cross section is gear type, selenodont, cross or other noncircular cross section.
3. the construction method of special-shaped in situ concrete pile as claimed in claim 1, is characterized in that, described concrete pile tip is concrete precast element, and by filling concrete, the demoulding, maintenance obtains.
4. the construction method of special-shaped in situ concrete pile as claimed in claim 1, is characterized in that, described vibration sinking tube, and with penetration control embedded depth, within last two minutes, pile penetration is not more than 5 millimeters.
5. the construction method of special-shaped in situ concrete pile as claimed in claim 1, it is characterized in that, before described reinforcing cage welding, first carry out bar straightening, reinforcing bar cutting, spiral bar makes and reinforcing bar is removed contamination work for the treatment of, and check the defects such as deposite metal, solder joint place, lap length, solder joint, solder skip, crackle, obvious burn.
6. the construction method of special-shaped in situ concrete pile as claimed in claim 1, is characterized in that, described concrete is prepared burden in strict accordance with concrete mix, and mixing time is no less than 90 seconds.
7. the construction method of special-shaped in situ concrete pile as claimed in claim 1, is characterized in that, described 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, so repeatedly, until pile pipe is all extracted, to general soil layer, pipe-pulling speed controls, for 1.2-1.5 m/min, in soft layer, to control pipe-pulling speed 0.6-0.8 m/min.
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| 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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| 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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| CN104314072A true CN104314072A (en) | 2015-01-28 |
| CN104314072B CN104314072B (en) | 2016-08-24 |
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Cited By (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 |
| CN106498938A (en) * | 2016-10-26 | 2017-03-15 | 重庆大学 | A kind of cast-in-place concrete pile head shaping equipment and its using method |
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 |
Cited By (3)
| 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 |
| CN106498938A (en) * | 2016-10-26 | 2017-03-15 | 重庆大学 | A kind of cast-in-place concrete pile head shaping equipment and its using method |
| 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 |
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| CN104314072B (en) | 2016-08-24 |
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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. |