CN109183783A - It is a kind of to exempt from broken apart concrete filling pile head - Google Patents

It is a kind of to exempt from broken apart concrete filling pile head Download PDF

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Publication number
CN109183783A
CN109183783A CN201811240472.9A CN201811240472A CN109183783A CN 109183783 A CN109183783 A CN 109183783A CN 201811240472 A CN201811240472 A CN 201811240472A CN 109183783 A CN109183783 A CN 109183783A
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China
Prior art keywords
pile
casing
framework
steel reinforcement
exempt
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CN201811240472.9A
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CN109183783B (en
Inventor
朱正国
梁柱
高云河
吴代生
梁敏
蒲瑞新
黄雷云
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Nanning College for Vocational Technology
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Nanning College for Vocational Technology
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Priority to CN201811240472.9A priority Critical patent/CN109183783B/en
Publication of CN109183783A publication Critical patent/CN109183783A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/72Pile shoes

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

Exempt from broken apart concrete filling pile head, including bored concrete pile framework of steel reinforcement and concrete perfusion the invention discloses a kind of, there are longitudinal reinforcement and stirrup in the pile foundation portion of the bored concrete pile framework of steel reinforcement, and there is longitudinal reinforcement in the pile crown portion of the bored concrete pile framework of steel reinforcement;Suit is longitudinally separated casing on the longitudinal reinforcement in the pile crown portion of the bored concrete pile framework of steel reinforcement, the bottom in the pile crown portion of the bored concrete pile framework of steel reinforcement is provided with lateral separation casing, the lateral separation casing is arranged in " well " font, and center reserves the vacancy of decentralization tremie;And casing protection reinforcing bar is equipped in the lateral separation casing.Construction is simple of the present invention, low cost, the energy quick separating filling pile head by the way of overall separation, it is high-efficient, noiseless, free from dust, pile crown can realize recycled in its entirety, it can be used as the clump weight of later period dead load test on pile foundation, using being mechanically pulverized as the raw material of brickmaking after also can be recycled, market application prospect is extensive.

Description

It is a kind of to exempt from broken apart concrete filling pile head
Technical field
The present invention relates to cast-in-place concrete pile technical field more particularly to a kind of exempt from broken apart cast-in-place concrete pile stake Head.
Background technique
Van Gogh's layer and super high-rise building, all common basis of the cast-in-place concrete pile as building, the basis of bridge is more Add and can't do without pile foundation.As the bored concrete pile on solitary building basis, quantity lacks then up to a hundred, how then thousands of, substantial amounts.Reinforcing bar When Concrete Grouting Pale, specification regulation bored concrete pile top mark height should be higher than that design 0.5~1.0m of stake top absolute altitude, to guarantee pile crown The quality of concrete, main cause are that the concrete of pile crown part contains mud coating, and there are unavoidable on instillation process Mass defect, can only reject, cannot directly as stake top, but be higher than design of pile top absolute altitude pile crown part, to pile body coagulation After native intensity reaches the 80% of design strength, it could be cut when subsequent handling is constructed, cut the work of this part pile crown concrete Work is called " broken pile head ".The mode of live broken pile head is mainly divided artificial and mechanical.It is artificial mainly to be made by air compressor machine and air drill For crushing plant, pounded manually except pile crown concrete, the size of a general pile crown is in 1m3It is more than concrete, pound completely except and it is clear Reason needs 1 worker at least time half a day, inefficiency, and noise and dust seriously polluted, and working condition is poor, to worker The damage of both hands is very big.In addition damage can be directly contributed to the reserved steel bar of pile crown part, when the phenomenon that pounding disconnected reinforcing bar, Later period also needs reinforcement by connection to handle;Machinery is pounded except being to smash pile crown by hydraulic device, the purer artificial height of crushing efficiency, but also Need a large amount of hand fit that could complete, especially in the straightening of the smooth and reinforcing bar of later period pile crown, the relatively pure people of cost Work is higher.
For building trade, land resource is more and more rare, and skyscraper is rised sheer from level ground in succession.Pile foundation construction must can not It is few, at present in the building trade in Guangxi or even the whole nation, for except pile crown being constructed by the way of broken mostly, construct Low efficiency, at high cost, worker's operating condition is arduous, and the pile crown concrete fragment smashed has no recovery value.
Summary of the invention
Propose effect the purpose of the present invention is to provide a kind of saving of labor, energy conservation and environmental protection, can overall separation pile crown exempt from it is broken apart Concrete filling pile head.
To achieve the goals above, The technical solution adopted by the invention is as follows:
It is a kind of to exempt from broken apart concrete filling pile head, including bored concrete pile framework of steel reinforcement and concrete perfusion, it is described There are longitudinal reinforcement and stirrup in the pile foundation portion of bored concrete pile framework of steel reinforcement, and there is longitudinal reinforcement in the pile crown portion of the bored concrete pile framework of steel reinforcement; Suit is longitudinally separated casing, the stake of the bored concrete pile framework of steel reinforcement on the longitudinal reinforcement in the pile crown portion of the bored concrete pile framework of steel reinforcement The bottom on head is provided with lateral separation casing, and the lateral separation casing is arranged in " well " font, and center reserves decentralization coagulation The vacancy of native conduit;And casing protection reinforcing bar is equipped in the lateral separation casing, the later period extracts out as tensioned prestressing bar Perforation.
Preferably, the lateral separation casing includes the first lateral separation casing and the second lateral separation casing, described the One lateral separation casing and the second lateral separation casing are vertically installed in the bottom in the pile crown portion of bored concrete pile framework of steel reinforcement.
Preferably, the lateral separation casing length is greater than the stake diameter 10cm in the pile crown portion of bored concrete pile framework of steel reinforcement.
Preferably, the bottom in the pile crown portion of the bored concrete pile framework of steel reinforcement is also equipped with positioning ring, the positioning ring It is mounted on the outside of the framework of steel reinforcement in the pile crown portion of the bored concrete pile framework of steel reinforcement, the outer diameter of the positioning ring and the perfusion Pile head outer diameter is identical, and when disposing pile body steel reinforcement cage, the positioning ring is stake top elevation location.
Preferably, the lower end for being longitudinally separated casing and the lower end of positioning ring are in the same plane.
Preferably, the upper end for being longitudinally separated casing is flushed with the top of the longitudinal reinforcement in pile crown portion.
Preferably, the top adhesive tape sealing head for being longitudinally separated casing, adhesive tape packet header after longitudinal reinforcement is entangled in lower end, resistance Only when concreting cement slurry entrance.
Preferably, the diameter 16-20mm of the lateral separation casing, wall thickness 2mm;It is longitudinally separated casing diameter summary Greater than the diameter of the longitudinal reinforcement of pile crown steel essence cage, wall thickness is not less than 1mm.
Preferably, the casing and the material of lateral separation casing of being longitudinally separated is PVC plastic pipe.
The present invention is by adopting the above-described technical solution, have the advantages that
Of the invention exempts from broken apart concrete filling pile head construction is simple, low cost, using the side of overall separation Formula quick separating filling pile head, high-efficient, noiseless, free from dust, pile crown can realize recycled in its entirety, and it is quiet to can be used as later period pile foundation The clump weight of test is carried, using being mechanically pulverized as the raw material of brickmaking after also can be recycled, market application prospect is extensive.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pile crown framework of steel reinforcement of the invention;
Fig. 2 is the structural schematic diagram for exempting from broken apart concrete filling pile head after of the invention pour;
Fig. 3 is the solidifying native filling pile head separation process schematic diagram of the present invention;
Fig. 4 is overall separation schematic diagram after concrete filling pile head fracture of the present invention;
Fig. 5 is force analysis figure of the concrete filling pile head of the present invention under separation anchorage effect.
In attached drawing, 1- longitudinal reinforcement, 2- stirrup, 3- is longitudinally separated casing, 4- lateral separation casing, and 401- first is laterally point From casing, 402- the second lateral separation casing, 5- positioning ring, 6- lifting lug, 7- cone anchorage, it is very heavy that 8- holds hydraulic punching Top.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, referring to the drawings and preferred reality is enumerated Example is applied, the present invention is described in more detail.However, it is necessary to illustrate, many details listed in specification are only to be Reader is set to have a thorough explanation to one or more aspects of the present invention, it can also be with even without these specific details Realize the aspects of the invention.
Embodiment 1
It is according to the present invention a kind of to exempt from broken apart concrete filling pile head, including bored concrete pile as shown in Fig. 1 and 2 There are longitudinal reinforcement 1 and stirrup 2, the bored concrete pile in framework of steel reinforcement and concrete perfusion, the pile foundation portion of the bored concrete pile framework of steel reinforcement There is longitudinal reinforcement 1 in the pile crown portion of framework of steel reinforcement;Longitudinal point is set on the longitudinal reinforcement 1 in the pile crown portion of the bored concrete pile framework of steel reinforcement From casing 3, the bottom in the pile crown portion of the bored concrete pile framework of steel reinforcement is provided with lateral separation casing 4,4 pipe of lateral separation set It is arranged in " well " font, center reserves the vacancy of decentralization tremie;And casing protection is equipped in the lateral separation casing 4 Reinforcing bar prevents the extruding deviation of the concrete when pouring pile concrete, and the later period extracts the perforation as tensioned prestressing bar out; The lateral separation casing 4 includes the first lateral separation casing 401 and the second lateral separation casing 402, and described first laterally divides Bottom from the pile crown portion that casing 401 and the second lateral separation casing 402 are vertically installed in bored concrete pile framework of steel reinforcement;The transverse direction 4 length of separation sleeve pipe is greater than the stake diameter 10cm in the pile crown portion of bored concrete pile framework of steel reinforcement;The pile crown portion of the bored concrete pile framework of steel reinforcement Bottom be also equipped with positioning ring 5, the positioning ring 5 is mounted on the reinforcing bar in the pile crown portion of the bored concrete pile framework of steel reinforcement The outside of frame, the outer diameter of the positioning ring 5 is identical as the filling pile head outer diameter, described fixed when disposing pile body steel reinforcement cage Position lantern ring 5 is stake top elevation location.
Preferably, the lower end for being longitudinally separated casing 3 and the lower end of positioning ring 5 are in the same plane;The longitudinal direction The upper end of separation sleeve pipe 3 is flushed with the top of the longitudinal reinforcement 1 in pile crown portion;The top for being longitudinally separated casing 3 is sealed with adhesive tape Adhesive tape packet header after longitudinal reinforcement 1 is entangled in head, lower end, the entrance of cement slurry when preventing concreting;The lateral separation casing 4 Diameter 16-20mm, wall thickness 2mm;It is straight slightly larger than the longitudinal reinforcement of pile crown steel essence cage to be longitudinally separated 3 diameter of casing Diameter, wall thickness are not less than 1mm;The casing 3 and the material of lateral separation casing 4 of being longitudinally separated is common PVC plastic pipe.
As shown in Figs 1-4, the construction method for exempting from broken apart concrete filling pile head of the invention are as follows:
(1) the bored concrete pile framework of steel reinforcement according to measured priming concrete pile hole length and diameter processing, the bored concrete pile The pile foundation portion of framework of steel reinforcement includes longitudinal reinforcement 1 and stirrup 2, and the pile crown portion of the bored concrete pile framework of steel reinforcement includes longitudinal reinforcement 1;
(2) suit is longitudinally separated casing 3 on the longitudinal reinforcement 1 in the pile crown portion, is longitudinally separated the top glue of casing 3 Adhesive tape packet header after longitudinal reinforcement 1 is entangled in band end socket, lower end, the entrance of cement slurry, bored concrete pile reinforcing bar when preventing concreting Positioning ring 5 is installed in the bottom in the pile crown portion of frame, and positioning ring 5 is mounted on the reinforcing bar in the pile crown portion of the bored concrete pile framework of steel reinforcement The outside of skeleton, the outer diameter of the positioning ring 5 is identical as the filling pile head outer diameter, described when disposing pile body steel reinforcement cage Positioning ring 5 is stake top elevation location;
(3) lateral separation is set in the corresponding position of bottom positioning ring 5 in the pile crown portion of the bored concrete pile framework of steel reinforcement Casing 4,4 pipe of lateral separation set are arranged in " well " font, and center reserves the middle section that decentralization concreting conduit passes through, horizontal It is slightly larger than stake holes diameter to the length of separation sleeve pipe 4, then protects reinforcing bar toward the inside threading of lateral separation casing, and can Pre-buried lifting lug 6;
(4) the bored concrete pile framework of steel reinforcement is placed in the priming concrete pile hole, filling pile head template is set, to Concrete perfusion in priming concrete pile hole generates bored concrete pile, conserves process into bored concrete pile;
(5) conserve to after reaching design strength requirement that (generally concrete strength of pile reaches design after the bored concrete pile After the 80% of intensity), the soil around pile crown is opened in cleaning, exposes reserved lateral separation casing, is extracted out in lateral separation casing Casing protection reinforcing bar (later period is reusable), then penetrate prestressed reinforcement of tensioning (the every prestressing force of diameter 15.7mm Muscle can bear 30 tons or more of pulling force), cone anchorage 7 is installed at both ends, in conjunction with hand-held hydraulic feed-through jack 8, to pile crown point From the prestressing force that position applies lateral brisement, pile crown is pulled up, arrangement separation can be realized;Or often have in conjunction with building-site Lifting equipment, such as tower crane or digging machine, tensioning lock out operation can be realized in 1 operating personnel.
Separating feasibility theory analysis
Mechanical Calculation and Analysis is carried out so that 1m commonly uses stake diameter as an example:
As shown in figure 5, tension standard value is ftk=2.01MPa, because of pile crown position if concrete strength of pile is C30 Longitudinal reinforcement has casing protection, do not bond with concrete, then entire pile body breaks internal force are as follows: 1571KN converts into 157 Ton.Four groups to draw cone anchorage on, every vertical extruding internal force punished is about 20 tons at 8.And hydraulic punching is very heavy at this time The stretching force that top need to only provide 5.22 tons can meet, and hydraulic feed-through jack maximum is held on open market can generate 26 tons Pulling force.In addition, the concrete sheet after hardening, as fragile material, there is cracking in one section of part, entire cross section can be run through immediately, And then the effect of the overall separation of pile crown can be achieved completely.As seen from the above analysis, the pile crown concrete of 1m diameter is separated, There are also very big to have more than needed for mechanical property provided by equipment, that is to say, that the present invention can separate the pile crown of larger diameter, pass through It is arranged to the different quantity for drawing anchorage, fully meets the pile crown overall separation under the various operating conditions of diameter 0.8m to 2m.
The present invention implements only to need a small-sized hand-held centre-hole jack and some accessories that may be reused, such as Cone anchorage and the lifting equipment often having to drawing reinforcing bar, cooperation building-site, such as tower crane or digging machine, 1 operating personnel can be real Existing tensioning lock out operation, consumptive material are mainly reflected in plastic tube, and 20 meters of plastic tubes of each pile crown mean consumption calculate, Expenses Cost 30 Member, but overall efficacy is high, it is at low cost, there is biggish competition potential.With the current most common pure hand breaking stake of building trade Head is reference, and every cubic metre of pile head breaking needs artificial and machinery expenses at least at 200 yuan or more, and uses this item destination party If case is implemented, work efficiency can improve at least 10 times or more, and noiseless and dust pollution, the also recyclable benefit of the pile crown of rejecting With having high economic benefit and prospect.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (9)

1. a kind of exempt from broken apart concrete filling pile head, it is characterised in that: mixed including bored concrete pile framework of steel reinforcement and perfusion There are longitudinal reinforcement and stirrup in solidifying soil, the pile foundation portion of the bored concrete pile framework of steel reinforcement, and the pile crown portion of the bored concrete pile framework of steel reinforcement has Longitudinal reinforcement;Suit is longitudinally separated casing, the bored concrete pile steel on the longitudinal reinforcement in the pile crown portion of the bored concrete pile framework of steel reinforcement The bottom in the pile crown portion of tendons skeleton is provided with lateral separation casing, and the lateral separation casing is arranged in " well " font, and center is stayed The vacancy of tremie is transferred out;And casing protection reinforcing bar is equipped in the lateral separation casing.
A kind of exempt from broken apart concrete filling pile head 2. according to claim 1, it is characterised in that: the transverse direction Separation sleeve pipe includes the first lateral separation casing and the second lateral separation casing, and the first lateral separation casing and second is laterally Separation sleeve pipe is vertically installed in the bottom in the pile crown portion of bored concrete pile framework of steel reinforcement.
A kind of exempt from broken apart concrete filling pile head 3. according to claim 1 or 2, it is characterised in that: described Lateral separation casing length is greater than the stake diameter 10cm in the pile crown portion of bored concrete pile framework of steel reinforcement.
A kind of exempt from broken apart concrete filling pile head 4. according to claim 1, it is characterised in that: the perfusion The bottom in the pile crown portion of stake framework of steel reinforcement is also equipped with positioning ring, and the positioning ring is mounted on the bored concrete pile framework of steel reinforcement Pile crown portion framework of steel reinforcement outside, the outer diameter of the positioning ring is identical as the filling pile head outer diameter, dispose pile body When steel reinforcement cage, the positioning ring is stake top elevation location.
A kind of exempt from broken apart concrete filling pile head 5. according to claim 4, it is characterised in that: the longitudinal direction The lower end of separation sleeve pipe and the lower end of positioning ring are in the same plane.
A kind of exempt from broken apart concrete filling pile head 6. according to claim 1, it is characterised in that: the longitudinal direction The upper end of separation sleeve pipe is flushed with the top of the longitudinal reinforcement in pile crown portion.
A kind of exempt from broken apart concrete filling pile head 7. according to claim 1, it is characterised in that: the longitudinal direction Adhesive tape packet header after longitudinal reinforcement is entangled in the top adhesive tape sealing head of separation sleeve pipe, lower end, cement slurry when preventing concreting Into.
A kind of exempt from broken apart concrete filling pile head 8. according to claim 1 or 2, it is characterised in that: described The diameter 16-20mm of lateral separation casing, wall thickness 2mm;It is vertical slightly larger than pile crown steel essence cage to be longitudinally separated casing diameter To the diameter of reinforcing bar, wall thickness is not less than 1mm.
A kind of exempt from broken apart concrete filling pile head 9. according to claim 1, it is characterised in that: the longitudinal direction The material of separation sleeve pipe and lateral separation casing is PVC plastic pipe.
CN201811240472.9A 2018-10-24 2018-10-24 Breaking-free separated pile head of concrete filling pile Active CN109183783B (en)

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CN109989394A (en) * 2019-05-14 2019-07-09 贵州建工集团有限公司 A kind of cast-in-place concrete pile section stake partition and its construction method
CN110835911A (en) * 2019-11-22 2020-02-25 中冶(北京)交通科技发展有限公司 Quick-separating concrete pouring pile head
CN111395342A (en) * 2020-03-26 2020-07-10 中国一冶集团有限公司 Construction method for cast-in-place pile broken pile head, auxiliary isolation net and preparation method of auxiliary isolation net
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